DUPONT E I DE NEMOURS & CO
SC 13E4, 1999-07-12
PLASTIC MATERIAL, SYNTH RESIN/RUBBER, CELLULOS (NO GLASS)
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                ----------------

                                 SCHEDULE 13E-4
                                ----------------

                          ISSUER TENDER OFFER STATEMENT
                      (Pursuant to Section 13(e)(1) of the
                        Securities Exchange Act of 1934)
                             ----------------------

                      E. I. DU PONT DE NEMOURS AND COMPANY
                                (Name of Issuer)

                      E. I. DU PONT DE NEMOURS AND COMPANY
                      (Name of Person(s) Filing Statement)

                                  COMMON STOCK
                            PAR VALUE $.30 PER SHARE
                         (Title of Class of Securities)

                                   263534 10 9
                      (CUSIP Number of Class of Securities)

                              HOWARD R. RUDGE, ESQ.
                      E. I. DU PONT DE NEMOURS AND COMPANY
                               1007 MARKET STREET
                              WILMINGTON, DE 19898
                                 (302) 774-1000

                                    -Copy to-

                               LOU R. KLING, ESQ.
                             MATTHEW J. MALLOW, ESQ.
                            EILEEN NUGENT SIMON, ESQ.
                    SKADDEN, ARPS, SLATE, MEAGHER & FLOM LLP
                                919 THIRD AVENUE
                            NEW YORK, NEW YORK 10022
                                TEL: 212-735-3000
                                FAX: 212-735-2000

           (Name, Address and Telephone Number of Person Authorized to
                 Receive Notices and Communications on Behalf of
                           Person(s) Filing Statement)

                                  JULY 12, 1999
                    (Date Tender Offer First Published, Sent
                          or Given to Security Holders)
<PAGE>   2
                            Calculation of Filing Fee

Transaction Valuation(1)                                  Amount of Filing Fee
         $10,238,426,595                                        $2,047,686

[ X ]    Check box if any part of the fee is offset as provided by Rule 0-11(a)
         (2) and identify the filing with which the offsetting fee was
         previously paid. Identify the previous filing by registration statement
         number, or the Form or Schedule and the date of its filing.

Amount Previously Paid:             $2,047,686 (2)

Form or Registration No.:           Registration Statement on Form S-4
                                    (No. 333-74823)

Filing party:                       Conoco Inc.

Date Filed:                         March 22, 1999, as amended on May 19, 1999,
                                    June 16, 1999, July 2, 1999 and July 9,
                                    1999.


- ---------
(1)      Estimated solely for purposes of calculating the filing fee and
         computed pursuant to Rule 0-11(a)(4) of the Securities Exchange Act of
         1934, as amended (the "Exchange Act"). This amount assumes the
         acquisition by E. I. du Pont de Nemours and Company of shares of its
         common stock for $69.1875 per share, the average of the high and low
         sales prices of a share of such common stock as reported on the New
         York Stock Exchange Composite Tape on July 8, 1999.

(2)      A total of $2,846,282 was previously paid in connection with the
         Registration Statement on Form S-4 (No. 333-74823)

                                        2
<PAGE>   3
         This Schedule 13E-4 relates to an offer by E. I. du Pont de Nemours and
Company ("DuPont") to exchange up to 436,543,573 Shares of Class B common stock
of Conoco Inc., par value of $.01 per share (the "Conoco Class B Common Stock"),
which DuPont owns, for shares of DuPont common stock, par value $.30 per share
("DuPont Common Stock"), held by United States persons, upon terms and subject
to the conditions stated in the Offering Circular-Prospectus dated July 12,
1999 (the "Offering Circular-Prospectus") and the related Letter of Transmittal
(the "Letter of Transmittal" which, together with the Offering
Circular-Prospectus, constitute the "Exchange Offer").

         The Offering Circular-Prospectus and the Letter of Transmittal, copies
of which are attached hereto as Exhibits (a)(2) and (a)(4), are incorporated in
this document by reference.

ITEM 1.  SECURITY AND ISSUER.

         (a) The name of the issuer is E. I. du Pont de Nemours and Company, a
Delaware corporation, which has its principal executive offices at 1007 Market
Street, Wilmington, Delaware 19898.

         (b) Information regarding the exact title and the amount of DuPont
Common Stock outstanding is set forth on the front cover page of the Offering
Circular- Prospectus and in the section entitled "The Exchange Offer-Terms of
the Exchange Offer" and is incorporated in this document by reference. With
respect to the exact amount of DuPont Common Stock being sought and the
consideration being offered for the shares of DuPont Common Stock, the
information is set forth in the cover page of the Offering Circular - Prospectus
and the sections of the Offering Circular-Prospectus entitled "Summary," "The
Exchange Offer" and "Price Range of Conoco Class A Common Stock and Dividends,"
which are incorporated in this document by reference. With respect to whether
any shares of DuPont Common Stock will be purchased from any officer, director
or affiliate of DuPont, "Schedule A - Transactions Concerning Common Stock of
DuPont" ("Schedule A") of the Offering Circular-Prospectus is incorporated in
this document by reference.

         (c) Information with respect to principal market and pricing
information is set forth in the section of the Offering Circular - Prospectus
entitled "Price Range of DuPont Common Stock and Dividends" and is incorporated
in this document by reference.

         (d) Not applicable.

ITEM 2.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         (a) The consideration being offered by DuPont in exchange for the
shares of DuPont Common Stock is up to 436,543,573 shares of Conoco Class B
Common Stock owned by DuPont. The information set forth in the sections of the
Offering Circular - Prospectus entitled

                                        3
<PAGE>   4
"The Exchange Offer - Terms of The Exchange Offer" is incorporated in this
document by reference.

         (b)      Not applicable.

ITEM 3. PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE ISSUER OR
AFFILIATE.

         (a)      The information set forth on the front cover page of the
                  Offering Circular Prospectus and the sections entitled "The
                  Transaction-Background and Purpose," "The Transaction-
                  Effects" and "The Exchange Offer-Terms of the Exchange Offer"
                  are incorporated in this document by reference.

         (b)      The information set forth on the front cover page of the
                  Offering Circular-Prospectus and the sections entitled "The
                  Transaction-Background and Purpose" and "The Transaction-
                  Effects" are incorporated in this document by reference.

         (c)      The information set forth on the front cover page of the
                  Offering Circular-Prospectus and the sections entitled "The
                  Transaction-Background and Purpose" and "The Transaction-
                  Effects" are incorporated in this document by reference.

         (d)      The information set forth in the section of the Offering
                  Circular-Prospectus entitled "Management" is incorporated in
                  this document by reference.

         (e)      The information set forth in the sections of the Offering
                  Circular-Prospectus entitled "The Transaction-Effects" and
                  "Unaudited Pro Forma Consolidated Financial Statements of
                  DuPont" are incorporated in this document by reference.

         (f)      The information set forth in the sections of the Offering
                  Circular-Prospectus entitled "The Transaction-Effects,"
                  "Unaudited Pro Forma Consolidated Financial Statements of
                  DuPont" and "Arrangements Between Conoco and DuPont" are
                  incorporated in this document by reference.

         (g)      Not applicable.

         (h)      Not applicable.

         (i)      Not applicable.

         (j)      Not applicable.

ITEM 4.  INTEREST IN SECURITIES OF THE ISSUER.

                                        4
<PAGE>   5
         Except as set forth in Schedule A to the Offering Circular-Prospectus
which is incorporated in this document by reference, no transaction with respect
to the shares of DuPont Common Stock was effected during the period of 40
business days prior to the date hereof by DuPont, or to DuPont's knowledge, its
directors or executive officers, or any of the directors or executive officers
of any of its subsidiaries, or any associate or subsidiary of any such person
(including any director or executive officer of any such subsidiary).

ITEM 5.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
         TO THE ISSUER'S SECURITIES.

         Neither DuPont nor, to the best of DuPont's knowledge, any of its
directors or executive officers, or any of the directors or executive officers
of any of its subsidiaries, is party to any contract, arrangement, understanding
or relationship relating, directly or indirectly, to the Exchange Offer with
respect to any securities of DuPont required to be disclosed in this document.

ITEM 6.  PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED.

         Neither DuPont nor any person on behalf of DuPont will pay any
commission or other remuneration to any broker, dealer, salesman or other person
for soliciting exchanges of the shares of DuPont Common Stock except as set
forth in the section of the Offering Circular-Prospectus entitled "The Exchange
Offer-Fees and Expenses" which is incorporated in this document by reference.
Regular employees of DuPont may solicit exchanges from holders of the shares of
DuPont Common Stock but they will not receive additional compensation for doing
so.

ITEM 7.  FINANCIAL INFORMATION.

         (a) The financial information set forth in the sections of the Offering
Circular-Prospectus entitled "Summary-Summary Historical and Pro Forma
Financial Data of DuPont," "Selected Historical and Pro Forma Financial Data of
DuPont" and DuPont's 1998 Annual Report to Shareholders for the fiscal year
ended December 31, 1998 and the financial statements included therein, which we
have incorporated by reference in the Offering Circular-Prospectus, are also
incorporated in this document by reference.

         (b) The pro forma information set forth in the sections of the Offering
Circular-Prospectus entitled "Summary-Summary Historical and Pro Forma
Financial Data of DuPont", "Selected Historical and Pro Forma Financial Data of
DuPont," and "Unaudited Pro Forma Consolidated Financial Statements of DuPont"
are incorporated in this document by reference.

ITEM 8.  ADDITIONAL INFORMATION.

         (a) None.

                                        5
<PAGE>   6
         (b) The information set forth in the section of the Offering Circular -
Prospectus entitled "The Transaction - Regulatory Approvals" is incorporated in
this document by reference.

         (c) Not applicable.

         (d) None.

         (e) Additional information with respect to the Exchange Offer and
related matters is included throughout the Offering Circular-Prospectus and
the Letter of Transmittal, which are enclosed with this document as Exhibits
(a)(2) and (a)(4), respectively, and which are incorporated in this document by
reference in their entirety. DuPont reserves the right to exclude holders in any
jurisdiction in which it is asserted that the Exchange Offer cannot lawfully be
made. So long as DuPont makes a good faith effort to comply with any state law
deemed applicable to the Exchange Offer, if it cannot do so, DuPont believes
that the exclusion of holders residing in such state(s) is permitted under Rule
13e-4(f)(9) promulgated under the Exchange Act. DuPont is not aware of any
jurisdiction in the United States in which the making of the Exchange Offer or
the tender of the shares of DuPont Common Stock would not be in compliance with
the laws of such jurisdiction.

ITEM 9.  MATERIAL TO BE FILED AS EXHIBITS.

         <TABLE>
<CAPTION>
<S>                 <C>
         (a)(1)     Press Releases dated July 9, 1999, July 9, 1999, and July
                    12, 1999.

         (a)(2)     Offering Circular - Prospectus dated July 12, 1999.

         (a)(3)     Letter from DuPont to stockholders.

         (a)(4)     Letter of transmittal.

         (a)(5)     Notice of guaranteed delivery.

         (a)(6)     Letter from DuPont to Brokers, Dealers, Commercial Banks,
                    Trust Companies and other Nominees.

         (a)(7)     Letter to Clients for use by Brokers, Dealers, Commercial
                    Banks, Trust Companies and other Nominees.

         (a)(8)     Guidelines for Certification of Taxpayer Identification
                    Number on Substitute Form W-9.

         (a)(9)     Letters from Trustees or Administrators of DuPont or DuPont
                    affiliated company savings plans.
</TABLE>

                                        6
<PAGE>   7
         <TABLE>
<CAPTION>
<S>                 <C>
         (a)(10)    Notice to Participants in a Blueprint brokerage account at
                    Merrill Lynch of DuPont.

         (a)(11)    Summary advertisement to be printed in the press on July 12, 1999.

         (a)(12)    Correspondence to employees of DuPont.

         (a)(13)    Correspondence to employees of Conoco.

         (b)        Not applicable.

         (c)        Not applicable.

         (d)        Opinion of Skadden, Arps, Slate, Meagher & Flom LLP
                    regarding tax matters.

         (e)        See Exhibit (a)(2) above.

         (f)        Not applicable.

         (g)(1)     Consolidated Financial Statements as of and for the Year
                    Ended December 31, 1998 (audited, except for Quarterly
                    Financial Data and Five-Year Financial Review).

         (g)(2)     Consolidated Financial Statements as of and for the Three
                    Months Ended March 31, 1999 (unaudited).

</TABLE>

                                        7
<PAGE>   8
                                    SIGNATURE

         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated:  July 12, 1999                    E. I. du Pont de Nemours and Company


                                         By /s/ Gary M. Pfeiffer
                                           ------------------------------------
                                         Name:  Gary M. Pfeiffer
                                         Title: Senior Vice President and
                                                Chief Financial Officer

                                        8
<PAGE>   9
                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
<S>                 <C>
         (a)(1)     Press Releases dated July 9, 1999, July 9, 1999, and July
                    12, 1999.

         (a)(2)     Offering Circular - Prospectus dated July 12, 1999.

         (a)(3)     Letter from DuPont to stockholders.

         (a)(4)     Letter of transmittal.

         (a)(5)     Notice of guaranteed delivery.

         (a)(6)     Letter from DuPont to Brokers, Dealers, Commercial Banks,
                    Trust Companies and other Nominees.

         (a)(7)     Letter to Clients for use by Brokers, Dealers, Commercial
                    Banks, Trust Companies and other Nominees.

         (a)(8)     Guidelines for Certification of Taxpayer Identification
                    Number on Substitute Form W-9.

         (a)(9)     Letters from Trustees or Administrators of DuPont or DuPont
                    affiliated company savings plans.

         (a)(10)    Notice to Participants in a Blueprint brokerage account at
                    Merrill Lynch of DuPont.

         (a)(11)    Summary advertisement to be printed in the press on July 12, 1999.

         (a)(12)    Correspondence to employees of DuPont.

         (a)(13)    Correspondence to employees of Conoco.

         (b)        Not applicable.

         (c)        Not applicable.

         (d)        Opinion of Skadden, Arps, Slate, Meagher & Flom LLP
                    regarding tax matters.

         (e)        See Exhibit (a)(2) above.

         (f)        Not applicable.

         (g)(1)     Consolidated Financial Statements as of and for the Year
                    Ended December 31, 1998 (audited, except for Quarterly
                    Financial Data and Five-Year Financial Review).

         (g)(2)     Consolidated Financial Statements as of and for the Three
                    Months Ended March 31, 1999 (unaudited).

</TABLE>


<PAGE>   1
                                                                  Exhibit (a)(1)

[DU PONT(R) LOGO]                                                 CORPORATE NEWS



                                                          Contact: Susan Gaffney
                                                                    302-774-2698

    DUPONT SETS RATIO FOR EXCHANGE OFFER FOR CONOCO INC. CLASS B COMMON STOCK

                  WILMINGTON, Del., July 9 - DuPont (NYSE:DD) today set the
exchange ratio for the offer to its shareholders to exchange one share of DuPont
common stock for 2.95 shares of the Conoco (NYSE: COC) Class B common stock
currently held by DuPont up to a maximum of 148 million shares of DuPont common
stock. The exchange ratio represents a premium of 18 percent based on the NYSE
closing prices on July 8 of $68-5/8 per share for DuPont and $27-3/8 per share
for Conoco.
                  DuPont expects the registration statement filed with the
Securities and Exchange Commission (SEC) under which the exchange offer will be
made to become effective later today. It is expected that the exchange offer
will commence on July 12 subject to the effectiveness of the registration
statement.

<PAGE>   2
2

                  The exchange offer is to be available only to DuPont
shareholders who are United States persons as defined in the Offering
Circular-Prospectus. If the exchange offer, which will be made by means of an
Offering Circular-Prospectus, commences on July 12, it will expire at 12:00
midnight, New York City time, on August 6, 1999, unless extended.

                  DuPont has retained the services of D.F. King & Co., Inc., as
Information Agent to assist shareholders with the exchange offer. Questions
regarding the terms and conditions of the exchange offer or information on
tendering shares should be directed to D.F. King at 800-755-3105 (toll free) in
the U.S. or 212-269-5550 (collect) outside the U.S.

                  Morgan Stanley Dean Witter will act as dealer-manager.

                  Conoco is a major, integrated energy company based in Houston
and active in 40 countries.

                  DuPont is a science company, delivering science-based
solutions that make a difference in people's lives in food and nutrition; health
care; apparel; home and construction; electronics; and transportation. Founded
in 1802, the company operates in 65 countries and has 92,000 employees.

                  A registration statement relating to these securities has been
filed with the Securities and Exchange Commission but has not yet become
effective. These securities may not be sold nor may offers to buy be accepted
prior to the time the registration statement becomes effective. This
communication shall not constitute an offer to sell or the solicitation of an
offer to buy nor shall there be any sale of these securities in any state in
which such offer, solicitation or sale would be unlawful prior to registration
or qualification under the securities laws of any such state.

                                      # # #

7/9/99

E.I. du Pont de Nemours and Company
<PAGE>   3
[DU PONT(R) LOGO]


                                                                  CORPORATE NEWS


                                                          Contact: Susan Gaffney
                                                                  (302) 774-2698

        SEC DECLARES REGISTRATION STATEMENT FOR EXCHANGE OFFER EFFECTIVE

         WILMINGTON, Del., July 9 - The Securities and Exchange Commission (SEC)
has declared effective the registration statement under which DuPont will
commence the exchange offer described in DuPont's news release issued earlier
today. It is expected that the offer will commence July 12.

                                      # # #
7/9/99

E. I. du Pont de Nemours and Company
<PAGE>   4
[DUPONT(R) LOGO]

                                                                  CORPORATE NEWS

                                        Contact:     Susan Gaffney
                                                     302-774-2698

      DUPONT COMMENCES EXCHANGE OFFER FOR CONOCO INC. CLASS B COMMON STOCK

                  WILMINGTON, Del., July 12 - DuPont today commenced the
exchange offer to its shareholders described in the DuPont news release issued
July 9.

                                      # # #

7/12/99




E. I. du Pont de Nemours and Company

<PAGE>   1
                                                                  Exhibit (a)(2)

                      E. I. du Pont de Nemours and Company

                               Offer to Exchange
                      2.95 Shares of Class B Common Stock
                                       of

                                  Conoco Inc.
                               for each share of

                                  Common Stock
                                       of

                      E. I. du Pont de Nemours and Company
THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON AUGUST
6, 1999, UNLESS THE OFFER IS EXTENDED.

DuPont stockholders who elect to participate will receive from DuPont 2.95
shares of Conoco Class B common stock for each DuPont share tendered. DuPont
will accept up to an aggregate of 147,980,872 DuPont shares under the exchange
offer.

The exchange offer is available only to DuPont stockholders who are United
States persons, as explained on page 25. DuPont stockholders who are not United
States persons are ineligible to participate in the exchange offer. Instead, we
will be extending a substantially concurrent cash offer to purchase DuPont
shares from stockholders who are not United States persons. If you are not a
United States person, you should contact D.F. King & Co., Inc. at the telephone
number shown below or your broker for more information regarding the cash offer.
United States persons are not eligible to participate in the cash offer.
                            ------------------------

The terms and conditions of the exchange offer are described in this document,
which you should read carefully. Neither DuPont, Conoco nor any of their
officers or directors makes any recommendation as to whether or not you should
tender your shares. You must make your own decision after reading this document
and consulting with your advisors based on your own financial position and
requirements.
                            ------------------------

This is the initial public offering of Conoco Class B common stock, and no
public market currently exists for the Class B shares. The Conoco Class B common
stock has been approved for listing on the New York Stock Exchange under the
symbol "COC.B."
                            ------------------------

Investing in the Conoco Class B common stock involves risks. See "Risk Factors"
beginning on page 18.
                            ------------------------

The Securities and Exchange Commission and any state securities regulators have
not approved or disapproved of these securities or determined if this document
is truthful or complete. Any representation to the contrary is a criminal
offense.

DuPont has retained the services of D.F. King as information agent to assist you
in connection with the exchange offer. You may call D.F. King at (800) 755-3105
(toll free) in the United States to request additional documents and to ask any
questions or at (212) 269-5550 (collect) elsewhere.
                            ------------------------

                 The Dealer Manager for the Exchange Offer is:
                           MORGAN STANLEY DEAN WITTER

July 12, 1999
<PAGE>   2

                               TABLE OF CONTENTS

<TABLE>
<S>                                          <C>
Questions and Answers About the
  Exchange Offer...........................    4
Summary....................................    7
  E. I. du Pont de Nemours and Company.....    7
  Conoco Inc. .............................    8
  Terms of the Exchange Offer..............    9
  Summary Historical and Pro Forma
    Financial Data of DuPont...............   12
  Summary Historical and Pro Forma
    Financial Data of Conoco...............   14
Risk Factors...............................   18
  Tendering and nontendering stockholders
    are affected differently by the
    exchange offer.........................   18
  The IRS may treat the transaction as
    taxable to DuPont and its stockholders
    if representations made to the IRS were
    inaccurate or if undertakings made to
    the IRS are not complied with..........   18
  Tendering stockholders may not receive
    any premium............................   18
  Market prices for Conoco Class B common
    stock may vary from market prices for
    Conoco Class A common stock............   18
  The split-off will cause DuPont's assets
    and total capitalization to decrease...   19
  Low oil and gas prices have negatively
    affected Conoco's financial results and
    may continue to do so in the future....   19
  Global political and economic
    developments may hurt Conoco's
    operations.............................   19
  Conoco and DuPont may have conflicts of
    interest...............................   20
  The oil and gas reserves data in this
    document are only estimates, and may
    prove to be inaccurate.................   20
  Conoco's growth depends on finding new
    reserves...............................   20
  Risk of future acquisitions and other
    transactions by DuPont and Conoco......   21
  Conoco may incur material costs to comply
    with environmental regulations.........   21
  Changes in government regulations may
    impose price controls and limitations
    on production of oil and gas...........   21
  Potential year 2000 problems may
    adversely affect Conoco's business.....   21
  Provisions in Conoco's by-laws,
    certificate of incorporation, and
    Delaware law could deter takeover
    attempts...............................   22
  There is no public market for Conoco
    Class B common stock and an active
    trading market may not develop.........   22
  Conoco may not pay dividends on its
    common stock...........................   22
The Transaction............................   23
  Background and Purpose...................   23
  Effects..................................   23
  No Appraisal Rights......................   23
  Regulatory Approvals.....................   24
  Accounting Treatment.....................   24
The Exchange Offer.........................   25
  Terms of the Exchange Offer..............   25
  Proration; Tenders for Exchange by
    Holders of Fewer Than 100 Shares of
    DuPont Common Stock....................   26
  Fractional Shares........................   26
  Exchange of Shares of DuPont Common
    Stock..................................   26
  Procedures for Tendering DuPont Shares...   27
  DuPont's Interpretations are Binding.....   29
  Lost or Destroyed Certificates...........   29
  Guaranteed Delivery Procedure............   29
  Withdrawal Rights........................   30
  Book-Entry Accounts......................   30
  Extension of Tender Period; Termination;
    Amendment..............................   31
  Conditions for Completion of the Exchange
    Offer..................................   31
  Fees and Expenses........................   33
  Legal Limitation.........................   34
Price Range of DuPont Common Stock and
  Dividends................................   35
Price Range of Conoco Class A Common Stock
  and Dividends............................   36
Special Note on Forward-Looking
  Information..............................   37
Selected Historical and Pro Forma Financial
  Data of DuPont...........................   38
Selected Historical and Pro Forma Financial
  Data of Conoco...........................   40
Unaudited Pro Forma Consolidated Financial
  Statements of DuPont.....................   43
Unaudited Pro Forma Financial Statements of
  Conoco...................................   52
Management's Discussion and Analysis of
  Financial Condition and Results of
  Operations of Conoco.....................   61
  Liquidity and Capital Resources..........   62
  Investment Activities....................   62
  Financing Activities.....................   66
  Results of Operations....................   68
  Upstream Segment Results.................   73
  Downstream Segment Results...............   75
  Corporate and Other Segment Results......   76
  Environmental Expenditures...............   77
  Tax Matters..............................   78
  Year 2000................................   79
  European Monetary Union..................   80
  Restructuring............................   81
  New Accounting Standards.................   81
  Market Risks.............................   82
Business of DuPont.........................   86
  General..................................   86
  Reportable Segments......................   86
  Recent Developments......................   88
</TABLE>

                                        2
<PAGE>   3
<TABLE>
<S>                                          <C>
Business of Conoco.........................   89
  General..................................   89
  Business Strategy........................   89
  Conoco History...........................   90
  Financial Information -- Operating
    Segment and Geographic Information.....   90
  Upstream.................................   90
  Downstream...............................  104
  Power....................................  114
  Core Values..............................  115
  Environmental Regulation.................  116
  Sources of Supply........................  118
  Research and Development.................  119
  Patents and Trademarks...................  119
  Operating Hazards and Insurance..........  119
  Properties...............................  119
  Employees................................  119
  Legal Proceedings........................  120
Management.................................  121
  Directors and Executive Officers.........  121
  Election and Compensation of Directors...  124
  Committees of the Board of Directors.....  125
  Stock Ownership of Directors and
    Executive Officers.....................  126
  Compensation of Executive Officers.......  127
  Retirement Benefits......................  129
  Severance Arrangements...................  130
Principal Stockholders of Conoco Common
  Stock....................................  131
Principal Stockholders of DuPont Common
  Stock....................................  132
Shares Eligible for Future Sale............  132
Description of Conoco Capital Stock........  133
  General..................................  133
  Common Stock.............................  133
  Preferred Stock..........................  134
  Anti-Takeover Effects of Certificate and
    By-Law Provisions......................  135
  Contractual Relations among Conoco,
    DuPont and Related Entities............  139
  Delaware Business Combination Statute....  140
  Limitations on Directors' Liability......  140
  Listing..................................  141
  Transfer Agent and Registrar.............  141
Comparison of Rights of Holders of DuPont
  Common Stock and Conoco Common Stock.....  142
  Authorized Capital Structure and
    Liquidation Rights.....................  142
  Dividend Policy..........................  142
  Voting Rights............................  142
  Anti-Takeover Provisions.................  143
  Listing..................................  145
Arrangements Between Conoco and DuPont.....  146
  Restructuring, Transfer and Separation
    Agreement..............................  146
  Intercompany Notes.......................  148
  Tax Sharing Agreement....................  148
  Employee Matters Agreement...............  149
  Transitional Services Agreements.........  150
  Information Systems and Telecommunication
    Carrier Transitional Services
    Agreements and Facilities Lease
    Agreements.............................  150
  Natural Gas Supply Agreement.............  150
  Feedstock for DuPont's Sabine River Works
    Plant..................................  150
  Motor Carrier Agreement..................  150
  Registration Rights Agreement............  151
United States Federal Income Tax
  Consequences.............................  152
Legal Matters..............................  153
Experts....................................  153
Where You Can Find More Information........  154
Conoco Inc. Index to Consolidated Financial
  Statements...............................  F-1
Schedule A -- Transactions Concerning
  Common Stock of DuPont...................  A-1
</TABLE>

                                        3
<PAGE>   4

                             QUESTIONS AND ANSWERS
                            ABOUT THE EXCHANGE OFFER

     Q1.  WHY HAS DUPONT DECIDED TO SEPARATE CONOCO FROM THE REST OF DUPONT?

     A1.  As part of our increased focus on our materials and life sciences
businesses, in September 1998 our board of directors approved a plan to separate
our oil and gas business, operated through Conoco, from our other businesses.

     We believe that separating Conoco from DuPont will:

     - allow each company to independently access the capital markets;

     - permit DuPont to expand its life sciences business, while at the same
       time allowing Conoco to pursue its investment program in new and
       capital-intensive oil and gas projects;

     - facilitate future partnerships, combinations and other arrangements
       between Conoco and other entities in the oil and gas business;

     - allow each company to offer incentives to its employees that are more
       closely linked to its performance;

     - permit each company to focus its managerial and financial resources on
       the growth of its business; and

     - enhance both DuPont's and Conoco's abilities to engage in future
       acquisitions in which their own stock is issued as consideration.

     Q2.  WHY DID DUPONT CHOOSE THE EXCHANGE OFFER AS THE WAY TO SEPARATE
CONOCO?

     A2.  DuPont believes the exchange offer is a tax efficient way to achieve
the goals outlined above. It allows you to adjust your investment between DuPont
and Conoco on a tax-free basis and provides you with the opportunity to receive
the anticipated premium referred to in question 11.

     Q3.  MAY I PARTICIPATE IN THE EXCHANGE OFFER?

     A3.  You may participate in the exchange offer only if you are a United
States person that holds DuPont shares. You are a United States person if you
are:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any state within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

You are urged to consult your tax advisor regarding your status as a United
States person to determine your eligibility to participate in the exchange
offer.

     Q4.  IF I AM NOT A UNITED STATES PERSON, MAY I STILL EXCHANGE MY DUPONT
SHARES?

     A4.  No. If you are not a United States person, you may not exchange your
DuPont shares for Conoco shares in the exchange offer. You may, however, sell
your DuPont shares in a substantially concurrent cash offer in which we are
offering to purchase for cash DuPont shares held by non-United States persons.
If you are not a United States person, you should contact D.F. King or your
broker for more information regarding the cash offer. United States persons are
not eligible to participate in the cash offer.

                                        4
<PAGE>   5

     Q5.  HOW MANY SHARES OF CONOCO CLASS B COMMON STOCK WILL I RECEIVE FOR EACH
SHARE OF DUPONT COMMON STOCK THAT I TENDER?

     A5.  You will receive 2.95 shares of Conoco Class B common stock for each
share of DuPont common stock that you validly tender in the exchange offer. This
is sometimes referred to in this document as the exchange ratio.

     Q6.  WHEN DOES THE EXCHANGE OFFER EXPIRE?

     A6.  The exchange offer period and withdrawal rights will expire at 12:00
midnight, New York City time, on August 6, 1999, unless extended by DuPont. You
must tender your DuPont shares prior to this date if you wish to participate.

     Q7.  HOW DO I PARTICIPATE IN THE EXCHANGE OFFER?

     A7.  The procedures you must follow to participate in the exchange offer
will depend on whether you hold your DuPont shares in certificated form, through
a bank or broker, through an employee benefit plan or through a Blueprint
brokerage account held at Merrill Lynch. For specific instructions about how to
participate, see "Summary -- Terms of the Exchange Offer -- Procedures for
tendering" on page 10, and "The Exchange Offer -- Procedures for Tendering
DuPont Shares" on page 27.

     Q8.  CAN I TENDER ONLY A PORTION OF MY DUPONT SHARES IN THE EXCHANGE OFFER?

     A8.  Yes. You may tender some or all of your DuPont shares.

     Q9.  WHAT DO I DO IF I WANT TO RETAIN MY DUPONT SHARES?

     A9.  If you want to retain your DuPont shares, you do not need to take any
action.

     Q10.  CAN I CHANGE MY MIND AFTER I TENDER MY DUPONT SHARES?

     A10.  Yes. You may withdraw tenders of your shares any time before the
exchange offer expires. If you change your mind again, you can retender your
DuPont shares by following the tender procedures again prior to the expiration
of the exchange offer.

     Q11.  WHAT IS THE ANTICIPATED PREMIUM?

     A11.  Based on the closing trading prices for shares of DuPont common stock
(NYSE: DD) and Conoco Class A common stock (NYSE: COC) on July 8, 1999, and
assuming that Conoco Class B common stock trades at the same or a greater price
as Conoco Class A common stock, the exchange ratio would result in a DuPont
stockholder receiving Conoco shares with a market value greater than the market
value of the DuPont shares tendered. The Conoco Class B common stock may,
however, trade at a different price than the Conoco Class A common stock.
Because of this and because market prices for Conoco Class A common stock and
DuPont common stock may fluctuate over the course of the exchange offer, we
cannot predict what the amount of the premium, if any, will be at the closing of
the exchange offer or the prices at which Conoco or DuPont shares will trade
over time.

     You can calculate the anticipated premium expressed as a percentage using
the following formula:

<TABLE>
<S>  <C>                                                                     <C> <C>  <C>  <C>
 (   (Exchange ratio) X (price of one share of                                   )
 (                                        Conoco Class A common stock)       - 1 )    X    100
     ----------------------------------------------------------------------
 (   Price of one DuPont share                                                   )
</TABLE>

     For example: Assume a price of $68 5/8 for a DuPont share and a price of
$27 3/8 for a Conoco share -- the closing trading prices on the NYSE for shares
of DuPont common stock and Conoco Class A common stock on July 8, 1999. At an
exchange ratio of 2.95 shares of Conoco Class B common stock for each DuPont
share,

                                        5
<PAGE>   6

and assuming the Class B common stock trades at the same price as Conoco Class A
common stock, the anticipated premium would be approximately 18 percent of the
DuPont share price.

     Q12.  ARE THERE ANY CONDITIONS TO DUPONT'S OBLIGATION TO COMPLETE THE
EXCHANGE OFFER?

     A12.  Yes. We do not have to complete the exchange offer unless the
conditions outlined on pages 31-33 are satisfied. In particular, we will not
close the exchange offer unless at least 73,990,436 DuPont shares are tendered
so that at least 50 percent of the shares of Conoco Class B common stock owned
by DuPont can be exchanged. DuPont may at any time waive any or all of the
conditions to the exchange offer.

     Q13.  WHAT HAPPENS IF FEWER THAN 147,980,872 DUPONT SHARES ARE TENDERED
SUCH THAT FEWER THAN 436,543,573 CONOCO SHARES WOULD BE EXCHANGED?

     A13.  We may choose from several alternatives, including divesting some or
all of our remaining shares in a spin-off, secondary sale or other disposition,
or retaining some of our Conoco shares. In a spin-off, some or all of the Conoco
shares still held by DuPont after the exchange offer is completed would be
distributed to the remaining DuPont stockholders on a pro rata basis. In a
secondary sale, we would sell all or a portion of any remaining shares in an
offering that would close following the exchange offer. Alternatively, we may
retain all or a portion of any remaining shares for no longer than five years on
terms consistent with the representations made to the Internal Revenue Service
in connection with the ruling discussed in question 15. However, shares of
Conoco Class B common stock representing at least 80 percent of the total voting
power of Conoco must be distributed in the exchange offer and any subsequent
spin-off taken together.

     Q14.  WHAT HAPPENS IF MORE THAN 147,980,872 DUPONT SHARES ARE TENDERED,
I.E., THE EXCHANGE OFFER IS OVERSUBSCRIBED?

     A14.  If the exchange offer is oversubscribed, all DuPont shares that are
properly tendered will be accepted for exchange on a pro rata basis, except that
tenders by persons who own fewer than 100 shares of DuPont common stock, or
odd-lots, will not be subject to proration. Shares you own in a DuPont or DuPont
affiliated savings plan are not eligible for this preferential treatment.
Proration will be based on the number of DuPont shares each stockholder has
tendered in the offer, and not on the stockholder's aggregate ownership of
DuPont. Any shares not accepted for exchange as a result of proration will be
returned to tendering stockholders in book-entry form. Any fractional shares or
shares not tendered but represented by stock certificates sent in will be
returned in book-entry form. For information on book-entry, see "Book-Entry
Accounts" on page 30.

     Q15.  WILL I BE TAXED ON THE SHARES OF CONOCO THAT I RECEIVE IN THE
EXCHANGE OFFER?

     A15.  DuPont has received a tax opinion from Skadden, Arps, Slate, Meagher
& Flom LLP and a ruling from the IRS to the effect that, for United States
federal income tax purposes, the exchange offer and any subsequent spin-off will
generally be tax-free to DuPont stockholders. The tax opinion and the ruling do
not address state, local or foreign tax consequences that may be applicable to
DuPont stockholders. You should consult your tax advisor as to the particular
tax consequences to you of the exchange offer and any subsequent spin-off.

     Q16.  WHO SHOULD I CALL IF I HAVE QUESTIONS OR WANT COPIES OF ADDITIONAL
DOCUMENTS?

     A16.  You may call the information agent, D.F. King, at (800) 755-3105
(toll free) in the United States to ask any questions or to request additional
documents or (212) 269-5550 (collect) elsewhere.

                                        6
<PAGE>   7

                                    SUMMARY

     As used in this document, unless the context requires otherwise, (1)
references to DuPont or "we" include E. I. du Pont de Nemours and Company and
its consolidated subsidiaries and (2) references to Conoco include Conoco Inc.,
its consolidated subsidiaries and its ownership interest in equity affiliates.
Unless the context otherwise indicates, we have assumed throughout this document
that the exchange offer is fully subscribed and that all shares of Conoco Class
B common stock held by DuPont are distributed through the exchange offer. This
summary highlights selected information from this document but may not contain
all the information that is important to you. To fully understand the exchange
offer and for a more complete description of the legal terms of the exchange
offer, you should read carefully this entire document and the documents to which
we have referred you. To find out how to obtain copies of these documents, see
"Where You Can Find More Information" on page 154.

                      E. I. DU PONT DE NEMOURS AND COMPANY

     DuPont is a world leader in science and technology in a range of
disciplines, including high-performance materials, specialty chemicals,
pharmaceuticals and biotechnology. DuPont has a portfolio of 2,000 trademarks
and brands, including such well-known consumer brands as Lycra(R), Teflon(R),
Stainmaster(R), Kevlar(R), Nomex(R), Tyvek(R), Dacron(R), Cordura(R), Corian(R),
SilverStone(R), and Mylar(R). DuPont operates 200 manufacturing and processing
facilities in 65 countries worldwide.

     DuPont presents its results in eight reportable segments:

     - Agriculture & Nutrition,

     - Nylon Enterprise,

     - Performance Coating & Polymers,

     - Pharmaceuticals,

     - Pigments & Chemicals,

     - Polyester Enterprise,

     - Specialty Fibers, and

     - Specialty Polymers.

The balance of DuPont's continuing operations is reported in another segment
consisting of DuPont's photomasks, safety resources and global services
businesses. DuPont also has petroleum operations conducted through Conoco, which
are reported in DuPont's financial statements as discontinued operations. DuPont
expects to divest the petroleum business from its operations through the
exchange offer. DuPont and its subsidiaries, excluding Conoco, employ
approximately 92,000 people worldwide and have annual revenues of approximately
$25 billion.

     On March 10, 1999, DuPont announced the proposed creation of a tracking
stock for its life sciences businesses, which would be issued to all of its
stockholders. The amendment of DuPont's certificate of incorporation to create
this tracking stock, which is intended to provide investors an opportunity to
invest in a security the terms of which more closely track the economic
performance of DuPont's life sciences businesses, must be approved by DuPont
stockholders. After the issuance of the tracking stock, the existing DuPont
common stock is expected to more closely mirror the performance of its materials
businesses. DuPont anticipates that stockholder approval will be sought in the
first quarter of 2000. In February 1999, the Clinton administration proposed
changes to the federal income tax laws, as part of its budget package, that, if
enacted, could adversely affect the tax consequences relating to the issuance of
tracking stock and, as a result, could adversely affect DuPont's ability to
issue the tracking stock for its life sciences businesses. It is presently
unclear whether this proposal will be enacted into law and, if so, what form it
would take. In the event that the tracking stock proposal is not implemented,
DuPont is unable to estimate what effect, if any, this would have on the trading
price of DuPont common stock.

                                        7
<PAGE>   8

     On March 15, 1999, DuPont agreed to effect a business combination with
Pioneer Hi-Bred International, Inc., the world's largest seed company, in a
stock and cash merger valued at approximately $7.7 billion. DuPont currently has
a 20 percent equity interest in Pioneer, as well as joint venture and other
arrangements with Pioneer. The merger is expected to close during the summer of
1999. For further details, see footnote 1 to "Unaudited Pro Forma Consolidated
Financial Statements of DuPont" on page 48.

     For more details about DuPont's business, see page 86.

     DuPont's principal executive office is located at 1007 Market Street,
Wilmington, Delaware 19898 and its telephone number is (302) 774-1000.

                                  CONOCO INC.

     Conoco is a major, integrated, global energy company operating in 40
countries worldwide. Conoco was founded in 1875 and acquired by DuPont in 1981
and is involved in both the upstream and downstream operating segments of the
petroleum industry. Upstream activities include exploring for, and developing,
producing and selling crude oil, natural gas and natural gas liquids. Downstream
activities include refining crude oil and other feedstocks into petroleum
products, buying and selling crude oil and refined products and transporting,
distributing and marketing petroleum products. Conoco is also engaged in
developing and operating power facilities.

     As of December 31, 1998, Conoco had proved worldwide reserves of 2,622
million barrels of oil equivalent, 39 percent of which were natural gas. In this
document, natural gas volumes have been converted to barrels-of-oil-equivalent
using a ratio of 6,000 cubic feet of natural gas to one
barrel-of-oil-equivalent. Based on 1998 annual production of 213 million
barrels-of-oil-equivalent, excluding natural gas liquids from gas plant
ownership, Conoco had a reserve life of 12.3 years as of December 31, 1998. Over
the last five years, Conoco has replaced an average of 195 percent of the oil
and gas it produced each year. Conoco owns or has equity interests in nine
refineries worldwide, with a total crude oil and condensate processing capacity
of approximately 807,000 barrels per day. Conoco also has a marketing network of
approximately 7,900 outlets in the United States, Europe and Asia.

     Based on public filings, for the year ended December 31, 1998, Conoco
ranked eighth in worldwide production of petroleum liquids by U.S.-based
companies, eleventh in natural gas production and eighth in refining throughput.
Over that same period, Conoco reported net income of $450 million, which
includes a net charge for special items of $271 million, on total revenues of
approximately $23 billion. For the first quarter of 1999, Conoco had net income
of $83 million on total revenues of $5.3 billion. For more details about
Conoco's business, see page 89.

     Conoco's principal executive office is located at 600 North Dairy Ashford,
Houston, Texas 77079 and its telephone number is (281) 293-1000.

                                        8
<PAGE>   9

                          TERMS OF THE EXCHANGE OFFER

Terms of the exchange offer
  (see page 25)................We are offering to exchange 2.95 shares of Conoco
                               Class B common stock for each share of DuPont
                               common stock held by United States persons, up to
                               a maximum of 147,980,872 shares of DuPont common
                               stock tendered. You may tender all, some, or none
                               of your DuPont shares.

                               The exchange offer is available only to United
                               States persons, as explained on page 25. You are
                               urged to consult your tax advisor regarding your
                               status as a United States person.

                               All DuPont shares held by United States persons
                               properly tendered and not withdrawn will be
                               exchanged at the exchange ratio, on the terms and
                               subject to the conditions of the exchange offer,
                               including the proration provisions. We will
                               promptly return to stockholders any DuPont shares
                               not accepted for exchange following the
                               expiration of the exchange offer and
                               determination of the final proration factor.

Expiration date; extension;
termination (see pages 25 and
  31)..........................The exchange offer and withdrawal rights will
                               expire at 12:00 midnight, New York City time, on
                               August 6, 1999, unless extended by DuPont. You
                               must tender your DuPont shares prior to this date
                               if you wish to participate. We may also terminate
                               the exchange offer in the circumstances described
                               on page 31.

Proration; odd-lots (see page
26)............................If more than 147,980,872 DuPont shares are
                               tendered, we will accept all DuPont shares
                               properly tendered on a pro rata basis. We will
                               announce the preliminary proration factor by
                               press release promptly after the exchange offer
                               expires. We expect to announce any final
                               proration factor approximately seven business
                               days after the expiration date.

                               If you owned fewer than 100 shares of DuPont
                               common stock as of July 7, 1999, and tender all
                               of these shares for exchange, you may request
                               preferential treatment by completing the box
                               captioned "Odd-Lot Shares" on the letter of
                               transmittal and, if applicable, on the notice of
                               guaranteed delivery. If your odd-lot shares are
                               held by a broker for your account, you can
                               contact the broker and request the preferential
                               treatment. All of your shares will be accepted
                               for exchange without proration if the exchange
                               offer is completed. Shares you own in a DuPont or
                               DuPont affiliated savings plan are not eligible
                               for this preferential treatment. However, shares
                               you own in a Blueprint brokerage account at
                               Merrill Lynch are eligible for this preferential
                               treatment.

Divestment of any remaining
Conoco shares..................If the number of DuPont shares tendered is such
                               that fewer than 436.5 million shares of Conoco
                               Class B common stock would be exchanged for those
                               DuPont shares, some or all of the Conoco Class B
                               common stock still held by us after the exchange
                               offer is completed may be distributed to the
                               remaining DuPont stockholders on a pro rata basis
                               through a spin-off, sold in a secondary offering
                               or otherwise disposed of. Alternatively, we may
                               retain all or a portion of any

                                        9
<PAGE>   10

                               remaining Conoco shares for up to five years on
                               terms consistent with representations made to the
                               IRS.

Withdrawal rights (see page
30)............................You may withdraw tenders of your DuPont shares at
                               any time before the exchange offer expires. If
                               you change your mind again, you may retender your
                               DuPont shares by following the exchange offer
                               procedures again prior to the expiration of the
                               exchange offer.

Conditions for completion of
the exchange offer (see page
  31)..........................The exchange offer is subject to various
                               conditions, including that at least 73,990,436
                               DuPont shares are tendered.

Procedures for tendering (see
  pages 27-28).................If you hold certificates for DuPont shares, you
                               must complete and sign the letter of transmittal
                               designating the number of DuPont shares you wish
                               to tender. Send it, together with your DuPont
                               share certificates and any other documents
                               required by the letter of transmittal, by
                               registered mail, return receipt requested, so
                               that it is received by the exchange agent at one
                               of the addresses listed on the back cover of this
                               document before the expiration of the exchange
                               offer.

                               If you hold DuPont shares through a broker, you
                               should receive instructions from your broker on
                               how to participate. In this situation, you do not
                               need to complete the letter of transmittal.
                               Please contact your broker directly if you have
                               not yet received instructions. Some financial
                               institutions may also effect tenders by
                               book-entry transfer through The Depository Trust
                               Company.

                               If you hold certificates for DuPont shares or if
                               you hold DuPont shares through a broker, you may
                               also comply with the procedures for guaranteed
                               delivery.

                               If you participate in a DuPont or a DuPont
                               affiliated company savings plan listed on page
                               28, or hold shares in a Blueprint brokerage
                               account at Merrill Lynch, you will receive
                               separate instructions from the trustee or Merrill
                               Lynch on how to tender these DuPont shares. You
                               may not use the letter of transmittal to tender
                               shares held under any such plan.

Delivery of Conoco Class B
  common stock.................We will deliver shares of Conoco Class B common
                               stock by book-entry transfer as soon as
                               practicable after acceptance of DuPont shares for
                               exchange and determination of the proration
                               factor.

Comparative per share market
price information (see pages 35
  and 36)......................The Conoco Class B common stock has been approved
                               for listing on the NYSE under the symbol "COC.B."
                               Shares of DuPont and Conoco Class A common stock
                               are currently listed and traded on the NYSE. The
                               DuPont common stock is traded under the symbol
                               "DD," and the Conoco Class A common stock is
                               traded under the symbol "COC." Upon the closing
                               of the exchange offer, the symbol for the Conoco
                               Class A common stock will be changed to "COC.A."

                               Holders of Conoco Class A common stock and Class
                               B common stock generally have identical rights,
                               including dividend and liquidation rights, except
                               that holders of Conoco Class A common stock are

                                       10
<PAGE>   11

                               \entitled to one vote per share, while holders of
                               Conoco Class B common stock are entitled to five
                               votes per share. The Conoco Class B common stock
                               is anticipated to trade in a similar price range
                               as the Class A common stock. We cannot, however,
                               assure that this will occur.

                               On March 19, 1999, the last trading day before
                               the initial filing of the registration statement
                               relating to the exchange offer, the closing sale
                               price of DuPont common stock on the NYSE was
                              $56 5/8 and the closing sale price of Conoco Class
                               A common stock was $24. On July 8, 1999, the
                               second to last trading day before the start of
                               the exchange offer, the closing sale price of
                               DuPont common stock on the NYSE was $68 5/8, and
                               the closing sale price of Conoco Class A common
                               stock on the NYSE was $27 3/8.

United States federal income
tax consequences (see page
  152).........................We have received a tax opinion from Skadden,
                               Arps, Slate, Meagher & Flom LLP and a ruling from
                               the IRS to the effect that the exchange offer and
                               any subsequent spin-off generally will be
                               tax-free to DuPont and its stockholders. Each
                               stockholder should consult his or her tax advisor
                               as to the particular tax consequences of the
                               exchange offer and any subsequent spin-off.

No appraisal rights............No appraisal rights are available to stockholders
                               of DuPont or Conoco in connection with the
                               exchange offer.

Exchange agent.................First Chicago Trust Company of New York

Information agent..............D.F. King & Co., Inc.

Dealer manager.................Morgan Stanley & Co. Incorporated

Risk factors (see page 18).....You should consider carefully the matters
                               described under the caption "Risk Factors," as
                               well as the other information set forth in this
                               document.

Determining whether to
participate in the exchange
  offer........................Neither DuPont nor Conoco nor any of their
                               officers or directors makes any recommendation as
                               to whether you should tender your DuPont shares.
                               You must make your own decision whether to tender
                               and, if so, how many shares to tender after
                               reading this document and consulting with your
                               advisors based on your own financial position and
                               requirements. In addition, you should consult
                               your tax advisor regarding your status as a
                               United States person to determine your
                               eligibility to participate in the exchange offer.
                               We urge you to read this document very carefully.

                                       11
<PAGE>   12

           SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF DUPONT

     The following table contains summary consolidated historical and pro forma
financial data of DuPont's continuing operations as of the dates and for the
periods indicated. The pro forma information is provided to aid in your analysis
of the financial aspects of the exchange offer and cash offer. This information
may not necessarily reflect the results of operations, financial position and
cash flows of DuPont in the future. The information is only a summary and you
should read it together with the pro forma unaudited consolidated financial
statements of DuPont included elsewhere in this document and with the
consolidated financial statements and "Management's Discussion and Analysis of
Financial Condition and Results of Operations" located in the DuPont 1998 Form
10-K/A and the DuPont Form 10-Q/A for the quarter ended March 31, 1999, which we
have filed with the SEC, and which we have incorporated in this document by
reference. To find out where you can obtain copies of DuPont's SEC filings, see
"Where You Can Find More Information" on page 154.

     The pro forma financial data for DuPont give effect to the following
transactions and events:

     - the split-off of Conoco through an exchange of 100 percent of the
       436,543,573 shares of Conoco Class B common stock held by DuPont for
       DuPont common stock held by United States persons. At the exchange ratio
       of 2.95 shares of Conoco Class B common stock for each share of DuPont
       common stock, 147,980,872 shares of DuPont are assumed acquired.

     - a cash offer of $80.76 a share to purchase a maximum of 8,000,000 shares
       of DuPont common stock held by persons that are not United States
       persons.

     - various payments received by DuPont from Conoco in connection with
       Conoco's repayment of intercompany indebtedness to DuPont as part of the
       separation:

        -- receipt by DuPont of Conoco's initial public offering proceeds of
           $4,228 million in October 1998.

        -- receipt by DuPont in April 1999 of $3,970 million from Conoco's sale
           of senior debt securities.

        -- receipt by DuPont in May 1999 of $1,022 million from Conoco's sales
           of commercial paper.

     The historical financial statements of DuPont reflect these payments as of
the dates received. To the extent these events are not reflected in the
historical income statements, the unaudited pro forma income statements for
DuPont assume that these transactions occurred as of the beginning of the
periods presented. To the extent these events are not reflected in the
historical balance sheet, the unaudited pro forma balance sheet assumes that
these transactions occurred as of March 31, 1999.

                                       12
<PAGE>   13

                                     DUPONT
<TABLE>
<CAPTION>
                                                  THREE MONTHS
                                                ENDED MARCH 31,                 YEAR ENDED DECEMBER 31,
                                                ----------------    -----------------------------------------------
                                                 1999      1998      1998      1997      1996      1995      1994
                                                 ----      ----      ----      ----      ----      ----      ----
                                                  (UNAUDITED)
<S>                                             <C>       <C>       <C>       <C>       <C>       <C>       <C>
STATEMENT OF INCOME DATA:                                      (IN MILLIONS, EXCEPT PER SHARE DATA)
Sales.........................................  $6,295    $6,194    $24,767   $24,089   $23,644   $24,500   $22,518
Other Income..................................      18(1)    297        981     1,005     1,101       797       674
                                                ------    ------    -------   -------   -------   -------   -------
   Total......................................   6,313     6,491     25,748    25,094    24,745    25,297    23,192
Cost of Goods Sold and Other Operating
 Charges......................................   3,873     4,049     15,664    15,564    15,314    15,572    14,498
Selling, General and Administrative
 Expenses.....................................     535       479      2,115     2,061     2,119     2,283     2,215
Depreciation and Amortization.................     335       332      1,452     1,361     1,526     1,643     1,748
Research and Development Expense..............     358       264      1,308     1,072       990     1,031     1,004
Interest Expense..............................      96       127        520       389       409       449       343
Purchased In-Process Research and
 Development..................................      40        60      1,443     1,478        --        --        --
Employee Separation Costs and Write-down of
 Assets.......................................      --       118        633       340        --        --        --
                                                ------    ------    -------   -------   -------   -------   -------
       Total..................................   5,237     5,429     23,135    22,265    20,358    20,978    19,808
Income from Continuing Operations Before
 Income Taxes and Minority Interests..........   1,076     1,062      2,613     2,829     4,387     4,319     3,384
Provision for Income Taxes....................     432       417        941     1,354     1,416     1,432     1,164
Minority Interests in Earnings of Consolidated
 Subsidiaries.................................      16         8         24        43        40        29        15
                                                ------    ------    -------   -------   -------   -------   -------
   Income from Continuing Operations..........  $  628    $  637    $ 1,648   $ 1,432   $ 2,931   $ 2,858   $ 2,205
                                                ======    ======    =======   =======   =======   =======   =======
Basic Earnings Per Share of Common Stock --
 Continuing Operations........................  $ 0.55    $ 0.56    $  1.45   $  1.26   $  2.60   $  2.43   $  1.61
Diluted Earnings Per Share of Common Stock --
 Continuing Operations........................  $ 0.55    $ 0.55    $  1.43   $  1.24   $  2.56   $  2.41   $  1.60
Dividends Per Common Share....................  $ 0.35    $0.315    $ 1.365   $  1.23   $ 1.115   $ 1.015   $  0.91
Weighted Average Number of Shares Outstanding
 (millions):
 Basic........................................   1,127     1,128      1,129     1,131     1,121     1,170     1,360
 Diluted......................................   1,138     1,146      1,145     1,150     1,140     1,183     1,371

OTHER DATA:
Cash Provided by Continuing
 Operations...................................  $  147    $  152    $ 4,132   $ 4,027   $ 4,109   $ 5,170   $ 3,697
Cash Used for Investment Activities of
 Continuing Operations........................  (2,086)   (1,040)     (178)    (4,022)     (987)   (1,286)   (1,744)
Cash Used for Financing Activities............   2,242     2,103    (3,053)      (451)   (4,018)   (3,571)   (2,878)

BALANCE SHEET DATA:
Cash and Cash Equivalents.....................  $1,003    $2,024    $ 1,059   $ 1,004   $ 1,066   $ 1,408   $   856
Working Capital...............................  (3,872)   (2,374)    (2,374)   (2,110)       15    (2,116)    3,208
Net Property, Plant and Equipment.............  14,817    13,092     14,131    12,601    10,959    11,389    11,385
Total Assets..................................  41,967    39,797     38,536    36,689    32,342    32,748    32,577
Long-Term Borrowings and Capital Lease
 Obligations..................................   4,566     6,402      4,495     5,897     5,052     5,646     6,338
Minority Interests............................     464       381        407       361       315       223       192
Stockholders' Equity..........................  14,133    11,629     13,954    11,270    10,593     8,323    12,743

<CAPTION>
                                                   PRO FORMA AS      PRO FORMA FOR
                                                  OF AND FOR THE     THE YEAR ENDED
                                                THREE MONTHS ENDED    DECEMBER 31,
                                                  MARCH 31, 1999          1998
                                                ------------------   --------------
                                                   (UNAUDITED)        (UNAUDITED)
<S>                                             <C>                  <C>
STATEMENT OF INCOME DATA:
Sales.........................................        $6,295            $24,767
Other Income..................................            18                981
                                                      ------            -------
   Total......................................         6,313             25,748
Cost of Goods Sold and Other Operating
 Charges......................................         3,873             15,664
Selling, General and Administrative
 Expenses.....................................           535              2,115
Depreciation and Amortization.................           335              1,452
Research and Development Expense..............           358              1,308
Interest Expense..............................           118                513
Purchased In-Process Research and
 Development..................................            40              1,443
Employee Separation Costs and Write-down of
 Assets.......................................            --                633
                                                      ------            -------
       Total..................................         5,259             23,128
Income from Continuing Operations Before
 Income Taxes and Minority Interests..........         1,054              2,620
Provision for Income Taxes....................           421                919
Minority Interests in Earnings of Consolidated
 Subsidiaries.................................            16                 24
                                                      ------            -------
   Income from Continuing Operations..........        $  617            $ 1,677
                                                      ======            =======
Basic Earnings Per Share of Common Stock --
 Continuing Operations........................        $ 0.63            $  1.71
Diluted Earnings Per Share of Common Stock --
 Continuing Operations........................        $ 0.63            $  1.69
Dividends Per Common Share....................
Weighted Average Number of Shares Outstanding
 (millions):
 Basic........................................           971                973
 Diluted......................................           982                988
OTHER DATA:
Cash Provided by Continuing
 Operations...................................
Cash Used for Investment Activities of
 Continuing Operations........................
Cash Used for Financing Activities............
BALANCE SHEET DATA:
Cash and Cash Equivalents.....................        $1,003
Working Capital...............................           283
Net Property, Plant and Equipment.............        14,817
Total Assets..................................        33,317
Long-Term Borrowings and Capital Lease
 Obligations..................................         4,566
Minority Interests............................           464
Stockholders' Equity..........................         9,638
</TABLE>

- ------------
(1) Includes an exchange loss of $131 on forward exchange contracts purchased in
    1998 to fix in U.S. dollars the cash required to acquire Herberts, the
    automotive coatings business of Hoechst AG. The purchase price for Herberts
    was negotiated in German marks.

                                       13
<PAGE>   14

           SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF CONOCO

     The following table contains summary historical and pro forma financial
data of Conoco as of the dates and for the periods indicated. The pro forma
information is provided to aid in your analysis of the financial aspects of the
exchange offer. The information may not necessarily reflect the results of
operations, financial position and cash flows of Conoco in the future or what
the results of operations, financial position and cash flows would have been had
Conoco been a separate, stand-alone entity during all of the periods presented.
The information is only a summary and you should read it together with the
consolidated financial statements of Conoco, the pro forma financial statements
of Conoco and the other information about Conoco included elsewhere in this
document. You should also read the "Risk Factors" and "Management's Discussion
and Analysis of Financial Condition and Results of Operations of Conoco" and
"Business of Conoco" sections of this document, which describe Conoco's
business, as well as a number of factors that have affected Conoco's financial
results, including declining crude oil and natural gas prices.

     The pro forma financial data for Conoco give effect to the following
transactions and events:

     - the split-off of Conoco through an exchange of 100 percent of the
       436,543,573 shares of Conoco Class B common stock held by DuPont for
       DuPont common stock held by United States persons; and

     - various payments made by Conoco to DuPont in connection with Conoco's
       repayment of intercompany indebtedness to DuPont as part of the
       separation:

      -- payment by Conoco to DuPont in October 1998 of $4,228 million from
        Conoco's initial public offering proceeds.

      -- payment by Conoco to DuPont in April 1999 of $3,970 million from
        Conoco's sale of senior debt securities.

      -- payment by Conoco to DuPont in May 1999 of $1,022 million from Conoco's
        sales of commercial paper.

     The historical financial statements of Conoco reflect these payments as of
the dates made. To the extent these events are not reflected in the historical
consolidated income statements of Conoco, the unaudited pro forma consolidated
income statements assume that these transactions occurred as of the beginning of
the periods presented. To the extent these events are not reflected in the
historical balance sheet, the unaudited pro forma balance sheet assumes that
these transactions occurred as of March 31, 1999.

     Except where otherwise indicated, reserve and production information in the
following tables includes Conoco's share of equity affiliates. Oil includes
crude oil, condensate and natural gas liquids expected to be removed for
Conoco's account from its natural gas production.

                                       14
<PAGE>   15

                                     CONOCO

<TABLE>
<CAPTION>
                                                                                                    PRO FORMA AS
                                 THREE MONTHS                                                     ADJUSTED FOR THE  PRO FORMA AS
                                     ENDED                                                          THREE MONTHS    ADJUSTED FOR
                                   MARCH 31,                  YEAR ENDED DECEMBER 31,                  ENDED       THE YEAR ENDED
                                ---------------   -----------------------------------------------    MARCH 31,      DECEMBER 31,
                                 1999     1998     1998      1997      1996      1995      1994         1999            1998
                                 ----     ----     ----      ----      ----      ----      ----   ---------------- --------------
                                                              (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                             <C>      <C>      <C>       <C>       <C>       <C>       <C>     <C>              <C>
STATEMENT OF INCOME DATA:
Total Revenues(1).............  $5,335   $5,834   $23,168   $26,263   $24,416   $20,518   $19,433      $5,335         $23,110
Cost of Goods Sold and Other
 Operating Expenses...........   3,005    3,393    13,840    16,226    14,560    11,146    10,640       3,005          13,840
Selling, General and
 Administrative Expenses......     186      183       736       726       755       728       679         186             736
Stock Option Provision........      --       --       236        --        --        --        --          --             236
Exploration Expenses(2).......      46       67       380       457       404       331       357          46             380
Depreciation, Depletion and
 Amortization.................     302      267     1,113     1,179     1,085     1,067     1,244         302           1,113
Taxes Other Than on
 Income(1)....................   1,591    1,417     5,970     5,532     5,637     5,823     5,477       1,591           5,970
Interest and Debt Expense.....      71        1       199        36        74        74        63          71             225
                                ------   ------   -------   -------   -------   -------   -------      ------         -------
Income Before Income Taxes....     134      506       694     2,107     1,901     1,349       973         134             610
Provision for Income Taxes....      51      190       244     1,010     1,038       774       551          51             218
                                ------   ------   -------   -------   -------   -------   -------      ------         -------
   Net Income(3)..............  $   83   $  316   $   450   $ 1,097   $   863   $   575   $   422      $   83         $   392
                                ======   ======   =======   =======   =======   =======   =======      ======         =======
Segment Net Income:
Upstream:
 United States................  $   40   $   88   $   219   $   445   $   314   $   258   $   248
 International................      68      143       283       439       367       234       250
Downstream:
 United States................      17       34       135       216       172       112       104
 International................      23       57       156        91       117       121       137
Corporate and Other(3)........     (65)      (6)     (343)      (94)     (107)     (150)     (317)
                                ------   ------   -------   -------   -------   -------   -------
                                $   83   $  316   $   450   $ 1,097   $   863   $   575   $   422
                                ======   ======   =======   =======   =======   =======   =======
Earnings Per Share
 Basic........................  $ 0.13   $ 0.72   $  0.95   $  2.51   $  1.98   $  1.32   $  0.97      $ 0.13         $  0.62
 Diluted......................  $ 0.13   $ 0.72   $  0.95   $  2.51   $  1.98   $  1.32   $  0.97      $ 0.13         $  0.62
Weighted Average Shares
 Outstanding
 Basic........................     628      437       474       437       437       437       437         628             628
 Diluted......................     635      437       475       437       437       437       437         635             637
Dividends Per Share of Common
 Stock(4).....................  $ 0.14   $   --   $    --   $    --   $    --   $    --   $    --
OTHER DATA:
Cash Provided By Operations...  $  393   $   12   $ 1,373   $ 2,876   $ 2,396   $ 1,924   $ 2,143
Capital Expenditures and
 Investments..................     415      431     2,516     3,114     1,944     1,837     1,665
Cash Used for Investing
 Activities...................     547      165     1,598     2,037     1,647     1,677     1,364
Cash Used for (Provided from)
 Financing Activities.........    (188)     262       555       499       187       313       773
Cash Exploration Expense......      28       43       217       286       262       204       200
</TABLE>

- ------------
(1) Includes petroleum excise taxes of $5,801, $5,349, $5,461, $5,655, and
    $5,291 for 1998, 1997, 1996, 1995 and 1994, and of $1,546 and $1,373 for the
    first three months of 1999 and 1998. Petroleum excise taxes for pro forma
    presentation are the same as in the applicable historical periods presented.

(2) Includes cash exploration overhead and operating expense, DD&A, dry hole
    costs and impairments of unproved properties.

(3) Includes after-tax exchange gains (losses) of $32, $21, $(7), $(40) and
    $(143) for 1998, 1997, 1996, 1995 and 1994, $2 and $7 for the first three
    months of 1999 and 1998 and $23 for the pro forma as adjusted for the year
    ended December 31, 1998 and $2 pro forma as adjusted for the three months
    ended March 31, 1999.

(4) Conoco's initial dividend was determined on a pro rata basis covering the
    period from October 27, 1998, the closing date of Conoco's initial public
    offering, to December 31, 1998, and is equivalent to $0.19 per share for a
    full quarter.

                                       15
<PAGE>   16

                                     CONOCO

<TABLE>
<CAPTION>
                                            THREE MONTHS                                                         PRO FORMA
                                               ENDED                                                            AS ADJUSTED
                                             MARCH 31,                         DECEMBER 31,                        AS OF
                                            ------------      -----------------------------------------------    MARCH 31,
                                          1999       1998      1998      1997      1996      1995      1994         1999
                                          ----       ----      ----      ----      ----      ----      ----     ------------
                                                                               (IN MILLIONS)
<S>                                      <C>        <C>       <C>       <C>       <C>       <C>       <C>       <C>
BALANCE SHEET DATA:
Cash and Cash Equivalents..............  $   425    $   729   $   394   $ 1,147   $   846   $   286   $   319     $    399
Working Capital........................     (706)(1)     569       45       567       862       999     1,790         (706)(1)
Net Property, Plant and Equipment......   11,230     10,831    11,413    10,828    10,082     9,758     9,522       11,230
Total Assets...........................   16,080     16,716    16,075    17,062    15,226    14,229    15,271       16,082
Long-Term Borrowings -- Related
  Parties..............................    3,970      1,567     4,596     1,450     2,287     2,141     2,279           --
Other Long-Term Borrowings and Capital
  Lease Obligations....................       93        103        93       106       101        65       342        4,091
Total Stockholders' Equity/Owner's Net
  Investment...........................    4,342      7,936     4,438     7,896     6,579     6,754     7,274        4,342
</TABLE>

<TABLE>
<S>                                                         <C>       <C>       <C>       <C>       <C>       <C>
OPERATING DATA:
Proved Reserves at December 31:
  Oil (MMbbls)............................................    1,591     1,624       973       977       988
  Natural Gas (Bcf).......................................    6,183     5,861     5,396     5,048     4,674
  Total Proved Reserves (MMBOE)...........................    2,622     2,601     1,872     1,818     1,767
International Proved Reserves (% of Total)................       73%       73%       65%       63%       61%
Reserve Replacement Ratio.................................      110%      448%      126%      127%      157%
Reserve Life (years)(2)...................................     12.3      12.4       8.9       9.3       8.2
Finding and Development Costs
  per BOE(3)..............................................  $  4.03   $  3.63   $  4.84   $  5.39   $  6.24
Average Daily Production:
  Oil (Mbbls/day).........................................      348       374       374       346       367
  Natural Gas (MMcf/day)..................................    1,411     1,203     1,211     1,126     1,327
  Total Production (MBOE/day).............................      583       575       576       534       588
Average Production Costs per BOE(4).......................  $  3.95   $  4.21   $  3.84   $  3.92   $  3.59
Refinery Capacity at December 31 (Mbbls/day)(5)...........      807       754       743       621       602
Refinery Utilization(5)...................................       92%       91%       83%       97%       99%
Total Refinery Inputs (Mbbls/day)(6)......................      823       780       732       721       697
Sales of Refined Products (Mbbls/day).....................    1,049     1,048       998       983       931
Retail Marketing Outlets at December 31(7):
  United States...........................................    4,897     4,903     4,976     5,125     5,196
  International...........................................    3,023     2,971     2,874     2,390     2,438
</TABLE>

- ------------
(1) The working capital deficit results from the issuance of short-term
    commercial paper to repay the remaining related-party debt owed to DuPont.
    For detailed information, see Conoco's unaudited pro forma financial
    statements on page 52.

(2) Total proved reserves at December 31 divided by annual production, excluding
    natural gas liquids from gas plant ownership.

(3) Finding and development costs per barrel-of-oil-equivalent represent a
    trailing five-year average for each year displayed.

(4) Excludes equity affiliates and processed natural gas liquids.

(5) Based on rated capacity to process crude oil and condensate excluding other
    feedstocks.

(6) Includes crude oil, condensate and other feedstocks. This does not include
    Conoco's indirect 1.2 percent interest in a 95,000 barrel per day refinery
    in Mersin, Turkey, acquired as a result of Conoco's marketing joint venture
    in Turkey.

(7) Represents outlets owned by Conoco and others that sell Conoco's refined
    products.

                                       16
<PAGE>   17

RECENT RESULTS

     Although Conoco's results from operations for the second quarter of 1999
are not finalized, the following statements reflect Conoco's expectations based
on currently available information.

     Crude oil prices have risen globally in the second quarter of 1999 due
primarily to supply reductions resulting from the lower production rates
implemented by OPEC countries during the first quarter of 1999. Conoco's
worldwide net realized crude oil price for the second quarter of 1999 will be
higher than the $11.00 per barrel price realized in the first quarter of 1999
and the $12.45 per barrel price realized in the second quarter of 1998. By
contrast, lower seasonal demand, particularly outside the U.S., is expected to
result in worldwide net realized natural gas prices being lower than the $2.08
per thousand cubic feet price realized in the first quarter of 1999 and the
$2.15 per thousand cubic feet realized in the second quarter of 1998.

     Worldwide crude oil production in the second quarter of 1999 will be
slightly lower than the 326,000 barrels per day of production in the first
quarter of 1999 but at similar levels versus the second quarter of 1998. Lower
seasonal demand, primarily from outside of the U.S., is expected to result in
reduced worldwide natural gas deliveries in the second quarter of 1999 versus
the 1,816 million cubic feet per day produced in the previous quarter. However,
natural gas production is much higher (approximately 15 percent) than the second
quarter of 1998, due to the start-up of the Britannia field in the U.K. sector
of the North Sea and higher production from the Lobo field in south Texas.

     Downstream refining volumes will be slightly higher than in the first
quarter of 1999, and also higher than the second quarter of 1998, due primarily
to the startup of the Melaka refinery in Malaysia. Refining margins continue to
be depressed in the second quarter of 1999.

     Additionally, non-operating expenses will be slightly higher than the first
quarter of 1999, but significantly higher than the second quarter of 1998 due to
higher interest expense resulting from Conoco's separation from DuPont.

     Based on these factors, Conoco expects 1999 second quarter net income to be
slightly higher than the $83 million reported in the first quarter of 1999.
These expectations include an approximate $19 million after-tax charge related
to a recently completed but unsuccessful exploration well drilled in New
Zealand. Actual results may differ materially from these second quarter
estimates.

                                       17
<PAGE>   18

                                  RISK FACTORS

     You should consider carefully all of the information set forth or
incorporated by reference in this document and, in particular, the following
risk factors in considering whether or not to tender your DuPont shares under
the exchange offer. In addition, for a discussion of additional uncertainties
associated with (1) the businesses of DuPont and Conoco and (2) forward-looking
statements in this document, please see "Special Note on Forward-Looking
Information" on page 37.

TENDERING AND NONTENDERING STOCKHOLDERS ARE AFFECTED DIFFERENTLY BY THE EXCHANGE
OFFER

     Your investment will be subject to different risks as a result of the
exchange offer, regardless of whether you tender your DuPont shares. DuPont will
no longer have access to the cash flow, assets and operations of Conoco, which
may adversely affect its ability to finance its:

     - research and development activities;

     - capital expenditures;

     - working capital;

     - dividends; and

     - other general corporate requirements.

Whether you tender your shares or not, the shares you hold after the exchange
offer will be in a company which is very different from the company in which you
held shares before the exchange offer.

THE IRS MAY TREAT THE TRANSACTION AS TAXABLE TO DUPONT AND ITS STOCKHOLDERS IF
REPRESENTATIONS MADE TO THE IRS WERE INACCURATE OR IF UNDERTAKINGS MADE TO THE
IRS ARE NOT COMPLIED WITH

     DuPont has received a ruling from the IRS to the effect that, for United
States federal income tax purposes, the exchange offer and any subsequent
spin-off will generally be tax-free to DuPont stockholders and to DuPont. DuPont
and its stockholders that receive Conoco shares could be subject to a material
amount of taxes as a result of the exchange offer, or any subsequent spin-off,
if Conoco and DuPont do not comply with the undertakings they made to the IRS in
connection with obtaining the ruling, or if the representations made by Conoco
and DuPont to the IRS in connection with obtaining the ruling are determined to
be inaccurate. Conoco will be liable to DuPont for any corporate level taxes
incurred by DuPont to the extent such taxes are attributable to specified
actions or failures to act by Conoco, or to specified transactions involving
Conoco following the exchange offer and any subsequent spin-off. For a
description of material United States federal income tax consequences to DuPont
stockholders of the exchange offer and any subsequent spin-off, see "United
States Federal Income Tax Consequences" on page 152. For a summary of DuPont's
and Conoco's obligations in connection with obtaining the ruling and potential
tax liabilities if the transaction is held to be taxable, see "Arrangements
Between Conoco and DuPont -- Tax Sharing Agreement" on page 148.

TENDERING STOCKHOLDERS MAY NOT RECEIVE ANY PREMIUM

     DuPont cannot predict whether there will be a premium at the end of the
exchange offer. Accordingly, if you tender your DuPont shares, you may not
receive any premium. The anticipated premium is based on the market prices for
Conoco Class A common stock and DuPont common stock immediately prior to the
commencement of the exchange offer. Any premium to be received by DuPont
stockholders participating in the exchange offer will depend on the prices for
DuPont shares and Conoco Class B common stock at the closing of the exchange
offer. DuPont also cannot predict the prices at which shares of Conoco or DuPont
will trade over time.

MARKET PRICES FOR CONOCO CLASS B COMMON STOCK MAY VARY FROM MARKET PRICES FOR
CONOCO CLASS A COMMON STOCK

     Market prices for Conoco Class B common stock may not be the same as market
prices for Conoco Class A common stock. Although the Conoco Class B common stock
has substantially identical rights to the Class A common stock, other than
voting rights, it is nevertheless possible that market prices for the Conoco
Class B common stock could be lower than those of the Conoco Class A common
stock.

                                       18
<PAGE>   19

THE SPLIT-OFF WILL CAUSE DUPONT'S ASSETS AND TOTAL CAPITALIZATION TO DECREASE

     Assuming the exchange offer is fully subscribed, DuPont will no longer own
any of the outstanding stock of Conoco. Accordingly, DuPont's balance sheet and
income statement will no longer reflect the assets and operations of Conoco, and
the total market capitalization of DuPont is expected to decrease considerably.
Upon completion of the exchange offer, DuPont will no longer have access to the
cash flow provided by Conoco. In the past, DuPont has utilized this cash flow to
finance research and development activities, capital expenditures, working
capital, dividends and for other general corporate purposes. For more
information on the financial effect on DuPont of the split-off, see "Unaudited
Pro Forma Consolidated Financial Statements of DuPont" on page 43.

LOW OIL AND GAS PRICES HAVE NEGATIVELY AFFECTED CONOCO'S FINANCIAL RESULTS AND
MAY CONTINUE TO DO SO IN THE FUTURE

     Crude oil prices declined substantially in 1998 and in early 1999 and these
depressed prices could reoccur. Decreases in crude oil and natural gas prices
and refined product margins adversely affect Conoco. Lower crude oil and natural
gas prices had a significant negative impact on Conoco's financial results in
1998 and in the first quarter of 1999. Conoco's net income fell 59 percent in
1998 compared to 1997. As a result of reduced crude oil and petroleum product
price levels in 1998, Conoco wrote down its inventories by $97 million in the
fourth quarter of 1998 in accordance with Conoco's inventory valuation policy.
Future declines in commodity prices could necessitate further write-downs. Lower
crude oil and natural gas prices may reduce the amount of oil and natural gas
reserves Conoco can produce economically, and existing contracts that Conoco has
entered into may become uneconomic.

     Conoco has no control over many factors affecting prices for its products.
Prices for crude oil, natural gas, and refined products may fluctuate widely in
response to changes in global and regional supply, political developments and
the ability of the Organization of Petroleum Exporting Countries and other
producing nations to set and maintain production levels and prices. Prices for
crude oil, natural gas and refined products are also affected by changes in
demand for these products, which may result from global events, as well as
supply and demand in industrial markets, such as the steel and aluminum markets.
For a discussion of recent oil and gas prices and their effect on Conoco, see
"Management's Discussion and Analysis of Financial Condition and Results of
Operations of Conoco" on pages 70-71 and 73-74.

GLOBAL POLITICAL AND ECONOMIC DEVELOPMENTS MAY HURT CONOCO'S OPERATIONS

     Local political and economic factors in international markets may have a
material adverse effect on Conoco. Approximately 43 percent of Conoco's sales in
1998 were derived from markets outside the United States, and approximately 73
percent of Conoco's proved reserves at December 31, 1998 were located outside of
the United States.

     There are many risks associated with operations in international markets,
including changes in foreign governmental policies relating to crude oil,
natural gas or refined product pricing and taxation, other political, economic
or diplomatic developments, changing political conditions and international
monetary fluctuations. These risks include:

     - political and economic instability or war;

     - the possibility that a foreign government may seize Conoco's property
       with or without compensation;

     - confiscatory taxation;

     - a foreign government attempting to renegotiate or revoke existing
       contractual arrangements; and

     - fluctuating currency values, hard currency shortages and currency
       controls.

Recent turmoil in regions such as Russia, Southeast Asia and South America has
subjected Conoco's operations in these regions to increased risks.

     Actions of the United States government through tax and other legislation,
executive order and commercial restrictions could adversely affect Conoco's
operating profitability both in the U.S. and overseas. The United States
government can prevent or restrict Conoco from doing business in foreign
countries. These restrictions and those of foreign governments have in the past
limited Conoco's ability to operate in or gain access to

                                       19
<PAGE>   20

opportunities in various countries. Various agencies of the United States and
other governments have from time to time imposed restrictions on Conoco's
ability to operate in or gain attractive opportunities in various countries.
Actions by both the United States and host governments have affected operations
significantly in the past and will continue to do so in the future.

     Conoco is also exposed to risks associated with fluctuations in foreign
currency exchange rates as indicated in "Management's Discussion and Analysis of
Financial Condition and Results of Operations of Conoco -- Market
Risks -- Foreign Currency Risk" on page 85.

CONOCO AND DUPONT MAY HAVE CONFLICTS OF INTEREST

     Conflicts of interest may arise between Conoco and DuPont in a number of
areas relating to their past and ongoing relationships including the nature,
quality and pricing of services rendered by the parties to each other. A
majority of Conoco's current board of directors are designees of DuPont. In
addition, several current members of Conoco's board hold positions with DuPont.
Following the exchange offer it is expected that only one person will be a
director on both DuPont's and Conoco's board of directors, although depending on
the level of any remaining shareholdings in Conoco, DuPont may retain the right
to designate up to two directors on Conoco's board. The director holding
positions in both companies, as well as the other directors designated by
DuPont, may face conflicts of interest with respect to such matters as
acquisitions, finances and other corporate opportunities that might be suitable
for both Conoco and DuPont. For more information on the connections between
Conoco's directors and DuPont, see "Management -- Directors and Executive
Officers" on page 121.

     For purposes of governing their ongoing relationship, Conoco and DuPont
have entered into various agreements involving the provision of services such as
natural gas and gas liquids supply, technical, processing, purchasing, legal and
computer services. These agreements were negotiated in the context of a
parent-subsidiary relationship. As a result, these agreements or the related
transactions may have been on terms less favorable to Conoco than could have
been obtained from unaffiliated third parties. For more information on these
intercompany agreements, see "Arrangements Between Conoco and DuPont" on page
146.

THE OIL AND GAS RESERVES DATA IN THIS DOCUMENT ARE ONLY ESTIMATES, AND MAY PROVE
TO BE INACCURATE

     The reserve data included in this document represent estimates only. Actual
production, revenues and expenditures with respect to Conoco's reserves will
probably vary from these estimates, and such variances may be material. Many of
the factors, assumptions and variables involved in estimating reserves are
beyond the control of Conoco, and may prove to be incorrect over time.

     The reliability of reserve estimates depends on the quality and quantity of
technical and economic data, the production performance of the reservoirs and
extensive engineering judgment. Results of drilling, testing and production
after the date of the estimates may require substantial upward or downward
revisions. Adverse changes in economic conditions, including a drop in crude oil
or natural gas prices, may render it uneconomical to produce reserves that are
more expensive to produce. For more information on Conoco's oil and gas reserves
data, see "Business of Conoco -- Upstream" on page 90.

CONOCO'S GROWTH DEPENDS ON FINDING NEW RESERVES

     Conoco's ability to achieve its growth objectives depends upon its success
in finding, acquiring or gaining access to additional reserves. Conoco's future
drilling, exploration and acquisition activities may not be successful. If these
activities are unsuccessful, this failure would have an adverse effect on
Conoco's future results of operations and financial condition.

     In general, production from oil and natural gas properties declines as
reserves are depleted, with the rate of decline depending on reservoir
characteristics. If Conoco does not conduct successful exploration and
development activities, or acquire properties containing proved reserves, its
total proved reserves will decline.

     Conoco's exploration and development activities expose it to inherent
drilling risks, including the risk that it will not find any economically
productive natural gas or oil reservoirs. The costs of drilling, completing and
operating wells are often uncertain, and numerous factors beyond Conoco's
control may cause drilling operations to be curtailed, delayed or cancelled.

                                       20
<PAGE>   21

RISK OF FUTURE ACQUISITIONS AND OTHER TRANSACTIONS BY DUPONT AND CONOCO

     Each of DuPont and Conoco, in the ordinary course and on a regular basis,
engages in discussions with other companies in their respective industries
concerning possible acquisitions, divestitures, mergers, joint ventures,
research alliances and other types of transactions, many of which are or could
be material to DuPont or Conoco. Such transactions are often dilutive to
earnings, particularly on a pro forma basis and in the early years following
their completion. Such transactions may also turn out to be beneficial. Holders
whose shares are exchanged in the exchange offer will not participate in the
benefits and risks of future transactions by DuPont. DuPont is currently engaged
in discussions in a number of different areas, including pharmaceuticals, with
other companies relating to transactions of the types described above. In this
regard, DuPont announced at its annual meeting of stockholders in April 1999
that it would seek to enter into an alliance to strengthen its pharmaceutical
business.

     DuPont has also entered into a merger agreement to acquire the portion of
Pioneer it does not currently own for approximately $7.7 billion in cash and
DuPont stock. In the year 2000, the first full year of combined operations with
Pioneer, DuPont expects fully diluted earnings per share, excluding the impact
of nonrecurring items, to be reduced by about seven percent as the result of
increased interest expense and purchase price amortization of intangible assets
associated with the acquisition. Preliminary analysis indicates that 1999 pro
forma earnings, assuming the merger took place on January 1, 1999, could show
even more dilution due to the required exclusion under pro forma rules of future
operating benefits DuPont expects to realize from the combined operations.
Actual dilution will be dependent on many factors including earnings of DuPont
and Pioneer after the merger, allocations of purchase price, including amounts
assigned to purchased in-process research and development, the number of DuPont
shares acquired under the exchange offer and cash offer, and the number of
DuPont shares issued to acquire Pioneer.

CONOCO MAY INCUR MATERIAL COSTS TO COMPLY WITH ENVIRONMENTAL REGULATIONS

     Compliance with environmental regulations could have a material adverse
effect on Conoco. Conoco incurs, and expects to continue to incur, substantial
capital and operating costs to comply with increasingly complex laws and
regulations covering the protection of the environment, including costs to
remediate contamination at various owned and previously owned facilities and at
third-party sites where Conoco's products or wastes have been handled or
disposed.

     New laws and regulations, the imposition of tougher requirements in
permits, increasingly strict enforcement of existing laws and regulations or the
discovery of previously unknown contamination may require future expenditures
to:

     - modify operations;

     - install pollution control equipment;

     - perform site clean ups; or

     - curtail Conoco's operations.

These future expenditures or curtailments could have a material adverse effect
on Conoco. For more information about environmental risks, see "Business of
Conoco -- Environmental Regulation" on page 116.

CHANGES IN GOVERNMENT REGULATIONS MAY IMPOSE PRICE CONTROLS AND LIMITATIONS ON
PRODUCTION OF OIL AND GAS

     Conoco's operations are subject to extensive government regulations. From
time to time, regulatory agencies have imposed price controls and limitations on
production by restricting the rate of flow of oil and natural gas wells below
actual production capacity in order to conserve supplies of oil and natural gas.
Because legal requirements are frequently changed and subject to interpretation,
Conoco cannot predict the effect of these requirements.

POTENTIAL YEAR 2000 PROBLEMS MAY ADVERSELY AFFECT CONOCO'S BUSINESS

     Many existing computer programs were designed and developed using only two
digits to represent the year of a date. This failure to consider the upcoming
change in the century could lead to the failure of computer applications or
create erroneous results by or at the year 2000. Failure by Conoco, its business
associates or

                                       21
<PAGE>   22

other constituents, such as governments, to ensure their computer systems are
Year 2000 compliant on a timely basis could have a material adverse effect on
Conoco's financial position and results of operations. For more information
about Year 2000 risks, see "Management's Discussion and Analysis of Financial
Condition and Results of Operations of Conoco -- Year 2000" on page 79.

PROVISIONS IN CONOCO'S BY-LAWS, CERTIFICATE OF INCORPORATION, AND DELAWARE LAW
COULD DETER TAKEOVER ATTEMPTS

     Conoco's certificate of incorporation and by-laws contain a number of
provisions that may discourage, delay or prevent a merger or acquisition of
control of Conoco without the approval of Conoco's board of directors.
Provisions of Delaware law may also discourage, delay or prevent someone from
acquiring or merging with Conoco. For a detailed explanation of these
provisions, see "Description of Conoco Capital Stock -- Anti-Takeover Effects of
Certificate and By-law Provisions."

THERE IS NO PUBLIC MARKET FOR CONOCO CLASS B COMMON STOCK AND AN ACTIVE TRADING
MARKET MAY NOT DEVELOP

     Prior to the exchange offer, there has been no public market for the shares
of Conoco Class B common stock. Although the Conoco Class B common stock has
been approved for listing on the NYSE, an active trading market may not develop.

CONOCO MAY NOT PAY DIVIDENDS ON ITS COMMON STOCK

     Conoco's shareholders may not receive future dividends. The amount of cash
dividends, if any, to be declared and paid will depend upon declaration by
Conoco's board of directors and upon Conoco's financial condition, results of
operations, cash flow, the level of its capital and exploration expenditures,
its future business prospects and other related matters that Conoco's board of
directors deems relevant.

                                       22
<PAGE>   23

                                THE TRANSACTION

BACKGROUND AND PURPOSE

     As part of DuPont's increased focus on its materials and life sciences
businesses, in May 1998 DuPont announced its intention to separate its oil and
gas business, operated by Conoco, from its other businesses.

     In September 1998, following a thorough review of the various alternatives
for divesting its oil and gas business, DuPont's board of directors approved an
initial public offering for Conoco. In October 1998, Conoco completed its
initial public offering, selling to the public 191.5 million shares of Conoco
Class A common stock, representing approximately 30 percent of its total shares
outstanding and approximately eight percent of the total voting power of Conoco.
DuPont, through its ownership of all of the 436.5 million shares of Conoco Class
B common stock, retained approximately 70 percent of the total shares in, and
approximately 92 percent of the total voting power of, Conoco. Holders of Class
A common stock are entitled to one vote per share, while holders of Class B
common stock are entitled to five votes per share.

     DuPont now intends to divest its remaining ownership interest in Conoco
through the exchange offer in which DuPont stockholders that are United States
persons may exchange some or all of their DuPont shares for the remaining Conoco
shares held by DuPont. If fewer than all of the Conoco shares held by DuPont are
distributed because too few DuPont shares are tendered, DuPont may pursue one of
several alternatives, including spinning off, selling or otherwise disposing of
or retaining some of its Conoco shares.

     In a spin-off, DuPont would distribute some or all of its remaining Conoco
shares on a pro rata basis to all of its remaining stockholders. In a secondary
sale, DuPont would sell some or all of the remaining shares in an offering that
would close following the exchange offer. Alternatively, DuPont could retain all
or a portion of these remaining shares for no longer than five years on terms
that would comply with the representations made to the IRS in connection with
obtaining the ruling.

EFFECTS

     If the exchange offer is fully subscribed, DuPont will no longer own any of
the outstanding stock of Conoco. Accordingly, DuPont's balance sheet and income
statement will no longer reflect the assets and operations of Conoco and the
total market capitalization of DuPont will decrease considerably.

     DuPont stockholders will be affected by the exchange offer as follows:

     - holders who tender all of their shares will, if all such shares are
       accepted for exchange, no longer have an ownership interest in DuPont and
       will no longer participate in any change in the value of DuPont;

     - holders who exchange some, but not all, of their shares will have a
       diminished ownership interest in DuPont and an increased ownership
       interest in Conoco; and

     - holders who do not tender any of their shares for exchange under the
       exchange offer will have an increased ownership interest, on a percentage
       basis, in DuPont.

     Persons who remain DuPont stockholders after the exchange offer will own
shares in a company that no longer owns the Conoco oil and gas enterprise.
Conoco operations represented approximately 22 percent of total DuPont earnings
over the last five years.

     DuPont may reissue any shares acquired by it in the exchange offer and
retained in treasury without further stockholder action for general or other
corporate purposes, including stock splits or dividends, acquisitions, raising
additional capital for use in DuPont's business and under DuPont savings plans.
DuPont has no current plan for the issuance of shares received pursuant to the
exchange offer, although it reserves the right to re-issue such shares,
including in the Pioneer transaction.

NO APPRAISAL RIGHTS

     Appraisal is a statutory remedy available to corporate minority
stockholders who object to extraordinary actions taken by their corporation.
This remedy allows dissenting stockholders to require the corporation to
                                       23
<PAGE>   24

repurchase their stock at a price equivalent to its value immediately prior to
the extraordinary corporate action. No appraisal rights are available to
stockholders of DuPont in connection with the exchange offer.

REGULATORY APPROVALS

     No filings under the Hart-Scott-Rodino Antitrust Improvements Act of 1976
are required in connection with the exchange offer generally. If a stockholder
of DuPont decides to participate in the exchange offer and consequently acquires
enough Conoco shares to exceed the $15 million threshold stated in the
regulations under this act, and if an exemption under those regulations does not
apply, the stockholder and DuPont would be required to make filings under this
act. A filing requirement could delay exchanges with that stockholder for
several months or more.

ACCOUNTING TREATMENT

     The DuPont shares received by DuPont in the exchange offer will be recorded
as a decrease in DuPont's stockholders' equity, reflecting the decrease in
DuPont common stock outstanding at the market value of the Conoco shares
distributed as of the expiration date. The exchange offer will result in a net
financial gain to DuPont, after direct expenses of the disposition, and will be
reported as a gain on the disposal of the discontinued business. The gain from
the exchange offer will result from the difference between the market value and
the carrying value of the shares of Conoco Class B common stock distributed.
DuPont shares received by DuPont in connection with the cash offer will be
recorded as a decrease in DuPont's stockholders' equity, reflecting the decrease
in DuPont common stock outstanding at the cash amount paid for DuPont common
stock. The cash offer will not result in a gain or loss to DuPont.

     In the event DuPont sells any Conoco Class B common stock, the gain on the
sale will be the difference between sale proceeds and DuPont's basis in the
shares sold, net of applicable expenses and taxes.

     Any shares of Conoco Class B common stock that are distributed through a
possible spin-off will be accounted for as a dividend through a direct charge to
reinvested earnings. The amount of the dividend will be equal to DuPont's
carrying value of the shares of Conoco Class B common stock distributed. In
addition, reinvested earnings will also be charged for taxes paid, if any, on
the value of Conoco shares distributed in a spin-off to holders of DuPont common
stock that are not United States persons.

     DuPont's disposition of Conoco shares will not in and of itself affect the
financial position or results of operations of Conoco.

                                       24
<PAGE>   25

                               THE EXCHANGE OFFER

TERMS OF THE EXCHANGE OFFER

     DuPont is offering to exchange 2.95 shares of Conoco Class B common stock
for each share of DuPont common stock held by a United States person that is
validly tendered on the terms and subject to the conditions described below by
12:00 Midnight, New York City time, on Friday, August 6, 1999. DuPont may extend
this deadline under specified circumstances. The last day on which tenders will
be accepted, whether on August 6, 1999 or any later date to which the exchange
offer may be extended, is referred to as the expiration date. DuPont
stockholders may tender all, some or none of their shares.

     The exchange offer is available only to United States persons. You are a
United States person if you are:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any State within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

     You are urged to consult your tax advisor regarding your status as a United
States person to determine your eligibility to participate in the exchange
offer. DuPont reserves the right to exclude from the category of United States
persons individuals who have addresses in foreign jurisdictions where delivery
of the exchange offer may be prohibited by law. If you are not a United States
person, a substantially concurrent cash offer in which you can sell your DuPont
shares for cash is being made available to you. The cash offer is being made
only to non-United States persons. For more information regarding the cash
offer, you should contact D.F. King or your broker.

     If you are a participant in an eligible DuPont or DuPont affiliated company
savings plan including an eligible Conoco savings plan, or have a Blueprint
account at Merrill Lynch, you may have an earlier cut-off date to decide to
tender your DuPont shares in order to allow the trustees, plan administrators or
Merrill Lynch sufficient time to process all the instructions and submit them to
the exchange agent prior to the exchange offer expiration. Please carefully
review the instructions being sent to you from the trustees or administrators of
the plans or Merrill Lynch to determine the cut-off date.

     DuPont will accept up to 147,980,872 shares of DuPont common stock for
exchange. This number of shares multiplied by the exchange ratio equals the
436,543,573 shares of Conoco Class B common stock held by DuPont. If more than
147,980,872 DuPont shares are validly tendered, the tendered shares will be
subject to proration when the exchange offer expires. DuPont's obligation to
complete the exchange offer is subject to important conditions that are
described under the heading "Conditions for Completion of the Exchange Offer" on
page 31.

     In determining the exchange ratio, DuPont considered, among other things:

     - recent market prices on the NYSE for DuPont shares and Conoco Class A
       common stock; and

     - advice from the dealer manager as to what exchange ratio might attract
       enough DuPont stockholders to participate in the exchange offer.

     DuPont is sending this document and related documents to persons believed
to be United States persons who held DuPont common stock on or about July 6,
1999. On that date, there were approximately 1,129 million shares of DuPont
common stock outstanding, which were held of record by approximately 142,000
stockholders.

                                       25
<PAGE>   26

DuPont is also sending this document to persons eligible to participate in the
DuPont or DuPont affiliated company savings plans listed on page 28. DuPont will
also furnish this document and related documents to brokers, banks and similar
persons whose names or the names of whose nominees appear on DuPont's
stockholder list or, if applicable, who are listed as participants in a clearing
agency's security position listing for subsequent transmittal to beneficial
owners of shares of DuPont common stock that are United States persons.

PRORATION; TENDERS FOR EXCHANGE BY HOLDERS OF FEWER THAN 100 SHARES OF DUPONT
COMMON STOCK

     If on the expiration date, DuPont stockholders have validly tendered more
than 147,980,872 DuPont shares so that more than 436,543,573 shares of Conoco
Class B common stock would be exchanged, DuPont will accept on a pro rata basis
all shares properly tendered and not withdrawn, except as described in this
section.

     Except as otherwise provided in this paragraph, holders of an aggregate of
less than 100 DuPont shares who validly tender ALL of their shares will not be
subject to proration if the exchange offer is oversubscribed. DuPont shares held
in a DuPont or DuPont affiliated company savings plan, including Conoco plans,
are not eligible for this preference. However, DuPont shares held by United
States persons in a Blueprint account at Merrill Lynch are eligible for this
preferential treatment. Beneficial holders of 100 or more DuPont shares are not
eligible for this preference, even if such holders have separate stock
certificates or accounts representing fewer than 100 DuPont shares.

     Any holder of less than 100 DuPont shares who wishes to tender all of these
shares must complete the box captioned "Odd-Lot Shares" on the letter of
transmittal and, if applicable, on the notice of guaranteed delivery. If your
odd-lot shares are held by a broker or Merrill Lynch for your account, you can
contact them and request the preferential treatment.

     DuPont will announce preliminary results of the exchange offer by press
release promptly after the expiration date. Because of the difficulty in
determining the number of DuPont shares validly tendered for exchange, DuPont
expects that the final results, including proration, if any, will not be
determined until approximately seven business days after the expiration date.

FRACTIONAL SHARES

     Holders who are United States persons, including participants in eligible
DuPont or DuPont affiliated company savings plans, including eligible Conoco
savings plans, may tender fractional DuPont shares in the exchange offer. Any
fractional shares of DuPont common stock or of Conoco Class B common stock
resulting from the exchange of DuPont shares will be distributed to holders by
book-entry transfer. See " -- Book Entry Accounts," on page 30.

EXCHANGE OF SHARES OF DUPONT COMMON STOCK

     If all of the conditions of the exchange offer are met, DuPont will
exchange shares of Conoco Class B common stock for each properly tendered DuPont
share that was not properly withdrawn or deemed withdrawn prior to the
expiration date, except as described in "-- Proration; Tenders for Exchange by
Holders of Fewer than 100 Shares of DuPont Common Stock" on page 26 and
"Extension of Tender Period; Termination; Amendment" on page 31. DuPont may,
subject to the rules under the Securities Exchange Act, delay accepting or
exchanging any DuPont shares in order to comply in whole or in part with any
applicable law. For a description of DuPont's right to delay, terminate or amend
the exchange offer, see "-- Extension of Tender Period; Termination; Amendment"
on page 31.

     If DuPont notifies the exchange agent either orally or in writing that it
has accepted the tenders of DuPont shares for exchange, the exchange of these
shares will be complete. Promptly following the announcement by DuPont of any
final proration factor, the exchange agent will deliver the tendered DuPont
shares to DuPont. Simultaneously, the exchange agent, as agent for the tendering
stockholders, will receive from DuPont, the shares of Conoco Class B common
stock that correspond to the number of DuPont shares tendered. The exchange
agent will then credit such shares to book-entry accounts maintained by the
transfer agent for the benefit of the holders.

                                       26
<PAGE>   27

     If any tendered DuPont shares are not exchanged for any reason, or if fewer
shares are exchanged due to proration, these unexchanged or untendered DuPont
shares will be credited to book-entry accounts for the shares maintained by the
transfer agent for the benefit of the holders.

     Holders who tender their DuPont shares for exchange will generally not be
obligated to pay any transfer tax in connection with the exchange offer, except
in the circumstances described under "Stock Transfer Taxes" on Page 15 of the
letter of transmittal. DuPont will not pay interest under the exchange offer,
regardless of any delay in making the exchange or crediting or delivering
shares.

PROCEDURES FOR TENDERING DUPONT SHARES

     To tender your DuPont shares, you must complete the following procedures
before the expiration date:

     IF YOU HAVE STOCK CERTIFICATES FOR YOUR DUPONT SHARES, you should send to
the exchange agent by registered mail, return receipt requested, the following
documents:

     - a completed and executed letter of transmittal indicating the number of
       shares to be tendered and any other documents required by the letter of
       transmittal, and

     - the actual certificates representing the DuPont shares.

The exchange agent's address is listed on the back cover of this document. The
certificate must be endorsed or accompanied by an appropriate stock power if:

     - a certificate representing DuPont shares is registered in the name of a
       person other than the signer of a letter of transmittal;

     - delivery of shares of Conoco Class B common stock is to be made to
       Conoco's transfer agent on behalf of a person other than the registered
       owner; or

     - DuPont shares not accepted for exchange are to be delivered to DuPont's
       transfer agent on behalf of a person other than the registered owner.

     The signature on the letter of transmittal must be guaranteed by an
eligible institution unless the DuPont shares tendered under the letter of
transmittal are tendered (a) by the registered holder of the DuPont shares
tendered and such holder has not completed the box entitled "Special Issuance
Instructions" in Section II of the letter of transmittal or (b) for the account
of an eligible institution. An eligible institution is a member of a registered
national securities exchange or a member of the National Association of
Securities Dealers, Inc. or a commercial bank or trust company having an office
or a correspondent in the United States. Most banks and financial institutions
are eligible institutions.

     IF YOU HOLD YOUR DUPONT SHARES THROUGH A BROKER, you should follow the
instructions sent to you separately by your broker. You should not use the
letter of transmittal to direct the tender of your DuPont shares. Your broker
must notify The Depository Trust Company and cause it to transfer the shares
into the exchange agent's account in accordance with The Depository Trust
Company's procedures. The broker must also ensure that the exchange agent
receives an agent's message from The Depository Trust Company confirming the
book-entry transfer of your DuPont shares. An agent's message is a message,
transmitted by The Depository Trust Company and received by the exchange agent,
that forms a part of a book-entry confirmation, which states that The Depository
Trust Company has received an express acknowledgment from the participant in The
Depository Trust Company tendering the shares that such participant has received
and agrees to be bound by the terms of the letter of transmittal.

     IF YOU ARE AN INSTITUTION WHICH IS A PARTICIPANT IN THE DEPOSITORY TRUST
COMPANY'S BOOK-ENTRY TRANSFER FACILITY, you should follow the same procedures
that are applicable to persons holding shares through a broker as described
above.

     IF YOU HOLD YOUR DUPONT SHARES AS A PARTICIPANT IN DUPONT'S DIVIDEND
REINVESTMENT PLAN, you may tender some or all of the DuPont shares attributable
to your plan account in the same manner described above.

                                       27
<PAGE>   28

     IF YOU HOLD YOUR DUPONT SHARES AS A PARTICIPANT IN A DUPONT OR A DUPONT
AFFILIATED COMPANY SAVINGS PLAN BASED IN THE UNITED STATES, INCLUDING CONOCO
SAVINGS PLANS BASED IN THE UNITED STATES, OR YOU ARE A UNITED STATES PERSON AND
HOLD YOUR SHARES IN A BLUEPRINT BROKERAGE ACCOUNT AT MERRILL LYNCH, you should
follow the instructions sent to you separately by the plan trustees,
administrator of the plan or Merrill Lynch. You should not use the letter of
transmittal to direct the tender of your DuPont shares.

     The DuPont or DuPont affiliated company savings plans eligible to
participate in the exchange offer are:

<TABLE>
    <S>                                             <C>
    DuPont Flooring Systems 401(k) Saving Plan      Protein Technology International Inc.
    DuPont Photomasks, Inc. 401(k)                  Savings
      Retirement Plan                               Investment Plan
    DuPont Savings and Investment Plan              Qualicon Retirement and Savings Plan
    Optimum Quality Grains, L.L.C. Retirement       Thrift Plan for Employees of Conoco Inc.
      and Savings Plan                              Thrift Plan for Retail Employees of Conoco
                                                    Inc.
                                                    Thrift Plan for Employees of Sentinel
                                                    Transportation Company
</TABLE>

     Also, employees of DuPont and its affiliates who are United States persons
and who hold DuPont shares received as variable compensation or upon the
exercise of stock options in a Blueprint brokerage account are eligible to
participate in the exchange offer.

     Holders of vested but unexercised options to purchase DuPont common stock
who are United States persons may exercise these options in accordance with the
terms of the stock option plans of DuPont and tender the DuPont shares received
upon such exercise under the general instructions for tendering shares discussed
above.

     In addition, holders of vested but unexercised "incentive stock options" as
defined in Section 422 of the Internal Revenue Code, as amended, to purchase
DuPont common stock who are United States persons may exercise these options in
accordance with the terms of the stock option plans of DuPont and tender the
DuPont shares received upon such exercise under the general instructions for
tendering shares discussed above. Holders of shares of DuPont common stock that
were acquired upon the exercise of an incentive stock option generally will not
be taxed at the time of tender of such shares, but rather will be taxed at the
time of the disposition of the shares of Conoco Class B common stock that were
acquired in exchange for such shares of DuPont common stock.

     Restricted stock granted under DuPont's Stock Performance Plan or acquired
in connection with a stock option exercise resulting in the grant of reload
options is not eligible for tender into the exchange offer.

     Trustees, executors, administrators, guardians, attorneys-in-fact, officers
of corporations or others acting in a fiduciary or representative capacity who
sign the letter of transmittal, notice of guaranteed delivery or any
certificates or stock powers must indicate the capacity in which they are
signing, and must submit evidence of their power to act in that capacity unless
waived by DuPont.

     If you validly tender your DuPont shares and the shares are accepted by
DuPont, there will be a binding agreement between you and DuPont on the terms
and subject to the conditions set forth in this document and in the accompanying
letter of transmittal. A person who tenders DuPont shares for his own account
violates federal securities law unless the person owns:

     - DuPont shares;

     - other securities convertible into or exchangeable for such DuPont shares;
or

     - an option, warrant or right to purchase such DuPont shares and intends to
       acquire DuPont shares for tender by conversion or exchange of such
       securities or by exercise of such option, warrant or right.

Federal securities law provides a similar restriction applicable to the tender
or guarantee of a tender on behalf of another person.

     DO NOT SEND LETTERS OF TRANSMITTAL AND CERTIFICATES FOR DUPONT SHARES TO
DUPONT, CONOCO, MORGAN STANLEY, D.F. KING OR ANY SOLICITING DEALER.

                                       28
<PAGE>   29

     IT IS UP TO YOU TO DECIDE HOW TO DELIVER YOUR DUPONT SHARES AND ALL OTHER
REQUIRED DOCUMENTS. IT IS YOUR RESPONSIBILITY THAT ALL NECESSARY MATERIALS GET
TO THE EXCHANGE AGENT PRIOR TO THE EXPIRATION DATE. IF THE EXCHANGE AGENT DOES
NOT RECEIVE ALL OF THE MATERIALS REQUIRED BY THIS SECTION BEFORE THE EXPIRATION
DATE, YOUR SHARES WILL NOT BE VALIDLY TENDERED.

DUPONT'S INTERPRETATIONS ARE BINDING

     DuPont will determine at its own discretion all questions as to the form of
documents, including notices of withdrawal, and the validity, form, eligibility,
including time of receipt, and acceptance for exchange of any tender of DuPont
shares. This determination will be final and binding on all tendering
stockholders. DuPont reserves the absolute right to:

     - determine whether a tendering stockholder is a United States person;

     - reject any and all tenders of any DuPont shares not properly tendered;

     - waive any defects or irregularities in the tender of DuPont shares or any
       conditions of the exchange offer either before or after the expiration
       date; and

     - request any additional information from any record or beneficial owner of
       DuPont shares that DuPont deems necessary, including information with
       respect to the status as a United States person of any such person or any
       of its partners, shareholders, beneficiaries, principals or participants.

     None of DuPont, Conoco, First Chicago Trust Company of New York, Morgan
Stanley, D.F. King, the soliciting dealers and any other person will be under
any duty to notify tendering stockholders of any defect or irregularity in
tenders or notices of withdrawal.

LOST OR DESTROYED CERTIFICATES

     If your certificate representing DuPont shares has been mutilated,
destroyed, lost or stolen and you wish to tender your shares, please call the
First Chicago Trust Company of New York at 1-888-983-8766. You will receive an
affidavit to complete, and you will be informed of the amount needed to pay for
a surety bond for your lost shares. Upon receipt of the completed affidavit and
surety bond payment and the completed letter of transmittal, your shares will be
included in the exchange offer. If you wish to participate in the exchange
offer, you will need to act quickly to ensure that the lost certificates can be
replaced and delivered to the exchange agent prior to expiration of the exchange
offer.

GUARANTEED DELIVERY PROCEDURE

     If you wish to tender your DuPont shares but the shares are not immediately
available, or time will not permit the shares or other required documentation to
reach the exchange agent before the expiration date, or the procedure for
book-entry transfer cannot be completed on a timely basis, you may still tender
your DuPont shares if:

     - the tender is made through an eligible institution;

     - the exchange agent receives from the eligible institution before the
       expiration date, a properly completed and duly executed notice of
       guaranteed delivery, substantially in the form provided by DuPont; and

     - the exchange agent receives the certificates for all physically tendered
       DuPont shares, in proper form for transfer, or a book-entry confirmation,
       as the case may be, and a properly completed letter of transmittal, or a
       facsimile of a letter of transmittal and all other documents required by
       the letter of transmittal, within three NYSE trading days after the date
       of execution of the notice of guaranteed delivery.

     You may deliver the notice of guaranteed delivery by hand, telegram,
facsimile transmission or mail to the exchange agent and you must include a
guarantee by an eligible institution in the form set forth in the notice.

                                       29
<PAGE>   30

WITHDRAWAL RIGHTS

     You may withdraw tenders of DuPont shares at any time prior to the
expiration date and, unless DuPont has accepted your tender as provided in this
document, after the expiration of 40 business days from the commencement of the
exchange offer. If DuPont:

     - delays its acceptance of DuPont shares for exchange;

     - extends the exchange offer; or

     - is unable to accept DuPont shares for exchange under the exchange offer
for any reason,

then, without prejudice to DuPont's rights under the exchange offer, the
exchange agent may, on behalf of DuPont, retain DuPont shares tendered, and such
DuPont shares may not be withdrawn except as otherwise provided in this
document, subject to provisions under the Securities Exchange Act that provide
that an issuer making an exchange offer shall either pay the consideration
offered or return tendered securities promptly after the termination or
withdrawal of the exchange offer.

     For a withdrawal to be effective, a written notice of withdrawal must be
received by the exchange agent at one of its addresses set forth on the back
cover of this document. The notice of withdrawal must:

     - specify the name of the person having tendered the DuPont shares to be
       withdrawn;

     - identify the number of DuPont shares to be withdrawn; and

     - specify the name in which physical DuPont share certificates are
       registered, if different from that of the withdrawing holder.

     If certificates for the DuPont shares have been delivered or otherwise
identified to the exchange agent, then, before the release of such certificates,
the withdrawing holder must also submit the serial numbers of the particular
certificates to be withdrawn, and a signed notice of withdrawal with signatures
guaranteed by an eligible institution unless such holder is an eligible
institution.

     If the DuPont shares have been tendered pursuant to the procedure for
book-entry transfer, any notice of withdrawal must specify the name and number
of the account at The Depository Trust Company to be credited with the withdrawn
shares and otherwise comply with the procedures of such facility.

     Any DuPont shares withdrawn will be deemed not to have been validly
tendered for exchange for purposes of the exchange offer. Properly withdrawn
shares may be retendered by following one of the procedures described under
"-- Procedures for Tendering DuPont Shares" at any time on or before the
expiration date.

     Except as otherwise provided above, any tender of DuPont shares made under
the exchange offer is irrevocable.

BOOK-ENTRY ACCOUNTS

     Physical certificates representing shares of Conoco Class B common stock or
DuPont common stock will not be issued as a result of the exchange offer. Rather
than issuing physical certificates for either DuPont shares returned due to
proration or shares of Conoco Class B common stock, the exchange agent will
credit such shares to book-entry accounts maintained by the transfer agent for
the benefit of the respective holders. This method of holding stock eliminates
the need for actual stock certificates to be issued, facilitates the holding of
fractional shares, and eliminates the requirements for physical movement of
stock certificates at the time of sale. Promptly following the crediting of
shares to your respective book-entry accounts, you will receive a Stock
Distribution Statement from the exchange agent evidencing your holdings, as well
as general information on the book-entry form of ownership.

     You are not required to maintain a book-entry account and you may obtain a
stock certificate for all or a portion of your DuPont or Conoco shares received
as part of the exchange offer at no cost to you. Instructions describing how you
can obtain stock certificates will be included with the Stock Distribution
Statement mailed

                                       30
<PAGE>   31

to you. However, stock certificates for fractional shares will not be issued by
either DuPont or Conoco. If you request stock certificates and you hold
fractional shares, any fractional shares will be sold for your account by the
transfer agent, which will then deliver to you a certificate for the whole
number of shares you own and the proceeds from the sale of the fractional
shares.

EXTENSION OF TENDER PERIOD; TERMINATION; AMENDMENT

     DuPont expressly reserves the right, in its discretion, for any reason,
including the non-satisfaction of any of the conditions for completion set forth
below, to extend the period of time during which the exchange offer is open or
to amend the exchange offer in any respect, including changing the exchange
ratio. DuPont also expressly reserves the right to extend the period of time
during which the exchange offer is open in the event the exchange offer is
undersubscribed, that is, fewer than 147,980,872 DuPont shares are tendered. In
any of these cases, DuPont will make a public announcement of the extension or
amendment.

     If DuPont materially changes the terms of or information concerning the
exchange offer, DuPont will extend the exchange offer. The SEC has stated that,
as a general rule, it believes that an offer should remain open for a minimum of
five business days from the date that notice of the material change is first
given. The length of time will depend on the particular facts and circumstances.
Subject to the preceding paragraph, the exchange offer will be extended so that
it remains open for a minimum of ten business days following the announcement
if:

     - DuPont increases or decreases the number of Conoco shares offered in
       exchange for each DuPont share, the number of DuPont shares eligible for
       exchange, the minimum condition, or the dealer manager or solicitation
       fee, and

     - the exchange offer is scheduled to expire within ten business days of
       announcing an increase or decrease.

     If any of the conditions indicated in the next section have not been met,
DuPont reserves the right, in its sole discretion, so long as DuPont shares have
not been accepted for exchange, to delay acceptance for exchange of or exchange
for any DuPont shares or to terminate the exchange offer and not accept for
exchange any DuPont shares.

     If DuPont extends the exchange offer, is delayed in accepting any DuPont
shares or is unable to accept for exchange any DuPont shares under the exchange
offer for any reason, then, without affecting DuPont's rights under the exchange
offer, the exchange agent may, on behalf of DuPont, retain all DuPont shares
tendered. These DuPont shares may not be withdrawn except as provided in
"-- Withdrawal Rights" above. DuPont's reservation of the right to delay
acceptance of any DuPont shares is subject to applicable law, which requires
that DuPont pay the consideration offered or return the DuPont shares deposited
promptly after the termination or withdrawal of the exchange offer.

     DuPont will issue a press release or other public announcement no later
than 9:00 a.m., New York City time, on the next business day following any
extension, amendment, non-acceptance or termination of the previously scheduled
expiration date.

CONDITIONS FOR COMPLETION OF THE EXCHANGE OFFER

     DuPont will not complete the exchange offer unless at least 73,990,436
DuPont shares are validly tendered and not withdrawn. This number of shares,
referred to as the "minimum condition," represents approximately 6.6 percent of
the outstanding DuPont shares as of June 30, 1999 and is enough shares to ensure
that at least 50 percent of the shares of Conoco Class B common stock owned by
DuPont are exchanged under the exchange offer.

     DuPont may also not accept shares for exchange and may terminate or not
complete the exchange offer if:

     - any action, proceeding or litigation seeking to enjoin, make illegal or
       delay completion of the exchange offer or otherwise relating in any
       manner to the exchange offer is instituted or threatened;

                                       31
<PAGE>   32

     - any order, stay, judgment or decree is issued by any court, government,
       governmental authority or other regulatory or administrative authority
       and is in effect, or any statute, rule, regulation, governmental order or
       injunction shall have been proposed, enacted, enforced or deemed
       applicable to the exchange offer, any of which would or might restrain,
       prohibit or delay completion of the exchange offer or impair the
       contemplated benefits of the exchange offer to DuPont or Conoco;

     - the IRS notifies DuPont that the ruling has been withdrawn or invalidated
       in whole or in part or the DuPont board of directors determines that any
       of the representations and assumptions underlying the ruling or any
       portion of it is not true and correct in all respects.

     - any of the following occurs and the adverse effect of such occurrence
       shall, in the reasonable judgment of DuPont, be continuing:

        -- any general suspension of trading in, or limitation on prices for,
           securities on any national securities exchange or in the
           over-the-counter market in the United States,

        -- any extraordinary or material adverse change in U.S. financial
           markets generally, including, without limitation, a decline of at
           least twenty percent in either the Dow Jones Average of Industrial
           stocks or the Standard & Poor's 500 Index from July 8, 1999,

        -- a declaration of a banking moratorium or any suspension of payments
           in respect of banks in the United States,

        -- any limitation, whether or not mandatory, by any governmental entity
           on, or any other event that would reasonably be expected to
           materially adversely affect, the extension of credit by banks or
           other lending institutions,

        -- a commencement of a war or other national or international calamity
           directly or indirectly involving the United States, which would
           reasonably be expected to affect materially and adversely, or to
           delay materially, the completion of the exchange offer, or

        -- if any of the situations above exist at the time of commencement of
           the exchange offer, the situation deteriorates materially;

     - any tender or exchange offer, other than this exchange offer and the
       related cash offer by DuPont, with respect to some or all of the
       outstanding Conoco common stock or DuPont common stock or any merger,
       acquisition or other business combination proposal involving DuPont or
       Conoco, shall have been proposed, announced or made by any person or
       entity;

     - any event or events occur that have resulted or may result, in DuPont's
       judgment, in an actual or threatened change in the business condition,
       income, operations, stock ownership or prospects of DuPont and its
       subsidiaries, taken as a whole, or of Conoco and its subsidiaries, taken
       as a whole; or

     - as the term "group" is used in Section 13(d)(3) of the Securities
       Exchange Act,

        -- any person, entity or group acquires more than five percent of the
           outstanding shares of DuPont common stock or Conoco common stock,
           other than a person, entity or group which had publicly disclosed
           such ownership with the SEC prior to July 8, 1999,

        -- any such person, entity or group which had publicly disclosed such
           ownership prior to such date shall acquire additional DuPont common
           stock or Conoco common stock constituting more than two percent of
           the outstanding DuPont shares or Conoco common stock, or

        -- any new group shall have been formed that beneficially owns more than
           five percent of the outstanding shares of DuPont common stock or
           Conoco common stock which in the judgment of DuPont in any such case,
           and regardless of the circumstances, makes it inadvisable to proceed
           with the exchange offer or with such acceptance for exchange of
           shares.

                                       32
<PAGE>   33

     If any of the above events occur, DuPont may:

     - terminate the exchange offer and as promptly as practicable return all
       tendered DuPont shares to tendering stockholders;

     - extend the exchange offer and, subject to the withdrawal rights described
       in "-- Withdrawal Rights" on page 30, retain all tendered DuPont shares
       until the extended exchange offer expires;

     - amend the terms of the exchange offer; or

     - waive the unsatisfied condition and, subject to any requirement to extend
       the period of time during which the exchange offer is open, complete the
       exchange offer.

     These conditions are for the sole benefit of DuPont. DuPont may assert
these conditions with respect to all or any portion of the exchange offer
regardless of the circumstances giving rise to them. DuPont may waive any
condition in whole or in part at any time in its discretion. DuPont's failure to
exercise its rights under any of the above conditions does not represent a
waiver of these rights. Each right is an ongoing right which may be asserted at
any time. Any determination by DuPont concerning the conditions described above
will be final and binding upon all parties.

     If a stop order issued by the SEC is in effect with respect to the
registration statement of which this document is a part, DuPont will not accept
any DuPont shares tendered and will not exchange Conoco shares for any DuPont
shares.

FEES AND EXPENSES

     Morgan Stanley is acting as the dealer manager in connection with the
exchange offer. Morgan Stanley will receive a fee of $1,500,000 for its services
as dealer manager, in addition to being reimbursed by DuPont for its
out-of-pocket expenses, including attorneys' fees, in connection with the
exchange offer. Morgan Stanley is also acting as DuPont's financial advisor in
connection with the separation of Conoco from DuPont, for which Morgan Stanley
is receiving customary compensation. The foregoing fees will be payable if and
when the exchange offer is completed. Morgan Stanley has provided investment
banking services to DuPont and Conoco in the past, including acting as the lead
manager of the Conoco initial public offering, for which Morgan Stanley received
customary compensation.

     DuPont and Conoco have each agreed to indemnify Morgan Stanley against
specified liabilities related to this transaction, including civil liabilities
under the federal securities laws, and to contribute to payments which Morgan
Stanley may be required to make in respect thereof. However, in the opinion of
the SEC, such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. Morgan Stanley may from time to
time hold DuPont shares in its proprietary accounts, and to the extent it owns
shares in these accounts at the time of the exchange offer, Morgan Stanley may
tender these shares.

     DuPont will pay each soliciting dealer a solicitation fee of $0.75 per
share, for up to 1,000 shares per tendering stockholder, for each DuPont share
tendered and accepted for exchange under the exchange offer if that soliciting
dealer has affirmatively solicited and obtained the tender. DuPont will not pay
a solicitation fee in connection with a tender of DuPont common stock by a
stockholder who tenders:

     - more than 10,000 DuPont shares; or

     - from a country outside of the United States.

"Soliciting dealer" includes the following organizations:

     - any broker or dealer in securities that is a member of any national
       securities exchange in the United States or of the National Association
       of Securities Dealers, Inc., or

     - any bank or trust company located in the United States.

     In order for a soliciting dealer to receive a solicitation fee with respect
to the tender of shares of DuPont common stock, the exchange agent must have
received by three NYSE trading days after the expiration date, a

                                       33
<PAGE>   34

properly completed and duly executed "Notice of Solicited Tenders". If a "Notice
of Solicited Tenders" is not received by the exchange agent by three NYSE
trading days after the expiration date, no solicitation fee will be paid to such
soliciting dealer.

     Under no circumstances shall a fee be paid to a soliciting dealer more than
once with respect to any DuPont shares. No soliciting dealer is required to make
a recommendation to holders of DuPont shares as to whether to tender or refrain
from tendering in the exchange offer.

     Soliciting dealers should take care to ensure proper record-keeping to
document their entitlement to any solicitation fee. DuPont and the exchange
agent reserve the right to require additional information, as deemed warranted.

     All questions as to the validity, form, and eligibility, including time of
receipt of notices of solicited tenders will be determined by the exchange agent
and DuPont, in their discretion, which determination will be final and binding.
Neither the exchange agent nor any other person will be under any duty to give
notification of any defects or irregularities in a notice of solicited tender or
incur any liability for failure to give such notification.

     DuPont will not pay a solicitation fee to a soliciting dealer who for any
reason must transfer the fee to a tendering holder. Soliciting dealers are not
entitled to a solicitation fee with respect to DuPont shares beneficially owned
by them or with respect to any shares that are registered in the name of a
soliciting dealer unless the shares are held by such soliciting dealer as
nominee and are tendered for the benefit of beneficial holders. No broker,
dealer, bank, trust company or fiduciary shall be deemed to be the agent of
DuPont, Conoco, First Chicago Trust Company of New York, Morgan Stanley or D.F.
King for purposes of the exchange offer.

     DuPont has retained D.F. King to act as the information agent and the First
Chicago Trust Company of New York to act as the exchange agent in connection
with the exchange offer. The information agent may contact holders of DuPont
shares by mail, telephone, facsimile transmission and personal interviews and
may request brokers, dealers and other nominee stockholders to forward materials
relating to the exchange offer to beneficial owners. The information agent and
the exchange agent each will receive reasonable compensation for their
respective services, will be reimbursed for reasonable out-of-pocket expenses
and will be indemnified against liabilities in connection with their services,
including liabilities under the federal securities laws.

     Neither the information agent nor the exchange agent has been retained to
make solicitations or recommendations. The fees they receive will not be based
on the number of DuPont shares tendered under the exchange offer; however, the
exchange agent will be compensated in part on the basis of the number of letters
of transmittal received and the number of stock distribution statements
distributed.

     DuPont will not pay any fees or commissions to any broker or dealer or any
other person, other than Morgan Stanley and the soliciting dealers, for
soliciting tenders of DuPont shares under the exchange offer. Brokers, dealers,
commercial banks and trust companies will, upon request, be reimbursed by DuPont
for reasonable and necessary costs and expenses incurred by them in forwarding
materials to their customers.

LEGAL LIMITATION

     This document is not an offer to sell and it is not soliciting any offer to
buy any Conoco common stock in any jurisdiction in which, except as provided
below, the offer or sale is not permitted. DuPont is not aware of any United
States jurisdiction where the making of the exchange offer or its acceptance
would not be legal. If DuPont learns of any jurisdiction where making the
exchange offer or its acceptance would not be permitted, DuPont currently
intends to make a good faith effort to comply with the relevant law. If, after
such good faith effort, DuPont cannot comply with such law, DuPont will
determine whether the exchange offer will be made to, and whether tenders will
be accepted from or on behalf of, United States persons who are holders of
shares of DuPont common stock residing in the jurisdiction.

     In any jurisdiction where the securities or blue sky laws require the
exchange offer to be made by a licensed broker or dealer, the exchange offer may
be made on DuPont's behalf by one or more registered brokers or dealers licensed
under the laws of such jurisdiction.

                                       34
<PAGE>   35

                PRICE RANGE OF DUPONT COMMON STOCK AND DIVIDENDS

     DuPont Common Stock is listed and traded on the NYSE under the symbol "DD."
The following table contains, for the periods indicated, the high and low sale
prices per share of DuPont common stock as reported on the NYSE composite tape
and the cash dividends paid per share of DuPont common stock:

<TABLE>
<CAPTION>
                                                                                  CASH
                                                            HIGH      LOW       DIVIDENDS
                                                            ----      ---       ---------
<S>                                                         <C>       <C>       <C>
1997
  First Quarter(1)........................................  $ 57 5/8  $ 46 3/8   $0.285
  Second Quarter(1).......................................    62 7/8    49 3/4    0.315
  Third Quarter...........................................    69 3/4    60 11/16   0.315
  Fourth Quarter..........................................    64 15/16   50 3/16   0.315
1998
  First Quarter...........................................  $ 70 7/16 $ 52 5/8   $0.315
  Second Quarter..........................................    84 7/16   67 1/8    0.350
  Third Quarter...........................................    79 1/2    52 1/4    0.350
  Fourth Quarter..........................................    66 1/2    51 11/16   0.350
1999
  First Quarter...........................................  $ 60 1/8  $ 50 1/16  $0.350
  Second Quarter..........................................    75 3/16   57 3/16   0.350
  Third Quarter (through July 8, 1999)....................    71 1/4    68 3/8         (2)
</TABLE>

- ------------
(1) Restated to reflect a two-for-one split of DuPont common stock effective May
    15, 1997.

(2) DuPont and Conoco's third quarter dividends have not yet been declared. It
    is expected that DuPont and Conoco will have the same record date for their
    third quarter dividends. If the record date is prior to or on the expiration
    date of the exchange offer, persons tendering DuPont shares in the exchange
    offer will receive the DuPont dividend with respect to the tendered shares,
    and will not receive the Conoco dividend with respect to any Conoco Class B
    common stock received in the exchange offer. If the dividend record date is
    after the expiration date of the exchange offer, persons tendering DuPont
    shares in the exchange offer will receive the Conoco dividend for the Conoco
    Class B common stock received in the exchange offer, and the DuPont dividend
    for any DuPont shares returned due to proration.

     The number of holders of record of DuPont common stock as of June 30, 1999
was 142,240.

     On March 19, 1999, the last full day of trading prior to the initial filing
of the registration statement, the closing price per DuPont share as reported on
the NYSE composite tape was $56 5/8. On July 8, 1999, the second to last full
day of trading prior to commencement of the exchange offer, the closing price
per DuPont share as reported on the NYSE was $68 5/8. You should obtain current
market quotations for the shares of DuPont common stock before deciding to
tender. No assurance can be given concerning the market price of DuPont common
stock in the future.

     Stockholders who exchange shares of DuPont common stock under this exchange
offer will not be entitled to any dividends on such shares. DuPont stockholders
will continue to receive the regular quarterly dividend with respect to shares
of DuPont common stock that are not exchanged under the exchange offer.

     The board of directors of DuPont may declare dividends on DuPont common
stock after considering many factors, including DuPont's competitive position,
available cash, financial conditions, earnings and capital requirements. DuPont
may choose not to pay dividends in the future.

                                       35
<PAGE>   36

            PRICE RANGE OF CONOCO CLASS A COMMON STOCK AND DIVIDENDS

     The Conoco Class B common stock has been approved for listing on the NYSE
under the symbol "COC.B." Conoco Class A common stock is currently listed and
traded on the NYSE under the symbol "COC." Upon the closing of the exchange
offer, the symbol for Conoco Class A common stock will be changed to "COC.A."
Class A common stock began trading on October 22, 1998 following the Conoco
initial public offering. The following table contains, for the periods
indicated, the high and low sale prices per share of Conoco Class A common stock
as reported on the NYSE composite tape and the cash dividends per share of
Conoco Class A common stock:

<TABLE>
<CAPTION>
                                                                               CASH
                                                              HIGH    LOW    DIVIDENDS
                                                              ----    ---    ---------
<S>                                                           <C>     <C>    <C>
1998
  Fourth Quarter (from October 22 through December 31,
     1998)..................................................  $25 3/4 $19 3/8   $  --
1999
  First Quarter.............................................  $25 7/16 $19 3/8   $0.14(1)
  Second Quarter............................................   31 1/4  22 15/16    0.19
  Third Quarter (through July 8, 1999)......................   27 7/8  26 9/16        (2)
</TABLE>

- ------------
(1) The initial dividend was determined on a pro rata basis covering the period
    from October 27, 1998, the closing date of the Conoco initial public
    offering, to December 31, 1998, and is equivalent to $0.19 per share for a
    full quarter.

(2) DuPont and Conoco's third quarter dividends have not yet been declared. It
    is expected that DuPont and Conoco will have the same record date for their
    third quarter dividends. If the record date is prior to or on the expiration
    date of the exchange offer, persons tendering DuPont shares in the exchange
    offer will receive the DuPont dividend with respect to the tendered shares,
    and will not receive the Conoco dividend with respect to any Conoco Class B
    common stock received in the exchange offer. If the dividend record date is
    after the expiration date of the exchange offer, persons tendering DuPont
    shares in the exchange offer will receive the Conoco dividend for the Conoco
    Class B common stock received in the exchange offer, and the DuPont dividend
    for any DuPont shares returned due to proration.

     The number of holders of record of Conoco's Class A common stock as of June
30, 1999 was 1,787. DuPont currently owns all of the outstanding shares of
Conoco Class B common stock.

     On March 19, 1999, the last full day of trading prior to the initial filing
of the Registration Statement relating to the exchange offer, the closing price
per share of Conoco Class A common stock as reported on the NYSE composite tape
was $24. On July 8, 1999, the second to last full day of trading prior to
commencement of the exchange offer, the closing price per share of Conoco Class
A common stock as reported on the NYSE was $27 3/8. You should obtain current
market quotations for the shares of Conoco Class A common stock before deciding
to tender your DuPont shares. No assurance can be given concerning the market
price of Conoco Class A or Class B common stock in the future and, in
particular, no assurance can be given that the market price of Conoco Class B
common stock will be the same as that of Conoco Class A common stock.

     Conoco's board of directors may declare dividends on Conoco common stock
after considering many factors, including Conoco's competitive position,
available cash, financial condition, earnings and capital requirements. Conoco
may choose not to pay dividends in the future.

                                       36
<PAGE>   37

                  SPECIAL NOTE ON FORWARD-LOOKING INFORMATION

     This document contains or incorporates by reference statements which may
constitute "forward-looking statements." You can identify forward-looking
statements by the words "plans," "believes," "expects," "will," "anticipates,"
"intends," "projects," "estimates" or similar expressions. Forward-looking
statements may address, among other things, DuPont's or Conoco's strategy for
growth, product development, market position, expenditures and financial
results.

     For a discussion identifying some important factors that could cause actual
results to vary materially from those anticipated in the forward-looking
statements, see "Risk Factors" on page 18, and "Management's Discussion and
Analysis of Financial Condition and Results of Operations of Conoco" on page 61.
Also see DuPont's and Conoco's SEC filings, including the cautionary statements
included on page 39 of DuPont's 1998 Annual Report to Stockholders, which were
incorporated by reference into DuPont's Annual Report on Form 10-K for the year
ended December 31, 1998, pages 12 and 13 of DuPont's Form 10-Q for the quarter
ended March 31, 1999, and "Management's Discussion and Analysis of Financial
Condition and Results of Operations" on pages 14 through 39 of DuPont's 1998
Annual Report, which is incorporated by reference in this document.

     Conoco and DuPont caution that any forward-looking statements contained in
this document or incorporated in this document by reference or made by
management of DuPont or Conoco involve risks and uncertainties, and may change
based on various important factors. Conoco and DuPont have based many of these
forward-looking statements on current expectations, estimates and projections
about each company and the petroleum, life sciences and chemical industries in
general. In addition, many of these forward-looking statements are based on
assumptions about future events that may prove to be inaccurate. Accordingly,
actual outcomes and results may differ materially from what Conoco and DuPont
have expressed or forecast in the forward-looking statements. Any differences
could result from a variety of factors including the following:

     - fluctuations in crude oil and natural gas prices and refining and
       marketing margins;

     - failure or delays in achieving expected production from development
       projects;

     - uncertainties inherent in predicting oil and gas reserves and oil and gas
       reservoir performance;

     - lack of exploration success;

     - disruption or interruption of production facilities due to accidents or
       political events;

     - international monetary conditions and exchange controls;

     - liability for remedial actions under environmental regulation;

     - disruption to operations due to untimely or incomplete resolution of Year
       2000 issues;

     - liability resulting from litigation;

     - world economic and political conditions; and

     - changes in tax and other laws.

                                       37
<PAGE>   38

           SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF DUPONT

     The following table contains selected consolidated historical and pro forma
financial data of DuPont's continuing operations as of the dates and for the
periods indicated. The pro forma information is provided to aid in your analysis
of the financial aspects of the exchange offer and cash offer. This information
may not necessarily reflect the results of operations, financial position and
cash flows of DuPont in the future. The information is only a summary and you
should read it together with the pro forma unaudited consolidated financial
statements of DuPont included elsewhere in this document and with the
consolidated financial statements and "Management's Discussion and Analysis of
Financial Condition and Results of Operations" located in the DuPont 1998 Form
10-K/A and the DuPont Form 10-Q/A for the quarter ended March 31, 1999, which we
have filed with the SEC, and which we have incorporated in this document by
reference. To find out where you can obtain copies of DuPont's SEC filings, see
"Where You Can Find More Information" on page 154.

     The pro forma financial data for DuPont give effect to the following
transactions and events:

     - the split-off of Conoco through an exchange of 100 percent of the
       436,543,573 shares of Conoco Class B common stock held by DuPont for
       DuPont common stock held by United States persons. At the exchange ratio
       of 2.95 shares of Conoco Class B common stock for each share of DuPont
       common stock, 147,980,872 shares of DuPont are assumed acquired.

     - a cash offer of $80.76 a share to purchase a maximum of 8,000,000 shares
       of DuPont common stock held by persons that are not United States
       persons.

     - various payments received by DuPont from Conoco in connection with
       Conoco's repayment of intercompany indebtedness to DuPont as part of the
       separation:

        -- receipt by DuPont of Conoco's initial public offering proceeds of
           $4,228 million in October 1998.

        -- receipt by DuPont in April 1999 of $3,970 million from Conoco's sale
           of senior debt securities.

        -- receipt by DuPont in May 1999 of $1,022 million from Conoco's sales
           of commercial paper.

     The historical financial statements of DuPont reflect these payments as of
the dates received. To the extent these events are not reflected in the
historical income statements, the unaudited pro forma income statements for
DuPont assume that these transactions occurred as of the beginning of the
periods presented. To the extent these events are not reflected in the
historical balance sheet, the unaudited pro forma balance sheet assumes that
these transactions occurred as of March 31, 1999.

                                       38
<PAGE>   39

                                     DUPONT

<TABLE>
<CAPTION>
                      THREE MONTHS                                                            PRO FORMA AS      PRO FORMA FOR
                    ENDED MARCH 31,                 YEAR ENDED DECEMBER 31,                  OF AND FOR THE     THE YEAR ENDED
                    ----------------    ------------------------------------------------   THREE MONTHS ENDED    DECEMBER 31,
                     1999      1998      1998       1997      1996      1995      1994       MARCH 31, 1999          1998
                     ----      ----      ----       ----      ----      ----      ----     ------------------   --------------
                      (UNAUDITED)                                                             (UNAUDITED)        (UNAUDITED)
<S>                 <C>       <C>       <C>        <C>       <C>       <C>       <C>       <C>                  <C>
STATEMENT OF
 INCOME DATA:                                          (IN MILLIONS, EXCEPT PER SHARE DATA)
Sales.............  $6,295    $6,194    $24,767    $24,089   $23,644   $24,500   $22,518         $6,295            $24,767
Other Income......      18(1)    297        981      1,005     1,101       797       674             18                981
                    ------    ------    -------    -------   -------   -------   -------         ------            -------
   Total..........   6,313     6,491     25,748     25,094    24,745    25,297    23,192          6,313             25,748
Cost of Goods Sold
 and Other
 Operating
 Charges..........   3,873     4,049     15,664     15,564    15,314    15,572    14,498          3,873             15,664
Selling, General
 and
 Administrative
 Expenses.........     535       479      2,115      2,061     2,119     2,283     2,215            535              2,115
Depreciation and
 Amortization.....     335       332      1,452      1,361     1,526     1,643     1,748            335              1,452
Research and
 Development
 Expense..........     358       264      1,308      1,072       990     1,031     1,004            358              1,308
Interest
 Expense..........      96       127        520        389       409       449       343            118                513
Purchased
 In-Process
 Research and
 Development......      40        60      1,443      1,478        --        --        --             40              1,443
Employee
 Separation Costs
 and Write-down of
 Assets...........      --       118        633        340        --        --        --             --                633
                    ------    ------    -------    -------   -------   -------   -------         ------            -------
       Total......   5,237     5,429     23,135     22,265    20,358    20,978    19,808          5,259             23,128
Income from
 Continuing
 Operations Before
 Income Taxes and
 Minority
 Interests........   1,076     1,062      2,613      2,829     4,387     4,319     3,384          1,054              2,620
Provision for
 Income Taxes.....     432       417        941      1,354     1,416     1,432     1,164            421                919
Minority Interests
 in Earnings of
 Consolidated
 Subsidiaries.....      16         8         24         43        40        29        15             16                 24
                    ------    ------    -------    -------   -------   -------   -------         ------            -------
   Income from
     Continuing
     Operations...  $  628    $  637    $ 1,648    $ 1,432   $ 2,931   $ 2,858   $ 2,205         $  617            $ 1,677
                    ======    ======    =======    =======   =======   =======   =======         ======            =======
Basic Earnings Per
 Share of Common
 Stock --
 Continuing
 Operations.......  $ 0.55    $ 0.56    $  1.45    $  1.26   $  2.60   $  2.43   $  1.61         $ 0.63            $  1.71
Diluted Earnings
 Per Share of
 Common Stock --
 Continuing
 Operations.......  $ 0.55    $ 0.55    $  1.43    $  1.24   $  2.56   $  2.41   $  1.60         $ 0.63            $  1.69
Dividends Per
 Common Share.....  $ 0.35    $0.315    $ 1.365    $  1.23   $ 1.115   $ 1.015   $  0.91
Weighted Average
 Number of Shares
 Outstanding
 (millions):
 Basic............   1,127     1,128      1,129      1,131     1,121     1,170     1,360            971                973
 Diluted..........   1,138     1,146      1,145      1,150     1,140     1,183     1,371            982                988

OTHER DATA:
Cash Provided by
 Continuing
 Operations.......  $  147    $  152    $ 4,132    $ 4,027   $ 4,109   $ 5,170   $ 3,697
Cash Used for
 Investment
 Activities of
 Continuing
 Operations.......  (2,086)   (1,040)     (178)     (4,022)     (987)   (1,286)   (1,744)
Cash Used for
 Financing
 Activities.......   2,242     2,103    (3,053)       (451)   (4,018)   (3,571)   (2,878)

BALANCE SHEET
 DATA:
Cash and Cash
 Equivalents......  $1,003    $2,024    $ 1,059    $ 1,004   $ 1,066   $ 1,408   $   856         $1,003
Working Capital...  (3,872)   (2,374)    (2,374)    (2,110)       15    (2,116)    3,208            283
Net Property,
 Plant and
 Equipment........  14,817    13,092     14,131     12,601    10,959    11,389    11,385         14,817
Total Assets......  41,967    39,797     38,536     36,689    32,342    32,748    32,577         33,317
Long-Term
 Borrowings and
 Capital Lease
 Obligations......   4,566     6,402      4,495      5,897     5,052     5,646     6,338          4,566
Minority
 Interests........     464       381        407        361       315       223       192            464
Stockholders'
 Equity...........  14,133    11,629     13,954     11,270    10,593     8,323    12,743          9,638
</TABLE>

- ------------
(1) Includes an exchange loss of $131 on forward exchange contracts purchased in
    1998 to fix in U.S. dollars the cash required to acquire Herberts, the
    automotive coatings business of Hoechst AG. The purchase price for Herberts
    was negotiated in German marks.

                                       39
<PAGE>   40

           SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF CONOCO

     The following table contains selected historical and pro forma financial
data of Conoco as of the dates and for the periods indicated. The pro forma
financial information is provided to aid in your analysis of the financial
aspects of the exchange offer. This information may not necessarily reflect the
results of operations, financial position and cash flows of Conoco in the future
or what the results of operations, financial position and cash flows would have
been had Conoco been a separate, stand-alone entity during all of the periods
presented. The information is only a summary and you should read it together
with the consolidated financial statements of Conoco and the "Unaudited Pro
Forma Financial Statements of Conoco" and the other information about Conoco
included elsewhere in this document. You should also read the "Risk Factors",
"Management's Discussion and Analysis of Financial Condition and Results of
Operations of Conoco" and "Business of Conoco" sections of this document, which
describe Conoco's business as well as a number of factors that have affected
Conoco's financial results, including declining crude oil and natural gas
prices.

     The pro forma financial data for Conoco give effect to the following
transactions and events:

     - the split-off of Conoco through an exchange of 100 percent of the
       436,543,573 shares of Conoco Class B common stock held by DuPont for
       DuPont common stock held by United States persons; and

     - various payments made by Conoco to DuPont in connection with Conoco's
       repayment of intercompany indebtedness to DuPont as part of the
       separation:

      -- payment by Conoco to DuPont in October 1998 of $4,228 million from
        Conoco's initial public offering proceeds.

      -- payment by Conoco to DuPont in April 1999 of $3,970 million from
        Conoco's sale of senior debt securities.

      -- payment by Conoco to DuPont in May 1999 of $1,022 million from Conoco's
        sales of commercial paper.

     The historical financial statements of Conoco reflect these payments as of
the date made. To the extent these events are not reflected in the historical
consolidated income statements of Conoco, the unaudited pro forma consolidated
income statements assume that these transactions occurred as of the beginning of
the periods presented. To the extent these events are not reflected in the
historical balance sheet, the unaudited pro forma balance sheet assumes that
these transactions occurred as of March 31, 1999.

     Except where otherwise indicated, reserve and production information in the
following tables includes Conoco's share of equity affiliates. Oil includes
crude oil, condensate and natural gas liquids expected to be removed for
Conoco's account from its natural gas production.

                                       40
<PAGE>   41

                                     CONOCO

<TABLE>
<CAPTION>
                                 THREE
                                MONTHS                                                            PRO FORMA AS      PRO FORMA AS
                                 ENDED                                                          ADJUSTED FOR THE    ADJUSTED FOR
                               MARCH 31,                  YEAR ENDED DECEMBER 31,                 THREE MONTHS     THE YEAR ENDED
                            ---------------   -----------------------------------------------        ENDED          DECEMBER 31,
                             1999     1998     1998      1997      1996      1995      1994      MARCH 31, 1999         1998
                             ----     ----     ----      ----      ----      ----      ----     ----------------   --------------
                                                            (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                         <C>      <C>      <C>       <C>       <C>       <C>       <C>       <C>                <C>
STATEMENT OF INCOME DATA:
Total Revenues(1).........  $5,335   $5,834   $23,168   $26,263   $24,416   $20,518   $19,433        $5,335           $23,110
Cost of Goods Sold and
  Other Operating
  Expenses................   3,005    3,393    13,840    16,226    14,560    11,146    10,640         3,005            13,840
Selling, General and
  Administrative
  Expenses................     186      183       736       726       755       728       679           186               736
Stock Option Provision....      --       --       236        --        --        --        --            --               236
Exploration Expenses(2)...      46       67       380       457       404       331       357            46               380
Depreciation, Depletion
  and Amortization........     302      267     1,113     1,179     1,085     1,067     1,244           302             1,113
Taxes Other Than on
  Income(1)...............   1,591    1,417     5,970     5,532     5,637     5,823     5,477         1,591             5,970
Interest and Debt
  Expense.................      71        1       199        36        74        74        63            71               225
                            ------   ------   -------   -------   -------   -------   -------        ------           -------
Income Before Income
  Taxes...................     134      506       694     2,107     1,901     1,349       973           134               610
Provision for Income
  Taxes...................      51      190       244     1,010     1,038       774       551            51               218
                            ------   ------   -------   -------   -------   -------   -------        ------           -------
    Net Income(3).........  $   83   $  316   $   450   $ 1,097   $   863   $   575   $   422        $   83           $   392
                            ======   ======   =======   =======   =======   =======   =======        ======           =======
Segment Net Income:
Upstream:
  United States...........  $   40   $   88   $   219   $   445   $   314   $   258   $   248
  International...........      68      143       283       439       367       234       250
Downstream:
  United States...........      17       34       135       216       172       112       104
  International...........      23       57       156        91       117       121       137
Corporate and Other(3)....     (65)      (6)     (343)      (94)     (107)     (150)     (317)
                            ------   ------   -------   -------   -------   -------   -------
                            $   83   $  316   $   450   $ 1,097   $   863   $   575   $   422
                            ======   ======   =======   =======   =======   =======   =======
Earnings Per Share
  Basic...................  $ 0.13   $ 0.72   $  0.95   $  2.51   $  1.98   $  1.32   $  0.97        $ 0.13           $  0.62
  Diluted.................  $ 0.13   $ 0.72   $  0.95   $  2.51   $  1.98   $  1.32   $  0.97        $ 0.13           $  0.62
Weighted Average Shares
  Outstanding
  Basic...................     628      437       474       437       437       437       437           628               628
  Diluted.................     635      437       475       437       437       437       437           635               637
Dividends Per Share of
  Common Stock(4).........  $ 0.14   $   --   $    --   $    --   $    --   $    --   $    --

OTHER DATA:
Cash Provided By
  Operations..............  $  393   $   12   $ 1,373   $ 2,876   $ 2,396   $ 1,924   $ 2,143
Capital Expenditures and
  Investments.............     415      431     2,516     3,114     1,944     1,837     1,665
Cash Used for Investing
  Activities..............     547      165     1,598     2,037     1,647     1,677     1,364
Cash Used for (Provided
  from) Financing
  Activities..............    (188)     262       555       499       187       313       773
Cash Exploration
  Expense.................      28       43       217       286       262       204       200
</TABLE>

- ------------
(1) Includes petroleum excise taxes of $5,801, $5,349, $5,461, $5,655, and
    $5,291 for 1998, 1997, 1996, 1995 and 1994, and of $1,546 and $1,373 for the
    first three months of 1999 and 1998. Petroleum excise taxes for pro forma
    presentation are the same as in the applicable historical periods presented.

(2) Includes cash exploration overhead and operating expense, DD&A, dry hole
    costs and impairments of unproved properties.

(3) Includes after-tax exchange gains (losses) of $32, $21, $(7), $(40) and
    $(143) for 1998, 1997, 1996, 1995 and 1994, $2 and $7 for the first three
    months of 1999 and 1998 and $23 for the pro forma as adjusted for the year
    ended December 31, 1998 and $2 pro forma as adjusted for the three months
    ended March 31, 1999.

(4) Conoco's initial dividend was determined on a pro rata basis covering the
    period from October 27, 1998, the closing date of Conoco's initial public
    offering, to December 31, 1998, and is equivalent to $0.19 per share for a
    full quarter.

                                       41
<PAGE>   42

                                     CONOCO

<TABLE>
<CAPTION>
                                                                                                                      PRO FORMA
                                                  MARCH 31,                         DECEMBER 31,                     AS ADJUSTED
                                                  ---------        -----------------------------------------------    MARCH 31,
                                               1999       1998      1998      1997      1996      1995      1994         1999
                                               ----       ----      ----      ----      ----      ----      ----     -----------
                                                                                    (IN MILLIONS)
<S>                                           <C>        <C>       <C>       <C>       <C>       <C>       <C>       <C>
BALANCE SHEET DATA:
Cash and Cash Equivalents...................  $   425    $   729   $   394   $ 1,147   $   846   $   286   $   319     $    399
Working Capital.............................     (706)(1)     569       45       567       862       999     1,790         (706)(1)
Net Property, Plant and Equipment...........   11,230     10,831    11,413    10,828    10,082     9,758     9,522       11,230
Total Assets................................   16,080     16,716    16,075    17,062    15,226    14,229    15,271       16,082
Long-Term Borrowings -- Related Parties.....    3,970      1,567     4,596     1,450     2,287     2,141     2,279           --
Other Long-Term Borrowings and Capital Lease
  Obligations...............................       93        103        93       106       101        65       342        4,091
Total Stockholders' Equity/Owner's Net
  Investment................................    4,342      7,936     4,438     7,896     6,579     6,754     7,274        4,342
</TABLE>

<TABLE>
<S>                                                           <C>       <C>       <C>       <C>       <C>       <C>
OPERATING DATA:
Proved Reserves at December 31:
  Oil (MMbbls)..............................................    1,591     1,624       973       977       988
  Natural Gas (Bcf).........................................    6,183     5,861     5,396     5,048     4,674
  Total Proved Reserves (MMBOE).............................    2,622     2,601     1,872     1,818     1,767
International Proved Reserves (% of Total)..................       73%       73%       65%       63%       61%
Reserve Replacement Ratio...................................      110%      448%      126%      127%      157%
Reserve Life (years)(2).....................................     12.3      12.4       8.9       9.3       8.2
Finding and Development Costs
  per BOE(3)................................................  $  4.03   $  3.63   $  4.84   $  5.39   $  6.24
Average Daily Production:
  Oil (Mbbls/day)...........................................      348       374       374       346       367
  Natural Gas (MMcf/day)....................................    1,411     1,203     1,211     1,126     1,327
  Total Production (MBOE/day)...............................      583       575       576       534       588
Average Production Costs per BOE(4).........................  $  3.95   $  4.21   $  3.84   $  3.92   $  3.59
Refinery Capacity at December 31 (Mbbls/day)(5).............      807       754       743       621       602
Refinery Utilization(5).....................................       92%       91%       83%       97%       99%
Total Refinery Inputs (Mbbls/day)(6)........................      823       780       732       721       697
Sales of Refined Products (Mbbls/day).......................    1,049     1,048       998       983       931
Retail Marketing Outlets at December 31(7):
  United States.............................................    4,897     4,903     4,976     5,125     5,196
  International.............................................    3,023     2,971     2,874     2,390     2,438
</TABLE>

- ------------
(1) The working capital deficit results from the issuance of short-term
    commercial paper to repay the remaining related-party debt owed to DuPont.
    For detailed information, see Conoco's unaudited pro forma financial
    statements on page 52.

(2) Total proved reserves at December 31 divided by annual production, excluding
    natural gas liquids from gas plant ownership.

(3) Finding and development costs per barrel-of-oil-equivalent represent a
    trailing five-year average for each year displayed.

(4) Excludes equity affiliates and processed natural gas liquids.

(5) Based on rated capacity to process crude oil and condensate excluding other
    feedstocks.

(6) Includes crude oil, condensate and other feedstocks. This does not include
    Conoco's indirect 1.2 percent interest in a 95,000 barrel per day refinery
    in Mersin, Turkey, acquired as a result of Conoco's marketing joint venture
    in Turkey.

(7) Represents outlets owned by Conoco and others that sell Conoco's refined
    products.

                                       42
<PAGE>   43

        UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS OF DUPONT

     The following unaudited pro forma consolidated financial statements of
DuPont for the year ended December 31, 1998, the three months ended March 31,
1999 and 1998, and as of March 31, 1999 were prepared by DuPont to illustrate
the estimated effects of the exchange offer, the cash offer and the transactions
directly associated with Conoco's initial public offering and separation from
DuPont, principally:

     - the effect to DuPont of the exchange offer relates to the reduction in
DuPont common stock outstanding resulting from the exchange of Conoco Class B
common stock owned by DuPont for DuPont common stock held by United States
persons.

     - the effect to DuPont of the cash offer relates to the reduction of DuPont
common stock outstanding resulting from the cash purchase of DuPont common stock
held by persons that are not United States persons.

     - the effect to DuPont of the initial public offering. In October 1998,
DuPont received Conoco's initial public offering proceeds, in repayment of a
portion of Conoco's intercompany indebtedness to DuPont.

     - the effect to DuPont of Conoco debt issuances. On April 20, 1999, Conoco
completed the sale of senior debt securities, and DuPont received from Conoco
its net proceeds in repayment of a portion of Conoco's indebtedness to DuPont.
In May 1999, Conoco issued commercial paper and used the proceeds to repay its
remaining indebtedness to DuPont.

     These transactions and their effect on DuPont are further described in the
notes to these unaudited pro forma financial statements. To the extent these
events are not reflected in the historical consolidated income statements of
DuPont, the unaudited pro forma consolidated income statements assume that these
transactions occurred as of the beginning of the periods presented. To the
extent these events are not reflected in the historical balance sheet, the
unaudited pro forma balance sheet assumes that these transactions occurred as of
March 31, 1999.

     DuPont believes that the assumptions used provide a reasonable basis for
presenting the significant effects directly attributable to the exchange offer,
the cash offer and the transactions associated with the initial public offering
and separation. The pro forma consolidated financial statements do not purport
to represent what the results of operations or financial position of DuPont
would actually have been if the exchange offer, the cash offer and the
transactions associated with the initial public offering and separation had in
fact occurred on such dates or to project the results of operations or financial
position of DuPont for any future period or date. These statements should be
read in connection with, and are qualified by reference to, the consolidated
financial statements and "Management's Discussion and Analysis of Financial
Condition and Results of Operations," located in DuPont's 1998 Form 10-K/A and
the DuPont's Form 10-Q/A for the quarter ended March 31, 1999, which we have
filed with the SEC, and which we have incorporated in this document by
reference. To find out where you can get copies of DuPont's SEC filings see
"Where You Can Find More Information" on page 154.

                                       43
<PAGE>   44

               PRO FORMA CONSOLIDATED INCOME STATEMENT OF DUPONT
                          YEAR ENDED DECEMBER 31, 1998
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                             PRO FORMA
                                                              HISTORICAL    ADJUSTMENTS    PRO FORMA
                                                              ----------    -----------    ---------
<S>                                                           <C>           <C>            <C>
Sales.......................................................    $24,767                     $24,767
Other Income................................................        981                         981
                                                                -------       ------        -------
  Total.....................................................     25,748                      25,748
Cost of Goods Sold and Other Operating Charges..............     15,664                      15,664
Selling, General & Administrative Expenses..................      2,115                       2,115
Depreciation and Amortization...............................      1,452                       1,452
Research and Development Expense............................      1,308                       1,308
Interest Expense............................................        520       $   (7)(a)        513
Purchased In-Process Research and Development...............      1,443                       1,443
Employee Separation Costs and Write-down of Assets..........        633                         633
                                                                -------       ------        -------
  Total.....................................................     23,135           (7)        23,128
                                                                -------       ------        -------
Income from Continuing Operations Before Income
  Taxes and Minority Interests..............................      2,613            7          2,620
Provision for Income Taxes..................................        941          (22)(b)        919
Minority Interests in Earnings of Consolidated
  Subsidiaries..............................................         24                          24
                                                                -------       ------        -------
Income from Continuing Operations...........................    $ 1,648       $   29        $ 1,677
                                                                =======       ======        =======
Earnings Per Share -- Continuing Operations:
  Basic.....................................................    $  1.45
  Diluted...................................................    $  1.43
Weighted Average Number of Shares Outstanding (millions):
  Basic.....................................................      1,129
  Diluted...................................................      1,145
PRO FORMA EARNINGS PER SHARE FROM CONTINUING OPERATIONS
BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE EXCHANGE
OFFER AND CASH OFFER (SHARES IN MILLIONS):
  Basic --
    100% (156 DuPont shares tendered).......................                                $  1.71
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                $  1.67
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                $  1.61
  Diluted --
    100% (156 DuPont shares tendered).......................                                $  1.69
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                $  1.64
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                $  1.59
PRO FORMA WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE EXCHANGE
OFFER AND CASH OFFER (SHARES IN MILLIONS):
  Basic --
    100% (156 DuPont shares tendered).......................                                    973
    75%(117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off.........                                  1,012
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                  1,051
  Diluted --
    100% (156 DuPont shares tendered).......................                                    988
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                  1,027
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                  1,066
</TABLE>

      See Notes to Unaudited Pro Forma Consolidated Financial Statements.
                                       44
<PAGE>   45

               PRO FORMA CONSOLIDATED INCOME STATEMENT OF DUPONT
                   FOR THE THREE MONTHS ENDED MARCH 31, 1998
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                             PRO FORMA
                                                              HISTORICAL    ADJUSTMENTS    PRO FORMA
                                                              ----------    -----------    ---------
<S>                                                           <C>           <C>            <C>
Sales.......................................................    $6,194                      $6,194
Other Income................................................       297                         297
                                                                ------                      ------
  Total.....................................................     6,491                       6,491
Cost of Goods Sold and Other Operating Charges..............     4,049                       4,049
Selling, General & Administrative Expenses..................       479                         479
Depreciation and Amortization...............................       332                         332
Research and Development Expense............................       264                         264
Interest Expense............................................       127         $(11)(a)        116
Purchased In-Process Research and Development...............        60                          60
Employee Separation Costs and Write-down of Assets..........       118                         118
                                                                ------         ----         ------
  Total.....................................................     5,429          (11)         5,418
                                                                ------         ----         ------
Income from Continuing Operations Before Income
  Taxes and Minority Interests..............................     1,062           11          1,073
Provision for Income Taxes..................................       417           (3)(b)        414
Minority Interests in Earnings of Consolidated
  Subsidiaries..............................................         8                           8
                                                                ------         ----         ------
Income from Continuing Operations...........................    $  637         $ 14         $  651
                                                                ======         ====         ======
Earnings Per Share -- Continuing Operations:
  Basic.....................................................    $ 0.56
  Diluted...................................................    $ 0.55
Weighted Average Number of Shares Outstanding (millions):
  Basic.....................................................     1,128
  Diluted...................................................     1,146
PRO FORMA EARNINGS PER SHARE FROM CONTINUING OPERATIONS
  BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE
    EXCHANGE OFFER AND CASH OFFER (SHARES IN MILLIONS):
    Basic --
       100% (156 DuPont shares tendered)....................                                $ 0.67
       75% (117 DuPont shares tendered; 55 Conoco shares
       sold; 54.1 Conoco shares distributed in a
       spin-off)............................................                                $ 0.64
       50% (78 DuPont shares tendered; 55 Conoco shares
       sold; 163.3 Conoco shares distributed in a
       spin-off)............................................                                $ 0.62
    Diluted --
       100% (156 DuPont shares tendered)....................                                $ 0.66
       75% (117 DuPont shares tendered; 55 Conoco shares
       sold; 54.1 Conoco shares distributed in a
       spin-off)............................................                                $ 0.63
       50% (78 DuPont shares tendered; 55 Conoco shares
       sold; 163.3 Conoco shares distributed in a
       spin-off)............................................                                $ 0.61
PRO FORMA WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
  BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE
    EXCHANGE OFFER AND CASH OFFER (SHARES IN MILLIONS):
    Basic --
       100% (156 DuPont shares tendered)....................                                   972
       75% (117 DuPont shares tendered; 55 Conoco shares
       sold; 54.1 Conoco shares distributed in a
       spin-off)............................................                                 1,011
       50% (78 DuPont shares tendered; 55 Conoco shares
       sold; 163.3 Conoco shares distributed in a
       spin-off)............................................                                 1,050
    Diluted --
       100% (156 DuPont shares tendered)....................                                   988
       75% (117 DuPont shares tendered; 55 Conoco shares
       sold; 54.1 Conoco shares distributed in a
       spin-off)............................................                                 1,027
       50% (78 DuPont shares tendered; 55 Conoco shares
       sold; 163.3 Conoco shares distributed in a
       spin-off)............................................                                 1,066
</TABLE>

      See Notes to Unaudited Pro Forma Consolidated Financial Statements.
                                       45
<PAGE>   46

               PRO FORMA CONSOLIDATED INCOME STATEMENT OF DUPONT
                   FOR THE THREE MONTHS ENDED MARCH 31, 1999
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                             PRO FORMA
                                                              HISTORICAL    ADJUSTMENTS    PRO FORMA
                                                              ----------    -----------    ---------
<S>                                                           <C>           <C>            <C>
Sales.......................................................    $ 6,295                     $ 6,295
Other Income................................................         18                          18
                                                                -------        ----         -------
  Total.....................................................      6,313                       6,313
Cost of Goods Sold and Other Operating Charges..............      3,873                       3,873
Selling, General & Administrative Expenses..................        535                         535
Depreciation and Amortization...............................        335                         335
Research and Development Expense............................        358                         358
Interest Expense............................................         96        $ 22(a)          118
Purchased In-Process Research and Development...............         40                          40
                                                                -------        ----         -------
  Total.....................................................      5,237          22           5,259
                                                                -------        ----         -------
Income from Continuing Operations Before Income
  Taxes and Minority Interests..............................      1,076         (22)          1,054
Provision for Income Taxes..................................        432         (11)(b)         421
Minority Interests in Earnings of Consolidated
  Subsidiaries..............................................         16                          16
                                                                -------        ----         -------
Income from Continuing Operations...........................    $   628        $(11)        $   617
                                                                =======        ====         =======
Earnings Per Share -- Continuing Operations:
  Basic.....................................................    $  0.55
  Diluted...................................................    $  0.55
Weighted Average Number of Shares Outstanding (millions):
  Basic.....................................................      1,127
  Diluted...................................................      1,138
PRO FORMA EARNINGS PER SHARE FROM CONTINUING OPERATIONS
BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE EXCHANGE
OFFER AND CASH OFFER (SHARES IN MILLIONS):
  Basic --
    100% (156 DuPont shares tendered).......................                                $  0.63
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                $  0.62
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                $  0.60
  Diluted --
    100% (156 DuPont shares tendered).......................                                $  0.63
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                $  0.61
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                $  0.59
PRO FORMA WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASED ON ALTERNATIVE LEVELS OF PARTICIPATION IN THE EXCHANGE
OFFER AND CASH OFFER (SHARES IN MILLIONS):
  Basic --
    100% (156 DuPont shares tendered).......................                                    971
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                  1,010
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                  1,049
  Diluted --
    100% (156 DuPont shares tendered).......................                                    982
    75% (117 DuPont shares tendered; 55 Conoco shares sold;
       54.1 Conoco shares distributed in a spin-off)........                                  1,021
    50% (78 DuPont shares tendered; 55 Conoco shares sold;
       163.3 Conoco shares distributed in a spin-off).......                                  1,060
</TABLE>

       See Notes to Unaudited Pro Forma Consolidated Financial Statements
                                       46
<PAGE>   47

                 PRO FORMA CONSOLIDATED BALANCE SHEET OF DUPONT
                                 MARCH 31, 1999
                                 (IN MILLIONS)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                            PRO FORMA
                                                              HISTORICAL   ADJUSTMENTS      PRO FORMA
                                                              ----------   -----------      ---------
<S>                                                           <C>          <C>              <C>
ASSETS
Cash and Cash Equivalents...................................   $ 1,003                      $  1,003
Marketable Securities.......................................        11                            11
Accounts and Notes Receivable...............................     5,399                         5,399
Inventories.................................................     3,566                         3,566
Prepaid Expenses............................................       216                           216
Deferred Income Taxes.......................................       596                           596
                                                               -------      --------        --------
     Total Current Assets...................................    10,791                        10,791
Property, Plant and Equipment...............................    35,469                        35,469
Less: Accumulated Depreciation and Amortization.............    20,652                        20,652
                                                               -------      --------        --------
     Net Property, Plant and Equipment......................    14,817            --          14,817
Investment in Affiliates....................................     1,801                         1,801
Other Assets................................................     5,908                         5,908
Net Assets of Discontinued Operations.......................     8,650      $ (8,650)(a,b)        --
                                                               -------      --------        --------
TOTAL ASSETS................................................   $41,967      $ (8,650)       $ 33,317
                                                               =======      ========        ========
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable............................................   $ 1,900      $     --        $  1,900
Short-Term Borrowings and Capital Lease Obligations.........     9,232        (4,155)(a)       5,077
Income Taxes................................................       374            --             374
Other Accrued Liabilities...................................     3,157            --           3,157
                                                               -------      --------        --------
     Total Current Liabilities..............................    14,663        (4,155)         10,508
Long-Term Borrowings and Capital Lease Obligations..........     4,566            --           4,566
Other Liabilities...........................................     7,663            --           7,663
Deferred Income Taxes.......................................       478            --             478
                                                               -------      --------        --------
     Total Liabilities......................................    27,370        (4,155)         23,215
Minority Interests..........................................       464            --             464
Preferred Stock.............................................       237            --             237
Common Stock................................................       342            --             342
Additional Paid-In Capital..................................     7,866            --           7,866
Reinvested Earnings.........................................     6,933         7,752(b,c)     14,685
Accumulated Other Comprehensive Loss........................      (526)          349(c)         (177)
Common Stock Held in Trust for Unearned Employee
  Compensation and Benefits (Flexitrust), at Market.........      (719)           --            (719)
Treasury Stock..............................................        --       (12,596)(d)     (12,596)
                                                               -------      --------        --------
     Total Stockholders' Equity.............................    14,133        (4,495)          9,638
                                                               -------      --------        --------
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY..................   $41,967      $ (8,650)       $ 33,317
                                                               =======      ========        ========
</TABLE>

      See Notes to Unaudited Pro Forma Consolidated Financial Statements.
                                       47
<PAGE>   48

                                     DUPONT

         NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS OF DUPONT
                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

1. BASIS OF PRESENTATION

     The unaudited pro forma consolidated income statement for the year ended
December 31, 1998 and for the three months ended March 31, 1999 and 1998 and the
unaudited pro forma consolidated balance sheet as of March 31, 1999 have been
prepared from the consolidated financial statements of DuPont for the year ended
December 31, 1998 and for the quarters ended March 31, 1999 and 1998, included
in DuPont's Form 10-K/A for the year ended December 31, 1998 and DuPont's Form
10-Q/A for the period ended March 31, 1999. The financial statements of DuPont
as set forth in its Form 10-K/A for the year ended December 31, 1998 and in its
Form 10-Q/A for the period ended March 31, 1999 present Conoco's petroleum
operations as discontinued operations.

     The pro forma financial statements give effect to the exchange offer, the
cash offer and, as described below, the transactions directly associated with
the initial public offering and separation of Conoco from DuPont. These
transactions and their effect on DuPont are described in the notes to these
unaudited pro forma financial statements. To the extent these events are not
reflected in the historical consolidated income statements of DuPont, the
unaudited pro forma consolidated income statements assume that these
transactions occurred as of the beginning of the periods presented. To the
extent these events are not reflected in the historical balance sheet, the
unaudited pro forma balance sheet assumes that these transactions occurred as of
March 31, 1999.

     The initial public offering of the Class A common stock of Conoco,
previously a wholly owned subsidiary of DuPont, commenced on October 21, 1998,
and the Class A common stock began trading on the New York Stock Exchange on
October 22, 1998. The initial public offering consisted of 191,456,427 shares of
Class A common stock issued at a price of $23 per share, for net proceeds of
$4,228, after deducting the underwriting discounts and commissions payable by
Conoco. The initial public offering represented DuPont's first step in the
planned divestiture of its entire petroleum business. Through DuPont's ownership
of 100 percent of Conoco Class B common stock, a total of 436,543,573 shares,
DuPont owned approximately 70 percent of Conoco's common stock representing
approximately 92 percent of the combined voting power of all classes of voting
stock of Conoco at March 31, 1999.

     In July 1998, a dividend of $7,500 was declared and paid in the form of a
promissory note by Conoco to DuPont. In September 1998, Conoco declared a
dividend of $700 representing a reduction of notes receivable from DuPont. In
connection with the initial public offering and as a part of the separation of
Conoco from DuPont, DuPont transferred to Conoco the ownership of a number of
subsidiaries, which consisted of oil and gas businesses and operations including
the associated assets and liabilities. The transactions related to the
separation were included in the provisions of the separation agreement between
Conoco and DuPont and primarily included the following:

     - structuring Conoco on a stand-alone basis by transferring between DuPont
       and Conoco a number of subsidiaries and assets and liabilities;

     - settling, to the extent specified, intercompany loans in existence prior
       to the initial public offering;

     - delivering a promissory note to DuPont as settlement for DuPont stock
       options held by Conoco employees and other employee benefits related
       liabilities;

     - using the net proceeds of the initial public offering to repay DuPont a
       portion of intercompany indebtedness; and

     - entering into agreements with respect to employee benefit arrangements,
       information management, provision of interim services, financing
       arrangements, tax sharing, environmental liabilities and various
       commercial arrangements.

                                       48
<PAGE>   49
                                     DUPONT

  NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS OF DUPONT --(CONTINUED)
                                  (UNAUDITED)

     Conoco used the net proceeds from the initial public offering to repay
indebtedness owed to DuPont or to purchase a portion of the indebtedness owed by
subsidiaries of Conoco to DuPont as follows:

     - to pay accrued interest ($124) on the $7,500 promissory notes and then to
       repay principal ($2,654) on the note to the extent necessary to reduce
       the principal amount to $4,846;

     - to purchase intercompany notes denominated in Norwegian Kroner with an
       aggregate principal amount of approximately $461 after conversion to U.S.
       dollars, together with accrued interest ($9);

     - to pay accrued interest ($8) and a portion of the principal ($820) on
       another intercompany note to the extent necessary to reduce the principal
       amount to $7; and

     - to pay a portion of the principal ($152) on an intercompany demand note.

The sum of these payments to DuPont in October 1998 was $4,228.

     In April 1999, Conoco sold $4,000 in senior debt securities. Conoco used
the net proceeds of $3,970, after deducting debt issuance costs and note
discount, to reduce the related party debt and accrued interest owed to DuPont.
In May 1999, Conoco issued commercial paper and used the proceeds of $1,022 to
repay its remaining indebtedness to DuPont.

     Under the terms of the exchange offer, DuPont is offering to exchange 436.5
million shares of Conoco Class B common stock owned by DuPont for 148 million
shares of DuPont common stock held by United States persons based on the
exchange ratio. The pro forma financial information contained in this document
has been compiled, in part, on the basis of the exchange ratio of 2.95 shares of
Conoco Class B common stock for each share of DuPont common stock.

     Under the terms of the cash offer, DuPont is offering to purchase a maximum
of 8.0 million shares of DuPont common stock held by persons that are not United
States persons at a cash purchase price of $80.76 a share. The number of shares
to be purchased in the cash offer is calculated by multiplying the estimated
number of shares owned by persons who are not United States persons by the
percentage of all outstanding DuPont shares held by United States persons that
will be exchanged for shares of Conoco Class B common stock if the exchange
offer is fully subscribed. The cash purchase price was determined by multiplying
the exchange ratio of 2.95 by the closing sale price of Conoco Class A common
stock on July 8, 1999 of $27 3/8.

     The DuPont shares received in the exchange offer and cash offer will be
recorded as an increase to treasury stock at the market value of the shares of
Conoco Class B common stock distributed on the expiration date in the exchange
offer and at the cash price paid for DuPont shares in the cash offer. The
exchange offer will result in a net gain to DuPont, after direct expenses of the
disposition, and will be reported as a component of the gain on disposal of
discontinued business. The gain from the exchange offer will result from the
difference between the market value and the carrying value of the shares of
Conoco Class B common stock distributed. There will be no gain or loss from the
cash offer.

     On March 15, 1999, DuPont agreed to effect a business combination with
Pioneer Hi-Bred International, Inc. The merger is expected to close during the
summer of 1999. While the effects of this transaction are not required for pro
forma purposes, in the year 2000, the first full year of combined operations
with Pioneer, DuPont expects fully diluted earnings per share, excluding the
impact of nonrecurring items, to be reduced by about seven percent as the result
of increased interest expense and purchase price amortization of intangible
assets associated with the acquisition. Preliminary analysis indicates that 1999
pro forma earnings, assuming the merger took place on January 1, 1999, could
show even more dilution due to the required exclusion under the pro forma rules
of future operating benefits DuPont expects to realize from the combined
operations. Actual dilution will be dependent on many factors including earnings
of DuPont and Pioneer after the merger, allocations of purchase price including
amounts assigned to purchased in-process research and development, the number of
DuPont shares acquired under the exchange offer and cash offer, and the number
of DuPont shares

                                       49
<PAGE>   50
                                     DUPONT

  NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS OF DUPONT --(CONTINUED)
                                  (UNAUDITED)

issued to acquire Pioneer. See "Risk Factors -- Risk of future acquisitions and
other transactions by DuPont and Conoco."

     The unaudited pro forma consolidated financial statements were prepared
assuming the exchange of 100 percent of Conoco Class B common stock owned by
DuPont for DuPont common stock and 100 percent acceptance of the cash offer. It
is believed that the financial statements presented on this basis are likely to
be substantially representative of the outcome of the offers. However, in order
to give effect to a full range of results, pro forma earnings per share and
weighted average number of shares outstanding are presented assuming a pro rata
reduction from the 100 percent case to 75 percent and 50 percent. The chance of
the latter case occurring is believed to be slight. In the unexpected case the
exchange offer is undersubscribed DuPont will distribute at least a sufficient
number of Conoco shares through a spin-off so that Conoco stock representing at
least 80 percent of the total combined voting power of all of the outstanding
Conoco stock is distributed pursuant to the exchange offer and any subsequent
spin-off.

     The pro forma adjustments are based upon currently available information
and contain estimates and assumptions. DuPont believes the estimates and
assumptions provide a reasonable basis for presenting the significant effects of
the initial public offering, the separation of Conoco from DuPont, the exchange
offer and the cash offer, and that the pro forma adjustments give appropriate
effect to these estimates and assumptions and are properly applied in the
unaudited pro forma consolidated financial statements.

2. PRO FORMA ADJUSTMENTS

  UNAUDITED PRO FORMA CONSOLIDATED INCOME STATEMENTS

     (a) Interest expense for continuing operations in the historical income
statements reflected an allocation to discontinued operations as provided under
EITF Issue 87-24. The pro forma basis interest expense results from the assumed
repayment of DuPont's short-term commercial paper borrowings with actual
proceeds received from Conoco in connection with the initial public offering and
separation of Conoco from DuPont. This is consistent with DuPont's actual use of
proceeds received from Conoco as a result of the transaction. Pro forma interest
also reflects assumed additional commercial paper borrowings totaling $741,
comprised of $646 required to purchase DuPont common stock under the cash offer
and $95 required for direct expenses of the disposition. Pro forma interest
calculations are based on historical interest rates paid by DuPont on short-term
commercial paper borrowings for the periods presented. For the year ended
December 31, 1998 and for the three months ended March 31, 1999 and 1998,
average commercial paper rates were 5.6 percent, 5.1 percent and 5.7 percent,
respectively. To the extent Conoco's payments to DuPont were in excess of
commercial paper borrowings, the excess was not assumed to benefit pro forma
results.

     In the event 75 percent or 50 percent of the maximum number of DuPont
shares (8.0 million shares) are purchased under the cash offer, assumed
additional commercial paper borrowings required are $485 in the 75 percent case
and $323 in the 50 percent case, versus the $646 required if 100 percent of
DuPont shares are purchased. In the event 75 percent or 50 percent of the
maximum number of DuPont shares (148 million shares) are received in exchange
for Conoco shares, 55 million shares of Conoco are assumed to be sold resulting
in a reduction to commercial paper borrowings of $1,004. In the 75 percent case
and the 50 percent case, 54.1 million shares and 163.3 million shares of Conoco
Class B common stock are assumed to be distributed in a spin-off. Taxes assumed
paid on the value of Conoco shares distributed to holders of DuPont common stock
that are not United States persons are $25 in the 75 percent case and $76 in the
50 percent case. Commercial paper borrowings would increase by like amounts.

     The effect of the cash offer on pro forma results is not material in that
pro forma earnings per share data are essentially the same if all DuPont shares
are received in the cash offer or none are received. The benefit

                                       50
<PAGE>   51
                                     DUPONT

  NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS OF DUPONT --(CONTINUED)
                                  (UNAUDITED)

from the reduction in shares outstanding is offset by additional interest
expense associated with debt incurred to finance the repurchase.

     (b) The pro forma provision for income taxes reflects a benefit due to
increased utilization of foreign tax credits when DuPont's provision for income
taxes is computed on a stand-alone basis.

  UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET

     (a) Reflects $4,896 received from Conoco in the second quarter 1999 in full
payment of notes receivable outstanding from Conoco at March 31, 1999 net of
assumed additional borrowings totaling $741, comprised of $646 required to
purchase DuPont common stock under the cash offer and $95 required for direct
expenses of the disposition.

     Assuming the exchange offer and cash offer result in 75 percent and 50
percent of the maximum DuPont shares that may be received under these offers,
pro forma borrowings of $5,077 would be reduced by $1,140 in the 75 percent case
and $1,251 in the 50 percent case, due to proceeds from sale of Conoco stock and
a reduction in cash required under the cash offer, net of taxes paid on the
value of Conoco shares distributed to holders of DuPont common stock that are
not United States persons.

     (b) The gain on the disposition of Conoco will vary with the number of
Conoco Class B common shares exchanged for DuPont common shares. The pro forma
balance sheet assumes that 100 percent or 436.5 million Conoco shares are
exchanged for 148 million DuPont shares. This results in an anticipated net gain
of $8,101, which is net of $95 in direct expenses.

     If 75 percent of Conoco shares are exchanged, the net gain is $6,583 and
includes a net gain of $531 for the sale of 55 million shares of Conoco at the
closing sale price of Conoco Class A common stock on July 8, 1999. Reinvested
earnings are reduced by the book value, $465, of the 54.1 million Conoco shares
assumed distributed through a spin-off. If 50 percent of Conoco shares are
exchanged, the net gain is $4,534 and includes a net gain of $531 for the sale
of 55 million shares of Conoco. Reinvested earnings are reduced by the book
value, $1,404, of the 163.3 million Conoco shares assumed distributed through a
spin-off. Taxes assumed paid on the value of Conoco shares distributed to
holders of DuPont common stock that are not United States persons would reduce
reinvested earnings, assuming 75 percent or 50 percent of Conoco shares are
exchanged, by $25 and $76.

     (c) Reflects the elimination from accumulated other comprehensive loss of
amounts pertaining to Conoco's operations as of March 31, 1999. Amounts
represent cumulative translation adjustment (loss) of $270 and minimum pension
liability adjustment (loss) of $79. The total adjustment reduces the gain on the
transaction by $349.

     (d) The increase in treasury stock of $12,596 assumes that the maximum
number of DuPont shares are received in the exchange offer (148 million DuPont
shares for a total of $11,950) and cash offer (8.0 million DuPont shares for a
total of $646).

     If 75 percent (117 million shares) or 50 percent (78 million shares) were
received in the exchange offer and the cash offer, the pro forma increase in
treasury stock would be reduced by $3,148 in the 75 percent case and $6,298 in
the 50 percent case.

                                       51
<PAGE>   52

               UNAUDITED PRO FORMA FINANCIAL STATEMENTS OF CONOCO

     The following unaudited pro forma financial statements of Conoco for the
year ended December 31, 1998, the three months ended March 31, 1998 and 1999,
and as of March 31, 1999, were prepared by Conoco to illustrate the estimated
effects of the transactions directly associated with Conoco's initial public
offering and separation from DuPont, principally:

     - the effect to Conoco of the initial public offering. In October 1998,
       Conoco paid its initial public offering proceeds in repayment of a
       portion of Conoco's intercompany indebtedness to DuPont.

     - the effect to Conoco of debt issuances. On April 20, 1999, Conoco
       completed the sale of senior debt securities, and Conoco paid to DuPont
       its proceeds in repayment of a portion of Conoco's indebtedness to
       DuPont. In May 1999, Conoco issued commercial paper and used the proceeds
       to repay its remaining indebtedness to DuPont.

     The exchange offer, the cash offer and the possible spin-off or cash sale
of any remaining Conoco Class B common stock as a result of an undersubscription
of shares in the exchange offer, will have no impact on Conoco's historical
capital structure. Conoco's Class B common stock, as reported in its historical
balance sheet, will remain issued and outstanding under any of these outcomes.

     These transactions and their effect on Conoco are further described in the
notes to these unaudited pro forma financial statements. To the extent these
events are not reflected in the historical consolidated income statements of
Conoco, the unaudited pro forma consolidated income statements assume that these
transactions occurred as of the beginning of the periods presented. To the
extent these events are not reflected in the historical balance sheet, the
unaudited pro forma balance sheet assumes that these transactions occurred as of
March 31, 1999.

     Conoco management believes that the assumptions used provide a reasonable
basis for presenting the significant effects directly attributable to the
exchange offer and the transactions associated with the initial public offering
and separation of Conoco from DuPont. The pro forma financial statements do not
purport to represent what the results of operations or financial position of
Conoco would actually have been if the exchange offer and the transactions
associated with the initial public offering and separation had in fact occurred
on such dates or to project the results of operations or financial position of
Conoco for any future period or date. These statements should be read in
connection with, and are qualified by reference to the consolidated financial
statements of Conoco and "Management's Discussion and Analysis of Financial
Condition and Results of Operations of Conoco," included elsewhere in this
document.

                                       52
<PAGE>   53

                    PRO FORMA STATEMENT OF INCOME OF CONOCO
                          YEAR ENDED DECEMBER 31, 1998
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                  INITIAL
                                                                                  PUBLIC         PRO FORMA
                                                   PRO FORMA                     OFFERING           AS
                                      HISTORIC    ADJUSTMENTS      PRO FORMA    ADJUSTMENTS      ADJUSTED
                                      --------    -----------      ---------    -----------      ---------
<S>                                   <C>         <C>              <C>          <C>              <C>
Revenues............................  $23,168        $ (43)(a)      $23,116        $  (6)(d)      $23,110
                                                        (9)(b)
Cost of Goods Sold and Other
  Operating Expenses................   13,840           --           13,840           --           13,840
Selling, General and Administrative
  Expenses..........................      736           --              736           --              736
Stock Option Provision..............      236           --              236           --              236
Exploration Expenses................      380           --              380           --              380
Depreciation, Depletion and
  Amortization......................    1,113           --            1,113           --            1,113
Taxes Other Than on Income..........    5,970           --            5,970           --            5,970
Interest and Debt Expense...........      199          263(a)           462         (237)(e)          225
                                      -------        -----          -------        -----          -------
Income Before Income Taxes..........      694         (315)             379          231              610
Provision for Income Taxes..........      244          (91)(c)          153           65(e)           218
                                      -------        -----          -------        -----          -------
Net Income..........................  $   450        $(224)         $   226        $ 166          $   392
                                      =======        =====          =======        =====          =======
Earnings Per Share (Note 4)
  Basic.............................  $  0.95                                                     $  0.62
  Diluted...........................  $  0.95                                                     $  0.62
Weighted Average Shares Outstanding
  (Note 4)
  Class A...........................       37                                        154              191
  Class B...........................      437                                         --              437
                                      -------                                      -----          -------
     Total Basic....................      474                                        154              628
Stock Options.......................        1                                          8                9
                                      -------                                      -----          -------
     Total Diluted..................      475                                        162              637
                                      =======                                      =====          =======
</TABLE>

             See Notes to Unaudited Pro Forma Financial Statements.
                                       53
<PAGE>   54

                    PRO FORMA STATEMENT OF INCOME OF CONOCO
                       THREE MONTHS ENDED MARCH 31, 1998
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                   INITIAL
                                                                                   PUBLIC         PRO FORMA
                                                    PRO FORMA                     OFFERING           AS
                                       HISTORIC    ADJUSTMENTS      PRO FORMA    ADJUSTMENTS      ADJUSTED
                                       --------    -----------      ---------    -----------      ---------
<S>                                    <C>         <C>              <C>          <C>              <C>
Revenues.............................   $5,834        $ (16)(a)      $5,818         $(16)(d)       $5,802
Cost of Goods Sold and Other
  Operating Expenses.................    3,393           --           3,393           --            3,393
Selling, General and Administrative
  Expenses...........................      183           --             183           --              183
Exploration Expenses.................       67           --              67           --               67
Depreciation, Depletion and
  Amortization.......................      267           --             267           --              267
Taxes Other Than on Income...........    1,417           --           1,417           --            1,417
Interest and Debt Expense............        1          105(a)          106          (59)(e)           47
                                        ------        -----          ------         ----           ------
Income Before Income Taxes...........      506         (121)            385           43              428
Provision for Income Taxes...........      190          (34)(c)         156            9(e)           165
                                        ------        -----          ------         ----           ------
Net Income...........................   $  316        $ (87)         $  229         $ 34           $  263
                                        ======        =====          ======         ====           ======
Earnings Per Share (Note 4)
  Basic..............................   $ 0.72                                                     $ 0.42
  Diluted............................   $ 0.72                                                     $ 0.41
Weighted Average Shares Outstanding
  (Note 4)
  Class A............................       --                                       191              191
  Class B............................      437                                        --              437
                                        ------                                      ----           ------
     Total Basic.....................      437                                       191              628
Stock Options........................       --                                         9                9
                                        ------                                      ----           ------
     Total Diluted...................      437                                       200              637
                                        ======                                      ====           ======
</TABLE>

             See Notes to Unaudited Pro Forma Financial Statements.
                                       54
<PAGE>   55

                    PRO FORMA STATEMENT OF INCOME OF CONOCO
                       THREE MONTHS ENDED MARCH 31, 1999
                      (IN MILLIONS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                         PRO FORMA
                                                                           PRO FORMA        AS
                                                              HISTORIC    ADJUSTMENTS    ADJUSTED
                                                              --------    -----------    ---------
<S>                                                           <C>         <C>            <C>
Revenues....................................................   $5,335           --        $5,335
Cost of Goods Sold and Other Operating Expenses.............    3,005           --         3,005
Selling, General and Administrative Expenses................      186           --           186
Exploration Expenses........................................       46           --            46
Depreciation, Depletion and Amortization....................      302           --           302
Taxes Other Than on Income..................................    1,591           --         1,591
Interest and Debt Expense...................................       71           --            71
                                                               ------       ------        ------
Income Before Income Taxes..................................      134           --           134
Provision for Income Taxes..................................       51           --            51
                                                               ------       ------        ------
Net Income..................................................   $   83           --        $   83
                                                               ======       ======        ======
Earnings Per Share (Note 4)
  Basic.....................................................   $ 0.13                     $ 0.13
  Diluted...................................................   $ 0.13                     $ 0.13
Weighted Average Shares Outstanding (Note 4):
  Class A...................................................      191                        191
  Class B...................................................      437                        437
                                                               ------                     ------
     Total Basic............................................      628                        628
Stock Options...............................................        7                          7
                                                               ------                     ------
     Total Diluted..........................................      635                        635
                                                               ======                     ======
</TABLE>

             See Notes to Unaudited Pro Forma Financial Statements.
                                       55
<PAGE>   56

                       PRO FORMA BALANCE SHEET OF CONOCO
                                 MARCH 31, 1999
                                 (IN MILLIONS)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                            PRO FORMA
                                                                           PRO FORMA           AS
                                                              HISTORIC    ADJUSTMENTS       ADJUSTED
                                                              --------    ------------      ---------
<S>                                                           <C>         <C>               <C>
ASSETS
Cash and Cash Equivalents...................................  $   425       $   (26)(g)      $   399
Accounts and Notes Receivable...............................    1,228            --            1,228
Inventories.................................................      899            --              899
Prepaid Expenses............................................      305            --              305
                                                              -------       -------          -------
     Total Current Assets...................................    2,857           (26)           2,831
Net Property, Plant and Equipment...........................   11,230            --           11,230
Investment in Affiliates....................................    1,445            --            1,445
Other Assets................................................      548            28(f)           576
                                                              -------       -------          -------
Total Assets................................................  $16,080       $     2          $16,082
                                                              =======       =======          =======
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable............................................  $ 1,355       $    --          $ 1,355
Short-Term Borrowings -- Related Parties....................      926           122(f)            --
                                                                                (26)(g)
                                                                             (1,022)(h)
Other Short-Term Borrowings and Capital Lease Obligations...       29         1,022(h)         1,051
Income Taxes................................................      171            --              171
Other Accrued Liabilities...................................    1,082          (122)(f)          960
                                                              -------       -------          -------
     Total Current Liabilities..............................    3,563           (26)           3,537
                                                              -------       -------          -------
Long-Term Borrowings -- Related Parties.....................    3,970        (3,970)(f)           --
Other Long-Term Borrowings and Capital Lease Obligations....       93         3,998(f)         4,091
Deferred Income Taxes.......................................    1,658            --            1,658
Other Liabilities and Deferred Credits......................    2,144            --            2,144
                                                              -------       -------          -------
     Total Liabilities......................................   11,428             2           11,430
                                                              -------       -------          -------
Minority Interests..........................................      310            --              310
Stockholders' Equity........................................    4,342            --            4,342
                                                              -------       -------          -------
Total Liabilities and Stockholders' Equity..................  $16,080       $     2          $16,082
                                                              =======       =======          =======
</TABLE>

             See Notes to Unaudited Pro Forma Financial Statements.
                                       56
<PAGE>   57

                                     CONOCO

                    NOTES TO PRO FORMA FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

1.  BASIS OF PRESENTATION

     The unaudited pro forma statements of income for the year ended December
31, 1998, the three months ended March 31, 1998 and 1999 and the unaudited pro
forma balance sheet as of March 31, 1999 have been prepared from the
consolidated financial statements of Conoco for the year ended December 31, 1998
and the interim consolidated financial statements of Conoco for the three months
ended March 31, 1999 and 1998 as included in this document.

     The pro forma financial statements give effect to the exchange offer and,
as described in note 2 below, the transactions directly associated with the
initial public offering and separation of Conoco from DuPont. These transactions
and their effect on Conoco are described in the notes to these unaudited pro
forma financial statements. To the extent these events are not reflected in the
historical consolidated income statements of Conoco, the unaudited pro forma
consolidated income statements assume that these transactions occurred as of the
beginning of the periods presented. To the extent these events are not reflected
in the historical balance sheet, the unaudited pro forma balance sheet assumes
that these transactions occurred as of March 31, 1999.

     The pro forma financial statements do not purport to represent what the
results of operations or financial position of Conoco would actually have been
if the exchange offer, the transactions associated with the initial public
offering and separation from DuPont, and the sale of senior debt securities and
commercial paper had in fact occurred on such dates or to project the results of
operations or financial position of Conoco for any future date or period. The
pro forma financial statements should be read together with, and are qualified
by reference to, the consolidated financial statements of Conoco and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations of Conoco," included elsewhere in this document.

     The pro forma adjustments are based upon currently available information
and contain estimates and assumptions. Should DuPont's ownership interest fall
below 50 percent, pro forma selling, general and administrative expenses and
guarantee and letter of credit fees would increase by approximately $15 to $20
on a full year basis. In addition, changes were made in services historically
provided to DuPont by Conoco. These changes primarily included ceasing to
provide insurance coverage to DuPont which historically had been provided
through a company-owned captive insurance company, entering into new contractual
commitments related to fees charged by Conoco for services provided to DuPont
such as research and development and securing supplies of natural gas for
various DuPont facilities. The effect of these changes were not material to
Conoco's results of operations and were not reflected in the pro forma
statements of income.

     Conoco management believes the estimates and assumptions provide a
reasonable basis for presenting the significant effects of the exchange offer,
initial public offering and separation of Conoco from DuPont, and that the pro
forma adjustments give appropriate effect to these estimates and assumptions and
are properly applied in the pro forma financial statements.

2.  INITIAL PUBLIC OFFERING AND SEPARATION

     The initial public offering of Class A common stock of Conoco commenced on
October 21, 1998, and the Class A common stock began trading on the New York
Stock Exchange on October 22, 1998. The initial public offering consisted of
191,456,427 shares of Class A common stock issued at a price of $23 per share,
for net proceeds of $4,228, after deducting the underwriting discounts and
commissions payable by Conoco. Through DuPont's ownership of 100 percent of
Conoco Class B common stock, representing a total of 436,543,573 shares, DuPont
owned approximately 70 percent of Conoco's common stock representing
approximately 92 percent of the combined voting power of all classes of voting
stock of Conoco at March 31, 1999.

     In July 1998, a dividend of $7,500 was declared and paid in the form of a
promissory note by Conoco to DuPont. In September 1998, Conoco declared a
dividend of $700 representing a reduction of notes receivable
                                       57
<PAGE>   58
                                     CONOCO

             NOTES TO PRO FORMA FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

from DuPont. In connection with the initial public offering, DuPont transferred
to Conoco the ownership of subsidiaries consisting of oil and gas businesses and
operations including the associated assets and liabilities.

     The transactions related to the separation of Conoco from DuPont primarily
included the following:

     - structuring Conoco on a stand-alone basis by transferring between DuPont
       and Conoco a number of subsidiaries and assets and liabilities;

     - settling, to the extent specified, intercompany loans in existence prior
       to the initial public offering;

     - delivering a promissory note to DuPont as settlement for DuPont stock
       options held by Conoco employees and other employee benefits related
       liabilities;

     - using the net proceeds of the initial public offering to repay a portion
       of the long-term borrowings -- related parties; and

     - entering into agreements with respect to employee benefit arrangements,
       information management, the provision of interim services, financing
       arrangements, tax sharing, environmental liabilities and various
       commercial arrangements.

     Conoco used the net proceeds from the initial public offering to repay
indebtedness owned to DuPont or to purchase a portion of the indebtedness owed
by subsidiaries of Conoco to DuPont as follows:

     - to pay accrued interest ($124) on the $7,500 promissory notes and then to
       repay principal ($2,654) on such note to the extent necessary to reduce
       the principal amount to $4,846;

     - to purchase intercompany notes denominated in Norwegian Kroner with an
       aggregate principal amount of approximately $461 after conversion to U.S.
       dollars, together with accrued interest ($9);

     - to pay accrued interest ($8) and a portion of the principal ($820) on
       another intercompany note to the extent necessary to reduce the principal
       amount to $7; and

     - to pay a portion of the principal ($152) on an intercompany demand note.

     The sum of these payments to DuPont in October 1998 was $4,228.

     In connection with the initial public offering, Conoco and DuPont gave
current employees of Conoco the option, subject to specific country tax and
legal requirements, to participate in a program that involved the cancellation
of all or part of their options to purchase DuPont common stock or stock
appreciation rights with respect to DuPont common stock and the issuance by
Conoco, upon such cancellation, of comparable Conoco Class A common stock
options, or stock appreciation rights with respect to Conoco Class A common
stock. This program was deemed a change in the terms of the affected awards
granted to Conoco employees. As a result, Conoco incurred a non-cash charge to
compensation expense in the fourth quarter of 1998 of $236 pre-tax or $183
after-tax.

3.  PRO FORMA ADJUSTMENTS

     Unaudited Pro Forma Statements of Income

     (a) Reflects a decrease in interest income due to settlement of notes
receivable -- related parties and incremental interest expense resulting from
Conoco's new debt structure. The incremental interest expense was calculated by
multiplying long-term borrowings -- related parties ($7,500), intercompany notes
denominated in Norwegian Kroner ($461) and other intercompany notes ($820) by an
annual interest rate of 6.0125 percent on those borrowings and subtracting the
associated historical related party interest cost of $264 for the year ended
December 31, 1998 and $27 for the three months ended March 31, 1998. The
associated historical-related party

                                       58
<PAGE>   59
                                     CONOCO

             NOTES TO PRO FORMA FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

interest cost excludes capitalized interest of $72 for the year ended December
31, 1998 and $28 for the three months ended March 31, 1998.

     On April 20, 1999, Conoco completed its public offering and sale of $4,000
of multi-tranche senior debt, which included:

     - $1,350 in 5.9 percent five-year notes priced at 99.856 to yield 5.934
       percent;

     - $750 in 6.35 percent ten-year notes priced at par; and

     - $1,900 in 6.95 percent 30-year notes priced at par.

The three tranches had a weighted average interest rate of 6.49 percent.

     In May 1999, Conoco sold $1,022 of commercial paper through a commercial
paper program. This program provides Conoco with up to $2,000 of borrowing
capacity and gives Conoco the ability to issue commercial paper at any time with
various maturities not to exceed 270 days. The proceeds from the commercial
paper resulted from multiple placements, and the average interest rate from all
sales was representative of short-term market rates.

     The net proceeds from senior debt of $3,970 and commercial paper of $1,022
were used to repay all remaining related party debt and accrued interest owed to
DuPont. Despite an incrementally higher interest rate from the senior debt
securities versus the promissory note with DuPont, offset partially by
incrementally lower interest rates from commercial paper sales, pro forma
interest and debt expense continues to be representative of expected interest
and debt expense for all periods presented.

     (b) Reflects the impact of changes in currency exchange rates on
intercompany loans denominated in foreign currencies purchased by Conoco from
DuPont as part of the restructuring and settlement of notes prior to the initial
public offering as provided for in the separation of Conoco from DuPont. These
loans are to Western European petroleum operations for which the local currency
has been designated as the functional currency.

     (c) Reflects the impact of the pro forma adjustments primarily consisting
of increased interest expense resulting from Conoco's new debt structure and a
separate return income tax calculation method on the provision for income taxes.
The historic tax provision for the period prior to the initial public offering
was calculated on a loss benefit method. In accordance with SEC Staff Accounting
Bulletin No. 55, the pro forma provision for income taxes is calculated using a
separate return method.

     The adjustment to the pro forma statement of income for the year ended
December 31, 1998 includes an increase of $6 in the pro forma provision for
income taxes due to the change to the separate return method presentation. The
increase is attributable to a reduction in tax benefits resulting from the
transfer of international exploration subsidiaries from one tax jurisdiction to
another, partially offset by utilization of additional foreign credits against
the provision of U.S. taxes. The pro forma statement of income for the three
months ended March 31, 1998 includes a reduction in the pro forma provision for
income taxes of $5, also due to the change to the separate return method
presentation. This decrease results from the utilization of additional foreign
tax credits to offset U.S. taxes.

     Initial Public Offering Adjustments

     (d) Reflects the impact of changes in currency exchange rates on
intercompany loans denominated in foreign currencies purchased by Conoco from
DuPont after the initial public offering. These loans are to Western European
petroleum operations for which the local currency has been designated as the
functional currency.
                                       59
<PAGE>   60
                                     CONOCO

             NOTES TO PRO FORMA FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

     (e) Represents the reduction of interest expense and the associated
increase in income taxes resulting from the payment to DuPont of the borrowings
described in note 2 relating to the use of net proceeds and the tax impact of
the adjustment described in (d) above.

Unaudited Pro Forma Balance Sheet

     Exchange Offer Adjustments

     (f) Represents the issuance on April 20, 1999 of senior debt securities,
after deducting debt issuance costs and note discount, and the payment of a
portion of the related party debt and accrued interest to DuPont. The remaining
portion of long-term borrowings -- related parties, including accrued interest,
have been reclassified to short-term borrowings -- related parties.

     (g) Represents a payment to DuPont in April 1999 on the revolving credit
facility.

     (h) Represents the sale of $1,022 of commercial paper, through multiple
placements, from a commercial paper program in May 1999. The proceeds were used
to repay the remaining short-term borrowings -- related parties and accrued
interest to DuPont.

4.  EARNINGS PER SHARE

     Unaudited pro forma basic earnings per share include the shares of Conoco
Class A and Class B common stock outstanding immediately after the initial
public offering. Pro forma diluted earnings per share includes the dilutive
effect of the 8.5 million shares of Class A common stock issuable upon exercise
of Conoco stock options, after applying the treasury stock method, which were
issued in the option program upon cancellation of outstanding DuPont stock
options. The adjustments for the basic and diluted pro forma weighted average
shares give effect to the above.

                                       60
<PAGE>   61

        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                        RESULTS OF OPERATIONS OF CONOCO

     The discussion and analysis of Conoco's financial condition and results of
operations should be read together with the consolidated financial statements of
Conoco included in this document.

     At the time of its initial public offering, Conoco's capital structure was
established and the transfer to Conoco of subsidiaries previously owned by
DuPont was substantially completed, resulting in direct ownership of those
subsidiaries. Accordingly, for periods subsequent to Conoco's initial public
offering, financial information is presented on a consolidated basis.

     Prior to the date of Conoco's initial public offering, operations were
conducted by Conoco Inc., subsidiaries of Conoco Inc. and, in some cases,
subsidiaries of DuPont. The accompanying consolidated financial statements of
Conoco for these periods are presented on a carve-out basis prepared from
DuPont's historical accounting records, and include the historical operations of
both entities owned by Conoco and operations transferred to Conoco by DuPont at
the time of the initial public offering. In this context, no direct ownership
relationship existed among all the various units comprising Conoco. Accordingly,
DuPont and its subsidiaries' net investment in Conoco, presented as owner's net
investment, is shown in lieu of stockholders' equity in the consolidated
financial statements for periods prior to the initial public offering.

     Conoco's consolidated statement of income includes all revenues and costs
directly attributable to Conoco, including costs for facilities, functions and
services used by Conoco at shared sites and costs for functions and services
performed by centralized DuPont organizations and directly charged to Conoco
based on usage. In addition, services performed by Conoco on DuPont's behalf are
directly charged to DuPont. The results of operations also include allocations
of DuPont's general corporate expenses through the date of the initial public
offering.

     Prior to the date of the initial public offering, all charges and
allocations of cost for facilities, functions and services performed by DuPont
organizations for Conoco have been deemed to have been paid by Conoco to DuPont,
in cash, in the period in which the cost was recorded in Conoco's consolidated
financial statements. Allocations of current income taxes receivable or payable
are similarly deemed to have been remitted, in cash, by or to DuPont in the
period the related income taxes were recorded. Subsequent to the initial public
offering, such costs are billed directly under transitional service agreements,
and income taxes are paid directly to the taxing authorities, or to DuPont, as
appropriate.

     Conoco has four reporting segments for its upstream and downstream
businesses, reflecting geographic division between the United States and
international. Activities of the upstream business include exploring for, and
developing, producing and selling, crude oil, natural gas and natural gas
liquids. Activities of the downstream business include refining crude oil and
other feedstocks into petroleum products, buying and selling crude oil and
refined products and transporting, distributing and marketing petroleum
products. Corporate and other includes general corporate expenses, financing
costs and other non-operating items, and results for electric power and
related-party insurance operations.

     Conoco considers portfolio optimization to be an ongoing business strategy
and continuously seeks to improve the balance of properties in its investment
portfolio in order to maximize profitability. Over the past five years, Conoco
has generated proceeds of approximately $2,126 million, averaging about $425
million a year, through the disposal of marginal and non-strategic producing
properties, by upgrading and redirecting its exploration portfolio and by
increasing its ownership in large scale properties. As a result, Conoco has
maintained production essentially constant on a barrel-of-oil-equivalent basis
while undergoing these changes in its properties. Conoco's policy is to report
material gains and losses from individual asset sales as special items when
reporting consolidated net income.

     Conoco conducts its activities through wholly and majority owned
subsidiaries and, increasingly, through investments in corporate entities,
partnerships and limited liability companies in which Conoco exerts significant
influence, generally having a 20-50% ownership interest. Conoco refers to such
investments in this document as "equity affiliates". This trend of conducting
business in the petroleum industry through equity affiliates is

                                       61
<PAGE>   62

expected to increase in the future as Conoco attempts to minimize either the
capital or political risks associated with new large-scale, high-impact
projects.

LIQUIDITY AND CAPITAL RESOURCES

  CASH PROVIDED BY OPERATIONS

     Cash provided by operations in the first three months of 1999 increased
$381 million to $393 million versus $12 million in the first three months of
1998. Cash provided by operations before changes in operating assets and
liabilities decreased $234 million compared to the first three months of 1998.
The decrease was primarily due to lower net realized crude oil and natural gas
prices, weaker refined product margins and increased interest expense resulting
from separation-related debt to DuPont incurred in the second half of 1998, and
was partly offset by higher volumes. Positive changes to net operating assets
and liabilities of $615 million were due to timing of payments on other
operating liabilities, lower 1999 tax payments and higher 1999 accrued interest,
offset by an increase in accounts receivable due to higher crude oil prices late
in the first quarter of 1999.

     Cash provided by operations in 1998 decreased $1,503 million to $1,373
million versus $2,876 million in 1997. Cash provided by operations before
changes in operating assets and liabilities decreased $303 million compared to
1997. The decrease was primarily due to lower net realized crude oil and natural
gas prices, partially offset by higher natural gas volumes and improved
international downstream margins. Negative changes to net operating assets and
liabilities of $1,200 million were due to higher tax payments attributable to
1997 asset sales and a decrease in accounts payable, offset by a decrease in
accounts receivable due to lower crude oil prices.

     Cash provided by operations increased $480 million, or 20 percent, to
$2,876 million during 1997 versus $2,396 million in 1996. Positive changes to
net operating assets and liabilities of $446 million were principally due to the
$303 million received from a contract for future sales of natural gas to
Centrica, a United Kingdom gas marketing company.

INVESTMENT ACTIVITIES

  CAPITAL EXPENDITURES AND INVESTMENTS

<TABLE>
<CAPTION>
                                                        THREE MONTHS
                                                           ENDED
                                                         MARCH 31,        YEAR ENDED DECEMBER 31
                                                        ------------    --------------------------
                                                        1999    1998     1998      1997      1996
                                                        ----    ----    ------    ------    ------
                                                                      (IN MILLIONS)
<S>                                                     <C>     <C>     <C>       <C>       <C>
Upstream:
  United States.......................................  $113    $149    $  788    $1,534    $  400
  International.......................................   198     187     1,177       999       864
                                                        ----    ----    ------    ------    ------
          Total Upstream..............................  $311    $336    $1,965    $2,533    $1,264
Downstream:
  United States.......................................  $ 32    $ 30    $  201    $  227    $  218
  International.......................................    70      65       332       331       462
                                                        ----    ----    ------    ------    ------
          Total Downstream............................  $102    $ 95    $  533    $  558    $  680
Corporate and Other...................................     2      --        18        23        --
                                                        ----    ----    ------    ------    ------
          Total Capital Expenditures and
            Investments...............................  $415    $431    $2,516    $3,114    $1,944
                                                        ====    ====    ======    ======    ======
United States.........................................  $147    $179    $1,007    $1,761    $  618
International.........................................   268     252     1,509     1,353     1,326
                                                        ----    ----    ------    ------    ------
          Total.......................................  $415    $431    $2,516    $3,114    $1,944
                                                        ====    ====    ======    ======    ======
</TABLE>

     Total capital expenditures and investments were $415 million in the first
quarter of 1999, a decrease of $16 million, or four percent, versus $431 million
in the first quarter of 1998. The first quarter of 1999 excluded amounts paid
for the completion of 1998 acquisitions. The decrease is primarily due to lower
spending on upstream capital projects in the United States.

                                       62
<PAGE>   63

     Total capital investments in 1998 were $2,516 million, a decrease of 19
percent versus 1997 capital investments of $3,114 million, which included a $929
million acquisition of natural gas properties and transportation assets in the
Lobo trend in South Texas. Approximately 60 percent of 1998 capital investments
were outside the United States. About 78 percent of 1998 capital investments
were spent in upstream, with a majority of this devoted to development projects
in South Texas, deepwater Gulf of Mexico, Venezuela, the United Kingdom and
Norway. Approximately $312 million was spent on exploratory drilling and
leasing. Downstream capital investments in 1998 included completion of the
Melaka refinery in Malaysia, expansion of retail marketing operations,
particularly in Europe, and upgrades and maintenance of existing facilities.
Conoco also spent approximately $18 million for corporate software in 1998.

     Total capital investments, including investments in affiliates and
acquisitions, were $3,114 million in 1997, a 60 percent increase over 1996
capital investments of $1,944 million. This increase primarily reflects the Lobo
acquisition.

     Discussed below is a more detailed analysis of capital expenditures and
investments by operating segments within the U.S. and international. Capital
expenditures and investments do not include expensed exploration costs.

  UPSTREAM
  --------

     Upstream capital expenditures and investments, excluding amounts paid in
the first quarter of 1999 for the completion of 1998 acquisitions, totaled $311
million in the first three months of 1999. The decrease of $25 million, or
approximately seven percent, compared to $336 million for the first three months
of 1998, was primarily a result of an overall reduction in the 1999 capital
expenditure program, including exploration, partly offset by 1999 investments in
Petrozuata, a joint venture in Venezuela.

     Upstream capital investments totaled $1,965 million in 1998, a decrease of
$568 million, or 22 percent, compared to $2,533 million in 1997, which included
the $929 million Lobo acquisition.

     Upstream capital investments totaled $2,533 million in 1997, an increase of
$1,269 million, or 100 percent, compared to $1,264 million in 1996, primarily as
a result of the Lobo acquisition. The Lobo acquisition added significant
reserves and 1,150 miles of natural gas gathering and transportation pipeline,
providing direct access to major Texas intrastate and interstate pipelines. As a
result, Conoco is the largest natural gas producer in the area and the second
largest natural gas producer in Texas.

     Conoco adjusts its capital expenditure budgets on an annual basis. Conoco
currently has long-term commitments to fund the following upstream projects:

     - $275 million in equity advances for Petrozuata;

     - $250 million for three major projects in Norway;

     - $170 million for the West Natuna gas development project in Indonesia;
       and

     - $490 million for charter fees for Conoco's two new drillships.

  United States

     During the first three months of 1999, Conoco spent $113 million on capital
projects in the United States, a decrease of $36 million, or 24 percent, from
$149 million in the first three months of 1998. Expenditures in the first three
months of 1999 focused on the continued development of the Lobo field in South
Texas and the completion of the Ursa field in the deepwater Gulf of Mexico.

     In 1998, U.S. capital investments were $788 million, a decrease of $746
million, or 49 percent, compared to 1997 U.S. capital investments of $1,534
million, which included the $929 million Lobo acquisition. Expenditures in 1998
focused on continuing operations and development. This included

     - the development of the Lobo field and the Ursa field in the deepwater
       Gulf of Mexico;

                                       63
<PAGE>   64

     - the construction of two deepwater drillships, the first of which went
       into service in January 1999 in the Gulf of Mexico, and the second of
       which went into service in April 1999 in New Zealand;

     - the acquisition of exploratory acreage; and

     - the expansion of onshore natural gas operations.

The Ursa field development represents a major development project in the Gulf of
Mexico. The project involved installing a new generation tension leg platform in
approximately 3,900 feet of water. Initial production began in March 1999.

     During 1997, Conoco spent $1,534 million on capital projects in the United
States, an increase of $1,134 million, or 284 percent, compared to 1996 U.S.
capital investments of $400 million. Besides the $929 million Lobo acquisition
and exploratory drilling, expenditures focused on

     - development of the Ursa field in deepwater Gulf of Mexico;

     - construction of two deepwater drillships;

     - acquisition of additional reserves and exploratory acreage in the San
       Juan Basin; and

     - expansion of onshore natural gas operations.

     In 1996, U.S. capital investments focused on continuing operations and
development.

  International

     International capital expenditures and investments totaled $198 million in
the first three months of 1999, an increase of $11 million, or six percent, from
$187 million in the first three months of 1998. The 1999 expenditures include
investment in Petrozuata, as well as continued development of various fields in
the U.K. and Norwegian sector of the North Sea.

     In 1998, international capital investments were $1,177 million, an increase
of $178 million, or 18 percent, compared to $999 million in 1997. The 1998
increase reflects expenditures to complete the multi-year development program in
the Britannia gas field in the U.K. North Sea, with first production in August
1998. Other significant capital investments were made for exploratory drilling
and development projects such as:

     - the Petrozuata joint venture in Venezuela, which also began production in
       August 1998;

     - the Visund field in the Norwegian North Sea; and

     - the Viking Phoenix project in the U.K. North Sea.

Conoco increased its natural gas holdings in the U.K. sector of the North Sea
through its acquisition of the British subsidiary of Canadian Occidental
Petroleum Ltd., which held an interest in the South Valiant, Vulcan and Caister
fields, as well as interests in the Murdoch and Esmond gas transportation
systems.

     International capital investments totaled $999 million in 1997, an increase
of $135 million, or 16 percent, compared to international capital investments of
$864 million in 1996. Conoco continued to develop the Britannia gas field in the
U.K. North Sea. Other significant capital investments were made for exploratory
drilling and development projects such as:

     - the Petrozuata joint venture in Venezuela;

     - the Ukpokiti field offshore Nigeria;

     - the Visund field in the Norwegian North Sea;

     - a methanol plant in Norway; and

     - the Boulton gas field in the U.K. North Sea.

In 1996, international capital investments were $864 million, reflecting
expenditures to develop the Britannia field and $67 million to fund Conoco's
share of losses incurred by a European gas marketing joint venture.
                                       64
<PAGE>   65

  DOWNSTREAM
  --------

     Downstream capital expenditures and investments totaled $102 million in the
first three months of 1999, an increase of $7 million, or seven percent, versus
$95 million in the first three months of 1998, primarily reflecting increased
expenditures for European and Asia-Pacific refining operations.

     Downstream capital investments were $533 million in 1998, a decrease of $25
million, or four percent, versus $558 million in 1997, primarily as a result of
lower investments in equity affiliates.

     Downstream capital investments totaled $558 million in 1997, a decrease of
$122 million, or 18 percent, versus $680 million in 1996, primarily reflecting
completion of the acidic crude vacuum unit at Conoco's Humber refinery in the
U.K., as well as the acquisition of an equity interest in two refineries in the
Czech Republic during 1996.

     Conoco currently has long-term commitments to fund the following downstream
projects:

     - $150 million to comply with clean fuels specifications at the Humber
       refinery in the U.K.; and

     - $165 million to facilitate the processing of Petrozuata synthetic crude
       at the Lake Charles refinery.

  United States

     During the first three months of 1999, Conoco spent $32 million on
downstream capital projects in the United States, up $2 million, or seven
percent, from $30 million in the first three months of 1998. The majority of the
funds spent were used to support continuing refining operations.

     Investments in 1998 totaled $201 million, a decrease of $26 million, or 11
percent, versus 1997 investments of $227 million. Investments in 1998 included
costs for continued operations and optimization of retail marketing operations.
Conoco also invested $8 million for an increased ownership interest in Penreco,
a joint venture with Pennzoil-Quaker State that produces and markets highly
refined specialty petroleum products.

     During 1997, Conoco spent $227 million on downstream capital projects in
the United States, an increase of $9 million, or four percent, compared to
investments of $218 million in 1996. The majority of the 1997 funds were used to
support continuing operations and optimization of retail marketing operations.
Conoco also invested funds for an initial equity interest in Penreco.

     Capital investments in 1996 totaled $218 million. The most significant
investments related to the completion of the 45,000 barrel per day expansion of
the Lake Charles refinery's sour crude oil processing capability to support the
Excel Paralubes lube oil hydrocracker joint venture with Pennzoil. The lube oil
hydrocracker converts low quality, high sulphur vacuum gas oil into base oil of
extremely high purity and enhances the value of Conoco's finished lubricants
business by producing improved motor oils, transmission fluids and industrial
lubes blended from hydrocracked base oils.

  International

     During the first three months of 1999, Conoco spent $70 million on
downstream international capital expenditures and investments, up $5 million, or
eight percent, from $65 million in the first three months of 1998. Expenditures
in the first three months of 1999 focused on strengthening Conoco's retail
marketing position, as well as investment in the Melaka Refinery in Malaysia and
the Humber Refinery in the U.K.

     In 1998, Conoco made capital investments of $332 million including
investments in Conoco's retail marketing position in core markets such as
Germany and Austria, and newer retail markets such as Thailand, as well as
investments for completing the construction of the Melaka refinery, a joint
venture with Petronas and Statoil, which began operation in the third quarter of
1998.

     During 1997, Conoco spent $331 million on downstream international capital
investments, a decrease of $131 million, or 28 percent, from 1996 capital
investments of $462 million. The decrease was due to expenditures in 1996
relating to costs for the acidic crude vacuum unit at Conoco's Humber refinery.
The installation of the vacuum unit at the Humber refinery allowed the refinery
to process acidic crude oil, including

                                       65
<PAGE>   66

equity crude oil from the Heidrun field. Expenditures in 1997 focused on
strengthening Conoco's retail marketing position in core markets such as
Germany, Austria and the Nordic countries, expanding in targeted retail growth
markets in Central and Eastern Europe, Spain, Turkey and the Asia Pacific
region, and continuing the construction of the Melaka refinery.

     Capital investments in 1996 totaled $462 million and included costs for the
acidic crude vacuum unit at Conoco's Humber refinery, construction expenditures
related to the Melaka refinery, acquisition of equity interests in two Czech
refineries, and expansion of retail marketing operations, particularly in
Eastern Europe. The acquisition of the equity interests in the two Czech
refineries supported the expansion of Conoco's retail marketing operations in
the emerging markets in Eastern Europe, including the Czech Republic, Poland,
Hungary and Slovakia.

  CORPORATE AND OTHER
  --------

     Corporate and other capital expenditures totaled $2 million in the first
three months of 1999, and were associated with the capitalization of new
computer software.

     Capital investments in 1998 were $18 million and were primarily associated
with corporate software.

     Capital investments in 1997 were $23 million, most of which represent
Conoco's investment in electric power generation projects through international
equity affiliates. Because of deregulation within this industry, Conoco expects
to continue to pursue projects that leverage the economic advantages of Conoco's
energy production activities and the demand for energy in DuPont or third party
manufacturing operations.

     There were no capital investments in corporate and other during 1996.

  PROCEEDS FROM SALES OF ASSETS AND SUBSIDIARIES

     Conoco's investment activities also include proceeds of $18 million for the
first three months of 1999, a decrease of $257 million from the first three
months of 1998, which included $54 million from the sale of North Sea producing
and non-producing properties and $156 million from the sale of various
downstream assets in the U.S. These proceeds are a result of Conoco's ongoing
strategic portfolio realignment.

     Conoco's 1998 investment activities included proceeds of $721 million, a 28
percent increase over $565 million in 1997. The 1998 proceeds included $245
million from the sale of upstream U.S. and North Sea properties, $156 million
from the sale of various downstream assets in the U.S., as well as $54 million
from the sale of an office building in Europe.

     These and other proceeds are a result of Conoco's ongoing strategic
portfolio management program designed to improve profitability. In recent years,
Conoco has consolidated its exploration and production operations by selling
hundreds of smaller, less efficient properties, while acquiring an increased
interest in its larger producing areas. As a result, Conoco has reduced the
number of producing fields while maintaining production essentially constant on
a barrel-of-oil-equivalent basis. 1997 proceeds were $565 million, an increase
of $237 million versus 1996 proceeds of $328 million.

FINANCING ACTIVITIES

     Conoco's ability to maintain and grow its operating income and cash flow
depends upon continued capital spending. Conoco believes its future cash flow
from operations and its borrowing capacity should be sufficient to fund
dividends, debt service, capital expenditures and working capital requirements
and to service debt.

     Prior to the separation from DuPont, the businesses transferred to Conoco
were funded through DuPont. Apart from limited recourse project financing
related to various joint ventures, equipment lease facilities and financing of
refinery equipment and other small financings, Conoco has had limited
indebtedness to third parties. Since the time of its initial public offering,
Conoco's operations have been funded through internally generated funds, related
party debt with DuPont and third party borrowings.

                                       66
<PAGE>   67

     In July 1998, Conoco issued a promissory note to DuPont in the aggregate
principal amount of $7,500 million bearing interest at a rate of 6.0125 percent
per annum. In October 1998, Conoco raised net proceeds of $4,228 million in its
initial public offering. The net proceeds from the initial public offering were
used to repay a portion of the $7,500 million promissory note and other
intercompany notes with DuPont. Total indebtedness owed to DuPont, following
application of the net proceeds of the initial public offering and the
determination of Conoco's cash and cash equivalents in excess of $225 million,
was $4,853 million, consisting of $4,846 million related to the $7,500 million
promissory note described in the above paragraph and $7 million remaining on an
$827 million promissory note, due January 2, 2000, and bearing interest at a
rate equal to the six-month LIBOR plus 0.375 percent per annum.

     On October 27, 1998, Conoco and DuPont entered into a revolving credit
agreement under which DuPont provides Conoco with a revolving credit facility in
principal amount of up to $500 million. Total indebtedness owed to DuPont was
$4,896 million as of March 31, 1999, consisting of $926 million in short-term
borrowings and $3,970 million in long-term borrowings. The short-term borrowings
consisted of $300 million due on the revolving credit agreement and $626 million
representing the short-term portion of the $4,596 million promissory notes due
to DuPont.

     In April 1999, Conoco issued $4,000 million in senior fixed-rate debt
securities with a weighted average interest rate of 6.49%. The net proceeds of
this offering of $3,970 million were used to repay a portion of the outstanding
principal and accrued interest on the $7,500 million promissory note.

     In May 1999, Conoco instituted a commercial paper program with a borrowing
capacity up to $2,000 million that gives Conoco the ability to issue commercial
paper at any time with various maturities not to exceed 270 days. Also in May
1999, Conoco made multiple placements aggregating $1,022 million under this
program, and the average interest rate from all sales was representative of
short-term market rates. The proceeds were used to repay all related party debt
owed to DuPont. Upon the repayment of the indebtedness to DuPont, Conoco and
DuPont terminated the revolving credit agreement.

                                       67
<PAGE>   68

RESULTS OF OPERATIONS

  CONSOLIDATED RESULTS

<TABLE>
<CAPTION>
                                                        THREE MONTHS
                                                       ENDED MARCH 31      YEAR ENDED DECEMBER 31
                                                       ---------------   ---------------------------
                                                        1999     1998     1998      1997      1996
                                                       ------   ------   -------   -------   -------
                                                        (IN MILLIONS)           (IN MILLIONS)
<S>                                                    <C>      <C>      <C>       <C>       <C>
SALES AND OTHER OPERATING REVENUES
  Upstream
     United States..................................   $  706   $  863   $ 3,200   $ 3,348   $ 2,783
     International..................................      479      456     1,601     1,906     1,943
                                                       ------   ------   -------   -------   -------
          Total Upstream............................   $1,185   $1,319   $ 4,801   $ 5,254   $ 4,726
  Downstream
     United States..................................   $1,962   $2,185   $ 8,949   $11,394   $10,545
     International..................................    2,143    2,028     8,297     8,639     8,880
                                                       ------   ------   -------   -------   -------
          Total Downstream..........................   $4,105   $4,213   $17,246   $20,033   $19,425
  Corporate and Other                                      21      204       749       509        79
                                                       ------   ------   -------   -------   -------
          Total Sales and Other Operating
            Revenues................................   $5,311   $5,736   $22,796   $25,796   $24,230
                                                       ======   ======   =======   =======   =======
AFTER-TAX OPERATING INCOME
  Upstream
     United States..................................   $   40   $   88   $   219   $   445   $   314
     International..................................       68      143       283       439       367
                                                       ------   ------   -------   -------   -------
          Total Upstream............................   $  108   $  231   $   502   $   884   $   681
  Downstream
     United States..................................   $   17   $   34   $   135   $   216   $   172
     International..................................       23       57       156        91       117
                                                       ------   ------   -------   -------   -------
          Total Downstream..........................   $   40   $   91   $   291   $   307   $   289
  Corporate and Other Operating.....................      (15)     (20)     (271)      (82)      (74)
                                                       ------   ------   -------   -------   -------
          Total After-Tax Operating Income..........   $  133   $  302   $   522   $ 1,109   $   896
  Interest and Other Non-Operating Income Expense
          Net of Tax................................      (50)      14       (72)      (12)      (33)
                                                       ------   ------   -------   -------   -------
          CONSOLIDATED NET INCOME...................   $   83   $  316   $   450   $ 1,097   $   863
                                                       ======   ======   =======   =======   =======
</TABLE>

                                       68
<PAGE>   69

  SPECIAL ITEMS

     Consolidated net income includes the following non-recurring special items
on an after-tax basis:

<TABLE>
<CAPTION>
                                                              THREE MONTHS
                                                                 ENDED
                                                               MARCH 31,     YEAR ENDED DECEMBER 31
                                                              ------------   -----------------------
                                                              1999    1998    1998     1997    1996
                                                              -----   ----   ------   ------   -----
                                                                                  (IN MILLIONS)
<S>                                                           <C>     <C>    <C>      <C>      <C>
UPSTREAM
Asset sales.................................................     --   $23    $  95    $ 240    $ 16
Property impairments........................................     --    --      (38)    (112)    (63)
Tax rate changes............................................     --    --       --       19      --
Employee separation costs...................................     --    --      (42)      --     (11)
Inventory write-downs.......................................     --    --       (4)      --      --
                                                              -----   ---    -----    -----    ----
          Total Upstream Special Items......................     --    23    $  11    $ 147    $(58)
                                                              =====   ===    =====    =====    ====
DOWNSTREAM
Asset sales.................................................     --    --    $  12    $  --    $ 19
Property impairments........................................     --    --       --      (55)     --
Tax rate changes............................................     --    --       --       11      --
Environmental insurance litigation recoveries...............     --    --       --       --      44
Employee separation costs...................................     --    --      (10)      --     (11)
Inventory write-downs.......................................     --    --      (59)      --      --
Environmental litigation settlements........................     --    --      (28)     (23)     --
                                                              -----   ---    -----    -----    ----
          Total Downstream Special Items....................     --    --    $ (85)   $ (67)   $ 52
                                                              =====   ===    =====    =====    ====
CORPORATE AND OTHER
Stock option provision......................................     --    --    $(183)   $  --    $ --
Environmental litigation settlements........................     --    --      (14)      --      --
                                                              -----   ---    -----    -----    ----
          Total Corporate and Other Special Items...........     --    --    $(197)   $  --    $ --
                                                              =====   ===    =====    =====    ====
TOTAL SPECIAL ITEMS.........................................     --   $23    $(271)   $  80    $ (6)
                                                              =====   ===    =====    =====    ====
</TABLE>

     There were no special items for the first three months of 1999. Special
items for the first three months of 1998 reflect a $23 million gain from the
sale of properties in the North Sea.

     Special items in 1998 include $107 million in gains from several unrelated
asset sales. The gains consist of:

     - $54 million from the sale of producing and non-producing international
       upstream properties;

     - $41 million from U.S. upstream producing properties and assets; and

     - $12 million in downstream from the sale of an office building in Europe.

The upstream sales are a normal part of Conoco's ongoing strategic portfolio
management program designed to improve profitability by disposing of marginal
properties and concentrating operations on core properties. Offsetting the gains
were:

     - property impairments of $38 million;

     - inventory write-downs of $63 million to market prices;

     - restructuring and employee separation costs of $52 million; and

     - other losses of $42 million for environmental litigation settlements.

     The after-tax property impairments of $38 million were made in accordance
with Conoco's policy on impairment of long-lived assets, and relate to a $32
million after-tax writedown of United States upstream properties and a $6
million after-tax writedown of an international upstream property. The United
States

                                       69
<PAGE>   70

properties include various oil and gas producing properties in Texas and in the
Gulf of Mexico, as well as a non-operating natural gas plant in Texas. The
writedown of the oil and gas properties became necessary because of reductions
to Conoco's price forecast in light of deteriorating pricing conditions. The
international property is an exploration license in Norway and was written down
after the decision was made to discontinue further investment in the license.
The fair value of oil and gas producing properties subject to the write-down was
based on the present value of estimated future net cash flows from the
properties using Conoco's projections of future prices, which were higher than
year-end prices, and costs.

     The $63 million write-down at year-end 1998 was the result of significant
declines in crude oil and petroleum product prices occurring primarily in the
fourth quarter of 1998. On a quarterly basis, Conoco evaluates whether the book
value of its crude oil, natural gas, and petroleum products inventories exceeds
the market value of such inventories. This evaluation is made on a region by
region basis for each pool of inventory. For the purpose of this evaluation, the
inventories are grouped into United States, Europe and Asia Pacific regions and
grouped into as many as twelve different pools per region based on relative
values. Conoco writes down its inventories for each region when the book value
of the inventory within a region exceeds the market value of such inventory. The
average book value of inventories on a price per barrel basis across all pools
decreased from $16.68 to $13.80 in the United States region, from $20.99 to
$18.54 in the European region and from $46.75 to $29.56 in the Asia Pacific
region. The significantly larger difference in value in the Asia Pacific region
resulted from Conoco's more recent acquisition of inventories in that region as
well as the recent dramatic economic decline in the region.

     With respect to the likelihood of future write downs, Conoco optimizes its
inventory levels to minimize operating inventories and typically operates at or
near the same levels of inventories. Conoco is unaware of any strategic or
operating plans that would affect its inventory volumes such that a write-down
would be likely. Furthermore, based on the recent strengthening of energy prices
at the end of the first quarter of 1999 versus the market conditions at the time
of the year-end write-down, no further write-downs are anticipated in 1999. For
a discussion of the $52 million after-tax charge for restructuring and employee
related costs, see page 80.

     The $42 million environmental settlement relates to the settlement in 1998
of lawsuits and a number of group and individual claims for alleged property
damage, personal injury, and medical monitoring. In each of these settlements,
Conocco was and is bound to confidentiality agreements with the settling
parties, most of which involved court approval.

     The $183 million stock option provision is a one-time non-cash charge for
stock option employee compensation expenses related to the replacement of
outstanding DuPont stock options held by Conoco employees with Conoco stock
options in connection with the initial public offering.

     Upstream special items in 1997 include $240 million in gains from asset
sales consisting of $191 million associated with producing and non-producing
properties in the North Sea and $49 million in the United States. Such asset
sales are part of Conoco's ongoing strategic portfolio management program. A
United Kingdom tax rate change also provided a $19 million benefit in 1997.
Offsetting these benefits were property impairments of $112 million relating to
international non-revenue producing properties. Downstream special items in 1997
include a United Kingdom tax rate change benefit of $11 million. Offsetting this
benefit were property impairments of $55 million attributable to the write-down
of an office building held for sale in Europe. Other losses of $23 million
include environmental litigation charges.

     Upstream special items in 1996 include a gain of $16 million from the sale
of producing and non-producing properties in the United States. Offsetting this
gain was a $63 million impairment associated with a write-down of an investment
in a European gas marketing joint venture and employee separation costs of $11
million. Downstream special items in 1996 include a gain of $19 million
associated with the sale of Conoco's retail marketing business in Ireland.
Environmental insurance litigation recoveries also resulted in a $44 million
benefit. Offsetting these benefits were employee separation costs of $11
million.

     Consolidated net income before special items, or "earnings before special
items", was $721 million in 1998, $1,017 million in 1997 and $869 million in
1996.

                                       70
<PAGE>   71

  First Quarter 1999 versus First Quarter 1998

     Conoco had first quarter consolidated net income of $83 million in 1999,
down 74 percent from $316 million in the first quarter of 1998. Conoco had
earnings before special items of $83 million in the first quarter of 1999, down
72 percent from $293 million in the first quarter of 1998. Lower earnings
primarily reflect lower net realized crude oil and natural gas prices, weaker
refined product margins and higher interest expenses related to Conoco's debt
owed to DuPont, partly offset by higher crude oil and natural gas volumes,
higher refinery throughputs and lower exploration costs.

     Sales and other operating revenues for the first quarter of 1999 were
$5,311 million, down seven percent from $5,736 million in the first quarter of
1998, primarily due to lower crude oil and natural gas prices, lower refined
product prices and reduced power trading revenues, all of which were partly
offset by increased production volumes and refinery throughputs. Conoco's
worldwide net realized crude oil price was $11.00 per barrel for the quarter,
down $2.70 per barrel, or 20 percent, from $13.70 per barrel in the first
quarter of 1998. Worldwide net realized natural gas prices averaged $2.08 per
thousand cubic feet for the quarter, compared with $2.64 per thousand cubic feet
in the same period in 1998, a reduction of 21 percent.

     Worldwide crude oil and condensate production in the first quarter of 1999
was 326,000 barrels per day versus 321,000 barrels per day in the first quarter
of 1998, a two percent increase primarily attributable to new production of
condensate from the Britannia field, crude oil from the Banff field and crude
oil from Petrozuata. Worldwide natural gas deliveries in the first quarter of
1999 were up 40 percent to 1,816 million cubic feet per day from 1,298 million
cubic feet per day in the first quarter of 1998. U.S. natural gas deliveries
were up 20 percent, primarily as a result of continued development drilling in
the Lobo field of South Texas. International natural gas deliveries were up 71
percent due to the new production from the Britannia and Viking Phoenix gas
fields in the U.K. Worldwide refined product sales were 1,093,000 barrels per
day, up 12 percent versus 1998. Crude oil and refined product buy/sell and
natural gas and electric power resale activities in the first quarter of 1999
totaled $957 million, down 20 percent compared to $1,200 million in the first
quarter of 1998, primarily due to lower crude oil prices and a reduction in
power trading revenues.

     Cost of goods sold and other operating expenses for the first quarter of
1999 totaled $3,005 million, a decrease of $388 million, or 11 percent, compared
to $3,393 million in the first quarter of 1998, primarily due to the reduction
in power trading activities and lower refinery feedstock costs.

     Exploration expenses for the first quarter of 1999 totaled $46 million, a
decline of $21 million, or 31 percent, compared to $67 million in the first
quarter of 1998, due to lower dry hole costs and lower seismic expenditures.

     Depreciation, depletion and amortization for the first quarter of 1999
totaled $302 million, an increase of $35 million, or 13 percent, compared to
$267 million in the first quarter of 1998, primarily due to increased production
volumes.

  1998 Versus 1997

     Consolidated net income for 1998 of $450 million was down 59 percent from
$1,097 million in 1997. Conoco had earnings before special items of $721 million
in 1998, down 29 percent from $1,017 million in 1997. Lower earnings before
special items primarily reflect lower net realizable crude oil and natural gas
prices and refined product prices. The lower prices were partly offset by higher
natural gas volumes, lower exploration expenses, improved international
downstream marketing margins and the favorable resolution of tax issues.

     Sales and other operating revenues of $22,796 million in 1998 were down 12
percent compared to $25,796 million in 1997, primarily due to a decrease in
worldwide crude oil and natural gas prices and lower refined product prices.
Downstream sales and other operating revenues were $17,246 million, down 14
percent compared to $20,033 million in 1997. Crude oil and refined product
buy/sell and natural gas and electric power resale activities in 1998 totaled
$5,004 million, down 9 percent compared to $5,509 million in 1997.

     Cost of goods sold and other operating expenses in 1998 totaled $13,840
million, down 15 percent compared to $16,226 million in 1997. This reduction is
primarily due to lower feedstock prices.

                                       71
<PAGE>   72

     Selling, general and administrative expenses for 1998 totaled $736 million,
an increase of $10 million, or one percent, compared to $726 million in 1997,
primarily due to environmental litigation charges related to a discontinued
business assumed by Conoco under the separation agreement with DuPont.

     Included in 1998 is a pretax charge of $236 million, labeled "Stock Option
Provision" on the income statement. This expense is a one-time non-cash charge
for employee stock option compensation relating to the replacement of
outstanding DuPont stock options held by Conoco employees with Conoco stock
options in connection with the initial public offering.

     Exploration expenses in 1998 totaled $380 million, a decline of $77
million, or 17 percent, compared to $457 million in 1997. The decrease is
primarily a result of a more focused exploration program. Also contributing to
the decrease were lower amortization of non-producing leasehold properties in
the United States and lower exploration overhead and operating expenses compared
to 1997, which included seismic surveys conducted in the Gulf of Paria, located
between Venezuela and Trinidad, and in the Merida Andes foothills in Venezuela.

     Depreciation, depletion and amortization for 1998 totaled $1,113 million, a
decrease of $66 million, or six percent, compared to $1,179 million in 1997.

     Provision for income taxes for 1998 totaled $244 million, down 76 percent
compared to $1,010 million for 1997. This reflects an effective tax rate of
approximately 35 percent in 1998 compared to 48 percent in 1997. The lower
effective tax rate in 1998 is due to the increased impact of the U.S.
alternative fuels tax credit, realization of a tax benefit on the sale of a
subsidiary and a greater percentage of earnings in countries with lower
effective tax rates.

  1997 versus 1996

     Consolidated net income for 1997 of $1,097 million was up 27 percent from
$863 million in the prior year. Conoco had earnings before special items of
$1,017 million in 1997, up 17 percent from $869 million in 1996. The increase
was attributable to improved U.S. natural gas prices and higher international
natural gas volumes in addition to stronger worldwide downstream product margins
and increased worldwide refinery production.

     Sales and other operating revenues of $25,796 million in 1997 were up six
percent compared to $24,230 million in the prior year, as higher downstream
product prices and volumes, increased international natural gas volumes and
stronger domestic natural gas prices more than compensated for lower crude oil
prices. Crude oil and refined product buy/sell and natural gas and electric
power resale activities in 1997 totaled $5,509 million, up 32 percent compared
to $4,167 million in 1996.

     Cost of goods sold and other operating expenses in 1997 totaled $16,226
million, up 11 percent compared to $14,560 million in 1996, due to higher
refined product volumes and crude oil and refined product buy/sell contract
activity and natural gas and electric power resale activities.

     Selling, general and administrative expenses in 1997 totaled $726 million,
a decrease of $29 million, or four percent, compared to $755 million in 1996,
primarily due to one-time costs in 1996 for retail expansion activities in the
U.S.

     Exploration expenses in 1997 totaled $457 million, an increase of $53
million, or 13 percent, compared to $404 million in 1996, due to higher
international exploration overhead and operating costs primarily from seismic
surveys conducted in the Gulf of Paria, located between Venezuela and Trinidad,
and in the Merida Andes foothills in Venezuela, higher international dry hole
costs and an adjustment of non-producing U.S. leasehold properties.

     Depreciation, depletion and amortization in 1997 totaled $1,179 million, an
increase of $94 million, or nine percent, compared to $1,085 million in 1996 due
to higher depreciation resulting from a write-down of an office building held
for sale in the United Kingdom and an impairment of some international
non-revenue producing properties partially offset by lower depreciation in U.S.
downstream operations.

                                       72
<PAGE>   73

     Provision for income taxes totaled $1,010 million in 1997, down three
percent compared to $1,038 million in 1996. The lower provision reflects an
effective tax rate of approximately 48 percent in 1997 compared to 55 percent in
1996. The decrease in the effective tax rate was primarily due to a lower
proportion of earnings from operations in countries with higher effective tax
rates.

UPSTREAM SEGMENT RESULTS

<TABLE>
<CAPTION>
                                                              THREE MONTHS
                                                                  ENDED           YEAR ENDED
                                                                MARCH 31          DECEMBER 31
                                                              -------------   -------------------
                                                              1999    1998    1998   1997    1996
                                                              -----   -----   ----   -----   ----
                                                                         (IN MILLIONS)
<S>                                                           <C>     <C>     <C>    <C>     <C>
After-Tax Operating Income
  United States.............................................  $ 40    $ 88    $219   $ 445   $314
  International.............................................    68     143     283     439    367
                                                              ----    ----    ----   -----   ----
     After-Tax Operating Income.............................  $108    $231    $502   $ 884   $681
Special Items
  United States.............................................  $ --    $ --    $ 14   $ (49)  $ (9)
  International.............................................    --     (23)    (25)    (98)    67
                                                              ----    ----    ----   -----   ----
     Special Items..........................................    --    $(23)   $(11)  $(147)  $ 58
Earnings Before Special Items
  United States.............................................  $ 40    $ 88    $233   $ 396   $305
  International.............................................    68     120     258     341    434
                                                              ----    ----    ----   -----   ----
     Earnings Before Special Items..........................  $108    $208    $491   $ 737   $739
                                                              ====    ====    ====   =====   ====
</TABLE>

  First Quarter 1999 versus First Quarter 1998

     Upstream earnings before special items were $108 million in the first
quarter of 1999, down 48 percent from $208 million in the first quarter of 1998.
U.S. upstream earnings before special items totaled $40 million in the first
quarter of 1999, down 55 percent from $88 million in the comparable period of
1998. Lower U.S. upstream earnings were due to lower crude oil and natural gas
prices and lower crude oil volumes due to natural declines and sale of various
small, non-strategic properties in 1998. These factors more than offset
increased natural gas production and lower exploration expenses. Natural gas
volumes in the United States were up 20 percent, as production from the South
Texas fields increased more than production declined elsewhere. International
upstream earnings before special items were $68 million, down 43 percent, from
$120 million in the comparable period in 1998, primarily attributable to lower
prices for crude oil and natural gas, partly offset by increased natural gas and
condensate production from the Britannia field.

  1998 versus 1997

     Upstream after-tax operating income was $502 million in 1998, down 43
percent from $884 million in 1997, principally due to lower crude oil and
natural gas prices. Upstream earnings before special items were $491 million in
1998, down 33 percent from $737 million in 1997.

     Conoco's worldwide net realized crude oil price was $12.37 per barrel for
1998, down $6.21 per barrel, or 33 percent, from $18.58 per barrel in 1997.
Excess supply caused by weak Asian demand, higher crude oil production from OPEC
producing countries and warmer winter weather caused the sharp drop in crude oil
prices. Worldwide natural gas prices averaged $2.24 per thousand cubic feet for
1998, compared with $2.44 per thousand cubic feet in 1997, primarily because of
warmer winter weather. Lower worldwide natural gas prices were primarily driven
by lower natural gas prices inside the United States. In the U.S., natural gas
prices averaged $1.96 per thousand cubic feet, down 10 percent, while
internationally they remained steady at $2.72 per thousand cubic feet. Worldwide
crude oil and condensate production in 1998 was 315,000 barrels per day versus
337,000 barrels per day in 1997. Worldwide natural gas production in 1998 was up
17 percent to 1,411 million cubic feet per day from 1,203 million cubic feet per
day in 1997.

                                       73
<PAGE>   74

     U.S. upstream earnings before special items totaled $233 million in 1998,
down 41 percent from $396 million in 1997. Lower U.S. upstream earnings before
special items were due to lower crude oil and natural gas prices and lower crude
oil volumes resulting from asset dispositions and crude oil production declines.
These reductions more than offset benefits from increased natural gas
production, gains on property sales and lower exploration expenses. Natural gas
volumes were up 22 percent as increased production from the holdings in the
South Texas Lobo trend, acquired in 1997, more than offset the decline in
natural gas production elsewhere. U.S. production costs were $3.69 per
barrel-of-oil-equivalent, down $0.54 per barrel-of-oil-equivalent, or 13
percent, compared to $4.23 per barrel-of-oil-equivalent in 1997, due to lower
production taxes and higher gas volumes.

     Outside the United States, upstream earnings before special items were $258
million, down 24 percent, from $341 million in the comparable period in 1997,
primarily due to lower crude oil and natural gas prices, offset by higher
natural gas volumes, lower exploration expenses and the favorable resolution of
some tax issues. International crude volumes, which comprise over 80 percent of
Conoco's oil production, were down five percent to 265,000 barrels per day due
to the sale of Conoco's interest in the mature Ula and Gyda fields in Norway and
natural production declines. However, earnings benefited from higher production
in countries with relatively lower tax rates, primarily the United Kingdom and
Nigeria. International gas volume was up nine percent. International production
costs were $4.13 per barrel-of-oil-equivalent, down $0.06 per
barrel-of-oil-equivalent, or one percent, compared to $4.19 per
barrel-of-oil-equivalent in 1997, due to reduced costs from asset dispositions
and other operating costs in 1998, partly offset by lower international crude
oil production.

  1997 versus 1996

     Upstream after-tax operating income was $884 million in 1997, up 30
percent, compared to $681 million in 1996. Upstream earnings before special
items totaled $737 million in 1997, essentially unchanged from the previous
year.

     Worldwide natural gas prices were up 15 percent to $2.44 per thousand cubic
feet in 1997 from $2.12 per thousand cubic feet in 1996, resulting primarily
from higher U.S. industry demand. Worldwide net realized crude oil prices were
$18.58 per barrel, down $1.53 per barrel, or eight percent, from $20.11 per
barrel in 1996. Crude oil prices declined despite higher crude oil demand and
strong crude oil production growth, which included initial exports of Iraqi
crude oil. Worldwide crude oil and condensate production averaged 337,000
barrels per day for the year, up slightly versus 1996. Worldwide natural gas
deliveries in 1997 of 1,203 million cubic feet per day were essentially
unchanged from 1,211 million cubic feet per day in 1996 as higher international
natural gas volumes were offset by lower domestic natural gas volumes.

     U.S. upstream earnings before special items totaled $396 million, up 30
percent from $305 million in 1996, due to higher gas prices which more than
offset lower crude oil prices. U.S. production costs per barrel-of-oil-
equivalent were $4.23, up $0.12 per barrel-of-oil-equivalent or 3 percent,
compared to $4.11 per barrel-of-oil-equivalent in 1996, due to higher production
taxes.

     Outside the United States, earnings before special items were $341 million,
down 21 percent from $434 million in 1996 due to lower crude oil prices, partly
offset by increased crude oil and natural gas volumes associated with the first
year of oil production from Nigeria and increased production from the Heidrun
and Troll fields in Norway and the Canadian Foothills. International production
costs per barrel-of-oil-equivalent were $4.19 per barrel-of-oil-equivalent, up
$0.51 per barrel-of-oil-equivalent, or 14 percent, compared to $3.68 per
barrel-of-oil-equivalent in 1996, resulting from floating production storage
offtake lease costs on new fields in the United Kingdom and costs incurred on
development projects that had not yet begun production.

                                       74
<PAGE>   75

DOWNSTREAM SEGMENT RESULTS

<TABLE>
<CAPTION>
                                                                 THREE
                                                                MONTHS
                                                                 ENDED
                                                               MARCH 31      YEAR ENDED DECEMBER 31
                                                              -----------   ------------------------
                                                              1999   1998    1998     1997     1996
                                                              ----   ----   ------   ------   ------
                                                                          (IN MILLIONS)
<S>                                                           <C>    <C>    <C>      <C>      <C>
After-Tax Operating Income
  United States.............................................  $17    $34     $135     $216     $172
  International.............................................   23     57      156       91      117
                                                              ---    ---     ----     ----     ----
     After-Tax Operating Income.............................  $40    $91     $291     $307     $289
Special Items
  United States.............................................  $--    $--     $ 73     $ 23     $(36)
  International.............................................   --     --       12       44      (16)
                                                              ---    ---     ----     ----     ----
     Special Items..........................................  $--    $--     $ 85     $ 67     $(52)
Earnings Before Special Items
  United States.............................................  $17    $34     $208     $239     $136
  International.............................................   23     57      168      135      101
                                                              ---    ---     ----     ----     ----
     Earnings Before Special Items..........................  $40    $91     $376     $374     $237
                                                              ===    ===     ====     ====     ====
</TABLE>

  First Quarter 1999 versus First Quarter 1998

     Downstream earnings before special items were $40 million for the first
three months of 1999, down 56 percent from $91 million in the comparable period
in 1998. U.S. downstream earnings before special items were $17 million for the
first three months of 1999, down 50 percent from $34 million for the first three
months of 1998, due to weaker refined product margins, partly offset by higher
refinery volumes. International downstream earnings before special items were
$23 million for the first three months of 1999, down 60 percent from $57 million
in the comparable period in 1998, reflecting significantly lower refinery and
marketing margins that were only partly offset by higher refining volumes.

  1998 versus 1997

     Downstream after-tax operating income was $291 million in 1998, down five
percent compared to $307 million in 1997. Downstream earnings before special
items totaled $376 million in 1998, up one percent from $374 million in 1997.

     United States downstream earnings before special items were $208 million in
1998, compared to $239 million in 1997, a decrease of 13 percent. The decline
was mainly attributable to weaker refinery margins, which were partly offset by
record refinery runs, lower feedstock and operating costs and higher marketing
margins.

     International downstream earnings before special items were $168 million in
1998, up 24 percent from $135 million in the comparable period in 1997,
reflecting higher European marketing margins, lower cost and 11 percent higher
refinery runs.

     Conoco's refineries, excluding the Melaka refinery, operated at 95 percent
capacity in 1998, four percent higher than 1997. The increase was primarily due
to refinery upgrades in Europe in 1997, increased reliability throughout the
system and increased rates at the Lake Charles refinery subsequent to
debottlenecking work completed in February 1998.

  1997 versus 1996

     Downstream after-tax operating income was $307 million, up six percent from
$289 million in 1996. Downstream earnings before special items increased 58
percent to $374 million in 1997, compared with

                                       75
<PAGE>   76

$237 million in the prior year. Worldwide refined product sales volumes were
1,048,000 barrels per day in 1997, up five percent versus 1996.

     In the United States, downstream earnings before special items were $239
million versus $136 million in 1996, an increase of 76 percent. The improvement
was attributable to strong refining margins, reduced operating costs and higher
refined product volumes from the new Lake Charles, Louisiana, hydrocracker
expansion project.

     International downstream earnings before special items were $135 million,
up 34 percent from $101 million in the comparable period in 1996, primarily due
to higher European refining margins and increased refinery production from the
Humber refinery's new vacuum unit in the United Kingdom.

     Conoco's refineries operated at 91 percent capacity in 1997, ten percent
higher than 1996. The increase was primarily due to less downtime incurred in
1997, compared to 1996 when major expansions were taking place at the Lake
Charles and Humber refineries.

CORPORATE AND OTHER SEGMENT RESULTS

  CORPORATE AND OTHER OPERATING

<TABLE>
<CAPTION>
                                                              THREE MONTHS
                                                                  ENDED           YEAR ENDED
                                                                MARCH 31          DECEMBER 31
                                                              -------------   -------------------
                                                              1999    1998    1998    1997   1996
                                                              -----   -----   -----   ----   ----
                                                                         (IN MILLIONS)
<S>                                                           <C>     <C>     <C>     <C>    <C>
After-Tax Operating Income..................................  $(15)   $(20)   $(271)  $(82)  $(74)
Special Items...............................................    --      --      197     --     --
                                                              ----    ----    -----   ----   ----
Earnings Before Special Items...............................  $(15)   $(20)   $ (74)  $(82)  $(74)
                                                              ====    ====    =====   ====   ====
</TABLE>

  First Quarter 1999 versus First Quarter 1998

     Corporate and other operating losses were $15 million for the first quarter
of 1999, improved 25 percent from a loss of $20 million for the comparable
period in 1998, resulting from lower administrative costs.

  1998 versus 1997

     Corporate and other segment after-tax operating income was a loss of $271
million in 1998, an impairment of $189 million from a loss of $82 million in
1997, primarily as a result of the one-time stock option provision. Corporate
and other earnings before special items were a loss of $74 million, an
improvement of $8 million from the 1997 loss of $82 million as a result of lower
compensation costs.

  1997 versus 1996

     Corporate and other segment after-tax operating income was a loss of $82
million, an impairment of $8 million from a loss of $74 million in 1996 due to
higher compensation costs.

  INTEREST AND OTHER NON-OPERATING INCOME (EXPENSES) NET OF TAX

<TABLE>
<CAPTION>
                                                              THREE MONTHS
                                                                  ENDED           YEAR ENDED
                                                                MARCH 31         DECEMBER 31
                                                              -------------   ------------------
                                                              1999    1998    1998   1997   1996
                                                              -----   -----   ----   ----   ----
                                                                        (IN MILLIONS)
<S>                                                           <C>     <C>     <C>    <C>    <C>
Interest Expenses on Debt...................................  $(46)   $ --    (128)   (26)   (50)
Interest Income.............................................     4      19    $ 66   $ 61   $ 78
Exchange Gains (Losses).....................................     2       7      32     21     (7)
Other Corporate Expenses(1).................................   (10)    (12)    (42)   (68)   (54)
                                                              ----    ----    ----   ----   ----
          Total.............................................  $(50)   $ 14    $(72)  $(12)  $(33)
                                                              ====    ====    ====   ====   ====
</TABLE>

- ---------------

(1) Includes other non-operating items.

                                       76
<PAGE>   77

  First Quarter 1999 versus First Quarter 1998

     Interest and other non-operating expenses for the first quarter of 1999
were a loss of $50 million compared to income of $14 million in the comparable
period in 1998, primarily reflecting an increase in interest expense resulting
from separation-related debt to DuPont incurred in the second half of 1998 and
lower interest income.

  1998 versus 1997

     Interest and other non-operating expenses for 1998 were $72 million, an
increase of $60 million versus $12 million in 1997. The increase is primarily
attributable to higher interest expense from debt incurred in the second half of
the year, which more than offset interest income earned in the first half of the
year.

  1997 versus 1996

     Interest and other non-operating expenses were a loss of $12 million in
1997, an improvement of $21 million from 1996 results. Net interest income
(expense) in 1997 was improved by $7 million versus 1996, primarily due to
increased after-tax capitalized interest on major upstream business development
projects. Conoco incurred an after-tax exchange gain of $21 million in 1997
compared with a loss of $7 million in 1996, primarily reflecting the impact of
Norwegian Kroner and British Pound exchange rate movements on U.S.
dollar-denominated working capital balances. Other expenses of $68 million in
1997 were $14 million higher than 1996.

ENVIRONMENTAL EXPENDITURES

     The costs to comply with environmental laws and regulations, as well as
internal voluntary programs, are significant and will continue to be so in the
foreseeable future. Conoco anticipates substantial expenditures will be
necessary to comply with Maximum Achievable Control Technology standards
proposed by EPA under the Clean Air Act and specifications for motor fuels
designed to reduce emissions of some types of pollutants from vehicles using
such fuels.

     Estimated pre-tax environmental expenses charged to current operations
totaled about $131 million in 1998, as compared to approximately $136 million in
1997 and $162 million in 1996. These expenses include the remediation accruals
discussed below, operating, maintenance and depreciation costs for pollution
control facilities and the costs of other environmental activities. The largest
of these expenses resulted from the operation of pollution control facilities.
Approximately 80 percent of 1998 total environmental expenses resulted from the
operations of Conoco's business in the United States.

     Capital expenditures for pollution control facilities totaled approximately
$53 million in 1998, as compared to approximately $50 million in 1997 and $78
million in 1996. Conoco estimates that capital expenditures will increase by
$100 million in 1999 and by an additional $100 million in 2000 primarily due to
regulations in Europe requiring cleaner burning fuels.

  REMEDIATION EXPENDITURES

     The Resource Conservation and Recovery Act extensively regulates the
treatment, storage and disposal of hazardous waste and requires a permit to
conduct such activities. RCRA requires permitted facilities to undertake an
assessment of environmental conditions at the facility. If conditions warrant,
Conoco may be required to remediate contamination caused by prior operations. In
contrast to the Comprehensive Environmental Response, Compensation, and
Liability Act, often referred to as "Superfund," the cost of remediation under
RCRA is typically borne solely by Conoco. Conoco anticipates that significant
ongoing expenditures for RCRA remediation may be required over the next decade,
although Conoco does not expect that annual expenditures for the near term will
vary significantly from the range of such expenditures over the past few years.
Conoco's expenditures associated with RCRA and similar remediation activities
conducted voluntarily or under state law were approximately $27 million in 1998,
$31 million in 1997 and $34 million in 1996. In the long term, expenditures are
subject to considerable uncertainty and may fluctuate significantly.

                                       77
<PAGE>   78

     EPA and state environmental agencies from time to time allege that Conoco
is a potentially responsible party under CERCLA or an equivalent state statute
for contamination at various sites that typically are not owned by Conoco but
allegedly contain wastes attributable to Conoco's past operations. These
agencies and private parties have also sued Conoco on occasion for the recovery
of costs incurred to remediate the contaminated sites. As of December 31, 1998,
Conoco had been notified of potential liability under CERCLA or state law at
about 16 sites in the United States, with active remediation under way at six of
those sites. Conoco received notice of potential liability at three new sites as
of June 15, 1999, one new site during 1998, which was resolved, compared with
four similar notices in 1997 and one in 1996. Conoco's expenditures associated
with CERCLA and similar state remediation activities were not significant in
1998, 1997 or 1996.

     For most Superfund sites, Conoco's costs likely will be significantly less
than the total site remediation costs, because the percentage of waste
attributable to Conoco versus that attributable to all other potentially
responsible parties has been relatively low. Other potentially responsible
parties at sites where Conoco is a party typically have had the financial
strength to meet their obligations and, where they have not, or where
potentially responsible parties could not be located, Conoco's own share of
liability has not materially increased. There are relatively few sites where
Conoco is a major participant, and Conoco does not expect that remediation at
those sites, or at all Superfund sites in the aggregate, will have a material
adverse effect on Conoco's financial condition, results of operation or
liquidity.

     Cash expenditures not charged against income for previously accrued
remediation activities under CERCLA, RCRA and similar state and foreign laws
were $17 million in 1998, $19 million in 1997 and $19 million in 1996. Although
future remediation expenditures in excess of current reserves are possible, the
effect of any such excess on future financial results is not subject to
reasonable estimation because of the considerable uncertainty regarding the cost
and timing of expenditures.

  REMEDIATION ACCRUALS

     Conoco accrues for remediation activities when it is probable that a
liability has been incurred and reasonable estimates of the liability can be
made. These accrued liabilities exclude claims against Conoco's insurers or
other third parties and are not discounted. Many of these liabilities result
from CERCLA, RCRA and similar state laws that require Conoco to investigate and
remediate contamination at sites where it conducts or once conducted operations
or at sites where company-generated waste was disposed. The accrual also
includes a number of sites identified by Conoco that may require environmental
remediation, but which are not currently the subject of CERCLA, RCRA or state
enforcement activities. Over the next decade, Conoco may incur significant costs
under both CERCLA and RCRA. Considerable uncertainty exists with respect to
these costs and under adverse changes in circumstances, potential liability may
exceed amounts accrued as of December 31, 1998.

     Remediation activities vary substantially in duration and cost from site to
site depending on site characteristics, evolving remediation technologies,
diverse regulatory agencies, enforcement policies and the presence of
potentially liable third parties. Therefore, it is difficult to develop
reasonable estimates of future site remediation costs. At December 31, 1998,
Conoco's balance sheet included an accrued liability of $129 million as compared
to $144 million at year-end 1997. Approximately 89 percent of Conoco's
environmental reserve at December 31, 1998, was attributable to RCRA and similar
remediation liabilities and 11 percent to Superfund liabilities. Voluntary
remediations are not included in this reserve. During 1998, remediation accruals
resulted in a $2 million charge, compared to credits of $41 million in 1997 and
$70 million in 1996, both of which resulted from insurance recoveries. No
significant additional recoveries are expected.

TAX MATTERS

     As a result of the separation from DuPont and the initial public offering,
Conoco is no longer able to combine the results of its operations with those of
DuPont in reporting income for U.S. federal income tax purposes and for state
and non-U.S. income tax purposes in some states and foreign countries. Conoco
believes this will not have a material adverse effect on its earnings.

                                       78
<PAGE>   79

     During the period ended March 31, 1999, Conoco's net deferred tax assets
increased primarily as a result of the recognition of $62 million of
carryforwards related to foreign tax credits, alternative fuels tax credits and
the U.S. alternative minimum tax. Conoco believes it is more likely than not
that the additional deferred tax assets related to these foreign tax credits and
alternative fuels tax credits will be realized in the current year. Further,
Conoco believes it is more likely than not that the alternative minimum tax
credits will be realized in future years.

     As of December 31, 1998, Conoco had deferred tax assets in the amount of
$1,238 million. Of this amount, $496 million related to tax benefits from
operating losses incurred in start-up operations, including exploration and U.S.
foreign tax credit carry forwards. These benefits were substantially offset by a
valuation reserve. Conoco believes it is more likely than not that the balance
of the deferred tax assets will be realized in future years.

YEAR 2000

     Historically, many computerized systems have used two digits rather than
four digits to define the applicable year, which could result in recognizing a
date using "00" as the year 1900 rather than the year 2000. This could result in
major failures or miscalculations.

     Conoco recognizes that the impact of the Year 2000 issue extends beyond
traditional computer hardware and software to automated plant systems and
instrumentation, as well as to third parties. The Year 2000 issue is being
addressed within Conoco by its individual business units, and progress is
reported periodically to management and the board of directors.

     Conoco has committed resources to conduct risk assessments and to take
corrective action, where required, within each of the following areas:
information technology, plant systems and external parties. Information
technology includes telecommunications as well as traditional computer software
and hardware in the mainframe, midrange and desktop environments. Plant systems
include all automation and embedded chips used in production, plant,
transportation and marketing facilities. External parties include any third
party with whom Conoco interacts. Most of the resources committed to this work
are internal.

     Managing Year 2000 risk is being handled in three tiers -- through Year
2000 compliance plans, mitigation plans and emergency recovery plans. The Year
2000 compliance plans include inventorying and assessing risk, and outlining
action to be taken for each of these items. Year 2000 compliance plans have been
developed and are being implemented for all business units. Mitigation plans
outline a list of actions that will be taken at specified times to further
minimize risk. These plans are currently being developed for areas in which the
Year 2000 compliance plans may not adequately address all of the relevant risk
issues. For example, Conoco cannot be guaranteed that external partners will be
Year 2000 compliant. Therefore, operations that rely heavily on external
partners will develop mitigation plans. Mitigation plans will be developed, as
needed, for all business units by the end of the third quarter of 1999.

     Emergency recovery plans already exist in many of Conoco's operations to
address other issues such as oil tanker spills and plant explosions. Typically,
the emergency recovery plans address the results of single events. These plans
are designed to facilitate the resumption of normal operations following a
disruption. In contrast to a "normal" disruption, the scope of Year 2000 issues
may cause multiple concurrent events. Accordingly, the emergency recovery plans
will be reviewed and supplemented to address Year 2000 risks for all business
units by the end of the third quarter of 1999. The progress reported below
covers only the replacement or upgrade of existing non-compliant systems.
Replacement projects planned and managed outside of the Year 2000 Program have
been excluded. Approximately 79 percent of the work required to fix Year 2000
issues identified by the Year 2000 Program has been completed.

     In the information technology area, inventory and assessment audits have
been completed. Corrective action in the mainframe and midrange environments
will be completed by the end of the second quarter of 1999, in the
telecommunications and desktop areas by the end of the third quarter of 1999 and
in business application software by the end of the fourth quarter of 1999.

                                       79
<PAGE>   80

     In the plant systems area, all but one of Conoco's business units have
completed their inventory and assessment audits; the remaining unit is expected
to complete this work by the end of the second quarter of 1999. Conoco is
relying on vendor testing of hardware, software and embedded chips, with
certification and validation through limited internal testing and/or industry
test results. Downtime for normally scheduled plant maintenance will be used to
conduct testing, with corrective action expected to be completed by the end of
the third quarter of 1999.

     With respect to external parties, the inventory of critical external
parties is complete. Risks are being assessed and will be addressed in
contingency plans. Monitoring of risk in this area will continue throughout
1999.

     The total cost of Year 2000 activities is not expected to be material to
Conoco's operations, liquidity or capital resources. Costs are being managed
within each business unit. The total estimated cost for Conoco's Year 2000 work
is $46 million. 1997 costs were $5 million, 1998 costs were $25 million and
first quarter 1999 costs were $4 million. This includes costs for the
replacement or upgrade of existing non-compliant systems. Replacement projects
planned and managed outside of the Year 2000 program have been excluded.

     There can be no guarantee that third parties of business importance to
Conoco will successfully reprogram or replace, and test, all of their own
computer hardware, software and process control systems to ensure such systems
are Year 2000 compliant. Failure to address a Year 2000 issue could result in
business disruption that could materially affect Conoco's operations, liquidity
or capital resources. There is still uncertainty around the scope of the Year
2000 issue. At this time Conoco cannot quantify the potential impact of these
failures. Conoco is developing contingency plans to address issues within its
control. The program minimizes, but does not eliminate, the issues of external
parties.

EUROPEAN MONETARY UNION

     Within Europe, the European Economic and Monetary Union introduced a new
currency, the euro, on January 1, 1999. The new currency is in response to the
European Monetary Union's policy of economic convergence to harmonize trade
policy, eliminate business costs associated with currency exchange and to
promote the free flow of capital, goods and services.

     Conoco has undertaken a review of the euro implementation and has
concentrated on areas such as operations, finance, treasury, legal, information
management, procurement and others, both in participating and nonparticipating
European Union countries where Conoco operates. Existing legacy accounting and
business systems and other business assets have been reviewed for euro
compliance. Progress regarding euro implementation is reported periodically to
management. Amounts spent to date and expected to be spent in the future are not
material.

     Because of the staggered introduction of the euro regarding non-cash and
cash transactions, Conoco has developed its plans to address first its
accounting and business systems and second, its business assets. Conoco
undertook steps to be euro compliant within its accounting and business systems
by the end of 1998 relative to the conversion rules when performing translations
between European Monetary Union currencies. The accounting systems were modified
so that European Monetary Union legacy currencies are converted to other
European Monetary Union legacy currencies via the euro rather than directly.
Conoco has an implementation plan to convert its accounting and reporting
systems from legacy currency to the euro by January 1, 2002, for those
operations that are in European Monetary Union countries. The plan also
incorporates steps to ensure the corresponding business assets are fully
compliant by that date, in preparation for being able to conduct business
involving euro notes and coins.

     Consistent with regulations and steps the industry is taking to get the
public familiar with the euro, conversion at retail outlets has already begun.
The conversion program varies between countries, and includes:

  -  displaying conversion tables between European Monetary Union legacy
     currencies and the euro at gasoline stations;

  -  placing stickers on the gasoline pumps with the equivalent euro price per
     liter;

                                       80
<PAGE>   81

  -  installing "euro corners" in the shop part of the station with calculators
     and examples so that customers can practice converting their European
     Monetary Union legacy currency to the euro; and

  -  showing the euro equivalent total at the bottom of receipts issued from
     cash registers.

     The business assets conversion program will continue throughout the
transition period, and in its final stages will include new or modified pole
price signs, electronic euro price displays at the pump, new or modified
automatic cash machines, and receipts which give detailed itemized breakdown in
euros.

     Conoco does not currently expect to experience any significant operational
disruptions or to incur any significant costs, including any currency risk,
which could materially affect its liquidity or capital resources. Conoco is
preparing plans to address issues within the transitional period when both
legacy and euro currencies may be tendered.

     Because of the competitive business environment within the petroleum
industry, Conoco does not anticipate any long-term competitive implications or
the need to materially change its mode of conducting business as a result of
increased price transparency.

RESTRUCTURING

     In December 1998, Conoco announced that as a result of a comprehensive
review of its assets and long-term strategy, Conoco was making organizational
realignments consistent with furthering the efficiency of operations and taking
advantage of synergies created by the upgrading of its asset portfolio. The
announced plans are being implemented in 1999 and will result in a reduction of
approximately 775 upstream positions and 200 downstream positions worldwide.
About three quarters of the upstream positions and about half of the downstream
positions affected will be in the United States. These reductions largely
reflect the elimination of redundancies at all levels resulting from past and
ongoing consolidation of assets into operations requiring less employee support,
as well as better sharing of common services and functions across regions.

     Associated with these announcements, Conoco recorded a charge of $82
million pre-tax, or $52 million after-tax, nearly all of which represents
termination payments and related employee benefits to be made to persons
affected. During the first quarter of 1999, approximately 134 persons in
upstream and 28 persons in downstream left Conoco under implementation of these
realignment plans. The following table shows the status of, and changes to, the
restructuring reserve for the first quarter of 1999.

<TABLE>
<CAPTION>
                                                                 UPSTREAM              DOWNSTREAM
                                                           --------------------   --------------------
                                                           U.S.   INTERNATIONAL   U.S.   INTERNATIONAL   TOTAL
                                                           ----   -------------   ----   -------------   -----
<S>                                                        <C>    <C>             <C>    <C>             <C>
Reserve at December 31, 1998.............................  $31         $36         $8         $7          $82
  Expenditures...........................................   (3)         (1)        --         --           (4)
  New accruals...........................................   --          --         --         --           --
                                                           ---         ---         --         --          ---
Reserve at March 31, 1999................................  $28         $35         $8         $7          $78
                                                           ===         ===         ==         ==          ===
</TABLE>

     Conoco expects the restructuring efforts provided for in December 1998 will
be completed by year-end 1999.

NEW ACCOUNTING STANDARDS

     Effective January 1, 1999, Conoco adopted Statement of Position 98-5,
"Reporting on the Costs of Start-Up Activities," issued by the American
Institute of Certified Public Accountants. This statement requires that costs
related to start-up activities, including organization costs, be expensed as
incurred. Conoco's policy has been one of expensing organization and other
similar costs of start-up operations. Accordingly, Conoco has no cumulative
charge to earnings from a write-off of deferred start-up costs as a result of
adoption of this accounting standard.

     Conoco adopted the Financial Accounting Standards Board's Statement No. 131
"Disclosures About Segments of an Enterprise and Related Activities." for the
year ended December 31, 1998, and has disclosed segment information on the same
basis used internally for evaluating segment performance and deciding how to

                                       81
<PAGE>   82

allocate resources to segments. Conoco has assessed the effect of the new
disclosure, and adoption of Statement No. 131 had no financial impact.

     In February 1998, the Financial Accounting Standards Board issued Statement
No. 132, "Employers' Disclosure About Pension and Other Postretirement
Benefits," which revised disclosure requirements for pension and other
postretirement benefits. It does not affect the measurement of the expense of
Conoco's pension and other postretirement benefits. Conoco adopted this
Statement for the year ended December 31, 1998.

     In June 1998, the Financial Accounting Standards Board issued Statement No.
133, "Accounting for Derivative Instruments and Hedging Activities," which
requires that companies recognize all derivatives as either assets or
liabilities in the balance sheet and measure those instruments at fair value.
Statement No. 133 provides, if specified conditions are met, that a derivative
may be specifically designated as:

  -  a hedge of the exposure to changes in the fair value of a recognized asset
     or liability or an unrecognized firm commitment;

  -  a hedge of the exposure to variable cash flows of a forecasted transaction;
     or

  -  a hedge of the foreign currency exposure of a net investment in a foreign
     operation, an unrecognized firm commitment, an available-for-sale security
     or a foreign-currency-denominated forecasted transaction.

     Under Statement No. 133, the accounting for changes in fair value of a
derivative depends on its intended use and designation. For a fair value hedge,
the gain or loss is recognized in earnings in the period of change together with
the offsetting loss or gain on the hedged item. For a cash flow hedge, the
effective portion of the derivative's gain or loss is initially reported as a
component of other comprehensive income and subsequently reclassified into
earnings when the forecasted transaction affects earnings. For a foreign
currency hedge, the gain or loss is reported in other comprehensive income as
part of the cumulative translation adjustment. For all other items not
designated as hedging instruments, the gain or loss is recognized in earnings in
the period of change.

MARKET RISKS

     Conoco operates in the worldwide crude oil, refined product, natural gas,
natural gas liquids and electric power markets and is exposed to fluctuations in
hydrocarbon prices, electric power prices, foreign currency rates, and interest
rates that can affect the revenues and cost of operating, investing and
financing. Conoco's management has used and intends to use financial and
commodity-based derivative contracts to reduce the risk in overall earnings and
cash flow when the benefits provided are anticipated to more than offset the
risk management costs involved.

     Conoco has established a financial risk management policy framework that
provides guidelines for entering into contractual arrangements to manage
Conoco's commodity price, foreign currency rate, and interest rate risks. The
Conoco risk management committee has ongoing responsibility for the content of
this policy and has principal oversight responsibility to ensure Conoco is in
compliance with the policy and that procedures and controls are in place for the
use of commodity, foreign currency and interest rate instruments. These
procedures clearly establish derivative control and valuation processes, routine
monitoring and reporting requirements and counterparty credit approval
procedures. Additionally, Conoco's internal audit group conducts reviews of
these risk management activities to assess the adequacy of internal controls.
The audit results are reviewed by the Conoco risk management committee and by
management.

     The counterparties to these contractual arrangements are limited to major
financial institutions and other established companies in the petroleum
industry. Although Conoco is exposed to credit loss in the event of
nonperformance by these counterparties, this exposure is managed through credit
approvals, limits and monitoring procedures, and limits to the period over which
unpaid balances are allowed to accumulate. Conoco has not experienced
nonperformance by counterparties to these contracts, and no material loss would
be expected from any such nonperformance.

                                       82
<PAGE>   83

  Commodity Price Risk

     Conoco enters into energy-related futures, forwards, swaps and options in
various markets to balance its physical systems, to meet customer needs and to
manage its price exposure on anticipated crude oil, natural gas, refined product
and electric power transactions. These instruments provide a natural extension
of the underlying cash market and are used to physically acquire a portion of
supply requirements as well as to manage pricing of near term physical
requirements. The commodity futures market has underlying principles of
increased liquidity and longer trading periods than the cash market and is one
method of managing price risk in the energy business.

     Conoco policy is to generally be exposed to market pricing for commodity
purchases and sales. From time to time, management may use derivatives to
establish longer-term positions to hedge the price risk for Conoco's equity
crude oil and natural gas production as well as refinery margins.

     Under Conoco's policy, hedging includes only those transactions that offset
physical positions and reduce overall company exposure to price risk. Trading is
defined as any transaction that does not meet the definition of hedging. Much of
the portfolio is reported in the trading category and, thereby, receives
mark-to-market accounting. As a consequence, current revenues and costs reflect
the full effect of price movement on most of Conoco's trading activity. Those
activities that qualify as hedges use deferral accounting.

                                       83
<PAGE>   84

     The fair value gain (loss) of outstanding derivative commodity instruments
and the change in fair value that would be expected from a ten percent adverse
price change are shown in the table below:

<TABLE>
<CAPTION>
                                                                           CHANGE IN FAIR VALUE
                                                                             FROM 10% ADVERSE
                                                              FAIR VALUE       PRICE CHANGE
                                                              ----------   --------------------
                                                                        (IN MILLIONS)
<S>                                                           <C>          <C>
AT MARCH 31, 1999
Crude Oil and Refined Products
  Hedging...................................................     $ (2)             $ (1)
  Trading...................................................       24                (3)
                                                                 ----              ----
  Combined..................................................     $ 22              $ (4)
Natural Gas
  Hedging...................................................     $ (5)             $(16)
  Trading...................................................       --                 1
                                                                 ----              ----
  Combined..................................................     $ (5)             $(15)
AT DECEMBER 31, 1998
Crude Oil and Refined Products
  Hedging...................................................     $ (1)             $ (5)
  Trading...................................................        3                 3
                                                                 ----              ----
  Combined..................................................     $  2              $ (2)
Natural Gas
  Hedging...................................................     $(25)             $(20)
  Trading...................................................       (2)               (1)
                                                                 ----              ----
  Combined..................................................     $(27)             $(21)
AT DECEMBER 31, 1997
Crude Oil and Refined Products
  Hedging...................................................     $ (3)             $ (8)
  Trading...................................................       (6)              (18)
                                                                 ----              ----
  Combined..................................................     $ (9)             $(26)
Natural Gas
  Hedging...................................................     $  8              $ (9)
  Trading...................................................       --                --
                                                                 ----              ----
  Combined..................................................     $  8              $ (9)
</TABLE>

     The fair values of the futures contracts are based on quoted market prices
obtained from the New York Mercantile Exchange or the International Petroleum
Exchange of London. The fair values of swaps and other over-the-counter
instruments are estimated based on quoted market prices of comparable contracts
and approximate the gain or loss that would have been realized if the contracts
had been closed out at the end of the reporting period.

     All hedge positions offset physical positions exposed to the cash market;
none of these offsetting physical positions is included in the above table.

     Price-risk sensitivities were calculated by assuming an across-the-board
ten percent adverse change in prices regardless of term or historical
relationships between the contractual price of the instrument and the underlying
commodity price. In the event of an actual ten percent change in prompt month
crude or natural gas prices, the fair value of Conoco's derivative portfolio
would typically change less than that shown in the table due to lower volatility
in out-month prices.

     Additional details regarding accounting policy for these financial
instruments are set forth in note 2 to Conoco's consolidated financial
statements.

                                       84
<PAGE>   85

  Foreign Currency Risk

     Conoco has foreign currency exchange rate risk resulting from operations in
approximately 40 countries around the world. Conoco does not comprehensively
hedge its exposure to currency rate changes, although it may choose to
selectively hedge exposure to foreign currency exchange rate risk. Examples
include firm commitments for capital projects, some local currency tax payments,
and cash returns from net investments in foreign affiliates to be remitted
within the coming year. At March 31, 1999 and at December 31, 1998, Conoco had
no open forward exchange contracts. At December 31, 1997, Conoco had open
forward exchange contracts designated as a hedge of firm foreign currency
commitments. The notional amount of these contracts was $50 million and the
estimated fair value was $38 million.

  Interest Rate Risk

     Prior to the initial public offering, Conoco had no significant interest
rate risk to manage. In March 1999, Conoco hedged interest rate exposure on a
portion of the public debt that was issued in April 1999. The hedge was
accomplished by purchasing put options on U.S. Treasury securities with a
maturity date matching the expected pricing date of the debt offering and having
a total notional amount of $2.5 billion spread over five-year, ten-year and
30-year maturities proportional to the expected tranches of Conoco debt to be
issued. Fair value of the put options at March 31, 1999 was $7 million. In April
1999, subsequent to purchasing the put options, U.S. Treasury interest rates
decreased and the put options expired out of the money. Before the public debt
issuance, Conoco entered into interest rate lock agreements proportional to the
expected tranches of debt to be issued. Overall, the two hedging transactions
resulted in an immaterial net gain that will be amortized against interest
expense over the life of the various debt maturities.

                                       85
<PAGE>   86

                               BUSINESS OF DUPONT

GENERAL

     DuPont is a world leader in science and technology in a range of
disciplines, including high-performance materials, specialty chemicals,
pharmaceuticals and biotechnology. DuPont has a portfolio of 2,000 trademarks
and brands, including such well-known consumer brands as Lycra(R), Teflon(R),
Stainmaster(R), Kevlar(R), Nomex(R), Tyvek(R), Dacron(R), Cordura(R), Corian(R),
SilverStone(R), and Mylar(R). DuPont operates 200 manufacturing and processing
facilities in 65 countries worldwide.

     DuPont presents its results in eight reportable segments -- Agriculture &
Nutrition, Nylon Enterprise, Performance Coating & Polymers, Pharmaceuticals,
Pigments & Chemicals, Polyester Enterprise, Specialty Fibers, and Specialty
Polymers. The balance of DuPont's continuing operations is reported in an Other
segment and consists of DuPont's photomasks safety resources and global services
businesses. DuPont also has petroleum operations conducted through Conoco, which
are reported in DuPont's financial statements as discontinued operations. DuPont
expects the petroleum business will be divested from DuPont's operations if the
exchange offer is completed. DuPont and its subsidiaries, excluding Conoco,
employ approximately 92,000 people worldwide and have annual revenues of
approximately $25 billion.

REPORTABLE SEGMENTS

  AGRICULTURE & NUTRITION

     DuPont's agriculture & nutrition business consists of crop protection
products and the newly formed nutrition & health business. The agriculture &
nutrition business had revenues of approximately $3.2 billion in 1998. Crop
protection products includes herbicides, fungicides, and insect control sold
worldwide.

     DuPont formed its nutrition & health business in 1998 to increase its
strong position in biotechnology across high value opportunities in animal
feeds, food ingredients, nutritional sciences and biosourced industrial
materials. Nutrition & health consists of both business and research development
efforts in agriculture, food and nutrition.

     On March 15, 1999 DuPont agreed to effect a business combination with
Pioneer Hi-Bred International, Inc., the world's largest seed company, in a
stock and cash merger valued at approximately $7.7 billion. DuPont currently has
a 20 percent equity interest in Pioneer, as well as joint venture and other
arrangements with Pioneer. The merger is expected to close during the summer of
1999. For further details, see footnote 1 to "Unaudited Pro Forma Consolidated
Financial Statements of DuPont."

     DuPont recently announced plans to improve the profitability of its crop
protection business and to better position the business for future growth in the
face of very competitive market conditions. Plans include consolidating
manufacturing capacity and refocusing research and development and marketing
activities toward the successful introduction of three new products and
achieving synergies with Pioneer. DuPont intends to eliminate approximately 800
jobs or about 15 percent of the crop protection global workforce. Estimated
annual pre-tax savings of approximately $200 million are expected to begin
accruing in the fourth quarter of 1999. Potential asset write-offs are under
review. A nonrecurring charge related to these measures is expected to be
recorded in the third quarter, 1999.

  NYLON ENTERPRISE

     DuPont's nylon enterprise business consists of nylon intermediates,
polymers and fibers for carpet and rug markets, apparel, tire reinforcement and
numerous other industrial applications. DuPont nylon had revenues of
approximately $4.6 billion in 1998 and includes the brands Stainmaster(R) and
Antron(R) fibers for carpets and Tactel(R) and Supplex(R) yarns for apparel. In
1998, DuPont completed investments to reduce emissions of nitrous oxide by more
than 90 percent at the five nylon sites worldwide that produce adipic acid, a
nylon intermediate chemical.

                                       86
<PAGE>   87

  PERFORMANCE COATINGS & POLYMERS

     DuPont's performance coatings & polymers business manufactures and markets
engineering materials for automotive, electrical, electronic, consumer and
industrial applications. The automotive and electrical/electronics industries
are its largest markets. The performance coatings & polymers business had
revenues of approximately $4.6 billion in 1998. Polymers, commonly known as
plastics, are large molecules formed by combining many smaller molecules in a
regular pattern. The business unit supplies six families of engineering
resins -- Zytel(R) nylon, Delrin(R) acetal, Rynite(R) polyester PET, Crastin(R)
polyester PBT, Hytrel(R) thermoplastic elastomer and Zenite(TM) liquid crystal
polymer-plus Vespel(R) polymide parts and shapes, Tribon composites and Tynex(R)
filaments. DuPont performance coatings are used in automotive original equipment
coatings, automotive refinish and industrial coatings, and high-performance
coatings.

     In March 1999, DuPont acquired Herberts GmbH, the coating business of
Hoechst AG, for about $1.8 billion. Herberts is the market leader in automotive
coatings in Europe with strong positions in the industrial coatings markets and
markets for emerging ultra-low emission powder coatings. The acquisition is
intended to add significant opportunities to increase worldwide market
penetration of powder and industrial coatings. Combined, the companies comprise
the world's third largest coatings company and are the leading automotive
coatings supplier with sales of about $4 billion.

     Based on business integration studies following the Herberts acquisition,
DuPont has recently announced plans to consolidate its coatings manufacturing
facilities and reorganize other business activities by April 2000. Under the
plan, subject to government notification requirements and country labor laws,
DuPont's performance coatings business will shift production from six of its 46
coatings facilities and business staff will be consolidated at other locations,
affecting approximately 1,300 of its 15,000 total employee work force. Costs
incurred as a result of these actions largely will be included in the purchase
accounting for the Herberts acquisition, and therefore, will not result in a
material charge to 1999 earnings.

  PHARMACEUTICALS

     DuPont pharmaceuticals focuses on research, development and delivery of
pharmaceuticals to treat HIV, cardiovascular disease, central nervous system
disorders, cancer and arthritis-related disorders. It is also a leader in
medical imaging. The pharmaceuticals business had revenues of approximately $1.1
billion in 1998. Pharmaceutical products include Sustiva(TM) for AIDS,
Coumadin(R) anticoagulant, Cozaar(R) for hypertension, Sinemet(R) for
Parkinson's disease, Symmetrol(R) antiviral and antiparkinsons, Cardilite(R)
cardiac imaging agents, and Neurolite(R) brain-imaging agents.

     DuPont purchased Merck & Co. Inc.'s 50 percent interest in The DuPont Merck
Pharmaceutical Company in July 1998 for $2.6 billion. DuPont now owns 100
percent of the business, which operates as DuPont Pharmaceuticals.

  PIGMENTS & CHEMICALS

     DuPont's pigments & chemicals business manufactures and distributes a wide
range of commodity and specialty products, including titanium dioxide,
fluorochemicals and specialty chemicals used in the construction, oil and gas,
precious metal mining, transportation, paper, plastics, chemical processing,
refrigeration, textile and safety and environmental management industries. The
pigments & chemicals business had revenues of approximately $3.7 billion in
1998.

     The pigments & chemicals business is the world's leading producer of
titanium dioxide, commonly referred to as white pigment, which imparts
whiteness, brightness and opacity to paper, paint and plastic. The
fluorochemicals segment of the pigments & chemicals business produces a wide
range of alternatives to chlorofluorocarbons, including refrigerants, foam
expansion agents, propellants and cleaning agents. The specialty chemicals
segment of the pigments & chemicals business produces a wide variety of
specialties, intermediates and industrial chemicals.

                                       87
<PAGE>   88

  POLYESTER ENTERPRISE

     DuPont's polyester enterprise includes DuPont Dacron(R) polyester,
high-performance polyester films and polyester resins and intermediates. The
polyester business had revenues of approximately $2.8 billion in 1998. DuPont's
polyester business produces polyester staples and fibers for apparel, home
furnishings, sleepwear, outdoor products, and transportation markets. DuPont's
Dacron(R) polyester includes the brands CoolMax(R) and ThermaStat(R)performance
fabrics, Comforel(R) sleep products, Thermolite(R) insulations,
Micromattique(TM) microfibers and the newest introduction, Supriva(TM) fabric.

     The polyester business also includes specialty, industrial, packaging,
electrical and electronics markets. Brand names include Melinex(R), Mylar(R),
Kaladex(R), and Cronar(R). Polyester resins and intermediates are used in soft
drink bottles and custom containers, as well as applications for packaging and
cups, thermoforms and shrink wrap film.

     DuPont recently announced measures designed to improve the profitability of
its polyester business. Under the plan, polyester production capacity will be
better aligned to meet current market needs, some obsolete assets will be
permanently curtailed and the organizations will be streamlined to increase
competitiveness. The restructuring will result in the elimination of
approximately 800 DuPont positions and 600 contractor positions globally or
about 14 percent of the global polyester business work force.

  SPECIALTY FIBERS

     DuPont's speciality fibers business consists of DuPont Lycra(R) brand
elastane, nonwoven fibers and advanced fiber systems. The specialty fiber
business had revenues of approximately $3.3 billion in 1998. DuPont sells
Lycra(R) in its traditional markets of intimate apparel, swimwear, hosiery and
activewear as well as in new markets such as menswear, childrenswear, socks,
sweater knits, denims, wovens and shoes. Nonwoven products include Tyvek(R)
brand products, as well as Typar(R) and Sontara(R). Advanced fibers are
Kevlar(R) brand fiber, Nomex(R) brand fiber and paper, and Teflon(R) brand
fluropolymer fiber. Advanced fiber products are used in sporting goods and
sporting shoes.

  SPECIALTY POLYMERS

     DuPont's specialty polymers includes photopolymer & electronic materials,
packaging & industrial polymers, fluropolymers, and DuPont Corian(R). The
specialty polymers business had revenues of approximately $4.1 billion in 1998.
The photopolymer & electronic materials business markets photoresists, laminates
and photoimageable technology for the printed, flexible and microcircuit
segments of the electronics industry. It also markets flexographic printing
plates and color proofing systems for the printing industry. The packaging &
industrial polymers business offers specialized, high-value polymers in
packaging and selected industrial markets.

     The trademarks of fluropolymers include Teflon(R) and Tefzel(R)
fluropolymers, and SilverStone(R) and Autograph(R) non-stick finishes while
DuPont Corian(R) is used in building materials.

RECENT DEVELOPMENTS

     On March 10, 1999, DuPont announced the proposed creation of a tracking
stock for its life sciences businesses, which would be issued to all of its
stockholders. The amendment of DuPont's certificate of incorporation to create
this tracking stock, which is intended to provide investors an opportunity to
invest in a security the terms of which more closely track the economic
performance of DuPont's life sciences businesses, must be approved by DuPont
stockholders. After the issuance of the tracking stock, the existing DuPont
common stock is expected to more closely mirror the performance of its materials
businesses. DuPont anticipates that stockholder approval will be sought in the
first quarter of 2000.

     In February 1999, the Clinton administration proposed changes to the
federal income tax laws, as part of its budget package, that, if enacted, could
adversely affect the tax consequences relating to the issuance of tracking stock
and, as a result, could adversely affect DuPont's ability to issue the tracking
stock for its life sciences businesses. It is presently unclear whether this
proposal will be enacted into law and, if so, what form it would take. In the
event that the tracking stock proposal is not implemented, DuPont is unable to
estimate what effect, if any, this would have on the trading price of DuPont
common stock.
                                       88
<PAGE>   89

                               BUSINESS OF CONOCO

GENERAL

     Conoco, a major, integrated, global energy company, is involved in both the
upstream and downstream operating segments of the petroleum industry. Upstream
activities include exploring for, and developing, producing and selling crude
oil, natural gas and natural gas liquids. Downstream activities include refining
crude oil and other feedstocks into petroleum products, buying and selling crude
oil and refined products and transporting, distributing and marketing petroleum
products. In addition to upstream and downstream operations, Conoco also is
engaged in developing and operating power facilities. Conoco operates in
approximately 40 countries worldwide.

     As of December 31, 1998, Conoco had proved worldwide reserves of 2,622
million barrels-of-oil-equivalent, 39 percent of which were natural gas. Based
on 1998 annual production of 213 million barrels-of-oil-equivalent, excluding
natural gas liquids from gas plant ownership, Conoco had a reserve life of 12.3
years as of December 31, 1998. Over the last five years, Conoco has replaced an
average of 195 percent of the oil and gas it has produced each year. Conoco owns
or has equity interests in nine refineries worldwide, with a total crude and
condensate processing capacity of approximately 807,000 barrels per day. Conoco
has a marketing network of approximately 7,900 outlets in the United States,
Europe and Asia.

     Based on public filings, for the year ended December 31, 1998, Conoco
ranked eighth in the worldwide production of petroleum liquids by U.S.-based
companies, eleventh in the production of natural gas, and eighth in refining
throughput. For that same period, Conoco reported net income of $450 million,
which included a net charge for special items of $271 million, on total revenues
of $23,168 million. For the first quarter of 1999, Conoco had net income of $83
million, on total revenues of $5.3 billion.

BUSINESS STRATEGY

     Conoco intends to pursue a growth-oriented business strategy by exploiting
opportunities where Conoco has existing major areas of operation, creating at
least two new major business areas in northern South America and the Caribbean,
and one of the Asia Pacific, West Africa, Middle East or Russia/Caspian Sea
regions, and continuing to improve the profitability, efficiency and
effectiveness of its existing operations. Specifically, Conoco intends to:

     - manage its portfolio to increase the proportion of upstream assets
       relative to downstream assets and the proportion of large-scale,
       long-lived, early-life cycle assets relative to mature assets, which
       could include forming joint ventures or alliances to optimize the
       efficiency of operations or monetize a portion of the value of such
       assets;

     - achieve significant near-term production growth through large scale
       projects such as Petrozuata, Britannia, Lobo and Ursa;

     - seek opportunities created by worldwide privatizations and the opening of
       new markets previously closed to private investment;

     - apply its strengths in carbon upgrading, project management, deepwater
       technology, natural gas processing, seismic processing and
       interpretation, and in the ability to present integrated upstream/
       downstream solutions to host governments and other institutions in new
       and emerging markets;

     - pursue exploration activities that have significant value creation
       potential by concentrating on areas that are under-explored;

     - capitalize on its ability to convert low cost, heavy, high sulfur and
       acidic crude oils into high value light oil products; and

     - continuously rationalize its asset base, contain costs, optimize its
       investment portfolio, and improve operating reliability.

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<PAGE>   90

     In all of its activities, Conoco will strive to act in accordance with its
core values of operating safely, protecting the environment, acting ethically
and valuing all people.

CONOCO HISTORY

     Conoco was founded in 1875 in Ogden, Utah, as the Continental Oil and
Transportation Company. In 1885, it was reincorporated with a new name,
Continental Oil Company, as part of the nationwide Standard Oil Trust. In its
early years, its principal operations were marketing oil and petroleum related
products, primarily in the Rocky Mountain area and in California. In 1913, two
years after the U.S. Supreme Court dissolved the Standard Oil Trust, Conoco was
again independently incorporated. From 1913 to 1929, Conoco evolved into a fully
integrated oil company, with operations in most states west of the Mississippi
River.

     By 1929, Conoco had approximately 1,800 producing wells and had become one
of the largest retailers of gasoline in the Rocky Mountain area. In that year,
it merged with the Marland Oil Company, an oil and gas company with wells and
marketing operations from Oklahoma to Maryland. After World War II, Conoco was
an early participant in Gulf of Mexico exploration and production activities and
moved aggressively overseas with upstream assets in many parts of the world and
downstream assets in Western Europe. In 1981, Conoco was acquired by DuPont.

FINANCIAL INFORMATION -- OPERATING SEGMENT AND GEOGRAPHIC INFORMATION

     See note 27 to the consolidated financial statements of Conoco for
operating segment and geographic information.

UPSTREAM

  SUMMARY

     Conoco is currently exploring for, developing or producing crude oil,
natural gas and/or natural gas liquids in 17 countries around the world. In
1998, production averaged 583,000 barrels-of-oil-equivalent per day, consisting
of 348,000 barrels per day of petroleum liquids, excluding natural gas liquids
from gas plant ownership, and 1,411 million cubic feet of natural gas per day.
The majority of this production came from fields located in the United States,
the United Kingdom and Norway, with the remaining production coming from
operations in Canada, the United Arab Emirates, Indonesia, Nigeria, Russia and
Venezuela.

     In 1998, Conoco replaced nearly 110 percent of the oil and natural gas it
produced, adding 234 million barrels-of-oil-equivalent to Conoco's worldwide
reserves while producing 213 million barrels-of-oil-equivalent, excluding
natural gas liquids from gas plant ownership, for a net addition of 21 million
barrels-of-oil-equivalent. This marks the sixth consecutive year that Conoco has
replaced more reserves than it produced. Conoco replaced 163 percent of the
natural gas produced and 74 percent of the oil produced. On December 31, 1998,
Conoco had proved reserves of 2,622 million barrels-of-oil-equivalent,
consisting of 1,591 million barrels of petroleum liquids and 6,183 billion cubic
feet of natural gas, representing an increase of 48 percent on a barrel-
of-oil-equivalent basis since December 31, 1994.

     Conoco's capital investment in upstream activities in 1998 was $1,965
million, including the continued development of the Lobo trend, Britannia, Ursa
and Petrozuata. These projects will contribute to Conoco's 1999 production and
significantly increase Conoco's production rates over current levels in future
years.

     The majority of Conoco's exploration and production assets are located in
the United States and Canada, the United Kingdom and Norway. The producing
properties in these areas generate cash to fund growth opportunities around the
world. Outside of North America and Western Europe, Conoco's investment
activities are focused on areas that have the potential to become major business
areas in the future, such as northern South America and the Caribbean, and the
Asia Pacific, West Africa, Middle East and Russia/Caspian Sea regions.

     Conoco is exploring for oil and/or natural gas in 14 countries. Since 1996,
Conoco has pursued and continues to implement an exploration strategy focused on
acquiring large acreage positions in areas that are

                                       90
<PAGE>   91

relatively under-explored. The purpose of these acreage acquisitions has been to
establish Conoco at an early stage in areas that have the potential for large
discoveries. During the same period, Conoco acquired significant acreage
positions in the following regions:

     - the deepwater Gulf of Mexico;

     - the Atlantic Margin of Northwest Europe;

     - northern South America;

     - the Caribbean; and

     - selected basins in the Asia Pacific region.

Conoco's global deepwater acreage position is the largest in the industry. In
1998, Conoco's exploratory success rate was its best in 15 years. Approximately
30 percent of the exploratory wells Conoco drilled, excluding appraisal wells,
were potentially commercial.

     Conoco intends to manage its asset portfolio to increase the proportion of
upstream assets relative to downstream assets and the proportion of large-scale,
long-lived, early-life cycle assets relative to mature assets. In the course of
implementing such strategy, Conoco has in the past, and may from time to time in
the future, purchase or sell upstream assets. Conoco may also consider forming
alliances or joint ventures to hold and operate selected upstream assets, either
to optimize the efficiency of such operations through achieving economies of
scale or to monetize a portion of the value of such assets.

     The following table sets forth information regarding Conoco's producing
properties. This table includes crude oil, condensate, and natural gas liquids
expected to be removed for Conoco's account from its natural gas production.

<TABLE>
<CAPTION>
                                                                        PROVED RESERVES
                                                                       AS OF DECEMBER 31,        1998
                                                                              1998            PRODUCTION
                                                  NATURE OF INTEREST        (MMBOE)         (MBOE PER DAY)
                                                  ------------------   ------------------   --------------
<S>                                               <C>                  <C>                  <C>
REGION
UNITED STATES
  Lobo..........................................       Lease                   162                70
  Gulf of Mexico................................       Lease                    80                28
  San Juan Basin................................       Lease                   185                53
  Permian Basin.................................       Lease                   133                31
  Central Appalachian Basin.....................    Partnership                 63                 2
  Other.........................................                                88                43
                                                                             -----               ---
          Total United States...................                               711               227
WESTERN EUROPE
  Britannia.....................................      License                  242                18
  Heidrun.......................................      License                  146                39
  Statfjord.....................................      License                  100                54
  Troll.........................................      License                  114                 9
  Other.........................................                               317               111
                                                                             -----               ---
          Total Western Europe..................                               919               231
NORTHERN SOUTH AMERICA AND THE CARIBBEAN
  Petrozuata....................................   Equity Company              678                 5
OTHER...........................................                               314               120
                                                                             -----               ---
          Total.................................                             2,622               583
                                                                             =====               ===
</TABLE>

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<PAGE>   92

  UNITED STATES

     Production operations in the United States are principally located in the
following areas:

     - the Lobo trend in South Texas;

     - the Gulf of Mexico;

     - the San Juan Basin in New Mexico;

     - the Permian Basin in West Texas; and

     - the Central Appalachian Basin in Virginia.

In 1998, United States operations contributed approximately 23 percent of
Conoco's worldwide petroleum liquids production and 63 percent of its worldwide
natural gas production. Proved reserves as of December 31, 1998, were 711
million barrels-of-oil-equivalent, consisting of 261 million barrels of
petroleum liquids and 2,700 billion cubic feet of natural gas.

     In recent years, Conoco has consolidated its exploration and production
operations in the United States in order to increase profitability. Conoco sold
hundreds of smaller, less efficient properties, while acquiring an increased
interest in its largest producing areas such as the San Juan Basin and the Lobo
trend. As a result, Conoco has reduced the number of fields in its portfolio
from approximately 700 in 1990 to 104 as of December 31, 1998, while maintaining
production essentially constant on a barrel-of-oil-equivalent basis. Conoco has
also focused its exploration activities by reducing the number of exploration
plays being pursued in the United States from over 30 in 1995 to less than ten
as of December 31, 1998. Exploration activity in the United States is
concentrated in the deepwater Gulf of Mexico.

     Conoco's objectives are to increase production from the Lobo trend and the
deepwater Gulf of Mexico, while maintaining production from other United States
assets and focusing on natural gas processing capabilities.

  Lobo Trend in South Texas

     Conoco is the largest natural gas producer in the Lobo trend, and a leading
producer, marketer and transporter of natural gas in South Texas. Conoco has 20
years of operating and drilling experience in the Lobo trend and currently holds
approximately 450,000 acres in the area under oil and gas leases. In 1997, in
accordance with its strategy to rapidly increase production through
participation in large development projects, Conoco substantially increased its
holdings in South Texas through the acquisition of $929 million of natural gas
properties and transportation assets. Assets acquired by Conoco in this
transaction included approximately 215,000 acres of leases, 800 wells and a
1,150-mile natural gas gathering and transportation pipeline. The pipeline
provides direct access to major Texas intrastate and interstate pipeline
systems. As a result of the Lobo acquisition, Conoco is currently the second
largest natural gas producer in Texas.

     Conoco's average working interest in its leases in the Lobo trend is 92
percent. A large number of the producing wells acquired in the Lobo acquisition
were acquired subject to volumetric production payments. The holders of these
production payments are entitled to a specific volume of production from these
wells until the last of the production payments terminates in 2002. These
volumes averaged approximately 91 million cubic feet per day in 1998.

     Since the 1997 acquisition of Lobo properties, Conoco has maintained
between two and 14 rigs working continuously in the region. As of May 1, 1999,
Conoco had seven rigs working. This development activity has resulted in an
increase in gross natural gas production in the region from approximately 510
million cubic feet per day for December 1997 to approximately 750 million cubic
feet per day for December 1998, an increase of approximately 47 percent. Conoco
anticipates spending $600 million between 1999 and 2002 to further develop its
leases in the Lobo trend. Conoco's 1998 Lobo trend development program included
the acquisition of new 3D seismic data and the drilling of over 200 wells.

     As of June 1999, Conoco had completed 3-D seismic surveys on 90 percent of
its total acreage holdings in the Lobo trend, and drilled over 330 wells since
mid-year 1997. As a result of the progression of the seismic interpretations and
recent higher gas prices, Conoco intends to gradually increase the number of
drilling rigs

                                       92
<PAGE>   93

during the balance of this year, with the objective of maintaining lower per
well drilling costs at increasing levels of activity. To date during 1999,
drilling and completion costs have been reduced approximately 10 percent on a
per well basis compared to 1998 and operating costs have been reduced by
approximately 10 percent on a unit of production basis compared to 1998.

     Lobo Pipeline Company, a wholly owned subsidiary of Conoco, owns a 1,150
mile intrastate natural gas pipeline system in South Texas and expects to
implement an expansion plan designed to provide transportation for Conoco's gas
production and that of third party producers, laying 100 miles of pipeline per
year for the next five years. During the first two years, most of the pipeline
added will be high-pressure trunklines to support regional development.

  Gulf of Mexico

     Conoco's current portfolio of producing properties in the Gulf of Mexico
includes ten fields operated by Conoco and 14 operated by other companies. The
properties are in various stages of development, ranging from properties that
are fully developed to ones with considerable additional development potential.
Conoco also holds interests in various offshore platforms, pipelines and other
infrastructure.

     Conoco currently has 13 leases in production or under development in the
deepwater Gulf of Mexico. Conoco's most important current development project in
the Gulf of Mexico is the Ursa field development. Ursa, operated by Shell, is
one of the largest discoveries to date in the deepwater Gulf of Mexico. Conoco
holds a 16 percent interest in the field, and the other owners are Shell, BP
Amoco and Exxon. The Ursa tension leg platform was installed in late 1998 in
approximately 3,900 feet of water. Initial production from Ursa began four
months ahead of schedule in March 1999, and Conoco projects that peak gross
production from the Ursa field will reach 150,000 barrels per day of petroleum
liquids and 400 million cubic feet of gas per day by 2001.

     Conoco's most important exploration program in the United States is in the
deepwater Gulf of Mexico. Conoco is the seventh largest deepwater leaseholder in
the Gulf on an acreage basis, with interests in 295 leases. Conoco has a 100
percent interest in 104 of these leases, and jointly owns 76 of the remaining
leases on a 50-50 basis with Shell and 60 of the remaining leases on a 50-50
basis with Exxon. Since 1996, Conoco has acquired 3D seismic data over large
portions of the deepwater Gulf of Mexico to identify acreage to lease and to
select prospects for drilling. Seismic interpretation is now underway on many
leases and preparations for a multi-well drilling program are being made.

     Conoco will carry out its deepwater Gulf of Mexico drilling program in
large part with a recently completed deepwater drillship, which is owned by a
joint venture between Conoco and R&B Falcon Corporation. This vessel, christened
the Deepwater Pathfinder, went into service in January 1999, commencing a
five-year, $400 million drilling program in the Gulf of Mexico. This highly
sophisticated drillship is capable of drilling in water depths of up to 10,000
feet and provides Conoco with the ability to explore in areas that were
previously inaccessible. In May 1999, Conoco announced a discovery on the
Magnolia prospect on Garden Banks Block 783, the first prospect drilled by the
Deepwater Pathfinder. Conoco is currently evaluating the results of the
discovery. The Deepwater Pathfinder is currently drilling another prospect in
Green Canyon Block 562.

  Other U.S. Producing Properties

     Outside of South Texas and the Gulf of Mexico, Conoco's largest producing
properties in the United States are located in the San Juan Basin of New Mexico,
the Permian Basin in West Texas and the Central Appalachian Basin in Virginia.
Conoco also has producing properties in the Williston Basin and the Hugoton
complex in the Oklahoma/Texas Panhandle.

     Conoco has a significant acreage position in the San Juan Basin. Conoco's
average daily net production from the San Juan Basin in 1998 was approximately
15,500 barrels of petroleum liquids and 226 million cubic feet of natural gas.
Conoco believes significant additional hydrocarbons lie below the basin's
traditional producing formations, and Conoco is actively exploring for new
reserves. In 1998, Conoco conducted a 300-square-mile 3D seismic survey covering
the most promising deep areas of the basin. Early results have identified
several high-potential prospects, and two wells are planned to be drilled in
1999. Conoco will also continue to

                                       93
<PAGE>   94

consider potential acquisitions in this basin to take advantage of synergies
resulting from its large asset base and gas plant in the area.

     Conoco has an interest in 29 fields in the Permian Basin, which is one of
the largest producing areas in the United States. In the Permian Basin, Conoco's
average daily net production in 1998 was approximately 23,500 barrels of
petroleum liquids and approximately 44 million cubic feet of gas. Conoco is
using 3D seismic technology, horizontal wells and other innovative extraction
technologies in an effort to extend the productive life of many of the mature
fields in the Permian Basin.

     Pocahontas Gas Partnership is a 50/50 partnership between Conoco and Consol
Energy Inc. Pocahontas produces and gathers coal bed methane prior to and during
coal mining operations in Virginia. Pocahontas produced and gathered
approximately 34 million gross cubic feet per day of coal bed methane from the
existing active mining area in 1998. Conoco recently approved an expansion of
the Pocahontas project to develop coal bed methane outside of the existing
mining area, which is expected to increase total Pocahontas production to
approximately 40 million gross cubic feet per day in 1999.

  NATURAL GAS AND GAS PRODUCTS

     In the United States, Conoco owns interests in 23 natural gas processing
plants located in Louisiana, New Mexico, Oklahoma and Texas as well as
approximately 10,000 miles of gathering lines. Conoco operates 16 of the plants.

     Conoco gathers natural gas, extracts natural gas liquids and sells the
remaining residual gas. Most of Conoco's raw gas liquids are supplied to its
processing operations, which further separate them into natural gas liquid
products that are used as feedstocks for gasoline and chemicals production.
Conoco provides service to approximately 800 natural gas producers and sells
more than 500 million cubic feet per day of residue gas to approximately 120
customers.

     Conoco's share of total natural gas liquids from natural gas processed at
the 23 plants in which it owns an interest averaged 66,300 barrels per day in
1998, of which approximately 11,000 barrels per day of natural gas liquids were
from Conoco owned reserves, which were reported, net of royalties, as United
States natural gas liquids production. In 1998, approximately 28,200 barrels per
day of additional natural gas liquids were attributable to processing of
Conoco's natural gas liquids in third-party-operated plants. Furthermore,
Conoco's 50 percent-owned equity affiliate, C&L Processors Partnership, has five
natural gas processing plants in Oklahoma and Texas. Conoco's pro rata share of
C&L's natural gas liquids production was approximately 7,600 barrels per day in
1998.

     Conoco's other natural gas and gas products facilities in the United States
include:

     - Lobo Pipeline Company's 1,150-mile intrastate natural gas pipeline system
       in South Texas;

     - an 800-mile intrastate natural gas pipeline system in Louisiana operated
       by Conoco's wholly owned subsidiary, Louisiana Gas System, Inc.;

     - natural gas and natural gas liquids pipelines in several other states;

     - three underground natural gas liquids storage facilities;

     - a natural gas liquids fractionating plant in Gallup, New Mexico with a
       capacity of 25,000 barrels per day; and

     - a 22.5 percent equity interest in Gulf Coast Fractionators, which owns a
       natural gas liquids fractionating plant in Mt. Belvieu, Texas with a
       capacity of 104,000 barrels per day.

In 1998 Conoco sold approximately 3.3 billion cubic feet per day of natural gas,
which included 873 million cubic feet per day of its U.S. natural gas
production.

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<PAGE>   95

  WESTERN EUROPE

     Conoco has a significant portfolio of producing properties in the United
Kingdom and Norway. Proved Western Europe reserves, as of December 31, 1998,
were 919 million barrels-of-oil-equivalent, consisting of 410 million barrels of
petroleum liquids and 3,053 billion cubic feet of natural gas. In 1998,
operations in Western Europe contributed 44 percent of Conoco's worldwide
petroleum liquids production and 33 percent of its natural gas production.

  Britannia Field

     Conoco has a 42.4 percent interest in the Britannia field, which is one of
the largest natural gas/ condensate fields in the United Kingdom sector of the
North Sea. Britannia is a centerpiece of Conoco's strategy to increase
production and reserves through large, long-lived projects. First production
from Britannia occurred in August 1998 and Conoco estimates that the field will
have a production life of approximately 30 years. Conoco's proved reserves in
Britannia include 1.1 trillion cubic feet of natural gas and 56 million barrels
of petroleum liquids at December 31, 1998. As of June 8, 1999, Britannia was
producing 740 million gross cubic feet of gas per day and 50,000 gross barrels
of petroleum liquids. Production is expected to fluctuate due to seasonal
demand. Conoco and Chevron, the two largest interest holders in the field,
jointly operate Britannia.

  Southern North Sea Producing Properties

     Conoco has various equity interests in 13 producing gas fields in the
Southern North Sea, a major gas producing area on the United Kingdom continental
shelf. These fields mostly feed into the Conoco-operated Theddlethorpe gas
processing facility through three Conoco-operated pipeline systems: Viking,
LOGGS and CMS. In 1998, Conoco's net production from the Southern North Sea was
98 billion cubic feet of natural gas.

     Conoco believes there are additional development opportunities in the
Southern North Sea. One example is the Viking Phoenix project, in which Conoco
targeted the development of additional reserves using existing infrastructure
and new drilling and completion technology. In November 1998, Conoco started
production from this development, for which its proved reserves were 73 billion
cubic feet of gas as of December 31, 1998. Conoco holds a 50 percent interest in
the Viking Field. In June 1999, Conoco announced a discovery on the E-Plus
exploration well in the Southern North Sea. This well is near existing Conoco
infrastructure in the Viking field and Conoco is currently evaluating the
commercial potential of the discovery.

     At year-end 1998, Conoco acquired Canadian Petroleum UK Ltd., the British
subsidiary of Canadian Occidental Petroleum Ltd. The acquisition included:

     - interests in the Vulcan (7.9 percent), South Valiant (12.5 percent), and
       Caister (30 percent) gas producing fields;

     - a 15 percent interest in the Caister Murdoch gas pipeline;

     - a ten percent interest in the Eagles gas pipeline; and

     - interests in eight exploration blocks.

As a result of this acquisition, Conoco increased its interest in the Vulcan and
South Valiant Fields to 50 percent from 42.1 percent and 37.5 percent, and
increased its stake in the Caister Murdoch gas pipeline to 42.25 percent. Conoco
currently operates the Vulcan and South Valiant fields.

  Other United Kingdom Properties and Discoveries

     Conoco also has interests in the following fields and discoveries:

     - Miller (30 percent);

     - Alba (12 percent);

     - Statfjord (4.8 percent in the United Kingdom/10.3 percent in the
       Norwegian sector);
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<PAGE>   96

     - MacCulloch (40 percent);

     - Banff (32 percent); and

     - Clair (21 percent).

Conoco operates the MacCulloch and Banff fields, both of which employ floating
production, storage and offtake technology. BP Amoco operates the Miller field
and the Clair discovery, which is one of the largest undeveloped oil discoveries
in Western Europe.

  Interconnector Pipeline and Gas Sales

     The Interconnector pipeline, which connects the United Kingdom and Belgium,
will facilitate marketing throughout Europe of the natural gas Conoco produces
in the United Kingdom. This pipeline commenced operation in October 1998.
Conoco's ten percent share of the Interconnector pipeline allows Conoco to ship
approximately 200 million cubic feet of gas per day to the markets in
continental Europe. Conoco has seven- to ten-year contracts to supply natural
gas to Gasunie in the Netherlands and Wingas in Germany, which fully utilizes
this capacity. Because the Interconnector pipeline provides flexibility to flow
in either direction, Conoco will be able to take advantage of the long-term and
short-term market conditions in both the United Kingdom and continental Europe.

  Norwegian Producing Fields

     Conoco is the sixth largest oil producer in Norway. Conoco has an ownership
interest in three of the largest fields in the country: Heidrun, Statfjord and
Troll. Conoco also has an interest in the following discoveries which are in
development:

     - Oseberg South (7.7 percent);

     - Visund (9.1 percent);

     - Jotun (3.75 percent); and

     - Huldra (23.3 percent).

Conoco also has an interest in the PL 203 discovery.

     Production from the Heidrun field began in 1995 and is currently averaging
approximately 240,000 gross barrels of petroleum liquids per day. Conoco's share
of the proved reserves in the field, based on its 18.125 percent interest, is
119 million barrels of petroleum liquids and 159 billion cubic feet of natural
gas. Conoco was the operator for the construction and installation of Heidrun's
tension leg platform. Upon first production, Statoil assumed operatorship in
accordance with a pre-agreed arrangement. Associated gas from the Heidrun field
currently serves as feedstock for a methanol plant that became operational in
Norway in 1997. The plant, in which Conoco holds an 18.125 percent interest, is
operated by Statoil.

     Conoco, which holds 10.3 and 4.8 percent interests in the Norwegian and
United Kingdom sectors of the Statfjord field, had total net proved reserves for
both the Norwegian and United Kingdom sectors of 84 million barrels of petroleum
liquids and 98 billion cubic feet of natural gas in the field as of December 31,
1998. Conoco is supporting work by Statoil, the operator of Statfjord, to
determine ways to slow the natural decline of the field and increase reserves.
Conoco also owns a 1.66 percent interest in the Troll gas field, operated by
Statoil, and has net proved reserves in the field of 576 billion cubic feet of
natural gas and 18 million barrels of petroleum liquids.

  Exploration -- The Atlantic Margin

     Exploration activity in Western Europe is focused on the deepwater Atlantic
Margin fairway, which runs from the Voring Basin off the coast of Norway to the
Porcupine Basin off the west coast of Ireland. Along the Atlantic Margin, Conoco
has significant acreage positions in the Voring Basin, the West of Shetlands and
North Rockall Trough areas in the United Kingdom and the Porcupine Basin. In
1997, the United Kingdom

                                       96
<PAGE>   97

government awarded Conoco and three partners exploration licenses for two
deepwater blocks, Block 204/14 and 204/15, in the West of Shetlands area. These
blocks are adjacent to a discovery in BP Amoco-operated Block 204/19. Conoco, as
operator of Blocks 204/14 and 204/15, drilled two wells in 1998 to test the
potential of this acreage. The results of the wells are being currently
evaluated by Conoco and its partners.

  NORTHERN SOUTH AMERICA AND THE CARIBBEAN

  Petrozuata

     Petrozuata is a key component of Conoco's strategy to increase production
and reserves through implementation of long-lived, large development projects
and to utilize its proprietary coking technology in other areas of its business.
Petrozuata is a joint venture between Conoco, which holds a 50.1 percent
non-controlling equity interest, and PDVSA Petroleo y Gas S.A., a subsidiary of
PDVSA, the national oil company of the Republic of Venezuela, which holds the
remaining interest.

     Petrozuata, the first venture of its kind in Venezuela, is developing an
integrated operation to produce extra heavy crude oil from known reserves in the
Zuata region of the Orinoco Belt, transport it to the Jose industrial complex on
the north coast of Venezuela and upgrade it into synthetic crude, with
associated by-products of liquified petroleum gas, sulfur, petroleum coke and
heavy gas oil, a product slightly lighter than residual oil. Petrozuata's
synthetic crude is a lighter, partially processed refining feedstock similar to
crude oil. Conoco's recorded proved reserves related to its interest in
Petrozuata as of December 31, 1998, were 678 million barrels of oil. The joint
venture agreement has a 35-year term, commencing upon the completion of the
upgrading facility in 2000, and requires approval of both Conoco and PDVSA
Petroleo y Gas S.A. for major Petrozuata decisions.

     The upgrading facility, which will employ Conoco's proprietary delayed
coking technology, will be located at Jose and is projected to become
operational in mid-2000. Diluted extra heavy crude oil will be transported via a
36-inch pipeline from the field to the Jose industrial complex. An adjacent
20-inch pipeline will return naphtha from the upgrading facility to the field
for use as a diluent. Petrozuata has also begun construction of field processing
and support facilities and marine facilities for shipping synthetic crude and
by-products.

     As of May 31, 1999, Petrozuata has made significant progress toward project
completion. The upgrading facility is now approximately two-thirds complete and
most of the key process units have been installed. The dual pipeline system is
fully operational and early production and diluent volumes are currently being
shipped between Jose and the field. Production facilities are now substantially
complete and drilling of production wells continues. Current extra heavy oil
production is approximately 61,000 barrels per day. While many wells are
producing at expected rates, on average, individual well productivity has been
less than expected. As a result, Petrozuata will drill more wells than
anticipated in the original plans for the project. Due to drilling efficiencies,
Petrozuata is experiencing lower than expected per well drilling costs which
will mitigate the cost of the additional wells. Additionally, Conoco expects
that use of multi-lateral well technology will increase the per well producing
capability above current levels. Conoco expects Petrozuata to produce 120,000
barrels per day of extra heavy crude oil required for the planned start-up of
the upgrading facility in mid-2000.

     Petrozuata began early production of extra heavy crude oil in August 1998.
Prior to completion of the upgrading facility, the extra heavy crude will be
blended with lighter oils and sold on world markets. Following completion of the
upgrading facility, the synthetic crude produced by Petrozuata will either be
used as a feedstock for Conoco's Lake Charles refinery and a refinery operated
by PDVSA, or will be sold to third parties.

     Conoco has entered into an agreement to purchase up to 104,000 barrels per
day of the Petrozuata synthetic crude for a formula price over the term of the
joint venture if Petrozuata is unable to sell the production to third parties
for higher prices. All synthetic crude sales will be denominated in United
States dollars. By-products produced by the upgrading facility, principally coke
and sulfur, will be sold to a variety of domestic and foreign purchasers. The
loading facilities at Jose will transfer synthetic crude and some of the by-
products to ocean tankers for export. Synthetic crude sales are expected to
comprise more than 90 percent of the project's revenues.

                                       97
<PAGE>   98

  The La Luna Trend

     Exploration activity in northern South America and the Caribbean is focused
on a geologic trend known as La Luna. In Venezuela, Conoco conducted seismic
surveys in 1997 on the shallow water Gulf of Paria West block, and on the
Guanare block in the Merida Andes foothills. In early 1999, Conoco drilled a
well in the Gulf of Paria West, which is a potentially commercial discovery that
flowed hydrocarbons from multiple zones in drill stem tests. Conoco is currently
drilling a second well on an adjacent structure. Conoco also drilled a well in
the Guanare block, which was a dry hole. Additional exploration and appraisal
work is currently planned for 1999. Conoco currently holds a 50 percent working
interest in both the Gulf of Paria West block, which it operates, and the
Guanare block, which is operated by Elf Aquitane. Conoco's interest in each case
is subject to dilution to 32.5 percent at the option of a PDVSA affiliate.

     In northwestern Colombia, seismic surveys have been completed in
partnership with Texaco on three tracts that Conoco acquired through a 50
percent farm-in. In 1998, Texaco drilled two dry holes on the acreage and plans
to drill two additional wells in 1999. In addition, Conoco and Texaco acquired a
fourth tract in a joint bid in 1998.

     In 1997, Conoco signed a production sharing contract for Blocks 4a and 4b,
two large prospective blocks off Trinidad's east coast. A 3D seismic survey was
acquired over the acreage in 1997, and Conoco is currently drilling a well to
test the potential of this acreage. Conoco is operator of both blocks and has a
50 percent working interest; Texaco holds the remaining working interest in both
blocks.

     Seeking additional opportunities in the La Luna Trend, Conoco has conducted
a two-year study of the hydrocarbon potential of the entire offshore Barbados
area. Encouraged by the study, Conoco has entered into a commitment to acquire
seismic data over 50 percent of the original study area and has the option to
enter a drilling program to test the potential of this largely unexplored area.

  Phoenix Park

     Conoco holds a 39 percent equity interest in Phoenix Park Gas Processors
Limited, a joint venture with the National Gas Company of Trinidad and Tobago
Limited, that processes gas in Trinidad and markets in the eastern Caribbean.
Phoenix Park's facilities include:

     - a gas processing plant;

     - a fractionator producing propane, mixed butane and natural gasoline;

     - storage tanks; and

     - a liquified petroleum gas marine loading dock.

These facilities produce over 11,000 gross barrels per day of natural gas
liquids. Phoenix Park recently completed an expansion of its facilities to
process up to 1.4 billion cubic feet of gas per day, increase fractionation
capacity to 33,000 barrels per day, and add additional storage and marine export
facilities.

  ASIA PACIFIC

     Conoco has a 30-year operating history in Indonesia. The focus of Conoco's
effort in the Asia Pacific region is its operations in the Indonesian sector of
the Natuna Sea. In this area, Conoco is the operator of the Block B and North
West Natuna Sea Block II production sharing contracts. Conoco also has interests
in exploration blocks in Cambodia, Vietnam and New Zealand, where the second
deepwater drillship owned by a joint venture between Conoco and R&B Falcon, the
Deepwater Frontier, recently completed drilling its first exploratory well. The
well did not encounter commercial hydrocarbons.

  West Natuna Gas Project

     In 1996, Conoco, as operator of the South Natuna Sea Block B PSC, along
with the other participants in Block B and the interest holders in the Block A
and Kakap production sharing contracts, formed the "West Natuna Group", with the
aim of jointly marketing gas from the West Natuna Area to Singapore. In January
1999, the West Natuna Group, Pertamina, the Indonesian state-owned oil and gas
company and Sembgas, a
                                       98
<PAGE>   99

company owned by Sembcorp Industries, entered into a definitive set of
agreements to sell the gas to Temasek and Tracetebel. These agreements provide
for the sale and purchase of natural gas from specified fields in the production
sharing contracts operated by the West Natuna Group.

     These agreements provide for gas deliveries to begin by mid-2001 that will
rise to a sales rate of 325 million cubic feet per day. Sembgas will sell the
gas to a series of end users, including Tuas Power, Sembcorp Cogen and Esso
Chemicals, which will use the gas for industrial purposes, primarily power
generation. The West Natuna Group has entered into a gas supply agreement with
Pertamina in which they have undertaken to develop a series of fields and to
supply the gas produced to Pertamina for the sale to Sembgas. The agreements
provide for the supply of approximately one trillion cubic feet of natural gas
from fields in Block B to Sembgas. Block B's share of production will reach 140
million cubic feet of gas daily. Block B constitutes 43.1 percent of the West
Natuna Group and Conoco owns a 40 percent interest in Block B and has net proved
reserves of 197 billion cubic feet of natural gas. Conoco plans to drill five
wells in Block B in 1999 to begin development of these reserves. In addition,
each of the production sharing contracts has been extended to allow the West
Natuna Group to support Pertamina for the expected 22 year life of the contract
with Sembgas.

     A 300-mile 28-inch submarine pipeline and smaller gathering pipelines will
be built by the West Natuna Group to transport the gas from the West Natuna Sea
fields to Singapore. Conoco will be the operator of the pipeline system,
including the receiving terminal in Singapore. The West Natuna Group, Pertamina
and Sembgas have entered into contracts governing the construction and operation
of the pipeline. Contracts for engineering, procurement, construction and
installation of the pipeline and platform based gas processing equipment were
recently awarded and approved by Pertamina.

     Two delineation wells recently drilled by Conoco, the West Belut #2 and the
Belut #5, further delineated a natural gas discovery made by Conoco in 1998. The
Belut Complex is not dedicated to the West Natuna Group gas sales agreement, but
Conoco believes production from this area could be used to meet increased
Singaporean gas demand, and fill excess pipeline capacity, in the future.

  Belida and Sembilang Fields, Indonesia

     Conoco holds a 40 percent interest in and serves as operator of the Belida
and Sembilang oil fields in the Block B PSC. An ongoing infill drilling program
in the Belida Field maintained gross production for the Indonesian fields in the
range of 85,000 barrels per day in 1998.

  CANADIAN ROCKIES

     Conoco has had significant exploration success in the 1990's in the
foothills east of the Canadian Rockies. In this area, Conoco has an interest in
209,000 net acres, much of which has yet to be developed. Development plans for
1999/2000 include bringing on-stream two more of the foothills discoveries. In
addition to the discoveries in the foothills trend, Conoco has a significant
interest in the Peco Gas Field, located just east of the foothills. Conoco also
owns 100 percent of the Peco gas processing plant, which processes gas from the
Peco Field and two of the foothills discoveries.

  RUSSIA

     Conoco holds a 50 percent direct and a 4.7 percent indirect ownership
interest in Polar Lights Company, a Russian limited liability company
established in January 1992. Polar Lights, the first Russian-Western joint
venture to develop a major new oil field, was established to develop the Ardalin
oil field discovered in 1988 by the Russian state enterprise GP
Arkhangelskgeologia. Ardalin is located in the Arctic tundra approximately 1,000
miles northeast of Moscow. As of December 31, 1998, Conoco's share of proved
reserves was 42 million barrels of petroleum liquids, with an additional eight
million barrels of net proved reserves at the adjacent oil fields -- Kolva and
Dusushev. Polar Lights started producing oil in August 1994 and gross production
increased from an average 21,000 barrels per day in 1994 to an average 35,000
barrels per day in 1998. Average production during May 1999 reached a record
40,200 barrels per day. Oil is transported through the existing Russian pipeline
system and is then exported or sold on the domestic market.
                                       99
<PAGE>   100

     In March 1998, Conoco signed a memorandum of understanding with OAO Lukoil,
Russia's largest oil company, to jointly study the development of petroleum
reserves in the 1.2 million acre block known as the Northern Territories in the
Timan-Pechora region in northern Russia, which includes the large undeveloped
Yuzhno Khilchuyu oil field. The memorandum of understanding followed Lukoil's
purchase in December 1997 of a majority interest in OAO Arkhangelskgeoldobycha,
successor to GP Arkhangelskgeologia and Conoco's original partner in the
Northern Territories. In November 1998, Conoco and Lukoil signed a second
memorandum of understanding to work together to draw up and submit all documents
required by the Russian government to develop the Northern Territories under
production sharing agreement terms, to secure funding for the project and to
work together to resolve other outstanding issues.

     In July 1998, Conoco acquired a 15.667 percent interest in OAO
Arkhangelskgeoldobycha for approximately $33 million. OAO Arkhangelskgeoldobycha
owns a 30 percent interest in Polar Lights.

  WEST AFRICA

     In 1997, Conoco, in partnership with Express Petroleum and Gas Company Ltd.
of Nigeria, announced the production of first oil from the shallow water
Ukpokiti field, located offshore in the western Niger delta. Conoco currently
has a 90 percent revenue interest in the field. Total production from the field
is currently 20,000 barrels per day of oil, and Conoco's net proved reserves as
of December 31, 1998 were 13.2 million barrels of oil. Express operates
Ukpokiti, and Conoco provides technical and operational assistance in the
field's development, which included three remote caisson-type structures, five
wells, and the conversion of the Conoco tanker "Independence" into a floating
production and storage offtake vessel. With a 1.7 million barrel storage
capacity, the vessel also serves as an export terminal.

     In addition to its interest in the Ukpokiti field, Conoco has a 47.5
percent working interest in the deepwater OPL 220 license off the coast of
Nigeria, which is operated by Conoco and encompasses 600,000 acres. Conoco has
acquired a 3D seismic survey and drilled two wells on this license. The first
well, which was drilled in 1997, found only gas and was non-commercial. The
second well was drilled in 1998 and encountered both oil and gas-filled sands.
Conoco and its partner, Exxon, are currently evaluating results from this second
well.

  MIDDLE EAST

     In Dubai, United Arab Emirates, Conoco has operated four fields since their
discovery between 1966 and 1973. Currently, Conoco is using horizontal drilling
techniques and advanced reservoir drainage technology to enhance the efficiency
of the offshore production operations and improve recovery rates.

  OIL AND NATURAL GAS RESERVES

     Conoco's estimated proved reserves at December 31, 1998 were 2,622 million
barrels-of-oil-equivalent, consisting of 1,591 million barrels of oil and 6,183
billion cubic feet of natural gas.

     Oil and gas proved reserves cannot be measured precisely. The reserve data
set forth in this report is only an estimate. Reservoir engineering is a
subjective and inexact process of estimating underground accumulations of oil
and natural gas. Reserve estimates are based on many factors related to
reservoir performance which require evaluation by engineers interpreting the
available data, as well as price and other economic factors. The reliability of
these estimates at any point in time depends on both the quality and quantity of
the technical and economic data, the production performance of the reservoirs as
well as extensive engineering judgment. Consequently, reserve estimates are
subject to revision as additional data become available during the producing
life of a reservoir. When a commercial reservoir is discovered, proved reserves
are initially determined based on limited data from the first well or wells.
Subsequent data may better define the extent of the reservoir and additional
production performance. Well tests and engineering studies will likely improve
the reliability of the reserve estimate.

     At lower prices for crude oil and natural gas, it may no longer be economic
to produce reserves that are more expensive to produce. Actual production,
revenues and expenditures with respect to Conoco's reserves will likely vary
from estimates, and such variances may be material.

                                       100
<PAGE>   101

     The following table sets forth by region Conoco's proved oil reserves at
year-end for the past five years. Proved oil reserves comprise crude oil,
condensate and natural gas liquids expected to be removed for Conoco's account
from its natural gas production.

<TABLE>
<CAPTION>
                                                                         DECEMBER 31
                                                              ----------------------------------
                                                              1998    1997    1996   1995   1994
                                                              -----   -----   ----   ----   ----
                                                                    (MILLIONS OF BARRELS)
<S>                                                           <C>     <C>     <C>    <C>    <C>
PROVED OIL RESERVES
CONSOLIDATED COMPANIES
United States...............................................    261     277   299    294    336
Europe......................................................    410     421   413    408    394
Other Regions...............................................    192     195   214    231    223
                                                              -----   -----   ---    ---    ---
  Worldwide.................................................    863     893   926    933    953
SHARE OF EQUITY AFFILIATES
Europe......................................................     50      51    47     44     35
Other Regions(1)............................................    678     680    --     --     --
                                                              -----   -----   ---    ---    ---
          Total Proved Oil Reserves.........................  1,591   1,624   973    977    988
                                                              =====   =====   ===    ===    ===
</TABLE>

- ---------------

(1) Represents Conoco's equity share of the Petrozuata venture in Venezuela.

     The following table sets forth by region Conoco's proved natural gas
reserves at year-end for the past five years:

<TABLE>
<CAPTION>
                                                                           DECEMBER 31
                                                              -------------------------------------
                                                              1998    1997    1996    1995    1994
                                                              -----   -----   -----   -----   -----
                                                                    (BILLIONS OF CUBIC FEET)
<S>                                                           <C>     <C>     <C>     <C>     <C>
PROVED NATURAL GAS RESERVES
CONSOLIDATED COMPANIES
United States...............................................  2,319   2,235   1,822   1,891   1,749
Europe......................................................  3,053   3,060   3,068   2,649   2,431
Other Regions...............................................    430     196     173     169     150
                                                              -----   -----   -----   -----   -----
  Worldwide.................................................  5,802   5,491   5,063   4,709   4,330
SHARE OF EQUITY AFFILIATES
United States...............................................    381     370     333     339     344
                                                              -----   -----   -----   -----   -----
          Total Proved Natural Gas Reserves.................  6,183   5,861   5,396   5,048   4,674
                                                              =====   =====   =====   =====   =====
</TABLE>

  PRODUCTION DATA

     Conoco's oil and natural gas production, excluding natural gas liquids from
gas plant ownership, averaged 583,000 barrels-of-oil-equivalent per day in 1998,
compared with 575,000 barrels-of-oil-equivalent per day in 1997. As a percentage
of total production, natural gas production was 40 percent and 35 percent in
1998 and 1997.

                                       101
<PAGE>   102

     The table below shows Conoco's interests in average daily oil production
and natural gas production for the past three years. Oil production comprises
crude oil and condensate produced for Conoco's account, plus its share of
natural gas liquids removed from natural gas production from owned leases.
Natural gas production represents Conoco's share of production from leases in
which it has an ownership interest. Natural gas liquids processed represents
Conoco's share of natural gas liquids acquired through gas plant ownership.

<TABLE>
<CAPTION>
                                                              1998     1997     1996
                                                              ----     ----     ----
                                                              (THOUSANDS OF BARRELS
                                                                     PER DAY)
<S>                                                           <C>      <C>      <C>
NET AVERAGE DAILY OIL PRODUCTION
  CONSOLIDATED COMPANIES
     United States..........................................   79       90       91
     Europe.................................................  152      176      182
     Other Regions..........................................   95       92       88
                                                              ---      ---      ---
          Total Net Production -- Consolidated Companies....  326      358      361
  SHARE OF EQUITY AFFILIATES
     Europe.................................................   17       16       13
     Other Regions..........................................    5       --       --
                                                              ---      ---      ---
          Total Net Production -- Equity Affiliates.........   22       16       13
                                                              ---      ---      ---
          Total Net Oil Production Per Day..................  348      374      374
                                                              ===      ===      ===
</TABLE>

<TABLE>
<CAPTION>
                                                               1998     1997     1996
                                                              ------   ------   ------
                                                              (MILLIONS OF CUBIC FEET
                                                                      PER DAY)
<S>                                                           <C>      <C>      <C>
NET AVERAGE DAILY NATURAL GAS PRODUCTION
  CONSOLIDATED COMPANIES
     United States..........................................    873      709      738
     Europe.................................................    470      432      416
     Other Regions..........................................     53       46       41
                                                              -----    -----    -----
          Total Net Production -- Consolidated Companies....  1,396    1,187    1,195
  SHARE OF EQUITY AFFILIATES
     United States..........................................     15       16       16
                                                              -----    -----    -----
          Total Net Natural Gas Production Per Day..........  1,411    1,203    1,211
                                                              =====    =====    =====
</TABLE>

<TABLE>
<CAPTION>
                                                              1998    1997    1996
                                                              -----   -----   -----
                                                              (THOUSANDS OF BARRELS
                                                                    PER DAY)
<S>                                                           <C>     <C>     <C>
NET AVERAGE DAILY NATURAL GAS LIQUIDS PROCESSED
  CONSOLIDATED COMPANIES
     United States(1).......................................     55      55      58
  SHARE OF EQUITY AFFILIATES
     United States..........................................      8       8       8
     Other Regions..........................................      4       5       5
                                                              -----   -----   -----
          Total Net Processed -- Equity Affiliates..........     12      13      13
                                                              -----   -----   -----
          Total Net Natural Gas Liquids Processed Per Day...     67      68      71
                                                              =====   =====   =====
</TABLE>

- ---------------

(1) 1997 and 1996 were restated to include only natural gas liquids received as
    a processing fee.

     See the supplemental petroleum data in the consolidated financial
statements of Conoco included in this document for the annual production volumes
of oil (crude oil, condensate and natural gas liquids) and natural gas from
proved reserves. Proved oil production volumes exclude natural gas liquids from
plant ownership.

                                       102
<PAGE>   103

     The following table sets forth Conoco's average production costs per
barrel-of-oil-equivalent produced, average sales prices per barrel of crude oil
and condensate sold and average sales prices per thousand cubic feet of natural
gas sold for the three-year period ended December 31, 1998. The table excludes
Conoco's share of equity affiliates. Average sales prices exclude proceeds from
sales of interests in oil and gas properties.

<TABLE>
<CAPTION>
                                                                TOTAL     UNITED             OTHER
                                                              WORLDWIDE   STATES   EUROPE   REGIONS
                                                              ---------   ------   ------   -------
                                                                     (UNITED STATES DOLLARS)
<S>                                                           <C>         <C>      <C>      <C>
For the year ended December 31, 1998
  Average production costs per barrel of oil equivalent of
     petroleum produced.....................................   $ 3.95     $ 3.69   $ 4.54   $ 3.21
  Average sales prices of produced petroleum
     Per barrel of crude oil and condensate sold............    12.37      12.17    12.61    12.12
     Per mcf of natural gas sold............................     2.24       1.96     2.86     1.42
For the year ended December 31, 1997
  Average production costs per barrel of oil equivalent of
     petroleum produced.....................................     4.21       4.23     4.51     3.40
  Average sales prices of produced petroleum
     Per barrel of crude oil and condensate sold............    18.58      17.93    18.93    18.35
     Per mcf of natural gas sold(1).........................     2.44       2.18     3.25     1.41
For the year ended December 31, 1996
  Average production costs per barrel of oil equivalent of
     petroleum produced.....................................     3.84       4.11     4.13     2.50
  Average sales prices of produced petroleum
     Per barrel of crude oil and condensate sold............    20.11      18.68    20.94    19.47
     Per mcf of natural gas sold(1).........................     2.12       1.70     2.92     1.24
</TABLE>

- ---------------

(1) 1997 and 1996 restated from wet gas price to dry gas price.

  DRILLING AND PRODUCTIVE WELLS

     The following table sets forth Conoco's drilling wells and productive wells
by region as of December 31, 1998. The table excludes Conoco's share of equity
affiliates.

<TABLE>
<CAPTION>
                                                                TOTAL     UNITED             OTHER
                                                              WORLDWIDE   STATES   EUROPE   REGIONS
                                                              ---------   ------   ------   -------
                                                                        (NUMBER OF WELLS)
<S>                                                           <C>         <C>      <C>      <C>
Number of wells drilling(1)
  Gross.....................................................       56        33      11        12
  Net.......................................................       23        16       2         5
Number of productive wells(2)
  Oil wells -- gross........................................    7,553     6,989     236       328
            -- net..........................................    2,659     2,517      22       120
  Gas wells -- gross........................................    8,593     8,364     159        70
             -- net.........................................    4,370     4,267      43        60
</TABLE>

- ---------------

(1) Includes wells being completed.

(2) Approximately 182 gross (31 net) oil wells and 742 gross (275 net) gas wells
    have multiple completions.

                                       103
<PAGE>   104

  DRILLING ACTIVITY

     The following table sets forth Conoco's net exploratory and development
wells drilled by region for the three-year period ended December 31, 1998. The
table excludes Conoco's share of equity affiliates.

<TABLE>
<CAPTION>
                                                                TOTAL     UNITED             OTHER
                                                              WORLDWIDE   STATES   EUROPE   REGIONS
                                                              ---------   ------   ------   -------
                                                                 (NUMBER OF NET WELLS COMPLETED)
<S>                                                           <C>         <C>      <C>      <C>
For the year ended December 31, 1998
  Exploratory -- productive.................................      7.3       2.2     1.1       4.0
               -- dry.......................................     14.0       5.4     1.9       6.7
  Development -- productive.................................    234.8     215.9     2.8      16.1
                 -- dry.....................................     13.0      13.0     0.0       0.0
For the year ended December 31, 1997
  Exploratory -- productive.................................      7.1       3.7     1.6       1.8
               -- dry.......................................     18.4      11.7     4.9       1.8
  Development -- productive.................................    142.6     126.9     5.4      10.3
                 -- dry.....................................     10.2       7.2     0.0       3.0
For the year ended December 31, 1996
  Exploratory -- productive.................................     42.8       1.6     2.0      39.2
               -- dry.......................................     20.5      10.3     4.0       6.2
  Development -- productive.................................     89.9      73.1     6.1      10.7
                 -- dry.....................................     17.3      13.5     0.3       3.5
</TABLE>

  DEVELOPED AND UNDEVELOPED PETROLEUM ACREAGE

     The following table sets forth Conoco's developed and undeveloped petroleum
acreage by region as of December 31, 1998. The table excludes Conoco's share of
equity affiliates.

<TABLE>
<CAPTION>
                                                                TOTAL     UNITED             OTHER
                                                              WORLDWIDE   STATES   EUROPE   REGIONS
                                                              ---------   ------   ------   -------
                                                                      (THOUSANDS OF ACRES)
<S>                                                           <C>         <C>      <C>      <C>
Developed acreage
  Gross.....................................................    7,691     3,253    1,023     3,415
  Net.......................................................    3,121     1,534      265     1,322
Undeveloped acreage
  Gross.....................................................   93,254     3,613    4,829    84,812
  Net.......................................................   61,564     2,428    1,588    57,548
</TABLE>

     Conoco is not required to file, and has not filed on a recurring basis,
estimates of its total proved net oil and gas reserves with any U.S. or non-U.S.
governmental regulatory authority or agency other than the Department of Energy
and the SEC. The estimates furnished to the DOE have been consistent with those
furnished to the SEC. They are not necessarily directly comparable, however, due
to special DOE reporting requirements such as requirements to report in some
instances on a gross, net or total operator basis, and requirements to report in
terms of smaller units. In no instance have the estimates for the DOE differed
by more than five percent from the corresponding estimates reflected in total
reserves reported to the SEC.

DOWNSTREAM

  SUMMARY

     Downstream operations encompass refining crude oil and other feedstocks
into petroleum products, buying and selling crude oil and refined products and
transporting, distributing and marketing petroleum products. Downstream
operations are organized regionally with operations in the United States, Europe
and the Asia Pacific region. United States and European operations provided 55
and 56 percent of total downstream earnings in 1998, respectively, partially
offset by a small loss resulting from start-up activities in Asia Pacific.
Downstream's objective is to continue to provide an appropriate return on
investment by improving the

                                       104
<PAGE>   105

competitiveness of the core business, while providing free cash flow to fund
growth in upstream, as well as in new downstream businesses. Consistent with
such objectives, Conoco has in the past, and may from time to time in the
future, purchase or sell downstream assets. Conoco may also consider forming
alliances or joint ventures to hold and operate all or a selected part of its
downstream assets, either to optimize the efficiency of such operations through
achieving economies of scale or to monetize a portion of the value of such
assets.

     Conoco has made capital investments in downstream activities averaging
approximately $600 million per year for the last three years. 1998 capital
investments in downstream activities were approximately $530 million.

     Conoco's downstream strengths are in the following areas:

     - processing heavy, high sulfur and acidic crudes;

     - upgrading bottom-of-the barrel feedstocks via coking technology;

     - maintaining low cost, high volume retail marketing operations; and

     - developing specialty products.

Approximately 50 percent of Conoco's worldwide refining capacity is designed to
process heavy, high sulfur crude. The Humber refinery in the United Kingdom can
process about 44 percent acidic crudes in its crude slate. Conoco has applied
its coking technology to nearly all of its refining operations throughout the
world. This has enabled Conoco to become a world leader in producing petroleum
coke products, such as high value graphite and anode coke, which are used in the
production of electrodes and anodes for the steel and aluminum industries.
Conoco has also licensed its fuel coking technology around the world, which has
in turn created other business development opportunities.

     Conoco produces and markets a full range of refined petroleum products
including gasolines, diesel fuels, heating oils, aviation fuels, heavy fuel
oils, asphalts, lubricants, petroleum coke products and petrochemical
feedstocks.

Conoco owns and operates, or is a partner in the operation of nine refineries
worldwide with a total crude and condensate capacity of 807,000 barrels per
calendar day. Refining capacity is distributed 62 percent in the United States,
33 percent in Europe and 5 percent in the Asia Pacific region.

     Capacity has risen by over 185,000 barrels per day, or 30 percent, since
year end 1995 as a result of:

     - the expansion of the Lake Charles refinery;

     - the upgrade of the Humber refinery;

     - the acquisition of an interest in two refineries in the Czech Republic;
       and

     - an investment in the new Melaka refinery in Malaysia.

In the United States, Conoco primarily markets through low cost wholesale
operations. Conoco has a growing marketing presence in Europe and Asia Pacific,
where it is a leader in operating low cost, high volume retail stations. In
1998, refined product sales averaged 1,049,000 barrels per day, distributed 68
percent, 31 percent and one percent in the United States, Europe and the Asia
Pacific region.

  UNITED STATES

     Conoco's four U.S. refineries are high conversion facilities with design
capacity to process over 50 percent high sulfur crude oils, much of which is
also heavy crude. A principal factor affecting the profitability of Conoco's
U.S. operations is the price of refined products in relation to the cost of
crude oils and other feedstocks processed. Because Conoco is able to process a
relatively large portion of heavy, high sulfur crude oil, the cost advantage of
these crude oils, such as those from Mexico, Venezuela and Canada, over lighter,
low sulfur crude oils, such as West Texas Intermediate, is particularly
significant. Over half of Conoco's U.S. refining capacity is located in inland
markets and therefore benefits from the price differential for products produced
and sold inland versus those produced and sold on the Gulf Coast.

                                       105
<PAGE>   106

     Integration of refining, transportation and marketing, and continuous
improvement initiatives have provided increased profitability through
improvements in refinery reliability, utilization, product yield and energy
usage. Since the end of 1994, Conoco has increased refining input at its four
U.S. refineries by approximately 14 percent, while lowering average operating
expenses by approximately $2.00 per barrel of refinery input. Conoco has
improved market share through geographic concentration of markets.

     Conoco intends to limit future downstream capital investments in the United
States, excluding large, non-discretionary, regulatory-driven projects and
selected growth projects, to a level that is less than half of downstream
operating cash flow in the United States. Capital expenditures were
approximately $201 million in 1998, a decline of approximately $26 million
compared to $227 million in 1997, reflecting the completion of major projects.
Conoco is positioned to make the necessary clean fuels investments at its
refineries over the next five years in support of changing motor fuel
specifications. Conoco also plans to make investments at the Lake Charles
refinery to facilitate processing of Petrozuata synthetic crude.

  Refining

     Conoco operates four wholly owned refineries in the United States. The
following tables outline the rated crude and condensate distillation capacity as
of December 31 for each of the past five years, and the average daily crude,
condensate and other inputs for each of the past five years. The refining input
table includes feedstocks in addition to crude and condensate on which rated
capacity is based, and includes actual crude and condensate runs, which may
exceed rated capacity.

<TABLE>
<CAPTION>
                                                                        DECEMBER 31
                                                              --------------------------------
                                                              1998   1997   1996   1995   1994
                                                              ----   ----   ----   ----   ----
                                                               (THOUSANDS OF BARRELS PER DAY)
<S>                                                           <C>    <C>    <C>    <C>    <C>
REFINERY CRUDE AND CONDENSATE CAPACITY
Lake Charles, Louisiana.....................................  226    226    226    191    182
Ponca City, Oklahoma........................................  168    155    155    150    140
Denver, Colorado............................................   58     58     58     58     58
Billings, Montana...........................................   52     52     52     49     49
                                                              ---    ---    ---    ---    ---
          Total.............................................  504    491    491    448    429
                                                              ===    ===    ===    ===    ===
</TABLE>

<TABLE>
<CAPTION>
                                                                        DECEMBER 31
                                                              --------------------------------
                                                              1998   1997   1996   1995   1994
                                                              ----   ----   ----   ----   ----
                                                               (THOUSANDS OF BARRELS PER DAY)
<S>                                                           <C>    <C>    <C>    <C>    <C>
REFINERY INPUTS(1)
Lake Charles, Louisiana
  Crude and condensate(2)...................................  216    211    177    179    183
  Other feedstocks..........................................   24     23     21     23     24
Ponca City, Oklahoma
  Crude and condensate(2)...................................  167    161    150    151    144
  Other feedstocks..........................................    4      2      2      5      2
Denver, Colorado
  Crude and condensate(2)...................................   50     53     49     49     47
  Other feedstocks..........................................    0      0      0      0      0
Billings, Montana
  Crude and condensate(2)...................................   52     51     51     45     48
  Other feedstocks..........................................    3      3      3      3      3
          Total crude and condensate........................  485    476    426    424    422
          Total other feedstocks............................   31     27     26     31     30
</TABLE>

     Conoco's U.S. consolidated refined product yields by volume in 1998 were 49
percent motor gasoline, 40 percent middle distillates, including jet and diesel
fuel, 11 percent residual fuel oil and asphalt and other products, including
petroleum coke, lubricants and liquified petroleum gases.

                                       106
<PAGE>   107

  Lake Charles Refinery and Related Facilities

     Conoco's Lake Charles refinery, located in Westlake, Louisiana, is a fully
integrated, high conversion facility which has a crude and condensate capacity
of 226,000 barrels per day and processes both heavy, high sulfur crude oil and
low sulfur crude oil. The refinery's Gulf Coast location provides access to
numerous cost effective domestic and international crude oil sources. The crude
design capacity is approximately 170,000 barrels per day of heavy, high sulfur
crudes with the remaining 56,000 barrels per day of local, domestically supplied
low sulfur crudes. While the types and origins of these lower priced, heavy,
high sulfur crudes can vary, the majority consists of Venezuelan and Mexican
crudes delivered via tanker. The Lake Charles refinery products can be delivered
by truck, rail or major common carrier product pipelines partially owned by
Conoco which serve the eastern and mid-continent United States. In addition,
refinery products can be sold into export markets through the refinery's marine
terminal.

     The ability to refine both low sulfur and heavy, high sulfur crudes at the
Lake Charles refinery provides a competitive advantage to Conoco by enabling the
refinery to produce from relatively low-cost feedstocks a full range of products
including gasolines, jet fuel, diesel fuel, petroleum coke, lube oils, LPG and
other specialty products. The refinery facilities include fluid catalytic
cracking, delayed coking and hydrodesulfurization units which enable it to
maximize its upgrade of heavier crude oil. A crude unit expansion and a new
catalytic reformer were completed in conjunction with the Excel Paralubes
project to take advantage of synergies generated between the two facilities.
Conoco is making investments in the Lake Charles refinery so that in the future
it will be able to process Petrozuata synthetic crude.

     Integration of fuels and specialty products plays an important role in
maximizing product value at the refinery. Intermediates produced from low sulfur
crude processing allow the refinery to supply the heaviest, highest boiling
range material in the crude to Conoco's 35-percent-owned Cit-Con lube plant for
base oils, finished lubes and wax production. Other intermediates are exchanged
with a neighboring chemical plant complex for further processing.

     The refinery supplies high sulfur gas oil to Excel Paralubes, Conoco's
50/50 joint venture with Pennzoil-Quaker State. Excel Paralubes'
state-of-the-art hydrocracked lubricating base oil facility produces
approximately 21,000 barrels per day of high quality hydrocracked base oils,
representing approximately ten percent of U.S. lubricating base oil production.
Hydrocracked base oils are second in quality only to synthetic base oils, but
are produced at a much lower cost. The capacity of this facility was recently
increased to over 17 percent above the plant's design capacity. The refinery
produces other specialty intermediates for making solvents to supply the
recently formed Penreco joint venture company, which is also a joint venture
with Pennzoil-Quaker State. Penreco manufactures and markets highly refined
specialty petroleum products for global markets.

     The Lake Charles facilities also include a specialty coker and calciner
that manufacture the more highly valued graphite and anode petroleum cokes for
the steel and aluminum industries, and provide a substantial increase in light
oils production by converting the heaviest part of the crude barrel into diesel
fuel and gasoline. In addition, green petroleum coke is supplied to a nearby
coke calcining venture.

  Ponca City Refinery

     Conoco's refinery located in Ponca City, Oklahoma has a crude and
condensate capacity of 168,000 barrels per day of light, high sulfur and light,
low sulfur crudes. Both foreign and domestic crudes are delivered by pipeline
from offshore, Oklahoma, Kansas, and North and West Texas fields. Finished
products are shipped by truck, rail and company-owned and common carrier
pipelines to markets throughout the mid-continent region.

     The Ponca City refinery is a high conversion facility that produces a full
range of products, including gasoline, jet fuel, diesel, LPG and anode and fuel
grade petroleum cokes. The refinery's facilities include fluid catalytic
cracking, delayed coking and hydrodesulfurization units, which enable it to
produce high ratios of gasoline and diesel fuel from crude oil.

                                       107
<PAGE>   108

  Denver Refinery

     Conoco's Denver refinery, located in Commerce City, Colorado, has a crude
and condensate capacity of 58,000 barrels per day, processing a mixture of
Canadian heavy, high sulfur crudes, and domestic heavy, high sulfur crude oils
and low sulfur crude oils. Almost all crude oil processed at the refinery is
transported via pipeline. Products are delivered predominantly through a local
truck loading terminal to the east side of the Rockies but also by rail and
pipelines to other Colorado markets. The refined gasoline products from the
Denver refinery help supply Conoco's marketing operations in the Rocky Mountain
states.

     The Denver refinery is a high conversion refinery that produces a full
range of products including gasolines, jet fuels, diesel and asphalt. The
refinery's upgrading units enable it to process a crude slate containing nearly
50 percent heavy, high sulfur crude. Conoco has a processing agreement with a
refinery located in Cheyenne, Wyoming, that has coking capabilities from which
the refinery receives intermediate feedstocks for processing into finished
products. The Denver refinery also supplies KC Asphalt, its 50/50 joint venture
with Koch Industries, with high quality asphalt products. Both of these ventures
enable Conoco to turn relatively low value intermediates into higher margin
products.

  Billings Refinery

     Conoco's Billings, Montana refinery has a crude and condensate capacity of
52,000 barrels per day, processing a mixture of over 80 percent Canadian heavy,
high sulfur crude plus domestic high sulfur and low sulfur crude oils all
delivered by pipeline. Products from the refinery are delivered via
company-owned pipelines, rail, and trucks, thereby supplying Conoco's extensive
branded marketing operations in eastern Washington and the northern Rocky
Mountain states. The refinery's proximity to its primary source of crude and its
ability to refine both low sulfur and heavy sulfur crudes provides Conoco with
significant competitive advantages.

     The Billings refinery is a high conversion refinery that produces a full
range of products including gasolines, jet fuels, diesel and fuel grade
petroleum coke. The Billings refinery has a very high conversion rate and the
capability to process less expensive, very heavy, high sulfur crudes. A delayed
coker converts heavy, high sulfur residue into higher value light oils. A gas
oil hydrotreating unit and hydrogen plant improve the light oil production
yields and remove the additional sulfur contained in these heavy, high sulfur
crudes.

  Marketing

     In the United States, Conoco markets gasoline, utilizing the Conoco brand,
in 33 states, 20 of which represent primary markets, in the southeast,
mid-continent and Rocky Mountain regions. Market growth continues to be targeted
to those areas where Conoco can obtain a strong market share and areas that
leverage supply from its U.S. refineries and those distribution systems in which
it has an ownership position. Increasing operating market share has resulted in
particularly strong brand recognition in the Rocky Mountain and mid-continent
markets.

     Conoco gasoline is sold through approximately 4,900 branded stations in the
United States, 95 percent through retail outlets owned by independent wholesale
marketers and five percent through 255 company-owned stores at year end 1998.
Conoco markets gasoline primarily through the wholesale channel in the United
States because it requires a lower capital investment than company-owned retail
stations but still provides a secure, branded outlet for Conoco's products.
Conoco operates retail stations to establish brand standards and image as well
as to better understand the independent distributors in order to provide
programs and services to them and the consumer.

     Building on this knowledge, Conoco has recently introduced "breakplace(R),"
a new concept in convenience store design. This new format, involving the
complete redesign of an outlet's exterior and interior, is intended to increase
the frequency and transaction size of customer visits by catering to the needs
of the "convenience connoisseur." There were 34 breakplace(R) locations as of
December 31, 1998, and Conoco is licensing the trademark to marketers. Many more
stores in the network have adopted comprehensive offerings patterned after the
format, thereby supporting wholesale marketing and elevating Conoco's brand
perception to the consumer.

     At year-end 1998, CFJ Properties, a 50/50 joint venture between Conoco and
Flying J, owned and operated 83 truck travel plazas that carry both the Conoco
and Flying J brands and provide a secure outlet for Conoco's

                                       108
<PAGE>   109

diesel production. In addition, bulk sales of all refined petroleum products are
made to commercial, industrial and spot market customers.

  Transportation

     Conoco has approximately 6,500 miles of crude and product mainline
pipelines in the United States, including those partially owned and/or operated
by affiliates. Conoco also owns and operates 38 finished product terminals, six
liquified petroleum gas terminals, one crude terminal and one coke-exporting
facility. Conoco's crude pipeline interests and terminals provide integral
logistical links between crude sources and refineries to lower crude costs. The
product pipelines serve as secure links between refineries and key products
markets. Conoco's U.S. pipeline system transported an average of 909,000 barrels
per day in 1998. Conoco's equity share of shipments on affiliate pipelines was
an additional 383,000 barrels per day.

     Conoco currently operates a fleet of seven seagoing crude oil tankers,
principally of Liberian registry, including five double-hulled tankers. Conoco
operates a 100 percent double-hulled tanker and barge fleet in United States
waters. Four vessels are used to provide secure transportation to the Lake
Charles refinery, two others are in use in the Asia Pacific market and are
currently slated for disposition later this year, and another is on lease to a
third party for use as a shuttle tanker for the Heidrun field in the North Sea,
in which Conoco has an interest. An eighth vessel is being used as a floating
production storage and offtake vessel off the coast of Nigeria. Two additional
double-hulled tankers are currently under construction and will be joining the
fleet in the Gulf of Mexico in 1999.

  EUROPE

     Conoco's European refining and marketing activities are conducted in 17
countries. Conoco's primary European markets are in the United Kingdom and
Germany, which together accounted for 96 percent of its European downstream
after-tax earnings in 1998. Conoco also has marketing operations in Austria,
Belgium, Denmark, Finland, France, Luxembourg, Norway, Sweden, and Switzerland.
More recently Conoco has entered the faster growing markets in the Czech
Republic, Hungary, Poland, Slovakia, Spain and Turkey. The marketing operations
in Central and Eastern Europe are complemented by an equity interest in two
refineries in the Czech Republic.

     Conoco's European downstream strategy has been to operate low cost, high
volume retail outlets in selected key markets where it has a competitive
advantage, pursue opportunities in growth regions, and maintain its Humber
refinery and the Mineraloel Raffinerie Oberrhein GmbH ("MiRO") joint venture
refinery, in the United Kingdom and Germany, as top performers in Europe. Conoco
plans to redirect cash generated by its mature European businesses to other
parts of upstream and downstream operations and to the identified European
growth markets.

     Conoco invested approximately $180 million in its European downstream
operations in both 1997 and 1998 and expects to invest about $225 million in
1999. Conoco continues to implement relatively low-cost projects in its refining
operations designed to increase production and yields, while reducing feedstock
costs and operating expenses. Conoco plans to continue to direct capital
expenditures for marketing operations, which are expected to be approximately 50
percent of the European downstream total capital expenditures, toward
construction of new stations in growth markets, primarily in Central and Eastern
Europe and also in its areas of competitive strength in Germany, Austria and the
Nordic countries.

     Conoco's European downstream profitability is affected by several factors.
As with all refining operations, the difference between the market price of
refined products and the cost of crude oil is the major factor. Conoco's
European refineries are able to process lower cost crudes or upgrade other
feedstocks into high value finished products. In addition, since the United
Kingdom refinery also processes fuel oil as a feedstock, the price difference
between low sulfur fuel oil and finished products is important to earnings.
European operations also include significant retail marketing volumes, and
therefore earnings are driven by retail margins, fuel and convenience product
sales and operating expenses in the various countries where Conoco operates.

                                       109
<PAGE>   110

  Refining

     Conoco's principal European refining operations are located in the United
Kingdom, Germany and the Czech Republic. Since early 1996, Conoco's European
crude refining capacity has increased by approximately 52 percent, or 90,000
barrels per day, principally as a result of three factors:

     - the expansion of Conoco's Humber refinery in the United Kingdom;

     - the formation of the MiRO joint venture through consolidation with a
       neighboring German refinery; and

     - the purchase of a share in a joint venture owning two Czech Republic
       refineries.

Conoco has continuously upgraded its refineries in Europe since the early 1990's
and the configuration and output of the refineries are two of Conoco's primary
sources of competitive advantage in Western Europe.

     Conoco has undertaken a major capital investment program totaling
approximately $350 million from 1994 through 1998 to process lower cost
feedstocks and increase conversion capacity, product quality and energy
efficiency at the Humber refinery. Conoco plans to make more than $100 million
in capital expenditures at the Humber refinery in 1999 in order to continue to
improve reliability and efficiency and to make investments to meet clean fuel
specifications. Conoco is also participating in upgrading projects at its joint
venture owned refineries in Germany and the Czech Republic.

     The following tables outline the rated crude and condensate distillation
capacity as of December 31 for each of the past five years and the annual
average daily crude and condensate and other inputs for each of the past five
years. The following table does not include Conoco's indirect 1.2 percent
interest in a 95,000 barrel per day refinery in Mersin, Turkey acquired as a
result of its marketing joint venture in Turkey. The refinery inputs table
includes feedstocks in addition to crude and condensate on which rated capacity
is based, and includes actual crude and condensate runs, which may exceed rated
capacity.

<TABLE>
<CAPTION>
                                                                          DECEMBER 31
                                                            ----------------------------------------
                                                            1998     1997     1996     1995     1994
                                                            ----     ----     ----     ----     ----
                                                                 (THOUSANDS OF BARRELS PER DAY)
<S>                                                         <C>      <C>      <C>      <C>      <C>
REFINERY CRUDE AND CONDENSATE CAPACITY
Humber, United Kingdom....................................  180      180      180      130      130
MiRO, Germany(1)..........................................   54       54       43       43       43
Czech Republic(2).........................................   29       29       29       --       --
                                                            ---      ---      ---      ---      ---
          Total...........................................  263      263      252      173      173
                                                            ===      ===      ===      ===      ===
</TABLE>

- ---------------

(1) The 1998 and 1997 figures represent Conoco's 18.75 percent interest in the
    MiRO refinery complex at Karlsruhe, Germany. For the years 1996 and earlier,
    Conoco's interest was 25 percent of the OMW refinery.

(2) Represents Conoco's 16.33 percent interest in two Czech Republic refineries.

                                       110
<PAGE>   111

<TABLE>
<CAPTION>
                                                                        DECEMBER 31
                                                              --------------------------------
                                                              1998   1997   1996   1995   1994
                                                              ----   ----   ----   ----   ----
                                                               (THOUSANDS OF BARRELS PER DAY)
<S>                                                           <C>    <C>    <C>    <C>    <C>
REFINERY INPUTS
Humber, United Kingdom(1)
  Crude and condensate......................................  165    137    121    133    125
  Other feedstocks..........................................   57     56     76     74     59
MiRO, Germany(2)
  Crude and condensate......................................   54     51     47     46     46
  Other feedstock...........................................    3     11     13     13     15
Czech Republic(3)
  Crude and condensate......................................   20     21     22     --     --
  Other feedstocks..........................................    1      1      1     --     --

          Total crude and condensate........................  239    209    190    179    171
          Total other feedstocks............................   61     68     90     87     74
</TABLE>

- ---------------

(1) The tie-in of a major expansion project and a major refinery maintenance
    turnaround significantly affected the Humber Refinery's utilization in 1997
    and 1996.

(2) The 1998 and 1997 figures represent Conoco's 18.75 percent interest in the
    MiRO refinery complex at Karlsruhe, Germany. For 1996 and earlier, Conoco's
    interest was 25 percent of the OMW refinery.

(3) Represents Conoco's 16.33 percent interest in two refineries in the Czech
    Republic.

     The yield of Conoco's European refineries by product and country for the
year ended December 31, 1998, was as follows:

<TABLE>
<CAPTION>
                                                              UNITED
                                                              KINGDOM   GERMANY   CZECH REPUBLIC
                                                              -------   -------   --------------
<S>                                                           <C>       <C>       <C>
PERCENT OF TOTAL YIELD(1)
Motor gasoline..............................................    37        40            19
Middle distillate...........................................    42        44            31
Residual fuel oil and asphalt...............................     9         8            23
Other(2)....................................................    12         8            27
</TABLE>

- ---------------

(1) Percentages are volume based, not weight based.

(2) Other products primarily include petroleum coke, lubricants and liquified
    petroleum gases.

  United Kingdom Refinery

     Conoco's wholly owned Humber refinery is located in North Lincolnshire,
England, and has a crude and condensate capacity of 180,000 barrels per day.
Crude processed at the refinery is exclusively low or medium sulfur, supplied
primarily from the North Sea and includes lower cost, acidic crudes. The
refinery also processes up to 60,000 barrels per day of other intermediate
feedstocks, mostly vacuum gas oils and residual fuel oil, which many other
European refineries are not able to process. The refinery's location on the east
coast of England provides for cost-effective North Sea crude imports and product
exports to European and world markets.

     The Humber refinery, one of the most sophisticated refineries in Europe, is
a fully integrated, high conversion refinery that produces a full slate of light
products and minimal fuel oil. In 1996, Conoco increased crude capacity at the
refinery and added a vacuum unit that allows the refinery to process up to
80,000 barrels per day of the less expensive, acidic North Sea crudes. The
refinery also has two coking units with associated calcining plants, which
upgrade the heavy "bottoms" and imported feedstocks into light oil products and
high value graphite and anode petroleum cokes. Approximately 50 percent of the
light oils produced in the refinery are marketed in the United Kingdom while the
other products are exported to the rest of Europe and the

                                       111
<PAGE>   112

United States. This gives the refinery the flexibility to take full advantage of
inland and global export market opportunities.

  Germany Refinery

     The MiRO refinery in Karlsruhe, Germany, is a joint venture refinery with a
crude and condensate capacity of 285,000 barrels per day. The MiRO joint venture
arose from the combination in 1996 of the existing OMW refinery, in which Conoco
had a 25 percent share, with an adjacent Esso refinery. Conoco has an 18.75
percent interest in MiRO and Conoco's capacity share is 54,000 barrels per day.
The other owners of MiRO are DEA Mineraloel AG, Esso AG and Ruhr Oel GmbH, a
50/50 joint venture between Veba and PDVSA. Approximately 55 percent of the
refinery's crude feedstock is low cost, high sulfur crude. The MiRO refinery
complex is a fully integrated, high conversion refinery producing gasoline,
middle distillates, residual fuel oil and other products. The refinery has a
high capacity to convert lower cost feedstocks into high value products
primarily with a fluid catalytic cracker and delayed coker. The coker produces
both fuel grade and specialty calcined cokes.

     The creation of the MiRO joint venture has improved the refinery's
competitiveness and was driven by the synergy that existed between the two
facilities. Integrated operations have yielded improved product slates, which
better match local demand, and increased processing efficiency, while retaining
operational flexibility for the partners. The refinery processes crude and
feedstock supplied by each of the partners in proportion to their respective
ownership interests. Streamlining the two operations has allowed Conoco to
eliminate less efficient processing units in both refineries, resulting in lower
operating costs.

  Czech Republic Refineries

     In late 1995, Conoco, through participation in the newly formed Czech
Refining Company, acquired an interest in two refineries in the Czech Republic.
The other owners of Czech Refining Company are Unipetrol A.S., Agip Petroli, and
Shell Overseas Investment B.V. The refinery at Litvinov has a crude and
condensate capacity of 109,800 barrels per day, and the Kralupy refinery has a
crude and condensate capacity of 67,500 barrels per day. Conoco's 16.33 percent
ownership share of the combined capacity is 29,000 barrels per day. Both
refineries process mostly high sulfur crude, with a large portion being Russian
export blend delivered by pipeline at an advantageous cost. The refineries have
an alternative crude supply via a pipeline from the Mediterranean.

     Conoco expects that completion of a visbreaker project at the Litvinov
refinery scheduled for the year 2000 will increase conversion rates and
significantly reduce fuel oil production. The Kralupy refinery is currently a
hydroskimming facility, but Czech Refining Company has approved an investment in
major conversion facilities, to reduce fuel oil production and increase light
oil yields. The two Czech refineries are operated as a single entity with
intermediate streams moving between the two facilities. Czech Refining Company
markets finished products both inland and abroad. Conoco intends to use its
share of the light oil production to support an expanding retail marketing
network in Central and Eastern Europe.

  Marketing

     Conoco has marketing operations in 17 European countries. Conoco's European
marketing strategy is to sell primarily through owned, leased or joint venture
retail sites using a low cost, high volume, low price strategy. Conoco intends
to expand into identified growing markets, while concurrently strengthening its
market share in core markets such as Germany, Austria and the Nordic countries.
Conoco is standardizing its European retail operations in order to capture cost
savings and prepare for a more integrated Europe. Conoco is continuing to reduce
its cost structure for marketing activities while also optimizing the growing
income in the non-fuels sector. Conoco also markets aviation fuels, liquid
petroleum gases, heating oils, transportation fuels and marine bunkers to
commercial accounts and into the bulk or spot market.

     Conoco uses the "Jet" brand name to market its retail products in its
wholly owned operations in Austria, Czech Republic, Denmark, Finland, Germany,
Hungary, Norway, Poland, Slovakia, Sweden and the United Kingdom. In Belgium and
Luxembourg, it markets under the "SECA" brand. Stations throughout Europe also
                                       112
<PAGE>   113

display the "Conoco" brand. In addition, various joint ventures in which Conoco
has an equity interest market products in Spain under the "Jet" brand, in
Switzerland under the "OK Co-op" brand and in Turkey under the "Tabas" or
"Turkpetrol" brand names.

     As of December 31, 1998, Conoco had 1,960 marketing outlets in its wholly
owned European operations, of which 1,424 were company-owned. Through its joint
venture operations in Turkey, Spain and Switzerland, Conoco also has an interest
in another 963 retail sites. The largest branded site networks are in Germany
and the United Kingdom, which account for 60 percent of the total branded units.
In Germany and Austria, 21 outlets were added during 1998. In the Nordic
countries, Conoco has expanded from its base of unmanned sites in Sweden and
Denmark into Norway and Finland with 11 new stations in the region. In response
to weak fuel margins in the United Kingdom over the past several years, Conoco
has restructured its operations, reducing the number of stations and focusing on
locations where Conoco has a competitive advantage, which has reduced its unit
breakeven cost structure.

     Conoco has been expanding in targeted growth markets of the Czech Republic,
Poland, Hungary and Slovakia in Central and Eastern Europe, and has added 25
stations in the last year for a total of 126 stations at December 31, 1998.
Conoco expects to continue this expansion in order to capture the demand growth
and rising margins expected in these inland markets. This marketing expansion
allows Conoco to obtain further integration with products produced at the Czech
refineries. Similarly, Conoco has invested in the growing markets of Spain and
Turkey, where at the end of 1998, it had an interest through its joint ventures
in 115 and 761 sites. The joint venture marketing operation in Turkey also
provides Conoco with a strategic position and opportunity for upstream ventures
in this region.

  ASIA PACIFIC

     Conoco is looking to the Asia Pacific region for much of its long-term
downstream growth. Despite the recent economic downturn, Conoco expects the
Asian market, in the long-term, to grow faster than comparable markets. Conoco
intends to establish at least 100,000 barrels per day of equity refining
capacity in the region long-term and expand its marketing operations to
integrate with the refining supply and capitalize on market deregulation and
long-term regional demand growth.

     The refinery in Melaka, Malaysia was built by a joint venture which is 40
percent owned by Conoco with partners Petronas, the Malaysian state oil company,
and Statoil and has a rated crude capacity of 100,000 barrels per day, of which
Conoco's share is 40,000 barrels per day. Start-up of the Melaka refinery was
initiated in August 1998 with the commissioning of the crude unit. Since
start-up of the refinery, all major operating units have proven their capability
to operate at design rates. After some early start-up adjustments, most units
are at full capacity and actual throughputs are being optimized according to
existing economic conditions. Initial crude unit operation was followed shortly
thereafter by the start-up of the reformer, hydrocracker and coker units. The
joint venture has a five-year tax holiday that commenced April 1, 1999. The
feedstocks for the refinery will consist of up to approximately 70 percent high
sulfur crude and 30 percent sweet crude.

     This refinery capitalizes on Conoco's proprietary coking technology to
upgrade low-cost feedstocks to higher-margin products. Initial refinery units,
in addition to the fuels delayed coker, include:

     - a crude and vacuum distillation unit;

     - a vacuum gas oil hydrocracker;

     - naphtha and diesel hydrotreater;

     - catalytic reformer; and

     - an isomerization unit.

The refinery is a high conversion facility that will produce a full range of
refined petroleum products.

     Conoco intends to use its share of refined products from the refinery to
continue growing its retail marketing operations in Thailand, Malaysia and
throughout the Asia Pacific region. The balance of Conoco's

                                       113
<PAGE>   114

share of production will be sold primarily in the spot market. Conoco has its
regional crude and product supply and disposition operations centrally located
in Singapore.

     Conoco began marketing motor fuels in Thailand in 1993. Using a high
volume, low price strategy and marketing concepts and strategies that were new
to Thailand, Conoco has already established a significant presence in the Thai
retail market. Early in 1999, Conoco opened its 100th store in Thailand. Conoco
plans to build an additional 100 new retail outlets.

     Conoco has launched a retail marketing joint venture in Malaysia with Sime
Darby Bhd., a company that has a major presence in the Malaysian business
sector. Capitalizing on the cost benefits of direct supply, the benefits of
being the first licensees since 1969 to establish retail marketing in Malaysia,
and the currently depressed prices of premium Malaysian real estate, Conoco will
initially target major markets within 125 miles of the Melaka refinery.
Construction commenced on the first of these stores in May 1999 and Conoco plans
to have six stores operating by the end of 1999.

  SPECIALTY PRODUCTS

     Conoco sells a variety of high value lubricants and specialty products to
commercial, industrial and wholesale accounts worldwide, including lubes such as
automotive and industrial lubricants and waxes, petroleum coke, solvents and
pipeline flow improvers. Conoco's experience has been that specialty products
are attractive because their premium prices generate higher margins and their
markets are generally less cyclical than commodity markets.

     Conoco began marketing the HYDROCLEAR(R) brand of lubricants with the
start-up of the Excel Paralubes plant in 1997. The HYDROCLEAR(R) lubricants,
which are non-toxic, were designed to compete with synthetics for a range of
applications with difficult operating conditions. Conoco also produces specialty
petroleum products for global markets through Penreco.

     Conoco's technical expertise in carbon upgrading positions it as a leader
in manufacturing and marketing specialty coke and coke products. Conoco
manufactures high quality graphite coke at its Lake Charles and Humber
refineries for use in the global steel industry. It also globally markets anode
and fuel coke produced at its Lake Charles, Ponca City, Billings and Humber
refineries. In addition, Conoco participates in the Asia Pacific coke market by
providing technical and marketing expertise to Conoco's PetroCokes joint venture
with Sumitomo and Japan Energy. In 1998, Conoco granted seven licenses for this
technology to other companies. Today Conoco's technology is used by more than
two dozen coking facilities -- a third of the world's delayed coking capacity.

     Conoco is a leader in the worldwide market for pipeline flow improvers.
Conoco's "LiquidPower(R)" product is a flow improver for increasing petroleum
pipeline capacity by reducing friction loss. Conoco also uses "LiquidPower(R)"
in its own pipeline systems.

POWER

     Conoco Global Power was founded in 1995 to leverage the economic advantages
of Conoco's energy production activities and offer integrated energy solutions
to customers by capitalizing on our strengths in managing major projects, risk
and industrial operations.

     Conoco Global Power owns 37.5 percent of a Colombian joint venture located
in Barrancabermeja, Colombia along with Western Resources and five Colombian
companies. The joint venture built a natural gas-fired generation plant capable
of producing 160 megawatts of power, which became operational in August 1998.
The joint venture sells primarily to the local grid.

     Conoco Global Power has entered into a joint venture agreement to build a
natural gas-fired cogeneration plant near Corpus Christi, Texas. Construction
has begun on the plant, which will be located adjacent to chemical complexes
owned by DuPont and OxyChem, Occidental Petroleum Corporation's chemicals
division and Conoco's partner in this joint venture. OxyChem will operate the
plant under a long-term contract and will purchase electricity and steam
production from the plant. The plant is designed to produce 440 megawatts of

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power and 1.1 million pounds per hour of process steam. The plant will be a
qualifying facility under the Public Utility Regulatory Policies Act and expects
to sell excess electricity in the Texas power markets. Commercial operation of
the plant is expected in the third quarter of 1999.

     Conoco Global Power and DuPont have signed letters of intent to develop
natural gas-fired cogeneration facilities at DuPont chemical facilities in the
United States, Spain, Luxembourg, Germany and the United Kingdom. In the United
States, the cogeneration facility will be located at DuPont's Orange, Texas
chemical complex. The proposed facility would be owned by a joint venture
between Conoco and a yet to be selected partner. The facility would provide
electric and process steam to the chemical complex, with much of the electric
output being sold as merchant power. DuPont would be the contract operator of
the facility under a long-term operating agreement. The plant is planned to
produce 440 megawatts of power and 780 thousand pounds per hour of process
steam. Construction is expected to commence in mid-1999 with commercial
operation scheduled in mid-2001. In Europe, the four plants, with a total
capacity of 510 megawatts, will provide needed electricity and steam for various
DuPont operations. Conoco also will sell surplus electric power to other
customers, including the local utilities. All four plants are expected to be in
operation by 2002.

CORE VALUES

     Conoco is committed to four core values:

     - operating safely;

     - protecting the environment;

     - behaving ethically; and

     - valuing all people.

     Conoco is a recognized industry leader in safety performance and in
protecting employees' health and the environment.

     In 1998, Conoco achieved its lowest recordable injury rate on record for
both employees and contractors. A similar performance in 1997 earned Conoco the
lowest injury rate among all major petroleum companies reporting to the American
Petroleum Institute, an achievement matched in ten out of the last 15 years.

     Conoco is also an innovator both at recycling materials and at operating in
environmentally sensitive areas. In the United Kingdom, for example, Conoco
recycled over 99 percent of four Viking gas platforms, which it decommissioned
in the North Sea. Conoco has also operated in the Aransas National Wildlife
Refuge in South Texas for 60 years. In 1990, Conoco took a major step toward oil
spill prevention as the first petroleum company to voluntarily commit to build
only double-hulled tankers -- a decision made before U.S. law mandated such
technology. During 1998, Conoco began operating fleets of 100 percent
double-hulled crude oil tankers and tank barges in U.S. waters, more than a year
ahead of its target date of 2000. Also in 1998, Conoco marked the 30th
anniversary of implementing one of the industry's first environmental policies,
which predates both World Environmental Day and Earth Day in the United States.

     In order to maintain the highest ethical standards, Conoco established
clear guidelines on business ethics which every employee agrees to follow.
Conoco has established annual President's Awards for performance in safety,
environmental protection and valuing all people. A President's Award for ethical
behavior will be added in 1999. Valuing all people includes:

     - seeking diversity in the workforce;

     - nationalizing a significant portion of Conoco's workforce in each country
       where it operates as soon as practicable;

     - responding to employee ideas and concerns;

     - treating everyone with dignity and respect;

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     - sharing the financial success of Conoco with substantially all employees
       through the "Conoco Challenge" program; and

     - helping employees contribute fully in achieving business goals.

     Conoco believes these core values result in a motivated workforce with
values and goals firmly aligned with the strategic aims of the business. They
provide guidance to employees in working to meet the expectations of customers,
partners and host governments, and in respecting the communities in which Conoco
does business. In addition, Conoco believes its commitment to core values helps
to reduce liabilities, manage risks and improve business performance.

ENVIRONMENTAL REGULATION

     As with other companies and industries engaged in similar businesses,
Conoco's operations are subject to numerous federal, state, local, European
Union and other foreign environmental laws and regulations concerning its oil
and gas operations, products and other activities, including laws that implement
international conventions or protocols. In particular, these laws and
regulations:

     - require the acquisition of permits;

     - restrict the type, quantities and concentration of various substances
       that can be released into the environment;

     - limit or prohibit activities on lands lying within wilderness, wetlands
       and other protected areas;

     - regulate the generation, handling, storage, transportation, disposal and
       treatment of hazardous materials and wastes; and

     - impose criminal or civil liabilities for pollution resulting from oil,
       natural gas and petrochemical operations.

     Conoco must obtain government permits to conduct its operations. The
duration and success of obtaining these permits are contingent upon numerous
variables, many of which are not within Conoco's control. To the extent these
permits are required and not obtained, operations may be delayed or curtailed,
or Conoco may be prohibited from proceeding with planned exploration or
operation of facilities.

     Conoco expects that environmental laws and regulations will have an
increasing impact on Conoco's operations in most of the countries in which it
operates, although it is impossible to predict accurately the effect of future
developments in these laws and regulations on its future earnings and
operations. Some risk of environmental costs and liabilities is inherent in
particular operations and products of Conoco, and Conoco may incur material
costs and liabilities to comply with existing and future environmental laws and
regulations.

     To meet future environmental obligations, Conoco is engaged in a continuing
program to develop effective measures to protect the environment. This program
includes:

     - research into reducing sulfur levels in heavy fuel oils and diesel fuel;

     - reducing benzene content in gasoline;

     - reducing vapor emissions at service stations;

     - developing more effective methods of preventing, containing and
       recovering offshore oil spills;

     - reducing the release of pollutants from Conoco's refineries and other
       facilities; and

     - developing and installing monitoring systems at its facilities.

  AIR EMISSIONS

     The operations of Conoco are subject to regulations controlling emissions
of air pollutants. The primary legislation affecting Conoco's U.S. air emissions
is the Federal Clean Air Act and its 1990 Amendments. Among other things, the
Clean Air Act requires all major sources of air emissions to obtain operating
permits.
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The Clean Air Act also revised the definition of "major source" such that
additional equipment involved in oil and gas production may now be covered by
the permitting requirements. Although the precise requirements of the Clean Air
Act are not yet known, Conoco may incur substantial capital, operating and
maintenance costs to comply with such requirements.

     The Clean Air Act requires the EPA to promulgate regulations imposing
Maximum Achievable Control Technology standards to reduce emissions of hazardous
air pollutants from industrial facilities, such as Conoco's refineries,
transportation terminals and some crude oil production operations. The EPA has
promulgated standards that are applicable to some of Conoco's operations, and
Conoco's costs to comply with them have not been material. Maximum Achievable
Control Technology standards applicable to many of Conoco's other operations
have been proposed, but not finalized. Consequently, while it is not yet
possible to predict accurately the total expenditures that Conoco may incur to
comply with these standards, Conoco anticipates that these costs could be
substantial.

     In May 1999, a federal appeals court remanded to the EPA for further
consideration two rules issued by the EPA in 1997 that revised the National
Ambient Air Quality Standards for ozone and particulate matter. These rules
would have required more stringent controls on stationary sources and
cleaner-burning fuels in some parts of the United States. The EPA plans to
appeal the court's decision. If these rules are ultimately reissued in
substantially the same form, Conoco may be required to incur substantial
expenditures to comply with the rules.

     Under the Clean Air Act, the EPA has issued a number of standards that
regulate the composition of motor fuels, including gasoline and diesel fuels
produced and marketed by Conoco. These standards are designed to reduce
emissions of air pollutants from vehicles burning such fuels. In addition, many
other countries in which Conoco produces or markets motor fuels similarly
regulate the composition of such products or are proposing to do so. Conoco has
already incurred the costs of complying with such requirements that are
currently in effect.

     The European Union recently enacted legislation that, among other things,
requires phased reductions of sulfur and aromatics content in gasoline and
diesel fuel and of benzene in gasoline. Conoco cannot yet predict accurately the
total actual expenditures that it may incur to comply with these requirements,
but it estimates capital expenditures to comply with the European Union
legislation will be $55 million in 1999, $80 million in 2000 and $160 million
between 2001 and 2004, depending on the nature of subsequent legislation. In the
U.S., the EPA has proposed regulations requiring a significantly lower level of
sulfur in gasoline. Conoco cannot predict the total actual expenditures that may
be incurred to produce motor fuels meeting specifications under any final rule
that may be issued, but such expenditures will likely be substantial.

     In 1997, an international conference on global warming concluded an
agreement, known as the Kyoto Protocol, which called for reductions of emissions
that contribute to increases in atmospheric greenhouse gas concentrations. The
combustion of fossil fuels, such as crude oil, results in emissions of the type
sought to be reduced by the Kyoto Protocol. The treaty codifying the Kyoto
Protocol has not been ratified by the United States, but it may be in the
future. In addition, other countries where Conoco has interests, or may have
interests in the future, have made commitments to implement the Kyoto Protocol
and are in various stages of formulating applicable regulations. Although Conoco
cannot yet estimate accurately the total actual expenditures that may be
incurred by it as a result of the Kyoto Protocol, such expenditures could be
substantial.

  HAZARDOUS WASTE

     Conoco currently owns or leases numerous properties that have been used for
many years for hard minerals production or natural gas and crude oil production.
Although Conoco used operating and disposal practices that were standard in the
industry at the time, wastes may have been disposed of or released on or under
the properties it owned or leased. In addition, some of these properties have
been operated by third parties over whom Conoco had no control.

     The Comprehensive Environmental Response, Compensation, and Liability Act
and comparable state statutes can impose liability for the entire cost of
clean-up upon each of the owners and operators of sites or on

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persons who disposed of or arranged for the disposal of hazardous waste found at
such sites. This liability can be imposed regardless of fault or the lawfulness
of the original disposal activity. The Resource Conservation and Recovery Act
and comparable state statutes govern the management and disposal of wastes.
Although CERCLA currently excludes petroleum from regulation, many state laws
affecting Conoco's operations impose clean-up liability for petroleum
contamination. In addition, although RCRA currently classifies some exploration
and production wastes as non-hazardous, such wastes could be reclassified as
hazardous wastes. If this occurs, exploration and production wastes would be
subject to more stringent requirements. If such a change in legislation were to
be enacted, it could have a significant impact on Conoco's operating costs, as
well as the gas and oil industry in general.

  OIL SPILLS

     Under the U.S. Federal Oil Pollution Act of 1990, the following can be held
liable regardless of fault for all removal costs and damage that result from a
discharge of oil into the navigable waters of the United States:

     - owners and operators of onshore facilities and pipelines;

     - lessees or permittees of an area in which an offshore facility is
       located; and

     - owners and operators of tank vessels.

     These damages include, for example, natural resource damages, real and
personal property damages and economic losses. The Oil Pollution Act limits the
liability of owners and operators for removal costs and damages that result from
a discharge of oil to $350 million in the case of onshore facilities, $75
million plus removal costs in the case of offshore facilities, and in the case
of tank vessels, an amount based on gross tonnage of the vessel. However, these
limits do not apply if the discharge was caused by gross negligence or willful
misconduct, or by the violation of an applicable Federal safety, construction or
operating regulation by the owner or operator, its agent or subcontractor or in
specified other circumstances.

     The Oil Pollution Act requires evidence of financial responsibility in an
amount of up to $150 million for some offshore facilities and also requires
offshore facilities, some onshore facilities and tank vessels to prepare spill
response plans, which Conoco has done, for responding to a "worst case
discharge" of oil. Failure to comply with these requirements or failure to
cooperate during a spill event may subject an owner or operator to civil or
criminal enforcement actions and penalties.

  OFFSHORE PRODUCTION

     Offshore oil and gas operations in U.S. waters are subject to regulations
of the United States Department of the Interior, which currently impose
liability regardless of fault upon the lessee under a Federal lease for the cost
of clean-up of pollution resulting from the lessee's operations, and such lessee
could be subject to liability for pollution damages. In the event of a serious
incident of pollution, the Department of the Interior may require a lessee under
Federal leases to suspend or cease operations in the affected areas.

SOURCES OF SUPPLY

     During 1998, Conoco supplemented its own crude oil production to meet its
refining requirements by the purchase of crude oil from both domestic and
international sources. Approximately 49 percent of the crude oil processed in
Conoco's U.S. refineries in 1998 came from U.S. sources. The remainder of crude
processed came principally from Venezuela, Mexico and Canada. During 1998,
Conoco's Humber refinery in the United Kingdom processed principally North Sea
crude oils. In the joint venture MiRO refinery, Conoco processed primarily
Mediterranean crude oils in 1998. Conoco's joint venture refineries in the Czech
Republic processed primarily Russian crudes.

     To assure availability, Conoco maintains multiple sources for most raw
materials, supplies, services and equipment, with no one company supplying a
substantial portion of Conoco's needs. Conoco also routinely leases or charters
equipment, such as drilling rigs, offshore supply boats, seismic boats, pipeline
laying equipment,

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derrick barges and cranes. Availability of supply and/or cost of such equipment
has been a factor in the past, and could have a detrimental impact on Conoco in
the future.

RESEARCH AND DEVELOPMENT

     The objectives of Conoco's research and development programs are to
discover new products, processes and business opportunities in relevant fields,
and to improve existing products and processes. Research and development also
focuses on optimizing existing assets and improving efficiency, safety and
environmental protection. Worldwide expenditures for research and development
amounted to approximately $42 million in 1998, $44 million in 1997 and $41
million in 1996.

PATENTS AND TRADEMARKS

     Conoco owns and is licensed under various patents, which expire from time
to time, covering many products, processes and product uses. No individual
patent is of material importance to Conoco's business as a whole. During 1998,
Conoco was granted seven U.S. and 28 non-U.S. patents. Conoco also has
individual trademarks and brands for its products and services which are
registered in various countries throughout the world. None of these trademarks
and brands is considered material other than the "Conoco" and "Jet" brands.

OPERATING HAZARDS AND INSURANCE

     Conoco's operations are subject to operating hazards such as well blowouts,
collapsed wells, explosions, uncontrolled flows of oil, natural gas or well
fluids, fires, formations with abnormal pressures, pipeline ruptures or spills,
refinery explosions, surface or marine transportation incidents, pollution,
releases of toxic gas and other environmental hazards and risks. In accordance
with customary industry practices, Conoco maintains insurance against some, but
not all, of such risks and losses. Given Conoco's risk profile and in accordance
with the practices of a number of major integrated, international energy
companies, Conoco does not carry business interruption insurance. Conoco's
decision not to carry business interruption insurance is based on several
factors, including its spread of risk over five wholly owned refineries, a
favorable loss history and loss prevention and safety programs. Conoco's
ownership of five refineries provides it with some ability to replace product
during periods of business interruption. Conoco has elected to retain the risk
where management believes the cost of insurance, although available, is
excessive relative to the risks presented. In addition, pollution and
environmental risks are generally not fully insurable.

PROPERTIES

     Conoco owns its corporate headquarters, consisting of 16 three-story
buildings on a 62-acre site in Houston, Texas. Conoco owns and leases petroleum
properties and operates production processing, refining, marketing,
power-generating and research and development facilities worldwide. In addition,
Conoco operates sales offices, regional purchasing offices, distribution centers
and various other specialized service locations throughout the world.

EMPLOYEES

     Conoco had approximately 16,650 employees as of December 31, 1998.
Approximately 1,400 employees at Conoco's U.S. refineries are represented by the
Oil, Chemical and Atomic Workers International Union under separate bargaining
agreements for each refinery. These agreements cover wages, benefit matters,
grievance procedures and various employment conditions, and Conoco believes they
are typical of the refining industry in the U.S. In 1999, Conoco will reduce
staff by approximately 975 positions to improve operational efficiencies by
combining some functions in the United States and by more broadly sharing
services and more effectively deploying employees. For more information about
this restructuring, see "Management's Discussion and Analysis of Financial
Condition and Results of Operations of Conoco -- Restructuring."

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LEGAL PROCEEDINGS

     On March 6, 1996, the Department of Justice filed a complaint in the United
States District Court for the District of Montana against Yellowstone Pipeline
Company and the Conoco Pipe Line Company as a 40 percent owner and operator of
Yellowstone Pipeline Company. The complaint alleges discharges of oil from a
Yellowstone Pipeline Company pipeline in January 1993 and seeks civil penalties
of up to $25,000 per day for each violation or up to $1,000 for each barrel of
oil discharged. The parties have reached an agreement to settle the case that
requires the parties to pay a penalty of $165,000 and construct a fish
passageway in the Jocko River to enhance the Bull Trout population. Final
settlement documents were entered by the court, and Conoco is in the process of
implementing the terms of the settlement agreement.

     On January 5, 1999, Conoco paid $105,000 in penalties and agreed to perform
remediation at a cost of $200,000 to settle allegations made on June 18, 1998 by
the New Mexico Environmental Department that Conoco had failed to obtain a Clean
Air Act permit and violated conditions in existing permits at the Maljamar Gas
Plant and the MCA field.

     On August 31, 1998, the Louisiana Department of Environmental Quality
issued a Notice of Violation against Conoco for failure to maintain equipment to
control emissions from the sulfur pits at the Lake Charles Refinery. On November
11, 1998, the department notified Conoco that it is seeking a fine of $300,000.
Conoco is contesting these allegations and the proposed penalty and is seeking a
hearing in this matter.

     On February 18, 1999, the Oklahoma Department of Environmental Quality
issued a Notice of Violation to Conoco's Ponca City refinery alleging violations
of the Oklahoma Air Pollution Control Rules. This Notice of Violation may result
in the Department seeking monetary sanctions in excess of $100,000. Conoco
intends to vigorously defend the matter.

     Conoco is subject to various lawsuits and claims involving a variety of
matters including, along with other oil companies, actions challenging oil and
gas royalty and severance tax payments based on posted prices, and claims for
damages resulting from leaking underground storage tanks. As a result of its
separation from DuPont, Conoco has also assumed responsibility for current and
future claims related to some discontinued chemicals and agricultural chemicals
businesses operated by Conoco in the past. Conoco cannot reasonably estimate the
effect on future financial results, because considerable uncertainty exists.
Conoco believes the ultimate liabilities resulting from such lawsuits and claims
may be material to results of operations in the period in which they are
recognized but that they will not materially affect the consolidated financial
position of Conoco.

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                                   MANAGEMENT

DIRECTORS AND EXECUTIVE OFFICERS

     Following is information concerning the current executive officers and
directors of Conoco. Each director holds office until his successor is duly
elected and qualified or until his resignation or removal if earlier. The board
is divided into three classes with staggered terms. Officers serve at the
discretion of the board and serve in their positions on a full-time basis.
Conoco's directors hold various positions as directors and executives of other
organizations, in addition to their duties as directors of Conoco. For more
information about the possible effects of Conoco's staggered board, see
"Description of Conoco Capital Stock -- Anti-Takeover Effects of Certificate and
By-Law Provisions -- Board of Directors."

<TABLE>
<CAPTION>
                                                                                                DIRECTORS TERM
NAME                                   AGE(1)                POSITION WITH CONOCO                  EXPIRING
- ----                                   ------                --------------------               --------------
<S>                                    <C>      <C>                                             <C>
Edgar S. Woolard, Jr. ...............    65     Chairman of the Board of Directors                   2001
Archie W. Dunham.....................    60     President, Chief Executive Officer and
                                                Director                                             2000
Ruth R. Harkin.......................    54     Director                                             2002
Frank A. McPherson...................    66     Director                                             2002
Gary M. Pfeiffer.....................    49     Director                                             2002
William K. Reilly....................    59     Director                                             2000
William R. Rhodes....................    63     Director                                             2001
Franklin A. Thomas...................    65     Director                                             2000
Gary W. Edwards......................    57     Executive Vice President, Refining, Marketing,
                                                Supply and Transportation
Robert E. McKee III..................    53     Executive Vice President, Exploration
                                                Production
Robert W. Goldman....................    57     Senior Vice President, Finance, and Chief
                                                Financial Officer
Rick A. Harrington...................    54     Senior Vice President, Legal, and General
                                                Counsel
</TABLE>

- ------------
(1) As of June 30, 1999.

     EDGAR S. WOOLARD, JR. has been a director since July 1998. He retired as
Chairman of the Board of Directors of DuPont on October 29, 1997, having served
since 1989. He was named Chairman of the Board of Conoco in July 1998. He
remains a director of DuPont. Since he joined DuPont in 1957, he occupied many
technical and managerial positions at various locations across the United
States. From 1987 to 1989, Mr. Woolard served as President and Chief Operating
Officer of DuPont, and from 1989 to 1995, as Chairman and Chief Executive
Officer. Mr. Woolard is a director of Citigroup Inc. and Apple Computer, Inc.
and a member of The Business Council, the Board of Trustees of Winterthur
Museum, the Christiana Care Corporation, the Protestant Episcopal Theological
Seminary in Virginia and the North Carolina Textile Foundation. He is also a
member of the National Academy of Engineering and the Bretton Woods Committee.

     ARCHIE W. DUNHAM has been a director since July 1998. He has been President
and Chief Executive Officer of Conoco since 1996. He joined Conoco in 1966 and
subsequently held a number of commercial and managerial positions within Conoco
and DuPont. He currently serves on both companies' boards of directors, but will
resign from DuPont's board upon the closing of the exchange offer. Mr. Dunham is
also a member of the boards of directors of Louisiana-Pacific Corporation and
Phelps Dodge Corporation. Mr. Dunham is a former Executive Vice President,
Exploration Production and Executive Vice President, Refining, Marketing, Supply
and Transportation for Conoco. He was also a Senior Vice President, Polymers and
Senior Vice President, Chemicals and Pigments for DuPont. He is a director of
the American Petroleum Institute, the U.S.-Russia Business Council and the
Greater Houston Partnership. He is Chairman of the United States Energy
Association, Vice-Chairman of the National Petroleum Council and a member of The
Business Council. Mr. Dunham is also a member of the Board of Visitors and the
Energy Center board of directors at the University of Oklahoma. He also serves
on the board of trustees of the Memorial Hermann Healthcare System

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in Houston, the Houston Grand Opera, the Houston Symphony, the George Bush
Presidential Library and the Smithsonian Institution.

     RUTH R. HARKIN has been a director since October 1998. She is Senior Vice
President, International Affairs and Government Relations of United Technologies
Corporation and Chair of United Technologies International, UTC's international
representation arm. Previously, Mrs. Harkin was the President and Chief
Executive Officer of the Overseas Private Investment Corporation in the Clinton
administration from 1993 to 1997. Mrs. Harkin was elected as a prosecutor in the
office of the County Attorney of Story County, Iowa in 1973. She also served as
Deputy General Counsel at the U.S. Department of Agriculture and was Of Counsel
at the law firm of Akin, Gump, Strauss, Hauer & Feld. Mrs. Harkin is a member of
the Board of Visitors of the College of Business Administration, University of
Iowa. She also sits on the boards of the Center for National Policy and the
National Association of Manufacturers.

     FRANK A. MCPHERSON has been a director since October 1998. He retired as
Chairman and Chief Executive Officer of Kerr-McGee Corporation on February 1,
1997. He joined Kerr-McGee in 1957 and held many technical, operational and
managerial positions, including President from 1980 to 1983. He is a past
director of the Federal Reserve Bank of Kansas City and the Oklahoma State
University foundation Board of Trustees. Mr. McPherson serves on the boards of
directors of Kimberly-Clark Corp., Bank of Oklahoma, Tri-Continental
Corporation, Seligman Quality Fund, Inc., Seligman Select Municipal Fund, Inc.
and the Seligman Group of Mutual Funds. He is also a member of the boards of the
American Petroleum Institute, Boys and Girls Clubs of America, Baptist Medical
Center, Oklahoma Chapter of Nature Conservancy, Oklahoma City Chamber of
Commerce, Oklahoma City Public School Foundation, Oklahoma Medical Research
Foundation and Oklahoma Foundation for Excellence in Education.

     GARY M. PFEIFFER has been a director since July 1998. He has been Senior
Vice President, Finance and Chief Financial Officer of DuPont since 1997. From
1994 to 1997, Mr. Pfeiffer was Vice President and General Manager of DuPont
Nylon, North America, with responsibility for all of DuPont's nylon fiber and
intermediates business in North America. He has also served as Global Business
Director, Nylon Intermediates for DuPont Chemicals from 1992 to 1994, and as
Director -- Finance for DuPont Chemicals and Specialties Manufacturing from 1991
to 1992. Since he joined DuPont in 1974, Mr. Pfeiffer has held a number of
technical and managerial positions in the United States and overseas. He is also
on the board of the Hagley Museum and Library.

     WILLIAM K. REILLY has been a director since October 1998. He is currently a
member of the board of directors of DuPont and is President and Chief Executive
Officer of Aqua International Partners, an investment group which finances water
improvements in developing countries. Formerly, Mr. Reilly was a visiting
professor at the Institute of International Studies at Stanford University and
served as Administrator of the U.S. Environmental Protection Agency from
February 1989 to January 1993. Mr. Reilly was president of the Conservation
Foundation from 1973 to 1989 and, after its affiliation with World Wildlife Fund
in 1985, served as President of both groups. He also serves on the boards of
Royal Caribbean International and Evergreen Holdings. He is Chairman of the
Board of the American Farmland Trust and serves on the boards of National
Geographic Society, World Wildlife Fund and Yale University. Mr. Reilly also
serves as a member of the board of the Presidio Trust of San Francisco.

     WILLIAM R. RHODES has served as a director since October 1998. He is a Vice
Chairman of Citibank, N.A., a principal subsidiary of Citigroup Inc. Mr. Rhodes
is Vice Chairman of the Institute of International Finance, a director of the
Private Export Funding Corporation, a trustee and member of the Executive
Council of the Council of the Americas, an Executive Committee member of the
Bretton Woods Committee and the U.S.-Russia Business Council, and a founding
member of the U.S. National Advisory Council to the International Management
Center. Other board memberships include The Group of Thirty, the Americas
Society, The African-American Institute, CHIPCo, and the U.S.-Egypt Presidents'
Council. He is also a member of the Council on Foreign Relations, the Foreign
Policy Association, and The Bankers Roundtable. Mr. Rhodes is a past Chairman of
the U.S. Advisory Committee of the Export-Import Bank of the United States, past
Chairman of the U.S. section of the Venezuela-U.S. Business Council, past
President of the Venezuela-American Chamber of Commerce, and past President of
the Bankers Association for Foreign Trade. He is a Governor and

                                       122
<PAGE>   123

Trustee of the New York and Presbyterian Hospital and a director of the New York
City Partnership and Chamber of Commerce. He serves as a trustee of Brown
University and Chairman of the Board of Trustees of the Northfield Mount Hermon
School.

     FRANKLIN A. THOMAS has been a director since October 1998. He has been a
consultant to the TFF Study Group, a non-profit initiative assisting development
in southern Africa, since April 1996. Mr. Thomas was President and Chief
Executive Officer of The Ford Foundation from 1979 to 1996. He also serves as a
director of ALCOA, Inc., Citigroup Inc., Cummins Engine Company, Inc., Lucent
Technologies, Inc. and PepsiCo, Inc.

     GARY W. EDWARDS has been Executive Vice President of Conoco since 1991,
with responsibility for worldwide refining, marketing, supply and transportation
and was a Senior Vice President of DuPont until October 27, 1998. He joined
Conoco in 1963, working at various locations throughout the United States and in
the United Kingdom, and was formerly Conoco's Vice President, Refining Marketing
Europe; Vice President Refining, Marketing and Transportation; and Vice
President North American Marketing. Mr. Edwards has held a number of managerial
positions in Conoco Pipeline, Transportation, Natural Gas and Gas Products,
Logistics and Marketing. He is a Director of the American Petroleum Institute
and a previous director and Vice President of the European Petroleum Industry
Association in Brussels, Belgium. Mr. Edwards is a member of the Kansas State
University Engineering advisory council, and serves on the boards of the
Yellowstone Park Foundation, Theatre Under the Stars, Junior Achievement, Inc.
(National) as well as Junior Achievement of Southeast Texas, Target Hunger,
Private Sector Initiative, and the Houston Music Hall Foundation.

     ROBERT E. MCKEE III has been an Executive Vice President for Conoco since
1992, with responsibility for worldwide exploration and production and was a
Senior Vice President of DuPont until October 27, 1998. He was formerly Conoco's
Executive Vice President for Corporate Strategy and Development, Senior Vice
President for Administration, Vice President of North American Refining and
Marketing and Vice President, Chairman and Managing Director of Conoco (UK)
Limited. Since he joined Conoco in 1967, Mr. McKee has worked at various
locations and held numerous managerial, operating, administrative and technology
positions both in the United State and overseas. He currently serves on the
board of directors of the American Petroleum Institute and is a former director
of Consol Energy Inc. and Consol Inc. In addition, he is Chairman of the
Southern Regional Advisory Board of the Institute of International Education and
a member of the advisory committee of the University of Texas Engineering
Department. Mr. McKee also serves as Chairman of the President's Council of the
Colorado School of Mines.

     ROBERT W. GOLDMAN has been Senior Vice President, Finance, and Chief
Financial Officer of Conoco since 1998 and was its Vice President, Finance from
1991 to 1998. Mr. Goldman began his career with DuPont in 1965 and subsequently
held many technical and managerial positions within the finance, tax and
treasury functions. He is the former Vice President-Finance of DuPont (Mexico),
Vice President, Remington Arms Company and served as Director and Comptroller of
several operating departments of DuPont in Wilmington, Delaware. Mr. Goldman
transferred to Conoco in 1988 as Vice President and Controller. He is
co-chairman of Conoco's Risk Management Committee and is a member of the
American Petroleum Institute, a former chairman of its Accounting Committee and
currently serves on its Executive Committee of the General Committee on Finance.
He is also a member of the Financial Executives Institute and the Executive
Committee of the Board of Directors of the Alley Theatre in Houston, Texas.

     RICK A. HARRINGTON has been Senior Vice President, Legal, and General
Counsel of Conoco since 1998 and was Vice President and General Counsel of
Conoco and Vice President and Assistant General Counsel of DuPont from 1994
until October 27, 1998. He joined DuPont in 1979 as a Senior Attorney, and
subsequently held the positions of Managing Counsel, Special Litigation, and
Vice President and General Counsel of Consolidation Coal Company. Prior to
joining DuPont, he was a partner in the firm of Arent, Fox, Kintner, Plotkin and
Kahn in Washington, D.C. where he specialized in antitrust litigation. Mr.
Harrington is a member of the bar of the District of Columbia, the District of
Columbia Court of Appeals and the Fifth Circuit Court of Appeals. He is
co-chairman of Conoco's Risk Management Committee and a director of the American
Corporate Counsel Association and is a member of its Policy Committee. He is
also a member of the American Petroleum Institute General Committee on Law and
the University of Kansas School of Business Dean's Board.

                                       123
<PAGE>   124

     Under the terms of the separation agreement, DuPont has the right to
designate for nomination a majority of Conoco's board of directors so long as it
owns shares representing 50 percent of the voting power in Conoco. If after the
exchange offer DuPont retains Conoco Class B common stock representing more than
10 percent of the voting power in Conoco, it will have the right to designate
for nomination a number of Conoco directors proportionate to its voting power.
If DuPont retains Conoco Class B common stock representing 10 percent or less of
the voting power in Conoco, it will no longer be entitled to nominate any Conoco
directors.

     DuPont's designees on the Conoco board are currently Messrs. Woolard,
Pfeiffer, Reilly, Rhodes and Thomas. Promptly after the closing of the exchange
offer, Messrs. Woolard and Pfeiffer will resign from the Conoco board. Mr.
Dunham has asked Messrs. Reilly, Rhodes and Thomas to continue to serve as
directors after the exchange offer. It is anticipated that Mr. Dunham will
become the Chairman of the Board upon Mr. Woolard's resignation. The resignation
of Messrs. Woolard and Pfeiffer will leave three vacancies on the Conoco board,
which will be filled as soon as practicable by a vote of the directors remaining
in office. Two directors will be elected to fill Messrs. Woolard and Pfeiffer's
unexpired terms, and one will be elected for a term expiring 2001.

ELECTION AND COMPENSATION OF DIRECTORS

     Conoco's restated certificate of incorporation provides that the board of
directors will consist of not less than six nor more than 15 directors. The
board of directors is classified into three classes. Each class consists, as
nearly as may be possible, of one-third of the total number of directors
constituting the entire board of directors. The terms of office of the members
of one class of directors expire each year in rotation so that the members of
one class are elected at each annual meeting to serve for full three-year terms,
or until their successors are elected and qualified. The current number of
authorized directors is set at nine, but only eight positions are occupied.

     Directors who are employees of Conoco or DuPont receive no additional
compensation for serving on the board of directors. At the time of the initial
public offering, each nonemployee member of the board of directors received a
special grant of stock options to purchase 3,900 shares of Class A common stock
and a grant of 4,135 restricted stock units with respect to Class A common
stock. Future nonemployee directors, upon election to the board, will receive a
grant of restricted stock units with an aggregate value on the date of grant
equal to $95,000. On an annual basis, nonemployee directors will receive a fee
of $30,000, a grant of restricted stock units with an aggregate value on the
date of grant of $20,000, and options to purchase common stock with a present
value on the date of grant of $30,000.

     Conoco awards stock options and restricted stock units under the terms of
its 1998 Stock and Performance Incentive Plan. Stock options have a term of ten
years and become exercisable in increments of one-third of the total grant on
the first, second and third anniversaries of the grant. The present value of
stock options is determined using a generally accepted stock option valuation
methodology. Restricted stock units are grants of units representing common
stock. Shares underlying restricted stock units granted to directors may not be
sold or voted for a period of three years, but dividend equivalents in the form
of additional units are credited during such period. Restricted stock units vest
immediately upon grant and stock options vest after six months of service as a
director.

     Annual fees and awards of restricted stock units may be deferred under the
terms of Conoco's Deferred Compensation Plan for Nonemployee Directors, which is
established under the 1998 Stock and Performance Incentive Plan. An election to
defer must generally be made before the fiscal year in which it will be earned.
Once made, the election is generally irrevocable for the first year. The
deferred amounts are deemed to be invested, under the election of the
participant, in common stock or in an interest-bearing account.

     Each deferral election will indicate the time and form of payment for the
amounts to be deferred. Distributions will be made in cash or common stock to
the participant at the time irrevocably selected on the deferral form, or, in
the event of the participant's death, to the participant's designated
beneficiary. Upon a change in control of Conoco, at the director's election, all
deferred amount, including deferred restricted stock units, may be paid in full.

                                       124
<PAGE>   125

     Board members are also eligible to participate in the Directors' Charitable
Gift Plan. This plan provides that, upon a director's death, Conoco will donate
$200,000 per year for five years to tax-exempt educational institutions or
charitable organizations recommended by the director and approved by Conoco.
Each director will be fully vested in the Directors' Charitable Gift Plan after
completing one year of service as director. Conoco may fund the Directors'
Charitable Gift Plan through, among other vehicles, the purchase of life
insurance policies on the lives of the directors. Conoco will be the beneficiary
of and will own these policies. Employee directors may elect to participate in
the plan if they bear their allocable cost of the plan. Directors derive no
personal financial or tax benefit from the Directors' Charitable Gift Plan
because the charitable, tax-deductible donations and insurance proceeds, if any,
accrue solely to the benefit of Conoco.

     A board member who serves as chairman of a standing board committee
receives a supplement of $5,000 annually. No additional fees are paid for
serving on board committees or for attending board or committee meetings.

     In lieu of the compensation payable to nonemployee directors described
above, other than participation in the Directors' Charitable Gift Plan, Edgar S.
Woolard, Jr., Chairman of the Board, is entitled to receive an annual fee of
$300,000 and annual equity grants with a present value on the date of grant of
$700,000. Conoco granted Mr. Woolard 4,350 restricted stock units with respect
to Class A common stock and nonqualified options to purchase 170,000 shares of
Class A common stock at the closing of the initial public offering. This grant
covers Mr. Woolard's first two years of service as a director. Restricted stock
units and stock options are granted under the 1998 Stock and Performance
Incentive Plan and have provisions consistent with those of the other
nonemployee directors.

COMMITTEES OF THE BOARD OF DIRECTORS

  AUDIT AND COMPLIANCE COMMITTEE

Members:         Frank A. McPherson, Chairman
                 Ruth R. Harkin
                 Gary M. Pfeiffer
                 William R. Rhodes

Number of meetings in 1998:
                        Two

Principal Functions:
                 The Audit and Compliance Committee is responsible for:

                 - overseeing Conoco's internal control structure, financial
                   reporting, and legal and ethical compliance program,
                   including strategic oversight of corporate safety, health and
                   environmental policy and direction;

                 - selecting an independent accounting firm, subject to
                   stockholder ratification, to audit Conoco's financial
                   statements;

                 - requesting that Conoco's subsidiaries engage independent
                   accountants, as deemed appropriate by the committee, to audit
                   their respective financial statements;

                 - receiving and acting on reports and comments from Conoco's
                   independent accountants;

                 - reviewing significant accounting principles employed in
                   Conoco's financial reporting;

                 - reviewing and recommending approval of Conoco's annual
                   financial statements;

                 - maintaining direct lines of communication with the board of
                   directors and Conoco's management, internal auditing staff
                   and independent accountants; and

                 - reporting to the board of directors a summary of its findings
                   and recommendations.

                                       125
<PAGE>   126

  COMPENSATION COMMITTEE

Members:         Franklin A. Thomas, Chairman
                 William K. Reilly
                 Edgar S. Woolard, Jr.

Number of Meetings in 1998:
                        Two

Principal Functions:
                 The Compensation Committee is responsible for:

                 - overseeing and administering Conoco's executive compensation
                   policies, plans and practices;

                 - approving and/or recommending to the board of directors
                   levels of compensation for the President and Chief Executive
                   Officer, as well as stock options; performance awards and
                   other stock-based awards for employee directors and senior
                   management;

                 - administering grants to management under Conoco's stock-based
                   compensation plans and adopting and/or recommending to the
                   full board of directors new plans or changes in these
                   programs; and

                 - overseeing succession planning for the Chief Executive
                   Officer and other key executives.

STOCK OWNERSHIP OF DIRECTORS AND EXECUTIVE OFFICERS

     The following table sets forth the number of shares of Class A common stock
beneficially owned on May 31, 1999, by each Conoco director, executive officer
named in the summary compensation table below and all directors and executive
officers as a group. None of such individuals owns Class B common stock. The
persons named in the table have sole voting power and investment power with
respect to all shares of Class A common stock shown as beneficially owned by
them, subject to community property laws where applicable and the information
contained in the notes to the table.

                           BENEFICIAL OWNERSHIP TABLE

<TABLE>
<CAPTION>
                                                               SHARES
                                                            BENEFICIALLY    PERCENT OF
NAME                                                        OWNED(1)(2)       CLASS
- ----                                                       --------------   ----------
<S>                                                        <C>              <C>
Edgar S. Woolard, Jr.....................................       12,376(3)     *
Archie W. Dunham.........................................    2,677,620(4)      1.4%
Ruth R. Harkin...........................................        6,160        *
Frank A. McPherson.......................................        7,775        *
Gary M. Pfeiffer.........................................           --        --
William K. Reilly........................................        5,116        *
William R. Rhodes........................................        4,160        *
Franklin A. Thomas.......................................        4,160        *
Gary W. Edwards..........................................    1,262,134        *
Robert E. McKee III......................................    1,001,421(5)     *
Robert W. Goldman........................................      305,269        *
Rick A. Harrington.......................................      307,887        *
Directors and Executive Officers as a Group (12
  persons)...............................................    5,594,076         2.9%
</TABLE>

- ---------------

  * Less than 1%

(1) Includes restricted or deferred stock units credited under the 1998 Stock
    and Performance Incentive Plan and the Deferred Compensation Plan for
    Nonemployee Directors, the following number of which may be voted or sold
    only upon the passage of time: Mr. Woolard -- 4,376; Mr. Dunham -- 81,064;
    Ms. Harkin -- 4,160; Mr. McPherson -- 5,275; Mr. Reilly -- 5,116; Mr.
    Rhodes -- 4,160; and Mr. Thomas -- 4,160.

                                       126
<PAGE>   127

(2) Includes beneficial ownership of the following number of shares of Class A
    Common Stock which may be acquired within 60 days of May 31, 1999 through
    stock options awarded under compensation plans: Mr. Dunham -- 2,450,870; Mr.
    Edwards -- 1,233,596; Mr. McKee -- 986,740; Mr. Goldman -- 298,583; and Mr.
    Harrington -- 301,528. Of such options, the following number are subject to
    stock price hurdles which have not yet been met: Mr. Dunham -- 392,846; Mr.
    Edwards -- 182,324; Mr. McKee -- 173,427; Mr. Goldman -- 52,562; and Mr.
    Harrington -- 80,349.

(3) Includes 3,000 shares owned by Mr. Woolard's wife.

(4) Includes 10,100 shares held in Dunham Management Trust, a revocable grantor
    trust.

(5) Includes 200 shares owned by Mr. McKee's son.

COMPENSATION OF EXECUTIVE OFFICERS

     Until October 1998, the executive officers named in the table below
participated in DuPont's compensation plans. The following table provides
information about the compensation of Conoco's chief executive officer and four
other most highly compensated executive officers during 1997 and 1998 without
regard to whether compensation was provided under DuPont's plans or Conoco's
plans. Two additional tables provide detailed information about these employees'
stock options.

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                         LONG-TERM
                                                                                       COMPENSATION
                                                  ANNUAL COMPENSATION             -----------------------
                                        ---------------------------------------                  SHARES
                                                                     OTHER        RESTRICTED   UNDERLYING
NAME AND                                                            ANNUAL          STOCK       OPTIONS        ALL OTHER
PRINCIPAL POSITION               YEAR    SALARY     BONUS(1)    COMPENSATION(2)   AWARDS(3)    GRANTED(4)   COMPENSATION(5)
- ------------------               ----   --------   ----------   ---------------   ----------   ----------   ---------------
<S>                              <C>    <C>        <C>          <C>               <C>          <C>          <C>
Archie W. Dunham...............  1998   $901,261   $1,300,000       $29,946       $1,100,090   1,693,040        $51,750
  President, Chief Executive     1997    667,500    1,450,000        33,075                      794,936         39,950
  Officer and Director
Gary W. Edwards................  1998    469,460      389,000        16,347                      567,974         27,620
  Executive Vice President,      1997    431,320      725,000        24,044                      364,648         25,715
  Refining, Marketing, Supply
  and Transportation
Robert E. McKee III............  1998    418,775      372,000        30,573                      561,677         24,563
  Executive Vice President,      1997    374,400      718,000        16,612                      346,854         22,247
  Exploration Production
Robert W. Goldman..............  1998    262,750      140,000         6,211                      164,191         15,390
  Senior Vice President,         1997    236,700      292,000         1,513                      105,672         13,958
  Finance, and Chief Financial
  Officer
Rick A. Harrington.............  1998    264,500      172,000         1,760                      198,411         15,600
  Senior Vice President, Legal,  1997    229,500      325,000         4,703                      163,716         13,598
  and General Counsel
</TABLE>

- ---------------

(1) On average, approximately 25% of 1998 variable compensation (i.e., bonus)
    was paid in Class A common stock, and about 25% of 1997 variable
    compensation was paid in DuPont common stock.

(2) Other annual compensation consists solely of the reimbursement for the
    payment of taxes.

(3) For 1998, Mr. Dunham received 47,830 restricted stock units with respect to
    Class A common stock valued at $23 per unit. The stock units vest two years
    from the date of grant. During the two-year period, dividend equivalents
    will be credited to Mr. Dunham's account in the form of additional units.
    These restricted stock units had an aggregate value of $998,451 on December
    31, 1998 based on the closing price on the New York Stock Exchange on such
    date of $20.875.

(4) Reflects, for 1998, new grants of Conoco stock options and, for 1997 and
    1998, replacement grants of Conoco stock options at the time of the initial
    public offering resulting from the election of the officers to surrender
    DuPont stock options granted in 1997 and 1998 and receive Conoco stock
    options having an equivalent appreciated value at the time of the initial
    public offering. The number of shares of Class A

                                       127
<PAGE>   128

    common stock covered by the replacement stock options was calculated by
    multiplying the number of shares of DuPont common stock subject to the
    original DuPont options by a factor of 2.7376, and the exercise price of the
    options was decreased by dividing the original exercise price by the same
    factor.

(5) 1998 amounts consist of matching contributions made under Conoco's Thrift
    Plan and the following amounts credited under DuPont's savings restoration
    plan: Mr. Dunham -- $42,150; Mr. Edwards -- $18,020; Mr. McKee -- $14,963;
    Mr. Goldman -- $5,790 and Mr. Harrington -- $6,000.

                              OPTION GRANTS TABLE

<TABLE>
<CAPTION>
                                                          INDIVIDUAL OPTION GRANTS IN 1998(1)(2)          POTENTIAL REALIZABLE
                                                      -----------------------------------------------       VALUE AT ASSUMED
                                                      NUMBER OF     PERCENT                               ANNUAL RATES OF STOCK
                                                        SHARES      OF TOTAL                             APPRECIATION FOR OPTION
                                                      UNDERLYING    OPTIONS                                      TERM(5)
                                                       OPTIONS      GRANTED     EXERCISE   EXPIRATION   -------------------------
NAME                                                   GRANTED     IN 1998(3)   PRICE(4)      DATE          5%            10%
- ----                                                  ----------   ----------   --------   ----------   -----------   -----------
<S>                                                   <C>          <C>          <C>        <C>          <C>           <C>
Archie W. Dunham....................................    388,740      11.83%      $21.73    02/03/2008   $ 5,313,532   $13,465,565
                                                      1,304,300      16.40        23.00    10/20/2008    18,866,178    47,810,551
Gary W. Edwards.....................................    132,774       4.04        21.73    02/03/2008     1,814,835     4,599,159
                                                        435,200       5.47        23.00    10/20/2008     6,294,994    15,952,735
Robert E. McKee III.................................    126,477       3.85        21.73    02/03/2008     1,728,764     4,381,037
                                                        435,200       5.47        23.00    10/20/2008     6,294,994    15,952,735
Robert W. Goldman...................................     40,791       1.24        21.73    02/03/2008       557,556     1,412,959
                                                        123,400       1.55        23.00    10/20/2008     1,784,932     4,523,363
Rick A. Harrington..................................     75,011       2.28        21.73    02/03/2008     1,025,295     2,598,306
                                                        123,400       1.55        23.00    10/20/2008     1,784,932     4,523,363
</TABLE>

- ---------------

(1) All options have a term of ten years and become exercisable in increments of
    one-third of the total grant on the first, second and third anniversaries of
    the grant. In addition, the options expiring on February 3, 2008 were to
    become exercisable only upon a 20% increase in the price of DuPont's common
    stock, which has occurred.

(2) The options expiring on February 3, 2008 were originally granted with
    respect to DuPont common stock and the amounts shown represent the number of
    shares of Conoco Class A common stock resulting from the replacement in
    October 1998 of outstanding DuPont options with Conoco stock options, which
    was intended to preserve the economic value of the DuPont options in
    connection with the initial public offering. The number of shares of Conoco
    Class A common stock covered by the replacement options was calculated by
    multiplying the number of shares of DuPont common stock subject to the
    original options by a factor of 2.7376, and the exercise price of the
    options was decreased by dividing the original exercise price by the same
    factor.

(3) Percent of total options granted to Conoco employees.

(4) The original exercise price for the options expiring on February 3, 2008 was
    the average of the high and low prices of the DuPont common stock as
    reported on the New York Stock Exchange Composite Transactions Tape on
    February 4, 1998, the date of the grant. Such exercise price was adjusted by
    dividing it by a factor of 2.7376 upon the replacement of the DuPont stock
    options with Conoco stock options. The exercise price for the options
    expiring on October 20, 2008 was the initial public offering price of
    Conoco's Class A common stock on October 21, 1998, the date of the grant.

(5) Represents total appreciation over the exercise price at the assumed annual
    appreciation rates of 5% and 10% compounded annually for the term of the
    options.

                                       128
<PAGE>   129

                             OPTION EXERCISES TABLE
                (Aggregated Option Exercises in Last Fiscal Year
                          and Year-end Option Values)

<TABLE>
<CAPTION>
                                                                           NUMBER OF SHARES
                                                                              UNDERLYING               VALUE OF UNEXERCISED
                                                                        UNEXERCISED OPTIONS AT         IN-THE-MONEY OPTIONS
                                            SHARES                         DECEMBER 31, 1998          AT DECEMBER 31, 1998(2)
                                          ACQUIRED ON      VALUE      ---------------------------   ---------------------------
                  NAME                     EXERCISE     REALIZED(1)   EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
                  ----                    -----------   -----------   -----------   -------------   -----------   -------------
<S>                                       <C>           <C>           <C>           <C>             <C>           <C>
Archie W. Dunham........................      --            --         1,928,446      2,085,886     $16,449,027     $666,895
Gary W. Edwards.........................      --            --         1,007,016        750,298       9,444,625      309,513
Robert E. McKee III.....................      --            --           771,156        735,104       6,502,665      294,410
Robert W. Goldman.......................      --            --           232,426        216,753       1,955,829       89,229
Rick A. Harrington......................      --            --           196,177        278,760       1,166,709      136,400
</TABLE>

- ---------------

(1) No Conoco stock options were exercised in 1998. DuPont stock options were
    exercised by the following officers in the amounts indicated: Mr. McKee,
    14,708 shares with a realized value of $487,878; Mr. Goldman, 8,406 shares
    with a realized value of $292,078; and Mr. Harrington, 23,492 shares with a
    realized value of $925,806. The realized value represents the pre-tax gain,
    which is the difference between the market value of the shares on the date
    of exercise of the options and the exercise price.

(2) Represents the closing price as reported on the New York Stock Exchange for
    Class A common stock on December 31, 1998 of $20.875, less the exercise
    price for all outstanding exercisable and unexercisable options for which
    the exercise price is less than such closing price. Exercisable options have
    been held at least one year from the date of grant and have met applicable
    stock price hurdles. Unexercisable options have been held for less than one
    year or have not met the applicable stock price hurdles.

RETIREMENT BENEFITS

     Retirement benefits for Conoco employees are provided under the DuPont
Pension and Retirement Plan, and are based on an employee's years of service and
average monthly pay during the employee's three highest paid years. Average
monthly pay for this purpose includes regular compensation and 100% of annual
variable compensation payments, but excludes other bonuses and compensation in
excess of limits imposed by the Internal Revenue Code of 1986. The Code limits
the amount of annual benefits which may be payable from the pension trust.
Retirement benefits in excess of these limitations are paid from Conoco's
general revenues under separate, nonfunded pension restoration plans.

     Effective as of the date DuPont owns securities representing less than 80%
of the voting power and 80% or more of the economic value of all outstanding
shares of common stock, Conoco will establish its own retirement plan. For
information about the transfer of assets from DuPont's retirement plan to
Conoco's retirement plan, see "Arrangements Between Conoco and
DuPont -- Employee Matters Agreement."

     The table below illustrates the straight-life annuity amounts payable under
the DuPont Pension and Retirement Plan and retirement restoration plans to
Conoco employees retiring at age 65 in 1998. These amounts reflect an offset
based on Social Security benefits. The current years of service credited for
retirement benefits for the Named Officers are as follows: 33 years for Archie
W. Dunham; 35 years for Gary W. Edwards; 31 years for Robert E. McKee III; 33
years for Robert W. Goldman; and 19 years for Rick A. Harrington.

                               PENSION PLAN TABLE

<TABLE>
<CAPTION>
                                               ESTIMATED ANNUAL RETIREMENT BENEFITS ON SERVICE OF:
                                             -------------------------------------------------------
     SALARY AND VARIABLE COMPENSATION         30 YEARS       35 YEARS       40 YEARS       45 YEARS
     --------------------------------        ----------     ----------     ----------     ----------
<S>                                          <C>            <C>            <C>            <C>
$ 450,000..................................  $  208,000     $  244,000     $  280,000     $  316,000
   900,000.................................     424,000        496,000        568,000        640,000
 1,350,000.................................     640,000        748,000        856,000        964,000
 1,800,000.................................     856,000      1,000,000      1,144,000      1,288,000
 2,250,000.................................   1,072,000      1,252,000      1,432,000      1,612,000
 2,700,000.................................   1,288,000      1,504,000      1,720,000      1,936,000
</TABLE>

                                       129
<PAGE>   130

SEVERANCE ARRANGEMENTS

     On May 10, 1998, Conoco entered into a severance agreement with Archie W.
Dunham. The severance agreement has an initial term of three years, which term
will be extended, if necessary, upon any "change in control," as such term is
defined in the severance agreement, so that the severance agreement will expire
no earlier than 24 months after such event. The severance agreement provides
that if, during the term of the severance agreement, Mr. Dunham's employment is
terminated by Conoco other than for cause, or by reason of Mr. Dunham's death or
disability, or if Mr. Dunham terminates his employment for "good reason", as
defined in the severance agreement, Mr. Dunham will be entitled to:

     - a lump sum severance payment equal to three times the sum of his base
       salary and previous year's bonus;

     - 36 months of benefits continuation;

     - a pro rata portion of the annual bonus for which he is eligible in the
       year of termination; and

     - vesting of any unvested equity-based awards from Conoco.

Mr. Dunham will also be entitled to terminate his employment and receive these
benefits if, prior to the second anniversary of the initial public offering or
after DuPont reduces its ownership to less than 50%, he is not appointed as
Chairman of the Board of Conoco, unless his employment had previously terminated
by reason of death, disability or for cause. Mr. Dunham will also be entitled to
receive an additional payment sufficient to compensate him for the amount of any
excise tax imposed on payments made under the severance agreement or otherwise
pursuant to Section 4999 of the Code and for any taxes imposed on that
additional payment.

     Conoco has established the Conoco Inc. Key Employee Severance Plan, which
covers key employees of Conoco, including Gary W. Edwards, Robert E. McKee III,
Robert W. Goldman and Rick A. Harrington. The plan provides that if the
employment of a participant in the plan is terminated

     - within two years of a "change in control" of Conoco; or

     - after a "potential change in control" of Conoco but prior to a change in
       control, whether or not a change in control ever occurs, in either case
       by Conoco other than for "cause" or by the participant for "good reason",
       as such terms are defined in the plan, the participant will be entitled
       to:

        (a) a lump sum severance payment equal to two or three times the sum of
            his base salary and previous year's bonus;

        (b) 24 or 36 months of benefits continuation; and

        (c) a pro rata portion of the annual bonus for which he is eligible in
            the year of termination and, if necessary, a gross-up payment
            sufficient to compensate the participant for the amount of any
            excise tax imposed on payment made under the plan or otherwise
            pursuant to Section 4999 of the Code and for any taxes imposed on
            such an additional payment.

     The plan has a three-year term commencing on May 10, 1998, which term will
be extended, if necessary, upon a change in control so that it expires no
earlier than 24 months after such an event. Amounts payable under the plan will
be in lieu of any payments or benefits that may be payable to the severed
employee under any other plan, policy or program of Conoco relating to
severance.

     Conoco has also established both the Conoco Inc. Key Employee Temporary
Severance Plan and the Conoco Inc. Temporary Severance Plan, each of which
covers key Conoco employees, including the officers named in the summary
compensation table. Under the Key Employee Temporary Severance Plan, if the
employment of a participant is involuntarily terminated due to a reduction in
force or if a participant experiences specified adverse employment changes,
including relocation and reductions in pay or position, the individual will be
entitled to one year's base salary and variable bonus. The Key Employee
Temporary Severance Plan expires in 2001. Under the Temporary Severance Plan,
benefits are paid to a participant upon termination of employment in the same
circumstances as are described under the Key Employee Temporary Severance Plan,
but only if such termination occurs after a "change in control", as defined in
the Temporary Severance Plan. Benefits under the Temporary Severance Plan are
equal to two weeks' pay for each completed year of service, up to a maximum of
52 weeks' pay. Amounts payable under both the Key Employee Temporary Severance
Plan and the Temporary Severance Plan are reduced by amounts payable pursuant to
any other severance plan, policy or program of Conoco.

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<PAGE>   131

                 PRINCIPAL STOCKHOLDERS OF CONOCO COMMON STOCK

     The following table sets forth information regarding the beneficial
ownership as of June 30, 1999 of shares of Class A and Class B common stock by
DuPont and each other person or entity known to Conoco to be a beneficial owner
of five percent or more of Conoco's voting securities.

                          PRINCIPAL STOCKHOLDERS TABLE

<TABLE>
<CAPTION>
                                                         CLASS A COMMON STOCK     CLASS B COMMON STOCK
                                                         ---------------------   ----------------------
                                                           NUMBER     PERCENT      NUMBER      PERCENT
NAME AND ADDRESS                                         OF SHARES    OF CLASS    OF SHARES    OF CLASS
- ----------------                                         ----------   --------   -----------   --------
<S>                                                      <C>          <C>        <C>           <C>
E. I. du Pont de Nemours and Company...................      --          --      436,543,573     100%(1)
  1007 Market Street
  Wilmington, Delaware 19898
Putnam Investments, Inc. and related entities(2).......  13,654,179     7.1%         --         --
  One Post Office Square
  Boston, Massachusetts 02109
Ark Asset Management Co., Inc.(3)......................  11,278,200     5.9%         --         --
  125 Broad Street
  New York, New York 10004
Citigroup Inc.(4)
  153 East 53rd Street
  New York, New York 100043............................  10,259,914     5.4%         --         --
Scudder Kemper Investments, Inc.(5)....................   9,693,000     5.1%         --         --
  345 Park Avenue
  New York, New York 10154
</TABLE>

- ---------------
(1) Shares of Class B common stock have five votes per share. Accordingly,
    DuPont's ownership of Class B common stock represents approximately 92% of
    the combined voting power of the Class A and Class B common stock.

(2) Based on a Schedule 13G filed with the SEC on February 4, 1999 by Putnam
    Investments, Inc. ("PI"), a subsidiary of Marsh & McLennan Companies, Inc.
    ("MMC"), on behalf of itself, MMC, Putnam Investment Management, Inc.
    ("PIM") and The Putnam Advisory Company, Inc. ("PAC"). Consists of
    12,483,788 shares beneficially owned by PIM and 1,170,391 shares
    beneficially owned by PAC, both wholly owned registered investment advisors
    of PI. Both subsidiaries have dispositive power over the shares as
    investment managers, but each of the mutual funds' trustees have voting
    power over shares held by each fund, and PAC has shared voting power over
    the shares held by institutional clients. The address of MMC is 1166 Avenue
    of the Americas, New York, New York 10036.

(3) Based on a Schedule 13G filed with the SEC on February 4, 1999.

(4) Based on a Schedule 13G filed with the SEC on February 12, 1999. Consists
    entirely of shares beneficially owned by subsidiaries of Citigroup Inc.
    which individually qualify to file a Schedule 13G but whose beneficial
    ownership does not exceed 5%. Citigroup Inc. has shared voting and
    dispositive power over all these shares, but disclaims beneficial ownership
    of all such shares.

(5) Based on a Schedule 13G filed with the SEC on February 11, 1999. Scudder
    Kemper Investments, Inc. has sole voting power with respect to 3,253,300
    shares, shared voting power with respect to 6,013,300 shares, sole
    dispositive power with respect to 9,488,800 shares and shared dispositive
    power with respect to 204,200 shares.

                                       131
<PAGE>   132

                 PRINCIPAL STOCKHOLDERS OF DUPONT COMMON STOCK

     As of June 30, 1999, Wilmington Trust Corporation, Wilmington, Delaware,
beneficially owned an aggregate of 70,883,079 shares of DuPont's common stock,
or 6.2 percent of such shares outstanding at the time. The shares held by
Wilmington Trust are held of record for trust, estate, custody or agency
accounts and at June 30, 1999 included 10,050,727 shares held in the DuPont
Flexitrust, a trust created by DuPont to satisfy obligations of DuPont under
various employee benefit and compensation plans. Based on public filings, there
is no reported stockholder that owns five percent or more of either series of
DuPont preferred stock.

                        SHARES ELIGIBLE FOR FUTURE SALE

     Shares of Conoco Class B common stock distributed to stockholders of DuPont
will be freely transferable, except for shares received by persons who may be
deemed to be "affiliates" of Conoco under the Securities Act. Affiliates
generally include individuals or entities that control, are controlled by, or
are under common control with, Conoco. The directors and principal executive
officers of Conoco, as well as significant stockholders of Conoco will be
affiliates. Affiliates of Conoco may sell their shares of Conoco Class B common
stock only under an effective registration statement under the Securities Act or
an exemption from the registration requirements of the Securities Act.

                                       132
<PAGE>   133

                      DESCRIPTION OF CONOCO CAPITAL STOCK

GENERAL

     The authorized capital stock of Conoco consists of:

     - 3.0 billion shares of Class A common stock, par value $.01 per share;

     - 1.6 billion shares of Class B common stock, par value $.01 per share; and

     - 250 million shares of preferred stock, par value $.01 per share.

There is no preferred stock outstanding on the date of this document. As of May
14, 1999, there were approximately 190.8 million shares of Class A common stock
and 436.5 million shares of Class B common stock outstanding. DuPont owns all
the Class B common stock.

     The following is a description of the material terms of Conoco's
certificate of incorporation affecting the relative rights of Conoco's capital
stock. The following description of the capital stock of Conoco is intended as a
summary only. For complete information, you should read Conoco's certificate of
incorporation and by-laws incorporated by reference as an exhibit to the
registration statement of which this document forms a part. To find out where
you can get copies of these documents, see "Where You Can Find More Information"
on page 154.

COMMON STOCK

  VOTING RIGHTS

     The holders of Class A common stock and Class B common stock generally have
identical rights, except that holders of Class A common stock have one vote per
share while holders of Class B common stock have five votes per share.
Generally, matters to be voted on by stockholders, including amendments to the
certificate of incorporation, must be approved by a majority vote of the holders
of Conoco common stock, voting together as a single class, subject to any voting
rights granted to holders of any preferred stock. However, a majority vote of
the affected class, voting separately, is also necessary for amendments of the
certificate of incorporation that would adversely affect the rights of the Class
A common stock or the Class B common stock. Holders of Class A common stock may
not vote on any change in the rights of the Class B common stock that would not
adversely affect their rights. A change relating to any one-for-one conversion
or exchange of the Class B common stock into or for Class A common stock shall
be deemed not to adversely affect the rights of the Class A common stock. Any
amendment to the certificate of incorporation to increase the authorized shares
of any class of capital stock of Conoco requires the approval only of a majority
of the votes entitled to be cast by the holders of Conoco common stock voting
together as a single class.

     Holders of shares of Conoco's common stock may not cumulate their votes in
the election of directors. In cumulative voting, a stockholder has a number of
votes equal to the number to which his stockholdings would entitle him,
multiplied by the number of directors being elected. A stockholder can then vote
all of those votes in favor of one or more directors. This improves a minority
stockholder's ability to influence the election of specific directors.

  DIVIDENDS

     All holders of Conoco common stock will share equally on a per share basis
in any dividend declared by the board of directors, subject to any rights of any
outstanding preferred stock to receive dividends. If the board declares a stock
dividend, stockholders of each class of common stock must receive shares of the
class of stock they already hold. Additionally, all common stockholders must
receive the same number of dividend shares on a per share basis.

     Conoco may not reclassify, subdivide or combine shares of either class of
common stock without simultaneously doing the same to shares of the other class.

                                       133
<PAGE>   134

  CONVERSION

     Each share of Conoco Class B common stock is currently convertible while
held by DuPont or any of its subsidiaries excluding Conoco, at the holder's
option, into one share of Class A common stock. Following the exchange offer,
shares of Class B common stock, including any shares retained by DuPont or its
affiliates because the exchange offer is undersubscribed, will no longer be
convertible into shares of Class A common stock.

     Prior to the exchange offer, any shares of Class B common stock transferred
to a person other than DuPont or any of its subsidiaries, excluding Conoco, will
automatically convert into shares of Class A common stock upon the transfer.
Shares of Class B common stock transferred to stockholders of DuPont in the
exchange offer will not be converted into shares of Class A common stock.
Following the exchange offer, shares of Class B common stock will remain Class B
common stock when transferred and will not convert into Class A common stock.

     If the exchange offer, or other transaction intended to qualify as a
tax-free distribution under Section 355 of the Internal Revenue Code of 1986,
does not occur, all shares of Class B common stock will automatically convert
into Class A common stock when the number of shares of Class B common stock
owned by DuPont falls below 50 percent of the total number of outstanding shares
of Conoco common stock. This provision prevents DuPont from owning less than 50
percent of Conoco's economic value while still retaining control of more than 80
percent of Conoco's voting power. Any time Class B common stock is converted
into Class A common stock, the holder of the Class B common stock will receive
an equal number of shares of Class A common stock.

  OTHER RIGHTS

     If Conoco merges or consolidates with another corporation and shares of
common stock are converted into or exchangeable for shares of stock, other
securities or property, all holders of common stock, regardless of class, will
be entitled to receive the same kind and amount of payment for their shares.
This requirement can be waived by a majority vote of each class of holders of
common stock.

     If Conoco is liquidated, dissolved or wound up, after full payment of any
required amounts to preferred stockholders, all holders of common stock,
regardless of class, will receive the same amount per share of any assets
distributed to common stock holders.

     No shares of either class of common stock have any right to be redeemed or
to purchase additional shares of common stock or other securities of Conoco.

     All the outstanding shares of Conoco common stock are validly issued, fully
paid and nonassessable.

PREFERRED STOCK

     At the direction of its board of directors, Conoco may issue preferred
stock from time to time in one or more series. Conoco's board of directors may,
without any action by holders of common stock, adopt resolutions to issue
preferred stock, which may include voting, dividend, redemption, conversion,
exchange and liquidation rights as well as other rights and features of any
series of preferred stock. The Conoco board of directors, without stockholder
approval, may issue preferred stock with voting and other rights that could
adversely affect the voting power of the holders of the common stock and that
could hinder takeovers. Conoco has no current plans to issue any shares of
preferred stock. The ability of the board of directors to issue preferred stock
without stockholder approval may delay, defer or prevent a change in control of
Conoco or the removal of existing management.

     For purposes of the rights plan described below, Conoco's board of
directors has designated 1.0 million shares of Series A junior participating
preferred stock, par value $.01 per share. For a description of the rights plan,
see "-- Anti-Takeover Effects of Certificate and By-law Provisions -- Rights
Plan."

                                       134
<PAGE>   135

ANTI-TAKEOVER EFFECTS OF CERTIFICATE AND BY-LAW PROVISIONS

  GENERAL

     The provisions of the certificate of incorporation and by-laws summarized
below may delay, deter, or prevent a tender offer or takeover attempt that a
stockholder might consider to be in its best interest, including offers or
attempts that might result in a premium being paid over the market price for the
common stock.

  BOARD OF DIRECTORS

     The certificate of incorporation and by-laws provide that the Conoco board
of directors is divided into three classes of directors, with the classes to be
as equal in number as possible. At the time of the initial public offering, the
classes were elected for one, two and three-year terms expiring at the annual
meeting of stockholders to be held in 1999, 2000 and 2001. Each director is to
hold office until his or her successor is duly elected and qualified. Beginning
with the 1999 annual meeting of stockholders, directors will be elected for
three-year terms.

     The certificate of incorporation and by-laws provide that Conoco's board of
directors will initially consist of nine members. The certificate of
incorporation and by-laws also provide that Conoco shall have not less than six
nor more than 15 directors. A majority of the entire board of directors
determines the exact number of directors. The certificate of incorporation also
provides that any vacancies on the board will be filled by the majority vote of
the remaining directors, even if less than a quorum, or by a sole remaining
director. However, if a vacancy on the board of directors is caused by the
stockholders removing a director, then only the stockholders can fill the
vacancy, and the directors have no power to do so.

     The certificate of incorporation and the by-laws provide that stockholders
can remove directors, with or without cause; provided that a two-thirds majority
vote of stockholders is required to remove directors during the period:

     - beginning on the first date that DuPont does not beneficially own shares
       representing 50 percent or more of the votes entitled to be cast by
       Conoco's voting stock; and

     - ending on the first date that DuPont does not beneficially own shares
       representing 30 percent or more of the votes entitled to be cast by
       Conoco's voting stock.

We refer to the date on which DuPont falls below the 50 percent voting threshold
as the first trigger date and the date on which DuPont falls below the 30
percent voting threshold as the second trigger date.

     Notwithstanding the previous paragraph, from and after the second trigger
date, directors of Conoco may only be removed for cause by a majority vote of
stockholders.

     "Cause" will exist if the board of directors has determined that removal of
a director is in the best interests of Conoco. If the board of directors has not
made that determination, then "cause" will exist only if:

     - the director has been convicted, or when a director is granted immunity
       to testify when another has been convicted, of a felony by a court and
       such conviction is no longer subject to direct appeal;

     - a majority of the directors or a court finds the director guilty of
       willful misconduct in performing his duties to Conoco in a matter of
       substantial importance to Conoco; or

     - a court finds the director mentally incompetent, and the mental
       incompetency directly affects his ability as a director of Conoco.

     Whenever holders of preferred stock may elect directors of Conoco because
Conoco has not paid dividends or because of other defaults under the terms of
the preferred stock, any of those directors can only be removed as provided
under the terms of the preferred stock.

     The by-laws provide that:

     - prior to the first trigger date, a majority of the directors on the audit
       and compliance committee and the compensation committee of the board of
       directors must be directors chosen by DuPont; and

                                       135
<PAGE>   136

     - on and after the first trigger date, but so long as DuPont owns shares
       representing 10 percent or more of the votes entitled to be cast by
       Conoco's voting stock, each committee of the board of directors must
       include at least one director chosen by DuPont.

  ADVANCE NOTICE PROCEDURES

     In general, a stockholder wishing to nominate directors or bring up other
matters for consideration at an annual meeting of stockholders must notify
Conoco in writing between 90 and 120 days prior to the anniversary of the
previous year's annual meeting of stockholders. The notice must contain required
information about the person to be nominated or the matters to be brought before
the meeting and about the stockholder submitting the proposal. The certificate
of incorporation and the by-laws provide that, as long as DuPont controls more
than 10 percent or more of the votes entitled to be cast by Conoco's voting
stock, DuPont does not have to comply with these notice procedures for director
nominations and stockholder proposals.

  SPECIAL MEETINGS

     The by-laws provide that currently only specified officers of Conoco or any
officer at the request of the board of directors or committee of the board may
call special meetings; stockholders may not call special meetings. The
certificate of incorporation and the by-laws provide that, after the second
trigger date, only the chairman of the board or the board of directors may call
special meetings of stockholders and stockholders may not call special meetings.
In addition, the certificate of incorporation and the by-laws provide that
currently stockholders may act by written consent, but that after the second
trigger date stockholders may only act at an annual or special meeting of
stockholders and not by written consent. No business other than that stated in
the notice of such meeting may be transacted at any special meeting.

  FAIR PRICE PROVISION

     The certificate of incorporation includes a "fair price" provision that
prohibits business combinations with related persons unless the following
conditions are met:

     The holders of each class of common stock receive the same payment as the
other class and either:

          - the payment is the same as the highest amount the related person
            paid in a tender offer completed within one year of the date of the
            definitive agreement for the business combination and the related
            person purchased at least 50% of each class of common stock in the
            tender offer; or

          - the payment is not less than what the related person paid or agreed
            to pay for any shares of Conoco's voting stock in a transaction
            completed within one year of the date of the definitive agreement
            for the business combination in which the related person became or
            during which the related person was a 15% holder of any class of
            Conoco's voting stock.

     Alternatively, the transaction will be permitted if it is approved by a
majority of the continuing directors or:

          - at least 66 2/3% of the votes entitled to be cast by the voting
            stock;

          - at least 50.01% of the votes entitled to be cast by the voting stock
            other than votes entitled to be cast by the related person;

          - from and after the first trigger date, a majority of the votes
            entitled to be cast by each class of common stock, excluding the
            common stock owned by the related person, with each class voting
            separately as a class.

     After the second trigger date, the required approval percentages set forth
in the first and second bullets in this paragraph increase to 80% and 66 2/3%.
The same percentage approvals are also required to amend the fair price
provisions. The fair price provision will not be applicable at such time as all
shares of Class B common stock have been converted into or exchanged for Class A
common stock.

     Under the fair price provision, a related person is any person, other than
DuPont and its affiliates and associates, that beneficially owns 15 percent or
more of any class of Conoco's voting stock or is an affiliate of
                                       136
<PAGE>   137

Conoco and at any time within the preceding two-year period was the beneficial
owner of 15 percent or more of any class of Conoco's voting stock.

     The types of business combinations covered by the fair price provision are:

     - any merger or consolidation of Conoco or any of its subsidiaries with a
       related person or an affiliate of a related person;

     - any sale, lease, exchange, transfer or other disposition of all or
       substantially all of the assets of Conoco to a related person or an
       affiliate of a related person;

     - reclassifications, recapitalizations and other corporate actions
       requiring a stockholder vote that would increase by more than one percent
       the proportionate share of any class of voting stock beneficially owned
       by the related person or an affiliate of a related person; and

     - a dissolution of Conoco caused or proposed by a related person or an
       affiliate of a related person.

     A continuing director is a director who is unaffiliated with the related
person and who was a director before the related person became a related person,
and any successor of a continuing director who is unaffiliated with a related
person and is recommended or nominated to succeed a continuing director by a
majority of the continuing directors.

  AMENDMENT

     A two-thirds majority vote of Conoco's voting stock is required to amend
provisions of Conoco's certificate of incorporation and by-laws relating to:

     - stockholder action by written consent;

     - the right to call special meetings of stockholders;

     - advance notice procedures with respect to stockholder meetings, including
       DuPont's exemption from those procedures;

     - board of directors classification and removal provisions; and

     - amendments changing the voting requirements for amendments;

provided that after the first trigger date, if there are any shares of Class B
common stock outstanding, approval by a majority of the votes entitled to be
cast by the holders of each class of common stock, voting separately by class,
is also required. After the second trigger date, the required vote to amend
these provisions increases to 80%.

     The board of directors may also amend the by-laws.

  EFFECT OF EXCHANGE OFFER ON THE FOREGOING PROVISIONS

     If the exchange offer is completed, the date of completion will be the
second trigger date. Accordingly, from that time:

     - directors may only be removed for cause, by majority vote of Conoco's
       voting stock;

     - stockholders will no longer be able to take action by written consent;

     - the stockholder approval percentages for business combinations with
       related parties described in the Fair Price Provision section above, will
       increase to 80 percent and 66 2/3 percent; and

     - amendments by stockholders of the provisions described under the section
       "Amendment" above will require 80 percent of the votes of Conoco's voting
       stock and a majority vote of each class.

                                       137
<PAGE>   138

  RIGHTS PLAN

     The board of directors has adopted a share purchase rights plan. Pursuant
to the rights plan, one preferred share purchase right accompanies each
outstanding share of Conoco common stock. We refer to these securities as
"rights". Each holder of a right is entitled to purchase from Conoco one
one-thousandth of a share of the junior participating preferred stock at a price
of $88, subject to adjustment. The description and terms of the rights are set
forth in a rights agreement between Conoco and First Chicago Trust Company of
New York. The following description is only a summary. For complete information
you should read the rights agreement, which has been incorporated by reference
as an exhibit to the registration statement of which this document is a part. To
find out where you can get a copy of the rights agreement, see "Where You Can
Find More Information" on page 154.

     The rights are attached to all certificates representing the currently
outstanding common stock and will attach to all common stock certificates Conoco
issues prior to the "rights distribution date." That date would occur, except in
some cases, on the earlier of

     (1) 10 business days following a public announcement that a person or group
of affiliated or associated persons (an "acquiring person") has acquired
beneficial ownership of

     - 15 percent or more of the outstanding Class A common stock;

     - 15 percent or more of the outstanding Class B common stock; or

     - any combination of Class A common stock and Class B common stock
       representing 15 percent or more of the votes of all shares entitled to
       vote in the election of directors; or

     (2) 10 business days, or such later date as the board of directors may
determine, following the start of a tender offer or exchange offer that would
result, if closed, in a person becoming an acquiring person,

     Until the rights distribution date or earlier redemption or expiration of
the rights, the rights will only be transferred with the common stock. Until the
rights distribution date or earlier redemption or expiration of the rights, all
shares of common stock which are issued will have associated rights. As soon as
practicable following the rights distribution date, Conoco will mail separate
certificates evidencing the rights to holders of common stock, as of the close
of business on that date. From and after the rights distribution date, only
separate rights certificates will represent the rights.

     The rights will not be exercisable until the rights distribution date. The
rights will expire on August 31, 2008, unless this date is extended or unless
Conoco redeems the rights earlier as described below.

     If any person or group becomes an acquiring person, the rights held by the
acquiring person will become void. At that time each other holder of a right,
will from that time have the right to receive upon exercise that number of
shares of the class of common stock attributable to the right, having a
then-current market price of two times the exercise price of the right. If
Conoco is acquired in a merger or other business combination transaction or 50
percent or more of its consolidated assets or earning power are sold after a
person or a group becomes an acquiring person, each holder of a right will from
that time on have the right to receive, upon exercising the right at the
then-current exercise price, a number of shares of common stock of the acquiring
company which has a then-current market price of two times the exercise price of
the right.

     At any time until the tenth business day following the public announcement
that a person or group has become an acquiring person, the board of directors
may redeem all of the rights at a price of $.01 per right. If the board timely
orders the redemption of the rights, the rights will terminate on the
effectiveness of that action.

     The board of directors may amend the terms of the rights without the
consent of the holders of the rights prior to the rights distribution date.
After the rights distribution date, the board may amend the rights agreement to
cure any ambiguity, to make changes that do not adversely affect the interests
of holders of rights, or to shorten or lengthen any time period under the rights
agreement; provided, however, that the board may not amend the rights to
lengthen a time period relating to when the rights may be redeemed if the rights
are not redeemable at that time. All amendments require the consent of DuPont if
DuPont holds 30 percent of voting power of the outstanding shares of common
stock. No amendments to the definition of acquiring person can be
                                       138
<PAGE>   139

made at any time without DuPont's consent, if DuPont holds 10 percent of voting
power of the outstanding shares of common stock.

     Until a right is exercised, the holder of the right will have no rights as
a stockholder of Conoco, including, without limitation, the right to vote or to
receive dividends.

     The board may adjust the number of outstanding rights and the number of
one-thousandths of a junior preferred share issuable upon exercise of each right
in the event of a stock split of or a common stock dividend on the common stock
or subdivisions, consolidations or combinations of the common stock occurring
prior to the rights distribution date.

     The board may adjust the purchase price payable, and the number of junior
participating preferred stock or other securities or property issuable, upon
exercise of the rights from time to time to prevent dilution in the event of
some transactions affecting the junior participating preferred stock.

     With some exceptions, the rights agreement does not require Conoco to
adjust the purchase price until cumulative adjustments amount to at least one
percent of the purchase price. No fractional junior participating preferred
stock will be issued, other than fractions which are integral multiples of one
one-thousandth of a junior preferred share, which may, at Conoco's option, be
evidenced by depositary receipts. Instead of issuing fractional shares, an
adjustment in cash will be made based on the market price of the junior
participating preferred stock on the last trading day prior to the date of
exercise.

     Junior participating preferred stock purchasable upon exercise of the
rights will not be redeemable. Each junior preferred share will be entitled to a
minimum preferential quarterly dividend payment of $0.01 per share but will be
entitled to an aggregate dividend of 1,000 times the dividend declared per share
of common stock. In the event of liquidation, the holders of the junior
participating preferred stock will be entitled to a minimum preferential
liquidation payment of $1,000 per share but will be entitled to an aggregate
payment of 1,000 times the payment made per share of common stock. Each junior
preferred share will have 1,000 votes voting together with the common stock.
Finally, in the event of any merger, consolidation or other transaction in which
shares of common stock are exchanged, each junior preferred share will be
entitled to receive 1,000 times the amount received per share of the common
stock. These rights are protected by customary anti-dilution provisions.

     The rights have anti-takeover effects. The rights will cause substantial
dilution to any person or group that attempts to acquire Conoco without the
approval of the board of directors. The rights should not interfere with any
merger or other business combination approved by the board of directors prior to
the time that a person or group has acquired beneficial ownership of 15 percent
or more of the Class A common stock, Class B common stock or voting power of the
outstanding shares of common stock since the rights may be redeemed by Conoco
until such time.

     DuPont is excluded from the definition of acquiring person and therefore
its ownership cannot trigger the distribution of rights under the rights plan.

CONTRACTUAL RELATIONS AMONG CONOCO, DUPONT AND RELATED ENTITIES

     The certificate of incorporation provides that, if specified disclosure
conditions are satisfied and if fair as to Conoco as of the time it is
authorized, approved or ratified by the board of directors, by a committee
thereof or by the stockholders, no contract, agreement, arrangement or
transaction between:

     - Conoco and DuPont,

     - Conoco and one or more of the directors or officers of Conoco, DuPont or
       a related entity, as defined below, or

     - Conoco and any related entity

will be void or voidable solely because DuPont, any related entity or any one or
more of the officers or directors of Conoco, DuPont or any related entity are
parties to the contract, agreement, arrangement or transaction, or solely
because any such directors or officers are present at or participate in the
meeting of the board of directors

                                       139
<PAGE>   140

or committee thereof that authorizes the contract, agreement, arrangement or
transaction or solely because his or their votes are counted for such purpose,
and DuPont, any related entity and such directors and officers:

     - will have fully satisfied and fulfilled their fiduciary duties to Conoco
       and its stockholders with respect to the contract, agreement, arrangement
       or transaction;

     - will not be liable to Conoco or its stockholders for any breach of
       fiduciary duty by reason of the entering into, performance or completion
       of any such contract, agreement, arrangement or transaction;

     - will be deemed to have acted in good faith and in a manner such persons
       reasonably believe to be in and not opposed to the best interests of
       Conoco; and

     - will be deemed not to have breached their duties of loyalty to Conoco and
       its stockholders and not to have derived an improper personal benefit
       therefrom.

A "related entity" is a corporation, partnership, association or other
organization in which one or more of Conoco's directors have a financial
interest.

DELAWARE BUSINESS COMBINATION STATUTE

     Conoco is subject to Section 203 of the Delaware General Corporation Law,
which regulates corporate acquisitions. Section 203 prevents an "interested
stockholder," which is defined generally as a person owning 15% or more of a
corporation's voting stock or any affiliate or associate of that person, from
engaging in a broad range of "business combinations," with the corporation for
three years after becoming an interested stockholder unless:

     - the board of directors of the corporation had previously approved either
       the business combination or the transaction which resulted in the
       stockholder becoming an interested stockholder;

     - upon completion of the transaction which resulted in the stockholder
       becoming an interested stockholder, that person owned at least 85 percent
       of the voting stock of the corporation outstanding at the time the
       transaction commenced, excluding shares owned by persons who are
       directors and also officers and shares owned in employee stock plans in
       which participants do not have the right to determine whether shares held
       subject to the plan will be tendered; or

     - following the transaction in which that person became an interested
       stockholder, the business combination is approved by the board of
       directors of the corporation and holders of at least 66 2/3 percent of
       the outstanding voting stock not owned by the interested stockholder.

     Under Section 203, the restrictions described above also do not apply to
specific business combinations proposed by an interested stockholder following
the announcement or notification of designated extraordinary transactions
involving the corporation and a person who had not been an interested
stockholder during the previous three years or who became an interested
stockholder with the approval of a majority of the corporation's directors, if
such extraordinary transaction is approved or not opposed by a majority of the
directors who were directors prior to any person becoming an interested
stockholder during the previous three years or were recommended for election or
elected to succeed such directors by a majority of such directors.

     DuPont and its affiliates are excluded from the definition of interested
stockholder under the terms of Section 203. Section 203 makes it more difficult
for a person who would be an interested stockholder to effect various business
combinations with a corporation for a three-year period.

LIMITATIONS ON DIRECTORS' LIABILITY

     The certificate of incorporation provides that no director of Conoco shall
be liable to Conoco or its stockholders for monetary damages for breach of
fiduciary duty as a director, except for liability

     -  for any breach of the director's duty of loyalty to Conoco or its
        stockholders;

     -  for acts or omissions not in good faith or which involve intentional
        misconduct or a knowing violation of law;
                                       140
<PAGE>   141

     -  in respect of unlawful dividend payments or stock redemptions or
        repurchases as provided in Section 174 of the Delaware General
        Corporation Law; or

     -  for any transaction from which the director derived an improper personal
        benefit.

     These provisions eliminate the rights of Conoco and its stockholders suing
through stockholders' derivative suits on behalf of Conoco to recover monetary
damages against a director for breach of fiduciary duty as a director, including
breaches resulting from grossly negligent behavior, except in the situations
described above. Conoco's by-laws provide for indemnification of directors and
officers to the maximum extent permitted by Delaware law. Conoco has also
entered into indemnification agreements with each of its directors providing for
indemnification of such directors to the fullest extent permitted by applicable
law.

LISTING

     The Conoco Class B common stock has been approved for listing on the NYSE
under the trading symbol "COC.B." The Class A common stock is listed on the NYSE
under the symbol "COC." When the exchange offer is completed, the symbol for the
Conoco Class A Common Stock will be changed to "COC.A."

TRANSFER AGENT AND REGISTRAR

     The transfer agent and registrar for Conoco common stock is First Chicago
Trust Company of New York.

                                       141
<PAGE>   142

             COMPARISON OF RIGHTS OF HOLDERS OF DUPONT COMMON STOCK
                            AND CONOCO COMMON STOCK

     Upon completion of the exchange offer, DuPont stockholders who exchange
their shares of DuPont common stock for Conoco Class B common stock will become
stockholders of Conoco. These holders' rights will continue to be governed by
Delaware law and will be governed by the Conoco certificate of incorporation and
by-laws. Because each of DuPont and Conoco is organized under the laws of
Delaware, differences in the rights of a Conoco stockholder from those of a
DuPont stockholder arise principally from provisions of the certificates of
incorporation and by-laws of each of DuPont and Conoco.

     The following is a summary of the material differences between the
companies' certificates and by-laws. The summary is not a complete statement of
the rights of stockholders of the two companies or a complete description of the
specific provisions referred to below. The summary is qualified in its entirety
by reference to the governing corporate instruments of DuPont and Conoco which
you should read. Copies of the governing corporate instruments of DuPont and
Conoco have been filed with the SEC. To find out where you can get copies of
these documents, see "Where You Can Find More Information" on page 154.

                         CONOCO                  DUPONT
- ------------------------------------------------------
- ------------------------------------------------------

              AUTHORIZED CAPITAL STRUCTURE AND LIQUIDATION RIGHTS
                             (AS OF JUNE 30, 1999)

<TABLE>
<CAPTION>
                                                        LIQUIDATION
    CLASS OF SECURITY      AUTHORIZED    OUTSTANDING     PREFERENCE
    -----------------      ----------    -----------    -----------
<S>                        <C>          <C>            <C>
Class A common              3 billion   190.6 million       None
Class B common             1.6 billion  436.5 million       None
Preferred, $.01 par value  250 million      None       Not applicable
</TABLE>

<TABLE>
<CAPTION>
                                                          LIQUIDATION
   CLASS OF SECURITY     AUTHORIZED    OUTSTANDING         PREFERENCE
   -----------------     ----------    -----------        -----------
<S>                      <C>          <C>            <C>
Common stock,            1.8 billion     1,129.5              None
$0.30 par value                          million
Preferred stock          23 million
 $4.50 DuPont Preferred                1.7 million   $100 per share if
                                                     involuntary
                                                     $115 per share if
                                                     voluntary, plus
                                                     accrued dividends in
                                                     either case
 $3.50 DuPont Preferred                0.7 million   $100 per share if
                                                     involuntary
                                                     $107 per share if
                                                     voluntary, plus
                                                     accrued dividends in
                                                     either case
</TABLE>

                                DIVIDEND POLICY

<TABLE>
<S>                                               <C>
Conoco has no legal or contractual obligation     DuPont has no legal or contractual obligation
to pay dividends. Conoco currently intends to     to pay dividends. DuPont currently intends to
pay a quarterly dividend of $0.19 per share on    pay a quarterly dividend of $0.35 per share on
its common stock, subject to financial results    its common stock, subject to financial results
and declaration by its board of directors.        and declaration by its board of directors.
There can be no assurance that these dividends    There can be no assurance that these dividends
or any future dividends will be declared and      or any future dividends will be declared and
paid.                                             paid.
</TABLE>

                                 VOTING RIGHTS

<TABLE>
<S>                                               <C>
Class A common stock -- 1 vote per share          Common stock -- 1 vote per share
Class B common stock -- 5 votes per share
  - Plurality vote for directors                  Plurality vote, unless required by law
  - Majority vote for other matters.
  - Both classes vote together unless required
    by law or the certificate of
    incorporation.
For more details, see, "Description of Conoco
Capital Stock -- Common Stock -- Voting
Rights."
</TABLE>

                                       142
<PAGE>   143

                         CONOCO                  DUPONT
- ------------------------------------------------------
- ------------------------------------------------------

                            ANTI-TAKEOVER PROVISIONS
                     Shareholder Action by Written Consent

<TABLE>
<S>                                               <C>
Shareholder action by written consent not         Stockholder action by written consent
permitted after the second trigger date.          permitted.
</TABLE>

                               Board of Directors

<TABLE>
<S>                                               <C>
Number of directors: Between six and 15           Number of Directors: More than 10
Expiration of director terms: one-third           Expiration of director terms: all expire each
expires each year                                 year
Votes required for removal:                       Vote required for removal: 50%
     - 50% (currently)
     - 66 2/3% (between first and second
trigger dates)
     - 50% and only for cause (after second
       trigger date)
</TABLE>

                           Advance Notice Procedures

<TABLE>
<S>                                               <C>
In general, a stockholder wishing to nominate     No provisions regarding advance notice of
a director or raise another proposal must         director nominations or stockholder proposals.
notify Conoco in writing between 90 and 120
days prior to the anniversary of the previous
year's annual meeting of stockholders. This
notice must contain required information
concerning the person to be nominated or the
matters to be brought before the meeting and
concerning the stockholder submitting the
proposal.
</TABLE>

                                Special Meetings

<TABLE>
<S>                                               <C>
Special meetings of stockholders generally may    Special meetings of the stockholders of DuPont
be called only by specified officers of Conoco    shall be called by the board of directors or
or by any officer at the request of the board     by the secretary of DuPont at the request of
of directors or one of the board's committees.    at least 25 percent of the outstanding stock
Special meetings cannot be called by              of DuPont entitled to vote.
stockholders of Conoco and the certificate of
incorporation and the by-laws expressly deny
stockholders the right to call special
meetings after the exchange offer.
</TABLE>

                                       143
<PAGE>   144
                         CONOCO                  DUPONT
- ------------------------------------------------------
- ------------------------------------------------------

                    ANTI-TAKEOVER PROVISIONS -- (CONTINUED)

                              Fair Price Provision

<TABLE>
<S>                                               <C>
Conoco's certificate of incorporation includes    No fair price provision.
a fair price provision that prohibits business
combinations with a person owning more than 15
percent of Conoco's common stock, unless the
transaction meets specified fairness criteria
or is approved by specified super-majority
voting criteria. For more details, see
"Description of Conoco Capital Stock -- Anti-
Takeover Effects of Certificate and By-Law
Provisions -- Fair Price Provision."
</TABLE>

                                   Amendment

<TABLE>
<S>                                               <C>
Amendments to provisions of Conoco's              No requirement for supermajority votes, except
certificate of incorporation and amendments to    as provided by law.
its by-laws by stockholders relating to the
following matters require two-thirds majority
of all common stock votes, provided that after
the first trigger date, if there are any
shares of Class B common stock outstanding,
approval by a majority of the votes entitled
to be cast by the holders of each class of
common stock, voting separately by class, is
also required:
- -  stockholder action by written consent;
- -  the right to call special meetings of
stockholders;
- -  advance notice procedures with respect to
   stockholder meetings, including DuPont's
   exemption from those procedures;
- -  board classification and removal
provisions; and
- -  amendments changing the voting requirements
   for amendments.
After the second trigger date, the required
vote to amend those provisions increases to
80%.
</TABLE>

                                  Rights Plan

<TABLE>
<S>                                               <C>
Conoco's board of directors has adopted a         DuPont has not adopted a rights plan.
rights plan providing for the issuance of
Rights, which would cause substantial dilution
to a person or group that attempts to acquire
Conoco on terms not approved in advance by
Conoco's board of directors. For more details,
see "Description of Conoco Capital Stock --
Anti-Takeover Effects of Certificate and
By-Law Provisions -- Rights Plan."
</TABLE>

                                       144
<PAGE>   145
                         CONOCO                  DUPONT
- ------------------------------------------------------
- ------------------------------------------------------

                                    LISTING

<TABLE>
<S>                                                  <C>
The Conoco Class B common stock has been             DuPont common stock is currently listed and
approved for listing on the NYSE under the           traded on the NYSE under the symbol "DD" and on
symbol "COC.B."                                      the Boston, Chicago, Cincinnati, Pacific,
The Class A common stock is listed on the NYSE       Philadelphia, London, Brussels, Paris,
under the symbol "COC." At the closing of the        Dusseldorf, Frankfurt and Amsterdam exchanges,
exchange offer, the symbol for the Class A           as well as the Swiss Electronic Exchange.
common stock will be changed to "COC.A."
</TABLE>

                                       145
<PAGE>   146

                     ARRANGEMENTS BETWEEN CONOCO AND DUPONT

     In 1998 and prior years, there were significant transactions between Conoco
and DuPont involving services such as natural gas and gas liquids supply, cash
management, other financial services, purchasing, legal, computer and corporate
activities. See note 3 to the notes to consolidated financial statements of
Conoco.

     To govern Conoco's and DuPont's on-going relationship and to facilitate
separating the two companies, Conoco and DuPont, or their respective
subsidiaries, entered into various agreements, including those described below.
These agreements were negotiated in the context of a parent-subsidiary
relationship and therefore are not the result of arm's-length negotiations
between independent parties. Therefore, these agreements may not contain terms
as favorable to Conoco as Conoco could have obtained from unaffiliated third
parties.

     Conoco filed the agreements summarized below as exhibits to the
registration statement filed with its initial public offering. Reading the
following summaries is not a substitute for reading the documents in their
entirety. To find out where you can get copies of these documents, see "Where
You Can Find More Information" on page 154.

RESTRUCTURING, TRANSFER AND SEPARATION AGREEMENT

     In connection with the Conoco initial public offering, DuPont and Conoco
entered into a Restructuring, Transfer and Separation Agreement, which provided
for the principal transactions required to separate the two companies and the
Conoco initial public offering. These transactions included transferring oil and
gas assets to Conoco, dividing liabilities between DuPont and Conoco, and
entering into other agreements governing the on-going relationship between
DuPont and Conoco.

     To effect the separation, DuPont and its subsidiaries transferred assets
related to the oil and gas business to Conoco or one of its subsidiaries, and
Conoco transferred and its subsidiaries transferred assets unrelated to the oil
and gas business to DuPont or one of its subsidiaries. As a result, Conoco and
DuPont assumed the liabilities of the businesses they received in the transfer.
DuPont and Conoco and their subsidiaries made all of the transfers on an "as is,
where is" basis, and without any representations or warranties. As a result,
Conoco and DuPont, each bear the economic and legal risks that these transfers
did not convey good and marketable title to such assets. The parties also agreed
that following the Conoco initial public offering, DuPont and its subsidiaries,
on the one hand, and Conoco and its subsidiaries, on the other hand, would
transfer to the other, in some instances without additional consideration, all
assets which, subsequent to October 27, 1998, the effective date of the
separation of Conoco from DuPont, the parties determined more properly belong in
the other's business.

     The separation agreement generally provided that DuPont and Conoco assumed
all of the liabilities, actual or contingent, associated with the following:

  Conoco

     - Conoco's historical and current operations, including the oil and gas
       business;

     - Conoco's former chemical business, except those sold to Cain Chemical;

     - Conoco's interest in the Pocahantas Gas partnership; and

     - all other assets transferred to Conoco in connection with the separation
       of Conoco from DuPont.

  DuPont

     - all other business of DuPont and its subsidiaries;

     - Conoco's former coal business; and

     - Conoco's former chemical business sold to Cain Chemical.

     Each party also agreed to assume liabilities associated with activities and
operations of the other party to the extent such activities and operations were
performed for or on behalf of its current or historical business. The parties
also agreed to bear responsibility in proportion to the relative amounts of
waste deposited by each

                                       146
<PAGE>   147

party on any contaminated off-site location. The separation agreement contained
indemnification and contribution provisions in connection with:

     - the assumption or retention of liabilities by Conoco and DuPont;

     - the conduct of the parties' respective businesses after the separation of
       Conoco from DuPont;

     - misstatements or omissions in the Conoco initial public offering
       registration statement relating to information provided by the other
       party; and

     - the use of the other's trade marks, tradenames, logos or other
       identifiers.

     The separation agreement contains provisions regarding Conoco's corporate
governance, most of which depend on the level of DuPont's ownership interest in
Conoco. Upon completion of the transaction, Conoco will no longer be subject to
these provisions. The separation agreement provides for the following corporate
governance requirements in the event DuPont owns the following percentages of
the voting power of all of Conoco's capital stock:

Percentage                 Provision

At least 10%               Each committee of the Conoco board of directors must
                           include a director chosen by DuPont.

At least 20%               Conoco must deliver to DuPont specified financial
                            information.

At least 30%               Conoco cannot recommend or take any action without
                           DuPont's consent that would limit DuPont's rights or
                           deny any benefit to DuPont or its subsidiaries in a
                           manner not applicable to Conoco's other stockholders.

At least 50%               - DuPont can nominate a majority of Conoco's board of
                             directors.

                           - Directors chosen by DuPont must constitute a
                             majority of the Conoco board's Audit and
                             Compensation Committee.

                           - Conoco may not change specified accounting
                             practices without DuPont's consent.

Between 10% and 50%        DuPont may designate for nomination a number of
                           Conoco directors proportionate to its voting power.

     The separation agreement provides that Conoco will, subject to specified
exceptions, use the proceeds from incurring debt or issuing stock to repay debt
owed to DuPont, including the $7.5 billion note described below under the
caption "-- Intercompany Notes." Net proceeds from the Conoco initial public
offering of $4.2 billion were used to repay a portion of debt owed to DuPont in
October 1998. The separation agreement provides in general that DuPont is
responsible for all nonrecurring costs, including fees and taxes, directly
relating to the Conoco initial public offering, the separation of Conoco from
DuPont and subsequent transactions resulting in a reduction of DuPont's
ownership of outstanding voting stock, including the transaction, and will
reimburse Conoco for all such costs that it incurs. Conoco and DuPont agreed in
the separation agreement that Conoco will take all actions reasonably requested
by DuPont to facilitate the exchange offer and that DuPont will reimburse Conoco
for its expenses associated with the exchange offer. In addition, Conoco and
DuPont have agreed to indemnify and provide contribution to each other and take
other relevant action, in a manner similar to that set forth in the registration
rights agreement.

     The separation agreement requires that Conoco use its best efforts to
terminate, or have Conoco or a subsidiary of Conoco substituted for DuPont
under, all existing guarantees by DuPont of obligations relating to Conoco's
business. Beginning on the earlier of October 27, 2000 or the first trigger
date, which will occur upon completion of the exchange offer, Conoco will pay
DuPont a fee of 0.20 percent per year on the total amount of any outstanding
guarantees and letters of credit. For the purpose of the fee calculation, Conoco
and DuPont agreed that the amount of such guarantees was $1,610 million as of
the effective date of the separation of Conoco from DuPont. The amount of
guarantees for purposes of the fee calculation may be increased or

                                       147
<PAGE>   148

decreased in good faith judgment of the chief financial officer or treasurer of
DuPont to reflect changes in the financial exposure of DuPont but may only be
adjusted at such time as the amount of any such adjustment exceeds $50 million.

INTERCOMPANY NOTES

     On July 20, 1998, Conoco issued a promissory note to DuPont in the
aggregate principal amount of $7.5 billion. The net proceeds from Conoco's
initial public offering were approximately $4,228 million. Conoco used the net
proceeds of the initial public offering to repay a portion of the amounts
outstanding under the note and other intercompany notes with DuPont. At March
31, 1999, the aggregate principal amount owed by Conoco to DuPont pursuant to
these notes was $4,596 million. On October 27, 1998, Conoco and DuPont entered
into a revolving credit agreement under which DuPont provided Conoco with a
revolving credit facility in the principal amount of up to $500 million. The
outstanding balance under this credit facility as of March 31, 1999 was $300
million.

     On April 20, 1999, Conoco repaid $3,970 million of principal and accrued
interest on the notes with the proceeds from its $4 billion senior debt
offering, and in May 1999, repaid the remaining principal and accrued interest
on the notes and the revolving credit facility with the proceeds from its
commercial paper program.

     For a description of the senior debt offering and commercial paper program
see "Management's Discussion and Analysis of Financial Condition and Results of
Operations of Conoco -- Liquidity and Capital Resources -- Financing
Activities."

TAX SHARING AGREEMENT

     Conoco and a number of its subsidiaries have historically been included in
DuPont's consolidated group (the "consolidated group") for United States federal
income tax purposes as well as in consolidated, combined or unitary groups which
include DuPont and/or a number of its subsidiaries (a "combined group") for
state, local and foreign income tax purposes. Conoco and DuPont entered into a
tax sharing agreement in connection with the Conoco initial public offering.
Under the tax sharing agreement, Conoco and DuPont generally will make payments
between them such that, with respect to tax returns for any taxable period in
which Conoco or any of its subsidiaries is included in the consolidated group or
any combined group, the amount of taxes to be paid by Conoco will be determined,
subject to adjustments, as if Conoco and each of its subsidiaries included in
the consolidated group or combined group filed their own consolidated, combined
or unitary tax return. Conoco and DuPont will jointly prepare pro forma tax
returns with respect to any tax return filed with respect to the consolidated
group or any combined group in order to determine the amount of tax sharing
payments under the tax sharing agreement. Conoco generally will be responsible
for any taxes related to tax returns that include only Conoco and its
subsidiaries.

     The tax sharing agreement allocates responsibility between DuPont and
Conoco for preparing and filing tax returns and controlling and contesting
audits and tax proceedings. DuPont will be primarily responsible for preparing
and filing any tax return with respect to the consolidated group or any combined
group. Conoco will be responsible for preparing the portion of any such tax
return that relates exclusively to Conoco or any of its subsidiaries; however,
Conoco will be required to submit any such portions to DuPont for DuPont's
review and approval, which may not be unreasonably withheld. Conoco generally
will be responsible for preparing and filing any tax returns that include only
Conoco and its subsidiaries. DuPont will be primarily responsible for
controlling and contesting any audit or other tax proceeding relating to the
consolidated group or any combined group and, Conoco will have the right to
control and contest any audit or tax proceeding that relates directly to any tax
item included on the portion of any tax return which Conoco is responsible for
preparing. Conoco may not, however, enter into any settlement or agreement or
any decision in connection with any audit or tax proceeding without DuPont's
approval, which may not be unreasonably withheld. Disputes arising between the
parties relating to matters covered by the tax sharing agreement are subject to
resolution through specific dispute resolution provisions.

     Several matters under the tax sharing agreement are currently in dispute
between Conoco and DuPont. DuPont's obligations to Conoco arising out of the
most significant of these matters could range from zero to up
                                       148
<PAGE>   149

to approximately $160 million, depending on the outcome of the dispute. The
effect of the dispute is not currently reflected in DuPont's or Conoco's
financial statements and, regardless of the outcome of this dispute, neither
DuPont nor Conoco believes the result will be material to its financial
position.

     Conoco was included in the consolidated group for periods in which DuPont
beneficially owned at least 80 percent of the total voting power and value of
the outstanding stock of Conoco. Conoco ceased to be included in the
consolidated group following the Conoco initial public offering. Each member of
a consolidated group for United States federal income tax purposes is jointly
and severally liable for the United States federal income tax liability of each
other member of the consolidated group. Accordingly, although the tax sharing
agreement allocates tax liabilities between Conoco and DuPont, for any period in
which Conoco was included in the consolidated group, Conoco could be liable in
the event that any United States federal income tax liability was incurred, but
not discharged, by any other member of the consolidated group.

     Each of Conoco and DuPont have agreed not to take, or fail to take, any
action inconsistent with any information, covenant or representation provided to
the IRS in connection with obtaining the ruling and further agreed to be liable
for any taxes arising from a breach of such agreement. In addition, Conoco has
agreed that, during the three year period following the exchange offer and any
subsequent spin-off, it will not engage in transactions that could adversely
affect the tax treatment of the exchange offer and any subsequent spin-off,
unless a supplemental ruling from the IRS or a tax opinion acceptable to DuPont
of nationally recognized tax counsel is obtained to the effect that the proposed
transaction would not adversely affect the tax treatment of the exchange offer
and any subsequent spin-off. Moreover, Conoco will be liable to DuPont for any
corporate level taxes incurred by DuPont as a result of the exchange offer and
any subsequent spin-off to the extent such taxes are attributable to specified
actions or failures to act by Conoco, or to specified transactions involving
Conoco following the exchange offer and any subsequent spin-off, including the
acquisition of Conoco stock by any person or persons.

EMPLOYEE MATTERS AGREEMENT

     In connection with the Conoco initial public offering, DuPont and Conoco
entered into an employee matters agreement. This agreement covers claims arising
out of or relating to any employee benefit or compensation plan, agreement,
arrangement or program, as well as collective bargaining agreements, accrued
wages and workers' compensation, holiday, vacation and disability benefits.
Under this agreement, subject to specified exceptions, Conoco assumed sole
responsibility for all liabilities arising relating to current and former
employees of businesses transferred to Conoco under the separation agreement. We
refer to these employees in this section as "transferred business employees."
DuPont agreed to assume sole responsibility for liabilities relating to all of
its other current and former employees. Individuals employed by both a business
transferred to Conoco as well as another business retained by DuPont are
considered transferred business employees if their primary employment is with a
transferred business.

     Transferred business employees who participated in the DuPont pension plan
continue to participate in the DuPont pension plan. Within 90 days of, and
effective on, the date DuPont owns less than 80 percent of the voting power and
80 percent of the economic value of all outstanding shares of Conoco common
stock, Conoco will establish its own retirement plan. This will occur upon
completion of the transaction. Within six months of Conoco's establishing its
own plan, so long as specified conditions are met, the trustee of the DuPont
Pension Plan will transfer to the trustee of Conoco's retirement plan an amount
equal to approximately 90 percent of $820 million, plus or minus any investment
gains and losses and benefits payments made between the date of the separation
and the date of the transfer; within 90 days of this date, the trustee of the
DuPont Pension Plan will transfer the remaining 10 percent, plus interest.

     Most Conoco employees had the option, subject to specific country tax and
legal requirements, effective as of the closing of the Conoco initial public
offering, to cancel all or part of their DuPont options or DuPont stock
appreciation rights and receive Conoco stock options and Conoco stock
appreciation rights. Retired employees of Conoco did not participate in this
program. All DuPont options and DuPont stock appreciation rights held by retired
employees, together with all such options and stock appreciation rights held by
employees who did not elect to participate in this program, will continue to be
obligations solely of DuPont.

                                       149
<PAGE>   150

     Conoco assumed or retained pension plans and associated assets and
liabilities maintained or sponsored by DuPont for the benefit of foreign
employees in which only transferred business employees participate.

     In consideration of the liabilities assumed by DuPont under the employee
transfer guidelines as a result of transfers of employees between Conoco and
DuPont, Conoco incurred an approximate $10 million liability to DuPont. This
amount was reduced by a $3 million obligation of DuPont to Conoco resulting from
an agreed calculation to allocate liabilities associated with the option program
based on actual levels of participation. As a result, at the effective date,
Conoco owed DuPont approximately $7 million, evidenced by a promissory note.
Conoco repaid this note in full in May 1999 with proceeds from its commercial
paper program. Transfers of 100 or more employees between Conoco and DuPont
occurring prior to the transaction will result in a supplemental cash payment to
Conoco or DuPont as applicable.

TRANSITIONAL SERVICES AGREEMENTS

     In connection with the Conoco initial public offering, DuPont and Conoco
entered into several transitional services agreements where they agreed to
continue providing various services to each other. These services include
material procurement, financial and administrative services, consulting and
research services, and employee benefits administration. The parties agreed to
provide each service covered for a specified time period, ranging from three to
24 months. However, either party may terminate any or all services that they
receive under the transitional services agreements at any time upon 45 days
prior written notice. The parties receiving services are obligated to take all
steps necessary to enable them to perform the relevant services on a stand alone
basis. The parties are obligated to pay fees established in the transitional
services agreements based upon the type and amount of services rendered.

INFORMATION SYSTEMS AND TELECOMMUNICATION CARRIER TRANSITIONAL SERVICES
AGREEMENTS AND FACILITIES LEASE AGREEMENTS

     DuPont and Conoco entered into a series of United States and foreign
service agreements under which DuPont and Conoco provide information system
services to each other, and DuPont provides telecommunication carrier services
to Conoco. DuPont and Conoco also entered into a facilities lease agreement
whereby DuPont leases data center and office facilities at Conoco's Houston,
Texas and Ponca City, Oklahoma sites. The terms of these agreements range from
two to nine years. Under the agreements, DuPont and third party contractors
provide services to Conoco at DuPont's cost, or, in the case of third party
services, at the prices and in accordance with the terms and conditions provided
for in the third party agreements, and subject to an administrative fee.

NATURAL GAS SUPPLY AGREEMENT

     DuPont consumes approximately 350 million cubic feet per day of natural gas
at its various facilities in the United States. Prior to the Conoco initial
public offering, DuPont and Conoco entered into an agreement providing for
Conoco to supply natural gas to DuPont for at least one year at cost plus a
management fee reflecting market costs for similar supply services.

FEEDSTOCK FOR DUPONT'S SABINE RIVER WORKS PLANT

     Conoco owns and operates the Mont Belvieu Storage Facility, which currently
supplies the Ethylene Business Unit at DuPont's Sabine River Works Plant with
its full ethane feedstock requirements. Conoco also provides storage and
throughput services for both ethane and ethylene and operates DuPont-owned
pipelines for these products. Conoco has agreed to provide ethane and ethylene
storage and throughput services for the next 30 years, and to operate
DuPont-owned pipelines for the next 20 years. Conoco will supply DuPont with its
partial requirements of ethane for at least two years, generally at market
prices.

MOTOR CARRIER AGREEMENT

     Conoco and Sentinel Transportation Company, a wholly owned subsidiary of
DuPont, have entered into a motor carrier agreement governing transportation of
commodities within the United States and Canada. The
                                       150
<PAGE>   151

motor carrier agreement expires in 1999. However, either party may terminate
this arrangement at any time upon 90 days' prior written notice.

REGISTRATION RIGHTS AGREEMENT

     In connection with the Conoco initial public offering, DuPont and Conoco
entered into a registration rights agreement, under which Conoco agreed to
register on a shelf registration statement the sale of Conoco common stock owned
by DuPont. Conoco agreed to keep the shelf registration effective for a period
of two years following the date that the shelf registration becomes effective.
In addition, Conoco provided DuPont with three demand registration rights and
specified "piggy-back" registration rights. Such sales may be made under one or
more underwritten offerings or otherwise. The parties agreed to indemnify each
other and any underwriters on standard terms, including for liability under
federal securities laws. Upon completion of the transaction, DuPont will no
longer own any securities of Conoco which would be subject to this agreement.

                                       151
<PAGE>   152

                 UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

     The following is a summary of the material United States federal income tax
consequences relating to the exchange offer and any subsequent spin-off. The
summary is based on the Code, the Treasury regulations promulgated thereunder,
and interpretations of the Code and Treasury regulations by the courts and the
IRS, all as they exist as of the date of this document. This summary does not
discuss all tax considerations that may be relevant to DuPont stockholders in
light of their particular circumstances, nor does it address the consequences to
DuPont stockholders subject to special treatment under the United States federal
income tax laws, such as tax-exempt entities, non-resident alien individuals,
foreign entities, foreign trusts and estates and beneficiaries thereof, persons
who acquire such DuPont stock pursuant to the exercise of employee stock options
or otherwise as compensation, insurance companies, and dealers in securities. In
addition, this summary does not address the United States federal income tax
consequences to DuPont stockholders who do not hold their DuPont common stock as
a capital asset. This summary does not address any state, local or foreign tax
consequences. DuPont stockholders are urged to consult their tax advisors as to
the particular tax consequences to them of the exchange offer and any subsequent
spin-off.

     Tax Opinion, IRS Ruling and Federal Income Tax Consequences.  DuPont has
received a tax opinion from Skadden, Arps, Slate, Meagher & Flom LLP and a
ruling from the IRS to the effect that, for United States federal income tax
purposes, the exchange offer and any subsequent spin-off will qualify under
Section 355 of the Code as a distribution that is generally tax-free to DuPont
stockholders and to DuPont. DuPont will not be able to rely on the tax opinion
or the ruling if any factual representations made to counsel or the IRS are
incorrect or untrue in any material respect or any undertakings made to counsel
or the IRS are not complied with. Neither DuPont nor Conoco is aware of any
facts or circumstances that would cause any such representations to be incorrect
or untrue in any material respect. An opinion of counsel is not binding on the
IRS or the courts.

     Nevertheless, if DuPont completes the exchange offer and any subsequent
spin-off and, notwithstanding the ruling, the exchange offer and any subsequent
spin-off is held to be taxable for United States federal income tax purposes,
both DuPont and its stockholders that receive Conoco Class B common stock could
be subject to a material amount of taxes as a result of the exchange offer and
any subsequent spin-off. Conoco will be liable to DuPont for any such corporate
level taxes incurred by DuPont to the extent such taxes are attributable to
specified actions or failures to act by Conoco, or to specified transactions
involving Conoco following the exchange offer and any subsequent spin-off. For a
description of DuPont's and Conoco's obligations in connection with obtaining
the ruling and potential tax liabilities if the exchange offer and any
subsequent spin-off is held to be taxable, see "Arrangements Between Conoco and
DuPont -- Tax Sharing Agreement", at page 148.

     The tax opinion and the ruling provide that for United States federal
income tax purposes:

     - no gain or loss will be recognized by, and no amount will be included in
       the income of, the DuPont stockholders upon their receipt of shares of
       Conoco Class B common stock in the exchange offer and any subsequent
       spin-off;

     - for those DuPont stockholders that surrender all of their DuPont common
       stock in the exchange offer, the aggregate tax basis of the shares of
       Conoco Class B common stock held by the DuPont stockholders after the
       exchange offer, including any fractional share interests, will be the
       same as the aggregate tax basis of the shares of DuPont common stock
       exchanged in the exchange offer;

     - for those DuPont stockholders that do not surrender all of their DuPont
       common stock in the exchange offer, each such stockholder's aggregate tax
       basis in the DuPont common stock held before the completion of the
       exchange offer will be allocated between the DuPont common stock and
       Conoco Class B common stock, including any fractional share interests,
       held by such stockholder after the exchange offer and any subsequent
       spin-off in proportion to their relative fair market values; and

     - the holding period of the shares of Conoco Class B common stock received
       by the DuPont stockholders in the exchange offer and any subsequent
       spin-off, including any fractional share interests, will include

                                       152
<PAGE>   153

       the holding period of the shares of DuPont common stock with respect to
       which the shares of Conoco Class B common stock were received.

     The ruling does not specifically address tax basis issues with respect to
holders of DuPont common stock who have blocks of DuPont common stock with
different per share tax bases. Such holders are urged to consult their tax
advisors regarding the possible tax basis consequences to them of the exchange
offer and any subsequent spin-off.

     For DuPont stockholders that do not surrender all of their DuPont common
stock in the exchange offer, the aggregate tax basis in the DuPont common stock
and Conoco Class B common stock held after the exchange offer will equal such
stockholder's aggregate tax basis in its DuPont common stock held before the
exchange offer. The portion of the stockholder's aggregate tax basis allocated
to Conoco Class B common stock received in the exchange offer will equal the
aggregate tax basis in the DuPont common stock held before the exchange offer
multiplied by a fraction equal to:

     - the fair market value of Conoco Class B common stock received in the
       exchange offer, divided by

     - the fair market value of Conoco Class B common stock received in the
       exchange offer plus the fair market value of the DuPont common stock held
       immediately after the exchange offer.

For DuPont stockholders that receive additional Conoco Class B common stock in
any subsequent spin-off, the calculation described above must be repeated using
the tax basis in the DuPont common stock, as determined following the exchange
offer, as the starting point in the calculation.

     United States Treasury regulations require each DuPont stockholder that
receives shares of Conoco Class B common stock in the exchange offer and any
subsequent spin-off to attach to the holder's United States federal income tax
return for the year in which such stock is received a detailed statement setting
forth such data as may be appropriate in order to show the applicability of
Section 355 of the Code to the exchange offer and any subsequent spin-off.
Within a reasonable time after the exchange offer and any subsequent spin-off,
DuPont will provide DuPont stockholders who participate in the exchange offer
and DuPont stockholders who receive Conoco Class B common stock in any
subsequent spin-off with the information necessary to comply with such
requirement, and will provide information regarding the allocation of tax basis
described above.

     DuPont stockholders are urged to consult their tax advisors as to the
particular tax consequences to them of the exchange offer and any subsequent
spin-off, including the application of state, local and foreign tax laws and any
changes in federal tax laws that occur after the date of this document.

                                 LEGAL MATTERS

     Rick A. Harrington, Senior Vice President, Legal and General Counsel of
Conoco, will pass upon the validity of Conoco Class B common stock being offered
hereby. Certain legal matters with respect to the transaction will be passed
upon for DuPont by Skadden, Arps, Slate, Meagher & Flom LLP, New York, New York
and for Conoco by Baker & Botts, L.L.P., Houston, Texas. Cravath, Swaine &
Moore, New York, New York will represent the dealer manager. Skadden, Arps,
Slate, Meagher & Flom LLP has in the past represented Conoco, DuPont and the
dealer manager and continues to represent DuPont and the dealer manager in
connection with various matters. Cravath, Swaine & Moore has in the past and
continues to represent DuPont and Conoco in various matters not related to the
transaction.

                                    EXPERTS

     The consolidated financial statements of Conoco as of December 31, 1998 and
1997, and for each of the three years in the period ended December 31, 1998
included in this document, and the consolidated financial statements of DuPont
as of December 31, 1998 and 1997 and for each of the three years in the period
ended December 31, 1998 incorporated by reference in DuPont's Annual Report on
Form 10-K have been so included in reliance on the reports of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.

                                       153
<PAGE>   154

                      WHERE YOU CAN FIND MORE INFORMATION

     DuPont and Conoco both file annual, quarterly and special reports, proxy
statements and other information with the SEC. You may read and copy any
reports, statements or other information filed by either company at the SEC's
public reference rooms in Washington, D.C., New York, New York and Chicago,
Illinois. Please call the SEC at 1-800-SEC-0330 for further information on the
public reference rooms. The companies' SEC filings are also available to the
public from commercial document retrieval services and at the web site
maintained by the SEC at "http://www.sec.gov." You can also obtain information
about DuPont and Conoco at the offices of the New York Stock Exchange, 20 Broad
Street, New York, New York 10005.

     Conoco filed a registration statement on Form S-4 to register with the SEC
Conoco Class B common stock to be issued to DuPont stockholders who tender their
shares in the exchange offer and whose shares of DuPont common stock are
accepted for exchange. DuPont will file a Schedule 13E-4 Issuer Tender Offer
Statement with the SEC with respect to the exchange offer. This document is a
part of that registration statement and constitutes an offering circular of
DuPont, in addition to being a prospectus of Conoco. As allowed by SEC rules,
this document does not contain all the information you can find in the
registration statement, the Schedule 13E-4 or the exhibits to the registration
statement and the Schedule 13E-4.

     The SEC allows DuPont to "incorporate by reference" information into this
document, which means important information may be disclosed to you by referring
you to another document filed separately with the SEC. The information
incorporated by reference is deemed to be part of this document, except for any
information superseded by information in, or incorporated by reference in, this
document. This document incorporates by reference the documents of DuPont set
forth below that have been previously filed with the SEC. These documents
contain important information about DuPont and its finances.

<TABLE>
<CAPTION>
DUPONT SEC FILINGS (FILE NO. 1-815)                     PERIOD
- -----------------------------------                     ------
<S>                                     <C>
Annual Report on Form 10-K/A..........  Year ended December 31, 1998, filed as
                                        amended on July 7, 1999
Proxy Statement.......................  Filed March 19, 1999
Quarterly Report on Form 10-Q/A.......  First quarter ended March 31, 1999,
                                        filed as amended on July 8, 1999
Form 8-K..............................  Filed April 16, 1999
Form 8-K..............................  Filed April 27, 1999.
Form 8-K..............................  Filed June 14, 1999.
Form 8-K..............................  Filed July 2, 1999.
Schedule 13E-3........................  Filed July 2, 1999.
</TABLE>

     DuPont is also incorporating by reference additional documents that the
company may file with the SEC between the date of this document and the
expiration date.

     Conoco has agreed to indemnify DuPont against specified liabilities such as
civil liabilities under the federal securities act, and to contribute to
payments which DuPont may be required to make in respect thereof, but solely
with respect to information relating to Conoco in this document. DuPont has
agreed to indemnify Conoco against specified liabilities such as civil
liabilities under the federal securities, and to contribute to payments which
Conoco may be required to make in respect thereof, but solely with respect to
information relating to DuPont in or incorporated by reference into this
document.

     DuPont may have already sent you some of the documents incorporated by
reference, but you can obtain any of them through the SEC or through DuPont,
Morgan Stanley or D.F. King, without charge, excluding all exhibits unless we
have specifically incorporated by reference an exhibit in this document.
Stockholders may obtain documents incorporated by reference in this document by
requesting them in writing or by telephone from D.F. King or Morgan Stanley at
their addresses and telephone numbers provided on the back cover of this
document.

     If you would like to request documents from either company, please do so
five business days before the expiration date to receive them in time.

     You should rely only on the information contained in this document. We have
not authorized anyone to provide you with information that is different. This
document is dated July 12, 1999. You should assume that the information
appearing in this document is accurate as of the date on the front cover of this
document only. The business, financial condition, results of operations and
prospects of DuPont and Conoco may have changed since that date.

                                       154
<PAGE>   155

                                  CONOCO INC.

                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                                               PAGE
                                                               ----
<S>                                                            <C>
Audited Consolidated Financial Statements

  Report of Independent Accountants.........................    F-2

  Consolidated Statement of Income -- Years Ended December
     31, 1998, 1997 and 1996................................    F-3

  Consolidated Balance Sheet -- at December 31, 1998 and
     1997...................................................    F-4

  Consolidated Statement of Stockholders' Equity/Owner's Net
     Investment and Accumulated Other Comprehensive
     Loss -- Years Ended December 31, 1998, 1997 and 1996...    F-5

  Consolidated Statement of Cash Flows -- Years Ended
     December 31, 1998, 1997 and 1996.......................    F-6

  Notes to Consolidated Financial Statements................    F-7

Unaudited Financial Information

  Supplemental Petroleum Data...............................   F-38

  Consolidated Quarterly Financial Data -- 1998 and 1997....   F-44

Interim Consolidated Financial Statements (Unaudited)

  Consolidated Statement of Income -- Three Months Ended
     March 31, 1999 and 1998................................   F-46

  Consolidated Balance Sheet -- at March 31, 1999...........   F-47

  Consolidated Statement of Cash Flows -- Three Months Ended
     March 31, 1999 and 1998................................   F-48

  Notes to Interim Consolidated Financial Statements........   F-49
</TABLE>

     Certain supplementary financial statement schedules have been omitted
because the information required to be set forth therein is either not
applicable or is shown in the financial statements or notes thereto.

                                       F-1
<PAGE>   156

                       REPORT OF INDEPENDENT ACCOUNTANTS

To the Stockholders and the Board of Directors of Conoco Inc.

     In our opinion, the consolidated financial statements listed in the
accompanying index present fairly, in all material respects, the financial
position of Conoco Inc. and its subsidiaries at December 31, 1998 and 1997, and
the results of their operations and their cash flows for each of the three years
in the period ended December 31, 1998, in conformity with generally accepted
accounting principles. These financial statements are the responsibility of the
Company's management; our responsibility is to express an opinion on these
consolidated financial statements based on our audits. We conducted our audits
of these statements in accordance with generally accepted auditing standards,
which require that we plan and perform the audit to obtain reasonable assurance
about whether the financial statements are free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for the opinion expressed above.

PRICEWATERHOUSECOOPERS LLP

Houston, Texas
February 15, 1999

                                       F-2
<PAGE>   157

                                  CONOCO INC.

                        CONSOLIDATED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31
                                                      -----------------------------------------
                                                         1998           1997           1996
                                                      -----------    -----------    -----------
                                                           (IN MILLIONS, EXCEPT PER SHARE)
<S>                                                   <C>            <C>            <C>
Revenues
  Sales and Other Operating Revenues*...............  $    22,796    $    25,796    $    24,230
  Other Income (Note 4).............................          372            467            186
                                                      -----------    -----------    -----------
          Total Revenues............................       23,168         26,263         24,416
                                                      -----------    -----------    -----------
Costs and Expenses
  Costs of Goods Sold and Other Operating
     Expenses.......................................       13,840         16,226         14,560
  Selling, General and Administrative Expenses......          736            726            755
  Stock Option Provision (Note 22)..................          236             --             --
  Exploration Expenses..............................          380            457            404
  Depreciation, Depletion and Amortization..........        1,113          1,179          1,085
  Taxes Other Than on Income* (Note 5)..............        5,970          5,532          5,637
  Interest and Debt Expense (Note 6)................          199             36             74
                                                      -----------    -----------    -----------
          Total Costs and Expenses..................       22,474         24,156         22,515
                                                      -----------    -----------    -----------
Income Before Income Taxes..........................          694          2,107          1,901
Provision for Income Taxes (Note 7).................          244          1,010          1,038
                                                      -----------    -----------    -----------
Net Income..........................................  $       450    $     1,097    $       863
                                                      ===========    ===========    ===========
Earnings Per Share (Note 8)
  Basic.............................................  $       .95    $      2.51    $      1.98
  Diluted...........................................  $       .95    $      2.51    $      1.98
Weighted Average Shares Outstanding:
  Class A**.........................................           37             --             --
  Class B...........................................          437            437            437
                                                      -----------    -----------    -----------
          Total Basic...............................          474            437            437
  Stock Options**...................................            1             --             --
                                                      -----------    -----------    -----------
          Total Diluted.............................          475            437            437
                                                      ===========    ===========    ===========
- ---------------
 * Includes petroleum excise taxes..................  $     5,801    $     5,349    $     5,461
** Earnings per share for the periods prior to the
   Offerings was calculated using only Class B
   Common Stock as required by SFAS 128 (see Note
   8).
</TABLE>

          See accompanying Notes to Consolidated Financial Statements

                                       F-3
<PAGE>   158

                                  CONOCO INC.

                           CONSOLIDATED BALANCE SHEET

                                     ASSETS

<TABLE>
<CAPTION>
                                                                 DECEMBER 31
                                                              ------------------
                                                               1998       1997
                                                              -------    -------
                                                                (IN MILLIONS)
<S>                                                           <C>        <C>
Current Assets
  Cash and Cash Equivalents.................................  $   394    $ 1,147
  Marketable Securities.....................................       --          7
  Accounts and Notes Receivable (Note 9)....................    1,191      1,497
  Notes Receivable -- Related Parties (Note 3)..............       --        490
  Inventories (Note 10).....................................      807        830
  Prepaid Expenses..........................................      378        236
                                                              -------    -------
          Total Current Assets..............................    2,770      4,207
Property, Plant and Equipment (Note 11).....................   22,094     21,229
Less: Accumulated Depreciation, Depletion and
  Amortization..............................................  (10,681)   (10,401)
                                                              -------    -------
Net Property, Plant and Equipment...........................   11,413     10,828
                                                              -------    -------
Investment in Affiliates (Note 12)..........................    1,363      1,085
Long-Term Notes Receivable -- Related Parties (Note 3)......       --        450
Other Assets (Note 13)......................................      529        492
                                                              -------    -------
          Total.............................................  $16,075    $17,062
                                                              =======    =======
</TABLE>

<TABLE>
<CAPTION>
          LIABILITIES AND STOCKHOLDERS' EQUITY/OWNER'S NET INVESTMENT
<S>                                                           <C>        <C>
Current Liabilities
  Accounts Payable (Note 14)................................  $ 1,312    $ 1,090
  Short-Term Borrowings -- Related Parties (Note 3).........       --        644
  Other Short-Term Borrowings and Capital Lease Obligations
     (Note 15)..............................................       52         72
  Income Taxes (Note 7).....................................      199        545
  Other Accrued Liabilities (Note 16).......................    1,162      1,289
                                                              -------    -------
          Total Current Liabilities.........................    2,725      3,640
Long-Term Borrowings -- Related Parties (Note 3)............    4,596      1,450
Other Long-Term Borrowings and Capital Lease Obligations
  (Note 17).................................................       93        106
Deferred Income Taxes (Note 7)..............................    1,714      1,739
Other Liabilities and Deferred Credits (Note 18)............    2,200      1,922
                                                              -------    -------
          Total Liabilities.................................   11,328      8,857
                                                              -------    -------
Commitments and Contingent Liabilities (Note 26)
Minority Interests (Note 19)................................      309        309
Owner's Net Investment......................................       --      8,087
Stockholders' Equity (Note 20)
  Preferred Stock, $.01 par value:
  250,000,000 shares authorized; none issued................       --         --
  Class A Common Stock, $.01 par value:
  3,000,000,000 shares authorized; 191,497,821 shares
     issued.................................................        2         --
  Class B Common Stock; $.01 par value:
  1,600,000,000 shares authorized; 436,543,573 shares issued
     and outstanding........................................        4         --
  Additional Paid-In Capital................................    4,955         --
  Accumulated Deficit.......................................     (244)        --
  Accumulated Other Comprehensive Loss (Note 21)............     (274)      (191)
  Treasury Stock, at cost (249,863 Class A shares)..........       (5)        --
                                                              -------    -------
          Total Stockholders' Equity........................    4,438       (191)
                                                              -------    -------
          Total Stockholders' Equity/Owner's Net
           Investment.......................................    4,438      7,896
                                                              -------    -------
          Total.............................................  $16,075    $17,062
                                                              =======    =======
</TABLE>

          See accompanying Notes to Consolidated Financial Statements

                                       F-4
<PAGE>   159

                                  CONOCO INC.

           CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY/OWNER'S NET
              INVESTMENT AND ACCUMULATED OTHER COMPREHENSIVE LOSS
                               (NOTES 20 AND 21)

<TABLE>
<CAPTION>
                                                                                                          ACCUMULATED
                                                              ADDITIONAL                                     OTHER
                                       OWNER'S NET   COMMON    PAID-IN     ACCUMULATED   COMPREHENSIVE   COMPREHENSIVE   TREASURY
                                       INVESTMENT    STOCK     CAPITAL       DEFICIT        INCOME           LOSS         STOCK
                                       -----------   ------   ----------   -----------   -------------   -------------   --------
                                                                             (IN MILLIONS)
<S>                                    <C>           <C>      <C>          <C>           <C>             <C>             <C>
Balance January 1, 1996..............    $ 6,762                                                             $  (8)
Comprehensive Income
  Net Income.........................        863                                            $  863
  Other Comprehensive Income (Loss):
    Foreign Currency Translation
      Adjustment.....................                                                          (39)
    Minimum Pension Liability
      Adjustment.....................                                                          (10)
                                                                                            ------
      Other Comprehensive Loss.......                                                          (49)            (49)
                                                                                            ------
        Comprehensive Income.........                                                       $  814
                                                                                            ======
Net Cash Contribution to Owner.......       (993)
Other Transfer from Owner............          4
                                         -------                                                             -----
Balance December 31, 1996............      6,636                                                               (57)
Comprehensive Income
  Net Income (Loss)..................      1,097                                            $1,097
  Other Comprehensive Income (Loss):
    Foreign Currency Translation
      Adjustment.....................                                                         (121)
    Minimum Pension Liability
      Adjustment.....................                                                          (13)
                                                                                            ------
      Other Comprehensive Loss.......                                                         (134)           (134)
                                                                                            ------
        Comprehensive Income.........                                                       $  963
                                                                                            ======
Net Cash Contribution from Owner.....        360
Other Transfers to Owner.............         (6)
                                         -------                                                             -----
Balance December 31, 1997............      8,087                                                              (191)
Comprehensive Income
  Net Income (Loss)..................        694                              $(244)        $  450
  Other Comprehensive Income (Loss):
    Foreign Currency Translation
      Adjustment.....................                                                          (25)
    Minimum Pension Liability
      Adjustment.....................                                                          (58)
                                                                                            ------
      Other Comprehensive Loss.......                                                          (83)            (83)
                                                                                            ------
        Comprehensive Income.........                                                       $  367
                                                                                            ======
Net Cash Contribution to Owner.......       (512)
Dividends to Owner (Note 3)..........     (8,200)
Other Transfers from Owner...........        433
Capitalization from Owner at
  Offerings..........................       (502)      $4       $  498
Initial Public Offering..............                   2        4,226
Compensation Plans...................                               (5)
Treasury Stock Purchases.............                                                                                      $(5)
Stock Option Provision (Note 22).....                              236
                                         -------       --       ------        -----                          -----         ---
Balance December 31, 1998............    $    --       $6       $4,955        $(244)                         $(274)        $(5)
                                         =======       ==       ======        =====                          =====         ===
</TABLE>

          See accompanying Notes to Consolidated Financial Statements

                                       F-5
<PAGE>   160

                                  CONOCO INC.

                      CONSOLIDATED STATEMENT OF CASH FLOWS

<TABLE>
<CAPTION>
                                                                YEAR ENDED DECEMBER 31
                                                              ---------------------------
                                                               1998      1997      1996
                                                              -------   -------   -------
                                                                     (IN MILLIONS)
<S>                                                           <C>       <C>       <C>
Cash Provided by Operations
  Net Income................................................  $   450   $ 1,097   $   863
  Adjustments to Reconcile Net Income to Cash Provided by
     Operations:
     Depreciation, Depletion and Amortization...............    1,113     1,179     1,085
     Dry Hole Costs and Impairment of Unproved Properties...      163       169       137
     Stock Option Provision (Note 22).......................      236        --        --
     Inventory Write-down to Market (Note 10)...............       97        --        --
     Deferred Income Taxes (Note 7).........................      (32)       16        10
     Income Applicable to Minority Interests................       21        24        19
     Other Non-Cash Charges and Credits -- Net..............     (137)     (271)       66
     Decrease (Increase) in Operating Assets:
       Accounts and Notes Receivable........................      125       127      (280)
       Inventories..........................................      (62)      (79)       22
       Other Operating Assets...............................     (172)      (96)       10
     Increase (Decrease) in Operating Liabilities:
       Accounts Payable and Other Operating Liabilities.....      (85)      622       362
       Accrued Interest and Income Taxes (Notes 6 and 7)....     (344)       88       102
                                                              -------   -------   -------
          Cash Provided by Operations.......................    1,373     2,876     2,396
                                                              -------   -------   -------
Investing Activities (Note 24)
  Purchases of Property, Plant and Equipment................   (1,965)   (2,644)   (1,616)
  Investments in Affiliates.................................     (385)     (339)     (326)
  Proceeds from Sales of Assets and Subsidiaries............      721       565       328
  Net Decrease (Increase) in Short-Term Financial
     Instruments............................................       31       381       (33)
                                                              -------   -------   -------
          Cash Used for Investing Activities................   (1,598)   (2,037)   (1,647)
                                                              -------   -------   -------
Financing Activities
  Short-Term Borrowings -- Receipts.........................       --        24        --
                            -- Payments.....................      (26)       (2)      (90)
  Other Long-Term Borrowings -- Receipts....................       --        33        38
                                  -- Payments...............       (4)       (3)       (1)
  Proceeds from Initial Public Offering (Notes 3 and 20)....    4,228        --        --
  Treasury Stock Purchases..................................       (5)       --        --
  Transactions with Related Parties:
     Notes Receivable -- Receipts...........................      444         9       402
                        -- Payments.........................     (152)     (617)       (9)
     Borrowings -- Receipts.................................      927       413       706
                 -- Payments................................   (5,434)     (695)     (520)
     Net Cash Contribution From (To) Owner..................     (512)      360      (993)
  Increase (Decrease) in Minority Interests (Note 19).......      (21)      (21)      280
                                                              -------   -------   -------
          Cash Used for Financing Activities................     (555)     (499)     (187)
                                                              -------   -------   -------
Effect of Exchange Rate Changes on Cash.....................       27       (39)       (2)
                                                              -------   -------   -------
Increase (Decrease) in Cash and Cash Equivalents............     (753)      301       560
Cash and Cash Equivalents at Beginning of Year..............    1,147       846       286
                                                              -------   -------   -------
Cash and Cash Equivalents at End of Year....................  $   394   $ 1,147   $   846
                                                              =======   =======   =======
SUPPLEMENTAL SCHEDULE OF NON-CASH FINANCING ACTIVITIES:
  Transactions with Related Parties (Note 3):
     Dividends to Owner.....................................  $(8,200)
     Promissory Note Issued.................................    7,500
     Notes Receivable Reduced...............................      700
     Borrowings Contributed to Capital......................     (544)
                                                              -------
          Total Non-Cash Financing Activities...............  $  (544)
                                                              =======
</TABLE>

          See accompanying Notes to Consolidated Financial Statements
                                       F-6
<PAGE>   161

                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

1. BASIS OF PRESENTATION

     Conoco Inc., including its consolidated subsidiaries, ("Conoco" or the
"Company") is an integrated, global energy company that is involved in the
Upstream and Downstream segments of the petroleum business. Activities of the
Upstream operating segment include exploring for, and developing, producing and
selling crude oil, natural gas and natural gas liquids. Activities of the
Downstream operating segment include refining crude oil and other feedstocks
into petroleum products, buying and selling crude oil and refined products and
transporting, distributing and marketing petroleum products. The Company has
four reporting segments for its Upstream and Downstream operating segments,
reflecting geographic division between the United States and International.
Corporate and Other includes general corporate expenses, financing costs and
other non-operating items, and results for electric power and related-party
insurance operations.

     The initial public offering (the "Offerings") of the Class A Common Stock
of Conoco, a subsidiary of E.I. du Pont de Nemours and Company ("DuPont"),
commenced on October 21, 1998, and the Class A Common Stock began trading on the
New York Stock Exchange on October 22, 1998. The Offerings consisted of
191,456,427 shares of Class A Common Stock issued at a price of $23 per share,
and represented DuPont's first step in the planned divestiture of its entire
petroleum business. Through its ownership of 100% of the Company's Class B
Common Stock (436,543,573 shares), DuPont owned approximately 70% of the
Company's common stock representing approximately 92% of the combined voting
power of all classes of voting stock of the Company at December 31, 1998. The
holders of Class A Common Stock and Class B Common Stock generally have
identical rights, except that holders of Class A Common Stock are entitled to
one vote per share while holders of Class B Common Stock are entitled to five
votes per share on matters to be voted on by stockholders.

     Effective at the time of the Offerings, Conoco's capital structure was
established and the transfer to Conoco of certain subsidiaries previously owned
by DuPont was substantially complete, resulting in direct ownership of those
subsidiaries. Accordingly, for periods subsequent to the Offerings, financial
information is presented on a consolidated basis.

     Prior to the date of the Offerings, operations were conducted by Conoco
Inc., subsidiaries of Conoco Inc. and, in some cases, subsidiaries of DuPont.
The accompanying Consolidated Financial Statements for these periods are
presented on a carve-out basis prepared from DuPont's historical accounting
records, and include the historical operations of both entities owned by Conoco
and operations transferred to Conoco by DuPont at the time of the Offerings. In
this context, no direct ownership relationship existed among all the various
units comprising Conoco. Accordingly, DuPont and its subsidiaries' net
investment in Conoco ("Owner's Net Investment") is shown in lieu of
Stockholders' Equity in the Consolidated Financial Statements. Net Cash
Contributions from/to Owner prior to the Offerings include funds transferred
between Conoco and DuPont for operating needs, cash dividends paid and other
equity transactions.

     The Consolidated Statement of Income includes all revenues and costs
directly attributable to Conoco, including costs for facilities, functions and
services used by Conoco at shared sites and costs for certain functions and
services performed by centralized DuPont organizations and directly charged to
Conoco based on usage. In addition, services performed by Conoco on DuPont's
behalf are directly charged to DuPont. The results of operations also include
allocations of DuPont's general corporate expenses through the date of the
Offerings.

     Prior to the date of the Offerings, all charges and allocations of cost for
facilities, functions and services performed by DuPont organizations for Conoco
have been deemed to have been paid by Conoco to DuPont, in cash, in the period
in which the cost was recorded in the Consolidated Financial Statements.
Allocations of current income taxes receivable or payable are similarly deemed
to have been remitted, in cash, by or to DuPont in the period the related income
taxes were recorded. Subsequent to the Offerings,

                                       F-7
<PAGE>   162
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

such costs are billed directly under transitional service agreements, and income
taxes are paid directly to the taxing authorities, or to DuPont, as appropriate.

     All of the allocations and estimates in the Consolidated Financial
Statements are based on assumptions that management believes are reasonable
under the circumstances. However, these allocations and estimates are not
necessarily indicative of the costs and expenses that would have resulted if
Conoco had been operated as a separate entity for periods prior to the
Offerings.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

  Basis of Consolidation

     The accounts of wholly owned and majority-owned subsidiaries are included
in the Consolidated Financial Statements. The equity method is used to account
for investments in corporate entities, partnerships and limited liability
companies in which the Company exerts significant influence, generally having a
20-50% ownership interest. The Company's 50.1 percent non-controlling interest
in Petrozuata C.A. in Venezuela is accounted for using the equity method because
the minority shareholder, a subsidiary of the national oil company of the
Republic of Venezuela, has substantive participating rights. Undivided interests
in oil and gas joint ventures and transportation assets are combined on a pro
rata basis. Other investments, excluding marketable securities, are carried at
cost.

  Use of Estimates

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets, liabilities, revenues
and expenses, and the disclosure of contingent assets and liabilities. Actual
results may differ from those estimates and assumptions.

  Cash Equivalents

     Cash equivalents represent investments with maturities of three months or
less from time of purchase. They are carried at cost plus accrued interest,
which approximates fair value.

  Inventories

     Inventories are carried at the lower of cost or market. Cost is determined
under the last-in, first-out ("LIFO") method for inventories of crude oil and
petroleum products. Cost for remaining inventories, principally materials and
supplies, is generally determined by the average cost method. Market is
determined on a regional basis and any lower of cost or market write-down is
recorded as a permanent adjustment to the cost of inventory.

  Property, Plant and Equipment ("PP&E")

     PP&E is carried at cost. Depreciation of PP&E, other than oil and gas
properties, is generally computed on a straight-line basis over the estimated
economic lives of the facilities, which for major assets range from 14 to 25
years. When assets that are part of a composite group are retired, sold,
abandoned or otherwise disposed of, the cost, net of sales proceeds or salvage
value, is charged against the accumulated reserve for depreciation, depletion
and amortization ("DD&A"). Where depreciation is accumulated for specific
assets, gains or losses on disposal are included in period income.

     Maintenance and repairs are charged to expense; replacements and
improvements are capitalized.

  Oil and Gas Properties

     The Company follows the successful efforts method of accounting, under
which the costs of property acquisitions, successful exploratory wells,
development wells and related support equipment and facilities

                                       F-8
<PAGE>   163
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

are capitalized. The costs of producing properties are amortized at the field
level on a unit-of-production method.

     Unproved properties which are individually significant are periodically
assessed for impairment, whereas the impairment of individually insignificant
properties is provided by amortizing the costs based on past experience and the
estimated holding period. Exploratory well costs are expensed in the period the
well is determined to be unsuccessful. All other exploration costs, including
geological and geophysical costs, production costs and overhead costs, are
expensed in the period incurred.

     The estimated costs of dismantlement and removal of oil and gas related
facilities are accrued over the properties' productive lives using the
unit-of-production method and recognized as a liability as the amortization
expense is recorded.

  Impairment of Long-Lived Assets

     Long-lived assets with recorded values that are not expected to be
recovered through future cash flows are written down to current fair value
through additional amortization or depreciation provisions. Fair value is
generally determined from estimated discounted future net cash flows. Upstream
properties are evaluated at the field level including both proved and
risk-adjusted unproved reserves.

  Environmental Costs

     Environmental expenditures are expensed or capitalized, as appropriate,
depending on their future economic benefit. Expenditures that relate to an
existing condition caused by past operations, and that do not have future
economic benefit, are expensed. Liabilities related to these future costs are
recorded on an undiscounted basis when environmental assessments and/or
remediation activities are probable and the costs can be reasonably estimated.

  Stock Compensation

     The Company applies Accounting Principles Board ("APB") Opinion No. 25,
"Accounting for Stock Issued to Employees", and related interpretations in
accounting for stock options. Pro forma information regarding changes in net
income and earnings per share data if the accounting prescribed by Statement of
Financial Accounting Standards ("SFAS") No. 123, "Accounting for Stock-Based
Compensation", had been applied is presented in Note 22.

  Income Taxes

     The provision for income taxes has been determined using the asset and
liability approach of accounting for income taxes. Under this approach, deferred
taxes represent the future tax consequences expected to occur when the reported
amounts of assets and liabilities are recovered or paid. The provision for
income taxes represents income taxes paid or payable for the current year plus
the change in deferred taxes during the year. Deferred taxes result from
differences between the financial and tax bases of the Company's assets and
liabilities and are adjusted for changes in tax rates and tax laws when changes
are enacted. Valuation allowances are recorded to reduce deferred tax assets
when it is more likely than not that a tax benefit will not be realized.

     Prior to the date of the Offerings, Conoco was included in the DuPont
consolidated tax return and the provision for income taxes was determined using
the loss benefit method. Under the loss benefit method, the current tax
provision or benefit is allocated based on the amount expected to be paid or
received from the consolidated group and benefits of losses and credit carry
forwards are recorded when such benefits are expected to be realized by members
of the consolidated group. The pro forma effect on the Consolidated

                                       F-9
<PAGE>   164
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

Statement of Income reflecting the provision for income taxes on a separate
return basis prior to the Offerings is not material. For periods ending after
the Offerings, Conoco will file a separate tax return. Accordingly, for periods
subsequent to the Offerings, the provision for income taxes has been determined
on a separate tax return basis.

     Provision has been made for income taxes on unremitted earnings of
subsidiaries and affiliates, except in cases in which earnings are deemed to be
permanently invested.

  Foreign Currency Translation

     Local currency is the functional currency for the Company's integrated
Western European petroleum operations. For subsidiaries whose functional
currency is the local currency, assets and liabilities denominated in local
currency are translated into United States dollars at end-of-period exchange
rates. The resultant translation adjustment is a component of Accumulated Other
Comprehensive Loss (see Note 21). Assets and liabilities denominated in other
than the local currency are remeasured into the local currency prior to
translation into United States dollars, and the resultant exchange gains or
losses, together with their related tax effects, are included in income in the
period in which they occur. Income and expenses are translated into United
States dollars at average exchange rates in effect during the period.

     For subsidiaries where the United States dollar is the functional currency,
all foreign currency asset and liability amounts are remeasured into United
States dollars at end-of-period exchange rates, except for inventories, prepaid
expenses and property, plant and equipment, which are remeasured at historical
rates. Foreign currency income and expenses are remeasured at average exchange
rates in effect during the year, except for expenses related to balance sheet
amounts, which are remeasured at historical exchange rates. Exchange gains and
losses arising from remeasurement of foreign currency-denominated monetary
assets and liabilities are included in current period income.

     Effective January 1, 1999, the Euro was adopted as the local currency by 11
countries participating in the European Economic and Monetary Union. For those
countries in which the Company operates, the Euro concurrently became the
functional currency.

  Commodity Hedging and Trading Activities

     The Company enters into energy-related futures, forwards, swaps, and
options in various markets to balance its physical systems, to meet customer
needs, and to manage its exposure to price fluctuations on anticipated crude
oil, natural gas, refined product and electric power transactions.

     Under the Company's policy, hedging includes only those transactions that
offset physical positions and reduce overall Company exposure to price risk.
Trading is defined as any transaction that does not meet the definition of
hedging.

     Gains and losses on hedging contracts are deferred and included in the
measurement of the related transaction. Changes in market values of trading
contracts are reflected in income in the period the change occurs.

     In the event a derivative designated as a hedge is terminated prior to the
maturation of the hedged transaction, gains or losses realized at termination
are deferred and included in the measurement of the hedged transaction. If a
hedged transaction matures, is sold, extinguished or terminated prior to the
maturity of a derivative designated as a hedge of such transaction, gains or
losses associated with the derivative through the date the transaction matured
are included in the measurement of the hedged transaction and the derivative is
reclassified as for trading purposes. Derivatives designated as a hedge of

                                      F-10
<PAGE>   165
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

an anticipated transaction are reclassified as for trading purposes if the
anticipated transaction is no longer likely to occur.

     In the Consolidated Statement of Cash Flows, the Company reports the cash
flows resulting from its hedging activities in the same category as the related
item that is being hedged.

  Recent Accounting Standards

     In June 1997, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 131, "Disclosures about Segments of an Enterprise and Related Information,"
which the Company has adopted for the year ended December 31, 1998. This
standard requires disclosing segment information on the same basis used
internally for evaluating segment performance and deciding how to allocate
resources to segments. It also requires disclosure of revenue and long-lived
assets attributed to operations in individual countries outside the United
States for which such information is material. No substantive changes in segment
reporting resulted from this standard. The Company has four reporting segments
for its Upstream and Downstream operating segments, reflecting geographic
division between the United States and International. In addition, geographic
reporting changed with revenues and long-lived assets attributed to operations
in the United Kingdom, Germany and Norway disclosed separately.

     In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosure
About Pensions and Other Postretirement Benefits," that revised disclosure
requirements for pension and other postretirement benefits. This statement did
not affect measurement of the expense of the Company's pension and other
postretirement benefits. The Company has adopted the disclosure requirements of
this Statement for the year ended December 31, 1998.

     In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities," which requires that companies recognize all
derivatives as either assets or liabilities in the balance sheet and measure
those instruments at fair value. SFAS No. 133 provides, if certain conditions
are met, that a derivative may be specifically designated as:

  -  a hedge of the exposure to changes in the fair value of a recognized asset
     or liability or an unrecognized firm commitment (fair value hedge),

  -  a hedge of the exposure to variable cash flows of a forecasted transaction
     (cash flow hedge), or

  -  a hedge of the foreign currency exposure of a net investment in a foreign
     operation, an unrecognized firm commitment, an available-for-sale security
     or a foreign-currency-denominated forecasted transaction (foreign currency
     hedge).

     Under SFAS No. 133, the accounting for changes in fair value of a
derivative depends on its intended use and designation. For a fair value hedge,
the gain or loss is recognized in earnings in the period of change together with
the offsetting loss or gain on the hedged item. For a cash flow hedge, the
effective portion of the derivative's gain or loss is initially reported as a
component of other comprehensive income and subsequently reclassified into
earnings when the forecasted transaction affects earnings. For a foreign
currency hedge, the gain or loss is reported in other comprehensive income as
part of the cumulative translation adjustment. For all other items not
designated as hedging instruments, the gain or loss is recognized in earnings in
the period of change. The Company is required to adopt this Statement by the
first quarter of 2000 and is currently assessing its effect on the Consolidated
Financial Statements.

3. RELATED PARTY TRANSACTIONS

     The Consolidated Financial Statements include significant transactions with
DuPont involving services (such as cash management, other financial services,
purchasing, legal, computer and corporate aviation)
                                      F-11
<PAGE>   166
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

and general corporate expenses that were provided between Conoco and centralized
DuPont organizations. For periods prior to the Offerings, the costs of services
have been directly charged or allocated between Conoco and DuPont using methods
management believes are reasonable. These methods include negotiated usage
rates, dedicated asset assignment and proportionate corporate formulas involving
assets, revenues and employees. Such charges and allocations are not necessarily
indicative of what would have been incurred if Conoco had been a separate
entity.

     Amounts charged and allocated to Conoco for these services were $121, $125
and $101 for the years 1998, 1997 and 1996, respectively, and are principally
included in Selling, General and Administrative Expenses. Conoco provided DuPont
services, such as computer, legal and purchasing, as well as certain technical
and plant operating services, which amounted to $61, $62 and $66 in 1998, 1997
and 1996, respectively. These charges to DuPont were treated as reductions, as
appropriate, of Cost of Goods Sold and Other Operating Expenses or Selling,
General and Administrative Expenses.

     Interest expense charged by DuPont was $264, $124 and $143 for the years
1998, 1997 and 1996, respectively, and reflects market-based interest rates. A
portion of this and other interest and debt expense was capitalized as cost
associated with major construction projects. Interest income from DuPont was
$43, $11 and $57 for the same years and also reflects market-based interest
rates.

     Sales and Other Operating Revenues include sales of products from Conoco to
DuPont, principally natural gas and gas liquids to supply several DuPont plant
sites. These sales totaled $427, $420 and $413 for the years 1998, 1997 and
1996, respectively. Also included are revenues from insurance premiums charged
to DuPont for property and casualty coverage outside the United States. These
revenues totaled $20, $22 and $21 for the years 1998, 1997 and 1996,
respectively. Purchases of products from DuPont during these periods were not
material.

     Subsequent to the Offerings, these intercompany arrangements between DuPont
and Conoco, excluding insurance coverage provided to DuPont, are being provided
under transition service agreements or other long-term agreements. It is not
anticipated that a change, if any, in these costs and revenues would have a
material effect on the Company's results of operations or consolidated financial
position.

     Accounts and Notes Receivable include amounts due from DuPont of $80 and
$79 at December 31, 1998 and 1997, respectively, representing current month
balances of transactions between Conoco and DuPont, mainly product sales and
certain charges billed annually. Accounts Payable include amounts due DuPont of
$52 and $4 at December 31, 1998 and 1997, respectively. Other Liabilities
include accrued interest of $51 due DuPont at December 31, 1998.

     Amounts representing notes receivable or borrowings from DuPont, including
its subsidiary organizations, are identified as related parties and presented
separately in the Consolidated Balance Sheet. The current portion of Notes
Receivable represents the accumulation of a variety of cash transfers and
operating transactions with DuPont. These balances are generally interest
bearing and represent net amounts of cash transferred for funding and cash
management purposes and amounts charged between the companies for certain
product and service purchases. At December 31, 1997, the long-term portion of
Notes Receivable and amounts shown for Short-Term and Long-Term Borrowings
represent borrowings between Conoco and DuPont with established due dates at
market-based interest rates, except for certain short-term non-interest bearing
borrowings due DuPont of $492. At December 31, 1998, related balances only
reflected long-term borrowings due DuPont as further described.

     In July 1998, a dividend was declared and paid by the Company in the form
of a promissory note (the "Note") to DuPont in the aggregate principal amount of
$7,500 bearing interest at a rate of 6.0125 percent per annum and due on January
2, 2000. The Note may be voluntarily prepaid without penalty or premium. The
Note also provides for mandatory prepayments in the event cash proceeds are
realized by

                                      F-12
<PAGE>   167
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

the Company from the incurrence of indebtedness or the issuance of equity
securities by the Company or its subsidiaries. The Note includes certain
covenants and customary events of default, including failure to pay interest
when due, certain events of bankruptcy of the Company and change of control. The
consent of DuPont is also required prior to the Company entering into certain
transactions.

     In September 1998, the Company declared a dividend of $700 paid through a
reduction of notes receivable from DuPont and further certain intercompany notes
were created.

     The net proceeds from the Offerings referred to in Note 1 were $4,228,
after deducting the underwriting discounts and commissions payable by the
Company. The Company used these net proceeds to repay indebtedness owed to
DuPont or purchase a portion of the indebtedness owed by certain subsidiaries of
the Company to DuPont as follows:

          (a) to pay accrued interest ($124) on the $7,500 Note and then to
     repay principal ($2,654) on such Note to the extent necessary to reduce the
     principal amount to $4,846;

          (b) to purchase certain intercompany notes denominated in Norwegian
     Kroner with an aggregate principal amount of approximately $461 after
     conversion to U.S. dollars, together with accrued interest ($9);

          (c) to pay accrued interest ($8) and a portion of the principal ($820)
     on a certain other intercompany note to the extent necessary to reduce the
     principal amount to $7;

          (d) to pay a portion of the principal ($152) on an intercompany demand
     note which reduced the outstanding balance to $52.

     During 1998, DuPont made capital contributions of $544 to the Company
reflecting the retirement of certain non-interest bearing borrowings of $492 and
the remaining balance of $52 on the foregoing demand note.

     Subsequent to the Offerings, the Company made an additional principal
payment of $257 on the Note reducing the outstanding balance to $4,589 at
December 31, 1998. Aggregate borrowings from related parties at December 31,
1998, totaled $4,596 and reflected a weighted average interest rate of 6.0
percent with maturity on January 2, 2000.

     On October 27, 1998, the Company and DuPont entered into a revolving credit
agreement under which DuPont will provide the Company with a revolving credit
facility in principal amount of up to $500. Loans under the revolving credit
agreement will be subject to mandatory repayment to the extent the Company's
cash and cash equivalents exceed $325 or such higher amount as the Company and
DuPont may agree. Loans under this facility bear interest at a rate equal to
30-day LIBOR plus 0.20 percent per annum and may be voluntarily prepaid without
penalty or premium. There was no outstanding debt under this facility on
December 31, 1998.

     The Company is obligated to repay all outstanding debt owed to DuPont at
such time as DuPont's direct or indirect voting power in the Company falls below
50 percent of the outstanding voting power of the Company. The Company intends
to refinance outstanding related party debt owed to DuPont with a combination of
commercial paper and public debt in 1999.

                                      F-13
<PAGE>   168
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

4. OTHER INCOME

<TABLE>
<CAPTION>
                                                              1998    1997    1996
                                                              ----    ----    ----
<S>                                                           <C>     <C>     <C>
Interest income
  Related parties (see Note 3)..............................  $ 43    $ 11    $ 57
  Other, net of miscellaneous interest expense..............    46      66      67
                                                              ----    ----    ----
                                                                89      77     124
Equity in earnings of affiliates (see Note 12)..............    22(1)   40     (25)
Gain on sales of assets(2)..................................   206     314      84
Exchange gain (loss)........................................    51      27      (5)
Other -- net................................................     4       9       8
                                                              ----    ----    ----
                                                              $372    $467    $186
                                                              ====    ====    ====
</TABLE>

- ---------------

(1) Includes a $5 charge for write-down of inventories to market in accordance
    with the Company's inventory valuation policy (see Note 2).

(2) 1998 includes a gain of $89 from sale of certain Upstream properties in the
    North Sea and the United States. 1997 includes a gain of $239 from sale of
    certain Upstream properties in the North Sea.

5. TAXES OTHER THAN ON INCOME

<TABLE>
<CAPTION>
                                                               1998     1997     1996
                                                              ------   ------   ------
<S>                                                           <C>      <C>      <C>
Petroleum excise taxes
  U.S.......................................................  $1,286   $1,201   $1,145
  Non-U.S...................................................   4,515    4,148    4,316
                                                              ------   ------   ------
                                                               5,801    5,349    5,461
Payroll taxes...............................................      42       43       48
Property taxes..............................................      64       63       55
Production and other taxes..................................      63       77       73
                                                              ------   ------   ------
                                                              $5,970   $5,532   $5,637
                                                              ======   ======   ======
</TABLE>

6. INTEREST AND DEBT EXPENSE

<TABLE>
<CAPTION>
                                                              1998     1997     1996
                                                              ----     ----     ----
<S>                                                           <C>      <C>      <C>
Interest and debt cost incurred
  Related parties (see Note 3)..............................  $264     $124     $143
  Other.....................................................     7        6        6
                                                              ----     ----     ----
                                                               271      130      149
Less: Interest and debt cost capitalized....................    72       94       75
                                                              ----     ----     ----
Interest and debt expense...................................  $199     $ 36     $ 74
                                                              ====     ====     ====
</TABLE>

     Interest paid (net of amounts capitalized) was $145 in 1998, $33 in 1997
and $77 in 1996.

                                      F-14
<PAGE>   169
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

7. PROVISION FOR INCOME TAXES

<TABLE>
<CAPTION>
                                                              1998      1997       1996
                                                              ----     ------     ------
<S>                                                           <C>      <C>        <C>
Current tax expense
  U.S. federal..............................................  $(57)    $   64     $  155
  U.S. state and local......................................    10          5          8
  Non-U.S. .................................................   323        925        865
                                                              ----     ------     ------
          Total.............................................   276        994      1,028
                                                              ----     ------     ------
Deferred tax expense
  U.S. federal..............................................   (51)        80        (78)
  U.S. state and local......................................    (5)         8         --
  Non-U.S. .................................................    24        (72)        88
                                                              ----     ------     ------
          Total.............................................   (32)        16         10
                                                              ----     ------     ------
Provision for Income Taxes..................................   244      1,010      1,038
Foreign Currency Translation(1).............................   (22)        --         --
Minimum Pension Liability(1)................................   (26)        (7)        (5)
                                                              ----     ------     ------
          Total Provision...................................  $196     $1,003     $1,033
                                                              ====     ======     ======
</TABLE>

- ---------------

(1) Represents respective deferred tax provisions for adjustments included in
    other comprehensive loss (see Note 21).

     Total income taxes paid worldwide were $714 in 1998, $935 in 1997 and $901
in 1996.

     The significant components of deferred tax assets and liabilities at
December 31, 1998 and 1997 are as follows:

<TABLE>
<CAPTION>
                                                                   1998                     1997
                                                           --------------------     --------------------
                                                           ASSET      LIABILITY     ASSET      LIABILITY
                                                           ------     ---------     ------     ---------
<S>                                                        <C>        <C>           <C>        <C>
Property, plant and equipment............................  $  233      $2,296       $  182      $2,219
Employee benefits........................................     247          --          166          --
Other accrued expenses...................................     237          --          273          --
Inventories..............................................      --          90           --         102
Tax loss/tax credit carry forwards.......................     496          --          417          --
Other....................................................      25         188           27         169
                                                           ------      ------       ------      ------
          Total..........................................  $1,238      $2,574       $1,065      $2,490
                                                                       ======                   ======
Valuation allowances.....................................    (423)                    (392)
                                                           ------                   ------
          Net............................................  $  815                   $  673
                                                           ======                   ======
</TABLE>

     Valuation allowances, which reduce deferred tax assets to an amount that
will more likely than not be realized, increased $31 in 1998, primarily
reflecting increases in tax assets representing operating losses incurred in
exploration and start-up operations. Valuation allowances decreased by $22 in
1997, principally reflecting a $37 decrease related to tax assets representing
operating losses which the Company determined will more likely than not be
realized in future years. This decrease was partially offset by an increase of
$15 reflecting offsets to operating losses. Valuation allowances in 1996
increased by $52 to offset increases in deferred tax assets resulting primarily
from operating losses incurred in exploration and start-up operations.

                                      F-15
<PAGE>   170
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     Under the tax laws of various jurisdictions in which the Company operates,
deductions or credits that cannot be fully utilized for tax purposes during the
current year may be carried forward, subject to statutory limitations, to reduce
taxable income or taxes payable in a future year. At December 31, 1998, the tax
effect of such carry forwards approximated $496. Of this amount, $312 has no
expiration date, $3 expires in 1999, $5 expires in 2000, $75 expires in 2001,
$46 expires in 2002, and $55 expires in 2003 and later years.

     Current deferred tax liabilities (included in the Consolidated Balance
Sheet caption "Income Taxes") were $76 and $122 at December 31, 1998 and 1997,
respectively.

     Current deferred tax assets included in Prepaid Expenses were $7 at
December 31, 1997. In addition, Other Assets includes deferred tax assets of $31
and $37 at December 31, 1998 and 1997, respectively.

     An analysis of the Company's effective income tax rate follows:

<TABLE>
<CAPTION>
                                                              1998      1997      1996
                                                              ----      ----      ----
<S>                                                           <C>       <C>       <C>
Statutory U.S. federal income tax rate......................  35.0%     35.0%     35.0%
Higher effective tax rate on non-U.S. operations............   7.8      13.9      21.6
Alternative fuels credit....................................  (8.2)     (3.0)     (3.4)
Reduced tax benefit from Stock Option Provision.............   4.9        --        --
Realization of unbenefited loss from sale of subsidiary.....  (4.6)       --        --
Other -- net................................................   0.3       2.0       1.4
                                                              ----      ----      ----
Effective income tax rate...................................  35.2%     47.9%     54.6%
                                                              ====      ====      ====
</TABLE>

     Earnings before income taxes shown below are based on the location of the
corporate unit to which such earnings are attributable. However, since such
earnings are often subject to taxation in more than one country, the income tax
provision shown above as U.S. or non-U.S. does not correspond to the earnings
set forth below.

<TABLE>
<CAPTION>
                                                              1998     1997     1996
                                                              -----   ------   ------
<S>                                                           <C>     <C>      <C>
U.S.........................................................  $(173)  $  740   $  563
Non-U.S.....................................................    867    1,367    1,338
                                                              -----   ------   ------
                                                              $ 694   $2,107   $1,901
                                                              =====   ======   ======
</TABLE>

     At December 31, 1998 and 1997, respectively, unremitted earnings of
non-U.S. subsidiaries totaling $1,536 and $1,645 were deemed to be permanently
invested. No deferred tax liability has been recognized with regard to the
remittance of such earnings. It is not practicable to estimate the income tax
liability that might be incurred if such earnings were remitted to the United
States.

8. EARNINGS PER SHARE

     Basic earnings per share (EPS) is computed by dividing net income (the
numerator) by the weighted average number of common shares outstanding plus the
effects of award and fee deferrals that are invested in Conoco stock units by
certain employees and directors of the Company (the denominator). Diluted EPS is
similarly computed, except that the denominator is increased to include the
dilutive effects of outstanding stock options awarded under Conoco's
compensation plans (see Note 22).

     As described in Note 1, the Company's capital structure was established at
the time of the Offerings. In accordance with SEC Staff Accounting Bulletin No.
98, the capitalization of Class B Common Stock has been retroactively reflected
for the purposes of presenting earnings per share for periods prior to the

                                      F-16
<PAGE>   171
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

Offerings. For the period subsequent to the Offerings, basic EPS reflects the
Class B Common Stock plus the weighted average from the date of the Offerings of
Class A Common Stock and deferred award units outstanding at the date of the
Offerings. Corresponding diluted EPS for 1998 includes an additional 1,659,816
shares representing the weight average dilutive effect of outstanding stock
options that resulted from the concurrent cancellation of DuPont stock options
at the date of the Offerings and issuance of options with respect to Class A
Common Stock.

     The denominator is based on the following weighted average number of common
shares outstanding:

<TABLE>
<CAPTION>
                                                       1998          1997          1996
                                                    -----------   -----------   -----------
<S>                                                 <C>           <C>           <C>
Basic.............................................  473,826,632   436,543,573   436,543,573
Diluted...........................................  475,486,448   436,543,573   436,543,573
</TABLE>

     Variable stock options for 1,724,146 shares of common stock were
outstanding at December 31, 1998, but were not included in the computation of
diluted EPS since the threshold price of $32.88 required for these options to be
vested had not been reached.

     Common shares held as Treasury Stock are deducted in determining the number
of shares outstanding.

9. ACCOUNTS AND NOTES RECEIVABLE

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ---------------
                                                               1998     1997
                                                              ------   ------
<S>                                                           <C>      <C>
Trade.......................................................  $  805   $  916
Related parties (see Note 3)................................      80       79
Other.......................................................     306      502
                                                              ------   ------
                                                              $1,191   $1,497
                                                              ======   ======
</TABLE>

     See Note 27 for a description of operating segment markets and associated
concentrations of credit risk.

10. INVENTORIES

<TABLE>
<CAPTION>
                                                                     DECEMBER 31
                                                                  -----------------
                                                                   1998      1997
                                                                  -------   -------
    <S>                                                           <C>       <C>
    Crude oil and petroleum products............................  $   661   $   675
    Other merchandise...........................................       22        25
    Materials and supplies......................................      124       130
                                                                  -------   -------
                                                                  $   807   $   830
                                                                  =======   =======
</TABLE>

     As a result of reduced crude oil and petroleum product price levels, a
write-down to market of $97 was made in the fourth quarter of 1998, in
accordance with the Company's inventory valuation policy (see Note 2). At
December 31, 1997, the excess of market over book value of inventories valued
under the LIFO method was $152. Inventories valued at LIFO represented 82
percent and 81 percent of consolidated inventories at December 31, 1998 and
1997, respectively.

     During 1998, 1997 and 1996, certain LIFO inventory quantities were reduced
resulting in partial liquidation of the LIFO bases, with no material effect on
net income.

                                      F-17
<PAGE>   172
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

11. PROPERTY, PLANT AND EQUIPMENT

<TABLE>
<CAPTION>
                                                                          DECEMBER 31
                                                             -------------------------------------
                                                                   GROSS                NET
                                                             -----------------   -----------------
                                                              1998      1997      1998      1997
                                                             -------   -------   -------   -------
<S>                                                          <C>       <C>       <C>       <C>
Oil and Gas Properties
  Unproved.................................................  $ 1,159   $ 1,491   $   942   $ 1,230
  Proved...................................................   13,488    12,420     6,236     5,480
Other......................................................    1,280     1,316       845       871
                                                             -------   -------   -------   -------
          Total Upstream...................................   15,927    15,227     8,023     7,581
Refining...................................................    3,834     3,803     1,958     1,952
Marketing and Distribution.................................    2,255     2,199     1,375     1,295
                                                             -------   -------   -------   -------
          Total Downstream.................................    6,089     6,002     3,333     3,247
Corporate(1)...............................................       78        --        57        --
                                                             -------   -------   -------   -------
                                                             $22,094   $21,229   $11,413   $10,828
                                                             =======   =======   =======   =======
</TABLE>

- ---------------

(1) Includes aviation investment transferred from DuPont in 1998 and corporate
    software.

     Property, Plant and Equipment includes Downstream gross assets acquired
under capital leases of $41 at December 31, 1998 and 1997; related amounts
included in Accumulated Depreciation, Depletion and Amortization were $12 and
$10 at December 31, 1998 and 1997, respectively.

12. SUMMARIZED FINANCIAL INFORMATION FOR AFFILIATED COMPANIES

     Summarized consolidated financial information for affiliated companies for
which Conoco uses the equity method of accounting (see Note 2, "Basis of
Consolidation") is shown below on a 100 percent basis. The most significant of
these affiliates are Malaysia Refining Company Sdn. Bhd. (40%), Petrozuata C.A.
(50.1% -- see Note 2), CFJ Properties (50%), Pocahontas Gas Partnership (50%),
Excel Paralubes (50%), Polar Lights Company (50%), and Ceska Rafinerska a.s.
(16.33%).

     Dividends received from equity affiliates were $105 in 1998, $58 in 1997
and $85 in 1996.

<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31
                                                              ------------------------
                                                               1998     1997     1996
                                                              ------   ------   ------
<S>                                                           <C>      <C>      <C>
RESULTS OF OPERATIONS
Sales(1)....................................................  $6,744   $7,521   $6,622
Earnings before income taxes................................     358      556      305
Net income..................................................     252      345      140
Conoco's equity in earnings of affiliates (see Note 4)......      22       40      (25)
</TABLE>

- ---------------

(1) Includes sales to Conoco of $574 in 1998, $568 in 1997 and $359 in 1996.

                                      F-18
<PAGE>   173
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ----------------
                                                               1998      1997
                                                              -------   ------
<S>                                                           <C>       <C>
FINANCIAL POSITION
Current assets..............................................  $ 2,771   $2,543
Non-current assets..........................................    8,682    6,826
                                                              -------   ------
          Total assets......................................  $11,453   $9,369
                                                              -------   ------
Short-term borrowings(1)....................................  $   897   $  550
Other current liabilities...................................    1,650    1,308
Long-term borrowings(1).....................................    4,743    4,364
Other long-term liabilities.................................    1,119      645
                                                              -------   ------
          Total liabilities.................................  $ 8,409   $6,867
                                                              -------   ------
Conoco's investment in affiliates (includes advances).......  $ 1,363   $1,085
                                                              =======   ======
</TABLE>

- ---------------

(1) Conoco's pro rata interest in total borrowings was $1,828 in 1998 and $1,586
    in 1997, of which $967 in 1998 and $826 in 1997 were guaranteed by the
    Company or DuPont, on behalf of, and indemnified by, the Company. These
    amounts are included in the guarantees disclosed in Note 26.

     At December 31, 1998, Conoco's equity in undistributed earnings of its
affiliated companies was $114.

13. OTHER ASSETS

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ----------------
                                                               1998      1997
                                                              -------   ------
<S>                                                           <C>       <C>
Prepaid pension cost (see Note 23)..........................  $    50   $   71
Long-term receivables.......................................       71       74
Other securities and investments(1).........................      116      100
Deferred pension transition obligation (see Note 23)........      109      116
Other(2)....................................................      183      131
                                                              -------   ------
                                                              $   529   $  492
                                                              =======   ======
</TABLE>

- ---------------

(1) Includes $74 and $97 at December 31, 1998 and 1997, respectively,
    representing marketable securities classified as available for sale and
    reported at fair value. The remainder represents investments which are
    reported at cost.

(2) Includes intangible assets of $14 and $15 at December 31, 1998 and 1997,
    respectively.

14. ACCOUNTS PAYABLE

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ----------------
                                                               1998      1997
                                                              ------    ------
<S>                                                           <C>       <C>
Trade.......................................................  $  906    $  969
Payables to banks...........................................     124        85
Related parties (see Note 3)................................      52         4
Other.......................................................     230(1)     32
                                                              ------    ------
                                                              $1,312    $1,090
                                                              ======    ======
</TABLE>

- ---------------

(1) Includes $158 for property acquisitions.

                                      F-19
<PAGE>   174
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     Payables to banks represent checks issued on certain disbursement accounts
but not presented to the banks for payment.

15. OTHER SHORT-TERM BORROWINGS AND CAPITAL LEASE OBLIGATIONS

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ---------------
                                                               1998     1997
                                                              ------   ------
<S>                                                           <C>      <C>
Industrial development bonds................................  $   24   $   24
Bank borrowings (foreign currency)..........................      --       21
Long-term borrowings payable within one year................      26       25
Capital lease obligations...................................       2        2
                                                              ------   ------
                                                              $   52   $   72
                                                              ======   ======
</TABLE>

     The Company has uncommitted short-term bank credit lines of approximately
$122 and $42 at December 31, 1998 and 1997, respectively. These lines are
denominated in United States dollars or various foreign currencies to support
general international operating needs. No significant advances were outstanding
under these lines at these respective dates.

     The weighted average interest rate on other short-term borrowings
outstanding at December 31, 1998 and 1997, was 3.8 percent and 3.7 percent,
respectively.

16. OTHER ACCRUED LIABILITIES

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ---------------
                                                               1998     1997
                                                              ------   ------
<S>                                                           <C>      <C>
Taxes other than on income..................................  $  354   $  376
Operating expenses..........................................     293      343
Payroll and other employee-related costs....................     102      135
Restructuring costs(1)......................................      82       --
Accrued postretirement benefits cost (see Note 23)..........      18       24
Other.......................................................     313      411
                                                              ------   ------
                                                              $1,162   $1,289
                                                              ======   ======
</TABLE>

- ---------------

(1) In December 1998, Conoco announced that as a result of a comprehensive
    review of its assets and long-term strategy, Conoco was making
    organizational realignments consistent with furthering the efficiency of
    operations and taking advantage of synergies created by the upgrading of its
    asset portfolio. The announced plans are being implemented in 1999 and will
    result in a reduction of approximately 775 Upstream positions and 200
    Downstream positions worldwide. About 75 percent of the Upstream positions
    and about 50 percent of the Downstream positions affected will be in the
    United States. These reductions largely reflect the elimination of
    redundancies at all levels resulting from past and ongoing consolidation of
    assets into operations requiring less employee support, as well as better
    sharing of common services and functions across regions. Associated with
    these announcements, Conoco recorded a charge of $82 pre-tax, or $52
    after-tax, nearly all of which represents termination payments and related
    employee benefits to be made to persons affected. The restructuring charge,
    on a pre-tax basis, consisted of $31 for Upstream U.S., $36 for Upstream
    International, $8 for Downstream U.S. and $7 for International Downstream.
    At December 31, 1998, no persons left Conoco under implementation of these
    realignment plans, and no payments had been made. Conoco expects the
    restructuring efforts will be completed by year-end 1999.

                                      F-20
<PAGE>   175
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

17. OTHER LONG-TERM BORROWINGS AND CAPITAL LEASE OBLIGATIONS

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ---------------
                                                               1998     1997
                                                              ------   ------
<S>                                                           <C>      <C>
5.75% notes due 2026........................................  $   16   $   16
6.50% notes due 2008........................................       7        7
Other loans (various currencies) due 1999-2007(1)...........      29       30
Capitalization obligation to affiliate due 2008.............      11       --
Capitalization obligation to affiliate due 1999.............      --       20
Capital lease obligations...................................      30       33
                                                              ------   ------
                                                              $   93   $  106
                                                              ======   ======
</TABLE>

- ---------------

(1) Weighted average interest rates were 7.3 percent at December 31, 1998 and
    1997, respectively.

     Maturities of long-term borrowings, together with sinking fund requirements
for years ending after December 31, 1999, are $4 for each of the years 2000,
2001, 2002 and 2003.

18. OTHER LIABILITIES AND DEFERRED CREDITS

<TABLE>
<CAPTION>
                                                                DECEMBER 31
                                                              ---------------
                                                               1998     1997
                                                              ------   ------
<S>                                                           <C>      <C>
Deferred gas revenue........................................  $  371   $  379(1)
Accrued postretirement benefits cost (see Note 23)..........     331      318
Accrued pension liability (see Note 23).....................     320      230
Abandonment costs...........................................     297      310
Environmental remediation costs (see Note 26)...............     117      132
Related parties (see Note 3)................................      51       --
Other.......................................................     713      553
                                                              ------   ------
                                                              $2,200   $1,922
                                                              ======   ======
</TABLE>

- ---------------

(1) 1997 includes $303 received from a contract for future sales of natural gas
    to Centrica, a United Kingdom gas marketing company.

19. MINORITY INTERESTS

     In 1996, certain upstream subsidiaries contributed assets with an aggregate
fair value of $613 to Conoco Oil & Gas Associates L.P. (COGA) for a general
partnership interest of 67 percent. The remaining 33 percent was purchased by
Vanguard Energy Investors L.P. (Vanguard) as a limited partner. The net result
of this transaction was to increase minority interests by $297.

     Vanguard is entitled to a cumulative annual priority return on its
investment and participation in residual earnings at rates established in the
partnership agreement. The priority return rate, currently 6.52 percent, is
scheduled to be renegotiated in the second half of 1999. In the event the
parties are unable to agree on a new return rate, Vanguard has the option to
call for liquidation of the partnership, which could take place before December
31, 1999. Cash outflows arising from such liquidation should not be materially
different from the recorded amount of minority interest.

     Vanguard's share of COGA's earnings was $22 or 25 percent in 1998 and $22
or 18 percent in 1997; the net minority interest in COGA held by Vanguard was
$302 and $301 on December 31, 1998 and 1997, respectively.

                                      F-21
<PAGE>   176
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

20. STOCKHOLDERS' EQUITY

     As described in Note 1, the Company's capital structure was established at
the time of the Offerings in October 1998.

     At December 31, 1998, 4,600,000,000 shares of Class A and Class B Common
Stock were authorized and 628,041,394 shares were issued, including 249,863
Class A shares held in the treasury. A summary of activity in common shares
outstanding for the year 1998 is presented below:

<TABLE>
<CAPTION>
                                                     CLASS A       CLASS B        TOTAL
                                                   -----------   -----------   -----------
<S>                                                <C>           <C>           <C>
Issued in connection with the initial public
  offering of Class A shares and recapitalization
  of DuPont ownership (Class B shares)...........  191,456,427   436,543,573   628,000,000
Purchase of shares for treasury (to offset
  dilution from issuances under compensation
  plans).........................................     (250,000)      --           (250,000)
Issued on exercise of stock options (including
  137 from treasury).............................       41,531       --             41,531
                                                   -----------   -----------   -----------
Common Shares Outstanding -- December 31, 1998...  191,247,958   436,543,573   627,791,531
                                                   ===========   ===========   ===========
</TABLE>

     At December 31, 1998, 250,000,000 shares of Preferred Stock were
authorized, of which 1,000,000 shares were designated Series A Junior
Participating Preferred Stock and reserved for issuance on exercise of preferred
stock purchase rights under the Company's Share Purchase Rights Plan. Each
issued share of Class A and Class B Common Stock has one preferred stock
purchase Right attached to it. No preferred shares have been issued and the
Rights are not currently exercisable.

     Net proceeds received from the Offerings totaled $4,228, after deduction
for underwriting discounts and commissions payable by the Company, and were used
to reduce indebtedness owed to DuPont (see Note 3). In addition, Additional
Paid-In Capital was increased by $236 during 1998 as a result of a corresponding
non-cash charge to compensation expense associated with changes in certain
outstanding compensation awards made at the time of the Offerings (see Note 22).

     The Company declared a first quarter cash dividend on January 27, 1999, of
$.14 per share on each outstanding share of Class A Common Stock and Class B
Common Stock, payable March 12, 1999 to stockholders of record as of February
12, 1999. This initial dividend was determined on a pro rata basis covering the
period from October 27, 1998 to December 31, 1998, and is equivalent to $.19 per
share for a full quarter.

21. ACCUMULATED OTHER COMPREHENSIVE LOSS

     Balances of related after-tax components comprising Accumulated Other
Comprehensive Loss are summarized below:

<TABLE>
<CAPTION>
                                                               DECEMBER 31
                                                              -------------
                                                              1998    1997
                                                              -----   -----
<S>                                                           <C>     <C>
Foreign Currency Translation Adjustment.....................  $(185)  $(160)
Minimum Pension Liability Adjustment (see Note 23)..........    (89)    (31)
                                                              -----   -----
                                                              $(274)  $(191)
                                                              =====   =====
</TABLE>

                                      F-22
<PAGE>   177
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     Changes in related components of other comprehensive income (loss) are
reported net of associated income tax effects as summarized below:

<TABLE>
<CAPTION>
                                                                             YEAR ENDED DECEMBER 31
                                                 ------------------------------------------------------------------------------
                                                           1998                       1997                       1996
                                                 ------------------------   ------------------------   ------------------------
                                                          INCOME   AFTER-            INCOME   AFTER-            INCOME   AFTER-
                                                 PRETAX    TAX      TAX     PRETAX    TAX      TAX     PRETAX    TAX      TAX
                                                 ------   ------   ------   ------   ------   ------   ------   ------   ------
<S>                                              <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>
Foreign Currency Translation Adjustment........  $ (47)    $(22)    $(25)   $(121)    $--     $(121)    $(39)    $--      $(39)
Minimum Pension Liability Adjustment...........    (84)     (26)     (58)     (20)     (7)      (13)     (15)     (5)      (10)
                                                 -----     ----     ----    -----     ---     -----     ----     ---      ----
Other Comprehensive Income (Loss)..............  $(131)    $(48)    $(83)   $(141)    $(7)    $(134)    $(54)    $(5)     $(49)
                                                 =====     ====     ====    =====     ===     =====     ====     ===      ====
</TABLE>

22. COMPENSATION PLANS

     Until the date of the Offerings, employees of Conoco participated in
stock-based compensation plans administered through DuPont and involving options
to acquire DuPont common stock. At the time of the Offerings, Conoco employees
held a total of 10,964,917 stock options for DuPont common stock and 1,333,135
stock appreciation rights (SARs) with respect to DuPont common stock, and the
Company gave those persons the option, subject to specific country tax and legal
requirements, to participate in a program involving the cancellation of all or
part of their DuPont stock options or SARs and the issuance by the Company, upon
such cancellation, of comparable options to acquire Class A Common Stock or SARs
with respect to Class A Common Stock. The substitute stock options and other
awards have the same vesting provisions, option periods and other terms and
conditions as the DuPont options and awards they replaced. The substitute stock
options had the same ratio of the exercise price per share to the market value
per share, and the same aggregated difference between market value and exercise
price, as the DuPont stock options. A total of 8,921,508 DuPont stock options
and 745,358 DuPont SARs were cancelled with Conoco issuing 24,275,690 stock
options for Class A Common Stock and 2,279,834 SARs with respect to Class A
Common Stock with comparable terms and conditions. The program was deemed a
change in the terms of certain awards granted to Conoco employees. As a result,
the Company incurred a non-cash charge to compensation expense of $236 in the
fourth quarter of 1998, with a corresponding increase in Additional Paid-In
Capital. DuPont retained responsibility for delivery of DuPont common stock to
Conoco employees when DuPont stock options not cancelled are exercised.

AWARDS UNDER DUPONT PLANS

     Stock option awards under the DuPont Stock Performance Plan were granted to
key employees of the Company prior to the Offerings and were "fixed" and/or
"variable". The purchase price of shares subject to option is the market price
of DuPont stock at the date of grant. In January 1997, a reload feature was
added to the Stock Performance Plan to accelerate stock ownership. Generally,
fixed options granted under the DuPont Stock Performance Plan are fully
exercisable one year after date of grant and expire ten years from date of
grant. However, awards in 1998 vest over a three-year period and, except for the
last six months of the ten-year option term, are exercisable when the market
price of DuPont common stock exceeds the option grant price by 20 percent.

     During 1997, variable stock option grants were made to certain senior
management and subject to forfeiture if, within five years from the date of
grant, the market price of DuPont common stock did not achieve a price of $75
per share for 50 percent of the options and $90 per share for the remaining 50
percent. During 1998, before the Offerings, the $75 price was reached and
options with that hurdle became "fixed" and exercisable. All of the outstanding
variable DuPont options with a $90 per share hurdle price at the time of the
Offerings were cancelled and substituted with options for Conoco Class A Common
Stock with a hurdle price of $32.88 per share.

                                      F-23
<PAGE>   178
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     From time to time, the DuPont Board of Directors has approved the adoption
of a worldwide Corporate Sharing Program. Under these programs, a majority of
the Company's employees received a one-time grant to acquire shares of DuPont
common stock at the fair market value at the date of grant. Option terms are
"fixed" and generally are exercisable one year after date of grant and expire
ten years from date of grant.

AWARDS UNDER CONOCO PLANS

     The 1998 Stock and Performance Incentive Plan provides incentives to
certain corporate officers, non-employee directors and independent contractors
who can contribute materially to the success and profitability of the Company
and its subsidiaries and provides for substitution of certain existing DuPont
awards in connection with the Offerings. Awards may be in the form of cash,
stock, stock options or SARs with respect to Class A Common Stock. This plan
also provides for the Conoco Global Variable Compensation Plan, which is an
annual management incentive program for officers and certain non-officer
employees with awards made in cash and stock. Stock options and SARs granted
under the 1998 Stock and Performance Incentive Plan (except those granted to
substitute for DuPont awards) are awarded at market price on the date of grant,
have a ten year life, and generally vest one year from date of grant with
one-third becoming exercisable each of the first three years. For certain senior
management, shares otherwise receivable from the exercise of nonqualified
options with respect to Class A Common Stock granted under the 1998 Stock and
Performance Incentive Plan of Conoco to substitute for cancelled 1998 DuPont
stock options, as well as incremental new Conoco stock options granted at the
date of the Offerings, can be deferred as stock units for a designated future
delivery. The maximum number of shares of common stock and stock options granted
under the plan is limited to the higher of 20 million or 3.3 percent of
outstanding shares of Class A and Class B Common Stock. Awards made in
substitution for DuPont awards do not count against the number of shares
available under the plan. At December 31, 1998, 16,850,266 shares of Class A
Common Stock were available for issuance under the plan.

     The Company adopted the 1998 Key Employee Stock Performance Plan to attract
and retain employees by enhancing the proprietary and personal interests of
employees in the success and profitability of the Company and to grant some
awards in substitution for certain existing DuPont awards in connection with the
Offerings. Awards to employees may be in the form of Company stock options or
SARs, both with respect to Class A Common Stock. Such awards granted under this
plan (except to substitute for DuPont awards) are awarded at market price on the
date of grant, have a ten year life, and generally vest one year from date of
grant with one-third becoming exercisable each of the first three years. The
maximum number of shares of common stock and stock options granted under the
plan is limited to the higher of 18 million or three percent of outstanding
Class A and Class B Common Stock. Awards made in substitution for DuPont awards
do not count against the number of shares available under the plan. At December
31, 1998, 14,484,936 shares of Class A Common Stock were available for issuance
under the plan.

     Persons electing to substitute Conoco stock options with respect to Class A
Common Stock for DuPont stock options and persons receiving incremental new
Conoco stock options with respect to Class A Common Stock at the date of the
Offerings under the 1998 Stock and Performance Incentive Plan and the 1998 Key
Employee Stock Performance Plan are eligible for reload options upon the
exercise of stock options, with the condition that shares received from the
exercise of the original option may not be sold for at least two years. Reloads
are granted at the market price on the reload grant date and have a term equal
to the remaining term of the original option. The number of new options granted
under a reload option is equal to the number of shares required to satisfy the
total exercise price of the original option.

                                      F-24
<PAGE>   179
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     The 1998 Global Performance Sharing Plan is a broad-based plan under which
grants of stock options and SARs with respect to Class A Common Stock were made
to certain non-officer employees on the date of the Offerings to encourage a
sense of proprietorship and an active interest in the financial success of
Conoco and its subsidiaries. The stock options and SARs were awarded at the
price of the Offerings ($23 per share), have a ten year life, and become
exercisable in one-third increments on the first, second and third anniversaries
of the grant date. There are no additional shares available for issuance under
this plan.

     All stock options granted under Conoco plans are "fixed" and have no
intrinsic value at grant date except for those granted to substitute for
cancelled DuPont options. Accordingly, except for the fourth quarter 1998 charge
related to the one-time offer to cancel DuPont options and substitute Conoco
options, no compensation expense has been recognized for fixed options.

     The following table summarizes activity for fixed and variable options for
the last three years:

<TABLE>
<CAPTION>
                                                                FIXED                  VARIABLE
                                                        ----------------------   ---------------------
                                                          NUMBER     WEIGHTED-    NUMBER     WEIGHTED-
                                                            OF        AVERAGE       OF        AVERAGE
                                                          SHARES       PRICE      SHARES       PRICE
                                                        ----------   ---------   ---------   ---------
<S>                                                     <C>          <C>         <C>         <C>
DUPONT OPTIONS
January 1, 1996.......................................   7,811,547    $24.27        --            --
  Granted.............................................   1,140,780     39.20        --            --
  Exercised...........................................  (1,781,277)    23.33        --            --
  Forfeited...........................................     (95,330)    26.38        --            --
                                                        ----------    ------     ---------    ------
December 31, 1996.....................................   7,075,720    $26.88        --            --
  Granted.............................................   2,761,416     52.90     1,259,600    $52.50
  Exercised...........................................    (730,383)    23.97        --            --
  Forfeited...........................................    (116,325)    50.44        --            --
                                                        ----------    ------     ---------    ------
December 31, 1997.....................................   8,990,428    $35.14     1,259,600    $52.50
  Granted.............................................   1,241,055     59.53        --            --
  Reclassified........................................     629,800     52.50      (629,800)    52.50
  Exercised...........................................    (460,314)    24.64        --            --
  Forfeited...........................................     (65,852)    50.68        --            --
                                                        ----------    ------     ---------    ------
October 21, 1998 (Offerings date).....................  10,335,117    $39.50       629,800    $52.50
  Cancelled for Conoco options........................  (8,291,708)               (629,800)
                                                        ----------               ---------
  Retained by DuPont..................................   2,043,409                  --
CONOCO OPTIONS
Granted at Offerings date:
  For cancelled DuPont options........................  22,551,544    $14.62     1,724,146    $19.18
  New awards..........................................   9,721,750     23.00        --            --
Exercised.............................................     (41,531)    14.18        --            --
Forfeited.............................................     (53,840)    23.00        --            --
                                                        ----------    ------     ---------    ------
December 31, 1998.....................................  32,177,923    $17.14     1,724,146    $19.18
</TABLE>

                                      F-25
<PAGE>   180
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     The following table summarizes information concerning outstanding and
exercisable fixed Conoco options at December 31, 1998. For total variable
options outstanding at December 31, 1998, the weighted-average remaining
contractual life was 3.1 years.

<TABLE>
<CAPTION>
                                                                    EXERCISE PRICE
                                                  --------------------------------------------------
                                                    $5.89-       $8.90-      $14.47-       $21.73-
                                                    $8.41        $12.80       $21.64       $29.58
                                                  ----------   ----------   ----------   -----------
<S>                                               <C>          <C>          <C>          <C>
Options outstanding.............................   2,766,632    7,335,094    9,281,970    12,794,227
Weighted-average remaining contractual life
  (years).......................................         2.9          5.5          7.8           9.6
Weighted-average price..........................  $     7.60   $    10.02   $    17.94   $     22.70
Options exercisable.............................   2,766,632    7,335,094    9,281,970        42,204
Weighted-average price..........................  $     7.60   $    10.02   $    17.94   $     24.22
</TABLE>

     Fixed options exercisable at the end of the last three years and the
weighted-average fair value of fixed options granted are as follows:

<TABLE>
<CAPTION>
                                                    CONOCO                 DUPONT OPTIONS
                                                    OPTIONS     ------------------------------------
                                                     1998         1998*         1997         1996
                                                  -----------   ----------   ----------   ----------
<S>                                               <C>           <C>          <C>          <C>
Options exercisable at year-end:
  Number of shares..............................   19,425,900    9,113,046    6,229,012    5,934,940
  Weighted-average price........................  $     13.49   $    36.81   $    27.26   $    24.51
Weighted-average fair value of options granted
  during the year:
  New options...................................  $      4.15   $    13.85   $    12.84   $     9.01
  Options substituted for DuPont options........  $      9.22
</TABLE>

- ---------------

* As of the date of the Offerings rather than year-end.

     The fair value of Conoco variable options with a hurdle price of $32.88 per
share granted as substitutes for DuPont variable options was assumed to be zero.

     The fair value of options is calculated using the Black-Scholes option
pricing model. Assumptions used were as follows:

<TABLE>
<CAPTION>
                                                       CONOCO OPTIONS              DUPONT OPTIONS
                                                     ------------------   --------------------------------
                                                               1998                     1997
                                                               FIXED      1998    ----------------   1996
                                                     NEW    SUBSTITUTES   FIXED   FIXED   VARIABLE   FIXED
                                                     ----   -----------   -----   -----   --------   -----
<S>                                                  <C>    <C>           <C>     <C>     <C>        <C>
Dividend yield.....................................   3.3%      3.3%       2.1%    2.2%      2.2%     2.6%
Volatility.........................................  20.0%*    20.0%*     19.9%   18.6%     18.6%    21.0%
Risk-free interest rate............................   4.6%      4.4%       5.5%    6.4%      6.4%     5.4%
Expected life (years)..............................   5.8*      3.9*       5.8     5.6       5.7      6.0
</TABLE>

- ---------------

* Due to insufficient history, DuPont experience trends have been used to
  estimate the volatility of Conoco stock and the expected life for exercise of
  Conoco stock options.

                                      F-26
<PAGE>   181
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     The following table sets forth pro forma information as if the Company had
adopted the optional recognition provisions of SFAS No. 123:

<TABLE>
<CAPTION>
                                                              1998   1997    1996
                                                              ----   -----   -----
<S>                                                           <C>    <C>     <C>
Increase (Decrease) in:
Net income..................................................  $157   $ (28)  $  (6)
Earnings per share
  Basic.....................................................  $.33   $(.06)  $(.01)
  Diluted...................................................  $.33   $(.06)  $(.01)
</TABLE>

     Total fair value underpinning the pro forma disclosure for 1998 presented
above includes the fair value of new DuPont grants and a pro rata portion of new
Conoco grants made at the Offerings date, plus incremental fair value of the
Conoco stock options that were substituted for DuPont stock options granted
after the adoption of SFAS No. 123. The incremental fair value for cancellation
and substitution of stock options originally granted before adoption of SFAS No.
123 is zero because intrinsic value exceeds fair value.

     Compensation expense recognized in income for stock-based employee
compensation awards was $229, $26 and $13 for 1998, 1997 and 1996, respectively,
with 1998 including a one-time charge of $236 for the cancellation of DuPont
stock options described above.

     Prior to the Offerings, the Conoco Unit Option Plan awarded SARs with
respect to DuPont common stock to key salaried employees in certain grade levels
who showed early evidence of ability to assume significant responsibility and
leadership. At the time of the Offerings, 1,131,494 unit options were
outstanding of which 593,722 were cancelled and substituted with comparable SARs
with respect to Conoco Class A Common Stock under the 1998 Key Employee Stock
Performance Plan of Conoco. Effective with the Offerings, no new grants were
made or are planned out of the Conoco Unit Option Plan. At December 31, 1998,
outstanding unit options based on Conoco Class A Common Stock were 1,605,614. At
December 31, 1998 and 1997, outstanding unit options based on DuPont common
stock were 545,724 and 908,532, respectively. At these same dates, related
liability provisions totaled $22 and $27, respectively.

     Through the date of the Offerings, certain Conoco employees who
participated in the DuPont Variable Compensation Plan received grants of stock
and cash. Overall amounts were dependent on financial performance of DuPont and
Conoco and other factors, and were subject to maximum limits as defined by the
plan. Amounts charged against earnings in anticipation of awards to be made
later were $39 in 1998, $38 in 1997 and $38 in 1996. Awards made for plan years
1998, 1997 and 1996 were $24, $45 and $38, respectively, with awards distributed
in 1999 for the 1998 plan year made out of the 1998 Stock and Performance
Incentive Plan of Conoco based on performance standards set previously in the
DuPont Variable Compensation Plan. Both the DuPont Variable Compensation Plan
and the 1998 Stock and Performance Incentive Plan of Conoco allow future
delivery of stock awards. Employees were offered the opportunity to cancel
DuPont shares granted under previous awards and receive substitute shares of
Conoco Class A Common Stock for designated future delivery under the 1998 Stock
and Performance Incentive Plan of Conoco. At December 31, 1998, 72,345 shares of
DuPont stock and 199,268 shares of Conoco Class A Common Stock are awaiting
delivery. A liability of $4 has been recognized for delivery of DuPont shares.

     Awards under the separate Conoco Challenge Program may be granted in cash
to employees not covered by the Variable Compensation Plan. This plan provides
awards based on meeting financial goals and upholding Conoco's core values.
Overall amounts are dependent on Company earnings and cash

                                      F-27
<PAGE>   182
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

provided by operations and are subject to maximum limits as defined by the plan.
Amounts charged against earnings in anticipation of awards to be made later were
$22 in 1998, $49 in 1997 and $47 in 1996. Awards made for plan years 1998, 1997
and 1996 were $19, $47 and $47, respectively.

23. PENSIONS AND OTHER POSTRETIREMENT BENEFITS

     The Company participates in the DuPont U.S. defined benefit pension plan,
which covers substantially all U.S. employees and has separate defined benefit
pension plans covering certain U.S. and non-U.S. employees. The benefits for
these plans are based primarily on years of service and employees' pay near
retirement. The Company's funding policy is consistent with the funding
requirements of federal laws and regulations.

     With respect to the DuPont U.S. defined benefit pension plan, the Company
and DuPont agreed upon an amount of approximately $820 at the date of the
Offerings that will eventually be transferred to a separate trust for the
Company's pension plan. Ninety percent of this amount, adjusted for benefit
payments and investment return from the date of the Offerings, will be
transferred to the Company within six months following the date on which DuPont
owns neither 80 percent of the voting power nor 80 percent of the economic value
of the Common Stock, assuming certain conditions are satisfied. The remainder
will be transferred within a further 90-day period. The adjusted value subject
to transfer was approximately $878 at December 31, 1998. DuPont allocated the
pension obligations based on the Company's individual employees covered and
allocated the unrecognized prior service cost and unrecognized net gain in
proportion to the Company's projected benefit obligation to the total projected
benefit obligation of the DuPont plan. The projected benefit obligation
approximates $871 and $723 at December 31, 1998 and 1997, respectively, and the
prepaid pension asset recognized in the Consolidated Balance Sheet (see Note 13)
is $50 and $71 at December 31, 1998 and 1997, respectively. The net periodic
pension cost components included in the table below are also based on the
foregoing allocation factors.

     Pension coverage for employees of the Company's non-U.S. subsidiaries is
provided, to the extent deemed appropriate, through separate plans. Obligations
under such plans are systematically provided for by depositing funds with
trustees, under insurance policies or by book reserves.

     Conoco and certain subsidiaries also provide medical and life insurance
benefits to retirees and survivors. The associated plans, principally health,
are unfunded, and approved claims are paid from Company funds. Under the terms
of these plans, the Company reserves the right to change, modify or discontinue
the plans. Conoco has communicated to plan participants that any increase in the
annual health care escalation rate above 4.5 percent will be borne by the
participants and, therefore, result in no increase to the accumulated
postretirement benefit obligation or the other postretirement benefits cost.

<TABLE>
<CAPTION>
                                                                                          OTHER
                                                            PENSION BENEFITS     POSTRETIREMENT BENEFITS
                                                           -------------------   ------------------------
                                                           1998    1997   1996    1998     1997     1996
                                                           -----   ----   ----   ------   ------   ------
<S>                                                        <C>     <C>    <C>    <C>      <C>      <C>
NET PERIODIC BENEFIT COST
Service cost.............................................  $  65   $ 60   $ 55     $ 7      $ 6      $ 7
Interest cost............................................     94     88     76      21       18       16
Expected return on plan assets...........................   (105)   (98)   (91)     --       --       --
Amortization of prior service cost (credit)..............      9      2      2      (4)      (4)      (4)
Recognized actuarial loss (gain).........................     (4)     1     (5)     --       (1)      (1)
                                                           -----   ----   ----     ---      ---      ---
Net periodic benefit cost................................  $  59   $ 53   $ 37     $24      $19      $18
                                                           =====   ====   ====     ===      ===      ===
</TABLE>

                                      F-28
<PAGE>   183
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

     Information concerning benefit obligations, plan assets, funded status and
recorded values for these plans (excluding the DuPont U.S. defined benefit plan)
follows:

<TABLE>
<CAPTION>
                                                                                       OTHER
                                                                                  POSTRETIREMENT
                                                              PENSION BENEFITS       BENEFITS
                                                              -----------------   ---------------
                                                               1998      1997      1998     1997
                                                              -------   -------   ------   ------
<S>                                                           <C>       <C>       <C>      <C>
CHANGE IN BENEFIT OBLIGATION
Benefit obligation at beginning of year.....................   $ 682     $ 533    $ 301    $ 242
Service cost................................................      33        28        7        6
Interest cost...............................................      44        39       21       18
Amendments..................................................      (4)       --       --       --
Participant contributions...................................      --        --        3        3
Actuarial (gain) loss.......................................     160       113       43       58
Divestitures and other......................................     (17)       (2)      --       --
Benefits paid...............................................     (32)      (29)     (25)     (26)
                                                               -----     -----    -----    -----
Benefit obligation at end of year...........................   $ 866     $ 682    $ 350    $ 301
                                                               =====     =====    =====    =====
CHANGE IN PLAN ASSETS
Fair Value of plan assets at beginning of year..............   $ 386     $ 323    $  --    $  --
Actual return on plan assets................................      61        48       --       --
Employer contribution.......................................      26        28       22       23
Participant contributions...................................      --        --        3        3
Divestitures and other......................................     (14)       --       --       --
Benefits paid...............................................     (21)      (13)     (25)     (26)
                                                               -----     -----    -----    -----
Fair Value of plan assets at end of year....................   $ 438     $ 386    $  --    $  --
                                                               =====     =====    =====    =====
Funded status of plans at end of year.......................   $(428)    $(296)   $(350)   $(301)
Unrecognized actuarial loss.................................     240       109       53       14
Unrecognized prior service cost (credit)....................     109       121      (52)     (55)
                                                               -----     -----    -----    -----
Net amount recognized at end of year........................   $ (79)    $ (66)   $(349)   $(342)
                                                               =====     =====    =====    =====
AMOUNTS RECOGNIZED IN CONSOLIDATED BALANCE SHEET AT END OF
  YEAR
Accrued benefit liability:
  Short-term (see Note 16)..................................   $  --     $  --    $ (18)   $ (24)
  Long-term (see Note 18)...................................    (320)     (230)    (331)    (318)
Deferred pension cost (see Note 13).........................     109       116       --       --
Accumulated other comprehensive loss(1).....................     132        48       --       --
                                                               -----     -----    -----    -----
  Net amount recognized.....................................   $ (79)    $ (66)   $(349)   $(342)
                                                               =====     =====    =====    =====
</TABLE>

- ---------------

(1) Before reduction for associated deferred tax savings of $43 and $17 at
    December 31, 1998 and 1997, respectively (see Note 21).

                                      F-29
<PAGE>   184
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

<TABLE>
<S>                                                           <C>     <C>     <C>     <C>
WEIGHTED-AVERAGE ASSUMPTIONS AT END OF YEAR
Discount rate(1)............................................   6.50%   7.00%   6.50%   7.00%
Rate of compensation increase(1)............................   5.15%   5.15%   5.15%   5.15%
Expected return on plan assets(1)...........................   9.00%   9.00%     --      --
Health care escalation rate.................................     --      --    4.50%   4.50%
</TABLE>

- ---------------

(1) Represents rates for U.S. plans; similar economic assumptions were used for
    non-U.S. plans, with the exception of the United Kingdom where discount
    rates of 6 percent and 7.25 percent were used at year end 1998 and 1997,
    respectively.

     At December 31, 1998, U.S. defined benefit plan assets consisted
principally of common stocks, including 471,667 shares of DuPont.

24. INVESTING ACTIVITIES

     Purchases of property, plant and equipment in 1997 include $929 for
Upstream natural gas properties in South Texas (see Supplementary Petroleum
Data).

     Non-cash additions to property, plant and equipment totaled $162 and $127
for the years 1998 and 1997, respectively.

     Proceeds from sales of assets in 1998 include $245 from the sale of certain
Upstream properties in the U.S. and North Sea, $156 for various U.S. Downstream
assets, and $54 from sale of a Downstream office building in Europe. Proceeds in
1997 include $272 from the sale of certain Upstream North Sea properties.

25. FINANCIAL INSTRUMENTS AND OTHER RISK MANAGEMENT ACTIVITIES

     Conoco operates in the worldwide crude oil, refined product, natural gas,
natural gas liquids and electric power markets and is exposed to fluctuations in
hydrocarbon prices, foreign currency rates and interest rates that can affect
the revenues and cost of operating, investing and financing. Conoco's management
has used and intends to use financial and commodity-based derivative contracts
to reduce the risk in overall earnings and cash flow when the benefits provided
are anticipated to more than offset the risk management costs involved.

     The Company has established a Financial Risk Management Policy Framework
that provides guidelines for entering into contractual arrangements
(derivatives) to manage the Company's commodity price, foreign currency rate and
interest rate risks. The Conoco Risk Management Committee has ongoing
responsibility for the content of this policy and has principal oversight
responsibility to ensure the Company is in compliance with the policy and that
procedures and controls are in place for the use of commodity, foreign currency
and interest rate instruments. These procedures clearly establish derivative
control and valuation processes, routine monitoring and reporting requirements,
and counterparty credit approval procedures. Additionally, the Company's
internal audit group conducts reviews of these risk management activities to
assess the adequacy of internal controls. The audit results are reviewed by the
Conoco Risk Management Committee and by management.

     The counterparties to these contractual arrangements are limited to major
financial institutions and other established companies in the petroleum
industry. Although the Company is exposed to credit loss in the event of
nonperformance by these counterparties, this exposure is managed through credit
approvals, limits and monitoring procedures and limits to the period over which
unpaid balances are allowed to

                                      F-30
<PAGE>   185
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

accumulate. The Company has not experienced nonperformance by counterparties to
these contracts, and no material loss would be expected from any such
nonperformance.

COMMODITY PRICE RISK

     The Company enters into energy-related futures, forwards, swaps and options
in various markets to balance its physical systems, to meet customer needs and
to manage its price exposure on anticipated crude oil, natural gas, refined
product and electric power transactions.

     These instruments provide a natural extension of the underlying cash market
and are used to physically acquire a portion of supply requirements as well as
to manage pricing of near-term physical requirements. The commodity futures
market has underlying principles of increased liquidity and longer trading
periods than the cash market and is one method of managing price risk in the
energy business.

     Conoco's policy is to generally be exposed to market pricing for commodity
purchases and sales. From time to time, management may use derivatives to
establish longer-term positions to hedge the price risk for the Company's equity
crude oil and natural gas production as well as refinery margins.

     Under the Company's policy, hedging includes only those transactions that
offset physical positions and reduce overall Company exposure to price risk.
Trading is defined as any transaction that does not meet the definition of
hedging. After-tax gain/loss from risk trading has not been material.

FOREIGN CURRENCY RISK

     Conoco has foreign currency exchange rate risk resulting from operations in
over 40 countries around the world. The Company does not comprehensively hedge
its exposure to currency rate changes, although it may choose to selectively
hedge exposures to foreign currency rate risk. Examples include firm commitments
for capital projects, certain local currency tax payments, and cash returns from
net investments in foreign affiliates to be remitted within the coming year.

     At December 31, 1998, the Company had no open forward exchange contracts.
At December 31, 1997, the Company had open forward exchange contracts designated
as a hedge of firm foreign currency commitments. The notional amount of these
contracts was $50 and the estimated fair value was $38.

INTEREST RATE RISK

     Prior to the Offerings, the Company had no significant interest rate risk
to manage. Subsequent to the Offerings, however, the Company intends to manage
any material risk arising from exposure to interest rates by using a combination
of financial derivative instruments as part of a program to manage the fixed and
floating interest rate mix of the total debt portfolio and related overall cost
of borrowing.

FAIR VALUES OF FINANCIAL INSTRUMENTS

     The carrying values of most financial instruments are based on historical
costs. The carrying values of marketable securities, receivables, payables and
short-term obligations approximate their fair value because of their short
maturity. Long-term receivables from and long-term borrowings due to related
parties approximate fair value because associated interest rates are market
based. At December 31, 1998, however, long-term borrowings due related parties
included $4,589 at a fixed rate with fair value estimated at $4,624. Excluding
amounts due related parties, the estimated fair value of other long-term
borrowings outstanding at December 31, 1998 and 1997 of $93 and $106,
respectively, was $96 and $108, respectively. These estimates were based on
quoted market prices for the same or similar issues, or the current rates
offered to the Company for issues with the same remaining maturities.

                                      F-31
<PAGE>   186
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

SUMMARY OF OUTSTANDING DERIVATIVE FINANCIAL INSTRUMENTS

     Set forth below is a summary of the fair values, carrying amounts and
notional values of outstanding commodity financial instruments at December 31,
1998 and 1997.

     Notional amounts represent the face amount of the contractual arrangements
and are not a measure of market or credit exposure. The fair value of swaps and
other over-the-counter instruments are estimated based on quoted market prices
of comparable contracts and approximate the gain or (loss) that would have been
realized if the contracts had been closed out at the balance sheet date.
Carrying amounts represent the receivable (payable) recorded in the Consolidated
Balance Sheet.

<TABLE>
<CAPTION>
                                                              FAIR    CARRYING   NOTIONAL
                   COMMODITY DERIVATIVES                      VALUE    AMOUNT     VALUE
                   ---------------------                      -----   --------   --------
<S>                                                           <C>     <C>        <C>
December 31, 1998:
  Hedging...................................................  $(10)     $(6)      $  422
  Trading...................................................     2       --          330
December 31, 1997:
  Hedging...................................................  $ 10      $12       $1,037
  Trading...................................................    (2)      (1)       1,089
</TABLE>

     Estimated fair values for hedging instruments only represent the value of
the hedge component of the transactions and, thus, are not indicative of the
fair value of the Company's overall hedged position.

26. COMMITMENTS AND CONTINGENT LIABILITIES

     The Company uses various leased facilities and equipment in its operations.
Future minimum lease payments under noncancelable operating leases are $246,
$226, $216, $199 and $194 for the years 1999, 2000, 2001, 2002 and 2003,
respectively, and $580 for subsequent years, and are not reduced by
noncancelable minimum sublease rentals due in the future in the amount of $69.
Rental expense under operating leases was $198 in 1998, $132 in 1997 and $118 in
1996.

     The Company has various purchase commitments for materials, supplies,
services and items of permanent investment incident to the ordinary conduct of
business. In the aggregate, such commitments are not at prices in excess of
current market. In addition, at December 31, 1998, the Company has obligations
under international contracts to purchase, over periods up to 20 years, natural
gas at prices that were in excess of year-end 1998 market prices. No material
annual loss is expected from these long-term commitments.

     The Company is subject to various lawsuits and claims involving a variety
of matters including, along with other oil companies, actions challenging oil
and gas royalty payments, severance tax payments and other payments, including
claims based on posted prices, and claims for damages resulting from leaking
underground storage tanks. As a result of the Separation Agreement with DuPont,
the Company has assumed responsibility for current and future claims related to
certain discontinued chemicals and agricultural chemicals businesses operated by
Conoco in the past. In general, the effect on future financial results is not
subject to reasonable estimation because considerable uncertainty exists. The
Company believes the ultimate liabilities resulting from such lawsuits and
claims may be material to results of operations in the period in which they are
recognized but will not materially affect the consolidated financial position of
the Company.

     The Company is also subject to contingencies under environmental laws and
regulations that in the future may require the Company to take further action to
correct the effects on the environment of prior

                                      F-32
<PAGE>   187
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

disposal practices or releases of petroleum substances by the Company or other
parties. The Company has accrued for certain environmental remediation
activities consistent with the policy set forth in Note 2. The Company has
assumed environmental remediation liabilities from DuPont related to certain
discontinued chemicals and agricultural chemicals businesses operated by Conoco
in the past that are included in the environmental accrual. At December 31, 1998
and 1997, such accrual amounted to $129 and $144, respectively, and, in
management's opinion, was appropriate based on existing facts and circumstances.
Under adverse changes in circumstances, potential liability may exceed amounts
accrued. Although future remediation expenditures in excess of current reserves
are possible, the effect of any such excess on future financial results is not
subject to reasonable estimation because of the considerable uncertainty
regarding the cost and timing of expenditures. In the event future monitoring
and remediation expenditures are in excess of amounts accrued, they may be
significant to results of operations in the period recognized but management
does not anticipate they will have a material adverse effect on the consolidated
financial position of the Company.

     The Company has indirectly guaranteed various debt obligations under
agreements with certain affiliated and other companies to provide specified
minimum revenues from shipments or purchases of products. These indirect
guarantees totaled $18 and $19 at December 31, 1998 and 1997, respectively. The
Company, as of August 1, 1998, terminated a multiparty account banking agreement
that provided for the indirect guarantee of bank account overdrafts of certain
European DuPont subsidiaries. The Company now has a new multiparty banking
agreement that provides for the indirect guarantee of bank account overdrafts
for itself and its subsidiaries. Management believes the exposure under this
agreement is not material. In addition, the Company or DuPont, on behalf of and
indemnified by, the Company, had directly guaranteed obligations of certain
affiliated companies and others. These guarantees totaled $1,353 and $1,131 at
December 31, 1998 and 1997, respectively. The increase in 1998 is primarily
related to additional financing associated with the construction of drillships
and cogeneration facilities in South Texas. The balance at December 31, 1998,
includes a drillship construction guarantee of $260 that was eliminated through
successful completion in early 1999. No material loss is anticipated by reason
of such agreements and guarantees.

     The Company's operations, particularly oil and gas exploration and
production, can be affected by changing economic, regulatory and political
environments in the various countries, including the United States, in which it
operates. In certain locations, host governments have imposed restrictions,
controls and taxes, and in others, political conditions have existed that may
threaten the safety of employees and the Company's continued presence in those
countries. Internal unrest or strained relations between a host government and
the Company or other governments may affect the Company's operations. Those
developments have, at times, significantly affected the Company's operations and
related results and are carefully considered by management when evaluating the
level of current and future activity in such countries.

     Areas in which the Company has significant operations include the United
States, the United Kingdom, Norway, Germany, Venezuela, the United Arab
Emirates, Indonesia, Russia, Canada, the Czech Republic, Malaysia and Nigeria.

                                      F-33
<PAGE>   188
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

27. OPERATING SEGMENT AND GEOGRAPHIC INFORMATION

     Conoco is involved in both the Upstream and Downstream operating segments
of the petroleum business that comprise the structure used by senior management
to make key operating decisions and assess performance. Activities of the
Upstream operating segment include exploring for, and developing, producing and
selling, crude oil, natural gas and natural gas liquids. Activities of the
Downstream operating segment include refining crude oil and other feedstocks
into petroleum products, buying and selling crude oil and refined products and
transporting, distributing and marketing petroleum products. The Company has
four reporting segments for its Upstream and Downstream operating segments,
reflecting geographic division between the United States and International.
Corporate and Other includes general corporate expenses, financing costs and
other non-operating items, and results for electric power and related-party
insurance operations. The Company sells its products worldwide; however, in
1998, about 57 percent and 39 percent of sales were made in the United States
and Europe, respectively. Major products include crude oil, natural gas and
refined products that are sold primarily in the energy and transportation
markets. The Company's sales are not materially dependent on a single customer
or small group of customers. Transfers between segments are on the basis of
estimated market values.

<TABLE>
<CAPTION>
                                                           UPSTREAM                 DOWNSTREAM
                                                    -----------------------   -----------------------   CORPORATE
                                                    UNITED                    UNITED                       AND
SEGMENT INFORMATION                                 STATES    INTERNATIONAL   STATES    INTERNATIONAL     OTHER     CONSOLIDATED
- -------------------                                 ------    -------------   -------   -------------   ---------   ------------
<S>                                                 <C>       <C>             <C>       <C>             <C>         <C>
1998
Sales and Other Operating Revenues(2)
  Refined Products................................  $   --       $   --       $ 6,082      $7,647        $   --       $13,729
  Crude Oil.......................................      14          774         2,650         299            --         3,737
  Natural Gas.....................................   2,416          723            --          --            --         3,139
  Other...........................................     770          104           217         351           749         2,191
                                                    ------       ------       -------      ------        ------       -------
        Total.....................................   3,200        1,601         8,949       8,297           749        22,796
Transfers Between Segments........................     308          378            89         181            --            --
                                                    ------       ------       -------      ------        ------       -------
        Total Operating Revenues..................  $3,508       $1,979       $ 9,038      $8,478        $  749       $22,796
                                                    ======       ======       =======      ======        ======       =======
Operating Profit..................................  $  223       $  482       $   149      $  256        $ (379)      $   731
Equity in Earnings of Affiliates..................       1          (14)           56         (20)           (1)           22
Corporate Non-Operating Items:
  Interest and Debt Expense.......................                                                         (199)         (199)
  Interest Income (net of misc. interest
    expense)......................................                                                           89            89
  Other...........................................                                                           51            51
Provision for Income Taxes........................      (5)        (185)          (70)        (80)           96          (244)
                                                    ------       ------       -------      ------        ------       -------
Net Income (Loss)(1)..............................  $  219       $  283       $   135      $  156        $ (343)      $   450
                                                    ======       ======       =======      ======        ======       =======
Capital Employed at December 31:
  Excluding Investment in Affiliates..............  $2,349       $2,849       $ 1,245      $  989        $  384       $ 7,816
  Investment in Affiliates........................     191          371           248         531            22         1,363
                                                    ------       ------       -------      ------        ------       -------
        Total(3)..................................  $2,540       $3,220       $ 1,493      $1,520        $  406       $ 9,179
                                                    ======       ======       =======      ======        ======       =======
Depreciation, Depletion and Amortization..........  $  383       $  457       $   139      $  133        $    1       $ 1,113
Dry Hole Costs and Impairment of Unproved
  Properties......................................  $   59       $  104                                               $   163
Other Significant Non-Cash Items:
  Stock Option Provision..........................                                                       $  236       $   236
  Inventory Write-down to Market..................  $    6                    $    63      $   28                     $    97
Capital Expenditures and Investments(4)...........  $  788       $1,177       $   201      $  332        $   18       $ 2,516
</TABLE>

                                      F-34
<PAGE>   189
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

<TABLE>
<CAPTION>
                                                           UPSTREAM                 DOWNSTREAM
                                                    -----------------------   -----------------------   CORPORATE
                                                    UNITED                    UNITED                       AND
SEGMENT INFORMATION                                 STATES    INTERNATIONAL   STATES    INTERNATIONAL     OTHER     CONSOLIDATED
- -------------------                                 ------    -------------   -------   -------------   ---------   ------------
<S>                                                 <C>       <C>             <C>       <C>             <C>         <C>
1997
Sales and Other Operating Revenues(2)
  Refined Products................................  $   --       $   --       $ 7,664      $8,165        $   --       $15,829
  Crude Oil.......................................      24        1,191         3,483         181            --         4,879
  Natural Gas.....................................   2,415          556            --          --            --         2,971
  Other...........................................     909          159           247         293           509         2,117
                                                    ------       ------       -------      ------        ------       -------
        Total.....................................   3,348        1,906        11,394       8,639           509        25,796
Transfers Between Segments........................     599          622           115         191            --            --
                                                    ------       ------       -------      ------        ------       -------
        Total Operating Revenues..................  $3,947       $2,528       $11,509      $8,830        $  509       $25,796
                                                    ======       ======       =======      ======        ======       =======
Operating Profit..................................  $  489       $1,174       $   287      $  185        $ (132)      $ 2,003
Equity in Earnings of Affiliates..................      18           (7)           30          (1)                         40
Corporate Non-Operating Items:
  Interest and Debt Expense.......................                                                          (36)          (36)
  Interest Income (net of misc. interest
    expense)......................................                                                           77            77
  Other...........................................                                                           23            23
Provision for Income Taxes........................     (62)        (728)         (101)        (93)          (26)       (1,010)
                                                    ------       ------       -------      ------        ------       -------
Net Income (Loss)(1)..............................  $  445       $  439       $   216      $   91        $  (94)      $ 1,097
                                                    ======       ======       =======      ======        ======       =======
Capital Employed at December 31:
  Excluding Investment in Affiliates..............  $2,390       $2,299       $ 1,421      $1,130        $  903       $ 8,143
  Investment in Affiliates........................     155          256           226         425            23         1,085
                                                    ------       ------       -------      ------        ------       -------
        Total(3)..................................  $2,545       $2,555       $ 1,647      $1,555        $  926       $ 9,228
                                                    ======       ======       =======      ======        ======       =======
Depreciation, Depletion and Amortization..........  $  268       $  578       $   145      $  188                     $ 1,179
Dry Hole Costs and Impairment of Unproved
  Properties......................................  $   63       $  106                                               $   169
Capital Expenditures and Investments(4)...........  $1,534       $  999       $   227      $  331        $   23       $3,114 \
</TABLE>

                                      F-35
<PAGE>   190
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

<TABLE>
<CAPTION>
                                                           UPSTREAM                 DOWNSTREAM
                                                    -----------------------   -----------------------   CORPORATE
                                                    UNITED                    UNITED                       AND
SEGMENT INFORMATION                                 STATES    INTERNATIONAL   STATES    INTERNATIONAL     OTHER     CONSOLIDATED
- -------------------                                 ------    -------------   -------   -------------   ---------   ------------
<S>                                                 <C>       <C>             <C>       <C>             <C>         <C>
1996
Sales and Other Operating Revenues(2)
  Refined Products................................  $   --       $   --       $ 7,355      $8,598        $   --       $15,953
  Crude Oil.......................................      29        1,359         2,897           1            --         4,286
  Natural Gas.....................................   1,907          471            --          --            --         2,378
  Other...........................................     847          113           293         281            79         1,613
                                                    ------       ------       -------      ------        ------       -------
        Total.....................................   2,783        1,943        10,545       8,880            79        24,230
Transfers Between Segments........................     587          572           125         151            --            --
                                                    ------       ------       -------      ------        ------       -------
        Total Operating Revenues..................  $3,370       $2,515       $10,670      $9,031        $   79       $24,230
                                                    ======       ======       =======      ======        ======       =======
Operating Profit..................................  $  328       $1,231       $   244      $  202        $ (118)      $ 1,887
Equity in Earnings of Affiliates..................      11          (41)            8          (3)                        (25)
Corporate Non-Operating Items:
  Interest and Debt Expense.......................                                                          (74)          (74)
  Interest Income (net of misc. interest
    expense)......................................                                                          124           124
  Other...........................................                                                          (11)          (11)
Provision for Income Taxes........................     (25)        (823)          (80)        (82)          (28)       (1,038)
                                                    ------       ------       -------      ------        ------       -------
Net Income (Loss)(1)..............................  $  314       $  367       $   172      $  117        $ (107)      $   863
                                                    ======       ======       =======      ======        ======       =======
Capital Employed at December 31:
  Excluding Investment in Affiliates..............  $1,371       $3,042       $ 1,538      $1,195        $  995       $ 8,141
  Investment in Affiliates........................     105          129           154         315            --           703
                                                    ------       ------       -------      ------        ------       -------
        Total(3)..................................  $1,476       $3,171       $ 1,692      $1,510        $  995       $ 8,844
                                                    ======       ======       =======      ======        ======       =======
Depreciation, Depletion and Amortization..........  $  307       $  485       $   156      $  137                     $ 1,085
Dry Hole Costs and Impairment of Unproved
  Properties......................................  $   65       $   72                                               $   137
Capital Expenditures and Investments(4)...........  $  400       $  864       $   218      $  462                     $ 1,944
- ------------
(1) Includes After-Tax Benefits (Charges) from
    Special Items:
    1998
      Asset Sales.................................  $   41       $   54       $    --      $   12        $   --       $   107
      Property Impairments........................     (32)          (6)           --          --            --           (38)
      Inventory Write-downs.......................      (4)          --           (40)        (19)           --           (63)
      Employee Separation Costs...................     (19)         (23)           (5)         (5)           --           (52)
      Environmental Litigation Charges............      --           --           (28)         --           (14)          (42)
      Stock Option Provision......................      --           --            --          --          (183)         (183)
                                                    ------       ------       -------      ------        ------       -------
            Total.................................  $  (14)      $   25       $   (73)     $  (12)       $ (197)      $  (271)
                                                    ======       ======       =======      ======        ======       =======
    1997
      Asset Sales.................................  $   49       $  191       $    --      $   --        $   --       $   240
      Property Impairments........................      --         (112)           --         (55)           --          (167)
      Environmental Litigation Charges............      --           --           (23)         --            --           (23)
      Tax Rate Changes............................      --           19            --          11            --            30
            Total.................................  $   49       $   98       $   (23)     $  (44)       $   --       $    80
                                                    ======       ======       =======      ======        ======       =======
</TABLE>

                                      F-36
<PAGE>   191
                                  CONOCO INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)

<TABLE>
<CAPTION>
                                                           UPSTREAM                 DOWNSTREAM
                                                    -----------------------   -----------------------   CORPORATE
                                                    UNITED                    UNITED                       AND
SEGMENT INFORMATION                                 STATES    INTERNATIONAL   STATES    INTERNATIONAL     OTHER     CONSOLIDATED
- -------------------                                 ------    -------------   -------   -------------   ---------   ------------
<S>                                                 <C>       <C>             <C>       <C>             <C>         <C>
    1996
      Asset Sales.................................  $   16       $   --       $    --      $   19        $   --       $    35
      Property Impairments........................      --          (63)           --          --            --           (63)
      Employee Separation Costs...................      (7)          (4)           (8)         (3)           --           (22)
      Environmental Litigation Insurance
        Recoveries................................      --           --            44          --            --            44
                                                    ------       ------       -------      ------        ------       -------
            Total.................................  $    9       $  (67)      $    36      $   16        $   --       $    (6)
                                                    ======       ======       =======      ======        ======       =======
</TABLE>

(2) Includes sales of purchased products substantially at cost:

<TABLE>
<CAPTION>
                                                               1998     1997     1996
                                                              ------   ------   ------
<S>                                                           <C>      <C>      <C>
Buy/sell supply transactions settled in cash:
  Crude oil.................................................  $2,728   $3,566   $2,820
  Refined products..........................................     438      683      729
Natural gas resales.........................................   1,109      773      560
Electric power resales......................................     729      487       58
</TABLE>

(3) Capital Employed is equivalent to the sum of Stockholders' Equity/Owner's
    Net Investment and Borrowings (both short-term and long-term portions).
    Borrowings include amounts due related parties, net of associated Notes
    Receivable. Amounts identified for operating segments comprise those assets
    and liabilities not deemed to be of a general corporate nature, such as cash
    and cash equivalents, financing-oriented items and aviation investment.

(4) Includes investments in affiliates.

<TABLE>
<CAPTION>
                                               UNITED    UNITED                         OTHER
GEOGRAPHIC INFORMATION                         STATES    KINGDOM   GERMANY   NORWAY   COUNTRIES   CONSOLIDATED
- ----------------------                         -------   -------   -------   ------   ---------   ------------
<S>                                            <C>       <C>       <C>       <C>      <C>         <C>
1998
Sales and Other Operating Revenues(1)........  $12,878   $4,305    $2,881    $  289    $2,443       $22,796
Long-Lived Assets at December 31(2)..........  $ 5,122   $3,577    $  195    $1,547    $  972       $11,413
1997
Sales and Other Operating Revenues(1)........  $15,229   $4,480    $3,007    $  406    $2,674       $25,796
Long-Lived Assets at December 31(2)..........  $ 4,956   $3,284    $  168    $1,559    $  861       $10,828
1996
Sales and Other Operating Revenues(1)........  $13,386   $4,241    $3,260    $  508    $2,835       $24,230
Long-Lived Assets at December 31(2)..........  $ 4,086   $3,201    $  203    $1,757    $  835       $10,082
</TABLE>

- ---------------

(1) Revenues are attributed to countries based on location of the selling
    entity.

(2) Represents Net Property, Plant and Equipment.

28. OTHER FINANCIAL INFORMATION

     Research and development expenses were $42, $44 and $41 for the years 1998,
1997 and 1996, respectively.

                                      F-37
<PAGE>   192

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                             (DOLLARS IN MILLIONS)
                                  (UNAUDITED)

OIL AND GAS PRODUCING ACTIVITIES

     Supplemental Petroleum Data disclosures are presented in accordance with
the provisions of Statement of Financial Accounting Standards (SFAS) No. 69,
"Disclosures About Oil and Gas Producing Activities."

     Accordingly, volumes of reserves and production exclude royalty interests
of others, and royalty payments are reflected as reductions in revenues.

RESULTS OF OPERATIONS FOR OIL AND GAS PRODUCING ACTIVITIES

<TABLE>
<CAPTION>
                             TOTAL WORLDWIDE            UNITED STATES               EUROPE                OTHER REGIONS
                         ------------------------   ---------------------   -----------------------   ---------------------
                          1998     1997     1996    1998    1997    1996    1998     1997     1996    1998    1997    1996
                         ------   ------   ------   -----   -----   -----   -----   ------   ------   -----   -----   -----
<S>                      <C>      <C>      <C>      <C>     <C>     <C>     <C>     <C>      <C>      <C>     <C>     <C>
CONSOLIDATED COMPANIES
Revenues:
  Sales................  $1,938   $2,603   $2,479   $ 643   $ 787   $ 621   $ 831   $1,181   $1,204   $ 464   $ 635   $ 654
  Transfers............     646      849      927     272     272     363     374      577      566      --      --      (2)
Exploration(1).........    (380)    (457)    (404)   (128)   (134)   (151)   (108)    (131)    (159)   (144)   (192)    (94)
Production.............    (806)    (854)    (755)   (303)   (320)   (297)   (382)    (409)    (372)   (121)   (125)    (86)
DD&A...................    (799)    (827)    (770)   (345)   (246)   (282)   (372)    (419)    (440)    (82)   (162)(2)   (48)
Other(3)...............     148      321       69     104     106      48      48      215       (1)     (4)     --      22
Income taxes...........    (201)    (847)    (912)    (36)   (109)    (47)   (100)    (393)    (436)    (65)   (345)   (429)
                         ------   ------   ------   -----   -----   -----   -----   ------   ------   -----   -----   -----
  Results of
    operations.........     546      788      634     207     356     255     291      621      362      48    (189)     17
EQUITY AFFILIATES
Results of
  operations...........      (4)      30       32       4       7       7       5       29       25     (13)     (6)     --
                         ------   ------   ------   -----   -----   -----   -----   ------   ------   -----   -----   -----
        Total..........  $  542   $  818   $  666   $ 211   $ 363   $ 262   $ 296   $  650   $  387   $  35   $(195)  $  17
                         ======   ======   ======   =====   =====   =====   =====   ======   ======   =====   =====   =====
</TABLE>

- ---------------

(1) Includes exploration operating expenses, dry hole costs, impairment of
    unproved properties and depreciation.

(2) Includes charges of $112 for impairment of non-revenue producing properties.

(3) Includes gain/(loss) on disposal of fixed assets and other miscellaneous
    revenues and expenses.

                                      F-38
<PAGE>   193

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                             (DOLLARS IN MILLIONS)
                                  (UNAUDITED)

COSTS INCURRED IN OIL AND GAS PROPERTY ACQUISITION, EXPLORATION AND DEVELOPMENT
ACTIVITIES(1)

<TABLE>
<CAPTION>
                                        TOTAL WORLDWIDE            UNITED STATES             EUROPE             OTHER REGIONS
                                    ------------------------   ---------------------   -------------------   --------------------
                                     1998     1997     1996    1998    1997     1996   1998    1997   1996   1998    1997    1996
                                    ------   ------   ------   ----   ------    ----   ----    ----   ----   ----    ----    ----
<S>                                 <C>      <C>      <C>      <C>    <C>       <C>    <C>     <C>    <C>    <C>     <C>     <C>
CONSOLIDATED COMPANIES
Property acquisitions
 Proved(2)........................  $  254   $  152   $   21   $ 24   $  148    $ 14   $230(3) $ --   $ --   $ --    $  4    $  7
 Unproved.........................      93      831       42     55      723(4)   41     25      95     --     13      13       1
Exploration.......................     436      450      445    119      107     144    114     135    169    203     208     132
Development.......................   1,019      921      828    542      289     203    403     568    543     74      64      82
                                    ------   ------   ------   ----   ------    ----   ----    ----   ----   ----    ----    ----
       Total......................   1,802    2,354    1,336    740    1,267     402    772     798    712    290     289     222
EQUITY AFFILIATES
Total Equity Affiliates...........     564      263       19     30       12       5      2       2     14    532(5)  249(5)   --
                                    ------   ------   ------   ----   ------    ----   ----    ----   ----   ----    ----    ----
       Total......................  $2,366   $2,617   $1,355   $770   $1,279    $407   $774    $800   $726   $822    $538    $222
                                    ======   ======   ======   ====   ======    ====   ====    ====   ====   ====    ====    ====
</TABLE>

- ---------------

(1) These data comprise all costs incurred in the activities shown, whether
    capitalized or charged to expense at the time they were incurred.

(2) Does not include properties acquired through property trades.

(3) Includes acquisition costs associated with petroleum reserves acquired in
    the North Sea.

(4) Includes acquisition costs associated with gas reserves acquired in the
    South Texas Lobo trend.

(5) Represents Conoco's equity share of the Petrozuata heavy oil venture in
    Venezuela.

CAPITALIZED COSTS RELATING TO OIL AND GAS PRODUCING ACTIVITIES
<TABLE>
<CAPTION>
                                      TOTAL WORLDWIDE               UNITED STATES                  EUROPE
                                ---------------------------   -------------------------   -------------------------
                                 1998      1997      1996      1998     1997      1996     1998      1997     1996
                                -------   -------   -------   ------   ------    ------   ------    ------   ------
<S>                             <C>       <C>       <C>       <C>      <C>       <C>      <C>       <C>      <C>
CONSOLIDATED COMPANIES
Gross costs:
 Proved properties............  $13,488   $12,420   $11,914   $5,013   $4,676    $4,255   $6,942(1) $6,276   $6,268
 Unproved properties..........    1,159     1,491       913      634      774(2)    262      262       432      444
Less: Accumulated DD&A........    7,469     7,201     6,886    2,983    2,907     2,816    3,182     3,008    2,954
                                -------   -------   -------   ------   ------    ------   ------    ------   ------
       Total net costs........    7,178     6,710     5,941    2,664    2,543     1,701    4,022     3,700    3,758
EQUITY AFFILIATES
Net costs of equity
 affiliates...................      976       441       199       66       45        37      132       147      162
                                -------   -------   -------   ------   ------    ------   ------    ------   ------
       Total..................  $ 8,154   $ 7,151   $ 6,140   $2,730   $2,588    $1,738   $4,154    $3,847   $3,920
                                =======   =======   =======   ======   ======    ======   ======    ======   ======

<CAPTION>
                                      OTHER REGIONS
                                --------------------------
                                 1998      1997      1996
                                ------    ------    ------
<S>                             <C>       <C>       <C>
CONSOLIDATED COMPANIES
Gross costs:
 Proved properties............  $1,533    $1,468    $1,391
 Unproved properties..........     263       285       207
Less: Accumulated DD&A........   1,304     1,286     1,116
                                ------    ------    ------
       Total net costs........     492       467       482
EQUITY AFFILIATES
Net costs of equity
 affiliates...................     778(3)    249(3)     --
                                ------    ------    ------
       Total..................  $1,270    $  716    $  482
                                ======    ======    ======
</TABLE>

- ---------------

(1) Includes acquisition costs associated with petroleum reserves acquired in
    the North Sea.

(2) Includes acquisition costs associated with gas reserves acquired in the
    South Texas Lobo trend.

(3) Represents Conoco's equity share of the Petrozuata heavy oil venture in
    Venezuela.

                                      F-39
<PAGE>   194

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                            (IN MILLIONS OF BARRELS)
                                  (UNAUDITED)

ESTIMATED PROVED RESERVES OF OIL(1)

<TABLE>
<CAPTION>
                                        TOTAL WORLDWIDE        UNITED STATES            EUROPE           OTHER REGIONS
                                      --------------------   ------------------   ------------------   ------------------
                                      1998    1997    1996   1998   1997   1996   1998   1997   1996   1998   1997   1996
                                      -----   -----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                   <C>     <C>     <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
PROVED RESERVES OF CONSOLIDATED
  COMPANIES
Beginning of year...................    893     926    933   277    299    294    421    413    408    195    214    231
Revisions and other changes.........     42      54     55    14      3     11     20     43     36      8      8      8
Extensions and discoveries..........     41      62     75    15     12     31      6     44     35     20      6      9
Improved recovery...................     14       3      4    --      3      4     11     --     --      3     --     --
Purchase of reserves(2).............      8       5     (1)   --      4     (1)     8      1     --     --     --     --
Sale of reserves(3).................    (16)    (27)   (12)  (16)   (11)   (10)    --    (16)    --     --     --     (2)
Production..........................   (119)   (130)  (128)  (29)   (33)   (30)   (56)   (64)   (66)   (34)   (33)   (32)
                                      -----   -----   ----   ---    ---    ---    ---    ---    ---    ---    ---    ---
End of year(4)......................    863     893    926   261    277    299    410    421    413    192    195    214
                                      -----   -----   ----   ---    ---    ---    ---    ---    ---    ---    ---    ---
PROVED RESERVES OF EQUITY AFFILIATES
Beginning of year...................    731      47     44    --     --     --     51     47     44    680     --     --
Revisions and other changes.........      5      10      8    --     --     --      5     10      8     --     --     --
Extensions and discoveries..........     --     680     --    --     --     --     --     --     --     --    680(5)  --
Production..........................     (8)     (6)    (5)   --     --     --     (6)    (6)    (5)    (2)    --     --
                                      -----   -----   ----   ---    ---    ---    ---    ---    ---    ---    ---    ---
End of year.........................    728     731     47    --     --     --     50     51     47    678    680     --
                                      -----   -----   ----   ---    ---    ---    ---    ---    ---    ---    ---    ---
        Total.......................  1,591   1,624    973   261    277    299    460    472    460    870    875    214
                                      =====   =====   ====   ===    ===    ===    ===    ===    ===    ===    ===    ===
PROVED DEVELOPED RESERVES OF
  CONSOLIDATED COMPANIES
Beginning of year...................    600     630    684   242    258    265    174    185    217    184    187    202
End of year.........................    622     600    630   222    242    258    228    174    185    172    184    187
PROVED DEVELOPED RESERVES OF EQUITY
  AFFILIATES
Beginning of year...................     43      39     32    --     --     --     43     39     32     --     --     --
End of year.........................     92      43     39    --     --     --     42     43     39     50     --     --
</TABLE>

- ---------------

(1) Oil reserves comprise crude oil and condensate and natural gas liquids
    expected to be removed for the Company's account from its natural gas
    deliveries.

(2) Includes reserves acquired through property trades.

(3) Includes reserves disposed of through property trades.

(4) Includes reserves of 123, 87 and 89 at year-end 1998, 1997 and 1996,
    respectively, attributable to Conoco Oil & Gas Associates L.P. in which
    there is a minority interest with an approximate 20 percent average revenue
    share (see Note 19).

(5) Represents Conoco's equity share of the Petrozuata heavy oil venture in
    Venezuela.

                                      F-40
<PAGE>   195

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                            (IN BILLION CUBIC FEET)
                                  (UNAUDITED)

ESTIMATED PROVED RESERVES OF GAS

<TABLE>
<CAPTION>
                                      TOTAL WORLDWIDE          UNITED STATES               EUROPE               OTHER REGIONS
                                   ---------------------   ----------------------   ---------------------   ---------------------
                                   1998    1997    1996    1998     1997    1996    1998    1997    1996    1998    1997    1996
                                   ----    ----    ----    ----     ----    ----    ----    ----    ----    ----    ----    ----
<S>                                <C>     <C>     <C>     <C>      <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
PROVED RESERVES OF CONSOLIDATED
  COMPANIES
Beginning of year................  5,491   5,063   4,709   2,235    1,822   1,891   3,060   3,068   2,649    196     173     169
Revisions and other changes......     25     134      41      18       --      79     (20)     97     (39)    27      37       1
Extensions and discoveries.......    961     518     780     624      453     176     111      59     574    226       6      30
Improved recovery................     --       1      --      --        1      --      --      --      --     --      --      --
Purchase of reserves(1)..........    116     270      41       4      264(2)     3    112      --      36     --       6       2
Sale of reserves(3)..............   (281)    (62)    (71)   (243)     (46)    (57)    (38)     (7)     --     --      (9)    (14)
Production.......................   (510)   (433)   (437)   (319)    (259)   (270)   (172)   (157)   (152)   (19)    (17)    (15)
                                   -----   -----   -----   -----    -----   -----   -----   -----   -----    ---     ---     ---
End of year(4)...................  5,802   5,491   5,063   2,319    2,235   1,822   3,053   3,060   3,068    430     196     173
                                   -----   -----   -----   -----    -----   -----   -----   -----   -----    ---     ---     ---
PROVED RESERVES OF EQUITY
  AFFILIATES
Beginning of year................    370     333     339     370      333     339      --      --      --     --      --      --
Revisions and other changes......    (12)     (6)     --     (12)      (6)     --      --      --      --     --      --      --
Extensions and discoveries.......      1      49      --       1       49      --      --      --      --     --      --      --
Purchase of reserves.............     27      --      --      27       --      --      --      --      --     --      --      --
Production.......................     (5)     (6)     (6)     (5)      (6)     (6)     --      --      --     --      --      --
                                   -----   -----   -----   -----    -----   -----   -----   -----   -----    ---     ---     ---
End of Year......................    381     370     333     381      370     333      --      --      --     --      --      --
                                   -----   -----   -----   -----    -----   -----   -----   -----   -----    ---     ---     ---
        Total....................  6,183   5,861   5,396   2,700    2,605   2,155   3,053   3,060   3,068    430     196     173
                                   =====   =====   =====   =====    =====   =====   =====   =====   =====    ===     ===     ===
PROVED DEVELOPED RESERVES OF
  CONSOLIDATED COMPANIES
Beginning of year................  3,061   2,843   2,933   1,801    1,672   1,733   1,091   1,041   1,071    169     130     129
End of year......................  3,991   3,061   2,843   1,828    1,801   1,672   1,954   1,091   1,041    209     169     130
PROVED DEVELOPED RESERVES OF
  EQUITY AFFILIATES
Beginning of year................     40      36      40      40       36      40      --      --      --     --      --      --
End of year......................     66      40      36      66       40      36      --      --      --     --      --      --
</TABLE>

- ---------------

(1) Includes reserves acquired through property trades.

(2) Includes reserves acquired in the South Texas Lobo trend.

(3) Includes reserves disposed of through property trades.

(4) Includes reserves of 121, 115 and 104 at year-end 1998, 1997 and 1996,
    respectively, attributable to Conoco Oil & Gas Associates L.P. in which
    there is a minority interest with an approximate 20 percent average revenue
    share (see Note 19).

                                      F-41
<PAGE>   196

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                                  (UNAUDITED)

STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL
AND GAS RESERVES

     The information on the following page has been prepared in accordance with
SFAS No. 69, which requires the standardized measure of discounted future net
cash flows to be based on year-end sales prices, costs and statutory income tax
rates and a 10 percent annual discount rate. Specifically, the per-barrel oil
sales prices used to calculate the December 31, 1998, data averaged $9.40 for
the United States, $10.69 for Europe and $10.67 for Other Regions, and the gas
prices per thousand cubic feet averaged approximately $1.70 for the United
States, $2.29 for Europe and $1.90 for Other Regions. Because prices used in the
calculation are as of December 31, the standardized measure could vary
significantly from year to year based on market conditions at that specific
date.

     The projections should not be viewed as realistic estimates of future cash
flows nor should the "standardized measure" be interpreted as representing
current value to the Company. Material revisions to estimates of proved reserves
may occur in the future, development and production of the reserves may not
occur in the periods assumed, actual prices realized are expected to vary
significantly from those used and actual costs may also vary. The Company's
investment and operating decisions are not based on the information presented on
the following page, but on a wide range of reserve estimates that includes
probable as well as proved reserves, and on different price and cost assumptions
from those reflected in this information.

                                      F-42
<PAGE>   197

                                  CONOCO INC.

                          SUPPLEMENTAL PETROLEUM DATA
                             (DOLLARS IN MILLIONS)
                                  (UNAUDITED)

STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL
AND GAS RESERVES
<TABLE>
<CAPTION>
                               TOTAL WORLDWIDE                 UNITED STATES                    EUROPE
                         ----------------------------   ---------------------------   ---------------------------
                          1998      1997       1996      1998      1997      1996      1998      1997      1996
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
<S>                      <C>       <C>       <C>        <C>       <C>       <C>       <C>       <C>       <C>
CONSOLIDATED COMPANIES
Future cash flows:
  Revenues.............  $20,340   $26,666   $ 34,366   $ 6,148   $ 8,355   $10,044   $11,376   $15,119   $19,364
  Production costs.....   (8,271)   (9,251)   (10,406)   (2,665)   (2,997)   (3,085)   (4,742)   (5,387)   (6,378)
  Development costs....   (1,548)   (1,586)    (1,669)     (370)     (446)     (283)     (823)   (1,094)   (1,294)
  Income tax expense...   (3,904)   (6,822)   (10,364)     (546)   (1,175)   (2,041)   (2,239)   (3,921)   (5,179)
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
Future net cash
  flows................    6,617     9,007     11,927     2,567     3,737     4,635     3,572     4,717     6,513
Discounted to present
  value at a 10% annual
  rate.................   (2,414)   (3,384)    (4,638)   (1,055)   (1,552)   (2,088)   (1,151)   (1,679)   (2,317)
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
        Total(1).......    4,203     5,623      7,289     1,512     2,185     2,547     2,421     3,038     4,196
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
EQUITY AFFILIATES
Future cash flows:
  Revenues.............    5,327     8,520      1,971     1,001       893       968       427       651     1,003
  Production costs.....   (2,228)   (2,640)      (597)     (346)     (267)     (242)     (266)     (315)     (355)
  Development costs....   (1,086)   (1,300)      (180)     (191)     (174)     (157)      (28)      (30)      (23)
  Income tax expense...     (425)   (1,090)      (496)     (166)     (161)     (193)      (63)     (170)     (303)
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
Future net cash
  flows................    1,588     3,490        698       298       291       376        70       136       322
Discounted to present
  value at a 10% annual
  rate.................   (1,327)   (2,886)      (398)     (220)     (226)     (277)       (9)      (44)     (121)
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
        Total..........      261       604        300        78        65        99        61        92       201
                         -------   -------   --------   -------   -------   -------   -------   -------   -------
        Total..........  $ 4,464   $ 6,227   $  7,589   $ 1,590   $ 2,250   $ 2,646   $ 2,482   $ 3,130   $ 4,397
                         =======   =======   ========   =======   =======   =======   =======   =======   =======

<CAPTION>
                                OTHER REGIONS
                         ---------------------------
                          1998      1997      1996
                         -------   -------   -------
<S>                      <C>       <C>       <C>
CONSOLIDATED COMPANIES
Future cash flows:
  Revenues.............  $ 2,816   $ 3,192   $ 4,958
  Production costs.....     (864)     (867)     (943)
  Development costs....     (355)      (46)      (92)
  Income tax expense...   (1,119)   (1,726)   (3,144)
                         -------   -------   -------
Future net cash
  flows................      478       553       779
Discounted to present
  value at a 10% annual
  rate.................     (208)     (153)     (233)
                         -------   -------   -------
        Total(1).......      270       400       546
                         -------   -------   -------
EQUITY AFFILIATES
Future cash flows:
  Revenues.............    3,899     6,976        --
  Production costs.....   (1,616)   (2,058)       --
  Development costs....     (867)   (1,096)       --
  Income tax expense...     (196)     (759)       --
                         -------   -------   -------
Future net cash
  flows................    1,220     3,063        --
Discounted to present
  value at a 10% annual
  rate.................   (1,098)   (2,616)       --
                         -------   -------   -------
        Total..........      122       447        --
                         -------   -------   -------
        Total..........  $   392   $   847   $   546
                         =======   =======   =======
</TABLE>

- ---------------

(1) Includes $263, $372 and $686 at year-end 1998, 1997 and 1996, respectively,
    attributable to Conoco Oil & Gas Associates L.P. in which there is a
    minority interest with an approximate 20 percent average revenue share (see
    Note 19).

SUMMARY OF CHANGES IN STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS
RELATING TO PROVED OIL AND GAS RESERVES

<TABLE>
<CAPTION>
                                                                 CONSOLIDATED COMPANIES             EQUITY AFFILIATES
                                                              -----------------------------    ---------------------------
                                                               1998       1997       1996       1998       1997      1996
                                                              -------    -------    -------    -------    -------    -----
<S>                                                           <C>        <C>        <C>        <C>        <C>        <C>
Balance at January 1........................................  $ 5,623    $ 7,289    $ 5,158    $   604    $   300    $ 151
Sales and transfers of oil and gas produced, net of
  production costs..........................................   (1,778)    (2,583)    (2,647)        (2)       (56)     (73)
Development costs incurred during the period................    1,019        921        828        555        218       20
Net changes in prices and in development and production
  costs.....................................................   (3,948)    (4,974)     2,525     (1,155)    (1,242)     119
Extensions, discoveries and improved recovery, less related
  costs.....................................................      838        818      1,630          1      1,181        4
Revisions of previous quantity estimates....................      189        439        553          2         37       83
Purchases (sales) of reserves in place -- net...............      (92)        36        (54)        18         --       --
Accretion of discount.......................................      916      1,312        931         84         55       25
Net change in income taxes..................................    1,541      2,285     (1,676)       128         16     (152)
Other.......................................................     (105)        80         41         26         95      123
                                                              -------    -------    -------    -------    -------    -----
Balance at December 31......................................  $ 4,203    $ 5,623    $ 7,289    $   261    $   604    $ 300
                                                              =======    =======    =======    =======    =======    =====
</TABLE>

                                      F-43
<PAGE>   198

                                  CONOCO INC.

                     CONSOLIDATED QUARTERLY FINANCIAL DATA
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                    QUARTER ENDED
                                                  -------------------------------------------------
                                                  MARCH 31    JUNE 30    SEPTEMBER 30   DECEMBER 31
                                                  --------    -------    ------------   -----------
<S>                                               <C>         <C>        <C>            <C>
1998
Sales and Other Operating Revenues(1)...........   $5,736     $5,612        $5,916        $5,532
Cost of Goods Sold and Other Expenses(2)........    5,327      5,374         5,620         5,954
Interest and Debt Expense.......................        1         --           107            91
Net Income (Loss)...............................      316(5)     214(6)        183          (263)(7)
Earnings Per Share
  Basic(3)......................................   $  .72     $  .49        $  .42        $ (.45)
  Diluted(3)....................................   $  .72     $  .49        $  .42        $ (.45)
Market Price of Common Stock(4)
  High..........................................                                          $25 3/4
  Low...........................................                                          $19 3/8

1997
Sales and Other Operating Revenues(1)...........   $6,560     $5,915        $6,671        $6,650
Cost of Goods Sold and Other Expenses(2)........    5,898      5,501         6,269         6,452
Interest and Debt Expense.......................       15          9             7             5
Net Income......................................      341        246(8)        289(9)        221(10)
Earnings Per Share
  Basic(3)......................................   $  .78     $  .56        $  .66        $  .51
  Diluted(3)....................................   $  .78     $  .56        $  .66        $  .51
</TABLE>

- ---------------

 (1) Excludes other income of $98, $40, $113 and $121 in each of the quarters in
     1998 and $55, $70, $28 and $314 in each of the quarters in 1997.

 (2) Excludes provision for income taxes.

 (3) Earnings per share for the year may not equal the sum of the quarterly
     earnings per share due to changes in average shares outstanding. Earnings
     per share for the periods prior to the Offerings was calculated using only
     Class B Common Stock, as required by SFAS 128 (see Note 8 to the
     consolidated financial statements).

 (4) The Company's Class A Common Stock is listed on the New York Stock Exchange
     (trading symbol: COC) and commenced trading on October 22, 1998. Prices are
     as reported in the New York Stock Exchange, Inc. Composite Transactions
     Tape.

 (5) Includes gain of $23 ($.04 per share-diluted) from sale of certain Upstream
     properties.

 (6) Includes net benefit of $3 ($.01 per share-diluted) reflecting: tax benefit
     of $31 from sale of an international Upstream subsidiary and a $28 charge
     for U.S. Downstream environmental litigation.

 (7) Includes net charge of $297 ($.47 per share-diluted) reflecting: charges of
     $183 for non-cash stock option compensation expense related to the
     Offerings, $63 for write-down of inventories to market, $52 principally for
     employee separation costs, $38 for impairment of long-lived Upstream
     properties located in Texas and in the Gulf of Mexico, as well as a
     write-down of a nonoperating gas plant in Texas and an exploration license
     in Norway, and $14 for environmental litigation charges and gains of $41
     from the sale of U.S. producing properties and $12 from sale of an office
     building.

 (8) Includes gain of $24 ($.04 per share-diluted) from sale of U.S. producing
     properties.

                                      F-44
<PAGE>   199

 (9) Includes net benefit of $37 ($.05 per share-diluted) reflecting: gain of
     $30 from sale of North Sea properties, benefit of $30 from foreign tax rate
     changes, and charge of $23 for environmental litigation charges.

(10) Includes a net benefit of $19 ($.03 per share-diluted) reflecting: a gain
     of $186 from the sale of North Sea and U.S. Upstream properties, a charge
     of $112 for impairment of non-revenue producing properties, and a charge of
     $55 for write-down of an office building held for sale.

                                      F-45
<PAGE>   200

                   INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                                  CONOCO INC.

                CONSOLIDATED STATEMENT OF INCOME (NOTES 1 AND 3)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                              THREE MONTHS ENDED
                                                                   MARCH 31
                                                              ------------------
                                                               1999        1998
                                                              ------      ------
                                                                (IN MILLIONS,
                                                              EXCEPT PER SHARE)
<S>                                                           <C>         <C>
Revenues
  Sales and Other Operating Revenues*.......................  $5,311      $5,736
  Other Income..............................................      24          98
                                                              ------      ------
          Total Revenues....................................   5,335       5,834
                                                              ------      ------
Cost and Expenses
  Cost of Goods Sold and Other Operating Expenses...........   3,005       3,393
  Selling, General and Administrative Expenses..............     186         183
  Exploration Expenses......................................      46          67
  Depreciation, Depletion and Amortization..................     302         267
  Taxes Other Than on Income*...............................   1,591       1,417
  Interest and Debt Expense.................................      71           1
                                                              ------      ------
          Total Cost and Expenses...........................   5,201       5,328
                                                              ------      ------
Income Before Income Taxes..................................     134         506
Provision for Income Taxes..................................      51         190
                                                              ------      ------
Net Income (Note 10)........................................  $   83      $  316
                                                              ======      ======
Earnings Per Share (Note 4)
  Basic.....................................................  $  .13      $  .72
  Diluted...................................................  $  .13      $  .72
Weighted Average Shares Outstanding (Note 4)
  Class A**.................................................     191          --
  Class B...................................................     437         437
                                                              ------      ------
          Total Basic.......................................     628         437
  Stock Options**...........................................       7          --
                                                              ------      ------
          Total Diluted.....................................     635         437
Dividends Per Share of Common Stock (Note 5)................  $  .14      $   --
</TABLE>

- ---------------
 * Includes petroleum excise taxes..........................  $1,546      $1,373

** Earnings Per Share for the period prior to the Offerings was calculated using
   only Class B Common Stock as required by SFAS 128 (See Note 4).

        See Notes to Unaudited Interim Consolidated Financial Statements

                                      F-46
<PAGE>   201

                   INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                                  CONOCO INC.

                   CONSOLIDATED BALANCE SHEET (NOTES 1 AND 3)
                                  (UNAUDITED)

                                     ASSETS

<TABLE>
<CAPTION>
                                                              MARCH 31,   DECEMBER 31,
                                                                1999          1998
                                                              ---------   ------------
                                                                   (IN MILLIONS)
<S>                                                           <C>         <C>
Current Assets
  Cash and Cash Equivalents.................................  $    425      $    394
  Accounts and Notes Receivable.............................     1,228         1,191
  Inventories (Note 6)......................................       899           807
  Prepaid Expenses..........................................       305           378
                                                              --------      --------
          Total Current Assets..............................     2,857         2,770
Property, Plant and Equipment...............................    22,031        22,094
Less: Accumulated Depreciation, Depletion and
  Amortization..............................................   (10,801)      (10,681)
                                                              --------      --------
Net Property, Plant and Equipment...........................    11,230        11,413
                                                              --------      --------
Investment in Affiliates....................................     1,445         1,363
Other Assets................................................       548           529
                                                              --------      --------
          Total.............................................  $ 16,080      $ 16,075
                                                              ========      ========

                         LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities
  Accounts Payable..........................................  $  1,355      $  1,312
  Short-Term Borrowings -- Related Parties..................       926            --
  Other Short-Term Borrowings and Capital Lease
     Obligations............................................        29            52
  Income Taxes..............................................       171           199
  Other Accrued Liabilities (Note 7)........................     1,082         1,162
                                                              --------      --------
          Total Current Liabilities.........................     3,563         2,725
Long-Term Borrowings -- Related Parties.....................     3,970         4,596
Other Long-Term Borrowings and Capital Lease Obligations....        93            93
Deferred Income Taxes.......................................     1,658         1,714
Other Liabilities and Deferred Credits......................     2,144         2,200
                                                              --------      --------
          Total Liabilities.................................    11,428        11,328
                                                              --------      --------
Commitments and Contingent Liabilities (Note 8)
Minority Interests..........................................       310           309
Stockholders' Equity
  Preferred Stock, $.01 par value:
  250,000,000 shares authorized; none issued................        --            --
  Class A Common Stock, $.01 par value:
  3,000,000,000 shares authorized; 191,497,821 shares
     issued.................................................         2             2
  Class B Common Stock, $.01 par value:
  1,600,000,000 shares authorized; 436,543,573 shares issued
     and outstanding........................................         4             4
  Additional Paid-In Capital................................     4,975         4,955
  Accumulated Deficit.......................................      (250)         (244)
  Accumulated Other Comprehensive Loss (Note 9).............      (367)         (274)
  Treasury Stock, at cost (1,032,607 and 249,863 Class A
     shares at March 31, 1999 and December 31, 1998,
     respectively)..........................................       (22)           (5)
                                                              --------      --------
          Total Stockholders' Equity........................     4,342         4,438
                                                              --------      --------
          Total.............................................  $ 16,080      $ 16,075
                                                              ========      ========
</TABLE>

        See Notes to Unaudited Interim Consolidated Financial Statements

                                      F-47
<PAGE>   202

                   INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                                  CONOCO INC.

              CONSOLIDATED STATEMENT OF CASH FLOWS (NOTES 1 AND 3)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                THREE MONTHS ENDED
                                                                     MARCH 31
                                                                -------------------
                                                                 1999        1998
                                                                ------      -------
                                                                   (IN MILLIONS)
<S>                                                             <C>         <C>
Cash Provided by Operations
  Net Income................................................    $  83       $  316
  Adjustments to Reconcile Net Income to Cash Provided by
     Operations:
     Depreciation, Depletion and Amortization...............      302          267
     Dry Hole Costs and Impairment of Unproved Properties...       17           22
     Deferred Income Taxes..................................      (42)          48
     Income Applicable to Minority Interest.................        5            5
     Other Noncash Charges and Credits -- Net...............        8          (51)
     Decrease (Increase) in Operating Assets:
       Accounts and Notes Receivable........................      (52)         178
       Inventories..........................................     (107)        (192)
       Other Operating Assets...............................       25          (98)
     Increase (Decrease) in Operating Liabilities:
       Accounts Payable and Other Operating Liabilities.....      113         (379)
       Accrued Interest and Income Taxes....................       41         (104)
                                                                -----       ------
          Cash Provided by Operations.......................      393           12
                                                                -----       ------
Investment Activities
  Purchases of Property, Plant and Equipment................     (457)        (389)
  Investments in Affiliates.................................     (100)         (42)
  Proceeds from Sales of Assets and Subsidiaries............       18          275
  Net Decrease (Increase) in Short-Term Financial
     Instruments............................................       (8)          (9)
                                                                -----       ------
          Cash Used for Investment Activities...............     (547)        (165)
                                                                -----       ------
Financing Activities
  Cash Dividends (Note 5)...................................      (88)          --
  Short-Term Borrowings -- Receipts.........................       --            2
                            -- Payments.....................       (1)         (21)
  Other Long-Term Borrowings -- Payments....................      (19)          (3)
  Treasury Stock Purchases..................................      (18)          --
  Transactions with Related Parties:
       Notes Receivable -- Receipts.........................       --           48
                          -- Payments.......................       --         (162)
       Borrowings -- Receipts...............................      710          137
                   -- Payments..............................     (410)          --
       Net Cash Contribution From (To) Owner................       19         (258)
  Increase (Decrease) in Minority Interests.................       (5)          (5)
                                                                -----       ------
          Cash Provided by (Used for) Financing
           Activities.......................................      188         (262)
                                                                -----       ------
Effect of Exchange Rate Changes on Cash.....................       (3)          (3)
                                                                -----       ------
Increase (Decrease) in Cash and Cash Equivalents............       31         (418)
Cash and Cash Equivalents at Beginning of Year..............      394        1,147
                                                                -----       ------
Cash and Cash Equivalents at March 31.......................    $ 425       $  729
                                                                =====       ======
</TABLE>

        See Notes to Unaudited Interim Consolidated Financial Statements

                                      F-48
<PAGE>   203

                                  CONOCO INC.

               NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

1. BASIS OF PRESENTATION

     Conoco Inc., including its consolidated subsidiaries ("Conoco"), is an
integrated, global energy company that is involved in the Upstream and
Downstream operating segments of the petroleum industry. Activities of the
Upstream operating segment include exploring for, and developing, producing and
selling crude oil, natural gas and natural gas liquids. Activities of the
Downstream operating segment include refining crude oil and other feedstocks
into petroleum products, buying and selling crude oil and refined products, and
transporting, distributing and marketing petroleum products. Conoco has four
reporting segments for its Upstream and Downstream businesses, reflecting
geographic division between the United States and International. Corporate and
other includes general corporate expenses, financing costs and other
non-operating items, and results for electric power and related-party insurance
operations.

     The initial public offerings (the "Offerings") of the Class A Common Stock
of Conoco commenced on October 21, 1998, and the Class A Common Stock began
trading on the New York Stock Exchange on October 22, 1998. The Offerings
consisted of 191,456,427 shares of Class A Common Stock issued at a price of $23
per share, and represented E.I. du Pont de Nemours and Company's ("DuPont")
first step in the planned divestiture of Conoco. Through its ownership of 100
percent of Conoco's Class B Common Stock (436,543,573 shares), DuPont owned
approximately 70 percent of Conoco's common stock representing approximately 92
percent of the combined voting power of all classes of voting stock of Conoco at
March 31, 1999. The holders of Class A Common Stock and Class B Common Stock
generally have identical rights, except that holders of Class A Common Stock are
entitled to one vote per share while holders of Class B Common Stock are
entitled to five votes per share on matters to be voted on by stockholders.

     Prior to the date of the Offerings, operations were conducted by Conoco
Inc., subsidiaries of Conoco Inc. and, in some cases, subsidiaries of DuPont.
The accompanying consolidated financial statements for this period are presented
on a carve-out basis prepared from DuPont's historical accounting records, and
include the historical operations of both entities owned by Conoco and
operations transferred to Conoco by DuPont at the time of the Offerings. In this
context, no direct ownership relationship existed among all the various units
comprising Conoco. Accordingly, net cash contributions from/to owner prior to
the Offerings included funds transferred between Conoco and DuPont for operating
needs, cash dividends paid and other equity transactions.

     Effective at the time of the Offerings, Conoco's capital structure was
established and the transfer to Conoco of certain subsidiaries previously owned
by DuPont was substantially complete, resulting in direct ownership of those
subsidiaries. Accordingly, for periods subsequent to the Offerings, financial
information is presented on a consolidated basis.

     On March 22, 1999, Conoco filed a registration statement with the
Securities and Exchange Commission ("SEC") outlining a "split-off" plan to
establish Conoco as a fully independent company. This filing is the next step in
DuPont's planned divestiture of Conoco. The tax-free split-off will be achieved
through an exchange offer in which DuPont stockholders will be given an
opportunity to exchange DuPont common stock for shares of Conoco Class B Common
Stock currently held by DuPont. DuPont announced on April 28, 1999 that its
board of directors had approved the split-off plan. Following a review by the
SEC, and depending on market conditions, the split-off is expected to be
completed in the third quarter of 1999.

     These consolidated interim financial statements are unaudited, but reflect
all adjustments that, in the opinion of management, are necessary to provide a
fair presentation of the financial position, results of operations and cash
flows for the dates and periods covered. All such adjustments are of a normal

                                      F-49
<PAGE>   204
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

recurring nature. Interim period results are not necessarily indicative of
results of operations or cash flows for a full-year period. These interim
financial statements should be read in conjunction with the consolidated
financial statements and notes thereto included in Conoco's 1998 Annual Report
on Form 10-K as amended.

2. RECENTLY ISSUED STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS

     Effective January 1, 1999, Conoco adopted Statement of Position 98-5,
"Reporting on the Costs of Start-Up Activities," issued by the American
Institute of Certified Public Accountants. This Statement requires that costs
related to start-up activities, including organization costs, be expensed as
incurred. Conoco's policy has been one of expensing organization and other
similar costs of start-up operations. Accordingly, we have no cumulative charge
to earnings from a write-off of deferred start-up costs as a result of adoption
of this accounting standard.

     In June 1998, the Financial Accounting Standards Board ("FASB") issued
Statement on Financial Accounting Standards ("SFAS") No. 133, "Accounting for
Derivative Instruments and Hedging Activities", which requires that companies
recognize all derivatives as either assets or liabilities in the balance sheet
and measure those instruments at fair value.

     SFAS No. 133 provides, if certain conditions are met, that a derivative may
be specifically designated as:

  -  a hedge of the exposure to changes in the fair value of a recognized asset
     or liability or an unrecognized firm commitment (fair value hedge),

  -  a hedge of the exposure to variable cash flows of a forecasted transaction
     (cash flow hedge), or

  -  a hedge of the foreign currency exposure of a net investment in a foreign
     operation, an unrecognized firm commitment, an available-for-sale security
     or a foreign-currency-denominated forecasted transaction (foreign currency
     hedge).

     Under SFAS No. 133, the accounting for changes in fair value of a
derivative depends on its intended use and designation. For a fair value hedge,
the gain or loss is recognized in earnings in the period of change together with
the offsetting loss or gain on the hedged item. For a cash flow hedge, the
effective portion of the derivative's gain or loss is initially reported as a
component of other comprehensive income and subsequently reclassified into
earnings when the forecasted transaction affects earnings. For a foreign
currency hedge, the gain or loss is reported in other comprehensive income as
part of the cumulative translation adjustment. For all other items not
designated as hedging instruments, the gain or loss is recognized in earnings in
the period of change. Conoco is required to adopt this Statement by the first
quarter of 2000 and is currently assessing its effect on the consolidated
financial statements.

3. RELATED PARTY TRANSACTIONS

     The consolidated financial statements include significant transactions with
DuPont involving services (such as cash management, other financial services,
purchasing, legal, computer and corporate aviation) and general corporate
expenses that were provided between Conoco and DuPont organizations. For periods
prior to the Offerings, the costs of services were directly charged or allocated
between Conoco and DuPont using methods management believes are reasonable.
These methods included negotiated usage rates, dedicated asset assignment and
proportionate corporate formulas involving assets, revenues and employees. Such
charges and allocations were not necessarily indicative of what would have been
incurred if Conoco had been a separate entity.

                                      F-50
<PAGE>   205
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

     Amounts charged and allocated to Conoco for these services were $7 and $34
for the first quarter of 1999 and 1998, respectively, and are principally
included in selling, general and administrative expenses. Conoco provided DuPont
services such as computer, legal and purchasing, as well as certain technical
and plant operating services, which amounted to $7 and $14 for the first quarter
of 1999 and 1998, respectively. These charges to DuPont were treated as
reductions, as appropriate, of cost of goods sold and other operating expenses
and selling, general and administrative expenses.

     Interest expense charged by DuPont was $72 and $27 for the first quarter of
1999 and 1998, respectively, and reflects market-based interest rates. A portion
of historical related party interest cost and other interest expense of $2 and
$28 for the first quarter of 1999 and 1998, respectively, was capitalized as
costs associated with major construction projects. Interest income from DuPont
was $16 for the first quarter of 1998 and also reflects market-based interest
rates.

     Sales and other operating revenues include sales of products from Conoco to
DuPont, principally natural gas and gas liquids to supply several DuPont plant
sites. These sales totaled $91 and $110 in the first quarter of 1999 and 1998,
respectively. Also included, for the first quarter of 1998, are revenues of $5
from insurance premiums charged to DuPont for property and casualty coverage
outside the United States. Purchases of products from DuPont during these
periods were not material. Subsequent to the Offerings, these intercompany
arrangements between DuPont and Conoco, excluding insurance coverage provided to
DuPont, are provided under transition service agreements or other long-term
agreements. It is not anticipated that a change, if any, in these costs and
revenues would have a material effect on Conoco's results of operations or
consolidated financial position.

     Accounts and notes receivable include amounts due from DuPont of $48 and
$80 at March 31, 1999, and December 31, 1998, respectively, representing current
month balances of transactions between Conoco and DuPont, mainly product sales
and certain charges billed annually. Accounts payable include amounts due DuPont
of $35 and $52 at March 31, 1999, and December 31, 1998, respectively. Other
liabilities include accrued interest of $122 and $51 due DuPont at March 31,
1999 and December 31, 1998, respectively.

     Amounts representing notes receivable or borrowings from DuPont, including
its subsidiary organizations, are identified as related parties and presented
separately in the consolidated balance sheet. At December 31, 1998, Conoco had
long-term borrowings from related parties of $4,596, representing the balance
under two promissory notes due on or before January 2, 2000. At March 31, 1999,
Conoco had aggregate related parties borrowings of $4,896 consisting of
short-term borrowings of $926 and long-term borrowings of $3,970. The short-term
borrowings consisted of $300 under a revolving credit agreement and $626 under
two promissory notes due on or before January 2, 2000. Subsequent to March 31,
1999, the long-term borrowings were refinanced with proceeds from placement of
public debt as described below. Consequently, the senior borrowings have been
classified as long-term pursuant to SFAS 6.

     On April 20, 1999, Conoco completed the public offering and sale of $4,000
of senior debt securities. The senior debt securities consisted of three
tranches as follows:

     - $1,350 in five-year notes due 2004 with a coupon of 5.90 percent, offered
       to the public at 99.856 percent.

     - $750 in ten-year notes due 2009 with a coupon of 6.35 percent, offered to
       the public at par.

     - $1,900 in 30-year notes due 2029 with a coupon of 6.95 percent, offered
       to the public at par.

     Conoco achieved a weighted average interest rate of 6.49 percent in this
financing. After deducting the note discount and underwriting discounts the net
proceeds of $3,970 received from the senior debt offerings were used to repay a
portion of the outstanding principal and accrued interest owed to DuPont

                                      F-51
<PAGE>   206
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

under one of the promissory notes. In May 1999, Conoco instituted a commercial
paper program with a borrowing capacity up to $2,000. Through May 1999, Conoco
had issued $1,022 under this program, the proceeds of which were used to repay
remaining debt and accrued interest to DuPont.

4. EARNINGS PER SHARE

     Basic earnings per share ("EPS") is computed by dividing net income (the
numerator) by the weighted average number of common shares outstanding plus the
effects of award and fee deferrals that are invested in Conoco stock units by
certain employees and directors of Conoco (the denominator). Diluted EPS is
similarly computed, except that the denominator is increased to include the
dilutive effects of outstanding stock options awarded under Conoco's
compensation plans.

     As described in Note 1, Conoco's capital structure was established at the
time of the Offerings. In accordance with SEC Staff Accounting Bulletin No. 98,
the capitalization of Class B Common Stock has been retroactively reflected for
the purposes of presenting earnings per share for the first quarter of 1998. For
the first quarter of 1999, basic EPS reflects the Class B Common Stock plus the
weighted average number of shares of Class A Common Stock and deferred award
units outstanding at March 31, 1999. Corresponding diluted EPS for the first
quarter of 1999 includes an additional 7,347,178 shares representing the
weighted average dilutive effect of outstanding stock options that resulted from
the concurrent cancellation of DuPont stock options at the date of the Offerings
and issuance of options with respect to Class A Common Stock.

     The denominator is based on the following weighted average number of common
shares outstanding:

<TABLE>
<CAPTION>
                                                                THREE MONTHS ENDED
                                                                     MARCH 31
                                                             -------------------------
                                                                1999          1998
                                                             -----------   -----------
<S>                                                          <C>           <C>
Basic......................................................  627,633,168   436,543,573
Diluted....................................................  634,980,346   436,543,573
</TABLE>

     Variable stock options for 1,724,146 shares of common stock were
outstanding at March 31, 1999, but were not included in the computation of
diluted EPS since the threshold price of $32.88 required for these options to be
vested had not been reached.

     Common shares held as treasury stock are deducted in determining the number
of shares outstanding.

     For the three months ended March 31, 1999, stock options for 12,736,261
shares of Class A Common Stock are antidilutive and therefore are not included
in the diluted earnings per share calculation because the exercise price is
greater than the average market price.

PRO FORMA EPS

     Pro forma EPS for the first quarter of 1998 include the shares of Conoco
Class A and Class B Common Stock and deferred award units outstanding
immediately after the Offerings as if the Offerings had been completed at the
beginning of the period presented. Pro forma basic EPS is based on pro forma net
income for the first quarter of 1998 divided by the total Class A and Class B
Common Stock plus deferred award units outstanding immediately after the
Offerings (basic shares). For pro forma diluted EPS, basic shares have been
adjusted to reflect the effect of outstanding stock options immediately after
the Offerings as though outstanding for the period presented. Pro forma net
income reflects historical income for the period adjusted to give effect to the
transactions substantially completed in October 1998 directly associated with
the Offerings and separation from DuPont.

                                      F-52
<PAGE>   207
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

     The reconciliation of historical net income to pro forma net income with
pro forma adjustments separately identified is as follows:

<TABLE>
<CAPTION>
                                                                 THREE MONTHS ENDED
                                                                      MARCH 31
                                                      -----------------------------------------
                                                         1999           1998           1998
                                                        ACTUAL        PRO FORMA       ACTUAL
                                                      -----------    -----------    -----------
<S>                                                   <C>            <C>            <C>
Historical net income...............................  $        83    $       316    $       316
  Lower interest income(1)..........................           --            (32)            --
  Incremental interest expense(2)...................           --            (46)            --
  Related tax effects(3)............................           --             25             --
                                                      -----------    -----------    -----------
Net income..........................................  $        83    $       263    $       316
                                                      ===========    ===========    ===========
Earnings per share:
  Basic.............................................  $       .13    $       .42    $       .72
  Diluted...........................................  $       .13    $       .41    $       .72
Weighted average shares outstanding:
  Basic.............................................  627,633,168    628,195,100    436,543,573
  Diluted...........................................  634,980,346    636,746,186    436,543,573
</TABLE>

- ---------------
(1) Lower interest income due to settlement of related party notes receivable
    and the impact of currency exchange rates on certain intercompany loans
    purchased by Conoco from DuPont.

(2) Incremental interest expense resulting from Conoco's new debt structure.

(3) Tax effects associated with adjustments in (1) and (2), and the impact of
    the calculation of income taxes on a separate return basis.

5. DIVIDENDS

     Conoco declared a first quarter cash dividend on January 27, 1999, of $.14
per share on each outstanding share of Class A common stock and Class B common
stock, payable March 12, 1999, to shareholders of record as of February 12,
1999. This initial dividend was determined on a pro rata basis covering the
period from October 27, 1998 to December 31, 1998, and is equivalent to $.19 per
share for a full quarter.

     On April 28, 1999, Conoco declared a quarterly cash dividend of $.19 per
share on each outstanding share of Class A and Class B common stock, payable on
June 12, 1999, to stockholders of record on May 14, 1999.

6. INVENTORIES

<TABLE>
<CAPTION>
                                                              MARCH 31,   DECEMBER 31,
                                                                1999          1998
                                                              ---------   ------------
<S>                                                           <C>         <C>
Crude oil and petroleum products............................    $757          $661
Other merchandise...........................................      22            22
Materials and supplies......................................     120           124
                                                                ----          ----
                                                                $899          $807
                                                                ====          ====
</TABLE>

                                      F-53
<PAGE>   208
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

7. RESTRUCTURING

     In December 1998, Conoco announced, that as a result of a comprehensive
review of its assets and long-term strategy, Conoco was making organizational
realignments consistent with furthering the efficiency of operations and taking
advantage of synergies created by the upgrading of its asset portfolio. The
announced plans are being implemented in 1999 and will result in a reduction of
approximately 775 Upstream positions and 200 Downstream positions worldwide.
About three quarters of the Upstream positions and about half of the Downstream
positions affected will be in the United States. These reductions largely
reflect the elimination of redundancies at all levels resulting from past and
ongoing consolidation of assets into operations requiring less employee support
as well as better sharing of common services and functions across regions.
Associated with these announcements, Conoco recorded a charge in the fourth
quarter 1998 of $82 pretax ($52 after-tax), nearly all of which represents
termination payments and related employee benefits to be made to persons
affected. During the first quarter, approximately 134 persons in Upstream and 28
persons in Downstream left Conoco under implementation of these realignment
plans. The following table shows the status of, and changes to, the
restructuring reserve for the first quarter of 1999.

<TABLE>
<CAPTION>
                                                          UPSTREAM              DOWNSTREAM
                                                    --------------------   --------------------
                                                    U.S.   INTERNATIONAL   U.S.   INTERNATIONAL   TOTAL
                                                    ----   -------------   ----   -------------   -----
<S>                                                 <C>    <C>             <C>    <C>             <C>
Reserve at December 31, 1998......................  $31         $36         $8         $7          $82
  Expenditures....................................   (3)         (1)        --         --           (4)
  New accruals....................................   --          --         --         --           --
                                                    ---         ---         --         --          ---
Reserve at March 31, 1999.........................  $28         $35         $8         $7          $78
                                                    ===         ===         ==         ==          ===
</TABLE>

     We expect the restructuring efforts provided for in December 1998 will be
completed by year-end 1999.

8. COMMITMENTS AND CONTINGENT LIABILITIES

     Conoco has various purchase commitments for materials, supplies, services
and items of permanent investment incident to the ordinary conduct of business.
In the aggregate, such commitments are not at prices in excess of current
market. In addition, at March 31, 1999, Conoco had obligations under
international contracts to purchase, over periods up to 20 years, natural gas at
prices that were in excess of market prices at March 31, 1999. No material
annual loss is expected from these long-term commitments.

     Conoco is subject to various lawsuits and claims involving a variety of
matters including, along with other oil companies, actions challenging oil and
gas royalty and severance tax payments based on posted prices, and claims for
damages resulting from leaking underground storage tanks. As a result of the
separation agreement with DuPont, Conoco has also assumed responsibility for
current and future claims related to certain discontinued chemicals and
agricultural chemicals businesses operated by Conoco in the past. In general,
the effect on future financial results is not subject to reasonable estimation
because considerable uncertainty exists. Conoco believes the ultimate
liabilities resulting from such lawsuits and claims may be material to results
of operations in the period in which they are recognized but will not materially
affect the consolidated financial position of Conoco.

     Conoco is also subject to contingencies pursuant to environmental laws and
regulations that in the future may require further action to correct the effects
on the environment of prior disposal practices or releases of petroleum
substances by Conoco or other parties. Conoco has accrued for certain
environmental remediation activities consistent with the policy set forth in
Note 2 to the consolidated financial statements presented in Conoco's 1998 Form
10-K as amended. Conoco has assumed environmental remediation

                                      F-54
<PAGE>   209
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

liabilities from DuPont related to certain discontinued chemicals and
agricultural chemicals businesses operated by Conoco in the past, which are
included in the environmental accrual. At March 31, 1999, such accrual amounted
to $130 and, in management's opinion, was appropriate based on existing facts
and circumstances. Under adverse changes in circumstances, potential liability
may exceed amounts accrued. In the event future monitoring and remediation
expenditures are in excess of amounts accrued, they may be significant to
results of operations in the period recognized but management does not
anticipate they will have a material adverse effect on the consolidated
financial position of Conoco.

     Conoco has indirectly guaranteed various debt obligations under agreements
with certain affiliated and other companies to provide specified minimum
revenues from shipments or purchases of products. At March 31, 1999, these
indirect guarantees totaled $18 and Conoco or DuPont, on behalf of and
indemnified by Conoco, had directly guaranteed $1,120 of the obligations of
certain affiliated companies and others. Conoco has a multiparty banking
agreement that provides for the indirect guarantee of bank account overdrafts
for itself and its subsidiaries. No material loss is anticipated by reason of
such agreements and guarantees.

9. COMPREHENSIVE (LOSS) INCOME

     The following sets forth Conoco's comprehensive income (loss) for the
periods shown:

<TABLE>
<CAPTION>
                                                               THREE MONTHS ENDED
                                                                    MARCH 31
                                                               ------------------
                                                                1999        1998
                                                               ------      ------
<S>                                                            <C>         <C>
Net Income..................................................    $ 83        $316
Other Comprehensive Loss:
  Foreign Currency Translation Adjustment...................     (93)        (18)
                                                                ----        ----
Comprehensive (Loss) Income.................................    $(10)       $298
                                                                ====        ====
</TABLE>

                                      F-55
<PAGE>   210
       NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
                    (DOLLARS IN MILLIONS, EXCEPT PER SHARE)
                                  (UNAUDITED)

10. OPERATING SEGMENT AND GEOGRAPHIC INFORMATION

     Conoco is involved in both the Upstream and Downstream operating segments
of the petroleum industry. Activities of the Upstream operating segment include
exploring for, and developing, producing and selling, crude oil, natural gas and
natural gas liquids. Activities of the Downstream operating segment include
refining crude oil and other feedstocks into petroleum products, buying and
selling crude oil and refined products, and transporting, distributing and
marketing petroleum products. Conoco has four reporting segments for its
Upstream and Downstream businesses, reflecting geographic division between the
United States and International. Corporate and other includes general corporate
expenses, financing costs and other non-operating items, and results for
electric power and related-party insurance operations. Conoco sells its products
worldwide. Major products include crude oil, natural gas and refined products
that are sold primarily in the energy and transportation markets. Conoco's sales
are not materially dependent on a single customer or small group of customers.
Transfers between segments are on the basis of estimated market values.

<TABLE>
<CAPTION>
                                             UPSTREAM                DOWNSTREAM
                                      ----------------------   ----------------------
                                      UNITED                   UNITED                   CORPORATE
        SEGMENT INFORMATION           STATES   INTERNATIONAL   STATES   INTERNATIONAL   AND OTHER   CONSOLIDATED
        -------------------           ------   -------------   ------   -------------   ---------   ------------
<S>                                   <C>      <C>             <C>      <C>             <C>         <C>
THREE MONTHS ENDED MARCH 31, 1999
Sales and Other Operating
  Revenues..........................   $706        $479        $1,962      $2,143         $ 21         $5,311
Transfers Between Segments..........     74          79            18          43           --             --
                                       ----        ----        ------      ------         ----         ------
          Total Operating
            Revenues................   $780        $558        $1,980      $2,186         $ 21         $5,311
                                       ====        ====        ======      ======         ====         ======
Net Income (Loss)...................   $ 40        $ 68        $   17      $   23         $(65)        $   83
THREE MONTHS ENDED MARCH 31, 1998
Sales and Other Operating
  Revenues..........................   $863        $456        $2,185      $2,028         $204         $5,736
Transfers Between Segments..........     89         107            21          47           --             --
                                       ----        ----        ------      ------         ----         ------
          Total Operating
            Revenues................   $952        $563        $2,206      $2,075         $204         $5,736
                                       ====        ====        ======      ======         ====         ======
Net Income (Loss)(1)................   $ 88        $143        $   34      $   57         $ (6)        $  316
</TABLE>

- ---------------

(1) Includes After-Tax Benefits from Special Items:

<TABLE>
<S>                                   <C>      <C>             <C>      <C>             <C>         <C>
THREE MONTHS ENDED MARCH 31, 1999...   $ --        $ --        $   --      $   --         $ --         $   --
THREE MONTHS ENDED MARCH 31, 1998
  Asset Sales.......................   $ --        $ 23        $   --      $   --         $ --         $   23
</TABLE>

                                      F-56
<PAGE>   211

                                   SCHEDULE A

                            TRANSACTIONS CONCERNING
                             COMMON STOCK OF DUPONT

     Neither DuPont, nor any of DuPont's executive officers or directors or
associates has engaged in any transaction involving shares of DuPont common
stock during the period of forty business days prior to the date of this
Offering Circular-Prospectus except for the following transactions by certain
executive officers and directors of DuPont:

<TABLE>
<CAPTION>
PERSON
EFFECTING                         DATE OF     NUMBER OF         DESCRIPTION OF          PRICE PER
TRANSACTION                     TRANSACTION    SHARES             TRANSACTION             SHARE
- -----------                     -----------   ---------         --------------          ---------
<S>                            <C>            <C>        <C>                            <C>
Curtis J. Crawford...........  June 14, 1999          7  Dividends applied to deferred     $67.33
  Director                                               directors fees

Edward B. du Pont............  June 17, 1999        200  Gave gift                            N/A
  Director

Richard R. Goodmanson........  June 14, 1999         51  Dividends applied to              $67.75
  Executive Vice President                               restricted stock account
  and Chief Operating Officer
Charles O. Holliday, Jr......  June 14, 1999        106  Dividends applied to              $67.75
  Chairman and Chief                                     restricted stock account
  Executive Officer
                               June 15, 1999         63  Dividends applied to deferred     $67.75
                                                         variable compensation account

Lois D. Juliber..............   June 1, 1999         54  Monthly deferred directors        $64.44
  Director                                               fees
                               June 14, 1999         30  Dividends applied to deferred     $67.31
                                                         directors fees

Kurt M. Landgraf.............  June 14, 1999         15  Dividends applied to              $67.75
  Executive Vice President                               restricted stock account
  and Chief Operating Officer
                               June 15, 1999         30  Dividends applied to deferred     $67.75
                                                         variable compensation account
Stacey J. Mobley.............  June 15, 1999          9  Dividends applied to deferred     $67.75
  Senior Vice President                                  variable compensation account

Gary M. Pfeiffer.............  June 14, 1999          7  Dividends applied to              $67.75
  Senior Vice President                                  restricted stock account
                               June 15, 1999         16  Dividends applied to deferred     $67.75
                                                         variable compensation account
Dennis H. Reilley............  June 14, 1999         17  Dividends applied to deferred     $67.31
  Executive Vice President                               unit account
  and
  Chief Operating Officer      June 14, 1999         19  Dividends applied to              $67.75
                                                         restricted stock account
                               June 15, 1999         23  Dividends applied to deferred     $67.75
                                                         variable compensation account

William K.                      June 1, 1999         51  Monthly deferred directors        $64.44
Reilly.......................                            fees
  Director                     June 14, 1999         49  Dividends applied to deferred     $67.31
                                                         directors fees

Howard J. Rudge..............  June 14, 1999        107  Dividends applied to deferred     $67.75
  Senior Vice President and                              unit account
  General Counsel
                               June 15, 1999         24  Dividends applied to deferred     $67.75
                                                         variable compensation account
</TABLE>

                                       A-1
<PAGE>   212

<TABLE>
<CAPTION>
PERSON
EFFECTING                         DATE OF     NUMBER OF         DESCRIPTION OF          PRICE PER
TRANSACTION                     TRANSACTION    SHARES             TRANSACTION             SHARE
- -----------                     -----------   ---------         --------------          ---------
<S>                            <C>            <C>        <C>                            <C>
Charles M. Vest..............   June 1, 1999         31  Monthly deferred directors        $64.44
  Director                                               fees
                               June 14, 1999         29  Dividends applied to deferred     $67.31
                                                         directors fees

Sanford I. Weill.............  June 14, 1999          7  Dividends applied to deferred     $67.31
  Director                                               directors fees
</TABLE>

     As of June 30, 1999, directors and executive officers of DuPont owned or
held rights to acquire approximately 7.2 million shares of DuPont common stock.
Certain of these persons have indicated to DuPont that they intend to tender an
aggregate of approximately 80,000 shares of DuPont common stock under the
exchange offer as follows:

<TABLE>
<CAPTION>
                                                 APPROXIMATE
NAME                                           NUMBER OF SHARES
- ----                                           ----------------
<S>                                            <C>
Louisa C. Duemling...........................         7,000
  Director
Archie W. Dunham.............................        60,000
  Director
Howard J. Rudge..............................         5,000
  Senior Vice President and General Counsel
H. Rodney Sharp, III.........................         8,000
  Director
</TABLE>

                                       A-2
<PAGE>   213

     Manually signed facsimile copies of the letter of transmittal will be
accepted. The letter of transmittal, certificates for shares of DuPont common
stock and any other required documents should be sent or delivered by each
holder of DuPont common stock or his or her broker, dealer, commercial bank,
trust company or other nominee to the exchange agent at one of the following
addresses:

<TABLE>
<S>                             <C>                             <C>
          If by mail:              If by overnight courier:               If by hand:
  First Chicago Trust Company     First Chicago Trust Company     First Chicago Trust Company
          of New York                     of New York                     of New York
 Attn: Corporate Actions Dept.   Attn: Corporate Actions Dept.    c/o Securities Transfer and
         P.O. Box 2569               8th Floor, Suite 4680          Reporting Service Inc.
          Suite 4660                    14 Wall Street           100 William Street, Galleria
  Jersey City, NJ 07303-2569          New York, NY 10005              New York, NY 10038
</TABLE>

                         If by facsimile transmission:

                        (For eligible institutions only)

                                 (201) 222-4740

                                       or

                                 (201) 222-4721

                         Facsimile confirmation number:

                                 (201) 222-4707

     You may direct any questions and requests for assistance to the information
agent or the dealer manager at their respective addresses and telephone numbers
and locations listed below. Additional copies of this Offering
Circular-Prospectus, the letter of transmittal and other exchange offer material
may be obtained from the information agent or the dealer manager listed below.
You may also contact your broker, dealer, commercial bank or trust company for
assistance concerning the exchange offer.

                The Information Agent for the Exchange Offer is:

                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
                        (800) 755-3105 (Toll-Free) for calls in the United
States
          (212) 269-5550 (Collect) for calls outside the United States

                 The Dealer Manager for the Exchange Offer is:

                           MORGAN STANLEY DEAN WITTER
                       Morgan Stanley & Co. Incorporated
                                 1585 Broadway
                            New York, New York 10036
                                 (212) 761-6531

<PAGE>   1
                                                                  Exhibit (a)(3)
Dupont Logo
                                                                     Dupont Logo

                                                       July 12, 1999

Dear Stockholder,

     I am pleased to announce that E. I. du Pont de Nemours and Company is
commencing an exchange offer in which DuPont stockholders will have an
opportunity to receive 2.95 shares of the Class B common stock of Conoco Inc.
owned by DuPont in exchange for each share of common stock of DuPont, up to an
aggregate of 147,980,872 shares of DuPont common stock. This exchange offer will
allow our stockholders to adjust their investment between DuPont and Conoco on a
tax-free basis.

     The exchange offer is available only to DuPont stockholders who are United
States persons, as explained on page 25 of the Offering Circular-Prospectus.
DuPont stockholders who are not United States persons are ineligible to
participate in the exchange offer. Instead, we will be extending a substantially
concurrent cash offer to purchase DuPont shares from stockholders who are not
United States persons. If you are not a United States person, you should contact
D.F. King & Co., Inc. at the telephone number shown below or your broker for
more information regarding the cash offer. United States persons are not
eligible to participate in the cash offer.

     If more than 147,980,872 shares of DuPont common stock are tendered for
exchange, shares will be accepted for exchange on a pro rata basis, except that
generally any holder with less than 100 DuPont shares who validly tenders all
such shares will not be subject to proration. If less than 147,980,872 shares of
DuPont common stock are exchanged in the exchange offer for shares of Conoco
Class B common stock, and the offer is completed, DuPont may choose from several
alternatives to distribute the remaining Conoco shares. These alternatives
include divesting some or all of the remaining Conoco Class B common stock in a
spin-off, secondary sale or other disposition, or retaining some or all such
remaining Conoco shares.

     The exchange offer will expire, unless extended by DuPont, at midnight, New
York City time, on August 6, 1999. The terms and conditions of the exchange
offer are contained in the enclosed Offering Circular-Prospectus. In addition,
we have prepared a Question and Answer section in the Offering
Circular-Prospectus that responds to commonly asked questions about the exchange
offer.

     Neither DuPont nor the board of directors of DuPont makes any
recommendation as to whether or not to tender shares of DuPont common stock.
Each stockholder must make his or her own decision whether to tender such shares
and, if so, how many shares to tender.

     DuPont has retained the services of D.F. King & Co., Inc. as Information
Agent to assist stockholders in connection with the exchange offer. Requests for
additional documents, questions regarding the terms and conditions of the
exchange offer, or information on the procedure for tendering shares should be
directed to D.F. King at (800) 755-3105 (toll free) in the United States or at
(212) 269-5550 (collect) elsewhere.

     I thank you for your continuing support of our company.

                                          Sincerely,
                                  C.O. Holliday, Jr. signature
                                          Charles O. Holliday, Jr.
                                          Chairman and Chief Executive Officer

E.I. du Pont de Nemours and Company

S

<PAGE>   1
                                                                 Exhibit (a)(4)

     THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME,
              ON FRIDAY, AUGUST 6, 1999, UNLESS OTHERWISE EXTENDED

                             LETTER OF TRANSMITTAL

                  TO ACCOMPANY CERTIFICATES OF COMMON STOCK OF

                      E. I. DU PONT DE NEMOURS AND COMPANY
          TO: FIRST CHICAGO TRUST COMPANY OF NEW YORK, EXCHANGE AGENT
<TABLE>
<S>                                           <C>
                 If by mail:                            If by overnight courier:
         First Chicago Trust Company                   First Chicago Trust Company
                 of New York                                   of New York
        Attn: Corporate Actions Dept.                 Attn: Corporate Actions Dept.
          P.O. Box 2569 Suite 4660                        8th Floor, Suite 4680
         Jersey City, NJ 07303-2569                          14 Wall Street
                                                           New York, NY 10005

<CAPTION>
<S>                                            <C>
                 If by mail:                                    If by hand:
         First Chicago Trust Company                    First Chicago Trust Company
                 of New York                                    of New York
        Attn: Corporate Actions Dept.                   c/o Securities Transfer and
          P.O. Box 2569 Suite 4660                        Reporting Service Inc.
         Jersey City, NJ 07303-2569                    100 William Street, Galleria
                                                            New York, NY 10038
</TABLE>

                The Information Agent for the Exchange Offer is:

                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
           (800) 755-3105 (Toll-Free) for calls in the United States

          (212) 269-5550 (Collect) for calls outside the United States

    The undersigned acknowledges receipt of the Offering Circular-Prospectus
dated July 12, 1999 (the "Offering Circular-Prospectus") of E. I. du Pont de
Nemours and Company, a Delaware corporation ("DuPont"), and this Letter of
Transmittal, which together constitute DuPont's offer (the "Exchange Offer") to
exchange 2.95 shares of Class B common stock, par value $.01 per share of Conoco
Inc. ("Conoco Class B Common Stock"), a Delaware corporation ("Conoco"), for
each share tendered of common stock, par value $.30 per share, of DuPont
("DuPont Common Stock") held by a United States person up to an aggregate of
147,980,872 shares of DuPont Common Stock tendered and exchanged.

    THE EXCHANGE OFFER IS AVAILABLE ONLY TO DUPONT STOCKHOLDERS WHO ARE UNITED
STATES PERSONS, AS EXPLAINED ON PAGE 2.

    DUPONT STOCKHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING THEIR
STATUS AS UNITED STATES PERSONS IN ORDER TO DETERMINE THEIR ELIGIBILITY TO
PARTICIPATE IN THE EXCHANGE OFFER. DUPONT STOCKHOLDERS WHO ARE NOT UNITED STATES
PERSONS ARE INELIGIBLE TO PARTICIPATE IN THE EXCHANGE OFFER AND SHOULD NOT
COMPLETE THIS LETTER OF TRANSMITTAL. If you are not a United States person, you
should contact D.F. King or your broker for more information regarding a
substantially concurrent cash offer being made to non-United States persons by
DuPont. United States persons are not eligible to participate in the cash offer.

    Capitalized terms used but not defined herein have the meanings given to
them in the Offering Circular - Prospectus.

    The undersigned has completed, executed and delivered this Letter of
Transmittal to indicate the action the undersigned desires to take with respect
to the Exchange Offer.

    DELIVERY OF THIS LETTER OF TRANSMITTAL TO A PERSON OTHER THAN THE EXCHANGE
AGENT OR TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE VALID
DELIVERY.

DO NOT COMPLETE OR RETURN THIS LETTER OF TRANSMITTAL IF YOUR SHARES ARE HELD IN
AN ACCOUNT WITH A BROKER, DEALER, COMMERCIAL BANK, TRUST COMPANY, EMPLOYEE
BENEFIT PLAN SPONSORED BY DUPONT OR OTHER NOMINEE AND ARE NOT CERTIFICATED IN
YOUR NAME. THIS LETTER OF TRANSMITTAL IS BEING SUPPLIED FOR YOUR INFORMATION
ONLY. THE INSTITUTION HOLDING YOUR SHARES WILL SUPPLY YOU WITH SEPARATE
INSTRUCTIONS REGARDING THE TENDER OF YOUR SHARES.

    List below the certificate(s) representing shares of DuPont Common Stock
that you wish to tender. If the space provided below is inadequate, the
certificate and number of shares represented thereby should be listed on a
separate signed schedule affixed hereto. The following section should not be
completed by holders tendering by book-entry transfer.

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------
                                   DESCRIPTION OF SHARES OF DUPONT COMMON STOCK TENDERED
- ---------------------------------------------------------------------------------------------------------------------------
                                                                                       TOTAL NUMBER           NUMBER OF
                                                                                       OF SHARES OF           SHARES OF
                                                                                          DUPONT               DUPONT
                  NAME(S) AND ADDRESS(ES)                                              COMMON STOCK            COMMON
                  OF REGISTERED HOLDER(S)                        CERTIFICATE          REPRESENTED BY            STOCK
                 (PLEASE FILL IN, IF BLANK)                       NUMBER(S)           CERTIFICATE(S)         TENDERED(1)
<S>                                                          <C>                  <C>                     <C>
- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------
                                                                 Total Shares
- ---------------------------------------------------------------------------------------------------------------------------
 (1) Unless otherwise indicated in the last column, and subject to the terms and conditions of the Offering
     Circular-Prospectus, you will be deemed to have tendered all the shares of DuPont Common Stock represented by the
     certificate(s) listed. See Instruction 2.
- ---------------------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>   2

     The Exchange Offer is available only to DuPont stockholders who are United
States persons, as explained on page 25 of the Offering Circular-Prospectus. A
United States person for purposes of the Exchange Offer is any person that is:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any state within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

DUPONT STOCKHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING THEIR
STATUS AS UNITED STATES PERSONS IN ORDER TO DETERMINE THEIR ELIGIBILITY TO
PARTICIPATE IN THE EXCHANGE OFFER. DUPONT STOCKHOLDERS WHO ARE NOT UNITED STATES
PERSONS ARE INELIGIBLE TO PARTICIPATE IN THE EXCHANGE OFFER AND SHOULD NOT
COMPLETE THIS LETTER OF TRANSMITTAL. If you are not a United States person, you
should contact D.F. King or your broker for more information regarding a
substantially concurrent cash offer being made to non-United States persons by
DuPont. United States persons are not eligible to participate in the cash offer.

LADIES AND GENTLEMEN:

     Reference is made to the Offering Circular-Prospectus dated July 12, 1999,
of E. I. du Pont de Nemours and Company ("DuPont" or "you"), and this Letter of
Transmittal which together constitute DuPont's offer (the "Exchange Offer") to
exchange up to 436,543,573 shares of Class B common stock, par value $.01 per
share (the "Conoco Class B Common Stock"), of Conoco Inc. ("Conoco"), for shares
of common stock, par value $.30 per share (the "DuPont Common Stock"), of DuPont
held by United States persons that are validly tendered by the Expiration Date
and not withdrawn or deemed withdrawn, at an exchange ratio of 2.95 shares of
Conoco Class B Common Stock for each share of DuPont Common Stock tendered, upon
the terms and subject to the conditions set forth herein and in the Offering
Circular-Prospectus. The Conoco Class A common stock, par value $.01 per share
("Conoco Class A Common Stock") currently trading on the New York Stock Exchange
under the symbol "COC," together with the Conoco Class B Common Stock,
constitute the Conoco common stock ("Conoco Common Stock"). See "Summary," "The
Transaction" and "The Exchange Offer" in the Offering Circular-Prospectus.

     The Exchange Offer, proration period and withdrawal rights will expire at
12:00 Midnight, New York City time, on August 6, 1999 (the "Expiration Date"),
unless extended in accordance with applicable law and the terms of the Exchange
Offer, in which event the term "Expiration Date" shall mean the latest time and
date at which the Exchange Offer, as extended, shall expire.

     Upon the terms and subject to the conditions of the Exchange Offer, I
hereby tender to you the shares of DuPont Common Stock represented by the
certificate(s) described above. Subject to, and effective upon, the acceptance
for exchange of such tendered shares of DuPont Common Stock, I hereby sell,
assign and transfer to you, or upon your order, all right, title and interest in
and to such shares. I hereby irrevocably constitute and appoint First Chicago
Trust Company of New York (the "Exchange Agent") as my true and lawful agent and
attorney-in-fact (with full knowledge that the Exchange Agent also acts as your
agent) with respect to such tendered shares of DuPont Common Stock, with full
power of substitution (such power of attorney being deemed to be an irrevocable
power coupled with an interest):

     (1) to deliver stock certificates representing such tendered shares of
         DuPont Common Stock or transfer ownership of such shares on the account
         books maintained by The Depository Trust Company (the "Book-Entry
         Transfer Facility"), together, in any such case, with all accompanying
         evidences of transfer and authenticity, to you or upon your order, upon
         receipt by the Exchange Agent, as my agent, of shares of Conoco Class B
         Common Stock, to which I am entitled upon the acceptance for exchange
         by you of such tendered shares of DuPont Common Stock;

                                        2
<PAGE>   3

     (2) to present certificate(s) representing such tendered shares of DuPont
         Common Stock for transfer on your books; and

     (3) to receive all benefits and otherwise exercise all rights of beneficial
         ownership of such shares, all in accordance with the terms of the
         Exchange Offer. If my tendered shares of DuPont Common Stock are
         accepted for exchange, I will be entitled to receive book-entry credit
         representing shares of Conoco Class B Common Stock.

     I hereby represent and warrant to you that I am a United States person for
purposes of the Exchange Offer.

     I hereby represent and warrant to you that I have full power and authority
to tender, sell, assign and transfer the shares of DuPont Common Stock that I
have tendered and that when such shares are accepted by you for exchange
pursuant to the Exchange Offer, you will acquire good, marketable and
unencumbered title thereto, free and clear of all liens, restrictions, charges
and encumbrances, and that none of such shares of DuPont Common Stock will be
subject to any adverse claim when you accept such shares for exchange. I will,
upon request, execute and deliver any additional documents deemed by the
Exchange Agent or you to be necessary or desirable to complete the sale,
assignment and transfer of the shares of DuPont Common Stock that I have
tendered. All authority conferred or agreed to be conferred in this Letter of
Transmittal and all of my obligations hereunder shall be binding upon my
successors, assigns, heirs, executors, administrators, trustees in bankruptcy
and legal representatives and shall not be affected by, and shall survive, my
death or incapacity. This tender may be withdrawn only in accordance with the
procedures set forth in the Offering Circular-Prospectus and the instructions
contained in this Letter of Transmittal.

     I understand that the maximum number of shares of DuPont Common Stock which
will be accepted for exchange will be that number of shares which, when
multiplied by the exchange ratio, equals 436,543,573 shares of Conoco Class B
Common Stock. I understand that if more than such maximum number of shares of
DuPont Common Stock are tendered at the exchange ratio, the Exchange Offer will
be oversubscribed, and shares of DuPont Common Stock tendered at the exchange
ratio will be subject to proration in accordance with the terms set forth in the
Offering Circular-Prospectus under "The Exchange Offer -- Terms of the Exchange
Offer," except for odd lot tenders as described in the Offering
Circular-Prospectus under "The Exchange Offer -- Proration; Tenders for Exchange
by Holders of Fewer Than 100 Shares of DuPont Common Stock." I understand that,
upon acceptance by you of the shares of DuPont Common Stock that I have
tendered, I will be deemed to have accepted the shares of Conoco Class B Common
Stock exchanged therefor and will be deemed to have relinquished all rights with
respect to the accepted shares of DuPont Common Stock.

     I recognize that, under certain circumstances and subject to certain
conditions to the Exchange Offer (which you may waive) set forth in the Offering
Circular-Prospectus, you may not be required to accept for exchange any of the
shares of DuPont Common Stock that I have tendered (including any shares of
DuPont Common Stock tendered after the Expiration Date). This tender may be
withdrawn only in accordance with the procedures set forth in the Offering
Circular-Prospectus under "The Exchange Offer -- Withdrawal Rights" and in the
instructions contained in this Letter of Transmittal. Shares of DuPont Common
Stock delivered to the Exchange Agent and not accepted for exchange will be
credited to me and a confirmation will be mailed to me as promptly as
practicable following expiration or termination of the Exchange Offer at the
address set forth in this Letter of Transmittal under "Description of Shares of
DuPont Common Stock Tendered" (Page 1) unless otherwise indicated under "Special
Delivery Instructions" (Section III).

     Unless otherwise indicated under "Special Issuance Instructions" (Section
II), please credit (1) the shares of Conoco Class B Common Stock to which I am
entitled, and (2) if applicable, the shares of DuPont Common Stock not tendered
by me or any tendered shares that are not accepted for exchange, in each case in
the name(s) of the registered holder(s) shown in this Letter of Transmittal
under "Description of Shares of DuPont Common Stock Tendered" (page 1). Unless
otherwise indicated in the Section entitled "Special Delivery Instructions"
(Section III), please mail (1) the confirmation of shares of Conoco Class B
Common Stock to which I am entitled, and (2) if applicable, the confirmation of
shares of DuPont Common Stock not tendered by me or any shares tendered by me or
any shares tendered herewith and not accepted for exchange by you, in each case
to the address(es) of the registered holder(s) shown on the cover page of this
Letter of Transmittal under "Description of Shares of DuPont Common Stock
Tendered" (page 1). If Section II and Section III entitled "Special Issuance
Instructions" and "Special Delivery Instructions" are both completed, please
credit (1) the shares of Conoco Class B Common Stock to which I am entitled, and
(2) if applicable, the shares of DuPont Common Stock not tendered by me or any
tendered shares that are not accepted for exchange, in each case in the name(s)
of, and mail such confirmation (and accompanying documents, as appropriate) to,
the person(s) so indicated. Any shares of DuPont Common Stock delivered by
book-entry transfer that are not tendered

                                        3
<PAGE>   4

or any shares tendered herewith that are delivered by book-entry transfer and
are not accepted for exchange will be credited to the account at the Book-Entry
Transfer Facility. I recognize that you have no obligation pursuant to the
"Special Issuance Instructions" to transfer any shares of DuPont Common Stock
from the name of the registered holder(s) hereof if you do not accept for
exchange such shares.

     I understand that the delivery and surrender of the shares of DuPont Common
Stock that I have tendered is not effective, and the risk of loss of the shares
of DuPont Common Stock (including shares of DuPont Common Stock tendered
herewith) does not pass to the Exchange Agent, until receipt by the Exchange
Agent of this Letter of Transmittal, (or a manually signed facsimile), duly
completed and signed, or an agent's message (as defined in the Offering
Circular-Prospectus under "The Exchange Offer -- Procedures for Tendering DuPont
Shares") in connection with a book-entry transfer of shares, together with all
accompanying evidences of authority in form satisfactory to you and any other
required documents. Holders of shares of DuPont Common Stock are referred to
herein as "stockholders." ALL QUESTIONS AS TO THE FORM OF DOCUMENTS (INCLUDING
NOTICES OF WITHDRAWAL) AND THE VALIDITY, FORM, ELIGIBILITY (INCLUDING TIME OF
RECEIPT) AND ACCEPTANCE FOR EXCHANGE OF ANY TENDER OF SHARES OF DUPONT COMMON
STOCK WILL BE DETERMINED BY YOU IN YOUR SOLE DISCRETION AND SUCH DETERMINATION
SHALL BE FINAL AND BINDING UPON ALL TENDERING HOLDERS OF DUPONT COMMON STOCK.

     I understand that a tender of shares of DuPont Common Stock made pursuant
to any method of delivery set forth in the Offering Circular-Prospectus and your
acceptance for exchange of such shares pursuant to the procedures described in
the Offering Circular-Prospectus under "The Exchange Offer -- Procedures for
Tendering DuPont Shares" and in the Instructions hereto will constitute a
binding agreement between us upon the terms and subject to the conditions of the
Exchange Offer, including my representation that (1) I own the shares of DuPont
Common Stock being tendered within the meaning of Rule 14e-4 promulgated under
the Securities Exchange Act of 1934, as amended, and (2) the tender of such
shares of DuPont Common Stock complies with Rule 14e-4.

                                        4
<PAGE>   5

                 PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL
                    CAREFULLY BEFORE CHECKING ANY BOX BELOW

     This Letter of Transmittal is to be used if (1) certificate(s) representing
shares of DuPont Common Stock are to be forwarded along with this letter, (2)
tenders are to be made by book-entry transfer to the account maintained by the
Exchange Agent at The Depository Trust Company unless an agent's message is
utilized, or (3) guaranteed delivery procedures are being used, according to the
procedures set forth in the Offering Circular-Prospectus under "The Exchange
Offer -- Guaranteed Delivery Procedure." Delivery of documents to The Depository
Trust Company does not constitute delivery to the Exchange Agent.

     THIS LETTER OF TRANSMITTAL IS TO BE COMPLETED ONLY BY UNITED STATES
PERSONS. PERSONS WHO ARE NOT UNITED STATES PERSONS CANNOT PARTICIPATE IN THE
EXCHANGE OFFER.

     Your broker can assist you in completing this form. The instructions
included with this Letter of Transmittal must be followed. Questions and
requests for assistance or for additional copies of the Offering
Circular-Prospectus, this Letter of Transmittal and the Notice of Guaranteed
Delivery may be directed to D.F. King & Co., Inc. (the "Information Agent") at
(800) 755-3105 (toll free) in the United States or at (212) 269-5550 (collect)
elsewhere. See Instruction 12.

IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE COPY
           HEREOF, (TOGETHER WITH SHARES OF DUPONT COMMON STOCK AND ALL OTHER
           REQUIRED DOCUMENTS) OR A NOTICE OF GUARANTEED DELIVERY MUST BE
           RECEIVED ON OR PRIOR TO THE EXPIRATION DATE (AS DEFINED IN THE
           OFFERING CIRCULAR-PROSPECTUS).

I.  TENDER OF CERTIFICATED SHARES ISSUED IN YOUR NAME.

     If you are tendering shares of DuPont Common Stock pursuant to this Section
I, you must also complete Section IV.

      A.   CERTIFICATED SHARES -- Complete this Section I.A. if you wish to
           tender certificated shares issued in your name.

BY COMPLETING THIS SECTION I.A. AND SECTION V.A., SIGNING THIS LETTER OF
TRANSMITTAL AND DELIVERING THIS LETTER OF TRANSMITTAL AND THE CERTIFICATE(S) FOR
DUPONT COMMON STOCK TO THE EXCHANGE AGENT, YOU WILL BE DEEMED TO HAVE TENDERED
THE SHARES OF DUPONT COMMON STOCK INDICATED BELOW.

     If you wish to tender your shares of DuPont Common Stock but the shares are
not immediately available or you cannot deliver your shares of DuPont Common
Stock and all other documents required hereby to the Exchange Agent on or before
the Expiration Date, you must tender your shares of DuPont Common Stock
according to the guaranteed delivery procedures set forth in the Offering
Circular-Prospectus under the caption "The Exchange Offer -- Guaranteed Delivery
Procedure." See Instruction 1.

[ ]  CHECK HERE IF THE CERTIFICATE(S) REPRESENTING TENDERED SHARES OF DUPONT
     COMMON STOCK ARE ENCLOSED WITH THIS LETTER OF TRANSMITTAL.

[ ]  CHECK HERE IF TENDERED SHARES OF DUPONT COMMON STOCK ARE BEING DELIVERED
     PURSUANT TO A NOTICE OF GUARANTEED DELIVERY PREVIOUSLY SUBMITTED AND
     COMPLETE THE FOLLOWING:

     Name(s) of registered holder(s):

     Date of execution of notice of guaranteed delivery:

     Name of institution that guaranteed delivery:

- --------------------------------------------------------------------------------

                                        5
<PAGE>   6

      B.   DIVIDEND REINVESTMENT PLAN SHARES -- Complete this Section I.B. if
           you wish to tender shares held in the Dividend Reinvestment Plan.

BY COMPLETING THIS SECTION I.B. AND SIGNING AND DELIVERING THIS LETTER OF
TRANSMITTAL TO THE EXCHANGE AGENT, YOU WILL BE DEEMED TO HAVE TENDERED THE
SHARES OF DUPONT COMMON STOCK INDICATED BELOW.

[ ]  CHECK HERE IF YOU ARE A PARTICIPANT IN DUPONT'S DIVIDEND REINVESTMENT PLAN
     AND WISH TO TENDER SHARES OF DUPONT COMMON STOCK HELD IN YOUR ACCOUNT UNDER
     THE DIVIDEND REINVESTMENT PLAN AND COMPLETE THE FOLLOWING:

        [ ]  Tender all Dividend Reinvestment Plan shares; or

        [ ]  Number of Whole and Fractional Shares Tendered From Dividend
        Reinvestment Plan
         (if less than all):
         ---------------------------------------.

        A tender of all Dividend Reinvestment Plan shares will include
        fractional shares and any shares credited to the participant's account
        after the date hereof and prior to the Expiration Date.

IF THE PARTICIPANT AUTHORIZES THE TENDER OF HIS OR HER DIVIDEND REINVESTMENT
PLAN SHARES, BUT DOES NOT INDICATE THE NUMBER OF SHARES TO BE TENDERED, THE
PARTICIPANT WILL BE DEEMED TO HAVE TENDERED ALL DIVIDEND REINVESTMENT PLAN
SHARES OWNED BY SUCH PARTICIPANT, PURSUANT TO THE DIVIDEND REINVESTMENT PLAN.
SEE INSTRUCTION 5.

- --------------------------------------------------------------------------------

     C.   ODD-LOT SHARES -- Complete this Section I.C. if you hold less than 100
          shares and wish to tender all such shares.

[ ]  CHECK HERE IF (1) YOU WERE THE OWNER BENEFICIALLY AND OF RECORD OF LESS
     THAN 100 SHARES OF DUPONT COMMON STOCK IN THE AGGREGATE AS OF JULY 7, 1999
     AND (2) YOU WISH TO TENDER ALL YOUR SHARES OF DUPONT COMMON STOCK.

If you are the owner, beneficially and of record, of less than 100 shares of
DuPont Common Stock (an "Odd-Lot") and you tender all your shares, you will
receive preferential treatment if the Exchange Offer is oversubscribed. DuPont
shares you hold in a DuPont or DuPont affiliated company savings plan (including
Conoco plans) are not eligible for this preferential treatment. However, DuPont
shares you hold in a Blueprint account at Merrill Lynch are eligible for this
preferential treatment. If your Odd-Lot shares are held by a broker for your
account, you should contact the broker and request the preferential treatment.
See Instruction 8.

                                        6
<PAGE>   7

II.  SPECIAL ISSUANCE INSTRUCTIONS -- Complete this Section II ONLY if you want
shares of Conoco Class B Common Stock and/or shares of DuPont Common Stock that
are tendered but not accepted for exchange to be credited in the name of someone
other than the stockholder.

Note: If this Section is completed, the signature in Section IV must be
guaranteed by an Eligible Institution.

          ------------------------------------------------------------

                         SPECIAL ISSUANCE INSTRUCTIONS
                           (SEE INSTRUCTIONS 3 AND 4)

        To be completed ONLY if shares of Conoco Class B Common Stock and/or
   shares of DuPont Common Stock not accepted for exchange, if any, are to be
   CREDITED in the name of someone other than the undersigned.

   Issue:

   check appropriate box(es):

   [ ] all of the following to:
   [ ] Conoco Class B Common Stock to:
   [ ] DuPont Common Stock to:

   Name(s):
   ------------------------------------------------
                                 (PLEASE PRINT)

   ------------------------------------------------------------
                                 (PLEASE PRINT)

   Address:
   --------------------------------------------------

          ------------------------------------------------------------
                                    ZIP CODE

          ------------------------------------------------------------
                           EMPLOYER IDENTIFICATION OR
                              SOCIAL SECURITY NO.

                 (ALSO COMPLETE SUBSTITUTE FORM W-9 ON PAGE 9)

          ------------------------------------------------------------

III  SPECIAL DELIVERY INSTRUCTIONS -- Complete this Section III ONLY if you want
confirmation of shares of Conoco Class B Common Stock and/or confirmation of
shares of DuPont Common Stock to be mailed to an address other than the one
shown in the box entitled "Description of Shares of DuPont Common Stock
Tendered" or in Section II on this page.

          ------------------------------------------------------------

                         SPECIAL DELIVERY INSTRUCTIONS
                           (SEE INSTRUCTIONS 3 AND 4)

        To be completed ONLY if confirmation of shares of Conoco Class B
   Common Stock and/or confirmation of shares of DuPont Common Stock not
   tendered or any shares of DuPont Common Stock tendered but not accepted
   for exchange, if any, are to be MAILED to someone other than the
   undersigned, or to the undersigned at an address other than that shown in
   the box entitled "Description of Shares of DuPont Common Stock Tendered"
   or in Section II on this page, as applicable.

   Mail:

   check appropriate boxes(es):

   [ ] Confirmation of Conoco Class B Common Stock to:
   [ ] Confirmation of DuPont Common Stock to:
   [ ] Not Tendered to:
   [ ] Not Accepted to:

   Name(s):
   -------------------------------------------------
                                 (PLEASE PRINT)

          ------------------------------------------------------------
                                 (PLEASE PRINT)

   Address:
   --------------------------------------------------

          ------------------------------------------------------------
                                    ZIP CODE

          ------------------------------------------------------------

                                        7
<PAGE>   8

IV.  SIGNATURE -- Complete this Section IV if you are tendering shares of DuPont
     Common Stock and you completed Sections I.A., I.B. or I.C.

                    NOTE:  SIGNATURES MUST BE PROVIDED BELOW

                                   IMPORTANT
                  ALL TENDERING STOCKHOLDERS PLEASE SIGN HERE
           (PLEASE ALSO COMPLETE THE SUBSTITUTE FORM W-9 ON PAGE 9.)
                           (SEE INSTRUCTIONS 1 AND 3)
BY SIGNING BELOW, (i) I AM CERTIFYING THAT I AM A UNITED STATES PERSON AS
DEFINED ON PAGE 2 OF THIS LETTER OF TRANSMITTAL AND ON PAGE 25 OF THE OFFERING
CIRCULAR -- PROSPECTUS AND THAT I AM ELIGIBLE TO PARTICIPATE IN THIS EXCHANGE
OFFER, AND (ii) IF I AM TENDERING SHARES ON BEHALF OF A BENEFICIAL OWNER, TO THE
BEST OF MY KNOWLEDGE, SUCH PERSON IS A UNITED STATES PERSON, AS SO DEFINED, AND
ELIGIBLE TO PARTICIPATE IN THIS EXCHANGE OFFER.

X
- --------------------------------------------------------------------------------

X
- --------------------------------------------------------------------------------
                          (SIGNATURE(S) OF OWNERS(S))

Dated:
- --------------------------- , 1999

(Must be signed by the registered holder(s) of shares of DuPont Common Stock as
their name(s) appear(s) on certificate(s) for shares of DuPont Common Stock or
on a security position listing or by person(s) authorized to become registered
holder(s) by endorsements and documents transmitted with this Letter of
Transmittal.)

If signature is by a trustee, executor, administrator, guardian,
attorney-in-fact, officer or other person acting in a fiduciary or
representative capacity, please set forth full title. (See Instruction 3.)

Name(s):------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                                 (PLEASE PRINT)

Capacity:
        ------------------------------------------------------------------------

Address:
       -------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Daytime Area Code and Telephone No.:
                              --------------------------------------------------

Dated:
- --------------------------- , 1999

                              SIGNATURE GUARANTEE
                   (IF REQUIRED -- SEE INSTRUCTIONS 1 AND 3)

                     FOR USE BY ELIGIBLE INSTITUTIONS ONLY.
                   PLACE MEDALLION GUARANTEE IN SPACE BELOW.

Signature(s) Guaranteed by an Eligible Institution:
                                      ------------------------------------------
                                                (AUTHORIZED SIGNATURE)

Name: --------------------------------------------------------------------------
                                 (PLEASE PRINT)

Title:
     ---------------------------------------------------------------------------
Name of Firm:
           ---------------------------------------------------------------------
Address:
       -------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

                                                                          DATED:
                                              --------------------------- , 1999

Area Code and Telephone No.:
                        --------------------------------------------------------

                                        8
<PAGE>   9

     All tendering stockholders: must complete the Substitute Form W-9 below. If
a person other the tendering stockholder has been named in Section II, such
other person, rather than the person tendering the shares of DuPont Common
Stock, must complete the following Substitute Form W-9. See Instruction 4 and
the enclosed Guidelines for Certification of Taxpayer Identification Number on
Substitute Form W-9.

<TABLE>
<S>                                     <C>                                     <C>
- -----------------------------------------------------------------------------------------------------------------------
PAYER'S NAME: FIRST CHICAGO TRUST COMPANY OF NEW YORK
- -----------------------------------------------------------------------------------------------------------------------
PAYER'S REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION
- -----------------------------------------------------------------------------------------------------------------------
 SUBSTITUTE                              PLEASE PROVIDE YOUR TAXPAYER           ---------------------------------
 FORM W-9                                IDENTIFICATION NUMBER IN THE BOX AT     (Social Security No.
 DEPARTMENT OF THE TREASURY              RIGHT AND CERTIFY BY SIGNING AND        or Employer
 INTERNAL REVENUE SERVICE                DATING BELOW.                           Identification No.)
                                        ------------------------------------------------------------------------------
 PAYER'S REQUEST FOR TAXPAYER            Please check the box at right if you have applied for and are awaiting receipt
 IDENTIFICATION NUMBER AND               of your taxpayer identification number. [ ]
 CERTIFICATION FOR PAYEES EXEMPT FROM
 BACKUP WITHHOLDING (SEE GUIDELINES FOR
 CERTIFICATION OF TAXPAYER IDENTIFI-
 CATION NUMBER ON SUBSTITUTE FORM W-9)
- -----------------------------------------------------------------------------------------------------------------------
 CERTIFICATION -- Under penalties of perjury, I certify that:
 (1) The number shown on this form is my correct Taxpayer Identification Number (or I am waiting for a Taxpayer
     Identification Number to be issued to me) and
 (2) I am not subject to backup withholding either because I have not been notified by the Internal Revenue Service
     ("IRS") that I am subject to backup withholding as a result of a failure to report all interest or dividends, or
     the IRS has notified me that I am no longer subject to backup withholding.
 You must cross out item (2) above if you have been notified by the IRS you are subject to backup withholding because
 of underreporting interest or dividends on your tax return. However, if after being notified by the IRS that you were
 subject to backup withholding you received another notification from the IRS that you are no longer subject to backup
 withholding, do not cross out item (2).
</TABLE>

 PRINT YOUR NAME:
 ------------------------------------------------------------------------------

 ADDRESS:
 ------------------------------------------------------------------------------

 SIGNATURE:  ___________________________________________  DATE:
- --------------------------------------------------------------------------------

IF YOU CHECKED THE BOX ABOVE ON THIS SUBSTITUTE FORM W-9 INDICATING THAT YOU ARE
AWAITING RECEIPT OF YOUR TAXPAYER IDENTIFICATION NUMBER, YOU MUST SIGN AND DATE
THE FOLLOWING CERTIFICATION:

         CERTIFICATION OF PAYEE AWAITING TAXPAYER IDENTIFICATION NUMBER

     I certify under penalties of perjury, that a Taxpayer Identification Number
has not been issued to me, and that I mailed or delivered an application to
receive a Taxpayer Identification Number to the appropriate IRS Center or Social
Security Administration Office (or I intend to mail or deliver an application in
the near future). I understand that if I do not provide a Taxpayer
Identification Number within 60 days, 31% of all reportable payments made to me
thereafter will be withheld until I provide a number.

SIGNATURE:
- -------------------------------------------------------------------------------

DATE:
- -------------------------------------------------------------------------------

NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
OF 31% ON ANY DIVIDENDS OR OTHER TAXABLE PAYMENTS MADE TO YOU PURSUANT TO THE
EXCHANGE OFFER. FOR ADDITIONAL DETAILS, PLEASE REVIEW THE ENCLOSED GUIDELINES
FOR CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9.

                                        9
<PAGE>   10

V.  TENDER OF SHARES HELD BY A BROKER, DEALER, COMMERCIAL BANK, TRUST COMPANY,
    EMPLOYEE BENEFIT PLAN SPONSORED BY DUPONT (OR A SUBSIDIARY) OR OTHER
    NOMINEE.

     If your shares of DuPont Common Stock are held in an account with a broker,
dealer, commercial bank, trust company, employee benefit plans sponsored by
DuPont (or a subsidiary) or other nominee and you wish to tender all or part of
those shares, do not return this Letter of Transmittal to the Exchange Agent.
This Letter of Transmittal is being supplied for your information only. The
institution holding your shares will supply you with separate instructions
regarding the tender of your shares. If you have not received instructions
regarding the tender of your shares, please contact a representative of the
institution holding your shares.

ONLY BROKERS, DEALERS, COMMERCIAL BANKS, TRUST COMPANIES, TRUSTEES OF EMPLOYEE
BENEFIT PLANS SPONSORED BY DUPONT (OR A SUBSIDIARY) AND OTHER NOMINEES SHOULD
COMPLETE THIS SECTION V.

      A.   BOOK-ENTRY TRANSFER SHARES -- Complete this Section V.A. if you wish
           to tender shares held by The Depository Trust Company.

[ ]  CHECK HERE IF TENDERED SHARES OF DUPONT COMMON STOCK ARE BEING DELIVERED BY
     BOOK-ENTRY TRANSFER MADE TO AN ACCOUNT MAINTAINED BY THE EXCHANGE AGENT
     WITH THE DEPOSITORY TRUST COMPANY AND COMPLETE THE FOLLOWING:

     Name of Tendering Institution:

     The Depository Trust Company Account Number:

     Transaction Code Number:

[ ]  CHECK HERE IF TENDERED SHARES OF DUPONT COMMON STOCK ARE BEING DELIVERED
     PURSUANT TO A NOTICE OF GUARANTEED DELIVERY PREVIOUSLY SUBMITTED AND
     COMPLETE THE FOLLOWING:

     Date of Execution of Notice of Guaranteed Delivery:

     Name of Institution that Guaranteed Delivery:

    ----------------------------------------------------------------------------

      B.   ODD-LOT SHARES -- Complete this Section V.B. if you wish to tender on
           behalf of an owner of an odd lot.

     If delivered by Book-Entry Transfer, the Depository Trust Company Account
Number: .

[ ]  CHECK HERE IF (1) YOU ARE TENDERING ON BEHALF OF THE OWNER BENEFICIALLY AND
     OF RECORD OF AN ODD-LOT, (2) YOU BELIEVE, BASED UPON REPRESENTATIONS MADE
     TO YOU BY SUCH OWNER, THAT SUCH OWNER OWNED BENEFICIALLY AND OF RECORD LESS
     THAN 100 SHARES OF DUPONT COMMON STOCK IN THE AGGREGATE AS OF JULY 7, 1999,
     AND (3) SUCH OWNER WISHES TO TENDER ALL HIS OR HER SHARES OF DUPONT COMMON
     STOCK.

If you are the owner, beneficially and of record, of an Odd-Lot and you tender
all your shares of DuPont Common Stock, you will receive preferential treatment
if the Exchange Offer is oversubscribed. DuPont shares you hold in a DuPont or
DuPont affiliated company savings plan (including Conoco plans) are not eligible
for this preferential treatment. However, DuPont shares you hold in a Blueprint
account at Merrill Lynch are eligible for this preferential treatment. If your
Odd-Lot shares are held by a broker for your account, you should contact the
broker and request the preferential treatment. See Instruction 8.

                                       10
<PAGE>   11

VI.  NOTICE OF SOLICITED TENDERS -- THIS SECTION VI MUST BE COMPLETED ONLY IF A
     SOLICITING DEALER FEE IS TO BE PAID IN CONNECTION WITH THIS TENDER.

                          NOTICE OF SOLICITED TENDERS

     DuPont will pay to a soliciting dealer, as defined in the Offering
Circular-Prospectus, a solicitation fee of $0.75 per share, up to a maximum of
1,000 shares per tendering stockholder, for each share of DuPont Common Stock
tendered and accepted for exchange pursuant to the Exchange Offer if such
soliciting dealer has affirmatively solicited and obtained such tender, except
that no solicitation fee shall be payable in connection with a tender of DuPont
Common Stock by a stockholder (a) tendering more than 10,000 shares of DuPont
Common Stock or (b) tendering from a country outside the United States. In
addition, no such fee shall be payable to a soliciting dealer if such soliciting
dealer is required for any reason to transfer the amount of such fee to a
tendering holder (other than itself). No broker, dealer, bank, trust company or
fiduciary shall be deemed to be the agent of DuPont, Conoco, First Chicago Trust
Company of New York, D.F. King & Co., Inc. or Morgan Stanley & Co. Incorporated
for purposes of the Exchange Offer. See Instruction 9.

                          FOR REGISTERED HOLDERS ONLY
                               SOLICITED TENDERS
The undersigned represents that the Soliciting Dealer who solicited and obtained
this tender is:
Name of Firm: ..................................................................
                                 (PLEASE PRINT)

Name of Individual Broker
or Financial Consultant: .......................................................

Identification Number (if known): ..............................................

Address: .......................................................................
 ................................................................................
                               (INCLUDE ZIP CODE)

                                   SIGN HERE
x  ........................................   x  ...............................

x  ........................................   x  ...............................
                        SIGNATURE(S)                                       PRINT
NAME(S) AND ADDRESS(ES) HERE

Date   ........................................    Phone
Number  ................................

     The acceptance of compensation by such soliciting dealer will constitute a
representation by it that: (1) it has complied with the applicable requirements
of the Securities Exchange Act of 1934, as amended, and the applicable rules and
regulations thereunder, in connection with such solicitation; (2) it is entitled
to such compensation for such solicitation under the terms and conditions of the
Offering Circular-Prospectus; and (3) in soliciting tenders of shares of DuPont
Common Stock, it has used no soliciting materials other than those furnished by
DuPont.

                                       11
<PAGE>   12

                                  INSTRUCTIONS

         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

1.  Delivery of this Letter of Transmittal and DuPont Common Stock
    Certificate(s) or Book-Entry Confirmations

     This Letter of Transmittal is to be completed by stockholders who are
United States persons if either (1) the certificate(s) representing shares of
DuPont Common Stock tendered herewith are to be forwarded herewith or, unless an
agent's message is utilized, if tenders are to be made pursuant to the
procedures for book-entry transfer set forth in the Offering
Circular -- Prospectus under "The Exchange Offer -- Procedures for Tendering
DuPont Shares" or (2) the shares of DuPont Common Stock will be tendered
pursuant to the guaranteed delivery procedures set forth in the Offering
Circular-Prospectus under "The Exchange Offer -- Guaranteed Delivery Procedure."
The certificate(s) representing shares of DuPont Common Stock tendered herewith,
or confirmation of any book-entry transfer into the Exchange Agent's account at
the Book-Entry Transfer Facility of shares of DuPont Common Stock tendered
electronically, as well as a properly completed and duly executed copy of this
Letter of Transmittal or a manually signed facsimile copy hereof, or an agent's
message, in connection with the book-entry transfer of shares, and any other
documents required by this Letter of Transmittal, must be received by the
Exchange Agent at one of its addresses set forth herein prior to the Expiration
Date. THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, THE CERTIFICATE(S)
REPRESENTING SHARES OF DUPONT COMMON STOCK TENDERED HEREWITH AND ANY OTHER
REQUIRED DOCUMENTS IS AT THE OPTION AND RISK OF THE TENDERING STOCKHOLDER, BUT,
EXCEPT AS OTHERWISE PROVIDED BELOW, THE DELIVERY WILL BE DEEMED MADE ONLY WHEN
ACTUALLY RECEIVED OR CONFIRMED BY THE EXCHANGE AGENT. IF CERTIFICATE(S)
REPRESENTING SHARES OF DUPONT COMMON STOCK TENDERED HEREWITH ARE SENT BY MAIL IT
IS RECOMMENDED THAT TENDERING STOCKHOLDERS USE REGISTERED MAIL, RETURN RECEIPT
REQUESTED AND ALLOW SUFFICIENT TIME TO ENSURE TIMELY RECEIPT BY THE EXPIRATION
DATE.

     THE EXCHANGE OFFER IS AVAILABLE ONLY TO DUPONT STOCKHOLDERS WHO ARE UNITED
STATES PERSONS, AS EXPLAINED ON PAGE 25 OF THE OFFERING CIRCULAR-PROSPECTUS. A
United States person for purposes of the Exchange Offer is any person that is:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any State within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

DUPONT STOCKHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING THEIR
STATUS AS UNITED STATES PERSONS IN ORDER TO DETERMINE THEIR ELIGIBILITY TO
PARTICIPATE IN THE EXCHANGE OFFER. DUPONT STOCKHOLDERS WHO ARE NOT UNITED STATES
PERSONS ARE INELIGIBLE TO PARTICIPATE IN THE EXCHANGE OFFER AND SHOULD NOT
COMPLETE THIS LETTER OF TRANSMITTAL. If you are not a United States person, you
should contact D.F. King or your broker for more information regarding a
substantially concurrent cash offer being made to non-United States persons by
DuPont. United States persons are not eligible to participate in the cash offer.

     DELIVERY OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY DOES NOT
CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

     No alternative, conditional or contingent tenders will be accepted for
exchange in the Exchange Offer. All tendering stockholders, by execution of this
Letter of Transmittal or a manually signed facsimile hereof, waive any right to
receive any notice of the acceptance of their shares of DuPont Common Stock for
exchange.

     Holders whose stock certificate(s) representing shares of DuPont Common
Stock are not immediately available or who cannot complete the procedure for
delivery by book-entry transfer on a timely basis or who cannot deliver their
certificate(s) and all other required documents to the Exchange Agent prior to
the Expiration Date may tender their shares of DuPont Common Stock pursuant to
the guaranteed delivery procedure set forth in the Offering Circular-

                                       12
<PAGE>   13

Prospectus under "The Exchange Offer -- Guaranteed Delivery Procedure." Pursuant
to such procedure: (1) such tender must be made by or through a participant in
the Security Transfer Agents Medallion Program (an "Eligible Institution"); (2)
prior to the Expiration Date, the Exchange Agent must have received from such
Eligible Institution a properly completed and duly executed Notice of Guaranteed
Delivery substantially in the form provided by DuPont setting forth the name and
address of the holder and the number of shares of DuPont Common Stock tendered,
stating that the tender is being made thereby and guaranteeing that, within
three New York Stock Exchange trading days after the date of execution of the
Notice of Guaranteed Delivery, the certificate(s) representing the shares of
DuPont Common Stock accompanied by all other documents required by this Letter
of Transmittal will be deposited by the Eligible Institution with the Exchange
Agent; and (3) the certificate(s) representing the shares of DuPont Common Stock
tendered herewith (or a confirmation of a book-entry transfer of such shares of
DuPont Common Stock into the Exchange Agent's account at the Book-Entry Transfer
Facility as described above), together with a properly completed and duly
executed Letter of Transmittal (or a manually signed facsimile hereof) and any
required signature guarantees, or an agent's message in connection with a
book-entry transfer, and any other documents required hereby, must be received
by the Exchange Agent within three New York Stock Exchange trading days after
the date of execution of the Notice of Guaranteed Delivery, all as provided in
the Offering Circular-Prospectus under "The Exchange Offer -- Guaranteed
Delivery Procedure."

     All questions as to the validity, form, eligibility (including time of
receipt), acceptance and withdrawal of tendered shares of DuPont Common Stock
will be determined by DuPont, in its sole discretion, which determination shall
be final and binding on all tendering Stockholders. DuPont reserves the absolute
right to reject any or all tenders of shares of DuPont Common Stock determined
by it not to be in proper form or the acceptance of which may, in the opinion of
DuPont's counsel, be unlawful. DuPont also reserves the absolute right to waive
any defect or irregularity in any tender of shares of DuPont Common Stock. All
tendering Stockholders, by execution of this Letter of Transmittal (or a
manually signed facsimile thereof), waive any right to receive notice of the
acceptance of their shares of DuPont Common Stock for exchange.

     DuPont reserves the right to request any additional information from any
record or beneficial owner of DuPont shares that DuPont in its sole discretion
determines to so request including with respect to the tax status of any such
person or of its partners, shareholders, beneficiaries, principals or
participants or the tax impact to DuPont of such person tendering DuPont shares.

     None of DuPont, the Exchange Agent, or any other person shall be under any
duty to give notification of any defect or irregularity in any tender, or incur
any liability for failure to give any such notification. See "The Exchange
Offer -- DuPont's Interpretations are Binding" in the Offering
Circular-Prospectus.

2.  Partial Tenders; Withdrawals

     If less than all the shares of DuPont Common Stock evidenced by any
certificate(s) are to be tendered, the tendering holder should fill in the
number of shares to be tendered in the fourth column of the box entitled
"Description of Shares of DuPont Common Stock Tendered." Shares not tendered
will be credited to a book-entry account maintained by the transfer agent for
the tendering stockholder's benefit (or the benefit of the person indicated in
the "Special Payment Instructions" or "Special Delivery Instruction" Section of
this Letter of Transmittal). Note that a new certificate for the remainder of
the Shares not tendered will not be sent to the person(s) signing this Letter of
Transmittal (nor to anyone otherwise provided in the "Special Payment
Instructions" or "Special Delivery Instructions" sections of this Letter of
Transmittal). All Shares represented by certificates delivered to the Depositary
will be deemed to have been tendered unless otherwise indicated. Any stockholder
whose untendered shares are returned by book-entry credit has the right to
request physical certificates with respect to such Shares pursuant to
instructions contained in a statement mailed to such stockholder following the
Offer. THE ENTIRE NUMBER OF SHARES OF DUPONT COMMON STOCK REPRESENTED BY ANY
CERTIFICATE(S) DELIVERED TO THE EXCHANGE AGENT WILL BE DEEMED TO HAVE BEEN
TENDERED UNLESS OTHERWISE INDICATED.

     Any tendering holder of shares of DuPont Common Stock may withdraw the
tender at any time prior to the Expiration Date, and may also withdraw such
tender after the expiration of 40 business days from the commencement of the
Exchange Offer, unless theretofore accepted for exchange as provided in the
Offering Circular-Prospectus.

                                       13
<PAGE>   14

     To be effective, a written, telegraphic or facsimile transmission notice of
withdrawal must be timely received by the Exchange Agent at one of its addresses
set forth herein and must comply with the requirements set forth in the Offering
Circular-Prospectus under "The Exchange Offer -- Withdrawal Rights." Withdrawals
may not be rescinded, and shares of DuPont Common Stock withdrawn will
thereafter be deemed not validly tendered for purposes of the Exchange Offer.
However, withdrawn shares of DuPont Common Stock may be retendered by again
following the procedures described in the Offering Circular-Prospectus under the
caption "The Exchange Offer -- Procedures for Tendering DuPont Shares".

3.  Signatures on this Letter of Transmittal; Stock Powers and Endorsements;
    Guarantee of Signatures

     If this Letter of Transmittal is signed by the registered holder(s) of the
shares of DuPont Common Stock tendered hereby, the signature(s) must correspond
exactly with the name(s) as written on the face of the certificate(s)
representing the shares of DuPont Common Stock without alteration, enlargement
or any other change whatsoever.

     If any of the shares of DuPont Common Stock tendered hereby are registered
in the name of two or more joint owners, all such owners must sign this Letter
of Transmittal.

     If any tendered shares of DuPont Common Stock are registered in the names
of different holders, it will be necessary to complete, sign and submit as many
separate copies of this Letter of Transmittal as there are different
registrations of certificates.

     If this Letter of Transmittal is signed by the registered holder(s) of the
shares of DuPont Common Stock listed and tendered hereby, no endorsements of
certificates or separate stock powers are required, unless shares of Conoco
Class B Common Stock are to be issued, or any untendered shares of DuPont Common
Stock or for any shares of DuPont Common Stock not accepted for exchange are to
be registered, in the name of a person other than the registered holder(s), in
which case, the stock certificate(s) evidencing the shares of DuPont Common
Stock tendered hereby must be endorsed or accompanied by appropriate stock
power(s), in either case, signed exactly as the name(s) of the registered
holder(s) appear(s) on such stock certificates(s). Signatures on such stock
certificate(s) and stock power(s) must be guaranteed by an Eligible Institution.

     If this Letter of Transmittal is signed by a person other than the
registered holder(s) of the shares of DuPont Common Stock listed and tendered
hereby, the certificate(s) representing such shares of DuPont Common Stock must
be endorsed or accompanied by appropriate stock powers, in either case signed
exactly as the name(s) of the registered holder(s) appear(s) on such
certificate(s), and such signatures must be guaranteed by an Eligible
Institution.

     If this Letter of Transmittal or any certificates or stock powers are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of a corporation or others acting in a fiduciary or representative
capacity, such persons should so indicate when signing, and proper evidence
satisfactory to DuPont of their authority so to act must be submitted.

     All signatures on this Letter of Transmittal must be guaranteed by an
Eligible Institution unless the shares of DuPont Common Stock are tendered: (1)
by a registered holder of such shares of DuPont Common Stock (which term, for
purposes of this Letter of Transmittal, shall include any participant in the
Book-Entry Transfer Facility whose name appears on a security position listing
as the owner of shares of DuPont Common Stock) who has not completed the
entitled "Special Issuance Instructions" (Section II) of this Letter of
Transmittal; or (2) for the account of an Eligible Institution.

4.  Special Issuance and Delivery Instructions

     Tendering holders should indicate in the box entitled "Special Issuance
Instructions" (Section II) or "Special Delivery Instructions" (Section III), as
applicable, the name in which shares of Conoco Class B Common Stock and/or
shares of DuPont Common Stock not tendered or accepted for exchange are to be
credited, and the address to which confirmation of Conoco Class B Common Stock
and/or confirmation of DuPont Common Stock not tendered or any shares of DuPont
Common Stock not accepted for exchange are to be sent, if different from the
name and address of the person signing this Letter of Transmittal. In the case
of issuance of DuPont Common Stock or Conoco Class B Common Stock in a different
name, the employer identification or social security number of the person named
must also be indicated and a substitute Form W-9 must be completed for the new
owner.

                                       14
<PAGE>   15

5.  Participants in the Dividend Reinvestment Plan of DuPont

     If a tendering stockholder desires to tender shares of DuPont Common Stock
credited to the stockholder's account under DuPont's Dividend Reinvestment Plan,
Section I.B. of this Letter of Transmittal must be completed.

     If a stockholder authorizes a tender of shares of DuPont Common Stock held
in the Dividend Reinvestment Plan, all such shares credited to such
stockholder's account(s), including fractional shares, will be tendered, unless
otherwise specified in the appropriate space in Section I.B. In the event that
Section I.B. is not completed, no shares of DuPont Common Stock held in the
tendering stockholder's account will be tendered.

     PARTICIPANTS IN A DUPONT OR DUPONT AFFILIATED COMPANY SAVINGS PLAN OR A
BLUEPRINT BROKERAGE ACCOUNT AT MERRILL LYNCH MAY NOT USE THIS LETTER OF
TRANSMITTAL TO DIRECT THE TENDER OF SHARES OF DUPONT COMMON STOCK, BUT MUST
COMPLY WITH THE INSTRUCTIONS SENT TO YOU SEPARATELY BY THE PLAN TRUSTEES,
ADMINISTRATOR OF THE PLAN OR MERRILL LYNCH.

6.  Stock Transfer Taxes

     DuPont will pay all stock transfer taxes, if any, payable on the transfer
to it of shares of DuPont Common Stock and the transfer to tendering
Stockholders of shares of Class B Common Stock pursuant to the Exchange Offer.
If, however, the exchange of shares is to be made to, or (in the circumstances
permitted by the Exchange Offer) if shares of DuPont Common Stock that are not
tendered or not accepted for exchange are to be registered in the name of or
delivered to any person other than the registered owner, or if tendered
certificates are registered in the name of any person other than the person
signing this Letter of Transmittal, the amount of all stock transfer taxes, if
any (whether imposed on the registered owner or such other person), payable on
account of the transfer to such person must be paid by the tendering Stockholder
unless evidence satisfactory to DuPont of the payment of such taxes or exemption
therefrom is submitted.

     Except as provided in this Instruction 6, it will not be necessary for
transfer tax stamps to be affixed to the certificate(s) representing shares of
DuPont Common Stock listed in this Letter of Transmittal.

7.  Mutilated, Lost, Stolen or Destroyed DuPont Common Stock Certificates

     If any certificate representing shares of DuPont Common Stock has been
mutilated, destroyed, lost or stolen, the stockholder must (1) promptly contact
the Exchange Agent at the address indicated herein for further instructions, (2)
furnish to the Exchange Agent evidence, satisfactory to it in its discretion, of
the ownership of and the destruction, loss or theft of such certificate, (3)
furnish to the Exchange Agent indemnity, satisfactory to it in its discretion,
and (4) comply with such other reasonable requirements as the Exchange Agent may
prescribe.

8.  Odd-Lots

     As described in the Offering Circular-Prospectus, if fewer than all shares
of DuPont Common Stock tendered on or prior to the Expiration Date are to be
exchanged by DuPont, the shares of DuPont Common Stock exchanged first will
consist of all shares of DuPont Common Stock validly tendered by any Stockholder
who owned beneficially and of record as of July 7, 1999 an aggregate of less
than 100 shares of DuPont Common Stock and who tendered all of such shares of
DuPont Common Stock. If the Exchange Offer is completed, all Odd-Lot shares of
DuPont Common Stock will be accepted for exchange and will not be subject to
proration (except as provided below). This preference will not be available
unless Section I.C. or V.B. of this Letter of Transmittal and the Notice of
Guaranteed Delivery, if applicable, is completed.

     DuPont Common Stock held in a DuPont or DuPont affiliated company savings
plan (including Conoco plans) is not eligible for this preferential treatment.
However, DuPont Common Stock held in a Blueprint account at Merrill Lynch is
eligible for this preferential treatment. Stockholders whose Odd-Lot shares are
held by a broker for their account are requested to contact the broker directly
to request this preferential treatment.

                                       15
<PAGE>   16

9.  Solicited Tenders

     DuPont will pay a solicitation fee of $0.75 per share, up to a maximum of
1,000 shares per tendering stockholder, for each share of DuPont Common Stock
tendered and accepted for exchange pursuant to the Exchange Offer, covered by
the Letter of Transmittal which designates, in the section captioned "Notice of
Solicited Tenders," as having solicited and obtained the tender, the name of (1)
any broker or dealer in securities which is a member of any national securities
exchange in the United States or of the National Association of Securities
Dealers, Inc. or (2) any bank or trust company located in the United States
(each, a "soliciting dealer"), except that no solicitation fee shall be payable
in connection with a tender of DuPont Common Stock by a stockholder (a)
tendering more than 10,000 shares of DuPont Common Stock or (b) tendering from a
country outside of the United States. In addition, Soliciting Dealers are not
entitled to a fee with respect to shares of DuPont Common Stock beneficially
owned by such soliciting dealer or with respect to any shares that are
registered in the name of a soliciting dealer unless such shares are held by
such soliciting dealer as nominee and are tendered for the benefit of beneficial
holders identified in this Letter of Transmittal. No such fee shall be payable
to a soliciting dealer if such Soliciting Dealer is required for any reason to
transfer the amount of such fee to a tendering holder (other than itself). No
broker, dealer, bank, trust company or fiduciary shall be deemed to be the agent
of DuPont, the Exchange Agent, the Information Agent or the dealer manager for
the purposes of the Exchange Offer.

     In order for a Soliciting Dealer to receive a solicitation fee with respect
to the tender of shares of DuPont Common Stock, the Exchange Agent must have
received a properly completed and duly executed Letter of Transmittal (including
a completed box entitled "Notice of Solicited Tenders" (Section VI) by three
NYSE trading days after the expiration date.

     The acceptance of compensation by the soliciting dealer listed in "Notice
of Solicited Tenders" (Section VI) will constitute a representation by such
soliciting dealer that: (1) it has complied with the applicable requirements of
the Securities Exchange Act of 1934, as amended, and the applicable rules and
regulations thereunder, in connection with such solicitation; (2) it is entitled
to such compensation for such solicitation under the terms and conditions of the
Offering Circular-Prospectus and this Letter of Transmittal; and (3) in
soliciting tenders of shares of DuPont Common Stock, it has used no soliciting
materials other than those furnished by DuPont.

10.  Important Tax Information; Substitute Form W-9

     Federal income tax law requires that a holder whose tendered shares of
DuPont Common Stock are accepted for exchange must provide the Exchange Agent
(as payor) with his or her correct taxpayer identification number ("TIN") on
Substitute Form W-9 on page 9, which, in the case of a holder who is an
individual, is his or her social security number. If the Exchange Agent is not
provided with the correct TIN or an adequate basis for exemption, the holder may
be subject to a penalty imposed by the Internal Revenue Service ("IRS").

     Exempt holders (including, among others, all corporations) are not subject
to these backup withholding and reporting requirements. See the enclosed
Guidelines for Certification of Taxpayer Identification Number on Substitute
Form W-9 for additional instructions. In order for a foreign individual to
qualify as an exempt person, that individual must submit a statement, signed
under penalty of perjury, attesting to that individual's exempt status.

     To prevent backup withholding, each tendering holder must provide his or
her correct TIN by completing the "Substitute Form W-9" set forth herein,
certifying that the TIN provided is correct (or that such holder is awaiting a
TIN) and that (1) the holder is exempt from backup withholding, (2) the holder
has not been notified by the IRS that he or she is subject to backup withholding
as a result of the failure to report all interest or dividends or (3) the IRS
has notified the holder that he or she is no longer subject to backup
withholding. In order to satisfy the Exchange Agent that a foreign individual
qualifies as an exempt recipient, such holders must submit a statement signed
under penalty of perjury attesting to such exempt status. Such statements may be
obtained from the Exchange Agent. If the certificate(s) representing shares of
DuPont Common Stock are in more than one name or are not in the name of the
actual owner, consult the enclosed guidelines for information on which TIN to
report. If you do not have a TIN, consult the enclosed guidelines for
instructions of applying for a TIN, check the box of the Substitute Form W-9
(Section IV) indicating that you have applied for and are awaiting receipt of
your taxpayer identification number, and complete the Certification of Payee
Awaiting Taxpayer Identification Number in order to avoid backup withholding.
Notwithstanding there is a check in the box indicating that you have applied for
and are awaiting receipt of your taxpayer identification number and the
Certification of Awaiting Taxpayer Identification Number is completed, the
Exchange Agent will withhold 31% of all

                                       16
<PAGE>   17

reportable payments made prior to the time a properly certified TIN is provided
to the Exchange Agent, and if the TIN is provided within 60 days, such amount
will be refunded. Backup withholding is not an additional tax. Rather, the
federal income tax liability of persons subject to backup withholding will be
reduced by the amount of tax withheld. If backup withholding results in an
overpayment of taxes, a refund may be obtained from the IRS.

     Holders of shares of DuPont Common Stock who acquired their shares at
different times may have different tax bases in their shares of DuPont Common
Stock, and should consult with their tax advisors as to the possibility of
identifying the specific shares of DuPont Common Stock surrendered in the
Exchange Offer in order to establish the basis of the shares of Conoco Class B
Common Stock issued in exchange for shares of DuPont Common Stock surrendered.

11.  Waiver of Conditions

     DuPont reserves the absolute right to amend or waive any of the specified
conditions to the Exchange Offer in the case of any shares of DuPont Common
Stock tendered other than certain conditions specified in the Offering Circular-
Prospectus.

12.  Requests for Assistance or Additional Copies

     Questions relating to the procedure for tendering and requests for
additional copies of the Offering Circular - Prospectus and this Letter of
Transmittal may be directed to D.F. King & Co., Inc. at the address and
telephone numbers indicated below.

                The Information Agent for the Exchange Offer is:

                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
           (800) 755-3105 (Toll-Free) for calls in the United States

          (212) 269-5550 (Collect) for calls outside the United States

                                       17
<PAGE>   18

                The Information Agent for the Exchange Offer is:

                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
           (800) 755-3105 (Toll-Free) for calls in the United States

          (212) 269-5550 (Collect) for calls outside the United States

<PAGE>   1
                                                                  Exhibit (a)(5)
                      E. I. DU PONT DE NEMOURS AND COMPANY
                         NOTICE OF GUARANTEED DELIVERY

                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     This Notice of Guaranteed Delivery or one substantially similar hereto must
be used to accept the Exchange Offer (as defined herein) of E. I. du Pont de
Nemours and Company ("DuPont"), as set forth in the Offering Circular -
Prospectus dated July 12, 1999 (the "Offering Circular - Prospectus") and the
accompanying Letter of Transmittal, if (1) your stock certificate(s)
representing shares of common stock, par value $.30 per share (the "DuPont
Common Stock"), of DuPont are not immediately available, (2) you cannot complete
the procedure for book-entry transfer on a timely basis or (3) you cannot
deliver the certificate(s) and all other required documents to First Chicago
Trust Company of New York (the "Exchange Agent") prior to the Expiration Date
(as defined in the Offering Circular - Prospectus). You may deliver this Notice
of Guaranteed Delivery by hand, telegram, facsimile transmission or mail to the
Exchange Agent. See "The Exchange Offer-Guaranteed Delivery Procedure" in the
Offering Circular -- Prospectus.

     The Exchange Offer is available only to DuPont stockholders who are United
States persons, as explained on page 25 of the Offering Circular-Prospectus. A
United States person for purposes of the Exchange Offer is any person that is:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any state within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

DUPONT STOCKHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING THEIR
STATUS AS UNITED STATES PERSONS. DUPONT STOCKHOLDERS WHO ARE NOT UNITED STATES
PERSONS ARE INELIGIBLE TO PARTICIPATE IN THE EXCHANGE OFFER AND SHOULD NOT
COMPLETE THIS TENDER INSTRUCTION FORM. If you are not a United States person,
you should contact D.F. King or your broker for more information regarding a
substantially concurrent cash offer being made to non-United States persons by
DuPont. United States persons are not eligible to participate in the cash offer.

          TO: FIRST CHICAGO TRUST COMPANY OF NEW YORK, EXCHANGE AGENT

<TABLE>
<S>                                    <C>                                    <C>
             If by mail:                      If by overnight courier:                     If by hand:
     First Chicago Trust Company            First Chicago Trust Company            First Chicago Trust Company
             of New York                            of New York                            of New York
    Attn: Corporate Actions Dept.          Attn: Corporate Actions Dept.           c/o Securities Transfer and
       P.O. Box 2569 Suite 4660                8th Floor, Suite 4680                  Reporting Service Inc.
      Jersey City, NJ 07303-2569                   14 Wall Street                  100 William Street, Galleria
                                                 New York, NY 10005                     New York, NY 10038
</TABLE>

                         If by facsimile transmission:

                        (For Eligible Institutions only)
                                 (201) 222-4720
                                       or
                                 (201) 222-4721

                         Facsimile confirmation number:
                                 (201) 222-4707

   DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE OR
 TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE TRANSMISSION TO A NUMBER OTHER THAN
            AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

     This Notice of Guaranteed Delivery is not to be used to guarantee
signatures. If a signature on a Letter of Transmittal is required to be
guaranteed by an "Eligible Institution" under the Instructions thereto, such
signature guarantee must appear in the applicable space provided in the
signature box on the Letter of Transmittal.
<PAGE>   2

Ladies and Gentlemen:

     I hereby tender to E. I. du Pont de Nemours and Company the shares of
DuPont Common Stock listed below, upon the terms of and subject to the
conditions set forth in the Offering Circular - Prospectus and the related
Letter of Transmittal and the instructions thereto, receipt of which I hereby
acknowledge, pursuant to the guaranteed delivery procedures set forth in the
Offering Circular - Prospectus, as follows:

<TABLE>
<S>                                                               <C>
Certificate No.                                                   Number of Shares

- -----------------------------------------------------------       -----------------------------------------------------------

- -----------------------------------------------------------       -----------------------------------------------------------

- -----------------------------------------------------------       -----------------------------------------------------------

- -----------------------------------------------------------       -----------------------------------------------------------

THE BOOK-ENTRY TRANSFER FACILITY ACCOUNT NUMBER                   SIGN HERE
(IF THE SHARES OF DUPONT COMMON STOCK
WILL BE TENDERED BY BOOK-ENTRY TRANSFER)

                                                                  -----------------------------------------------------------

- -----------------------------------------------------------       -----------------------------------------------------------
                      ACCOUNT NUMBER                                                     SIGNATURE(S)

- -----------------------------------------------------------       -----------------------------------------------------------
                     NUMBER OF SHARES                                            NUMBER AND STREET OR P.O. BOX

Dated: ---------------------------------------------, 1999        -----------------------------------------------------------
                                                                                     CITY, STATE, ZIP CODE
</TABLE>

                                    ODD-LOTS

     This section is to be completed ONLY if shares of DuPont Common Stock are
being tendered by or on behalf of a person owning beneficially and of record an
aggregate of less than 100 shares of DuPont Common Stock as of July 7, 1999.

     Check one:

     [ ]  I am the owner beneficially and of record of less than 100 shares of
          DuPont Common Stock in the aggregate as of July 7, 1999, all of which
          are being tendered, or

     [ ]  I am a broker, dealer, commercial bank, trust company or other nominee
          who (1) is tendering, for the beneficial owners thereof, shares of
          DuPont Common Stock with respect to which I am the record owner, and
          (2) believe, based upon representations made to me by each such
          beneficial owner, that such owner owned beneficially and of record
          less than 100 shares of DuPont Common Stock as of July 7, 1999, and is
          tendering all such shares.
<PAGE>   3

                                   GUARANTEE

                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a participant in the Security Transfer Agents Medallion
Program, (a) represents and guarantees that the above-named person(s) "own(s)"
the shares of DuPont Common Stock tendered hereby within the meaning of Rule
14e-4 of the Securities Exchange Act of 1934, as amended, (b) represents and
guarantees that the tender of such shares of DuPont Common Stock complies with
Rule 14e-4, and (c) guarantees delivery to the Exchange Agent of certificates
for the shares of DuPont Common Stock tendered hereby, in proper form for
transfer or delivery of such shares of DuPont Common Stock pursuant to
procedures for book-entry transfer, in either case with delivery of a properly
completed and duly executed Letter of Transmittal (or manually signed facsimile
thereof) and any other required documents, unless an Agent's Message is
utilized, all within three NYSE trading days after the date hereof.

                                         ---------------------------------------
                                         FIRM NAME (PRINT)

                                         ---------------------------------------
                                         AUTHORIZED SIGNATURE

                                         ---------------------------------------
                                         ADDRESS

                                         ---------------------------------------
                                         CITY, STATE, ZIP CODE

                                         ---------------------------------------
                                         AREA CODE AND TELEPHONE NUMBER

Date -----------------------, 1999

           DO NOT SEND CERTIFICATE(S) OR ANY OTHER REQUIRED DOCUMENTS
             WITH THIS FORM. THEY SHOULD BE SENT WITH THE LETTER OF
                       TRANSMITTAL TO THE EXCHANGE AGENT
                (UNLESS A BOOK-ENTRY TRANSFER FACILITY IS USED).

<PAGE>   1
                                                                Exhibit (a)(6)
                      E. I. DU PONT DE NEMOURS AND COMPANY

                        OFFER TO EXCHANGE 2.95 SHARES OF
                      CLASS B COMMON STOCK OF CONOCO INC.
                       FOR EACH SHARE OF COMMON STOCK OF
E. I. DU PONT DE NEMOURS AND COMPANY UP TO AN AGGREGATE OF 147,980,872 SHARES OF
                  COMMON STOCK OF E. I. DU PONT DE NEMOURS AND
                     COMPANY HELD BY UNITED STATES PERSONS

To Brokers, Securities Dealers, Commercial Banks, Trust Companies and Other
Nominees:

     E. I. du Pont de Nemours and Company ("DuPont") is offering, upon the terms
and subject to the conditions set forth in the enclosed Offering
Circular - Prospectus dated July 12, 1999 (the "Offering Circular - Prospectus")
and the enclosed Letter of Transmittal (the "Letter of Transmittal"; and
together with the Offering Circular - Prospectus, the "Exchange Offer"), to
exchange 2.95 shares of Class B common stock, par value $.01 per share ("Conoco
Class B Common Stock"), of Conoco Inc. ("Conoco") for each share tendered of
common stock, par value $.30 per share, of DuPont ("DuPont Common Stock") held
by a United States person up to an aggregate of 147,980,872 shares of DuPont
Common Stock tendered and exchanged.

     The Exchange Offer is available only to DuPont stockholders who are United
States persons, as explained on page 25 of the Offering Circular-Prospectus. A
United States person for purposes of the Exchange Offer is any person that is:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any state within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

     We are asking you to contact your clients who are United States persons
with United States addresses for whom you hold shares of DuPont Common Stock
registered in your name or in the name of your nominee. You will be reimbursed
for customary mailing and handling expenses incurred by you in forwarding any of
the enclosed materials to your clients. No domestic stock transfer taxes will be
payable as a result of the transaction. DuPont will pay all applicable foreign
stock transfer taxes, except as otherwise provided in Instruction 6 of the
Letter of Transmittal.

     DuPont will pay to a Soliciting Dealer, as defined herein, a solicitation
fee of $0.75 per share, up to a maximum of 1,000 shares per tendering
stockholder, for each share of DuPont Common Stock tendered and accepted for
exchange pursuant to the Exchange Offer if such Soliciting Dealer has
affirmatively solicited and obtained such tender, except that no solicitation
fee shall be payable in connection with a tender of shares of DuPont Common
Stock by a shareholder (a) tendering more than 10,000 shares of DuPont Common
Stock or (b) tendering outside of the United States. "Soliciting Dealer"
includes (1) any broker or dealer in securities which is a member of any
national securities exchange or of the National Association of Securities
Dealers, Inc. or (2) any bank or trust company located in the United States. In
order for a Soliciting Dealer to receive a solicitation fee with respect to the
tender of shares of DuPont Common Stock, the Exchange Agent must have received
by three NYSE trading days after the expiration date a properly completed and
executed form entitled "Notice of Solicited Tenders" as attached.

     SOLICITING DEALERS SHOULD TAKE CARE TO ENSURE PROPER RECORD-KEEPING TO
DOCUMENT THEIR ENTITLEMENT TO ANY SOLICITATION FEE. DUPONT AND THE EXCHANGE
AGENT RESERVE THE RIGHT TO REQUIRE ADDITIONAL INFORMATION, IF DEEMED TO BE
WARRANTED.
<PAGE>   2

     All questions as to the validity, form and eligibility (including time of
receipt) of Notices of Solicited Tenders will be determined by the Exchange
Agent and DuPont in their discretion, which determination will be final and
binding. Neither the Exchange Agent nor any other person will be under any duty
to give notification of any defects or irregularities in any Notice of Solicited
Tenders or incur any liability for failure to give such notification.

     Soliciting Dealers will include any of the organizations described in
clauses (1) and (2) above even when the activities of such organizations in
connection with the Exchange Offer consist solely of forwarding to clients
material relating to the Exchange Offer, including the Offering
Circular -- Prospectus and the related Letter of Transmittal, and tendering
shares of DuPont Common Stock as directed by beneficial owners thereof; provided
that under no circumstances shall any fee be paid to Soliciting Dealers more
than once with respect to any share of DuPont Common Stock. No Soliciting Dealer
is required to make any recommendation to holders of shares of DuPont Common
Stock as to whether to tender or refrain from tendering in the Exchange Offer.
No assumption is made, in making payment to any Soliciting Dealer, that its
activities in connection with the Exchange Offer included any activities other
than those described above, and for all purposes noted in all materials relating
to the Exchange Offer, the term "solicit" shall be deemed to mean no more than
processing shares of DuPont Common Stock tendered or forwarding to customers
materials regarding the Exchange Offer.

     No fee shall be paid to a Soliciting Dealer with respect to shares of
DuPont Common Stock beneficially owned by such Soliciting Dealer or with respect
to any shares that are registered in the name of a Soliciting Dealer unless such
shares are held by such Soliciting Dealer as nominee and are tendered for the
benefit of a beneficial holder. No such fee shall be payable to a Soliciting
Dealer if such Soliciting Dealer is required for any reason to transfer the
amount of such fee to a tendering holder (other than itself). No broker, dealer,
bank, trust company or fiduciary shall be deemed to be the agent of DuPont,
Conoco, the Exchange Agent, the Dealer Manager or the Information Agent for
purposes of the Exchange Offer.

     Enclosed is a copy of each of the following documents:

     1. The Offering Circular - Prospectus.

     2. The Letter of Transmittal for your use and for the information of your
        clients.

     3. The Notice of Guaranteed Delivery.

     4. A form of letter which may be sent to your clients for whose account you
        hold shares of DuPont Common Stock registered in your name or the name
        of your nominee with space provided for obtaining the clients'
        instructions with regard to the Exchange Offer.

     5. Guidelines for Certification of Taxpayer Identification Number on
        Substitute Form W-9.

     6. A return envelope addressed to the First Chicago Trust Company of New
        York, the Exchange Agent.

     7. Letter from DuPont to stockholders.

     Your prompt action is requested. The Exchange Offer will expire at 12:00
Midnight, New York City time, on August 6, 1999, or if extended by DuPont, the
latest date and time to which extended (the "Expiration Date"). Shares of DuPont
Common Stock tendered pursuant to the Exchange Offer may be withdrawn, subject
to the procedures described in the Offering Circular - Prospectus, at any time
prior to the Expiration Date and after July 12, 1999, if not theretofore
accepted for exchange.

     To participate in the Exchange Offer, certificates for shares of DuPont
Common Stock (or evidence of a book-entry delivery into the Exchange Agent's
account at The Depository Trust Company) and a duly executed and properly
completed Letter of Transmittal or a manually signed facsimile thereof together
with any other required documents, or an agent's message in connection with a
book-entry transfer, must be delivered to the Exchange Agent as indicated in the
Exchange Offer. If holders of shares of DuPont Common Stock wish to tender their
shares, but it is impracticable for them to do so prior to the Expiration Date,
a tender may be effected by following the guaranteed delivery procedures
described in the Offering Circular - Prospectus under "The Exchange
Offer -- Guaranteed Delivery Procedure."

     Additional information concerning the Exchange Offer and additional copies
of the enclosed material may be obtained from D.F. King & Co., Inc. (the
"Information Agent") at (800) 755-3105 (toll free) in the United States or at
(212) 269-5550 (collect) elsewhere.
<PAGE>   3

                          NOTICE OF SOLICITED TENDERS

     ALL NOTICES OF SOLICITED TENDERS SHOULD BE RETURNED TO THE EXCHANGE AGENT
WITHIN THREE NYSE TRADING DAYS AFTER THE EXPIRATION DATE TO THE ADDRESS SET
FORTH ON THE BACK COVER OF THE OFFER. NOTICES MAY BE DELIVERED BY FACSIMILE TO
THE EXCHANGE AGENT AT (201) 222-4720 OR (201) 227-4721 (CONFIRM RECEIPT BY
TELEPHONE (201) 222-4707).

                    BENEFICIAL OWNERS QUALIFIED FOR ODD-LOT

<TABLE>
<S>                     <C>                     <C>                     <C>                     <C>
- -----------------------------------------------------------------------------------------------------------------------
    DTC PARTICIPANT           VOI TICKET              VOI TICKET           NUMBER OF SHARES      NUMBER OF BENEFICIAL
        NUMBER                  NUMBER                   TOTAL           REQUESTED FOR PAYMENT   OWNER(S) REPRESENTED
- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------
</TABLE>

                   BENEFICIAL OWNERS OF 1,000 OR LESS SHARES

<TABLE>
<S>                     <C>                     <C>                     <C>                     <C>
- -----------------------------------------------------------------------------------------------------------------------
    DTC PARTICIPANT           VOI TICKET              VOI TICKET           NUMBER OF SHARES      NUMBER OF BENEFICIAL
        NUMBER                  NUMBER                   TOTAL           REQUESTED FOR PAYMENT   OWNER(S) REPRESENTED*
- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------
</TABLE>

    BENEFICIAL OWNERS OF GREATER THAN 1,000 AND NOT MORE THAN 10,000 SHARES

<TABLE>
<S>                     <C>                     <C>                     <C>                     <C>
- -----------------------------------------------------------------------------------------------------------------------
    DTC PARTICIPANT           VOI TICKET              VOI TICKET           NUMBER OF SHARES      NUMBER OF BENEFICIAL
        NUMBER                  NUMBER                   TOTAL           REQUESTED FOR PAYMENT   OWNER(S) REPRESENTED*
- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------
</TABLE>

- ---------------
* Use attached sheet if ticket represents more than one Beneficial Owner.
<PAGE>   4

    BENEFICIAL OWNERS OF GREATER THAN 1,000 AND NOT MORE THAN 10,000 SHARES

                        BENEFICIAL OWNER BREAKDOWN FORM

DTC Participant Number: ________________________
VOI Ticket Number: ________________________
VOI Ticket Total: ________________________

<TABLE>
<S>              <C>                                                          <C>
                 ------------------------------------------------------------
                 NUMBER OF SHARES REQUESTED FOR PAYMENT PER BENEFICIAL OWNER
                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 ------------------------------------------------------------

                 TOTAL
                 ------------------------------------------------------------
</TABLE>

     The acceptance of compensation by such soliciting dealer will constitute a
representation by it that: (1) it has complied with the applicable requirements
of the Securities Exchange Act of 1934, as amended, and the applicable rules and
regulations thereunder, in connection with such solicitation; (2) it is entitled
to such compensation for such solicitation under the terms and conditions of the
Offering Circular-Prospectus; and (3) in soliciting tenders of shares of DuPont
Common Stock, it has used no soliciting materials other than those furnished by
DuPont.

Print Firm Name
- ------------------------------------ Address
- ------------------------------------------------

Authorized Signature
- ------------------------------- City, State, Zip Code
- ----------------------------------

Area Code and Telephone Number
- ---------------- Attention
- -----------------------------------------------
<PAGE>   5

                     SOLICITATION FEE PAYMENT INSTRUCTIONS

ISSUE CHECK TO:

Firm
- --------------------------------------------------------------------------------

                                 (Please Print)

Attention
- --------------------------------------------------------------------------------

Address
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

                               (Include Zip Code)

Phone Number
- --------------------------------------------------------------------------------

Taxpayer Identification or Social Security No.
- --------------------------------------------------------------------

Applicable VOI Number
- --------------------------- Number of Shares
- --------------------------------------

 If solicitation fees are to be paid to another Eligible Institution(s), please
                            complete the following:

ISSUE CHECK TO:

Firm
- --------------------------------------------------------------------------------

                                 (Please Print)

Attention
- --------------------------------------------------------------------------------

Address
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

                               (Include Zip Code)

Phone Number
- --------------------------------------------------------------------------------

Taxpayer Identification or Social Security No.
- --------------------------------------------------------------------

Applicable VOI Number
- --------------------------- Number of Shares
- --------------------------------------

*NOTE: IF ADDITIONAL PAYMENT INSTRUCTIONS, PLEASE COPY AND ATTACH.

                                        Very truly yours,

                                        E. I. DU PONT DE NEMOURS AND COMPANY

     NOTHING HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR ANY
PERSON AS AN AGENT OF DUPONT, CONOCO, THE EXCHANGE AGENT, THE DEALER MANAGER OR
THE INFORMATION AGENT, OR AUTHORIZE YOU OR ANY OTHER PERSON TO MAKE ANY
STATEMENTS ON BEHALF OF ANY OF THEM WITH RESPECT TO THE EXCHANGE OFFER, EXCEPT
FOR STATEMENTS EXPRESSLY MADE IN THE OFFERING CIRCULAR-PROSPECTUS OR THE LETTER
OF TRANSMITTAL.

<PAGE>   1
                                                                 Exhibit (a)(7)
                      E. I. DU PONT DE NEMOURS AND COMPANY

                        OFFER TO EXCHANGE 2.95 SHARES OF
                    CLASS B COMMON STOCK OF CONOCO INC. FOR
       EACH SHARE OF COMMON STOCK OF E. I. DU PONT DE NEMOURS AND COMPANY
                  UP TO AN AGGREGATE OF 147,980,872 SHARES OF
          COMMON STOCK OF E. I. DU PONT DE NEMOURS AND COMPANY HELD BY
                             UNITED STATES PERSONS

To Our Clients:

     Enclosed for your consideration is an Offering Circular - Prospectus dated
July 12, 1999 (the "Offering Circular - Prospectus") and a form of Letter of
Transmittal WHICH ARE FURNISHED TO YOU FOR INFORMATION ONLY AND MAY NOT BE USED
BY YOU TO TENDER SHARES OF DUPONT COMMON STOCK (the "Letter of Transmittal"; and
together with the Offering Circular - Prospectus, the "Exchange Offer") relating
to the offer by E. I. du Pont de Nemours and Company ("DuPont") to exchange 2.95
shares of Class B common stock, par value $.01 per share, of Conoco Inc.
("Conoco Common Stock") for each share tendered of common stock, par value $.30
per share, of DuPont ("DuPont Common Stock") held by a United States person up
to an aggregate of 147,980,872 shares of DuPont Common Stock tendered and
exchanged.

     The Exchange Offer is available only to DuPont stockholders who are United
States persons, as explained on page 25 of the Offering Circular-Prospectus. A
United States person for purposes of the Exchange Offer is any person that is:

     - an individual who is a United States citizen or United States resident
       for United States federal income tax purposes;

     - a corporation, partnership, limited liability company or other entity
       created or organized in the United States or under the laws of the United
       States or of any state within the United States;

     - an estate which is subject to United States income tax on all of its
       income, regardless of the source of such income; or

     - a trust if a United States court is able to exercise primary supervision
       over the administration of the trust, and one or more United States
       persons have the authority to control all substantial decisions of the
       trust. Such a trust includes, without limitation, any United States
       pension trust organized under Section 401(a) of the Internal Revenue
       Code.

DUPONT STOCKHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING THEIR
STATUS AS UNITED STATES PERSONS IN ORDER TO DETERMINE THEIR ELIGIBILITY TO
PARTICIPATE IN THE EXCHANGE OFFER. DUPONT STOCKHOLDERS WHO ARE NOT UNITED STATES
PERSONS ARE INELIGIBLE TO PARTICIPATE IN THE EXCHANGE OFFER AND SHOULD NOT
COMPLETE THIS TENDER INSTRUCTION FORM. If you are not a United States person,
you should contact D.F. King or your broker for more information regarding a
substantially concurrent cash offer being made to non-United States persons by
DuPont. United States persons are not eligible to participate in the cash offer.

     The material is being forwarded to you as the beneficial owner of shares of
DuPont Common Stock carried by us in your account but not registered in your
name. A tender of such shares of DuPont Common Stock may only be made by us as
the registered holder and pursuant to your instructions. Therefore, DuPont urges
holders of shares of DuPont Common Stock registered in the name of a broker,
dealer, commercial bank, trust company or other nominee to contact such
registered holder promptly if they wish to accept the Exchange Offer.

     Accordingly, we request instructions as to whether you wish us to tender
any or all such shares of DuPont Common Stock held by us for your account
pursuant to the terms and conditions set forth in the enclosed Offering
Circular - Prospectus and the related Letter of Transmittal.

     Your instructions to us should be forwarded as promptly as possible in
order to permit us to tender shares of DuPont Common Stock in accordance with
the provisions of the Exchange Offer. The Exchange Offer will expire at 12:00
Midnight, New York City time, on Friday, August 6, 1999, or if extended by
DuPont, the
<PAGE>   2

latest date and time to which extended (the "Expiration Date"). Shares of DuPont
Common Stock tendered pursuant to the Exchange Offer may be withdrawn, subject
to the procedures described in the Offering Circular - Prospectus, at any time
prior to the Expiration Date and after July 12, 1999, if not theretofore
accepted for exchange by DuPont.

     Your attention is directed to the following:

     1. The Exchange Offer is for up to an aggregate of 147,980,872 shares of
        DuPont Common Stock.

     2. DuPont's obligation to accept shares of DuPont Common Stock tendered in
        the Exchange Offer is subject to certain conditions specified in the
        Offering Circular - Prospectus.

     3. No domestic stock transfer taxes will be payable as a result of the
        transaction. DuPont will pay all foreign stock transfer taxes, except as
        otherwise provided in Instruction 6 of the Letter of Transmittal.

     If you wish to have us tender any or all of your shares of DuPont Common
Stock, please so instruct us by completing, executing and returning to us the
instruction form which appears on the reverse side of this letter. The
instruction form is to be completed only by United States persons. Persons who
are not United States persons can not participate in the Exchange Offer.
<PAGE>   3

                                  INSTRUCTIONS

     I acknowledge receipt of your letter and the enclosed material referred to
therein relating to the Exchange Offer of E. I. du Pont de Nemours and Company
("DuPont") of DuPont common stock, par value $.30 per share ("DuPont Common
Stock") held by a United States person.

     This will instruct you to tender the shares of DuPont Common Stock
indicated below (or, if no number is indicated below, all shares) held by you
for my account, pursuant to the terms of and conditions set forth in the
Offering Circular - Prospectus and the Letter of Transmittal.

     Box 1 [ ] Please tender all of my shares of DuPont Common Stock held by you
               for my account.

     Box 2 [ ] Please tender                (number) of the shares of DuPont
               Common Stock held by you for my account.
- --------------------------------------------------------------------------------
                                    ODD-LOTS

[ ] By checking this box, I represent that I owned beneficially and of record as
    of July 7, 1999, an aggregate of less than 100 shares of DuPont Common Stock
    and am tendering all such shares.
- --------------------------------------------------------------------------------

                                   SIGNATURE

BY SIGNING BELOW, I HEREBY CERTIFY THAT I AM A UNITED STATES PERSON AS DEFINED
ON PAGE 1 OF THIS LETTER AND ON PAGE 25 OF THE OFFERING CIRCULAR -- PROSPECTUS
AND THAT I AM ELIGIBLE TO PARTICIPATE IN THIS EXCHANGE OFFER.
<TABLE>
     <S>                                                          <C>



                                                     Dated:       -----------------------------------------------------------
        ---------------------------------------------------       -----------------------------------------------------------
                                                                  SIGNATURE(S)
                                                                  -----------------------------------------------------------
                                                                  -----------------------------------------------------------
                                                                  PLEASE PRINT NAME(S) HERE
</TABLE>

     UNLESS A SPECIFIC CONTRARY INSTRUCTION IS GIVEN IN THE SPACE PROVIDED, YOUR
SIGNATURE(S) HEREON SHALL CONSTITUTE AN INSTRUCTION TO US TO TENDER ALL OF YOUR
SHARES OF DUPONT COMMON STOCK.

     PLEASE RETURN THIS FORM TO THE BROKERAGE FIRM MAINTAINING YOUR ACCOUNT, NOT
THE EXCHANGE AGENT, INFORMATION AGENT OR DUPONT.

<PAGE>   1
                                                                  Exhibit (a)(8)

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE
PAYER.  Social Security numbers have nine digits separated by two hyphens: i.e.,
000-00-0000. Employer identification numbers have nine digits separated by only
one hyphen, i.e., 00-0000000. The table below will help determine the number to
give the payer.

<TABLE>
<C>  <S>                                 <C>
- ---------------------------------------------------------------
                                         GIVE THE
               FOR THIS TYPE OF ACCOUNT  SOCIAL SECURITY
                                         NUMBER OF --
- ---------------------------------------------------------------

 1.  An individual's account             The individual
 2.  Two or more individuals             The actual owner of
     (joint account)                     the account or, if
                                         combined funds, any
                                         one of the individuals
                                         on the account(1)
 3.  Husband and wife                    The actual owner of
     (joint account)                     the account or, if
                                         joint funds, either
                                         person(1)
 4.  Custodian account of a minor        The minor(2)
     (Uniform Gift to Minors Act)
 5.  Adult and minor (joint account)     The adult or, if the
                                         minor is the only
                                         contributor, the
                                         minor(3)
 6.  Account in the name of guardian or  The ward, minor, or
     committee for a designated ward,    incompetent person(4)
     minor, or incompetent person
 7.  a. The usual revocable savings      The grantor-trustee(3)
     trust account (grantor is also
        trustee)
     b. So-called trust account that is  The actual owner(3)
     not a legal or valid trust under
        State law
 8.  Sole proprietorship account         The owner(5)
- ---------------------------------------------------------------
- ---------------------------------------------------------------
                                         GIVE THE EMPLOYER
               FOR THIS TYPE OF ACCOUNT  IDENTIFICATION
                                         NUMBER OF --
- ---------------------------------------------------------------

 9.  A valid trust, estate, or pension   The legal entity (do
     trust                               not furnish the
                                         identifying number of
                                         the personal
                                         representative or
                                         trustee unless the
                                         legal entity itself is
                                         not designated in the
                                         account title)(3)
10.  Corporate account                   The corporation
11.  Religious, charitable, or           The organization
     educational organization account
12.  Partnership account held in the     The partnership
     name of the business
13.  Association, club, or other         The organization
     tax-exempt organization
14.  A broker or registered nominee      The broker or nominee
15.  Account with the Department of      The public entity
     Agriculture in the name of a
     public entity (such as a State or
     local government, school district,
     or prison) that receives
     agricultural program payments
- ---------------------------------------------------------------
</TABLE>

(1) List first and circle the name of the person whose number you furnish.
(2) Circle the minor's name and furnish the minor's social security number.
(3) List first and circle the name of the legal trust, estate, or pension trust.
(4) Circle the ward, minor's or incompetent person's name and furnish such
    person's social security number.
(5) Show the name of the owner.

NOTE: If no name is circled when there is more than one name, the number will be
      considered to be that of the first name listed.
<PAGE>   2

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

OBTAINING A NUMBER
If you don't have a taxpayer identification number or you don't know your
number, obtain Internal Revenue Service Form SS-5, Application for Social
Security Number Card or Form SS-4, Application for Employer Identification
Number at your local office of the Social Security Administration or the
Internal Revenue Service and apply for a number.

PAYEES EXEMPT FROM BACKUP WITHHOLDING
Payees specifically exempted from backup withholding on ALL payments include the
following:
  - A corporation.
  - A financial institution.
  - An organization exempt from tax under Section 501(A) or an individual
    retirement plan.
  - The United States or any agency or instrumentality thereof.
  - A state, the District of Columbia, a possession of the United States or any
    subdivision or instrumentality thereof.
  - A foreign government, a political subdivision of a foreign government, or
    any agency or instrumentality thereof.
  - An international organization or any agency or instrumentality thereof.
  - A registered dealer in securities or commodities registered in the U.S. or a
    possession of the U.S.
  - A real estate investment trust.
  - A common trust fund operated by a bank under Section 584(a).
  - An exempt charitable remainder trust, or a non-exempt trust described in
    section 4947(a)(1).
  - An entity registered at all times under the Investment Company Act of 1940.
  - A foreign central bank of issue.

Payments of dividends and patronage dividends not generally subject to backup
withholding include the following:
  - Payments to nonresident aliens subject to withholding under Section 1441.
  - Payments to partnerships not engaged in a trade or business in the U.S. and
    which have at least one nonresident partner.
  - Payments of patronage dividends where the amount received is not paid in
    money.
  - Payments made by certain foreign organizations.
  - Payments made to a nominee.

Payments of interest not generally subject to backup withholding include the
following:
  - Payments of interest on obligations issued by individuals. Note: You may be
    subject to backup withholding if this interest is $600 or more and is paid
    in the course of the payer's trade or business and you have not provided
    your correct taxpayer identification number to the payer.
  - Payments of tax-exempt interest (including exempt interest dividends under
    section 852).
  - Payments described in section 6049(b)(5) to nonresident aliens.
  - Payments on tax-free covenant bonds under section 1451.
  - Payments made by certain foreign organizations.
  - Payments made to a nominee.
Exempt payees described above should file Substitute Form W-9 to avoid possible
erroneous backup withholding. FILE THIS FORM WITH THE PAYER. FURNISH YOUR
TAXPAYER IDENTIFICATION NUMBER. WRITE "EXEMPT" ON THE FACE OF THE FORM AND
RETURN IT TO THE PAYER. IF THE PAYMENTS ARE INTEREST, DIVIDENDS, OR PATRONAGE
DIVIDENDS, ALSO SIGN AND DATE THE FORM.

Certain payments other than interest, dividends, and patronage dividends that
are not subject to information reporting are also not subject to backup
withholding. For details, see sections 6041, 6041A(a), 6045, and 6050A.

PRIVACY ACT NOTICE--Section 6109 requires most recipients of dividend, interest
or other payments to give taxpayer identification numbers to payers who must
report the payments to the IRS. The IRS uses the numbers for identification
purposes. Payers must be given the numbers whether or not recipients are
required to file tax returns. Beginning January 1, 1993, payers must generally
withhold 31% of taxable interest, dividend, and certain other payments to a
payee who does not furnish a taxpayer identification number to a payer. Certain
penalties may also apply.

PENALTIES

(1) PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER--If you fail
to furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not to willful neglect.

(2) FAILURE TO REPORT CERTAIN DIVIDEND AND INTEREST PAYMENTS--If you fail to
properly include any portion of an includible payment for interest, dividends,
or patronage dividends in gross income, such failure will be treated as being
due to negligence and will be subject to a penalty of 5% on any portion of an
underpayment attributable to that failure unless there is clear and convincing
evidence to the contrary.

(3) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING--If you make
a false statement with no reasonable basis which results in no imposition of
backup withholding, you are subject to a penalty of $500.

(4) CRIMINAL PENALTY FOR FALSIFYING INFORMATION--Falsifying certifications or
affirmations may subject you to criminal penalties including fines and/or
imprisonment.

                  FOR ADDITIONAL INFORMATION CONTACT YOUR TAX
                  CONSULTANT OR THE INTERNAL REVENUE SERVICE.

<PAGE>   1
                                                                Exhibit (a)(9)



                                      [LOGO]

July 12, 1999


To Holders of DuPont Stock in the DuPont Photomasks, Inc. 401(k) Retirement Plan
("DPI Plan")

The DuPont Company is offering it's shareholders the opportunity to exchange
("tender") their holdings of DuPont common stock for Conoco Class B common
stock. The shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you hold in your DPI Plan
account. Note: If you own shares of DuPont stock other than in the DPI Plan, you
will receive separate mailings relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit for exchange ("tender") all or only part of your holdings of
DuPont stock by giving directions to The 401(k) Company. If you tender only a
part of your holdings of DuPont stock, you have made an election not to tender
your remaining holdings of DuPont stock.

You may increase, decrease or cancel your election at any time during the
election period. You may change the number of shares tendered an unlimited
number of times during the election period. If you submit more than one set of
instructions, the instructions that will be honored are those received closest
to the expiration of the election period.

The shares you tender must be stated as a specific number of whole shares. In
other words, you may not tender dollar amounts, partial shares or a percentage
of your holdings.

     THE ELECTION PERIOD EXPIRES AT 5:00 P.M.CDT, WEDNESDAY, AUGUST 4, 1999

Both the election period for the DPI Plan and the ability to increase, decrease
or cancel your election will expire at the time and date shown above, unless the
exchange offer is extended. Note: For accounting purposes, the DPI Plan election
period closes two days earlier than the election period for the general public.

Additionally, the exchange offer is conditioned upon the satisfaction of all
legal requirements and to conditions discussed in the Offering
Circular-Prospectus under "The Exchange Offer - Conditions for Completion of the
Exchange Offer."

                            IF YOUR HOLDINGS DECREASE

At the time the election period for the DPI Plan expires, your holdings of
DuPont stock in the DPI Plan may have changed. If the number of shares you hold
at the end of the election period is smaller than the number you tendered, that
smaller number of shares would be submitted for exchange.
<PAGE>   2
                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

The maximum number of DuPont shares that will be accepted under the exchange
offer is stated on the front cover of the Offering Circular-Prospectus. If more
shares than the maximum amount are tendered, the number of shares to be accepted
from each tendering stockholder will be reduced proportionately, as described in
the Offering Circular-Prospectus. Proportionate acceptance of DuPont shares
among all stockholders is called proration.

             TENDERING MAY AFFECT DPI PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (e.g., fund transfers, loans, withdrawals) from the close
of the election period until the Conoco shares are actually deposited in your
account. In general, transactions that do not involve DuPont stock should not be
affected. Contact The 401(k) Company at the phone number listed on the next page
for questions on transactions. It is anticipated that at least seven business
days after the expiration of the exchange offer period will be required for the
shares to be deposited.

             IF YOU DO NOT WANT TO TENDER ANY OF YOUR DUPONT SHARES

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. BY DOING NOTHING, YOU HAVE MADE AN ELECTION NOT TO TENDER YOUR
HOLDINGS OF DUPONT STOCK AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

               GIVE YOUR TENDER INSTRUCTIONS TO THE 401(K) COMPANY

An election to tender must be made either by mail or telephone. If you wish to
make an election by mail, a Tender Election Form is enclosed for you in the
front pocket of the large envelope you received.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent", D.F. King
& Co., Inc., has been hired to answer your general questions about the exchange
offer. Note: The agent cannot answer questions about your personal DPI Plan
account; only The 401(k) Company can do that.

                                  WHERE TO MAIL

If you wish to mail in your election, please complete the Tender Election Form
located in the front pocket of the large envelope you received and mail in the
enclosed envelope to:

                 DuPont Photomasks, Inc. 401(k) Retirement Plan
                              Participant Services
                                 P.O. Box 684067
                              Austin, TX 78768-4067

   THE 401(k) COMPANY MUST RECEIVE ALL WRITTEN ELECTION FORMS BY 5:00P.M.CDT,
                           WEDNESDAY, AUGUST 4, 1999.

                                       2
<PAGE>   3
                                  WHERE TO CALL

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
                                        Call                   Phone Number                  When to Call
- -------------------------------------------------------------------------------------------------------------------
<S>                            <C>                            <C>                   <C>
To exchange your shares
using the Voice Response         The 401(k) Company           1-800-777-401k        24 hours a day, 7 days a week
Unit(VRU)
- -------------------------------------------------------------------------------------------------------------------
To speak with a Participant
Services representative who                                                             Monday through Friday
can provide instructions         The 401(k) Company           1-800-777-401k           7:00a.m. to 7:00 p.m.CDT
and/or to exchange your
shares
- -------------------------------------------------------------------------------------------------------------------
If you have general
questions about  the            D.F. King & Co., Inc.         1-800-755-3105                Monday-Friday
exchange offer                 (the information agent)                                 8:00a.m.to 9:00p.m. EDT
                                                                                               Saturday
                                                                                       8:00a.m. to 5:00p.m. EDT
- -------------------------------------------------------------------------------------------------------------------
</TABLE>

PLEASE NOTE: IF YOU WISH TO WITHDRAW FROM THIS OFFER AFTER HAVING TENDERED YOUR
SHARES, YOU MUST SPEAK DIRECTLY WITH A PARTICIPANT SERVICES REPRESENTATIVE.

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you want to take part in the exchange offer, you are strongly encouraged to
make your election early. If you wait until near the end of the election period
to call, the phone system may be experiencing heavy call volume and you may not
be able to reach a representative before the election period expires. Also,
remember that if you choose to tender your shares by mail using the Tender
Election Form enclosed, The 401(k) Company must receive the Tender Election Form
by 5:00p.m.CDT, Wednesday, August 4, 1999.

                               THE CHOICE IS YOURS

This letter is NOT designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the DPI Plan and that you may participate. Please read
the Offering Circular-Prospectus carefully before making a decision. Also,
please refer to the attached Q&A document, which has been provided by the plan
sponsor.




Sincerely,



The 401(k) Company

                                       3
<PAGE>   4
                              QUESTIONS AND ANSWERS


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute Class B
         shares of Conoco stock to those DuPont shareholders who wish to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your DuPont shares unless you wish to do
         so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, you will be able to tender your shares
         either by mail or by telephone. If you wish to make an election by
         mail, a Tender Election Form is enclosed for you in the front pocket of
         this packet. To tender via telephone, call 1-800-777-401k to utilize
         the Voice Response Unit (VRU) or to speak with a Participant Services
         representative.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender in a specific number of whole shares. The
         401(k) Company cannot accept fractional shares, dollar amounts or
         percentages for these transactions.

         You cannot tender more shares of DuPont stock than you have in your DPI
         account at the time you call.

         Note: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.

Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE TENDER WINDOW, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY DPI ACCOUNT THAN I HAVE INSTRUCTED THE
         401(k) COMPANY TO TENDER?

A.5      The 401(k) Company will only tender available shares at the close of
         the election period, up to the maximum number that you specified should
         be tendered. For example, if you instructed The 401(k) Company to
         tender 100 shares and you only have 80 because you sold 20 during the
         election period to purchase another investment option, The 401(k)
         Company would only tender 80 shares on your behalf.

                                       4
<PAGE>   5
Q.6      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.6      While the election period is open, you may call with instructions to
         tender or change previously provided tender instructions.

         If the number of shares of DuPont stock in your account changes during
         the tender period and you want to change your tender instructions, you
         must call 1-800-777-401k to change your instructions. If you wish to
         withdraw from this offer after having tendered your shares, you must
         speak with a Participant Services representative.

Q.7      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.7      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.8      WILL THERE BE ANY AFFECT ON THE OPERATION OF MY DPI ACCOUNT EITHER
         DURING OR AFTER THE ELECTION PERIOD?

A.8                                 During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any affect on the operation of your account during the election
         period.

                                    After the election period
         If you do not tender any DuPont shares, there will not be any effect on
         the operation of your account after the election period.

         However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares actually are deposited in your DPI
         account. We expect the restricted period to last about seven business
         days, although it may be extended if necessary.

Q.9      WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN THE DPI
         PLAN?

A.9      While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within the DPI Plan. Any
         shares of Conoco stock that you elect to sell will be subject to the
         same sales rules that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be re-invested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to your account using your current
         Investment Direction.

                                       5
<PAGE>   6
Q.10     IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED
         FROM MY ACCOUNT IN KIND, THE SAME AS THAT OF DUPONT STOCK?

A.10     You will be permitted to receive your Conoco stock in kind (that is, as
         shares). However, Conoco stock will not be subject to the net
         unrealized appreciation (NUA) treatment that is available for DuPont
         stock.

Q.11     HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.11     There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets.

Q.12     MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.12     No, you may only acquire Conoco stock in the plan through the exchange.

Q.13     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.13     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day.

Q.14     IF I DO PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.14     Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, The 401(k) Company will send you a
         confirmation of the exchange.

                                       6
<PAGE>   7
                              TENDER ELECTION FORM

                          INSTRUCTIONS WITH RESPECT TO
                              THE OFFER TO EXCHANGE
                                    SHARES OF
           E.I. DU PONT DE NEMOURS AND COMPANY FOR SHARES OF CLASS B
                           COMMON STOCK OF CONOCO INC.


         The undersigned acknowledge(s) receipt of a letter from The 401(k)
Company enclosing the Offering Circular-Prospectus, dated July 12, 1999 (the
"Offering Circular"). E.I. du Pont de Nemours and Company, a Delaware
Corporation ("DuPont"), is offering it's shareholders the opportunity to
exchange their holding of DuPont common stock for Conoco Class B common stock.
The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular. This offer is
subject to the terms and conditions set forth in the Offering Circular. The
undersigned understand(s) that the Offer applies to Shares allocated to the
account of the undersigned in the DuPont Photomasks, Inc. 401(k) Retirement Plan
(the "Plan").

         This will instruct The 401(k) Company to tender the number of shares
indicated below (OR, IF NO NUMBER IS INDICATED, ALL SHARES) that are held for
the Plan account of the undersigned, upon the terms and subject to the
conditions set forth in the Offering Circular furnished to the undersigned.*

               ---------------------------------------------------
                        Number of Shares to be Tendered *
                             (Check one choice ONLY)
                              Please tender ALL shares
                           ---
                         Please tender          whole shares
                     ---               ---------
                             (ONLY IF LESS THAN ALL)

               ---------------------------------------------------




               ---------------------------------------------------
                                    SIGN HERE
                                    ---------

                    -----------------------------------------
                                    Signature


                    -----------------------------------------
                                      Date

                    -----------------------------------------
                                Please Print Name

                    -----------------------------------------
                                     Address

                    -----------------------------------------
                         Area Code and Telephone Number

                    -----------------------------------------
                                     Social
                                 Security Number
               ---------------------------------------------------



- -------------------
* Unless otherwise indicated, it will be assumed that all Shares in the
undersigned's Plan account are to be tendered.

       IF YOU USE THE MAIL OPTION, PLEASE REMEMBER IT MUST BE RECEIVED BY
                     5:00p.m.CDT, Wednesday, August 4, 1999.
               MAIL THIS FORM IN THE ENCLOSED REPLY ENVELOPE TO:

                  DuPont Photomasks, Inc. 401(k) Retirement Plan
                  Participant Services
                  P. O. Box 684067
                  Austin, TX 78768-4067
<PAGE>   8

July 12, 1999


To Participants in the PTI Savings Investment Plan (The Plan):

The DuPont Company is offering its stockholders the opportunity to exchange
("tender") their holdings of DuPont common stock for Conoco Class B common
stock. The shares will be exchanged without any brokerage fees or commissions.

The approximate number of Conoco shares you can receive for each share of DuPont
stock is shown on the front cover of the enclosed Offering Circular-Prospectus.
Note: If you own shares of DuPont stock other than in your PTI Plan account, you
will receive separate mailings relating to those shares.

IF YOU DO NOT HOLD DUPONT STOCK IN YOUR PTI SAVINGS INVESTMENT PLAN, YOU DO NOT
NEED TO TAKE ANY ACTION WITH REGARD TO THIS EXCHANGE OFFER.


 GIVE YOUR TENDER INSTRUCTIONS BY RETURNING THE EXCHANGE OFFER INSTRUCTION FORM

As a participant in your Savings Investment Plan, you are strongly encouraged to
direct Vanguard Fiduciary Trust Company, the trustee of your plan, to tender, or
not to tender, the DuPont common stock held in your Plan account. In order to
direct Vanguard, you should return the enclosed "Exchange Offer Instruction
Form."

Please note that the terms of your Plan generally provide that if you do not
provide a timely instruction, the trustee will not tender your shares in
response to the Offer. Thus, if you do not respond, Vanguard will not tender
your shares. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.


    THE PLAN ELECTION PERIOD EXPIRES AT 12 NOON EDT, TUESDAY, AUGUST 3, 1999

The Plan election period ends on Tuesday, August 3rd at 12 noon, in order for
the tabulation of the tender instructions to be completed prior to the
expiration date. In other words, your exchange offer instruction form must be
received by 12 noon, August 3rd, in order to participate in the exchange offer.
Note: For accounting and tabulation purposes, the plan election period closes
three days earlier than the election period for the general public.
<PAGE>   9
Additionally, the offer is conditioned upon the satisfaction of all legal
requirements and conditions discussed in the Offering Circular-Prospectus.

                             HOW MUCH YOU MAY TENDER

You may tender all or only part of your holdings of DuPont stock in your Plan.
The amount you tender may be increased, decreased or canceled at any time during
the election period. To increase or decrease the percentage that you want to
tender, you must complete and return a new Exchange Offer Instruction Form.

                      IF YOUR HOLDINGS DECREASE OR INCREASE

At the time the election period for the PTI Savings Investment Plan expires,
your holdings of DuPont stock in your plan account may have changed. Timely
instructions provided to Vanguard will be followed with respect to shares held
in your account as of the end of the Plan election period. For example, if
additional common stock is allocated to your Plan account before the end of the
Plan election period, the instructions you give will also be followed with
respect to those additional shares.

      TRANSACTIONS IN PTI'S DUPONT STOCK FUND WILL BE TEMPORARILY IMPACTED

All holders in the DuPont stock fund will be prohibited from doing any new
financial transactions in the stock fund from the close of the election period
until the Conoco shares are actually deposited in your Plan account. It is
anticipated that at least ten business days after the expiration of the offer
will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares.
BY DOING NOTHING, YOU HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF
DUPONT STOCK AND YOUR SHARES OF DUPONT STOCK WILL NOT BE TENDERED.


             ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE TENDER

In keeping with securities industry practice, an "information agent", D.F. King
& Co., Inc. has been hired to answer your general questions about the exchange
offer. Note: The agent cannot answer questions about your PTI Plan account; only
Vanguard can do that.



                                       2
<PAGE>   10
                                  WHERE TO CALL

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------
                          CALL          PHONE NUMBERS      WHEN TO CALL

- ---------------------------------------------------------------------------
<S>                 <C>                 <C>               <C>
    IF YOU HAVE         Vanguard        1-800-523-1188    Monday - Friday
 GENERAL QUESTIONS                       in the U.S.       8:30 a.m. - 9
  ABOUT YOUR PTI                         (toll free)         p.m. EDT
      ACCOUNT                                 or
                                        1-610-669-1000
                                        international
                                        (call collect)
- ---------------------------------------------------------------------------
IF YOU HAVE          D.F. King & Co.,   1-800-755-3105    Monday - Friday
QUESTIONS ABOUT           Inc.           in the U.S.      8 a.m. - 9 p.m.
THE EXCHANGE OFFER  (the information     (toll free)            EDT
                         agent)               or
                                        1-212-269-5550       Saturday
                                        international     8 a.m. - 5 p.m.
                                        (call collect)          EDT
- ---------------------------------------------------------------------------
</TABLE>


                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your DuPont
shares. It simply is intended to inform you that there is a program for
tendering shares of DuPont stock in the PTI Savings Investment Plan and that you
may participate. Please read the Offering Circular-Prospectus carefully before
making a decision. Also, please refer to the attached Q&A document which has
been provided by the plan sponsor.

                          YOUR DECISION IS CONFIDENTIAL

All instructions received by Vanguard from individual participants will be held
in confidence and will not be divulged to any person, including Protein
Technologies International, Inc., the DuPont Company or any of their respective
directors, officers, employees or affiliates.


Sincerely,
Vanguard Fiduciary Trust Company



                                       3
<PAGE>   11
                              QUESTIONS AND ANSWERS


Q.1   WHAT IS THE EXCHANGE OFFER?

A.1   The exchange offer is the mechanism by which DuPont will dispose of its
      remaining ownership in Conoco Inc. DuPont will distribute Class B shares
      of Conoco stock to those DuPont shareholders who agree to exchange their
      DuPont stock for Conoco stock. This is a completely voluntary process on
      the part of DuPont shareholders. You are not required to exchange any of
      your DuPont shares unless you wish to do so.

Q.2   HOW DO I DECIDE WHETHER TO TENDER?

A.2   This package includes an Offering Circular-Prospectus for Conoco Inc. You
      should review all this information just as you would with any other
      investment you are considering and decide whether it is a good option for
      you. You should also consult with your tax and/or investment advisor
      before making a final decision.


Q.3   HOW DO I TENDER?

A.3   During the election period, please promptly complete, sign and date the
      enclosed "Exchange Offer Instruction Form" and mail it to Vanguard in the
      enclosed postage-paid reply envelope.

      IF YOU PREFER, YOU MAY FAX A COMPLETED AND SIGNED INSTRUCTION FORM TO
      VANGUARD'S ATTENTION AT 1-888-451-8683.

      Important Notes:
      While the tender window is open, you may call Vanguard to request an
      additional instruction form in order to change previously-provided tender
      instructions. To change your tender instructions, you must call Vanguard
      to request an additional exchange offer instruction form before the end of
      the Plan election period.


Q.4   WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.4   In the event that more shares of DuPont stock are tendered than can be
      accommodated in the offer, the tender instructions for everyone will be
      reduced on a pro rata basis.


                                       4
<PAGE>   12
Q.5   WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN THE PLAN?

A.5   While you are free to sell the Conoco stock at any time, you may not
      purchase additional shares of Conoco stock within the Plan. Any shares of
      Conoco stock that you elect to sell will be subject to the same sales
      rules that apply to DuPont stock. The Conoco Stock Fund will be
      administered in the same manner as the DuPont Stock Fund. Distributions or
      exchanges out of the Fund will be valued at the unit price of the Fund for
      that day.

      In addition, dividends paid on Conoco stock will NOT be re-invested to
      purchase additional Conoco shares in your account. Instead, these
      dividends will be allocated to your account using your current investment
      direction.

Q.6   IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED FROM MY
      ACCOUNT IN KIND THE SAME AS THAT OF DUPONT STOCK?

A.6   No, since Conoco stock is not an employer security like DuPont stock in
      the Plan, Conoco stock will not be subject to the favorable net unrealized
      appreciation (NUA) treatment that may be available if you eventually take
      an "in-kind" distribution of DuPont stock from the Plan. However, you will
      be permitted to receive your Conoco stock in-kind (that is, as shares).

Q.7   HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.7   There is currently no plan to limit the time you may hold Conoco Class B
      stock except for the general plan or regulatory limits that apply to all
      plan assets.

Q.8   MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.8   No, you may only acquire Conoco stock in the Plan through the exchange
      offer or other offer of Conoco stock to DuPont stockholders.

Q.9   IF I DO PARTICIPATE IN THE EXCHANGE OFFER, WILL I RECEIVE ANYTHING
      CONFIRMING THE EXCHANGE?

A.9   Yes, after the exchange offer is completed and shares of Conoco Class B
      stock are in your account, Vanguard will send you a confirmation of the
      exchange.


                                       5
<PAGE>   13
                                                                  FIRST CLASS
                                                                  U.S. POSTAGE
[VANGUARD LOGO]                                                       PAID
                                                                     PROXY
                                                                   TABULATOR



                        EXCHANGE OFFER INSTRUCTION FORM

        PROTEIN TECHNOLOGIES INTERNATIONAL INC. SAVINGS INVESTMENT PLAN

               BEFORE COMPLETING THIS FORM, PLEASE CAREFULLY READ
                          THE ACCOMPANYING INFORMATION

     In response to the offer of the DuPont Company to exchange shares of DuPont
common stock for shares of Conoco Class B common stock (subject to the terms and
conditions of the enclosed "Offering Circular-Prospectus" (the "Offer), I hereby
instruct Vanguard Fiduciary Trust Company to exchange or not to exchange my
DuPont common stock shares allocated to my Plan account in response to the Offer
as follows (PLEASE CHECK ONE BOX BELOW AND COMPLETE):

     Your instructions to Vanguard will be confidentially tabulated and will not
be divulged to anyone at the DuPont Company, or Protein Technologies
International, Inc. You may fax your completed and signed Form to Vanguard's
attention at 1-888-451-8683 (please be sure to fax both sides of the Form).

           Please fold and detach card at perforation before mailing

[  ]  I DIRECT VANGUARD TO EXCHANGE ALL OF THE SHARES CREDITED TO MY PLAN
      ACCOUNT IN RESPONSE TO THE OFFER.

[  ]  I DIRECT VANGUARD TO EXCHANGE ______ PERCENT (INSERT A WHOLE PERCENTAGE
      LESS THAN 100%) OF THE SHARES CREDITED TO MY PLAN ACCOUNT IN RESPONSE TO
      THE OFFER.

[  ]  I DIRECT VANGUARD NOT TO EXCHANGE ANY OF THE SHARES CREDITED TO MY PLAN
      ACCOUNT IN RESPONSE TO THE OFFER.

 Note: The terms of the Plan generally provide that if you do not respond,
       Vanguard will not tender your shares. Instruction cards signed and
       returned without a box checked will be incomplete and, therefore, will be
       treated as if no response was provided.

     If you have any questions about the procedures for responding to Vanguard,
please contact Vanguard Participant Services at 1-800-523-1188.

THIS FORM SHOULD BE RECEIVED BY 12:00, AUGUST 3, 1999 (unless the Offer is
extended).


                                         _____________________________________
                                         Signature

                                         _____________________________________
THIS LABEL IS FOR MIS TYPESETTING        Please print name
PURPOSES ONLY!
VANGUARD TENDER OFFER FOR                _____________________________________
PROTEIN INTERNATIONAL                    Social Security Number
(FUND 430) (PROTEINT)
ORIGINAL FRONT 6-17-99                   _____________________________________
REVISION 1 6-25-99                       Date
REVISION 2 7-7-99
REVISION 3 7-8-99                        _____________________________________
                                         Daytime Phone Number


<PAGE>   14
                                                                          [LOGO]
                                                              CIGNA Retirement's
                                                             Investment Services


JULY 12, 1999


To Participants in the DuPont Flooring Systems 401(k) Plan:

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your
401(k) account. Note: If you own shares of DuPont stock other than in your
401(k) account, you will receive separate mailings relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD DUPONT STOCK IN 401(k), YOU DO NOT NEED TO TAKE ANY ACTION
WITH REGARD TO THIS EXCHANGE OFFER.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont Stock.

The shares you tender must be stated as a specific number of whole shares. In
other words, you may not express your tender as a percentage of your holdings or
as a dollar amount.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your election and then make a new
one.

      THE ELECTION PERIOD EXPIRES AT 3:00 P.M. EDT, TUESDAY, AUGUST 3, 1999

Both the election period for the 401(k) Plan and the ability to cancel your
election will expire at the time and date shown above, unless the exchange offer
is extended. Note: For accounting purposes, the 401(k) election period closes 3
days earlier than the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.

                                       1
<PAGE>   15
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period for the 401(k) Plan expires, your holdings of
DuPont stock in the Plan may have changed (for example, through fund transfers
or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be offered
for exchange.

                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

The maximum number of shares of DuPont stock that will be accepted under the
exchange offer is stated on the front cover of the Offering Circular-Prospectus.
If more shares than the maximum amount are tendered, the number of shares to be
accepted from tendering stockholders will be reduced proportionately, as
described in the Offering Circular-Prospectus. Proportionate acceptance of
DuPont shares from stockholders is called proration.

            TENDERING WILL AFFECT SOME PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares actually are deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call CIGNA's AnswerLine. It is
anticipated that at least seven business days after the expiration of the offer
will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. BY DOING NOTHING, YOU HAVE MADE AN ELECTION NOT TO TENDER YOUR
HOLDINGS OF DUPONT STOCK AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                      GIVE YOUR TENDER INSTRUCTIONS BY MAIL

Attached is your instruction form. You will use the enclosed envelope addressed
to D.F. King & Co., Inc. to send your tender instructions for tabulation. The
address of D.F. King on the envelope is Wall Street Station - P.O. Box 411, New
York, NY 10269-0069.

                                       2
<PAGE>   16
         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D.F. King
& Co., Inc., has been hired to answer general questions about the exchange
offer. Note: The agent cannot answer questions about your personal 401(k)
account; only CIGNA can do that.


                                  WHERE TO CALL
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------
                                       CALL                      PHONE                       WHEN
- ---------------------------------------------------------------------------------------------------------
<S>                           <C>                            <C>                      <C>
FOR QUESTIONS REGARDING                CIGNA                 1-800-253-2287             Monday-Friday
YOUR DUPONT STOCK IN YOUR                                                             8 a.m.-10 p.m. EDT
401(K) PLAN
                                                                                           Saturday
                                                                                          9 a.m.-1pm
- ---------------------------------------------------------------------------------------------------------
If you have general                    Call                  1-800-755-3105            Monday - Friday
questions about the            D.F. King & Co., Inc.          (toll free)             8 a.m. - 9 p.m. EDT
exchange offer                (the information agent)              or                      Saturday
                                                              212-269-5550            8 a.m. - 5 p.m. EDT
                                                               (collect)
- ---------------------------------------------------------------------------------------------------------
</TABLE>

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you want to take part in the tender offer, you are strongly encouraged to
make your election early. If you wait until near the end of the election period,
you risk your instruction form not being received prior to the time the election
period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the 401(k) Plan and that you may participate. Please
read the Offering Circular-Prospectus carefully before making a decision. Also,
please refer to the attached Q&A document, which has been provided by the plan
sponsor.



Sincerely,


CG Trust Company, Trustee for DuPont Flooring Systems, Inc.

                                       3
<PAGE>   17
                              QUESTIONS AND ANSWERS

           TENDERING SHARES IN THE DUPONT FLOORING SYSTEMS 401(K) PLAN


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont unless you wish to do
         so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      The election period will be open from July 12th through August 3rd at
         3 p.m. EDT.

         During this period, D.F. King & Co., Inc. will only accept your tender
         instructions by mail using the enclosed form and envelope. YOU CANNOT
         PARTICIPATE IN THE EXCHANGE OFFER THROUGH THE CIGNA ANSWERLINE.

         Important Notes:

         While the election period is open, you may mail your instructions to
         tender or change previously provided tender instructions. You cannot
         tender more shares of DuPont stock than you have in your account at the
         time you mail your instruction form, nor can you tender more shares at
         the close of the election period than are in your account at that time.
         Please do not wait until the last day to mail your instructions. If the
         number of shares of DuPont stock in your account changes during the
         tender period and you want to change your tender instructions, you must
         complete another form and mail it to D.F. King & Co., Inc. Indicate on
         the form that it is a change to previously submitted instructions.

                                       4
<PAGE>   18
Q.4      WHAT HAPPENS IF, AT THE CLOSE OF THE TENDER WINDOW, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY 401(k) ACCOUNT THAN I HAVE INSTRUCTED D.F.
         KING TO TENDER?

A.4      CG Trust Company will only tender available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you submitted instructions to D.F. King to
         tender 100 shares and you only have 80 because you sold 20 during the
         election period to purchase another investment option, CG Trust would
         only tender 80 shares on your behalf. On the other hand, if you
         submitted instructions to D.F. King to tender 100 shares and you have
         150 because you purchased additional shares with your monthly 401(k)
         contribution, CG Trust would only tender 100 shares on your behalf. You
         would need to provide D.F. King with a second instruction to tender the
         additional 50 shares.

Q.5      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.5      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15% and you submitted instructions to D.F. King to
         tender 100 shares on your behalf, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.6      IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.6      Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, CIGNA will send you a confirmation of the
         exchange.

Q.7      WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN THE
         401(k) PLAN?

A.7      While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within the 401(k) Plan. Any
         shares of Conoco stock that you elect to sell will be subject to the
         same sales rules and fees that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be re-invested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to the Guaranteed Income Fund under your
         account.

                                       5
<PAGE>   19
Q.8      HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.8      There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets. The plan sponsor periodically reviews the plan's
         investment options and may change the options offered under the plan
         from time to time.

Q.9      MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.9      No. You may acquire Conoco stock in the plan only through the exchange.

Q.10     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.10     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day (the same
         method that is used for determining the sale price of DuPont stock in
         the 401(k) Plan). The sales commission for Conoco stock will be the
         same as that for DuPont stock, $.06 per share.

Q.11     CAN I GET SHARES OF CONOCO STOCK OUT OF THE PLAN AS SHARES, I.E., IN
         KIND?

A.11     No. Shares of stock must first be liquidated with the distribution
         being made in cash.

                                       6
<PAGE>   20
                                MAKING A DECISION

The diagram on this page outlines what the participants should do if they choose
       to participate or decline to participate in the exchange offer.


                                       7
<PAGE>   21
                                INSTRUCTION FORM
                                 WITH RESPECT TO
                              THE OFFER TO EXCHANGE
                                SHARES OF CLASS B
                           COMMON STOCK OF CONOCO INC.
                                FOR EACH SHARE OF
                      E.I. DU PONT DE NEMOURS AND COMPANY


         The undersigned acknowledge(s) receipt of a letter from CG Trust
Company, as Trustee, enclosing the Offering Circular-Prospectus, dated July 12,
1999 (the "Offering Circular") pursuant to an offer by E.I. du Pont de Nemours
and Company, a Delaware Corporation ("DuPont"), to exchange shares of DuPont
Common Stock for shares of Conoco Class B common stock under the terms and
conditions listed in the Offering Circular. The undersigned understand(s) that
the Offer applies to shares allocated to the account of the undersigned in the
DuPont Flooring Systems, Inc. 401(k) Plan (the "Plan").

         This will instruct you, as Trustee for the Plan, to instruct your
custodian to tender the number of shares indicated below (OR, IF NO NUMBER IS
INDICATED, ALL SHARES) that are held for the Plan account of the undersigned,
upon the terms and subject to the conditions set forth in the Offering Circular
furnished to the undersigned.*

               --------------------------------------------------
                        Number of Shares to be Tendered *
                             (Check one choice ONLY)
                           Please tender ALL shares
                        ---
                           Please tender          shares
                       ---               ---------
                             (ONLY IF LESS THAN ALL)

               --------------------------------------------------




              ----------------------------------------------------
                                    SIGN HERE

                 ----------------------------------------------

                 ----------------------------------------------
                                  Signature(s)

                 ----------------------------------------------
                                      Date


                 ----------------------------------------------
                              Please Print Name(s)

                 ----------------------------------------------
                                     Address

                 ----------------------------------------------
                         Area Code and Telephone Number

                 ----------------------------------------------
                         Tax, Identification, or Social
                                 Security Number
              ----------------------------------------------------



- -------------------
* Unless otherwise indicated, it will be assumed that all shares in the
undersigned's Plan account are to be tendered.

                MAIL THIS FORM IN THE ENCLOSED REPLY ENVELOPE TO:

                  D. F. King & Co., Inc.
                  Wall Street Station - P.O. Box 411
                  New York, NY 10269-0069
                  Attn:  Broker/Nominee Department
<PAGE>   22
                                                                 Exhibit (a)(9)
                           [MERRILL LYNCH LETTERHEAD]




July 12, 1999


To:  Participants in the Optimum Quality Grains, L.L.C. Retirement and Savings
     Plan (Optimum Quality Grains Plan)

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your
Optimum Quality Grains Plan account. Note: If you own shares of DuPont stock
other than in your Optimum Quality Grains Plan account, you will receive
separate mailings relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD SHARES OF DUPONT STOCK IN YOUR OPTIMUM QUALITY GRAINS PLAN
ACCOUNT, YOU DO NOT NEED TO TAKE ANY ACTION WITH REGARD TO THIS MAILING.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 3 P.M. EDT, THURSDAY, AUGUST 5, 1999

Both the election period and the ability to change or cancel your election will
expire at the time and date shown above, unless the exchange offer is extended.
Note: For accounting purposes, the election period closes one day earlier than
the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.



                                      -1-
<PAGE>   23
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period expires, your holdings of DuPont stock may have
changed (for example, through fund transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
DuPont shares that will be accepted under the exchange offer is limited. If more
shares than the maximum amount are tendered, the number of shares to be accepted
from each tendering stockholder will be reduced among tendering stockholders
according to the procedures in the Offering Circular-Prospectus. Proportionate
acceptance of shares of DuPont stock among all stockholders is called proration.

            TENDERING WILL AFFECT SOME PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares are actually deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular phone
number. It is anticipated that at least seven business days after the expiration
of the offer will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections will be taken only over these special lines. If you call the regular
Optimum Quality Grains line, you will be asked to call back on the special
tender phone line.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal
Optimum Quality Grains Plan account; only Merrill Lynch can do that.





                                      -2-
<PAGE>   24
                                  WHERE TO CALL

<TABLE>
<CAPTION>

                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
                                       ----               ---------------------          ------------
<S>                           <C>                         <C>                      <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            7 a.m. - 8 p.m. EDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR ACCOUNT                                                  732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)               Thursday
                                                                                         at 3 p.m. EDT


IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            8 a.m. - 9 p.m. EDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 8 a.m. - 5 p.m. EDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
</TABLE>

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the plan and that you may participate. Please read the
Offering Circular-Prospectus carefully before making a decision. Also, please
refer to the attached Q&A document which has been provided by the plan sponsor.


Sincerely,


Merrill Lynch Group Employee Services




                                      -3-
<PAGE>   25
                              QUESTIONS AND ANSWERS
                         (provided by the plan sponsor)

               TENDERING SHARES IN THE OPTIMUM QUALITY GRAINS PLAN


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont stock unless you wish
         to do so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL NUMBERS TO GIVE TENDER INSTRUCTIONS. You
         cannot participate in the exchange offer through the regular phone
         line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.




                                      -4-
<PAGE>   26
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE ELECTION PERIOD, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY ACCOUNT THAN I HAVE INSTRUCTED MERRILL
         LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you only have 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY ACCOUNT?

A.6      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.7      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.7      While the election period is open, you may change or revoke a
         previously provided tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone number again.

         YOU MUST CALL THE SPECIAL PHONE NUMBER TO MAKE CHANGES. You cannot make
         changes by calling the regular phone line.

Q.8      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.8      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.9      WILL THERE BE ANY EFFECT ON THE OPERATION OF MY ACCOUNT EITHER DURING
         OR AFTER THE ELECTION PERIOD?

A.9                           During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                            After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.


                                      -5-
<PAGE>   27
         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares are actually deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.10     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.10     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers can
         still be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular phone number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

Q.11     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.11     Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.12     WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN MY
         ACCOUNT?

A.12     While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within your plan account.
         Any shares of Conoco stock that you elect to sell will be subject to
         the same sales rules and fees that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be reinvested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment direction.

Q.13     IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED FROM
         MY ACCOUNT IN KIND THE SAME AS THAT OF DUPONT STOCK?

A.13     You will be permitted to receive your Conoco stock in kind (that is, as
         shares). However, Conoco stock will not be subject to the net
         unrealized appreciation (NUA) treatment that is available for DuPont
         stock.




                                      -6-
<PAGE>   28
Q.14     HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.14     There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets. The plan sponsor periodically reviews the plan's
         investment options and may change the options offered under the plan
         from time to time.

Q.15     MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.15     No, you may acquire Conoco stock in the plan only through the exchange.

Q.16     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.16     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day (the same
         method that is used for determining the sale price of DuPont stock in
         the plan). The sales commission for Conoco stock will be the same as
         that for DuPont stock, $.07 per share.




                                      -7-
<PAGE>   29
                               MAKING A DECISION


The diagram on this page outlines what the participants should do if they choose
       to participate or decline to participate in the exchange offer.










                                      -8-
<PAGE>   30
                           [Merrill Lynch Letterhead]




July 12, 1999


To:      Participants in the Qualicon Retirement and Savings Plan
         (Qualicon Savings Plan)

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your
Qualicon Savings Plan account. Note: If you own shares of DuPont stock other
than in your Qualicon Savings Plan account, you will receive separate mailings
relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD SHARES OF DUPONT STOCK IN YOUR QUALICON SAVINGS PLAN ACCOUNT,
YOU DO NOT NEED TO TAKE ANY ACTION WITH REGARD TO THIS MAILING.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 3 P.M. EDT, THURSDAY, AUGUST 5, 1999

Both the election period and the ability to change or cancel your election will
expire at the time and date shown above, unless the exchange offer is extended.
Note: For accounting purposes, the election period closes one day earlier than
the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.




                                      -1-
<PAGE>   31
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period expires, your holdings of DuPont stock may have
changed (for example, through fund transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
DuPont shares that will be accepted under the exchange offer is limited. If more
shares than the maximum amount are tendered, the number of shares to be accepted
from each tendering stockholder will be reduced among tendering stockholders
according to the procedures in the Offering Circular-Prospectus. Proportionate
acceptance of shares of DuPont stock among all stockholders is called proration.

            TENDERING WILL AFFECT SOME PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares are actually deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular phone
number. It is anticipated that at least seven business days after the expiration
of the offer will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections will be taken only over these special lines. If you call the regular
Qualicon Savings Plan line, you will be asked to call back on the special tender
phone line.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal
Qualicon Savings Plan account; only Merrill Lynch can do that.




                                      -2-
<PAGE>   32
                                  WHERE TO CALL

<TABLE>
<CAPTION>
                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
                                       ----               ---------------------          ------------
<S>                           <C>                         <C>                       <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            7 a.m. - 8 p.m. EDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR ACCOUNT                                                  732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)               Thursday
                                                                                         at 3 p.m. EDT


IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            8 a.m. - 9 p.m. EDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 8 a.m. - 5 p.m. EDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
</TABLE>


                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the plan and that you may participate. Please read the
Offering Circular-Prospectus carefully before making a decision. Also, please
refer to the attached Q&A document which has been provided by the plan sponsor.


Sincerely,


Merrill Lynch Group Employee Services




                                      -3-
<PAGE>   33
                              QUESTIONS AND ANSWERS
                         (provided by the plan sponsor)

                  TENDERING SHARES IN THE QUALICON SAVINGS PLAN


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont stock unless you wish
         to do so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL NUMBERS TO GIVE TENDER INSTRUCTIONS. You
         cannot participate in the exchange offer through the regular phone
         line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.





                                      -4-
<PAGE>   34
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE ELECTION PERIOD, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY ACCOUNT THAN I HAVE INSTRUCTED MERRILL
         LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you only have 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY ACCOUNT?

A.6      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.7      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.7      While the election period is open, you may change or revoke a
         previously provided tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone number again.

         YOU MUST CALL THE SPECIAL PHONE NUMBER TO MAKE CHANGES. You cannot make
         changes by calling the regular phone line.

Q.8      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.8      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.9      WILL THERE BE ANY EFFECT ON THE OPERATION OF MY ACCOUNT EITHER DURING
         OR AFTER THE ELECTION PERIOD?

A.9                                 During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                                    After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.



                                      -5-
<PAGE>   35
         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares are actually deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.10     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.10     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers can
         still be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular phone number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

Q.11     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.11     Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.12     WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN MY
         ACCOUNT?

A.12     While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within your plan account.
         Any shares of Conoco stock that you elect to sell will be subject to
         the same sales rules and fees that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be reinvested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment direction.

Q.13     IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED FROM
         MY ACCOUNT IN KIND THE SAME AS THAT OF DUPONT STOCK?

A.13     You will be permitted to receive your Conoco stock in kind (that is, as
         shares). However, Conoco stock will not be subject to the net
         unrealized appreciation (NUA) treatment that is available for DuPont
         stock.



                                      -6-
<PAGE>   36
Q.14     HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.14     There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets. The plan sponsor periodically reviews the plan's
         investment options and may change the options offered under the plan
         from time to time.

Q.15     MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.15     No, you may acquire Conoco stock in the plan only through the exchange.

Q.16     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.16     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day (the same
         method that is used for determining the sale price of DuPont stock in
         the plan). The sales commission for Conoco stock will be the same as
         that for DuPont stock, $.07 per share.






                                      -7-
<PAGE>   37
                               MAKING A DECISION


The diagram on this page outlines what the participants should do if they choose
       to participate or decline to participate in the exchange offer.








                                      -8-
<PAGE>   38
                           [Merrill Lynch Letterhead]



July 12, 1999


To:      Participants in the Thrift Plan for Employees of Sentinel
         Transportation Company (Sentinel Thrift Plan)

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your
Sentinel Thrift Plan account. Note: If you own shares of DuPont stock other than
in your Sentinel Thrift Plan account, you will receive separate mailings
relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD SHARES OF DUPONT STOCK IN YOUR SENTINEL THRIFT PLAN ACCOUNT,
YOU DO NOT NEED TO TAKE ANY ACTION WITH REGARD TO THIS MAILING.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 3 P.M. EDT, THURSDAY, AUGUST 5, 1999

Both the election period and the ability to change or cancel your election will
expire at the time and date shown above, unless the exchange offer is extended.
Note: For accounting purposes, the election period closes one day earlier than
the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.




                                      -1-
<PAGE>   39
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period expires, your holdings of DuPont stock may have
changed (for example, through fund transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
DuPont shares that will be accepted under the exchange offer is limited. If more
shares than the maximum amount are tendered, the number of shares to be accepted
from each tendering stockholder will be reduced among tendering stockholders
according to the procedures in the Offering Circular-Prospectus. Proportionate
acceptance of shares of DuPont stock among all stockholders is called proration.

            TENDERING WILL AFFECT SOME PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares are actually deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular phone
number. It is anticipated that at least seven business days after the expiration
of the offer will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections will be taken only over these special lines. If you call the regular
Sentinel Thrift Plan line, you will be asked to call back on the special tender
phone line.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal
Sentinel Thrift Plan account; only Merrill Lynch can do that.





                                      -2-
<PAGE>   40
                                  WHERE TO CALL

<TABLE>
<CAPTION>
                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
                                       ----               ---------------------          ------------
<S>                           <C>                         <C>                       <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            7 a.m. - 8 p.m. EDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR ACCOUNT                                                  732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)               Thursday
                                                                                         at 3 p.m. EDT


IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            8 a.m. - 9 p.m. EDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 8 a.m. - 5 p.m. EDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
</TABLE>


                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the plan and that you may participate. Please read the
Offering Circular-Prospectus carefully before making a decision. Also, please
refer to the attached Q&A document which has been provided by the plan sponsor.


Sincerely,


Merrill Lynch Group Employee Services






                                      -3-
<PAGE>   41
                              QUESTIONS AND ANSWERS
                         (provided by the plan sponsor)

                  TENDERING SHARES IN THE SENTINEL THRIFT PLAN


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont stock unless you wish
         to do so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL NUMBERS TO GIVE TENDER INSTRUCTIONS. You
         cannot participate in the exchange offer through the regular phone
         line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.




                                      -4-
<PAGE>   42
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE ELECTION PERIOD, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY ACCOUNT THAN I HAVE INSTRUCTED MERRILL
         LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you only have 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY ACCOUNT?

A.6      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.7      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.7      While the election period is open, you may change or revoke a
         previously provided tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone number again.

         YOU MUST CALL THE SPECIAL PHONE NUMBER TO MAKE CHANGES. You cannot make
         changes by calling the regular phone line.

Q.8      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.8      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.9      WILL THERE BE ANY EFFECT ON THE OPERATION OF MY ACCOUNT EITHER DURING
         OR AFTER THE ELECTION PERIOD?

A.9                               During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                                  After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.




                                      -5-
<PAGE>   43
         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares are actually deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.10     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.10     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers can
         still be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular phone number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

Q.11     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.11     Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.12     WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN MY
         ACCOUNT?

A.12     While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within your plan account.
         Any shares of Conoco stock that you elect to sell will be subject to
         the same sales rules and fees that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be reinvested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment direction.

Q.13     IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED FROM
         MY ACCOUNT IN KIND THE SAME AS THAT OF DUPONT STOCK?

A.13     You will be permitted to receive your Conoco stock in kind (that is, as
         shares). However, Conoco stock will not be subject to the net
         unrealized appreciation (NUA) treatment that is available for DuPont
         stock.




                                      -6-
<PAGE>   44
Q.14     HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.14     There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets. The plan sponsor periodically reviews the plan's
         investment options and may change the options offered under the plan
         from time to time.

Q.15     MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.15     No, you may acquire Conoco stock in the plan only through the exchange.

Q.16     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.16     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day (the same
         method that is used for determining the sale price of DuPont stock in
         the plan). The sales commission for Conoco stock will be the same as
         that for DuPont stock, $.07 per share.





                                      -7-
<PAGE>   45
                              MAKING A DECISION


The diagram on this page outlines what the participants should do if they choose
       to participate or decline to participate in the exchange offer.








                                      -8-
<PAGE>   46
                           [Merrill Lynch Letterhead]




July 12, 1999


To:      Participants in the DuPont Savings and Investment Plan (SIP)

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your SIP
account. Note: If you own shares of DuPont stock other than in your SIP account,
you will receive separate mailings relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD SHARES OF DUPONT STOCK IN YOUR SIP ACCOUNT, YOU DO NOT NEED
TO TAKE ANY ACTION WITH REGARD TO THIS MAILING.

                 HOW MANY SHARES OF DUPONT STOCK YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 3 P.M. EDT, THURSDAY, AUGUST 5, 1999

Both the election period and the ability to change or cancel your election will
expire at the time and date shown above, unless the exchange offer is extended.
Note: For accounting purposes, the election period closes one day earlier than
the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.




                                      -1-
<PAGE>   47
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period expires, your holdings of DuPont stock may have
changed (for example, through fund transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
DuPont shares that will be accepted under the exchange offer is limited. If more
shares than the maximum amount are tendered, the number of shares to be accepted
from each tendering stockholder will be reduced among tendering stockholders
according to the procedures in the Offering Circular-Prospectus. Proportionate
acceptance of shares of DuPont stock among all stockholders is called proration.

            TENDERING WILL AFFECT SOME PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited from doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares are actually deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular phone
number. It is anticipated that at least seven business days after the expiration
of the offer will be required for the shares to be deposited.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections will be taken only over these special lines. If you call the regular
SIP line, you will be asked to call back on the special tender phone line.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal SIP
account; only Merrill Lynch can do that.




                                      -2-
<PAGE>   48
                                  WHERE TO CALL


<TABLE>
<CAPTION>
                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
                                       ----               ---------------------          ------------
<S>                           <C>                         <C>                       <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            7 a.m. - 8 p.m. EDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR ACCOUNT                                                  732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)               Thursday
                                                                                         at 3 p.m. EDT


IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            8 a.m. - 9 p.m. EDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 8 a.m. - 5 p.m. EDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
</TABLE>


                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the plan and that you may participate. Please read the
Offering Circular-Prospectus carefully before making a decision. Also, please
refer to the attached Q&A document which has been provided by the plan sponsor.


Sincerely,


Merrill Lynch Group Employee Services






                                      -3-
<PAGE>   49
                              QUESTIONS AND ANSWERS
                         (provided by the plan sponsor)

           TENDERING SHARES IN THE DUPONT SAVINGS AND INVESTMENT PLAN


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont stock unless you wish
         to do so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL NUMBERS TO GIVE TENDER INSTRUCTIONS. You
         cannot participate in the exchange offer through the regular phone
         line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.

                                      -4-
<PAGE>   50
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE ELECTION PERIOD, I HAVE FEWER
         SHARES OF DUPONT STOCK IN MY ACCOUNT THAN I HAVE INSTRUCTED MERRILL
         LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you only have 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY ACCOUNT?

A.6      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.7      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.7      While the election period is open, you may change or revoke a
         previously provided tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone number again.

         YOU MUST CALL THE SPECIAL PHONE NUMBER TO MAKE CHANGES. You cannot make
         changes by calling the regular phone line.

Q.8      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.8      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your account.

Q.9      WILL THERE BE ANY EFFECT ON THE OPERATION OF MY ACCOUNT EITHER DURING
         OR AFTER THE ELECTION PERIOD?

A.9                                 During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                                    After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.

                                      -5-
<PAGE>   51
         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares are actually deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.10     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.10     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers can
         still be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular phone number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

Q.11     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY PLAN ACCOUNT, WILL I
         RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.11     Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.12     WILL CONOCO CLASS B STOCK BE TREATED LIKE DUPONT STOCK WITHIN MY
         ACCOUNT?

A.12     While you are free to sell the Conoco stock at any time, you may not
         purchase additional shares of Conoco stock within your plan account.
         Any shares of Conoco stock that you elect to sell will be subject to
         the same sales rules and fees that apply to DuPont stock.

         In addition, dividends paid on Conoco stock will NOT be reinvested to
         purchase additional Conoco shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment direction.

Q.13     IS THE TAX TREATMENT OF SHARES OF CONOCO CLASS B STOCK DISTRIBUTED FROM
         MY ACCOUNT IN KIND THE SAME AS THAT OF DUPONT STOCK?

A.13     You will be permitted to receive your Conoco stock in kind (that is, as
         shares). However, Conoco stock will not be subject to the net
         unrealized appreciation (NUA) treatment that is available for DuPont
         stock.

                                      -6-
<PAGE>   52
Q.14     HOW LONG MAY I HOLD CONOCO STOCK IN MY PLAN ACCOUNT?

A.14     There is currently no plan to limit the time you may hold Conoco Class
         B stock except for the general plan or regulatory limits that apply to
         all plan assets. The plan sponsor periodically reviews the plan's
         investment options and may change the options offered under the plan
         from time to time.

Q.15     MAY I PURCHASE MORE SHARES OF CONOCO STOCK AFTER THE EXCHANGE?

A.15     No, you may acquire Conoco stock in the plan only through the exchange.

Q.16     HOW WILL CONOCO STOCK BE TREATED WHEN I SELL IT TO BUY ANOTHER FUND?

A.16     The sale price of Conoco stock will be the weighted average price of
         all Conoco stock sold by plan participants on a given day (the same
         method that is used for determining the sale price of DuPont stock in
         the plan). The sales commission for Conoco stock will be the same as
         that for DuPont stock, $.07 per share.

                                      -7-
<PAGE>   53
                               MAKING A DECISION

The diagram on this page outlines what the participants should do if they choose
to participate or decline to participate in the exchange offer.


                                      -8-
<PAGE>   54
                                            Group Employee Services

                                            Private Client Group

                                            P.O. Box 30441
                                            New Brunswick, New Jersey 08989-0441

[MERRILL LYNCH LOGO]



July 12, 1999


To Participants in the Conoco Thrift Plan:

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock held in your Thrift Plan
account. Note: If you own shares of DuPont stock other than in your Thrift Plan
account, you should receive separate mailings relating to those shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD DUPONT STOCK IN THE THRIFT PLAN, YOU DO NOT NEED TO TAKE ANY
ACTION WITH REGARD TO THIS MAILING.

                         HOW MANY SHARES YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 2 P.M. CDT, THURSDAY, AUGUST 5, 1999

Both the election period for the Thrift Plan and the ability to change or cancel
your election will expire at the time and date shown above, unless the exchange
offer is extended. Note: For accounting purposes, the Thrift Plan election
period closes one day earlier than the election period for the general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.

                                       1
<PAGE>   55
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period for the Thrift Plan expires, your holdings of
DuPont stock in the Thrift Plan may have changed (for example, through fund
transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                        NUMBER OF SHARES MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
shares of DuPont stock that will be accepted under the exchange offer is
limited. If more shares than the maximum amount are tendered, the number of
shares to be accepted from each tendering stockholder will be reduced among
tendering stockholders according to procedures in the Offering
Circular-Prospectus. Proportionate acceptance of shares of DuPont stock from
stockholders is called proration.

         TENDERING WILL AFFECT SOME THRIFT PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited in doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares actually are deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular
Thrift Plan phone number. It is anticipated that at least seven business days
after the expiration of the offer will be required for the shares to be
deposited.

             IF YOU DO NOT WANT TO TENDER ANY OF YOUR DUPONT SHARES

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK IN THE THRIFT PLAN WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections for the Thrift Plan will be taken only over these special lines. If
you call the Thrift Plan line, you will be asked to call back on the special
tender phone lines.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal
Thrift Plan account; only Merrill Lynch can do that.

                                       2
<PAGE>   56
<TABLE>
<CAPTION>
                                  WHERE TO CALL
- -------------------------------------------------------------------------------------------------------------
                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
- -------------------------------------------------------------------------------------------------------------
<S>                           <C>                         <C>                      <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            6 a.m. - 7 p.m. CDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR THRIFT PLAN ACCOUNT                                      732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)              Thursday at
                                                                                          2 p.m. CDT
- -------------------------------------------------------------------------------------------------------------
IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            7 a.m. - 8 p.m. CDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 7 a.m. - 4 p.m. CDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
- -------------------------------------------------------------------------------------------------------------
</TABLE>

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the Thrift Plan and that you may participate. Please
read the Offering Circular-Prospectus carefully before making a decision. Also,
please refer to the attached Q&A document that Conoco has provided.

Sincerely,


Merrill Lynch Group Employee Services

                                       3
<PAGE>   57
                              QUESTIONS AND ANSWERS
                     (PROVIDED BY THE SPONSOR OF THE PLANS)

                             TENDERING SHARES IN THE
              CONOCO THRIFT PLAN AND THE CONOCO RETAIL THRIFT PLAN


 Note: References to "Thrift Plan" in this Q&A mean both the Conoco Thrift Plan
                       and the Conoco Retail Thrift Plan.


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your DuPont shares unless you wish to do
         so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL PHONE NUMBERS TO GIVE TENDER INSTRUCTIONS.
         You cannot participate in the exchange offer through the regular Thrift
         Plan phone line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.

                                       4
<PAGE>   58
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE TENDER WINDOW, I HAVE FEWER SHARES
         OF DUPONT STOCK IN MY THRIFT PLAN ACCOUNT THAN I HAVE INSTRUCTED
         MERRILL LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you have only 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      MAY I PURCHASE SHARES OF DUPONT STOCK DURING THE ELECTION PERIOD, THEN
         TENDER THOSE SHARES?

A.6      Yes, but you must allow ample time for your transaction to settle
         before you may tender those shares. YOU MUST PUT IN YOUR ORDER TO
         PURCHASE BEFORE 2 P.M. CENTRAL TIME AT LEAST TWO DAYS PRIOR TO THE
         CLOSE OF THE THRIFT PLAN ELECTION period. For example, with the Thrift
         Plan election period closing on a Thursday, your purchase order must be
         placed before 2 p.m. Central time on the prior Tuesday. You then will
         be able to tender the newly acquired shares on Thursday.

Q.7      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY THRIFT PLAN
         ACCOUNT?

A.7      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.8      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.8      While the election period is open, you may change a previously provided
         tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone numbers again.

         YOU MUST CALL THE SPECIAL PHONE NUMBERS TO MAKE CHANGES. You cannot
         make changes by calling the regular Thrift Plan phone line.

Q.9      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.9      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your Thrift Plan account.

                                       5
<PAGE>   59
Q.10     WILL THERE BE ANY EFFECT ON THE OPERATION OF MY THRIFT PLAN ACCOUNT
         EITHER DURING OR AFTER THE ELECTION PERIOD?

A.10                                During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                                    After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.

         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares actually are deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.11     IF I TENDER MY SHARES OF DUPONT STOCK, WHICH SPECIFIC TRANSACTIONS WILL
         BE AFFECTED DURING THE RESTRICTED PERIOD MENTIONED ABOVE?

A.11     The restrictions on your account during this period will involve any
         transactions in which the value of your DuPont stock assets plays a
         role. Some transactions will not be permitted at all; others may be
         limited in amount. (Transactions that do not involve the value of
         DuPont stock will be permitted.)

         Restricted transactions involve: fund transfers, loans, loans that are
         "deemed" (reclassified as withdrawals), full withdrawals, hardship
         withdrawals and periodic payments.

         To determine how your personal account may be restricted if you are
         contemplating any of these transactions, call Merrill Lynch at
         1-877-266-6264 or 1-877-Conoco4. Retail employees should call
         1-877-725-4913. If outside the U.S., call ETN 235-1000 or
         732-563-8720.

Q.12     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.12     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers
         still can be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular Thrift Plan phone
         number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

                                       6
<PAGE>   60
Q.13     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY THRIFT PLAN ACCOUNT, WILL
         I RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.13     Yes. After the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.14     AFTER THE EXCHANGE OFFER EXPIRES, WILL I STILL BE ABLE TO BUY SHARES OF
         DUPONT STOCK THROUGH THE THRIFT PLAN?

A.14     No. The only stock that will be available for new purchases will be
         Conoco Class B stock.

         In addition, dividends paid on DuPont stock will NOT be reinvested to
         purchase additional DuPont shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment directions. (Dividends paid on Conoco Class A stock and
         Conoco Class B stock also will be invested according to your investment
         directions.)

         If your monthly investment directions call for the purchase of DuPont
         stock, you will need to change them when the exchange offer expires.
         Any such directions that you do not change will be redirected to
         purchase the Stable Value Fund.

Q.15     IF I DO NOT TENDER MY SHARES OF DUPONT STOCK, HOW LONG MAY I HOLD THEM
         IN MY THRIFT PLAN ACCOUNT?

A.15     You may hold your DuPont stock for at least five years from the date on
         which DuPont's voting rights in Conoco drop below 80%. During that
         time, you may sell all or part of those holdings.

Q.16     SUPPOSE I DECIDE NOT TO TENDER MY SHARES OF DUPONT STOCK DURING THIS
         EXCHANGE OFFER. HOW WILL THEY BE TREATED IF I SELL THEM LATER TO BUY
         ANOTHER FUND?

A.16     Such sales will be treated the same as those for Conoco Class A stock
         and Conoco Class B stock, including the same sales commission
         (currently $.07 per share).

                                       7
<PAGE>   61
                                MAKING A DECISION


The diagram on this page outlines what the participants should do if they choose
to participate or decline to participate in the exchange offer.

                                       8
<PAGE>   62
[MERRILL LYNCH LETTERHEAD]



July 12, 1999


To Participants in the Conoco Retail Thrift Plan:

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock held in your Retail Thrift
Plan account. Note: If you own shares of DuPont stock other than in your Retail
Thrift Plan account, you should receive separate mailings relating to those
shares.

The number of Conoco shares you can receive for each share of DuPont stock is
shown on the front cover of the enclosed Offering Circular-Prospectus, which
sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD DUPONT STOCK IN THE RETAIL THRIFT PLAN, YOU DO NOT NEED TO
TAKE ANY ACTION WITH REGARD TO THIS MAILING.

                         HOW MANY SHARES YOU MAY TENDER

You may submit ("tender") for exchange all or only part of your holdings of
DuPont stock. If you tender only a part of your holdings of DuPont stock, you
have made an election not to tender your remaining holdings of DuPont stock.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount. The shares to be tendered will be prorated
across your Regular Account and your Before-Tax Account.

You may increase, decrease or cancel your election at any time during the
election period. To do so, you must revoke your prior election and then make a
new one.

       THE ELECTION PERIOD EXPIRES AT 2 P.M. CDT, THURSDAY, AUGUST 5, 1999

Both the election period for the Retail Thrift Plan and the ability to change or
cancel your election will expire at the time and date shown above, unless the
exchange offer is extended. Note: For accounting purposes, the Retail Thrift
Plan election period closes one day earlier than the election period for the
general public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.

                                       1
<PAGE>   63
             IF YOUR HOLDINGS DECREASE OR INCREASE AFTER YOU TENDER

At the time the election period for the Retail Thrift Plan expires, your
holdings of DuPont stock in the Retail Thrift Plan may have changed (for
example, through fund transfers or monthly contributions).

If the number of shares you hold at the end of the election period is smaller
than the number you tendered, that smaller number of shares will be submitted
for exchange. On the other hand, if the number of shares you hold is larger than
the number you tendered, only the number of shares you tendered will be
submitted for exchange.

                        NUMBER OF SHARES MAY BE PRORATED

As the Offering Circular-Prospectus explains more fully, the maximum number of
shares of DuPont stock that will be accepted under the exchange offer is
limited. If more shares than the maximum amount are tendered, the number of
shares to be accepted from each tendering stockholder will be reduced among
tendering stockholders according to procedures in the Offering
Circular-Prospectus. Proportionate acceptance of shares of DuPont stock from
stockholders is called proration.

     TENDERING WILL AFFECT SOME RETAIL THRIFT PLAN TRANSACTIONS TEMPORARILY

If you tender shares of DuPont stock, you may be limited in doing certain new
financial transactions (for example, loans, fund transfers and withdrawals) from
the close of the election period until the Conoco shares actually are deposited
in your account. Most transactions that do not involve tendered shares of DuPont
stock will not be affected. For details, call Merrill Lynch at the regular
Retail Thrift Plan phone number. It is anticipated that at least seven business
days after the expiration of the offer will be required for the shares to be
deposited.

             IF YOU DO NOT WANT TO TENDER ANY OF YOUR DUPONT SHARES

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock. IF YOU DO NOT CALL TO ELECT TO TENDER YOUR SHARES, YOU WILL BE
CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR HOLDINGS OF DUPONT STOCK
AND YOUR DUPONT STOCK IN THE RETAIL THRIFT PLAN WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections for the Retail Thrift Plan will be taken only over these special
lines. If you call the Retail Thrift Plan line, you will be asked to call back
on the special tender phone lines.

         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F. King
& Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your personal
Retail Thrift Plan account; only Merrill Lynch can do that.

                                       2
<PAGE>   64
                                  WHERE TO CALL
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------
                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
- -------------------------------------------------------------------------------------------------------------
<S>                           <C>                         <C>                      <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            6 a.m. - 7 p.m. CDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR RETAIL THRIFT PLAN                                       732-563-8775          of the election period
ACCOUNT                                                       international         when the lines close on
                                                              (call collect)              Thursday at
                                                                                          2 p.m. CDT
- -------------------------------------------------------------------------------------------------------------
IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            7 a.m. - 8 p.m. CDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 7 a.m. - 4 p.m. CDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
- -------------------------------------------------------------------------------------------------------------
</TABLE>

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the Retail Thrift Plan and that you may participate.
Please read the Offering Circular-Prospectus carefully before making a decision.
Also, please refer to the attached Q&A document that Conoco has provided.

Sincerely,


Merrill Lynch Group Employee Services

                                       3
<PAGE>   65
                              QUESTIONS AND ANSWERS
                     (PROVIDED BY THE SPONSOR OF THE PLANS)

                             TENDERING SHARES IN THE
              CONOCO THRIFT PLAN AND THE CONOCO RETAIL THRIFT PLAN


 Note: References to "Thrift Plan" in this Q&A mean both the Conoco Thrift Plan
                       and the Conoco Retail Thrift Plan.


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your DuPont shares unless you wish to do
         so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL PHONE NUMBERS TO GIVE TENDER INSTRUCTIONS.
         You cannot participate in the exchange offer through the regular Thrift
         Plan phone line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.

                                       4
<PAGE>   66
Q.5      WHAT HAPPENS IF, AT THE CLOSE OF THE TENDER WINDOW, I HAVE FEWER SHARES
         OF DUPONT STOCK IN MY THRIFT PLAN ACCOUNT THAN I HAVE INSTRUCTED
         MERRILL LYNCH TO TENDER?

A.5      Merrill Lynch will tender only available shares at the close of the
         election period, up to the maximum number that you specified should be
         tendered. For example, if you instructed Merrill Lynch to tender 100
         shares and you have only 80 because you sold 20 during the election
         period to purchase another investment option, Merrill Lynch would
         tender only 80 shares on your behalf.

Q.6      MAY I PURCHASE SHARES OF DUPONT STOCK DURING THE ELECTION PERIOD, THEN
         TENDER THOSE SHARES?

A.6      Yes, but you must allow ample time for your transaction to settle
         before you may tender those shares. YOU MUST PUT IN YOUR ORDER TO
         PURCHASE BEFORE 2 P.M. CENTRAL TIME AT LEAST TWO DAYS PRIOR TO THE
         CLOSE OF THE THRIFT PLAN ELECTION period. For example, with the Thrift
         Plan election period closing on a Thursday, your purchase order must be
         placed before 2 p.m. Central time on the prior Tuesday. You then will
         be able to tender the newly acquired shares on Thursday.

Q.7      HOW WILL SHARES OF DUPONT STOCK BE TENDERED FROM MY THRIFT PLAN
         ACCOUNT?

A.7      Shares will be tendered from both your Regular Account and your
         Before-Tax Account (if you have both). Your tender will be prorated
         across your accounts. For example, suppose you own a total of 100
         shares of DuPont stock, with 70 in your Regular Account and 30 in your
         Before-Tax Account. If you elect to tender 10 shares, Merrill Lynch
         will tender 7 shares on your behalf from your Regular Account and 3
         shares from your Before-Tax Account.

Q.8      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.8      While the election period is open, you may change a previously provided
         tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone numbers again.

         YOU MUST CALL THE SPECIAL PHONE NUMBERS TO MAKE CHANGES. You cannot
         make changes by calling the regular Thrift Plan phone line.

Q.9      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.9      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis. For example, assume that you have 100
         shares in your account and you tender all 100. Now suppose the offer is
         oversubscribed by 15%. In that case, 85 shares of DuPont stock will be
         accepted for exchange, leaving you with 15 shares of DuPont stock in
         your Thrift Plan account.

                                       5
<PAGE>   67
Q.10     WILL THERE BE ANY EFFECT ON THE OPERATION OF MY THRIFT PLAN ACCOUNT
         EITHER DURING OR AFTER THE ELECTION PERIOD?

A.10                                During the election period
         No matter whether you tender stock or do not tender stock, there will
         not be any effect on the operation of your account during the election
         period.

                                    After the election period
         - If you do not tender any DuPont shares, there will not be any effect
         on the operation of your account after the election period.

         - However, if you tender stock, restrictions may be placed on your
         account. When the election period ends, the restrictions begin. During
         this restricted period, tender instructions will be processed, results
         tabulated, accounts reconciled and stock transferred.

         The restricted period will last from the expiration of the election
         period until the Conoco shares actually are deposited in your account.
         We expect the restricted period to last about seven business days,
         although it may be extended if necessary.

Q.11     IF I TENDER MY SHARES OF DUPONT STOCK, WHICH SPECIFIC TRANSACTIONS WILL
         BE AFFECTED DURING THE RESTRICTED PERIOD MENTIONED ABOVE?

A.11     The restrictions on your account during this period will involve any
         transactions in which the value of your DuPont stock assets plays a
         role. Some transactions will not be permitted at all; others may be
         limited in amount. (Transactions that do not involve the value of
         DuPont stock will be permitted.)

         Restricted transactions involve: fund transfers, loans, loans that are
         "deemed" (reclassified as withdrawals), full withdrawals, hardship
         withdrawals and periodic payments.

         To determine how your personal account may be restricted if you are
         contemplating any of these transactions, call Merrill Lynch at
         1-877-266-6264 or 1-877-Conoco4. Retail employees should call
         1-877-725-4913. If outside the U.S., call ETN 235-1000 or
         732-563-8720.

Q.12     WILL THE VOICE RESPONSE SYSTEM (VRS) AT MERRILL LYNCH BE OPEN DURING
         THE RESTRICTED PERIOD?

A.12     It will be closed for fund transfers but open for other transactions
         such as changing the percentages for your monthly investment
         directions. An example of a fund transfer is selling the Fidelity
         Magellan Fund to buy the Merrill Lynch Basic Value Fund. Transfers
         still can be done during the restricted period by calling Merrill Lynch
         participant service representatives on the regular Thrift Plan phone
         number.

         The reason behind closing the VRS for fund transfers is that the system
         cannot be modified to tell you that certain transactions are not
         permitted for specific time periods. The participant service
         representatives can tell you those restrictions.

         The VRS will be reactivated for fund transfers after the restricted
         period ends.

                                       6
<PAGE>   68
Q.13     IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY THRIFT PLAN ACCOUNT, WILL
         I RECEIVE ANYTHING CONFIRMING THE EXCHANGE?

A.13     Yes. After the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.14     AFTER THE EXCHANGE OFFER EXPIRES, WILL I STILL BE ABLE TO BUY SHARES OF
         DUPONT STOCK THROUGH THE THRIFT PLAN?

A.14     No. The only stock that will be available for new purchases will be
         Conoco Class B stock.

         In addition, dividends paid on DuPont stock will NOT be reinvested to
         purchase additional DuPont shares for your account. Instead, these
         dividends will be allocated to your account using your current
         investment directions. (Dividends paid on Conoco Class A stock and
         Conoco Class B stock also will be invested according to your investment
         directions.)

         If your monthly investment directions call for the purchase of DuPont
         stock, you will need to change them when the exchange offer expires.
         Any such directions that you do not change will be redirected to
         purchase the Stable Value Fund.

Q.15     IF I DO NOT TENDER MY SHARES OF DUPONT STOCK, HOW LONG MAY I HOLD THEM
         IN MY THRIFT PLAN ACCOUNT?

A.15     You may hold your DuPont stock for at least five years from the date on
         which DuPont's voting rights in Conoco drop below 80%. During that
         time, you may sell all or part of those holdings.

Q.16     SUPPOSE I DECIDE NOT TO TENDER MY SHARES OF DUPONT STOCK DURING THIS
         EXCHANGE OFFER. HOW WILL THEY BE TREATED IF I SELL THEM LATER TO BUY
         ANOTHER FUND?

A.16     Such sales will be treated the same as those for Conoco Class A stock
         and Conoco Class B stock, including the same sales commission
         (currently $.07 per share).

                                       7
<PAGE>   69
                                MAKING A DECISION


The diagram on this page outlines what the participants should do if they choose
to participate or decline to participate in the exchange offer.


                                       8

<PAGE>   1
                                                                 Exhibit (a)(10)

                                            Group Employee Services

                                            Private Client Group

                                            P.O. Box 30441
                                            New Brunswick, New Jersey 08989-0441

[MERRILL LYNCH LOGO]

July 12, 1999


To Holders of DuPont Stock in Blueprint Accounts:

The DuPont Company is offering its stockholders the opportunity to exchange
their holdings of DuPont common stock for Conoco Class B common stock. The
shares will be exchanged without any brokerage fees or commissions.

IF YOU ARE A NON-U.S. PERSON, YOU MAY NOT PARTICIPATE IN THIS EXCHANGE OFFER;
THIS EXCHANGE OFFER IS OPEN ONLY TO U.S. PERSONS. FOR THE PURPOSES OF THIS
OFFER, A U.S. PERSON IS ANY INDIVIDUAL WHO IS A U.S. CITIZEN OR U.S. RESIDENT
(FOR U.S. FEDERAL INCOME TAX PURPOSES).

IF YOU ARE A NON-U.S. PERSON, YOU MAY PARTICIPATE IN AN OFFER FOR CASH GOVERNED
BY THE OFFER TO PURCHASE FOR CASH DOCUMENT. CONTACT MERRILL LYNCH FOR FURTHER
INSTRUCTIONS ON HOW TO PARTICIPATE IN THE OFFER FOR CASH.

We are sending you this letter to give you information about how to participate
in the exchange offer with shares of DuPont stock that you may hold in your
Blueprint account. Note: If you own shares of DuPont stock other than in your
Blueprint account, you will receive separate mailings relating to those shares.

The number of Conoco shares of stock you can receive for each share of DuPont
stock is shown on the front cover of the enclosed Offering Circular-Prospectus,
which sets forth the terms of DuPont's offer. We urge you to read the Offering
Circular-Prospectus carefully.

IF YOU DO NOT HOLD SHARES OF DUPONT STOCK IN YOUR BLUEPRINT ACCOUNT, YOU DO NOT
NEED TO TAKE ANY ACTION WITH REGARD TO THIS MAILING.

       THE ELECTION PERIOD EXPIRES AT 3 P.M. EDT, THURSDAY, AUGUST 5, 1999

Both the election period for your Blueprint account and the ability to change or
cancel your election will expire at the time and date shown above, unless the
exchange offer is extended. Note: For accounting purposes, the Blueprint
election period closes one day earlier than the election period for the general
public.

Additionally, the exchange offer is subject to the conditions discussed in the
Offering Circular-Prospectus under "The Exchange Offer - Conditions for
Completion of the Exchange Offer" and the satisfaction of all legal
requirements.

                                       -1-
<PAGE>   2
                NUMBER OF SHARES OF DUPONT STOCK MAY BE PRORATED

The maximum number of shares of DuPont stock that will be accepted under the
exchange offer is stated on the front cover of the Offering Circular-Prospectus.
If more shares than the maximum amount are tendered, the number of shares to be
accepted from tendering stockholders will be reduced proportionately, as
described in the Offering Circular-Prospectus. Proportionate acceptance of
DuPont shares from stockholders is called proration.

IF YOU HOLD FEWER THAN 100 SHARES OF DUPONT STOCK IN YOUR BLUEPRINT ACCOUNT AND
TENDER ALL OF THEM, YOU MAY REQUEST PREFERENTIAL TREATMENT TO HAVE YOUR TENDER
EXEMPTED FROM PRORATION.

                         HOW MANY SHARES YOU MAY TENDER

You may tender all or only part of your holdings of DuPont stock by giving
directions to Merrill Lynch, and you may increase, decrease or cancel your
election at any time during the election period. To increase or decrease the
number of shares that you want to tender, you must revoke your election and then
make a new election. If you tender only a part of your holdings of DuPont stock,
you have made an election not to tender your remaining holdings of DuPont stock.

DuPont shareholders who own less than 100 shares may voluntarily exempt
themselves from proration. Therefore, tender elections will fall into one of the
following three categories:

                  Option A - You hold less than 100 shares and elect proration.

                  Option B - You hold less than 100 shares and elect NOT to have
                  proration.

                  Option C - You hold 100 shares or more and will be subject to
                  proration, if applicable.

The shares you tender must be stated as a specific number of shares (whole and
fractional). In other words, you may not express your tender as a percentage of
your holdings or as a dollar amount.

         IF YOU DO NOT WANT TO TENDER ANY OF YOUR SHARES OF DUPONT STOCK

You do not need to do anything if you do not want to tender any of your shares
of DuPont stock in your Blueprint account. IF YOU DO NOT CALL TO ELECT TO TENDER
YOUR SHARES, YOU WILL BE CONSIDERED TO HAVE MADE AN ELECTION NOT TO TENDER YOUR
HOLDINGS OF DUPONT STOCK AND YOUR DUPONT STOCK WILL NOT BE TENDERED.

                 GIVE YOUR TENDER INSTRUCTIONS TO MERRILL LYNCH

An election to tender must be made by telephone. Special phone lines have been
set up at Merrill Lynch for you to provide your tender instructions. Tender
elections will be taken only over these special lines. If you call the regular
SHARES line, you will be asked to call back on the special tender phone line.

                                      -2-
<PAGE>   3
         ANOTHER COMPANY WILL ANSWER QUESTIONS ABOUT THE EXCHANGE OFFER

In keeping with securities industry practice, an "information agent," D. F.
King & Co., Inc., has been hired by DuPont to answer general questions about the
exchange offer. Note: The agent cannot answer questions about your Blueprint
account; only Merrill Lynch can do that.

                                  WHERE TO CALL

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------

                                       CALL               SPECIAL PHONE NUMBERS          WHEN TO CALL
- -------------------------------------------------------------------------------------------------------------
<S>                           <C>                         <C>                      <C>
TO PROVIDE INSTRUCTIONS TO         Merrill Lynch             1-877-809-8005             Monday - Friday
EXCHANGE YOUR SHARES OF                                        in the U.S.            7 a.m. - 8 p.m. EDT
DUPONT STOCK (OR LATER                                         (toll-free)
CHANGE YOUR ELECTION) IN                                           or               . . . except at the end
YOUR ACCOUNT                                                  732-563-8775          of the election period
                                                              international         when the lines close on
                                                              (call collect)               Thursday
                                                                                         at 3 p.m. EDT
- -------------------------------------------------------------------------------------------------------------
IF YOU HAVE GENERAL           D. F. King & Co., Inc.         1-800-755-3105             Monday - Friday
QUESTIONS ABOUT THE           (the information agent)          in the U.S.            8 a.m. - 9 p.m. EDT
EXCHANGE OFFER                                                 (toll-free)                 Saturday
                                                                   or                 8 a.m. - 5 p.m. EDT
                                                              212-269-5550
                                                              international
                                                              (call collect)
- -------------------------------------------------------------------------------------------------------------
</TABLE>

                        DO NOT WAIT UNTIL THE LAST MINUTE

If you wait until near the end of the election period to call, the phone system
may be experiencing heavy call volume and you may not be able to reach a
representative before the election period expires.

                               THE CHOICE IS YOURS

This letter is not designed to encourage you to tender or hold your shares of
DuPont stock. It is intended to inform you that there is a program for tendering
shares of DuPont stock in the Blueprint account and that you may participate.
Please read the Offering Circular-Prospectus carefully before making a decision.
Also, please refer to the attached Q&A document, which has been provided by
DuPont.


Sincerely,


Merrill Lynch Group Employee Services

                                      -3-
<PAGE>   4
                             QUESTIONS AND ANSWERS
                              (PROVIDED BY DUPONT)

                    TENDERING SHARES IN THE BLUEPRINT ACCOUNT


Q.1      WHAT IS THE EXCHANGE OFFER?

A.1      The exchange offer is the mechanism by which DuPont will dispose of its
         remaining ownership in Conoco Inc. DuPont will distribute shares of
         Conoco Class B common stock to those DuPont shareholders who want to
         exchange their DuPont stock for Conoco stock. This is a completely
         voluntary process on the part of DuPont shareholders. You are not
         required to exchange any of your shares of DuPont stock unless you wish
         to do so.

Q.2      HOW DO I DECIDE WHETHER TO TENDER?

A.2      To decide whether tendering is a good option for you, review all the
         information that you received in this packet, including the Offering
         Circular-Prospectus for the exchange offer, just as you would with any
         other investment. You also may want to consult with your tax and/or
         investment advisor before making a final decision.

Q.3      HOW DO I TENDER?

A.3      During the election period, Merrill Lynch has special telephone numbers
         that you may use to tender shares of DuPont stock.

         Call 1-877-809-8005 in the U.S. (toll-free) or 732-563-8775
         international (call collect) if you want to tender.

         YOU MUST CALL THE SPECIAL NUMBERS TO GIVE TENDER INSTRUCTIONS. You
         cannot participate in the exchange offer through the regular phone
         line.

Q.4      IF I PARTICIPATE IN THE EXCHANGE OFFER, HOW MANY SHARES MAY I TENDER?

A.4      You may tender all or any part of your shares of DuPont stock. If you
         tender, you must tender a specific number of shares (whole and
         fractional). Merrill Lynch cannot accept dollar amounts or percentages
         for these transactions.

         You cannot tender more shares of DuPont stock than you have in your
         account at the time you call.

         NOTE: If you do nothing, you have made an election not to tender your
         holdings of DuPont stock and your DuPont stock will not be tendered.

                                      -4-
<PAGE>   5
Q.5      CAN I CHANGE MY ELECTION BEFORE THE ELECTION PERIOD CLOSES?

A.5      While the election period is open, you may change or revoke a
         previously provided tender instruction.

         If the number of shares of DuPont stock in your account changes during
         the election period and you want to change your tender instructions,
         you must call the special Merrill Lynch tender phone number again.

         YOU MUST CALL THE SPECIAL PHONE NUMBER TO MAKE CHANGES. You cannot make
         changes by calling the regular phone line.

Q.6      WHAT IF THE EXCHANGE OFFER IS OVERSUBSCRIBED?

A.6      In the event that more shares of DuPont stock are tendered than the
         maximum that can be accepted, shares properly tendered will be accepted
         for exchange on a prorated basis unless you hold fewer than 100 shares
         of DuPont stock and have elected not to have proration. For example,
         assume that you have 200 shares in your account and you tender all 200.
         Now suppose the offer is oversubscribed by 15%. In that case, 170
         shares of DuPont stock will be accepted for exchange, leaving you with
         30 shares of DuPont stock in your account.

Q.7      IF I PARTICIPATE IN THE EXCHANGE OFFER IN MY ACCOUNT, WILL I RECEIVE
         ANYTHING CONFIRMING THE EXCHANGE?

A.7      Yes, after the exchange offer is completed and shares of Conoco Class B
         stock are in your account, Merrill Lynch will send you a confirmation
         of the exchange.

Q.8      ARE THERE ANY COSTS TO ME IF I SELL MY CONOCO CLASS B STOCK AFTER IT
         HAS BEEN DEPOSITED IN MY BLUEPRINT ACCOUNT?

A.8      Yes, the standard commissions will apply.

Q.9      WILL I BE ALLOWED TO TENDER DUPONT STOCK OPTIONS?

A.9      No, you may tender only actual shares of DuPont common stock. You
         cannot tender DuPont stock options. You may exercise vested stock
         options in order to receive DuPont stock, which may then be tendered
         for Conoco stock.

                                      -5-
<PAGE>   6
                               MAKING A DECISION

The diagram on this page outlines what the participants should do if they choose
to participate or decline to participate in the exchange offer.

                                      -6-

<PAGE>   1
                                                               Exhibit (a)(11)

This announcement is neither an offer to exchange nor a solicitation of an offer
to exchange the securities. The Exchange Offer is made only by the Offering
Circular-Prospectus dated July 12, 1999 and the related Letter of Transmittal
and is not being made to any E. I. du Pont de Nemours and Company stockholders
in any jurisdiction in which the making of the Exchange Offer or acceptance
thereof would not be in compliance with the securities, blue sky or other laws
of such jurisdiction. In those jurisdictions in the United States where the
securities, blue sky or other laws require the Exchange Offer to be made by a
licensed broker or dealer, the Exchange Offer shall be deemed to be made on
behalf of E. I. du Pont de Nemours and Company by Morgan Stanley & Co.
Incorporated.

Notice of Offer to Exchange
2.95 Shares of Class B Common Stock
of
Conoco Inc.
for each share of Common Stock, up to 147,980,872 shares,
of
E. I. du Pont de Nemours and Company

THE EXCHANGE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
MIDNIGHT, NEW YORK CITY TIME, ON AUGUST 6, 1999 UNLESS THE EXCHANGE OFFER IS
EXTENDED.

E. I. du Pont de Nemours and Company, a Delaware corporation ("DuPont") is
offering to exchange 2.95 shares of Class B Common Stock, par value $.01 per
share, of Conoco Inc., a Delaware corporation ("Conoco" and such shares "Conoco
Class B Common Stock") for each share of Common Stock, par value $.30 per share,
of DuPont ("DuPont Common Stock"), up to a maximum of 147,980,872 shares of
DuPont Common Stock, that is validly tendered and not properly withdrawn by
12:00 midnight, New York City time, on August 6 , 1999, or any later date to
which the Exchange Offer may be extended (such date and time, as it may be so
extended, the "Expiration Date"), upon the terms and subject to the conditions
set forth in the Offering Circular-Prospectus dated July 12, 1999 (the "Offering
Circular-Prospectus") and in the related Letter of Transmittal (which together
constitute the "Exchange Offer"). The Exchange Offer is being made only to
DuPont stockholders who are United States persons, as defined in the
Offering-Circular Prospectus. DuPont will be making a substantially concurrent
cash offer to purchase DuPont shares from DuPont stockholders who are not United
States persons.

DuPont is making the Exchange Offer as part of a transaction to separate
Conoco's oil and gas business from DuPont's materials and life sciences
businesses, as described in the Offering Circular-Prospectus. The Exchange Offer
also provides DuPont's stockholders who are United States persons with an
opportunity to adjust, in a tax-free manner, their investments between DuPont's
remaining materials and life sciences businesses and Conoco's oil and gas
business.

The Exchange Offer is conditioned upon, among other things, at least 73,990,436
shares of DuPont Common Stock (approximately 6.6% of the outstanding DuPont
Common Stock) being validly tendered and not withdrawn on or prior to the
Expiration Date.

DuPont currently holds 436,543,573 shares of Conoco Class B Common Stock, all of
which are being offered pursuant to the Exchange Offer. If all such shares are
not exchanged in the Exchange Offer and the Exchange Offer is consummated,
DuPont may choose from several alternatives including divesting some or all of
its remaining shares in a pro rata spin off to the DuPont stockholders remaining
after the Exchange Offer, disposing of some or all of such shares in a secondary
sale or other disposition, or retaining some or all of such shares for no longer
than five years. If more than 147,980,872 shares of DuPont Common Stock are
validly tendered and not withdrawn on or prior to the Expiration Date, DuPont
will accept such shares on a pro rata basis, except that a holder of DuPont
Common Stock who beneficially owns an aggregate of fewer than 100 shares of
DuPont Common Stock and who validly tenders all such shares, and does not
withdraw such shares, on or prior to the Expiration Date will not be subject to
proration if such holder so elects, as described in the Offering
Circular-Prospectus.
<PAGE>   2
NEITHER DUPONT, CONOCO NOR ANY OF THEIR OFFICERS OR DIRECTORS MAKES ANY
RECOMMENDATION TO ANY STOCKHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM
TENDERING SHARES OF DUPONT COMMON STOCK PURSUANT TO THE EXCHANGE OFFER. EACH
STOCKHOLDER MUST MAKE HIS OR HER OWN DECISION WHETHER TO TENDER SHARES OF DUPONT
COMMON STOCK PURSUANT TO THE EXCHANGE OFFER AND, IF SO, HOW MANY SHARES TO
TENDER.

For purposes of the Exchange Offer, DuPont shall be deemed, subject to the
proration provisions of the Exchange Offer, to have accepted for exchange and to
have exchanged shares of DuPont Common Stock validly tendered for exchange when
and if DuPont gives oral or written notice thereof to First Chicago Trust
Company of New York (the "Exchange Agent"). Exchange of shares of DuPont Common
Stock will be made by deposit of tendered shares of DuPont Common Stock with the
Exchange Agent, which will act as agent for the tendering stockholders for the
purpose of receiving shares of Conoco Class B Common Stock from DuPont and
transmitting such shares to tendering stockholders. In all cases, exchange of
shares of DuPont Common Stock will be made only after receipt by the Exchange
Agent by the Expiration Date of the Exchange Offer of (i) certificates for such
shares of DuPont Common Stock (or timely confirmation of a book-entry transfer
of such DuPont Common Stock into the Exchange Agent's account at The Depository
Trust Company) and (ii) a properly completed and duly executed Letter of
Transmittal (or manually signed facsimile thereof) or an agent's message (as
described in the Offering Circular-Prospectus) in connection with a book-entry
transfer of shares, together with any other documents required by the Letter of
Transmittal. Under no circumstances will interest be paid by Du Pont pursuant to
the Exchange Offer, regardless of any delay in making such exchange.

DuPont expressly reserves the right, at any time or from time to time, in its
sole discretion and regardless of whether any of the conditions specified in the
Offering Circular-Prospectus under the caption "The Exchange Offer-Conditions
for Completion of the Exchange Offer" have been satisfied, (i) to extend the
period of time during which the Exchange Offer is open by giving oral or
written notice of such extension to the Exchange Agent and by making a public
announcement of such extension or (ii) to amend the Exchange Offer in any
respect by giving oral or written notice of such amendment to the Exchange Agent
and by making a public announcement of such amendment.

Tenders of shares of DuPont Common Stock made pursuant to the Exchange Offer are
irrevocable provided that tenders of shares may be withdrawn as set forth in the
Offering Circular-Prospectus under the caption "The Exchange Offer-Withdrawal
Rights" and in the Letter of Transmittal. Tendered shares may be withdrawn at
any time prior to the Expiration Date and may also be withdrawn after the
expiration of 40 business days from the commencement of the Exchange Offer,
unless theretofore accepted for exchange by DuPont. To be effective, a written
or facsimile transmission notice of withdrawal must be received by the Exchange
Agent by the Expiration Date at one of its addresses set forth in the Letter of
Transmittal and must specify the name of the person who tendered the shares of
DuPont Common Stock to be withdrawn and the number of shares of DuPont Common
Stock to be withdrawn precisely as they appear in the Letter of Transmittal. All
questions as to the form of documents (including notices of withdrawal) and the
validity, form, eligibility (including time of receipt) and acceptance for
exchange of any tender of shares of DuPont Common Stock will be determined by
DuPont in its sole discretion, which determination will be final and binding on
all tendering stockholders. None of DuPont, Conoco, the Dealer Manger, the
Exchange Agent, the Information Agent or any other person will be under any
duty to give notification of any defect or irregularity in tenders or notices of
withdrawal or incur any liability for failure to give any such notification.

The information required to be disclosed by Rule 13e-4(d)(1) of the General
Rules and Regulations under the Securities Exchange Act of 1934, as amended, is
contained in the Offering Circular-Prospectus and is incorporated herein by
reference.

The Offering Circular-Prospectus, the Letter of Transmittal and other relevant
materials are being mailed to record holders of DuPont Common Stock (who are
United States persons as defined in the Offering Circular-Prospectus) and
furnished to brokers, dealers, banks, trust companies and similar persons whose
names, or the name of whose nominees, appear on the stockholder list of DuPont
or, if applicable, who are listed as participants in a clearing agency's
security position listing for subsequent transmittal to
<PAGE>   3
beneficial owners of DuPont Common Stock (who are United States persons as
defined in the Offering Circular-Prospectus). The Offering Circular-Prospectus,
the Letter of Transmittal and the related materials contain important
information which should be read carefully before any decision is made with
respect to the Exchange Offer.

     Questions and requests for assistance or for additional copies of the
Offering Circular-Prospectus, the Letter of Transmittal and other Exchange Offer
materials may be directed to the Information Agent or the Dealer Manager, at
their respective addresses and telephone numbers set forth below, and copies
will be furnished promptly at DuPont's expense.

The Information Agent for the Exchange Offer is:

D. F. King & Co., Inc.
77 Water Street
New York, New York 10005
(800) 755-3105 (toll free)
for calls in the United States
(212) 269-5550 (collect)
for calls outside the United States

The Dealer Manager for the Exchange Offer is:
Morgan Stanley Dean Witter
Morgan Stanley & Co. Incorporated
1585 Broadway
New York, New York 10036
(212) 761-6531
July 12, 1999

<PAGE>   1
                                                                Exhibit (a)(12)
E-Mail Message:

To: All DuPont Colleagues
From: Chad Holliday
Subject: Separating from Conoco - Final Steps

                                  July 9, 1999

Last May, we announced our plan to exit the oil and gas business operated  by
Conoco. At that time we pointed out how this move would permit DuPont and Conoco
to focus on the respective growth of each company, facilitate future
partnerships for each company, and allow each company to offer incentives to
employees that were more closely linked to performance. Proceeds from the
Conoco divestiture are being invested in DuPont through such key moves as
acquiring the remaining 50 percent of the Pharmaceutical joint venture, the
purchase of Herberts and the merger of Pioneer.

In September 1998, following a thorough review of all alternatives for
divesting its oil and gas business, DuPont's board of directors approved an
initial public offering of Conoco. In October 1998, Conoco completed its
initial public offering, and as a result DuPont currently owns approximately
70% of Conoco's total outstanding shares. DuPont is announcing its intention to
divest its remaining ownership interest in Conoco through an exchange offer
that will allow DuPont stockholders to exchange on a tax-free basis each DuPont
share for 2.95 shares of Conoco Class B common stock. The exchange offer will
be available only to DuPont stockholders who are United States persons, as
defined in the Offering Circular-Prospectus.

DuPont stockholders who are not United States persons will be eligible to
participate in an offer in which DuPont will purchase for cash shares of DuPont
common stock. DuPont is providing the cash offer because of regulatory,
administrative and tax considerations.

If the exchange offer or cash offer is oversubscribed, the DuPont shares
tendered will be generally exchanged or purchased on a pro rata basis, with
only a certain percentage of each person's shares being exchanged or purchased
by DuPont.

Employees who are DuPont stockholders will be able to participate in the
exchange or cash offers through the various U.S. and non U.S. employee
<PAGE>   2
plans which hold DuPont stock and through Merrill Lynch Blueprint Accounts. If
you are an employee who holds DuPont stock, you will receive information in the
next several days on how you can participate.

The divestiture of Conoco closes one chapter in our company's long history,
and allows us to turn the page to a new era of sustainable growth. With your
help, DuPont's third century will be the best one yet.

                                 Chad

Note: Chad's previous messages to employees are posted at
http://www.lvs.dupont.com/ea/chad/html/messages.html

<PAGE>   1
                                                                Exhibit (a)(13)
TO:         ALL EMPLOYEES

SUBJECT:    FINAL STEP TOWARD INDEPENDENCE BEGINS


Just over a year ago, the plan to separate Conoco from DuPont was announced.
Today, the final step in that process began. DuPont set the exchange ratio for a
stock exchange offer being provided to its U.S. shareholders. Through the offer
- -- which will commence on Monday -- DuPont plans to divest its remaining
ownership in Conoco.

The exchange offer provides DuPont's U.S. shareholders the opportunity to
exchange their DuPont common stock for Conoco Class B common stock. The exchange
ratio is the number of Conoco shares that will be received for each share of
DuPont stock tendered. (DuPont's news release is included at the bottom of this
e-mail.)

DuPont is providing its non-U.S. shareholders the opportunity to sell their
DuPont stock back to the company for a specified price. The cash offer will
begin on Wednesday.

Participating in the offers is a matter of personal choice and should be a fully
informed decision. Included in this e-mail is a summary of how information about
the offers is being provided, as well as some telephone numbers to call if you
have questions.

As we continue our journey to independence, I'm gratified by the extraordinary
progress we've made over the past year. Through our IPO last October, investors
purchased 30 percent of Conoco's stock for $4.4 billion. This spring, we closed
a landmark $4 billion jumbo bond offering, and followed that success with a
short-term commercial paper program that raised $1 billion. Through these
programs, Conoco has paid off the $5 billion debt owed to DuPont in connection
with the separation.

The exchange offer is the biggest step yet toward making Conoco a completely
independent company, prepared to set its own course in the global energy
industry.

Over the next few days, two teams of senior Conoco managers will begin a road
show in support of the exchange offer, meeting with major DuPont institutional
investors in the United States. Our goal is to provide these investors with a
greater understanding of Conoco. We'll discuss our businesses, key strategies,
major projects and growth potential. We'll also talk about our core values and
the integrity, talent and dedication of our employees -- factors that will
determine our long-term business success.




                                       1

<PAGE>   2
I want to thank each of you for your continuing commitment to achieve the
company's goals. It has been an exciting journey. I'm optimistic about the
future and our ability to significantly grow the company.

Archie

HOW INFORMATION ON THE OFFERS IS BEING PROVIDED

Below is a summary of how information about the stock exchange offer and the
cash offer is being provided to eligible DuPont shareholders.

The stock exchange offer is available to DuPont shareholders who are "U.S.
persons." A "U.S. person" is defined as a U.S. citizen or a resident of the U.S.
for federal income tax purposes. DuPont is including only "U.S. persons" in the
stock exchange offer for tax and administrative reasons.

The cash offer is being made to DuPont shareholders who are non-U.S. persons.

In general, DuPont shareholders will have 20 business days to indicate that they
wish to participate in the offers. Employees who hold DuPont stock through some
company plans, however, may have an earlier deadline (so certain administrative
functions can be carried out). Employees should pay close attention to the
deadlines included in the information they receive.

If the exchange offer or cash offer are oversubscribed, the DuPont shares
tendered will be exchanged or purchased on a pro rata basis, with only a certain
percentage of each person's shares being exchanged or purchased by DuPont.

The FOLLOWING INFORMATION IS PROVIDED FOR INFORMATION ONLY. YOU SHOULD NOT TAKE
ANY ACTION UNTIL YOU RECEIVE THE MAILINGS THAT ARE DESCRIBED BELOW.

TELEPHONE LINES: Special telephone lines have been established to answer
shareholders' questions about the offers. General questions should be directed
to D.F. King & Co., the information agent, Monday through Friday from 7 a.m. to
8 p.m. (all hours listed here are Houston time) and Saturday from 7 a.m. to 4
p.m. The toll-free number in the U.S. is 1-800-755-3105. Outside the U.S.,
shareholders should call collect 212-269-5550.

Offer letters that include procedures for exchanging stock held in company plans
and Merrill Lynch Blueprint Accounts will be mailed to eligible shareholders.
Questions regarding these procedures should be directed to the telephone numbers
provided in the offer letters.

                                       2
<PAGE>   3
INFORMATION FOR U.S. SHAREHOLDERS

THE OFFERING CIRCULAR-PROSPECTUS: The offering circular-prospectus is being
mailed to DuPont's U.S. shareholders. This document includes Q & A section
about the exchange offer, a detailed analysis of both DuPont and Conoco, a
discussion of the risks of investing in Conoco and information on the terms of
the exchange offer and how to participate. The offering circular-prospectus
will be posted on the Houston Intranet's "Road to Independence" site (Offer
Information) on Monday, July 12 (the day the exchange offer commences). The
site can be accessed by clicking this link
http://www.ho.dupont.com/ccn/road/index.stm.

U.S. THRIFT PLAN INFORMATION: Conoco employees who are members in the U.S.
Thrift Plan and the U.S. Retail Thrift Plan will receive a letter in their
offering circular-prospectus package providing information on how to
participate in the exchange offer.

MERRILL LYNCH BLUEPRINT ACCOUNT INFORMATION: Conoco employees who hold DuPont
stock in Merrill Lynch Blueprint Accounts will receive a letter in their
offering circular-prospectus package providing information on how to
participate in the exchange offer.

INFORMATION FOR NON-U.S. SHAREHOLDERS

CASH OFFER INFORMATION: Details on the cash offer will be provided in an "Offer
to Purchase" document that will be mailed to DuPont shareholders by the
appropriate administrator of individual company plans or brokerage firms
through which DuPont stock is held in private accounts. The "Offer to Purchase"
document will be posted on the Houston Intranet's "Road to Independence" site
(Offer Information) on Wednesday, July 14 (the day the cash offer commences).
The site can be accessed by clicking this link
http://www.ho.dupont.com/ccn/road/index.stm.

MERRILL LYNCH BLUEPRINT ACCOUNT INFORMATION: Conoco employees who are residents
of a non-U.S. location will receive the cash offer documents from Merrill Lynch
for the DuPont stock held in their Blueprint Accounts.

DUPONT NEWS RELEASE

DUPONT SETS RATIO FOR EXCHANGE OFFER FOR CONOCO INC. CLASS B COMMON STOCK

WILMINGTON, DEL., July 9 - DuPont (NYSE:DD) today set the exchange ratio for
the offer to its shareholders to exchange one share of DuPont common stock for
2.95 shares of the Conoco (NYSE:COC) Class B common stock currently held by
DuPont up to a maximum of 148 million shares of DuPont common stock. The
exchange ratio represents a premium of 18 percent based on the NYSE

                                       3
<PAGE>   4
closing prices on July 8 of $68-5/8 per share for DuPont and $27-3/8 per share
for Conoco.

DuPont expects the registration statement filed with the Securities and Exchange
Commission (SEC) under which the exchange offer will be made to become
effective today. It is expected that the exchange offer will commence on July
12 subject to the effectiveness of the registration statement.

The exchange offer is to be available only to DuPont shareholders who are
United States persons as defined in the Offering Circular-Prospectus. If the
exchange offer, which will be made by means of an Offering Circular-Prospectus,
commences on July 12, it will expire at 12:00 midnight, New York City time, on
August 6, 1999, unless extended.

DuPont has retained the services of D.F. King & Co., Inc. as Information Agent
to assist shareholders with the exchange offer. Questions regarding the terms
and conditions of the exchange offer or information on tendering shares should
be directed to D.F. King at 800-755-3105 (toll free) in the U.S. or
212-269-5550 (collect) outside the U.S.

Morgan Stanley Dean Witter will act as dealer-manager.

Conoco is a major, integrated energy company based in Houston and active in 40
countries.

Dupont is a science company, delivering science-based solutions that make a
difference in people's lives in food and nutrition; health care; apparel; home
and construction; electronics; and transportation. Founded in 1802, the company
operates in 65 countries and has 92,000 employees.

A registration statement relating to these securities has been filed with the
Securities and Exchange Commission. This communication shall not constitute an
offer to sell or the solicitation of an offer to buy nor shall there be any sale
of these securities in any state in which such offer, solicitation or sale would
be unlawful prior to registration or qualification under the securities laws of
any such state.

                                     # # #

7/9/99

THIS E-MAIL IS FOR INTERNAL USE ONLY AND IS NOT TO BE USED OR DISTRIBUTED
OUTSIDE CONOCO.

                                       4

<PAGE>   1
                                                                     Exhibit (d)




                                                     July 2, 1999


E. I. du Pont de Nemours and Company
1007 Market Street
Wilmington, Delaware  19898

                           Re:      United States Federal Income Tax
                                    Consequences of the Exchange Offer and
                                    Any Subsequent Spin-off

Ladies and Gentlemen:

                  We have acted as counsel to E. I. du Pont de Nemours and
Company, a Delaware corporation ("DuPont"), in connection with the contemplated
exchange offer (the "Exchange Offer") pursuant to which DuPont will exchange
shares of Class B common stock ("Class B Common Stock") of Conoco Inc., a
Delaware corporation ("Conoco"), for shares of DuPont common stock ("Common
Stock") tendered by DuPont stockholders and the subsequent spin-off, if any, of
Class B Common Stock to DuPont stockholders (the "Spin-off," together with the
Exchange Offer, the "Split-off"), as described in the Registration Statement on
Form S-4 filed with the United States Securities and Exchange Commission (the
"Commission") on March 22, 1999, as amended (the "Registration Statement"). You
have requested our opinion regarding the United States federal income tax
consequences of the Split-off.

                  In rendering our opinion, we have examined and relied upon the
accuracy and completeness of the facts, information, representations and
covenants contained in originals or copies, certified or otherwise identified to
our satisfaction, of the Registration Statement, and such other documents as we
have deemed necessary or appropriate as a basis for the opinion set forth below.
Our opinion is conditioned upon, among other things, the initial and continuing
accuracy and completeness of the facts, information, representations and
covenants set forth in the documents referred to above and the statements,
representations and covenants made by DuPont and Conoco.


<PAGE>   2
E. I. du Pont de Nemours and Company
July 2, 1999
Page 2




                  In our examination, we have assumed the genuineness of all
signatures, the legal capacity of natural persons, the authenticity of all
documents submitted to us as originals, the conformity to original documents of
all documents submitted to us as certified or photostatic copies, and the
authenticity of the originals of such documents. We have assumed that all of the
transactions related to the Split-off will be consummated in the manner
described in the Registration Statement and that all DuPont stockholders
participating in the Split-off will hold their Common Stock as a capital asset.

                  In rendering our opinion, we have considered applicable
provisions of the Internal Revenue Code of 1986, as amended (the "Code"),
Treasury regulations promulgated thereunder, pertinent judicial authorities,
interpretive rulings of the Internal Revenue Service, and such other authorities
as we have considered relevant, all of which are potentially subject to change,
possibly with retroactive effect. A change in any of the authorities upon which
our opinion is based could affect our conclusions.

                  Based solely on the foregoing, we are of the opinion that,
under current law, for United States federal income tax purposes:

         (i)      no gain or loss will be recognized by, and no amount will be
                  included in the income of, the DuPont stockholders upon their
                  receipt of shares of Class B Common Stock in the Exchange
                  Offer and any subsequent Spin-off;

         (ii)     for those DuPont stockholders that surrender all of their
                  Common Stock in the Exchange Offer, the aggregate tax basis of
                  the shares of Class B Common Stock held by the DuPont
                  stockholders after the Exchange Offer, including any
                  fractional share interests, will be the same as the aggregate
                  tax basis of the shares of Common Stock exchanged in the
                  Exchange Offer;

         (iii)    for those DuPont stockholders that do not surrender all of
                  their Common Stock in the Exchange Offer, each such
                  stockholder's aggregate tax basis in the Common Stock held
                  before the completion of the Exchange Offer will be allocated
                  between the Common Stock and Class B Common Stock, including
                  any fractional share interests,

<PAGE>   3

E. I. du Pont de Nemours and Company
July 2, 1999
Page 3


                  held by such stockholder after the Exchange Offer and any
                  subsequent Spin-off in proportion to their relative fair
                  market values; and

         (iv)     the holding period of the shares of Class B Common Stock
                  received by the DuPont stockholders in the Exchange Offer and
                  any subsequent Spin-off, including any fractional share
                  interests, will include the holding period of the shares of
                  Common Stock with respect to which the shares of Class B
                  Common Stock were received.

                  Except as set forth above, we express no opinion to any party
as to any tax consequences, whether federal, state, local or foreign, of the
Split-off or of any other transaction or event contemplated by or referred to in
the Registration Statement. This opinion is expressed as of the date hereof, and
we disclaim any undertaking to advise you of any subsequent change in the facts
stated, referenced, or assumed herein or of any subsequent change in applicable
law. This opinion may not be used, circulated, quoted, or otherwise referred to
for any purpose without our express written permission. We consent to the use of
our name in the offering circular-prospectus included in the Registration
Statement and to the filing of this opinion with the Commission as an exhibit to
the Registration Statement. In giving this consent, we do not thereby admit that
we are within the category of persons whose consent is required under Section 7
of the Securities Act of 1933, as amended, or the rules and regulations of the
Commission promulgated thereunder.

                                     Very truly yours,



                                     Skadden, Arps, Slate, Meagher & Flom LLP

<PAGE>   1
                                                                  Exhibit (g)(1)

                      E.I. du Pont de Nemours and Company

February 19, 1999


Report of Independent Accountants


To the Stockholders and the Board of Directors of
E.I. du Pont de Nemours and Company

In our opinion, the consolidated financial statements appearing on pages 41-67
of this Annual Report present fairly, in all material respects, the financial
position of E.I. du Pont de Nemours and Company and its subsidiaries at
December 31, 1998 and 1997, and the results of their operations and their cash
flows for each of the three years in the period ended December 31, 1998, in
conformity with generally accepted accounting principles. These financial
statements are the responsibility of the company's management; our
responsibility is to express an opinion on these financial statements based on
our audits. We conducted our audits of these statements in accordance with
generally accepted auditing standards which require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements,
assessing the accounting principles used and significant estimates made by
management, and evaluating the overall financial statement presentation. We
believe that our audits provide a reasonable basis for the opinion expressed
above.


/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
Thirty South Seventeenth Street
Philadelphia, Pennsylvania 19103

February 19, 1999

40                                   DuPont
<PAGE>   2
                             Financial Statements

       E.I. du Pont de Nemours and Company and Consolidated Subsidiaries


Consolidated Income Statement
(Dollars in millions, except per share)

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                                  1998        1997       1996
                                                --------------------------------
<S>                                             <C>         <C>        <C>
Sales                                           $ 24,767    $ 24,089   $ 23,644
Other Income (Note 3)                                981       1,005      1,101
  Total                                           25,748      25,094     24,745
                                                --------------------------------
Cost of Goods Sold and Other Operating Charges    15,664      15,564     15,314
Selling, General and Administrative Expenses       2,115       2,061      2,119
Depreciation and Amortization                      1,452       1,361      1,526
Research and Development Expense                   1,308       1,072        990
Interest Expense (Note 4)                            520         389        409
Purchased In-Process Research and Development
  (Note 5)                                         1,443       1,478         --
Employee Separation Costs and Write-down of
  Assets (Note 6)                                    633         340         --
                                                --------------------------------
  Total                                           23,135      22,265     20,358
                                                --------------------------------
Income from Continuing Operations Before
  Income Taxes and Minority Interests              2,613       2,829      4,387
Provision for Income Taxes (Note 7)                  941       1,354      1,416
Minority Interests in Earnings of
  Consolidated Subsidiaries                           24          43         40
                                                --------------------------------
Income from Continuing Operations                  1,648       1,432      2,931

Discontinued Operations (Note 2)
  Income from Operations of
    Discontinued Business, Net of
    Income Taxes                                     594         973        705
  Gain on Disposal of Discontinued
    Business, Net of Income Taxes                  2,439          --         --
                                                --------------------------------
Income Before Extraordinary Item                   4,681       2,405      3,636
Extraordinary Charge From Early
  Extinguishment of Debt, Net of Income
  Taxes (Note 8)                                    (201)         --         --

Net Income                                      $  4,480    $  2,405   $  3,636
================================================================================
Basic Earnings (Loss) Per Share of
  Common Stock (Note 9)
  Continuing Operations Before
    Extraordinary Item                          $   1.45    $   1.26   $   2.60
  Discontinued Operations                           2.69         .86        .63
                                                --------------------------------
  Before Extraordinary Item                         4.14        2.12       3.23
  Extraordinary Charge                              (.18)         --         --
                                                --------------------------------
  Net Income                                    $   3.96    $   2.12   $   3.23
Diluted Earnings (Loss) Per Share               ================================
   of Common Stock (Note 9)
   Continuing Operations Before
     Extraordinary Item                         $   1.43    $   1.24   $   2.56
   Discontinued Operations                          2.65         .84        .62
                                                --------------------------------
   Before Extraordinary Item                        4.08        2.08       3.18
   Extraordinary Charge                             (.18)         --         --
                                                --------------------------------
   Net Income                                   $   3.90    $   2.08   $   3.18
================================================================================
</TABLE>


                              See pages 45-67 for Notes to Financial Statements.



                                    DuPont                                    41
<PAGE>   3
                              Financial Statements

       E.I. du Pont de Nemours and Company and Consolidated Subsidiaries


Consolidated Balance Sheet
(Dollars in millions, except per share)

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                            1998          1997
- --------------------------------------------------------------------------------
<S>                                                 <C>           <C>
Assets
Current Assets
Cash and Cash Equivalents (Note 10)                 $  1,059      $  1,004
Marketable Securities (Note 10)                           10           142
Accounts and Notes Receivable (Note 11)                4,201         4,309
Inventories (Note 12)                                  3,129         2,792
Prepaid Expenses                                         192           169
Deferred Income Taxes (Note 7)                           645           691
                                                  ------------------------------
   Total Current Assets                                9,236         9,107
                                                  ------------------------------
Property, Plant and Equipment (Note 13)               34,728        32,911
Less: Accumulated Depreciation and Amortization       20,597        20,310
                                                  ------------------------------
   Net Property, Plant and Equipment                  14,131        12,601
                                                  ------------------------------
Investment in Affiliates (Note 14)                     1,796         2,372
Other Assets (Notes 7 and 15)                          4,956         4,211
Net Assets of Discontinued Operations (Note 2)         8,417         8,398
                                                  ------------------------------
Total                                               $ 38,536      $ 36,689
================================================================================
Liabilities and Stockholders' Equity
Current Liabilities
Accounts Payable (Note 16)                          $  1,929      $  1,921
Short-Term Borrowings and Capital Lease
   Obligations (Note 17)                               6,629         6,152
Income Taxes (Note 7)                                    130           120
Other Accrued Liabilities (Note 18)                    2,922         3,024
                                                  ------------------------------
   Total Current Liabilities                          11,610        11,217

Long-Term Borrowings and Capital Lease
   Obligations (Note 19)                               4,495         5,897
Other Liabilities (Note 20)                            7,640         7,444
Deferred Income Taxes (Note 7)                           430           500
                                                  ------------------------------
   Total Liabilities                                  24,175        25,058
                                                  ------------------------------
Minority Interests                                       407           361
                                                  ------------------------------
Stockholders' Equity (next page)
Preferred Stock, without par value -
   cumulative; 23,000,000 shares
   authorized; issued at December 31:
   $4.50 Series--1,672,594 shares
     (callable at $120)                                  167           167
   $3.50 Series--700,000 shares
     (callable at $102)                                   70            70
Common Stock, $.30 par value;
   1,800,000,000 shares authorized;
   Issued at December 31, 1998--1,140,354,154;
     1997--1,152,762,128                                 342           346
Additional Paid-In Capital                             7,854         7,991
Reinvested Earnings                                    6,705         4,389
Accumulated Other Comprehensive Loss                    (432)         (297)
Common Stock Held in Trust for Unearned
   Employee Compensation and Benefits
   (Flexitrust), at Market
   (Shares: December 31, 1998--14,167,867;
     1997--23,245,747)                                  (752)       (1,396)
                                                  ------------------------------
   Total Stockholders' Equity                         13,954        11,270
                                                  ------------------------------
Total                                               $ 38,536      $ 36,689
================================================================================
</TABLE>


                              See pages 45-67 for Notes to Financial Statements.



42                                  DuPont
<PAGE>   4
                              Financial Statements

       E.I. du Pont de Nemours and Company and Consolidated Subsidiaries


Consolidated Statement of Stockholders' Equity (Notes 21 and 22)
(Dollars in millions, except per share)

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------

                                                                    Accumulated
                                           Additional                  Other                                Total         Total
                         Preferred  Common   Paid-In   Reinvested  Comprehensive              Treasury  Stockholders'  Comprehensive
                           Stock     Stock   Capital    Earnings       Loss       Flexitrust    Stock       Equity        Income
                         -----------------------------------------------------------------------------------------------------------

<S>                      <C>        <C>    <C>        <C>          <C>            <C>         <C>      <C>             <C>
1996
Balance January 1, 1996     $ 237     $ 441  $ 8,689     $ 9,503     $ (113)       $ (1,645)  $(8,789)     $ 8,323
                         ----------------------------------------------------------------------------------------------
Net Income                                                 3,636                                                          $ 3,636
Cumulative Translation
   Adjustment                                                           (23)                                                  (23)
Minimum Pension
   Liability                                                             (3)                                                   (3)
                                                                                                                       -------------

Total Comprehensive
   Income                                                                                                                 $ 3,610
                                                                                                                       =============

Common Dividends
   ($1.115 per share)                                     (1,251)
Preferred Dividends                                          (10)
Treasury Stock
   Retirement                           (94)  (1,748)     (6,947)                               8,789
Warrant Repurchase                              (504)
Common Stock Issued
   Flexitrust                                   (289)                                   644
Compensation Plans                                70
Adjustments to Market
   Value                                         458                                   (458)
                         ----------------------------------------------------------------------------------------------
Balance December 31, 1996   $ 237     $ 347  $ 6,676     $ 4,931     $ (139)       $ (1,459)  $     -      $10,593
                         ----------------------------------------------------------------------------------------------
1997
Net Income                                                 2,405                                                          $ 2,405
Cumulative Translation
   Adjustment                                                          (130)                                                 (130)
Minimum Pension Liability                                               (28)                                                  (28)
                                                                                                                       -------------

Total Comprehensive
   Income                                                                                                                 $ 2,247
                                                                                                                       =============

Common Dividends
   ($1.23 per share)                                      (1,391)
Preferred Dividends                                          (10)
Treasury Stock
   Acquisition                                                                                 (1,747)
   Retirement                             (8)       (193) (1,546)                               1,747
Common Stock Issued
   Flexitrust                                       (299)                               419
   Businesses Acquired                     7       1,317
Compensation Plans                                   134
Adjustments to Market
   Value                                             356                               (356)
                         ----------------------------------------------------------------------------------------------
Balance December 31, 1997    $ 237     $ 346     $ 7,991 $ 4,389     $ (297)       $ (1,396)  $     -      $11,270
                         ----------------------------------------------------------------------------------------------
1998
Net Income                                                 4,480                                                          $ 4,480
Cumulative Translation
   Adjustment                                                           (23)                                                  (23)
Minimum Pension Liability                                              (112)                                                 (112)
                                                                                                                      -------------
Total Comprehensive
   Income                                                                                                                 $ 4,345
                                                                                                                      =============
Common Dividends ($1.365
   per share)                                             (1,539)
Preferred Dividends                                          (10)
Treasury Stock
   Acquisition                                                                                   (704)
   Issuance/Retirement                    (4)        (85)   (615)                                 704
Common Stock Issued
   Flexitrust                                       (279)                               598
   Businesses Acquired                                 4
Compensation Plans                                   269
Adjustments to Market
   Value                                             (46)                                46
                         ----------------------------------------------------------------------------------------------
Balance December 31, 1998    $ 237     $ 342     $ 7,854 $ 6,705     $ (432)       $   (752)   $     -     $13,954
                         ===========================================================================================================

</TABLE>

                              See pages 45-67 for Notes to Financial Statements.

                                    DuPont                                    43
<PAGE>   5
                              Financial Statements

       E.I. du Pont de Nemours and Company and Consolidated Subsidiaries


<TABLE>
<CAPTION>
Consolidated Statement of Cash Flows
(Dollars in millions)
- -------------------------------------------------------------------------------------------------
                                                               1998          1997         1996
                                                             ------------------------------------
<S>                                                          <C>           <C>          <C>
Cash and Cash Equivalents at Beginning of Year               $ 1,004       $ 1,066      $ 1,408
                                                             ------------------------------------
Cash Provided by Continuing Operations
Net Income                                                     4,480         2,405        3,636
Adjustments to Reconcile Net Income to Cash
  Provided by Continuing Operations:
  Net Income from Discontinued Operations                     (3,033)         (973)        (705)
  Extraordinary Charge from Early Retirement of
    Debt (Note 8)                                                275            --           --
  Depreciation and Amortization                                1,452         1,361        1,526
  Purchased In-Process Research and
    Development (Note 5)                                       1,443         1,478           --
  Other Noncash Charges and Credits--Net                        (319)          569         (270)
  Decrease (Increase) in Operating Assets:
    Accounts and Notes Receivable                               (580)         (783)        (262)
    Inventories and Other Operating Assets                        34          (335)        (258)
  Increase (Decrease) in Operating Liabilities:
    Accounts Payable and Other Operating Liabilities             254           (20)         151
    Accrued Interest and Income Taxes (Notes 4 and 7)            126           325          291
                                                             ------------------------------------
      Cash Provided by Continuing Operations                   4,132         4,027        4,109
                                                             ------------------------------------
Investment Activities of Continuing Operations (Note 23)
Purchases of Property, Plant and Equipment                    (2,240)       (2,089)      (1,665)
Investments in Affiliates                                        (63)       (1,920)         (82)
Payments for Businesses (Net of Cash Acquired)                (3,282)       (1,238)         (75)
Proceeds from Sales of Assets                                    946           558          996
Net Proceeds from Sale of Interest in Petroleum
  Operations (Note 2)                                          4,206            --           --
Net Decrease (Increase) in Short-Term Financial
  Instruments                                                    131           115         (197)
Miscellaneous--Net                                               124           552           36
                                                             ------------------------------------
  Cash Used for Investment Activities of
    Continuing Operations                                       (178)       (4,022)        (987)
                                                             ------------------------------------
Financing Activities
Dividends Paid to Stockholders                                (1,549)       (1,401)      (1,261)
Net Increase (Decrease) in Short-Term Borrowings               1,574         1,737         (954)
Long-Term and Other Borrowings:
  Receipts                                                     6,335         6,462        3,194
  Payments                                                    (8,966)       (5,562)      (5,171)
Acquisition of Treasury Stock (Note 21)                         (704)       (1,747)          --
Repurchase of Warrants (Note 21)                                  --            --         (504)
Proceeds from Exercise of Stock Options                          257           116          315
Increase (Decrease) in Minority Interests                         --           (56)         363
                                                             ------------------------------------
  Cash Used for Financing Activities                          (3,053)         (451)      (4,018)
                                                             ------------------------------------
Net Cash Flow from Discontinued Operations                      (568)          483          606
Effect of Exchange Rate Changes on Cash                           97           (99)         (52)
                                                             ------------------------------------
Cash and Cash Equivalents at End of Year                     $ 1,434*      $ 1,004      $ 1,066
                                                             ------------------------------------
Increase (Decrease) in Cash and Cash Equivalents             $   430       $   (62)     $  (342)
=================================================================================================
</TABLE>

*Includes cash and cash equivalents classified in the Consolidated Balance Sheet
 within "Net Assets of Discontinued Operations."

                              See pages 45-67 for Notes to Financial Statements.

44                                  DuPont
<PAGE>   6
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


1.   Summary of Significant Accounting Policies

DuPont observes the generally accepted accounting principles described below.
These, together with the other notes that follow, are an integral part of the
consolidated financial statements.

Basis of Consolidation

The accounts of wholly owned and majority-owned subsidiaries are included in the
consolidated financial statements. Investments in affiliates owned 20 percent or
more are accounted for under the equity method. Other securities and
investments, excluding marketable securities, are generally carried at cost. The
company's petroleum business is reported as discontinued operations and is
discussed in Note 2.

Subsidiary Stock Transactions

Gains or losses arising from issuances by a subsidiary of its own stock in a
public offering are recorded as nonoperating income.

Inventories

Substantially all inventories are valued at cost as determined by the last-in,
first-out (LIFO) method; in the aggregate, such valuations are not in excess of
market. Elements of cost in inventories include raw materials, direct labor and
manufacturing overhead. Stores and supplies are valued at cost or market,
whichever is lower; cost is generally determined by the average cost method.

Property, Plant and Equipment

Property, plant and equipment (PP&E) is carried at cost and, where placed in
service in 1995 and following years, is depreciated using the straight-line
method. PP&E placed in service prior to 1995 is depreciated under the
sum-of-the-years' digits method and other substantially similar methods.
Depreciation rates are based on estimated useful lives ranging from 3 to 25
years. Capitalizable costs associated with internal use of computer software are
amortized on a straight-line basis over 5 to 7 years. Generally, for PP&E
acquired in 1991 and later, the gross carrying value and related accumulated
depreciation of assets surrendered, retired, sold or otherwise disposed of are
removed from the accounts and included in determining gain or loss on such
disposals. For disposals of PP&E acquired prior to 1991, the gross carrying
value is charged to accumulated depreciation and any salvage or other recovery
therefrom is credited to accumulated depreciation.

Maintenance and repairs are charged to operations; replacements and betterments
are capitalized.

Intangible Assets

Identifiable intangible assets such as purchased technology, patents and
trademarks are amortized using the straight-line method over their estimated
useful lives, generally for periods ranging from 5 to 40 years. Goodwill is
amortized over periods up to 40 years using the straight-line method. The
company continually evaluates the reasonableness of its amortization of
intangibles. In addition, if it becomes probable that expected future
undiscounted cash flows associated with intangible assets are less than their
carrying value, the assets are written down to their fair value.

Environmental Liabilities and Expenditures

Accruals for environmental matters are recorded in operating expenses when it is
probable that a liability has been incurred and the amount of the liability can
be reasonably estimated. Accrued liabilities do not include claims against third
parties and are not discounted.

Costs related to environmental remediation are charged to expense. Other
environmental costs are also charged to expense unless they increase the value
of the property and/or mitigate or prevent contamination from future operations,
in which event they are capitalized.

Income Taxes

The provision for income taxes has been determined using the asset and liability
approach of accounting for income taxes. Under this approach, deferred taxes
represent the future tax consequences expected to occur when the reported
amounts of assets and liabilities are recovered or paid. The provision for
income taxes represents income taxes paid or payable for the current year plus
the change in deferred taxes during the year. Deferred taxes result from
differences between the financial and tax bases of the company's assets and
liabilities and are adjusted for changes in tax rates and tax laws when changes
are enacted. Valuation allowances are recorded to reduce deferred tax assets
when it is more likely than not that a tax benefit will not be realized.

Provision has been made for income taxes on unremitted earnings of subsidiaries
and affiliates, except for subsidiaries in which earnings are deemed to be
permanently invested. Investment tax credits or grants are accounted for in the
period earned (the flow-through method).



                                    DuPont                                   45
<PAGE>   7
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


Foreign Currency Translation

The U.S. dollar is the "functional currency" of the company's worldwide
continuing operations. All foreign currency asset and liability amounts are
remeasured into U.S. dollars at end-of-period exchange rates, except for
inventories, prepaid expenses and property, plant and equipment, which are
remeasured at historical rates. Foreign currency income and expenses are
remeasured at average exchange rates in effect during the year, except for
expenses related to balance sheet amounts remeasured at historical exchange
rates. Exchange gains and losses arising from remeasurement of foreign
currency-denominated monetary assets and liabilities are included in income in
the period in which they occur.

Hedging and Trading Activities

The company routinely uses forward exchange contracts to hedge its net exposure,
by currency, related to monetary assets and liabilities denominated in
currencies other than the U.S. dollar. Exchange gains and losses associated with
these contracts, net of their related tax effects, are included in income in the
period in which they occur and substantially offset the exchange gains and
losses arising from remeasurement as described above. As a result, net exchange
gains and losses are not material in amount.

The company selectively enters into forward exchange contracts and similar
agreements to effectively convert firm foreign currency commitments to
functional currency-denominated transactions. Gains and losses on these firm
commitment hedges are deferred and included in the functional currency
measurement of the related foreign currency-denominated transactions. Changes in
the fair value of forward exchange contracts that do not qualify for hedge
accounting treatment are reflected in income in the period the change occurs.

The company enters into interest rate swap agreements as part of its program to
manage the fixed and floating interest rate mix of its total debt portfolio and
related overall cost of borrowing. The differential to be paid or received is
accrued as interest rates change and is recognized in income over the life of
the agreements.

The company enters into commodity futures contracts to hedge its exposure to
price fluctuations for certain raw material purchases. Gains and losses on these
hedge contracts are deferred and included in the measurement of the related
transaction.

In the event that a derivative designated as a hedge of a firm commitment or
anticipated transaction is terminated prior to the maturation of the hedged
transaction, gains or losses realized at termination are deferred and included
in the measurement of the hedged transaction. If a hedged transaction matures,
or is sold, extinguished or terminated prior to the maturity of a derivative
designated as a hedge of such transaction, gains or losses associated with the
derivative through the date the transaction matured are included in the
measurement of the hedged transaction and the derivative is reclassified as for
trading purposes. Derivatives designated as a hedge of an anticipated
transaction are reclassified as for trading purposes if the anticipated
transaction is no longer likely to occur.

In the Consolidated Statement of Cash Flows, the company reports the cash flows
resulting from its hedging activities in the same category as the related item
that is being hedged.

Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

Reclassifications

Certain reclassifications of prior years' data have been made to conform to 1998
classifications.


2.   Discontinued Operations

On September 28, 1998, the company announced that the Board of Directors had
approved a plan to divest the company's 100 percent-owned petroleum business
(Conoco Inc.). On October 21, 1998, Conoco sold, in an initial public offering
(IPO), 191,456,427 shares of Conoco Class A common stock at $23 per share for
net proceeds of $4,228, which were remitted to DuPont to repay a portion of
Conoco's intercompany indebtedness to DuPont. In addition, $22 in other costs
directly related to the IPO were incurred. The company intends to complete the
divestiture with a tax-free split off by exchanging its remaining Conoco shares
(69.5 percent) for DuPont shares no later than third quarter 1999. The company
has not recognized a deferred tax liability for the difference between the book
basis and tax basis of its investment in Conoco's common stock because the
company does not expect this basis difference to become subject to tax. The


46                                  DuPont
<PAGE>   8
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


company's consolidated financial statements and notes report its petroleum
business as discontinued operations. Prior periods have been restated. Results
reported separately by Conoco are reported on a stand-alone basis and may differ
from results based on discontinued operations reporting as discussed below. In
addition, beginning October 22, 1998, the company's results from discontinued
operations reflect minority interests of 30.5 percent.

Income from operations of discontinued business reflects Conoco's operations
through September 30, 1998. Effective October 1, 1998, Conoco's results are
reported as part of gain on disposal of discontinued business, and include the
gain realized by the company from the IPO. For the three months and year ended
December 31, 1998, such gain is $2,439. This includes a loss from Conoco's
operations of $147 (after a tax benefit of $116) and reflects nonrecurring
charges of $164; principally $127 for compensation expense for options granted
by Conoco in substitution for DuPont options held by Conoco employees, $69 for
employee separation costs and property impairments, partially offset by $32 of
asset sales. In addition, net gain from sale of stock by subsidiary includes
charges of $40 that are a direct result of the decision to divest Conoco. Also,
1998 results of income from operations of discontinued business includes a $31
tax benefit related to the sale of an international subsidiary, partly offset by
a $28 litigation accrual in the United States. The year ended December 31, 1997,
includes charges of $112 for impairment of nonrevenue producing properties and
$55 for a write-down of an office building held for sale, substantially offset
by a $161 gain on the sale of certain North Sea producing and exploration
properties. The year ended December 31, 1996, includes charges of $63 for
write-down of investment in an European natural gas marketing joint venture and
$22 principally for employee separation costs in the United States, partly
offset by a net benefit of $44 related to environmental insurance recoveries.

The cumulative translation adjustment reflected in the Consolidated Balance
Sheet and Consolidated Statement of Stockholders' Equity pertains to Conoco's
operations. Effective January 1, 1996, local currency was designated as the
functional currency for Conoco's integrated European petroleum operations to
properly reflect changed circumstances in the primary economic environment in
which these subsidiaries operate. For Conoco subsidiaries whose functional
currency is local currency, assets and liabilities denominated in local currency
are translated into U.S. dollars at end-of-period exchange rates, and resultant
translation adjustments are reported as a separate component of stockholders'
equity.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Income from Operations of
Discontinued Business (1)             1998          1997        1996
- --------------------------------------------------------------------------------
<S>                                   <C>         <C>         <C>
Net Sales                             $14,446     $20,990     $20,166
Income Before Income Taxes and
  Minority Interests (2)                  921       1,918       1,654
Provision for Income Taxes                311         921         930
Minority Interests                         16          24          19
                                     -------------------------------------------
Income from Operations,
  Net of Income Taxes                 $   594     $   973     $   705
================================================================================
</TABLE>

(1)  1998 results are nine months ended September 30, 1998.

(2)  Includes net interest expense allocations (based on the ratio of net assets
     of discontinued operations to consolidated net assets plus debt) of $240
     through September 30, 1998, $248 for 1997, and $285 for 1996.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Gain on Disposal of Discontinued Business (1)                           1998
- --------------------------------------------------------------------------------
<S>                                                                   <C>
Net Sales                                                             $ 4,737
(Loss) Before Income Taxes and
 Minority Interests (2)                                                  (308)
Provision for Income Taxes                                               (116)
Minority Interests                                                        (45)
                                                                     -----------
(Loss) from Operations, Net of Income Taxes                              (147)
Net Gain from Sale of Stock by Subsidiary                               2,586
                                                                     -----------
Gain on Disposal of Discontinued Business,
  Net of Income Taxes                                                 $ 2,439
================================================================================
</TABLE>

(1)  Three months ended December 31, 1998.

(2)  Includes interest expense allocation (based on specific debt to be assumed)
     of $93.

The 1998 effective income tax rate (EITR) of 31.8 percent on Conoco's operations
is significantly lower than the 1997 EITR of 48.0 percent and the 1996 EITR of
56.2 percent due to a larger U.S. alternative fuels tax credit, realization of a
tax benefit on the sale of a subsidiary and a greater percentage of earnings in
countries with lower effective tax rates.

It is expected that there will be a gain on ultimate disposal of Conoco, taking
into account its estimated results in 1999.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Net Assets of Discontinued Operations                      1998         1997
- --------------------------------------------------------------------------------
<S>                                                    <C>           <C>
December 31
Cash and Cash Equivalents                              $    375      $     --
Other Current Assets                                      2,864         2,938
Property, Plant and Equipment - net                      11,438        10,982
Other Assets                                              2,011         1,490
Current Liabilities                                      (2,473)       (3,023)
Other Liabilities                                        (4,115)       (3,680)
Minority Interests                                       (1,683)         (309)
                                                      --------------------------
  Net Assets of Discontinued Operations                $  8,417      $  8,398
================================================================================
</TABLE>


                                    DuPont                                   47
<PAGE>   9
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


As of December 31, 1998, DuPont and Conoco had an intercompany receivable and
payable, respectively, for $4,596 that has been eliminated for purposes of
presenting net assets of discontinued operations. As described in the
Restructuring, Transfer and Separation Agreement, Conoco is obligated to repay
all outstanding debt owed to DuPont at such time as DuPont's voting power
becomes less than 50 percent of Conoco.

3.   Other Income

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                               1998       1997        1996
                                            ------------------------------------
<S>                                          <C>         <C>        <C>
Royalty income                               $  132      $   64     $   72
Interest income, net of
  miscellaneous interest expense                112         131        118
Equity in earnings of affiliates
  (see Note 14)                                 278         643        694
Sales of assets                                 375*         64        162
Miscellaneous income and
  expenses--net                                  84         103         55
                                            ------------------------------------
                                             $  981      $1,005     $1,101
- --------------------------------------------------------------------------------
</TABLE>

*    Includes a $217 gain on the sale of substantially all of the company's
     remaining interest in CONSOL Energy Inc.

4.   Interest Expense

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                             1998        1997         1996
                                            ------------------------------------
<S>                                          <C>         <C>          <C>
Interest incurred                            $640        $469         $479
Less: Interest capitalized                    120          80           70
                                            ------------------------------------
                                             $520        $389         $409
- --------------------------------------------------------------------------------
</TABLE>

Interest paid (net of amounts capitalized) was $553 in 1998, $324 in 1997 and
$451 in 1996.

5.   Purchased In-Process Research and Development

Purchased in-process research and development represents the value assigned in a
purchase business combination to research and development projects of the
acquired business that were commenced but not yet completed at the date of
acquisition, for which technological feasibility has not been established and
which have no alternative future use in research and development activities or
otherwise. In accordance with Statement of Financial Accounting Standards No. 2,
"Accounting for Research and Development Costs," as interpreted by FASB
Interpretation No. 4, amounts assigned to purchased in-process research and
development meeting the above criteria must be charged to expense at the date of
consummation of the purchase business combination.

In 1997, a charge of $903 was recorded in conjunction with the purchase of a 20
percent interest in Pioneer Hi-Bred International Inc. In addition, charges of
$500 and $75 were recorded in conjunction with the purchase of Protein
Technologies International and the ICI polyester resins and intermediates
businesses, respectively, based on preliminary allocations of purchase price.

In 1998, charges of $60 and $103 were recorded to revise the preliminary
allocation for Protein Technologies International, and the ICI polyester resins
and intermediates businesses, respectively, upon revision of preliminary
purchase price allocations for these acquisitions. In addition, a charge of $50
was recorded in conjunction with the 1998 acquisition of the ICI polyester films
business based on preliminary allocations of the purchase price for this
acquisition and a charge of $1,230 was recorded in conjunction with the 1998
purchase of Merck & Co.'s interest in The DuPont Merck Pharmaceutical Company,
based on preliminary allocations of purchase price. See Note 23.

6.   Employee Separation Costs and Write-down of Assets

During 1998 the company recorded charges totaling $577 directly related to
management decisions to implement company-wide productivity improvement
initiatives. Charges from these initiatives reduced segment earnings as follows:
Agriculture & Nutrition - $19; Nylon Enterprise - $231; Performance Coatings &
Polymers - $25; Pigments & Chemicals - $23; Polyester Enterprise - $158;
Specialty Fibers - $6; Specialty Polymers - $47; Other - $68.

These charges included $310 related to employee separation costs, substantially
all of which were for estimated involuntary and voluntary termination payments
for approximately 4,100 employees, and were based on plans that identified the
number of employees to be terminated, their functions and their businesses.
Approximately two-thirds of the reductions will occur in the United States. As
of December 31, 1998, about 2,700 employees have been terminated under these
initiatives, and about $134 has been settled and charged against the related
liability. The remaining 1,400 employee terminations will occur in 1999.


48                                  DuPont
<PAGE>   10
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


The remaining charge of $267 relates to write-downs of property, plant and
equipment, principally due to the shutdown of excess production capacity. The
charge covers the net book value of the facilities and estimated dismantlement
costs less estimated salvage proceeds. The largest component, $114, covers the
shutdown of polyester manufacturing lines at Circleville, Ohio; Cooper River,
South Carolina; Kinston, Cape Fear and Cedar Creek, North Carolina; and
Luxembourg. In addition, $78 represents the shutdown of DuPont Nylon
manufacturing operations at Martinsville, Virginia; Doncaster, United Kingdom;
and Bayswater, Australia. Other charges are principally attributable to the
shutdown of manufacturing and other facilities within the Pigments & Chemicals
and Other segments. DuPont expects to complete these activities in 1999.

In the fourth quarter of 1998, the company also recorded a charge of $56
relating to the impairment of certain intangible assets held for use by the
Pharmaceuticals segment when it was determined that future undiscounted cash
flows associated with these assets were insufficient to recover their carrying
value. The impaired assets principally represent the company's historical
ownership interest in product rights and license agreements contributed in 1991
by Merck & Co. Inc. to The DuPont Merck Pharmaceutical Company. The assets were
written down to fair value, which was determined on the basis of discounted cash
flows.

During 1997 DuPont and the Agfa-Gevaert Group (Agfa) signed an agreement under
which Agfa would acquire DuPont's global graphic arts and offset printing plates
businesses. Agfa agreed to purchase the company's inventory, manufacturing
facilities in Germany and the United Kingdom, and provide employment to most of
the 2,200 DuPont employees working in these businesses. A decision was made to
dispose of these businesses, which are a component of the Other segment, after
it became apparent that the company would not be a leader in this industry. In
connection with the sale, DuPont recorded a charge of $340 in the third quarter
1997 period. This included $233 to write down assets held for sale to their
estimated net realizable value based on the agreement with Agfa, $53 for
employee separation and other people related costs, and $54 to provide for other
expenses associated with exiting these businesses. The number of people
identified for termination was less than 250. Total remaining reserve balances
are approximately $30 at December 31, 1998. The 1997 loss from operations from
these businesses was not material. The transaction closed during the first
quarter of 1998.

7.   Provision for Income Taxes

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                           1998         1997         1996
                                       -----------------------------------------
<S>                                     <C>          <C>          <C>
Current tax expense:
  U.S. federal                          $   526      $   841      $   718
  U.S. state and local                      (15)          45           23
  International                             447          398          381
                                       -----------------------------------------
          Total                             958        1,284        1,122
                                       -----------------------------------------
Deferred tax expense:
  U.S. federal                             (129)         110          314
  U.S. state and local                       21            3            5
  International                              91          (43)         (25)
                                       -----------------------------------------
          Total                             (17)          70          294
                                       -----------------------------------------
Provision for Income Taxes                  941        1,354        1,416
Stockholders' Equity
  Stock Compensation (1)                    (82)         (96)         (69)
  Minimum Pension Liability (2)             (81)         (18)          (1)
Extraordinary Loss                          (74)          --           --
Discontinued Operations                     195          921          930
                                       -----------------------------------------
Total                                   $   899      $ 2,161      $ 2,276
================================================================================
</TABLE>

(1)  Represents tax benefit of certain stock compensation amounts that are
     deductible for income tax purposes but do not affect net income.

(2)  Represents deferred tax charge for minimum pension liability recorded in
     stockholders' equity. See Note 21.

Total income taxes paid on continuing operations worldwide were $782 in 1998,
$1,094 in 1997 and $1,083 in 1996.


                                    DuPont                                   49
<PAGE>   11
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


Deferred income taxes result from temporary differences between the financial
and tax bases of the company's assets and liabilities. The tax effects of
temporary differences and tax loss/tax credit carryforwards included in the
deferred income tax provision are as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                              1998        1997       1996
                                            ------------------------------------
<S>                                          <C>         <C>        <C>
Depreciation                                 $ 185       $  96      $  28
Accrued employee benefits                       71          63        122
Other accrued expenses                          19           9        (63)
Inventories                                     54         (36)       (31)
Unrealized exchange gains (losses)             (11)         (6)         5
Investment in subsidiaries and
  affiliates                                   (73)        (38)       (19)
Amortization of intangibles                   (504)*        (2)         5
Other temporary differences                    158          61        173
Tax loss/tax credit carryforwards               35         (50)       119
Valuation allowance change-- net                49         (27)       (45)
                                            ------------------------------------
                                             $ (17)      $  70      $ 294
================================================================================
</TABLE>

  *  Amortization of intangibles includes the write-off of in-process research
     and development for DuPont Pharmaceuticals, Polyester Films, and Polyester
     Resins & Intermediates.

The significant components of deferred tax assets and liabilities at December
31, 1998 and 1997, are as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                        1998                   1997
                              --------------------------------------------------
Deferred Tax                     Asset   Liability       Asset   Liability
- --------------------------------------------------------------------------------
<S>                             <C>        <C>          <C>      <C>
Depreciation                    $   --     $1,578       $   --     $1,345
Accrued employee benefits        3,075      1,143        2,913        968
Other accrued expenses             454          3          505         25
Inventories                        278         63          331         55
Unrealized exchange gains            8          8            6         19
Tax loss/tax credit
  carryforwards                    118         --          130         --
Investment in subsidiaries
  and affiliates                    77         35           62         93
Amortization of intangibles        519        178           21         --
Other                              227        921          237        662
                              --------------------------------------------------
Total                           $4,756     $3,929       $4,205     $3,167
                                          -------                 --------------
Less: Valuation
  allowance                        220                     171
                              --------                 -------
Net                             $4,536                  $4,034
================================================================================
</TABLE>

Current deferred tax liabilities (included in the Consolidated Balance Sheet
caption "Income Taxes") were $14 and $7 at December 31, 1998 and 1997,
respectively. In addition, deferred tax assets of $406 and $683 were included in
Other Assets at December 31, 1998 and 1997, respectively (see Note 15).

An analysis of the company's effective income tax rate follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                               1998       1997       1996
                                             -----------------------------------
<S>                                            <C>        <C>        <C>
Statutory U.S. federal income tax rate         35.0%      35.0%      35.0%
International operations                        2.0       (3.5)        --
Lower effective tax rate on export sales       (1.9)      (2.2)      (1.4)
In-process research and development             1.7       17.9*        --
Other--net                                     (0.8)       0.7       (1.3)
                                             -----------------------------------
Effective income tax rate                      36.0%      47.9%      32.3%
================================================================================
</TABLE>

  *  Charges associated with the Pioneer and PTI transactions were not tax
     effected because these purchases were stock acquisitions rather than asset
     purchases. See Note 5.

Income from continuing operations before income taxes and minority interests
shown below are based on the location of the corporate unit to which such
earnings are attributable. However, since such earnings are often subject to
taxation in more than one country, the income tax provision shown above as U.S.
or international does not correspond to the earnings set forth below.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                               1998       1997       1996
                                            ------------------------------------
<S>                                          <C>        <C>        <C>
United States (including exports)            $1,388     $1,820     $3,226
International                                 1,225      1,009      1,161
                                            ------------------------------------
                                             $2,613     $2,829     $4,387
================================================================================
</TABLE>

At December 31, 1998, unremitted earnings of subsidiaries outside the United
States totaling $5,996 were deemed to be permanently invested. No deferred tax
liability has been recognized with regard to the remittance of such earnings. It
is not practicable to estimate the income tax liability that might be incurred
if such earnings were remitted to the United States.

Under the tax laws of various jurisdictions in which the company operates,
deductions or credits that cannot be fully utilized for tax purposes during the
current year may be carried forward, subject to statutory limitations, to reduce
taxable income or taxes payable in a future year. At December 31, 1998, the tax
effect of such carryforwards approximated $118. Of this amount, $77 has no
expiration date and $41 expires after 1999 but before 2003.

8.   Extraordinary Charge from Early Extinguishment of Debt

In September 1998, the company redeemed various outstanding notes and debentures
with an aggregate principal value of $1,633. The extraordinary charge of $201,
net of a tax benefit of $74, principally represents call premium and unamortized
discount. The effective income tax rate of 26.9 percent reflects the mix of U.S.
and international operations.



50                                  DuPont
<PAGE>   12
                         Notes to Financial Statements

                    (Dollars in millions, except per share)



9.   Earnings Per Share of Common Stock

Basic earnings per share is computed by dividing income available to common
stockholders (the numerator) by the weighted-average number of common shares
(the denominator) for the period. The numerator for both income from continuing
operations and net income is reduced by preferred dividends of $10. For diluted
earnings per share, the numerator is adjusted to recognize reduced share of
earnings assuming options in subsidiary company stock are exercised if the
effect of this adjustment is dilutive. For 1998 this effect was anti-dilutive.
The denominator is based on the following weighted-average number of common
shares and includes the additional common shares that would have been
outstanding if potentially dilutive common shares had been issued:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                         1998               1997             1996
- --------------------------------------------------------------------------------
<S>                 <C>               <C>               <C>
Basic               1,128,826,525     1,130,755,483     1,121,350,592
Diluted             1,145,347,028     1,149,803,450     1,139,822,755
================================================================================
</TABLE>

Average stock options of 5,527,629 and 4,930,300 are not included in the diluted
earnings per share calculation for the years 1998 and 1997, respectively, since
in each case the exercise price is greater than the average market price.

Shares held by the Flexitrust are not considered as outstanding in computing the
weighted-average number of common shares. See Notes 21 and 22


10.  Cash and Cash Equivalents and Marketable Securities

Cash equivalents represent investments with maturities of three months or less
from time of purchase. They are carried at cost plus accrued interest, which
approximates fair value because of the short maturity of these instruments. Cash
and cash equivalents are used in part to support a portion of the company's
commercial paper program.

Marketable securities represent investments in fixed and floating rate financial
instruments classified as available-for-sale securities and reported at fair
value.


11.  Accounts and Notes Receivable

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                              1998          1997
- --------------------------------------------------------------------------------
<S>                                                    <C>           <C>
Trade--net of allowances of $101 in 1998
  and $66 in 1997                                      $3,591        $3,438
Miscellaneous                                             610           871
                                                   -----------------------------
                                                       $4,201        $4,309
================================================================================
</TABLE>

Accounts and notes receivable are carried at amounts that approximate fair value
and include $70 for 1998 and $74 for 1997 due from equity affiliates.

See Note 28 for a description of business segment markets and associated
concentrations of credit risk.


12.  Inventories

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                             1998          1997
- --------------------------------------------------------------------------------
<S>                                                   <C>           <C>
Finished products                                     $2,209        $2,115
Semifinished products                                    836           827
Raw materials and supplies                               749           659
                                                   -----------------------------
Total                                                  3,794         3,601
Less: Adjustment of inventories
  to a last-in, first-out
  (LIFO) basis                                           665           809
                                                   -----------------------------
                                                      $3,129        $2,792
================================================================================
</TABLE>

Inventory values before LIFO adjustment are generally determined by the average
cost method, which approximates current cost. Inventories valued under the LIFO
method comprised 85 percent of consolidated inventories before LIFO adjustment
at December 31, 1998 and 1997.


13.  Property, Plant and Equipment

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                             1998           1997
- --------------------------------------------------------------------------------
<S>                                                  <C>            <C>
Buildings                                            $ 3,889        $ 3,464
Equipment                                             28,485         27,326
Land                                                     288            260
Construction                                           2,066          1,861
                                                   -----------------------------
                                                     $34,728        $32,911
================================================================================
</TABLE>

Property, plant and equipment includes gross assets acquired under capital
leases of $115 and $130 at December 31, 1998 and 1997, respectively; related
amounts included in accumulated depreciation and amortization were $54 and $57
at December 31, 1998 and 1997, respectively.



                                    DuPont                                    51
<PAGE>   13
                         Notes to Financial Statements

                    (Dollars in millions, except per share)



14.  Summarized Financial Information for Affiliated Companies

Summarized combined financial information for affiliated companies for which the
equity method of accounting is used (see Note 1, Basis of Consolidation) is
shown below on a 100 percent basis. The most significant of these affiliates at
December 31, 1998, are DuPont Dow Elastomers LLC (50 percent owned by DuPont)
and Pioneer Hi-Bred International Inc. (20 percent owned by DuPont). Dividends
received from equity affiliates were $239 in 1998, $676 in 1997 and $776 in
1996.

<TABLE>
<CAPTION>
                                                  Year Ended December 31
- --------------------------------------------------------------------------------
Results of operations                       1998 (1)       1997         1996
- --------------------------------------------------------------------------------
<S>   <C>                                  <C>           <C>          <C>
Sales (2)                                  $8,656        $7,778       $7,604
Earnings before income taxes                  863         1,166          803
Net Income                                    689         1,027          661
                                        ----------------------------------------
DuPont's equity in earnings
  of affiliates
  Partnerships (3)                         $  162        $  493       $  610
  Corporate joint ventures
    (after income taxes)                      116           150           84
                                        ----------------------------------------
                                           $  278        $  643 (4)   $  694 (5)
================================================================================
</TABLE>

(1)  Effective July 1, 1998, DuPont purchased Merck's 50 percent interest in
     DuPont Merck and results are fully consolidated. Effective November 5,
     1998, substantially all of DuPont's 50 percent interest in CONSOL Energy
     Inc. was sold.

(2)  Includes sales to DuPont of $614 in 1998, $685 in 1997 and $734 in 1996.

(3)  Income taxes are reflected in the company's provision for income tax.

(4)  Includes a benefit of $115 from the gain on the sale by DuPont Merck of its
     generic and multisource product lines.

(5)  Reflects a more favorable allocation of DuPont Merck operating income to
     recognize the performance of assets originally contributed to the venture
     by DuPont.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Financial position at December 31                    1998           1997
- --------------------------------------------------------------------------------
<S>                                               <C>            <C>
Current assets                                    $ 3,428        $ 4,234
Noncurrent assets                                   3,838          7,239
                                              ----------------------------------
  Total assets                                    $ 7,266        $11,473
                                              ----------------------------------
Short-term borrowings*                            $ 1,022        $   633
Other current liabilities                           1,569          2,128
Long-term borrowings*                                 679            874
Other long-term liabilities                           231          2,857
                                              ----------------------------------
  Total liabilities                               $ 3,501        $ 6,492
                                              ----------------------------------
DuPont's investment in affiliates
  (includes advances)                             $ 1,796        $ 2,372
================================================================================
</TABLE>

   * DuPont's pro rata interest in total borrowings was $705 in 1998 and $688 in
     1997 of which $168 in 1998 and $192 in 1997 was guaranteed by the company.
     These amounts are included in the guarantees disclosed in Note 26.


15.  Other Assets

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                             1998           1997
- --------------------------------------------------------------------------------
<S>                                                    <C>            <C>
Prepaid pension cost                                   $1,362         $1,602
Intangible assets - net of accumulated
  amortization of $225 in 1998 and
  $130 in 1997                                          2,566*         1,270
Other securities and investments                           84            185
Deferred income taxes (see Note 7)                        406            683
Miscellaneous                                             538            471
                                                   -----------------------------
                                                       $4,956         $4,211
================================================================================
</TABLE>

   * Includes $1,070 for DuPont Pharmaceuticals, and increases of $58 reflecting
     revision of preliminary purchase price allocations for businesses purchased
     from Ralston Purina and ICI.

Other securities and investments includes $97 at December 31, 1997, representing
marketable securities classified as available for sale and reported at fair
value. The remainder represents numerous small investments in securities for
which there are no quoted market prices and for which it is not practicable to
determine fair value. Such securities are reported at cost.


16.  Accounts Payable

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                             1998           1997
- --------------------------------------------------------------------------------
<S>                                                    <C>           <C>
Trade                                                  $1,206        $1,074
Payables to banks                                         162           188
Compensation awards                                       216           267
Miscellaneous                                             345           392
                                                   -----------------------------
                                                       $1,929        $1,921
================================================================================
</TABLE>

Payables to banks represents checks issued on certain disbursement accounts but
not presented to the banks for payment. The reported amounts shown above
approximate fair value because of the short maturity of these obligations.



52                                  DuPont
<PAGE>   14
                         Notes to Financial Statements

                    (Dollars in millions, except per share)



17.  Short-Term Borrowings and Capital Lease Obligations

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                         1998           1997
- --------------------------------------------------------------------------------
<S>                                               <C>           <C>
Commercial paper                                  $5,978        $2,576
Private placement commercial paper                    --         2,896
Non-U.S. bank borrowings                             180           197
Medium-term notes payable within
  one year                                           140           128
Long-term borrowings payable
  within one year                                    300           300
Industrial development bonds
  payable on demand                                   26            51
Capital lease obligations                              5             4
                                              ----------------------------------
                                                  $6,629        $6,152
================================================================================
</TABLE>

The estimated fair value of the company's short-term borrowings, including
interest rate financial instruments, based on quoted market prices for the same
or similar issues or on current rates offered to the company for debt of the
same remaining maturities, was $6,700 and $6,200 at December 31, 1998 and 1997,
respectively. The increase in estimated fair value in 1998 was primarily due to
higher short-term borrowing levels.

Unused short-term bank credit lines were approximately $7,400 and $6,200 at
December 31, 1998 and 1997, respectively. These lines support short-term
industrial development bonds, a portion of the company's commercial paper
program and other borrowings.

The weighted-average interest rate on short-term borrowings outstanding at
December 31, 1998 and 1997, was 5.4 percent and 5.9 percent, respectively.


18.  Other Accrued Liabilities

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                                 1998          1997
- --------------------------------------------------------------------------------
<S>                                                       <C>           <C>
Payroll and other employee-related costs                  $  673        $  582
Accrued postretirement benefits cost (see Note 24)           302           317
Productivity initiatives                                     165            --
Miscellaneous                                              1,782         2,125
                                                       -------------------------
                                                          $2,922        $3,024
================================================================================
</TABLE>

19.  Long-Term Borrowings and Capital Lease Obligations

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                           1998           1997
- --------------------------------------------------------------------------------
<S>                                                 <C>           <C>
U.S. dollar:
  Industrial development bonds due 2007-2026        $  309        $  333
  Medium-term notes due 2000-2048 (1)                  653           437
  7.50% notes due 1999                                  --           301
  9.15% notes due 2000                                 301           303
  6.00% debentures due 2001 ($660 face
    value, 13.95% yield to maturity)                    --           505
  6.50% notes due 2002                                 499           498
  6.75% notes due 2002                                 300           299
  8.00% notes due 2002                                 252           252
  8.50% notes due 2003 (2)                             141           300
  8.13% notes due 2004                                 331           331
  8.25% notes due 2006                                 282           282
  6.75% notes due 2007                                 499           499
  8.25% debentures due 2022                             49           372
  7.95% debentures due 2023                             38           299
  6.50% debentures due 2028                            298            --
  7.50% debentures due 2033                             23           247
6.25% Swiss franc notes due 2000 (3)                   103           103
Other loans (various currencies)
  due 1999-2008                                        363           475
Capital lease obligations                               54            61
                                               ---------------------------------
                                                    $4,495        $5,897
================================================================================
</TABLE>

(1)  Average interest rates at December 31, 1998 and 1997, were 6.4 percent and
     7.1 percent, respectively.

(2)  The company entered into an interest rate swaption agreement as part of the
     program to manage the fixed and floating interest rate mix of total
     borrowings. The agreement gives the swaption counterparty the one-time
     option to put the company into an interest rate swap with a notional amount
     of $300, whereby the company would, over the remaining term of the note,
     receive fixed rate payments essentially equivalent to the fixed interest
     rate of the underlying note, and pay the counterparty a floating rate of
     interest essentially equivalent to the rate the company pays on its
     commercial paper. If exercised, the swaption would effectively convert the
     note to a floating rate obligation over the remaining maturity of the note.
     The premium received from the counterparty for this swaption is being
     amortized to income, using the effective interest method, over the
     remaining maturity of the note. The interest rate swaption agreement was
     reduced to a notional amount of $141 in September 1998. The fair value and
     carrying value of the swaption at December 31, 1998 and 1997, was not
     material.

(3)  Represents notes denominated as 150 million Swiss francs with a 6.25
     percent Swiss franc fixed interest rate. Concurrent with the issuance of
     these notes, the company entered into an interest and principal currency
     swap that effectively established a $103 fixed principal amount with a 6.9
     percent U.S. dollar fixed interest rate.



                                    DuPont                                   53
<PAGE>   15
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


At December 31, 1998, average interest rates on industrial development bonds and
on other loans (various currencies) were 6.1 percent and 7.0 percent,
respectively, the same as December 31, 1997.

Maturities of long-term borrowings, together with sinking fund requirements for
years ending after December 31, 1999, are $628, $107, $1,242 and $428 for the
years 2000, 2001, 2002 and 2003, respectively.

The estimated fair value of the company's long-term borrowings, including
interest rate financial instruments, based on quoted market prices for the same
or similar issues or on current rates offered to the company for debt of the
same remaining maturities was $4,900 and $6,500 at December 31, 1998 and 1997,
respectively.

20.  Other Liabilities

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
December 31                                              1998          1997
- --------------------------------------------------------------------------------
<S>                                                    <C>           <C>
Accrued postretirement benefits cost                   $5,555        $5,548
Reserves for employee-related costs                       921           956
Miscellaneous                                           1,164           940
                                                      --------------------------
                                                       $7,640        $7,444
================================================================================
</TABLE>

21.  Stockholders' Equity

In January 1997 the company approved plans to purchase and retire up to 20
million shares of common stock to offset dilution resulting from shares issued
under its compensation programs. In 1997 the company spent $327 to purchase and
retire 5,833,100 shares of DuPont common stock under this program. In 1998 the
company spent $769 to purchase 12,814,162 shares, of which 6 million shares were
purchased in a private placement transaction. Under the terms of this private
placement agreement, the final settlement payment resulted in the issuance of
333,862 treasury shares valued at $20. In 1998, 12,480,300 shares were retired.

In 1997, 509,778 shares were issued for 100 percent of the capital stock of
Pfister Hybrid Corn Company. Also in 1997, 22.5 million shares were issued for
100 percent of the capital stock of Protein Technologies International (PTI).
Immediately subsequent to the PTI transaction, 22.5 million shares were
repurchased for $1,420 ($63.13 a share) in two private placement transactions.
The purchase price for one transaction for 16 million shares was subject to
adjustment under terms of the private placement agreement. The company received
$65 in 1998 as a final settlement payment associated with this transaction. The
remaining 6.5 million shares were purchased from the DuPont Pension Trust Fund
for $410. Also in 1998, 72,326 shares valued at $4.4 were issued for final
settlement of 1997 acquisitions, principally PTI.

Additional paid-in capital (compensation plans) includes $66 and $38 at December
31, 1998 and 1997, respectively, related to amounts accrued for variable
options.

In July 1996 DuPont repurchased warrants from Seagram for $504. Coincident with
the repurchase, the company retired 312 million shares of common stock held as
treasury stock.

Shares held by the Flexitrust are used to satisfy existing employee compensation
and benefit programs.

Set forth below is a reconciliation of common stock share activity for the three
years ended December 31, 1998:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------
Shares of Common Stock                                           Held In
                                                    -------------------------------
                                       Issued          Flexitrust       Treasury
                                  -------------------------------------------------
<S>                               <C>                 <C>             <C>
Balance January 1, 1996            1,470,085,448      (47,092,352)    (312,000,000)
                                  -------------------------------------------------
Issued                                         2       16,100,762
Treasury Stock Retirement           (312,000,000)                      312,000,000
                                  -------------------------------------------------
Balance December 31, 1996          1,158,085,450      (30,991,590)               -
                                  -------------------------------------------------
Businesses Acquired                   23,009,778
Issued                                                  7,745,843
Treasury Stock
        Acquisition                                                    (28,333,100)
        Retirement                   (28,333,100)                       28,333,100
                                  -------------------------------------------------
Balance December 31, 1997          1,152,762,128      (23,245,747)               -
                                  -------------------------------------------------
Businesses Acquired                       72,326
Issued                                                  9,077,880          333,862
Treasury Stock
        Acquisition                                                    (12,814,162)
        Retirement                   (12,480,300)                       12,480,300
                                  -------------------------------------------------
Balance December 31, 1998          1,140,354,154      (14,167,867)               -
===================================================================================
</TABLE>

54                                  DuPont
<PAGE>   16
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


Statement of Financial Accounting Standards No. 130, "Reporting Comprehensive
Income," was adopted by the company in 1998 and establishes standards for
reporting and displaying comprehensive income. The pretax, tax and after-tax
effects of the components of other comprehensive income are shown below:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Other Comprehensive Income               Pretax      Tax        After-tax
                                       -----------------------------------------
<S>                                     <C>         <C>         <C>
1998
Cumulative Translation Adjustment       $   (23)    $   -       $  (23)
Minimum Pension Liability Adjustment       (193)       81         (112)
                                       -----------------------------------------
Other Comprehensive Income (Loss)       $  (216)    $  81       $ (135)

1997
Cumulative Translation Adjustment       $  (130)    $   -       $ (130)
Minimum Pension Liability Adjustment        (46)       18          (28)
                                       -----------------------------------------
Other Comprehensive Income (Loss)       $  (176)    $  18       $ (158)

1996
Cumulative Translation Adjustment       $   (23)    $   -       $  (23)
Minimum Pension Liability Adjustment         (4)        1           (3)
                                       -----------------------------------------
Other Comprehensive Income (Loss)       $   (27)    $   1       $  (26)
================================================================================
</TABLE>

The minimum pension liability included in the Consolidated Statement of
Stockholders' Equity is $256, $144 and $116 as of December 31, 1998, 1997 and
1996, respectively, and includes $79, $25 and $16 for Conoco for the years then
ended.

Balances of related after-tax components comprising accumulated other
comprehensive loss are summarized below:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Accumulated Other Comprehensive Loss         1998          1997          1996
- --------------------------------------------------------------------------------
<S>                                         <C>           <C>           <C>
December 31
Foreign Currency Translation Adjustment     $(176)        $(153)        $ (23)
Minimum Pension Liability Adjustment         (256)         (144)         (116)
                                           -------------------------------------
                                            $(432)        $(297)        $(139)
================================================================================
</TABLE>

22.  Compensation Plans

From time to time, the Board of Directors has approved the adoption of worldwide
Corporate Sharing Programs. Under these programs, essentially all employees have
received a one-time grant to acquire shares of DuPont common stock at the market
price on the date of grant. Option terms are "fixed" and options generally are
exercisable one year after date of grant and expire 10 years from date of grant.
There are no additional shares that may be subject to option under existing
programs.

Stock option awards under the DuPont Stock Performance Plan may be granted to
key employees of the company and may be "fixed" and/or "variable." The purchase
price of shares subject to option is equal to or in excess of the market price
of the company's stock at the date of grant. Optionees are eligible for reload
options upon the exercise of stock options with the condition that shares
received from the exercise are held for at least two years. A reload option is
granted at the market price on the date of grant and has a term equal to the
remaining term of the original option. The maximum number of reload options
granted is limited to the number of shares subject to option in the original
option times the original option price divided by the option price of the reload
option. Generally, fixed options are fully exercisable from one to three years
after date of grant and expire 10 years from date of grant. Beginning in 1998,
shares otherwise receivable from the exercise of nonqualified options can be
deferred as stock units for a designated future delivery.

Variable stock option grants have been made to certain members of senior
management. These options are subject to forfeiture if, within five years from
the date of grant, the market price of DuPont common stock does not achieve a
price of $75 per share for 50 percent of the options and $90 per share for the
remaining 50 percent. This condition was met in 1998 for options with a $75 per
share hurdle price and, as a result, these options became "fixed" and
exercisable.

The maximum number of shares that may be subject to option for any consecutive
five-year period is 72 million shares. Subject to this limit, additional shares
that may have been made subject to options were 60,949,492 for 1998, 56,842,462
for 1997 and 59,078,926 for 1996.

Awards for 1998 under the DuPont Stock Performance Plan (granted to key
employees in 1999) consisted of 4,946,131 fixed options to acquire DuPont common
stock at the market price ($52.50 per share) on the date of grant and 700,000
fixed options at an exercise price of $75 per share. Fixed options granted at
$52.50 per share vest over a three-year period and, except for the last six
months of the 10-year option term, are exercisable when the market price of
DuPont common stock exceeds the option grant price by 20 percent. Fixed options
granted at an exercise price of $75 per share vest three years from the date of
grant and expire 10 years after the date of grant.


                                    DuPont                                   55
<PAGE>   17
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


The following table summarizes activity for fixed and variable options for the
last three years:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                   Fixed                      Variable
                        --------------------------------------------------------
                           Number         Weighted-      Number      Weighted-
                             of            Average         of         Average
                           Shares           Price        Shares       Price
                        --------------------------------------------------------
<S>                      <C>               <C>        <C>           <C>
January 1, 1996          61,539,178        $23.83             --        --
Granted                   5,674,188        $39.41             --        --
Exercised                17,754,052        $23.56             --        --
Forfeited                    93,186        $25.96             --        --
- --------------------------------------------------------------------------------
December 31, 1996        49,366,128        $25.73             --        --
Granted                  22,937,612        $52.82      4,926,900    $   52.66
Exercised                 9,719,982        $24.47             --        --
Forfeited                 1,373,884        $47.85         95,600    $   52.50
- --------------------------------------------------------------------------------
December 31, 1997        61,209,874        $35.58      4,831,300    $   52.66
Granted                   5,697,539        $59.96        101,000    $   64.90
Reclassified              1,653,748        $52.52     (1,653,748)   $   52.52
Exercised                 8,345,303        $33.70             --           --
Forfeited*                8,786,328        $39.74        629,800    $   52.50
- --------------------------------------------------------------------------------
December 31, 1998        51,429,530        $38.42      2,648,752    $   53.25
================================================================================
</TABLE>

  *  Includes options cancelled as part of the Conoco IPO.

Options exercisable and weighted-average exercise price at the end of the last
three years and the weighted-average fair value of options granted are as
follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                          1998            1997           1996
                                      ------------------------------------------
<S>                                    <C>             <C>            <C>
Fixed Options:
   Number of shares at year-end        46,728,321      40,037,649     43,742,702
   Weighted-avg. price at year-end         $36.29          $26.50         $23.97
   Weighted-avg. fair value of
     options granted during year           $14.30          $12.91         $ 8.95
- --------------------------------------------------------------------------------
Variable Options:
   Number of shares at year-end                --              --             --
   Weighted-avg. price at year-end             --              --             --
   Weighted-avg. fair value of
     options granted during year           $15.79          $13.08             --
================================================================================
</TABLE>

The fair value of options granted is calculated using the Black-Scholes option
pricing model. Assumptions used were as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                            1998                   1997              1996
                    ------------------------------------------------------------
                     Fixed     Variable       Fixed   Variable      Fixed
                    ------------------------------------------------------------
<S>                  <C>         <C>          <C>      <C>          <C>
Dividend yield        2.1%        2.1%         2.2%     2.2%         2.6%
Volatility           19.8%       19.9%        18.8%    18.6%        21.0%
Risk-free
  interest rate       5.5%        5.6%         6.4%     6.4%         5.4%
Expected life
  (years)             5.7         5.8          5.6      5.7          6.0
================================================================================
</TABLE>

The following table summarizes information concerning currently outstanding and
exercisable options:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------
                               Exercise     Exercise      Exercise        Exercise
                                 Price        Price         Price          Price
                                $16.13-      $24.38-       $39.63-        $59.50-
December 31, 1998               $24.19       $36.56        $59.44         $82.09
- -----------------------------------------------------------------------------------
<S>                           <C>          <C>           <C>           <C>
Fixed Options
  Options outstanding          9,882,545    15,920,674    21,105,446    4,520,865
  Weighted-avg. remaining
    contractual life (years)         2.4           5.5           7.9          9.0
  Weighted-avg. price         $    19.76   $     27.48   $     50.76   $    60.16
  Options exercisable          9,882,545    15,920,674    20,813,569      111,533
  Weighted-avg. price         $    19.76   $     27.48   $     50.69   $    72.42
- -----------------------------------------------------------------------------------
Variable Options
  Options outstanding                 --            --     2,505,752      143,000
  Weighted-avg. remaining
    contractual life (years)          --            --           8.1          9.0
  Weighted-avg. price                 --            --   $     52.54     $  65.71
  Options exercisable                 --            --            --           --
  Weighted-avg. price                 --            --            --           --
===================================================================================
</TABLE>

The company applies APB Opinion No. 25, "Accounting for Stock Issued to
Employees," and related interpretations in accounting for its stock option
plans. Accordingly, no compensation expense has been recognized for fixed
options. Statement of Financial Accounting Standards (SFAS) No. 123, "Accounting
for Stock-Based Compensation," was issued in 1995. The company has elected not
to adopt the optional recognition provisions of SFAS No. 123. In addition,
certain majority-owned subsidiaries of the company grant options to their
respective employees under APB Opinion No. 25 and have elected not to adopt SFAS
No. 123. The following table sets forth pro forma information as if the company
and Conoco had adopted these recognition provisions; the effect on reported net
income of applying these recognition provisions to majority-owned subsidiaries
other than Conoco is not material. The pro forma disclosures are not
representative of the effects on net income and earnings per share in future
years.


56                                  Dupont
<PAGE>   18
                         Notes to Financial Statements

                    (Dollars in millions, except per share)

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Pro Forma Net Income and
Earnings per share                 1998        1997        1996
- --------------------------------------------------------------------------------
<S>                               <C>         <C>         <C>
Net Income
  As Reported                     $4,480      $2,405      $3,636
  Pro Forma                       $4,584      $2,206      $3,602
Earnings Per Share - Basic
  As Reported                     $ 3.96      $ 2.12      $ 3.23
  Pro Forma                       $ 4.05      $ 1.94      $ 3.20
Earnings Per Share - Diluted
  As Reported                     $ 3.90      $ 2.08      $ 3.18
  Pro Forma                       $ 3.99      $ 1.91      $ 3.15
================================================================================
</TABLE>

Compensation expense recognized in income for stock-based employee compensation
awards was $174 ($15 excluding Conoco), $65 ($40 excluding Conoco) and $22 ($9
excluding Conoco) for 1998, 1997 and 1996, respectively.

Awards under the company's Variable Compensation Plan may be granted in stock
and/or cash to employees who have contributed most in a general way to the
company's success, consideration being given to ability to succeed to more
important managerial responsibility. Such awards were $182 for 1998, $268 ($223
excluding Conoco) for 1997 and $233 ($195 excluding Conoco) for 1996. Amounts
credited to the Variable Compensation Fund are dependent on company earnings and
are subject to maximum limits as defined by the plan. The amounts credited to
the fund were $188 in 1998, $265 ($221 excluding Conoco) in 1997 and $230 ($189
excluding Conoco) in 1996. Awards made and amounts credited under the Variable
Compensation Plan for 1998 relate solely to employees of continuing operations.
In accordance with the terms of the Variable Compensation Plan and similar plans
of subsidiaries, 1,309,208 shares of common stock are awaiting delivery from
awards for 1998 and prior years.


23.  Investment Activities

The company purchased Merck's 50 percent interest in The DuPont Merck
Pharmaceutical Company on July 1, 1998, for a cash payment of $2,586. As part of
the purchase, the company agreed to indemnify Merck for certain liabilities that
may arise from events that occurred during Merck's tenure as a general partner
(see Note 26). In addition, related costs of $8 were incurred. The company now
operates as DuPont Pharmaceuticals. For accounting purposes, the acquisition has
been treated as a purchase. The preliminary allocation of purchase price is as
follows: cash $69; other current assets $203; noncurrent assets $1,361;
in-process research and development $1,230; and liabilities $269. Noncurrent
assets includes $73 of goodwill, which is being amortized over 20 years.
Excluding the effect of the $1,230 charge for purchased in-process research and
development on 1997's unaudited pro forma results, the unaudited pro forma
effect on net income and earnings per share for 1998 and 1997 is not material.

The company purchased ICI's global polyester films business on January 31, 1998,
for a cash payment of $647; in addition, related costs of $5 were incurred and
liabilities of $110 were assumed, including $54 in employee separation costs and
$6 in other costs pursuant to an exit plan the company began to formulate as of
the acquisition date. For accounting purposes, the acquisition has been treated
as a purchase. The preliminary allocation of purchase price is as follows:
current assets $62; noncurrent assets $650; and in-process research and
development $50. Noncurrent assets includes $76 of goodwill, which is being
amortized over 20 years.

Investment in affiliates in 1997 includes $1,711 for the September 1997 purchase
of a 20 percent interest in Pioneer Hi-Bred International. Pioneer develops,
produces and markets hybrids of corn and varieties of soybeans. For accounting
purposes, the acquisition has been treated as a purchase. Of the $1,711 purchase
price, $903 was allocated to purchased in-process research and development and
the remainder was allocated based on fair values to assets and liabilities of
Pioneer, principally intangible assets (including $206 of goodwill to be
amortized over 40 years), for purposes of determining equity in earnings. The
1997 allocation of purchase price was revised in 1998 with finalization of
purchase accounting.

Protein Technologies International was purchased on December 1, 1997. PTI is a
global supplier of soy proteins and applied technology to the food and paper
processing industries. 22,500,000 shares of DuPont common stock were issued in
this transaction with a fair value of $1,297. In addition, related costs of $4
were incurred. For accounting purposes, the acquisition has been treated as a
purchase. Based on preliminary estimates, the purchase price was allocated as
follows: cash $47; other current assets $158; noncurrent assets $897; in-process
research and



                                    DuPont                                   57
<PAGE>   19
                         Notes to Financial Statements

                    (Dollars in millions, except per share)



development $500; and liabilities $301, including $188 of debt. In 1998, an
additional 70,673 shares of DuPont common stock were issued with a fair value of
$4, and related costs of $1 were incurred. The purchase price allocations were
revised as follows: cash $47; other current assets $179; noncurrent assets
$1,072; in-process research and development $560; deferred tax liability $280;
and other liabilities $272. Noncurrent assets includes $85 of goodwill, which is
being amortized over 25 years.

The company purchased ICI's global polyester resins and intermediates businesses
on December 31, 1997, for a cash payment of $1,240, including $50 held in escrow
pending satisfactory demonstration of intermediates process technology in a new
facility; in addition, related costs of $7 were incurred and liabilities of $230
were assumed. As part of the transaction, the company acquired a 70 percent
interest in an ICI subsidiary that had approximately $225 in long-term
borrowings at December 31, 1997. For accounting purposes, the acquisition has
been treated as a purchase. The preliminary allocation of purchase price was as
follows: current assets $99; noncurrent assets $1,303; in-process research and
development $75; and liabilities $230, including $176 of debt. In 1998, the
purchase price allocations were revised as follows: current assets $89;
noncurrent assets $1,245; in-process research and development $178; and
liabilities $265, including $15 in employee separation costs pursuant to an exit
plan the company began to formulate as of the acquisition date. Noncurrent
assets includes $26 of goodwill, which is being amortized over 20 years.

Note 5 provides information on purchased in-process research and development in
connection with the Pioneer, PTI, ICI and DuPont Merck transactions.

Proceeds from sales of assets in 1998 principally include: (a) $500 from the
sale of substantially all of DuPont's 50 percent interest in CONSOL Energy Inc.;
(b) $279 from the sale of the global hydrogen peroxide business; and (c) $86
from the sale of the printing and publishing businesses.

Proceeds from sales of assets in 1997 principally include: (a) $175 from
collection of a note from The Sterling Group Inc. received in connection with
its purchase of the Diagnostic Imaging business in 1996; (b) $125 from DuPont
Merck for sale of its generic and multisource product lines; and (c) $62 from
the sale of the NEN Life Sciences Products to Genstar Capital LLC.

Proceeds from sales of assets in 1996 principally include $570 from the sales of
Medical Products businesses, and $390 from the formation of the elastomers joint
venture. Assets sold in connection with these sales amounted to $1,163, of which
$644 was for property, plant and equipment, with the remainder being primarily
working capital.

Payments for businesses acquired in 1996 principally relate to the purchase of
commercial floorcovering distribution and installation companies.


24.  Pensions and Other Postretirement Benefits

Statement of Financial Accounting Standards No. 132, "Employers' Disclosures
about Pensions and Other Postretirement Benefits," was adopted by the company in
1998. The standard revises disclosures for pensions and other postretirement
benefits and standardizes them into a combined format.

The company offers various postretirement benefits to its employees. Where
permitted by applicable law, the company reserves the right to change, modify or
discontinue the plans.

Pensions

The company has noncontributory defined benefit plans covering substantially all
U.S. employees. The benefits under these plans are based primarily on years of
service and employees' pay near retirement. The company's funding policy is
consistent with the funding requirements of federal law and regulations.

Pension coverage for employees of the company's non-U.S. consolidated
subsidiaries is provided, to the extent deemed appropriate, through separate
plans. Obligations under such plans are systematically provided for by
depositing funds with trustees, under insurance policies or by book reserves.

Other Postretirement Benefits

The parent company and certain subsidiaries provide medical, dental, and life
insurance benefits to pensioners and survivors. The associated plans are
unfunded and approved claims are paid from company funds.


58                                  DuPont
<PAGE>   20
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




Summarized information on the company's postretirement plans is as follows:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------
                                      Pension Benefits          Other Benefits
                                ---------------------------------------------------
                                     1998         1997         1998        1997
                                ---------------------------------------------------
Change in Benefit Obligation
<S>                             <C>           <C>          <C>          <C>
Benefit obligation at
  beginning of year               $ 17,133     $ 15,505     $  4,590     $  4,486
Service cost                           355          328           61           55
Interest cost                        1,121        1,123          310          334
Plan participants'
  contributions                         17           17           28           24
Actuarial loss                       1,586        1,595          245           34
Foreign currency exchange
  rate changes                          43         (182)          (4)          (2)
Benefits paid                       (1,236)      (1,213)        (330)        (341)
Amendments                               7           --         (167)          --
New Plans                              389           28           32           --
Divestiture                           (144)         (68)          --           --
Benefit obligation at end       ---------------------------------------------------
of year                           $ 19,271     $ 17,133     $  4,765     $  4,590
                                ===================================================
Change in Plan Assets

Fair value of plan assets
  at beginning of year            $ 18,697     $ 16,957     $     --     $     --
Actual return on
  plan assets                        2,411        3,196           --           --
Foreign currency exchange
  rate changes                           9         (112)          --           --
Employer contributions                 189          137          302          317
Plan participants'
  contributions                         17           17           28           24
Benefits paid                       (1,236)      (1,213)        (330)        (341)
Retiree health care
  pension assets transfer             (249)        (232)          --           --
Special termination
  payments                            (159)          --           --           --
New plans                              244           27           --           --
Divestiture                            (94)         (80)          --           --
Fair value of plan              ---------------------------------------------------
  assets at end of year           $ 19,829     $ 18,697     $     --     $     --
                                ===================================================
Funded Status                     $    558     $  1,564     $ (4,765)    $ (4,590)
Unrecognized prior
  service cost                         572          625         (752)        (650)
Unrecognized actuarial
  (gain) loss                          201         (439)        (340)        (625)
Unrecognized transition
  asset                               (622)        (776)          --           --
                                ---------------------------------------------------
Net amount recognized             $    709     $    974     $ (5,857)    $ (5,865)
                                ===================================================
Amounts recognized in the
statement of financial
position consist of:

Prepaid (accrued) benefit cost    $    798     $  1,055     $ (5,857)    $ (5,865)
Accrued benefit liability             (448)        (327)          --           --
Intangible asset                        61           51           --           --
Accumulated other
  comprehensive income                 298          195           --           --
                                ---------------------------------------------------
  Net amount recognized           $    709     $    974     $ (5,857)    $ (5,865)
===================================================================================
</TABLE>

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------
Weighted-average                      Pension Benefits          Other Benefits
assumptions as of                 -------------------------------------------------
December 31                          1998         1997         1998        1997
                                  -------------------------------------------------
<S>                                   <C>         <C>         <C>         <C>
Discount rate                           6.5%        7.0%        6.5%        7.0%
Expected return on plan assets          9.0%        9.0%         --          --
Rate of compensation increase           5.0%        5.0%        5.0%        5.0%
===================================================================================
</TABLE>
The above assumptions are for U.S. plans only. For non-U.S. plans, no one of
which was material, assumptions reflect economic assumptions applicable to each
country.

The assumed health care trend rates used in determining other benefits at
December 31, 1998, are 7.5 percent decreasing to 4 percent over five years. At
December 31, 1997, such rates were 8 percent decreasing to 5 percent over eight
years.

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------
Components of                 Pension Benefits                    Other Benefits
Net Periodic       -----------------------------------------------------------------------
Benefit Cost           1998        1997        1996        1998        1997        1996
                   -----------------------------------------------------------------------
<S>                <C>         <C>         <C>         <C>         <C>         <C>
Service cost         $   355     $   328     $   327     $    61     $    55     $    62
Interest cost          1,121       1,123       1,097         310         334         316
Expected return
  on plan assets      (1,581)     (1,417)     (1,369)         --          --          --
Amortization of
transition asset        (150)       (150)       (159)         --          --          --
Amortization of
  unrecognized
  (gain) loss             56          35          52         (25)        (21)        (22)
Amortization of
  prior service
  cost                    53          54          38         (65)        (65)        (75)
Curtailment/
  settlement loss          6          --          --          --          --          --
Net periodic       -----------------------------------------------------------------------
  benefit cost
  (credit)           $  (140)    $   (27)    $   (14)    $   281     $   303     $   281
==========================================================================================
</TABLE>


                                    DuPont                                   59
<PAGE>   21
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




The projected benefit obligation, accumulated benefit obligation, and fair value
of plan assets for the pension plan with accumulated benefit obligations in
excess of plan assets were $2,364, $1,968, and $990, respectively, as of
December 31, 1998, and $1,307, $974, and $167, respectively, as of December 31,
1997. The special termination benefit of $159 was provided to U.S. employees
terminated under company-wide productivity improvement initiatives. (These
initiatives are described in Note 6.) U.S. pension assets consist principally of
common stocks, including 9,353,570 shares of DuPont at December 31, 1998 and
U.S. government obligations.

Excluded from Note 24 are the Conoco projected benefit obligation and fair value
of plan assets of $1,737 and $1,316, respectively, as of December 31, 1998, and
$1,404 and $1,196, respectively, as of December 31, 1997.

Assumed health care cost trend rates have a significant effect on the amount
reported for the health care plan. A one-percentage-point change in assumed
health care cost trend rates would have the following effects:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                         1-Percentage         1-Percentage
                                        Point Increase       Point Decrease
                                   ---------------------------------------------
<S>                                <C>                     <C>
Effect on total of service and
  interest cost components                  $ 44                  $ (35)

Effect on postretirement
  benefit obligation                        $444                  $(366)
================================================================================
</TABLE>


25.  Derivatives and Other Hedging Instruments

The company enters into contractual arrangements (derivatives) in the ordinary
course of business to hedge its exposure to currency, interest rate and
commodity price risks. The company has established an overlying Financial Risk
Management Framework for risk management and derivative activities. The
framework sets forth senior management's financial risk management philosophy
and objectives through a Corporate Financial Risk Management Policy. In
addition, it establishes oversight committees and risk management guidelines
that authorize the use of specific derivative instruments and further
establishes procedures for control and valuation, counterparty credit approval,
and routine monitoring and reporting. The counterparties to these contractual
arrangements are major financial institutions. The company is exposed to credit
loss in the event of nonperformance by these counterparties. The company manages
this exposure to credit loss through the aforementioned credit approvals, limits
and monitoring procedures and, to the extent possible, by restricting the period
over which unpaid balances are allowed to accumulate. The company does not
anticipate nonperformance by counterparties to these contracts, and no material
loss would be expected from such nonperformance. Market and counterparty credit
risks associated with these instruments are regularly reported to management.
The company's accounting policies with respect to these financial instrument
transactions are set forth in Note 1.


Currency Risk

The company routinely uses forward exchange contracts to hedge its net
exposures, by currency, related to monetary assets and liabilities of its
operations that are denominated in currencies other than the designated
functional currency. The primary business objective of this hedging program is
to maintain an approximately balanced position in foreign currencies so that
exchange gains and losses resulting from exchange rate changes, net of related
tax effects, are minimized.

In addition, the company from time to time will enter into forward exchange
contracts to establish with certainty the functional currency amount of future
firm commitments denominated in another currency. Decisions regarding whether or
not to hedge a given commitment are made on a case-by-case basis, taking into
consideration the amount and duration of the exposure, market volatility and
economic trends. At December 31, 1998, the company had no open forward exchange
contracts designated as hedges of firm foreign currency commitments. Forward
exchange contracts are also used from time to time to manage near-term foreign
currency cash requirements and, from time to time, to place foreign currency
deposits and marketable securities investments into currencies offering
favorable returns. Net cash inflow (outflow) from settlement of forward exchange
contracts was $(31), $146 and $(192) for the years 1998, 1997 and 1996,
respectively.


60                                  DuPont
<PAGE>   22
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




In December 1998 the company entered into forward exchange contracts to purchase
3.1 billion German marks for about $1,900 in conjunction with the signing of a
definitive agreement to purchase the performance coatings business of Hoechst AG
for 3.1 billion German marks. The business purpose of these contracts was to
lock in the U.S. dollar functional currency cost of this acquisition and thereby
prevent adverse movements in the dollar/mark exchange rate from causing the net
U.S. dollar cash purchase price to exceed the negotiated fair value of the
business. The use of hedge accounting for these contracts is precluded by
accounting guidance. Changes in fair value of these contracts are included in
income in the period the change occurs and the U.S. dollar purchase price for
the acquired business will be measured using the dollar/mark exchange rate on
the date of payment. At December 31, 1998, the change in fair value of these
contracts resulted in a loss of $20.


Interest Rate Risk

The company uses a combination of financial instruments, including interest rate
swaps, interest and principal currency swaps and structured medium-term
financings, as part of its program to manage the fixed and floating interest
rate mix of the total debt portfolio and related overall cost of borrowing.

Interest rate swaps involve the exchange of fixed for floating rate interest
payments that are fully integrated with underlying fixed-rate bonds or notes to
effectively convert fixed rate debt into floating rate debt based on LIBOR or
commercial paper rates. Interest rate swaps also involve the exchange of
floating for fixed rate interest payments that are fully integrated with
commercial paper or other floating rate borrowings to effectively convert
floating rate debt into fixed rate debt. Both types of interest rate swaps are
denominated in U.S. dollars. Interest rate swaps allow the company to maintain a
target range of floating rate debt.

Under interest and principal currency swaps, the company receives predetermined
foreign currency-denominated payments corresponding, both as to timing and
amount, to the fixed or floating interest rate and fixed principal amount to be
paid by the company under concurrently issued foreign currency-denominated
bonds. In return, the company pays a U.S. dollar-denominated fixed or floating
interest rate and a U.S. dollar-denominated fixed principal amount to the
counterparty, thereby effectively converting the foreign currency-denominated
bonds into U.S. dollar-denominated obligations for both interest and principal.
Interest and principal currency swaps allow the company to be fully hedged
against fluctuations in currency exchange rates and foreign interest rates and
to achieve U.S. dollar fixed or floating interest rate payments below the market
interest rate, at the date of issuance, for borrowings of comparable maturity.

An interest and principal currency swap was outstanding at December 31, 1998 and
1997, that effectively converted a 150 million Swiss franc borrowing with a 6.25
percent Swiss franc fixed interest rate and a maturity of 2000 to a U.S. dollar
fixed principal amount of $103 with a 6.9 percent U.S. dollar fixed interest
rate. The fair value of this swap at December 31, 1998 and 1997, was not
material.

Structured medium-term financings consist of: (a) a structured medium-term note
with interest and/or principal payments (denominated in either U.S. dollars or
foreign currencies) determined using a specified calculation incorporating
changes in currency exchange rates or other financial indexes, and (b) a
concurrently executed structured medium-term swap that, for any and all
calculations of the note's interest and/or principal payments over the term of
the note, provides a fully hedged transaction such that the note is effectively
converted to a U.S. dollar-denominated fixed or floating interest rate with a
U.S. dollar-denominated fixed principal amount. Structured medium-term swaps
allow the company to be fully hedged against fluctuations in exchange rates and
interest rates and to achieve U.S. dollar fixed or floating interest rate
payments below the market interest rate, at the date of issuance, for borrowings
of comparable maturity.

The face amount of structured medium-term financings outstanding was $50 at
December 31, 1998 and 1997. The weighted-average interest rate and
weighted-average maturity was 5.1 percent and 5.6 percent, and 6.8 years and 7.8
years, at December 31, 1998 and 1997, respectively. The fair value of the
structured medium-term swap associated with these financings at December 31,
1998 and 1997, was not material.

It is the company's policy that foreign currency bonds and structured
medium-term notes will not be issued unless a hedge of the market risks inherent
in such borrowings is executed simultaneously with a management-approved, highly
creditworthy counterparty to provide a fully hedged transaction.


                                    DuPont                                   61
<PAGE>   23
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




Interest rate financial instruments did not have a material effect on the
company's overall cost of borrowing at December 31, 1998 and 1997.

See also Notes 17 and 19 for additional descriptions of interest rate financial
instruments.


Summary of Outstanding Derivative Financial Instruments

Set forth below is a summary of the notional amounts, estimated fair values and
carrying amounts of outstanding financial instruments at December 31, 1998 and
1997.

Notional amounts represent the face amount of the contractual arrangements and
are not a measure of market or credit exposure. Estimated fair value of forward
exchange contracts is based on market prices for contracts of comparable time to
maturity. Carrying amounts represent the receivable (payable) recorded in the
Consolidated Balance Sheet. See also Notes 10, 11, 15, 16, 17 and 19 for fair
values and carrying amounts of other financial instruments.


Notional Amount, Estimated Fair Value and Carrying Amount of Outstanding
Derivative Financial Instruments

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                               Notional      Estimated        Carrying
Type of Instrument               Amount     Fair Value          Amount
- --------------------------------------------------------------------------------
Forward Exchange Contracts
<S>                           <C>            <C>             <C>
  December 31, 1998           $  11,389      $  (43)         $  (41)
               1997               8,621          (3)             16
================================================================================
</TABLE>

Estimated fair values shown above only represent the value of the hedge
component of these transactions, and thus are not indicative of the fair value
of the company's overall hedged position. The estimated fair value of the
company's total debt portfolio, based on quoted market prices for the same or
similar issues or on current rates offered to the company for debt of the same
remaining maturities, was $11,600 and $12,700 at December 31, 1998 and 1997,
respectively. The decrease in fair value in 1998 was primarily due to lower
borrowing levels.


Commodity Price Risk

The company enters into exchange-traded and over-the-counter derivative
commodity instruments to hedge its exposure to price fluctuations on certain raw
material purchases. The fair value of outstanding derivative commodity
instruments at December 31, 1998 and 1997, was not material.


26.  Commitments and Contingent Liabilities

The company uses various leased facilities and equipment in its operations.
Future minimum lease payments under noncancelable operating leases are $148,
$111, $84, $69 and $45 for the years 1999, 2000, 2001, 2002 and 2003,
respectively, and $260 for subsequent years, and are not reduced by
noncancelable minimum sublease rentals due in the future in the amount of $18.
Rental expense under operating leases was $214 in 1998, $250 in 1997 and $240 in
1996.

In June 1997, DuPont formed alliances with Computer Sciences Corporation (CSC)
and Andersen Consulting. CSC operates a majority of DuPont's global information
systems and technology infrastructure and provides selected applications and
software services. Andersen Consulting provides information systems solutions
designed to enhance DuPont's manufacturing, marketing, distribution and customer
service. The total dollar value of the contracts is in excess of $4,000 over 10
years. Minimum payments due under the contracts are: $253, $203, $168, $161 and
$154 for the years 1999, 2000, 2001, 2002 and 2003, respectively, and a total of
$502 thereafter.

The company has various purchase commitments for materials, supplies and items
of permanent investment incident to the ordinary conduct of business. In the
aggregate, such commitments are not at prices in excess of current market.

The company is subject to various lawsuits and claims with respect to such
matters as product liabilities, governmental regulations and other actions
arising out of the normal course of business. While the effect on future
financial results is not subject to reasonable estimation because considerable
uncertainty exists, in the opinion of company counsel, the ultimate liabilities
resulting from such lawsuits and claims will not materially affect the
consolidated financial position of the company.


62                                  DuPont
<PAGE>   24
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




During 1991 the company initiated a stop-sale and recall of Benlate(R) 50 DF
fungicide. About 140 of the more than 750 cases filed against the company in
connection with the recall remain, the rest having been disposed of by trial,
dismissal or settlement. In the fourth quarter of 1995, DuPont and the other
major defendants in litigation concerning allegedly defective plumbing systems
made with polybutylene pipe and acetal fittings settled two of several national
class actions. The company's liability in the settled actions is limited to 10
percent of the cost of repairing plumbing systems up to a total company payout
of $120. The related liability for each of these matters included in the
Consolidated Balance Sheet is not reduced by the amounts of any expected
insurance recoveries. Adverse changes in estimates for such costs could result
in additional future charges.

The company is also subject to contingencies pursuant to environmental laws and
regulations that in the future may require the company to take further action to
correct the effects on the environment of prior disposal practices or releases
of chemical or petroleum substances by the company or other parties. The company
has accrued for certain environmental remediation activities consistent with the
policy set forth in Note 1. At December 31, 1998, such accrual amounted to $462
and, in management's opinion, was appropriate based on existing facts and
circumstances. Under adverse changes in circumstances, potential liability may
exceed amounts accrued. In the event that future remediation expenditures are in
excess of amounts accrued, management does not anticipate that they will have a
material adverse effect on the consolidated financial position of the company.

The company has indirectly guaranteed various debt obligations under agreements
with certain affiliated and other companies to provide specified minimum
revenues from shipments or purchases of products. At December 31, 1998, these
indirect guarantees totaled $15, and the company had directly guaranteed $502 of
the obligations of certain affiliated companies and others. No material loss is
anticipated by reason of such agreements and guarantees.

As part of the company's purchase of Merck's 50 percent interest in The DuPont
Merck Pharmaceutical Company, the company agreed to indemnify Merck for certain
liabilities that may arise from events that occurred during Merck's tenure as
general partner. As this contingency is resolved and if additional consideration
is paid, the amount of such payments will be recorded as additional cost of the
acquired business and will increase the amount of goodwill recorded for this
acquisition. Amounts paid in 1998 under the indemnity were not material.

In addition, the company has historically guaranteed certain obligations and
liabilities of Conoco Inc., its subsidiaries and affiliates. The company has
guaranteed $808, plus interest, of the financial obligations of Conoco as well
as certain non-financial performance obligations. Conoco has indemnified the
company for any liabilities the company may incur pursuant to these guarantees.
The Restructuring, Transfer and Separation Agreement between DuPont and Conoco
requires Conoco to use its best efforts to have Conoco, or any of its
subsidiaries, substitute for DuPont as guarantor.


                                    DuPont                                   63
<PAGE>   25
                         Notes to Financial Statements

                    (Dollars in millions, except per share)



27.  Geographic Information

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------
                                         1998                  1997                  1996
                               --------------------------------------------------------------------
                                    Net        Net        Net       Net         Net        Net
                                   Sales*   Property     Sales*   Property     Sales*   Property
                               --------------------------------------------------------------------
<S>                             <C>        <C>        <C>        <C>        <C>        <C>
North America
  United States                   $13,075    $ 8,454    $12,802    $ 7,469    $12,472    $ 6,690
  Canada                              881        459        867        559        808        526
  Mexico                              421        117        402        118        343        103
  Other                                93        135         65         74         66         74
                               --------------------------------------------------------------------
          Total                    14,470      9,165     14,136      8,220     13,689      7,393

Europe, Middle East and Africa
  Germany                           1,450        388      1,300        384      1,214        517
  United Kingdom                      988      1,078        925        759        968        467
  France                              904        181        863        174        962        167
  Italy                               902          5        818          5        832          6
  Other                             2,108      1,188      2,029      1,102      2,091      1,023
                               --------------------------------------------------------------------
          Total                     6,352      2,840      5,935      2,424      6,067      2,180

Asia Pacific
  Japan                               820        159        914         77      1,020        101
  Taiwan                              591        707        396        688        356        219
  China                               398        208        373        205        348        161
  Singapore                            86        635         85        584         63        561
  Other                               947        244      1,157        212      1,138        190
                               --------------------------------------------------------------------
          Total                     2,842      1,953      2,925      1,766      2,925      1,232

South America
  Brazil                              659         83        642        106        560        101
  Other                               444         90        451         85        403         53
                               --------------------------------------------------------------------
          Total                     1,103        173      1,093        191        963        154
                               --------------------------------------------------------------------
Total                             $24,767    $14,131    $24,089    $12,601    $23,644    $10,959
===================================================================================================
</TABLE>

*Sales are attributed to countries based on location of customer.


28.  Industry Segment Information

Statement of Financial Accounting Standards (SFAS) No. 131, "Disclosures about
Segments of an Enterprise and Related Information," was adopted by the company
beginning with this Annual Report. This standard requires disclosure of segment
information on the same basis used internally for evaluating segment performance
and deciding how to allocate resources to segments. The company's strategic
business units (operating segments) are organized by product line. For purposes
of SFAS No. 131, these have been aggregated into eight reportable segments
including Agriculture & Nutrition, Nylon Enterprise, Performance Coatings &
Polymers, Pharmaceuticals, Pigments & Chemicals, Polyester Enterprise, Specialty
Fibers and Specialty Polymers. The company's ongoing photomasks, safety
resources, and global services businesses, and the divested businesses of
printing and publishing, medical products and coal are included in Other. Major
products by segment include: Agriculture & Nutrition (herbicides, fungicides,
insecticides, soy protein and value-enhanced grains); Nylon Enterprise (flooring
systems, textiles, industrial fibers and intermediates); Performance Coatings &
Polymers (automotive finishes, engineering polymers and elastomers);
Pharmaceuticals (prescription pharmaceuticals and radiopharmaceuticals);
Pigments & Chemicals (white pigment and mineral products, specialty chemicals
and fluorochemicals); Polyester Enterprise (Dacron(R) polyester,
high-performance films and resins and intermediates); Specialty Fibers (Lycra(R)
brand elastane, nonwovens and aramids); and Specialty Polymers (photopolymers
and electronic materials, packaging and industrial polymers, Corian(R) surfaces
and fluoropolymers). The company operates globally in substantially all of its
product lines. The company's sales are not materially dependent on a single
customer or small group of customers. The Performance



64                                  DuPont
<PAGE>   26
                         Notes to Financial Statements

                    (Dollars in millions, except per share)




Coatings & Polymers and Nylon Enterprise segments have several large customers
in their respective industries that are important to these segments' operating
results.

In general, the accounting policies of the segments are the same as those
described in the Summary of Significant Accounting Policies. Exceptions are
noted as follows and are shown in the reconciliations below. Sales include pro
rata equity affiliate sales and intersegment transfers. After-tax operating
income does not include corporate expenses, interest and exchange gains
(losses).

Segment net assets measures net working capital, net permanent investment and
other noncurrent operating assets and liabilities of the segment. Affiliate net
assets (pro rata share) excludes borrowings and other long-term liabilities.
Depreciation and amortization includes depreciation on research and development
facilities and amortization of intangible assets, excluding write-down of assets
discussed in Note 6. Expenditures for long-lived assets excludes investments in
affiliates and includes payments for long-lived assets as part of business
acquisitions. See Note 23 for discussion of strategic acquisitions in the
segments.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
                                     Agriculture                      Performance                         Pigments
                                          &              Nylon         Coatings &        Pharma-             &
                                      Nutrition        Enterprise       Polymers        ceuticals        Chemicals
                                  ----------------------------------------------------------------------------------
<S>                                 <C>              <C>             <C>             <C>               <C>
1998
Total Segment Sales                    $  3,156         $  4,594        $  4,607        $  1,109         $  3,659
Intersegment Transfers                       --               39              42              --              228

After-Tax Operating Income 2                257              244             508            (668)             577
Depreciation and Amortization               133              236             149              60              232
Equity in Earnings of Affiliates             10               35              16              77               (3)
Provision for Income Taxes                   25              140             264            (317)             303

Segment Net Assets                        4,069            3,082           2,214           1,843            1,734
Affiliate Net Assets                      1,169              551             281              23               62
Expenditures for Long-Lived Assets          214              493             229             655              189
====================================================================================================================
1997
Total Segment Sales                    $  2,513         $  4,582        $  4,676        $    753         $  3,812
Intersegment Transfers                       --               26              51              --              228

After-Tax Operating Income 3             (1,017)             372             519             234              513
Depreciation and Amortization                73              231             157              --              241
Equity in Earnings of Affiliates           (913)              42              67             232               --
Provision for Income Taxes                  (16)             177             274             142              238

Segment Net Assets                        3,231            2,928           2,043             404            1,885
Affiliate Net Assets                        882              507             262             437               68
Expenditures for Long-Lived Assets          499              490             258              --              203
=====================================================================================================================
1996
Total Segment Sales                    $  2,443         $  4,186        $  4,573        $    721         $  3,734
Intersegment Transfers                       --               29              47              --              230

After-Tax Operating Income 4                351              334             502             305              493
Depreciation and Amortization                70              244             198              --              253
Equity in Earnings of Affiliates              6               26              51             302               --
Provision for Income Taxes                   56              172             282             186              231

Segment Net Assets                        1,405            2,325           1,879             439            1,929
Affiliate Net Assets                         28              283             220             479               70
Expenditures for Long-Lived Assets           88              300             219              --              196
====================================================================================================================

<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
                                       Polyester        Specialty       Specialty
                                      Enterprise         Fibers         Polymers          Other           Total 1
                                  ----------------------------------------------------------------------------------
<S>                                 <C>              <C>             <C>             <C>               <C>
1998
Total Segment Sales                    $  2,797         $  3,296        $  4,093        $    445         $ 27,756
Intersegment Transfers                      175               86             155               4              729

After-Tax Operating Income 2               (228)             659             598             183            2,130
Depreciation and Amortization               419              230             169              64            1,692
Equity in Earnings of Affiliates             (1)              25              12              81              252
Provision for Income Taxes                 (100)             331             318              89            1,053

Segment Net Assets                        3,142            2,574           2,183             260           21,101
Affiliate Net Assets                        174              134             237              --            2,631
Expenditures for Long-Lived Assets          706              361             267             134            3,248
====================================================================================================================
1997
Total Segment Sales                    $  2,215         $  3,320        $  4,094        $  1,022         $ 26,987
Intersegment Transfers                      169               70             192              18              754

After-Tax Operating Income 3                124              708             577            (225)           1,805
Depreciation and Amortization               126              240             178              64            1,310
Equity in Earnings of Affiliates              3               23              21              67             (458)
Provision for Income Taxes                   77              319             289            (178)           1,322

Segment Net Assets                        3,156            2,332           2,011             375           18,365
Affiliate Net Assets                        158              127             199             249            2,889
Expenditures for Long-Lived Assets        1,131              285             320             136            3,322
====================================================================================================================
1996
Total Segment Sales                    $  2,337         $  3,095        $  3,835        $  1,542         $ 26,466
Intersegment Transfers                      275               32             129              76              818

After-Tax Operating Income 4                161              624             496             (24)           3,242
Depreciation and Amortization               147              247             179             101            1,439
Equity in Earnings of Affiliates             11               20              25              36              477
Provision for Income Taxes                   76              287             250             (63)           1,477

Segment Net Assets                        1,212            2,232           1,865           1,123           14,409
Affiliate Net Assets                        144              116             185             436            1,961
Expenditures for Long-Lived Assets          167              326             247              67            1,610
===============================================================================================================
</TABLE>
                                    DuPont                                   65
<PAGE>   27
                         Notes to Financial Statements

                    (Dollars in millions, except per share)


1    A reconciliation of the totals reported for the operating segments to the
     applicable line items on the consolidated financial statements is as
     follows:

Segment Sales to Total Sales

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                    1998           1997           1996
                               -------------------------------------------------
<S>                              <C>            <C>            <C>
Total Segment Sales              $ 27,756       $ 26,987       $ 26,466
Elimination of Intersegment
  Transactions                       (729)          (754)          (818)
Elimination of Equity
  Affiliate Sales                  (2,260)        (2,204)        (2,045)
Miscellaneous                          --             60             41
                               -------------------------------------------------
    Total Sales                  $ 24,767       $ 24,089       $ 23,644
================================================================================
</TABLE>

After-Tax Operating Income to Income from Continuing Operations

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                    1998           1997           1996
                               -------------------------------------------------
<S>                              <C>            <C>            <C>
Total Segment ATOI               $  2,130       $  1,805       $  3,242
Interest and Exchange
  Gains (Losses)                     (292)          (226)          (182)
Corporate Expenses                   (190)          (147)          (129)
                               -------------------------------------------------
  Income from Continuing
    Operations                   $  1,648       $  1,432       $  2,931
================================================================================
</TABLE>


Segment Net Assets to Total Assets

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                    1998           1997           1996
                               -------------------------------------------------
<S>                              <C>            <C>            <C>
Total Segment Net Assets         $ 21,101       $ 18,365       $ 14,409
Corporate Assets                    4,768          5,296          5,990
Liabilities included
  in Net Assets                     4,250          4,630          4,092
Net Assets of
  Discontinued Operations           8,417          8,398          7,851
                               -------------------------------------------------
        Total Assets             $ 38,536       $ 36,689       $ 32,342
================================================================================
</TABLE>


Other Items

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                       Segment                    Consolidated
                                       Totals      Adjustments      Totals
                               -------------------------------------------------
<S>                                  <C>           <C>            <C>
1998
Depreciation and Amortization         $ 1,692       $  (240)       $ 1,452
Equity in Earnings of Affiliates          252            26            278
Provision for Income Taxes              1,053          (112)           941
Affiliate Net Assets                    2,631          (835)         1,796
Expenditures for Long-Lived
  Assets                                3,248           135          3,383
1997
Depreciation and Amortization         $ 1,310       $    51        $ 1,361
Equity in Earnings of Affiliates         (458)        1,101*           643
Provision for Income Taxes              1,322            32          1,354
Affiliate Net Assets                    2,889          (517)         2,372
Expenditures for Long-Lived
  Assets                                3,322           118          3,440
1996
Depreciation and Amortization         $ 1,439       $    87        $ 1,526
Equity in Earnings of Affiliates          477           217            694
Provision for Income Taxes              1,477           (61)         1,416
Affiliate Net Assets                    1,961          (389)         1,572
Expenditures for Long-Lived
  Assets                                1,610            63          1,673
================================================================================
</TABLE>

*    Includes a charge of $903 for Pioneer in-process research and development
     reported in Note 5.

2 Includes the following (charges) benefits:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
<S>                                                              <C>
Agriculture & Nutrition a                                        $   (73)
Nylon Enterprise b                                                  (162)
Performance Coatings & Polymers b                                    (17)
Pharmaceuticals c                                                   (853)
Pigments & Chemicals b                                                (4)
Polyester Enterprise d                                              (221)
Specialty Fibers b                                                    (3)
Specialty Polymers b                                                 (10)
Other e                                                               78
                                                                  -------
                                                                 $(1,265)
================================================================================
</TABLE>

a    Includes a $60 charge to adjust the preliminary allocation of purchased
     in-process research and development for PTI and a $13 charge related to
     productivity improvement initiatives.

b    Includes charges associated with productivity improvement initiatives.

c    Includes a $799 charge for purchased in-process research and development
     associated with the purchase of Merck's 50 percent interest in The DuPont
     Merck Pharmaceutical Company and a $54 impairment write-down to fair value
     of certain Pharmaceuticals assets.

d    Includes a $123 charge for adjustments to the preliminary allocation of
     purchased in-process research and development for the purchase of the ICI
     polyester businesses and a $98 charge associated with productivity
     improvement initiatives.

e    Includes a $121 gain on the sale of CONSOL Energy Inc. and a $43 charge
     related to productivity improvement initiatives.

3     Includes the following (charges) benefits:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
<S>                                                              <C>
Agriculture & Nutrition a                                        $(1,465)
Pharmaceuticals b                                                     72
Polyester Enterprise c                                               (63)
Other d                                                             (220)
                                                                  -------
                                                                 $(1,676)
================================================================================
</TABLE>

a    Includes charges of $1,403 for acquired in-process research and development
     relating to the Pioneer transaction ($903) and PTI transaction ($500) and
     $62 associated with the Benlate(R) 50 DF fungicide recall.

b    Includes a benefit of $72 from the gain on the sale by DuPont Merck of its
     generic and multisource product lines.

c    Includes a charge of $63 for acquired in-process research and development
     relating to the ICI polyester resins and intermediates transaction.

d    Includes a charge of $220 associated with the divestiture of certain
     printing and publishing businesses.
<PAGE>   28
4 Includes the following (charges) benefits:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
<S>                                                                  <C>
Agriculture & Nutrition a                                            $(110)
Nylon Enterprise b                                                     (20)
Performance Coatings & Polymers c                                       55
Pigments & Chemicals b                                                 (14)
Polyester Enterprise b                                                 (16)
Other d                                                                 45
                                                                      -----
                                                                     $ (60)
================================================================================
</TABLE>

a    Includes charge associated with the Benlate(R) 50 DF fungicide recall.

b    Includes charges associated principally with employee separation costs in
     the United States.

c    Includes benefit associated with formation of the DuPont Dow elastomers
     joint venture.

d    Includes gains of $41 from the sale of certain medical products businesses
     and $33 related to sale of stock received in connection with the previously
     sold connector systems business, and a charge of $29, principally employee
     separation costs outside the United States, associated with the printing
     and publishing business.

See segment discussions on pages 16-23 for a description of each industry
segment. Products are transferred between segments on a basis intended to
reflect as nearly as practicable the "market value" of the products.

29. Subsequent Event

In February 1999 the company acquired Herberts, the leading supplier of
automotive coatings in Europe, from Hoechst for about $1,900. This business will
become part of DuPont's Performance Coatings & Polymers segment. Herberts
operates 37 manufacturing facilities worldwide and currently employs
approximately 9,000 employees. For the year-ended December 31, 1998, Herberts
had sales of approximately $1,900. The acquisition will be accounted for as a
purchase in 1999.

                                    DuPont                                   67
<PAGE>   29
                      Quarterly Financial Data (Unaudited)

                    (Dollars in millions, except per share)

<TABLE>
<CAPTION>

Quarter Ended                                           March 31         June 30      September 30     December 31
- ------------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>             <C>           <C>              <C>
1998
Sales                                                   $  6,194        $  6,432        $  6,042         $  6,099
Cost of Goods Sold and Other Expenses 1                    5,302           5,272           6,874            5,167
Income (Loss) from Continuing Operations                     637 2           794 3          (564) 4           781 5
Income from Discontinued Operations                          269             165             160            2,439
Net Income                                                   906             959            (404) 6         3,220
Basic Earnings Per Share of Common Stock 7
  Income (Loss) from Continuing Operations                   .56             .70            (.50)             .69
  Income from Discontinued Operations                        .24             .15             .14             2.17
  Net Income                                                 .80             .85            (.36) 6          2.86
Diluted Earnings Per Share of Common Stock 7
  Income (Loss) from Continuing Operations                   .55             .69            (.50)             .68
  Income from Discontinued Operations                        .24             .14             .14             2.14
  Net Income                                                 .79             .83            (.36) 6          2.82
Dividends Per Share of Common Stock                         .315             .35             .35              .35
Market Price of Common Stock 8
  High                                                        70 7/16         84 7/16         79 1/2           66 1/2
  Low                                                         52 5/8          67 1/8          52 1/4           51 11/16
==========================================================================================================================
1997
Sales                                                   $  5,851        $  6,541        $  5,794         $  5,903
Cost of Goods Sold and Other Expenses 1                    4,854           5,260           6,038            5,724
Income (Loss) from Continuing Operations                     710             924            (273) 9            71 10
Income from Discontinued Operations                          310             216             256              191
Net Income                                                 1,020           1,140             (17)             262
Basic Earnings Per Share of Common Stock 7
  Income (Loss) from Continuing Operations                   .63             .82            (.24)             .06
  Income from Discontinued Operations                        .27             .19             .22              .17
  Net Income                                                 .90            1.01            (.02)             .23
Diluted Earnings Per Share of Common Stock 7
  Income (Loss) from Continuing Operations                   .62             .80            (.24)             .06
  Income from Discontinued Operations                        .27             .19             .22              .17
  Net Income                                                 .89             .99            (.02)             .23
Dividends Per Share of Common Stock                         .285            .315            .315             .315
Market Price of Common Stock 8
  High                                                        57 5/8          62 7/8          69 3/4           64 15/16
  Low                                                         46 3/8          49 3/4          60 11/16         50 3/16
==========================================================================================================================
</TABLE>

1    Excludes interest expense and provision for income taxes.

2    Includes a net charge of $145 ($.13 per share-diluted) reflecting: a charge
     of $85 for the modernization program for global nylon operations; and a
     charge of $60 to revise a prior estimate for the 1997 write-off of acquired
     in-process research and development relating to the PTI transaction.

3    Includes a net charge of $45 ($.04 per share-diluted) reflecting a charge
     principally for the modernization program for global nylon operations.

4    Includes a net charge of $1,174 ($1.03 per share-diluted) reflecting: a
     charge of $954 associated with acquired in-process research and development
     relating to the DuPont Merck acquisition ($845) and a revision to the 1997
     ICI polyester write-off ($109); a charge of $256 related to productivity
     improvement initiatives involving employee separation costs and asset
     write-downs; a benefit of $36 related to the sale of hydrogen peroxide
     assets.

5    Includes a net benefit of $99 ($.08 per share-diluted) reflecting: a gain
     of $121 on the sale of substantially all of the company's remaining
     interest in CONSOL Energy Inc.; a charge of $54 associated with the
     impairment write-down to fair value of certain pharmaceutical assets; and a
     net benefit of $32 to revise prior estimates for the write-off of acquired
     in-process research and development relating to the DuPont Merck
     acquisition ($46 benefit) and the ICI polyester purchase ($14 charge).

6    Before effect of extraordinary item.

7    Earnings per share for the year may not equal to the sum of quarterly
     earnings per share due to changes in average share calculations.

8    As reported on the New York Stock Exchange, Inc. Composite Transactions
     Tape.

9    Includes a net charge of $998 ($.87 per share - diluted) reflecting: a
     charge of $850 associated with acquired in-process research and development
     for the Pioneer transaction; a charge of $220 associated with the planned
     divestiture of certain printing and publishing businesses; and a gain of
     $72 from the sale by DuPont Merck of its generic and multisource product
     lines.

10   Includes a net charge of $678 ($.59 per share - diluted) reflecting: a
     charge of $616 associated with acquired in-process research and development
     relating to the PTI transaction ($500), the Pioneer transaction ($53), and
     the ICI polyester intermediates and resins transaction ($63); and a charge
     of $62 associated with the Benlate(R) 50 DF fungicide recall.

68                                   DuPont
<PAGE>   30
                    Five-Year Financial Review 1 (Unaudited)

                    (Dollars in millions, except per share)

<TABLE>
<CAPTION>


- ------------------------------------------------------------------------------------------------------------------------------------

                                                    1998            1997            1996             1995              1994
                                              --------------------------------------------------------------------------------------

<S>                                               <C>             <C>             <C>              <C>              <C>
Summary of Operations
Sales                                             $ 24,767        $ 24,089        $ 23,644         $ 24,500         $ 22,518
Income from Continuing Operations Before
  Income Taxes and Minority Interests             $  2,613        $  2,829        $  4,387         $  4,319         $  3,384
Provision for Income Taxes                        $    941        $  1,354        $  1,416         $  1,432         $  1,164
Income from Continuing Operations                 $  1,648        $  1,432        $  2,931         $  2,858         $  2,205
Income from Discontinued Operations               $  3,033        $    973        $    705         $    435         $    522
Net Income                                        $  4,681 2      $  2,405        $  3,636         $  3,293         $  2,727
                                              --------------------------------------------------------------------------------------

Basic Earnings Per Share of Common Stock
  Income from Continuing Operations               $   1.45        $   1.26        $   2.60         $   2.43         $   1.61
  Income from Discontinued Operations             $   2.69        $   0.86        $   0.63         $   0.38         $   0.39
  Net Income                                      $   4.14 2      $   2.12        $   3.23         $   2.81         $   2.00
Diluted Earnings Per Share of Common Stock
  Income from Continuing Operations               $   1.43        $   1.24        $   2.56         $   2.41         $   1.60
  Income from Discontinued Operations             $   2.65        $   0.84        $   0.62         $   0.36         $   0.38
  Net Income                                      $   4.08 2      $   2.08        $   3.18         $   2.77         $   1.98
                                              ======================================================================================

Financial Position at Year End
Working Capital                                   $ (2,374)       $ (2,110)       $     15         $ (2,116)        $  3,208
Total Assets                                      $ 38,536        $ 36,689        $ 32,342         $ 32,748         $ 32,577
Borrowings and Capital Lease Obligations:
  Short Term                                      $  6,629        $  6,152        $  3,907         $  6,152         $  1,286
  Long Term                                       $  4,495        $  5,897        $  5,052         $  5,646         $  6,338
Stockholders' Equity                              $ 13,954        $ 11,270        $ 10,593         $  8,323         $ 12,743
                                              ======================================================================================

General
For the Year:
  Capital Expenditures                            $  5,480 3      $  7,075 3      $  1,783         $  1,810         $  1,615
  Depreciation and Amortization                   $  1,452        $  1,361        $  1,526         $  1,643         $  1,748
  Research and Development Expense                $  1,308 4      $  1,072 4      $    990         $  1,031         $  1,004
    As Percent of Sales:                               5.3%            4.5%            4.2%             4.2%             4.5%
Average Number of Shares (millions)
  Basic                                              1,129           1,131           1,121            1,170            1,360
  Diluted                                            1,145           1,150           1,140            1,183            1,371
Dividends Per Common Share                        $  1.365        $   1.23        $  1.115         $  1.015         $   0.91
Common Stock Prices
  High                                            $     84 7/16   $     69 3/4    $     49 11/16   $     36 1/2     $     31 3/16
  Low                                             $     51 11/16  $     46 3/8    $     34 13/16   $     26 5/16    $     24 1/8
  Year-End Close                                  $     53 1/16   $     60 1/16   $     47 1/16    $     34 15/16   $     28 1/16
At Year End:
  Employees (thousands) 5                              101              98              97              105              107
  Common Stockholders of Record (thousands)            145             154             158              166              172
  Book Value Per Common Share                     $  12.18        $   9.77        $   9.19         $   7.28         $   9.18
====================================================================================================================================
</TABLE>

1    See Management's Discussion and Analysis, Consolidated Financial Statements
     and Quarterly Financial Data for information relating to significant items
     affecting the results of operations and financial position.

2    Before extraordinary item (Note 8).

3    Includes strategic acquisitions as discussed in Note 23.

4    Excludes purchased in-process research and development.

5    Includes employees of discontinued operations.


                                    DuPont                                   69

<PAGE>   1
                                                                 Exhibit (g)(2)

                                  (Unaudited)


E. I. DU PONT DE NEMOURS AND COMPANY AND CONSOLIDATED SUBSIDIARIES

<TABLE>
<CAPTION>
                                                                       Three Months Ended
CONSOLIDATED INCOME STATEMENT(a)(b)                                          March 31
- -------------------------------------------------------------------------------------------
(Dollars in millions, except per share)                               1999            1998
- -------------------------------------------------------------------------------------------
<S>                                                                  <C>             <C>
SALES(c) .....................................................       $6,295          $6,194
Other Income .................................................           18(d)          297
                                                                     ------          ------
    Total ....................................................        6,313           6,491
                                                                     ------          ------
Cost of Goods Sold and Other Expenses ........................        3,873           4,049
Selling, General and Administrative Expenses .................          535             479
Depreciation and Amortization ................................          335             332
Research and Development .....................................          358             264
Interest Expense .............................................           96             127
Purchased In-Process Research and Development(e) .............           40              60
Employee Separation Costs and Write-Down of Assets ...........         --               118(f)
                                                                     ------          ------
    Total ....................................................        5,237           5,429
                                                                     ------          ------
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND
 AND MINORITY INTERESTS ......................................        1,076           1,062
Provision for Income Tax Expenses ............................          432             417
Minority Interests in Earnings of Consolidated Subsidiaries ..           16               8
                                                                     ------          ------
INCOME FROM CONTINUING OPERATIONS(c) .........................          628             637
DISCONTINUED OPERATIONS
Income from Operations of Discontinued Business,
    Net of Income Taxes ......................................         --               269
Gain on Disposal of Discontinued Business,
    Net of Income Taxes ......................................           35            --
                                                                     ------          ------
NET INCOME ...................................................       $  663          $  906
                                                                     ======          ======


BASIC EARNINGS PER SHARE OF COMMON STOCK(g)
Continuing Operations ........................................       $  .55          $  .56
Discontinued Operations ......................................          .04             .24
                                                                     ------          ------
Net Income ...................................................       $  .59          $  .80
                                                                     ======          ======
DILUTED EARNINGS PER SHARE OF COMMON STOCK(g)
Continuing Operations ........................................       $  .55          $  .55
Discontinued Operations ......................................          .03             .24
                                                                     ------          ------
Net Income ...................................................       $  .58          $  .79
                                                                     ======          ======
DIVIDENDS PER SHARE OF COMMON STOCK ..........................       $  .35          $ .315
                                                                     ======          ======
</TABLE>


See Notes to Financial Statements.


                                          1
<PAGE>   2
                                                                     Form 10-Q/A


<TABLE>
<CAPTION>
                                                                   Three Months Ended
CONSOLIDATED STATEMENT OF CASH FLOWS(a)(b)                              March 31
- -----------------------------------------------------------------------------------------
(Dollars in millions)                                             1999              1998
- -----------------------------------------------------------------------------------------
<S>                                                             <C>               <C>
CASH PROVIDED BY OPERATIONS
  Net Income ............................................       $   663           $   906
  Adjustments to Reconcile Net Income to Cash
    Provided by Continuing Operations:
       Net Income from Discontinued Operations ..........           (35)             (269)
       Depreciation and Amortization ....................           335               332
       Purchased In-Process Research and Development ....            40                60
       Other Noncash Charges and Credits - Net ..........            88               (24)
       Change in Operating Assets and Liabilities - Net .          (944)             (853)
                                                                -------           -------
        Cash Provided by Continuing Operations ..........           147               152
                                                                -------           -------
INVESTMENT ACTIVITIES
  Purchases of Property, Plant and Equipment ............          (473)             (465)
  Investment in Affiliates ..............................            (7)              (17)
  Payments for Businesses Acquired (Net of Cash Acquired)        (1,656)             (694)
  Proceeds from Sales of Assets .........................            59               240
  Investments in Short-Term Financial Instruments - Net .            (2)              (94)
  Miscellaneous - Net ...................................            (7)              (10)
                                                                -------           -------
        Cash Used for Investment Activities .............        (2,086)           (1,040)
                                                                -------           -------
FINANCING ACTIVITIES
  Dividends Paid to Stockholders ........................          (397)             (358)
  Net Increase in Borrowings ............................         2,590             2,734
  Acquisition of Treasury Stock .........................           (44)             (309)
  Proceeds from Exercise of Stock Options ...............            14                36
  Increase in Minority Interests ........................            79              --
                                                                -------           -------
        Cash Provided by Financing Activities ...........         2,242             2,103
                                                                -------           -------
Net Cash Flow from Discontinued Operations ..............          (255)             (191)
                                                                -------           -------
Effect of Exchange Rate Changes on Cash .................           (68)               (4)
                                                                -------           -------
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS ........       $   (20)(h)       $ 1,020
                                                                =======           =======
</TABLE>


See Notes to Financial Statements.


                                        2
<PAGE>   3
                                                                     Form 10-Q/A


<TABLE>
<CAPTION>
CONSOLIDATED BALANCE SHEET(a)(b)                                                    March 31       December 31
- --------------------------------------------------------------------------------------------------------------
(Dollars in millions, except per share)                                               1999            1998
- --------------------------------------------------------------------------------------------------------------
<S>                                                                                 <C>             <C>
                                                    ASSETS
CURRENT ASSETS
Cash and Cash Equivalents ...................................................       $  1,003        $  1,059
Marketable Securities .......................................................             11              10
Accounts and Notes Receivable ...............................................          5,399           4,201
Inventories(i) ..............................................................          3,566           3,129
Prepaid Expenses ............................................................            216             192
Deferred Income Taxes .......................................................            596             645
                                                                                    --------        --------
Total Current Assets ........................................................         10,791           9,236
PROPERTY, PLANT AND EQUIPMENT, less accumulated depreciation and amortization
(March 31, 1999 - $20,652; December 31, 1998 - $20,597) .....................         14,817          14,131
INVESTMENT IN AFFILIATES ....................................................          1,801           1,796
OTHER ASSETS ................................................................          5,908           4,956
NET ASSETS OF DISCONTINUED OPERATIONS(j) ....................................          8,650           8,417
                                                                                    --------        --------
TOTAL(c) ....................................................................         41,967          38,536
                                                                                    ========        ========

                                     LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts Payable ............................................................          1,900           1,929
Short-Term Borrowings and Capital Lease Obligations .........................          9,232           6,629
Income Taxes ................................................................            374             130
Other Accrued Liabilities ...................................................          3,157           2,922
                                                                                    --------        --------
Total Current Liabilities ...................................................         14,663          11,610
LONG-TERM BORROWINGS AND CAPITAL LEASE OBLIGATIONS ..........................          4,566           4,495
OTHER LIABILITIES ...........................................................          7,663           7,640
DEFERRED INCOME TAXES .......................................................            478             430
                                                                                    --------        --------
Total Liabilities ...........................................................         27,370          24,175
                                                                                    --------        --------
MINORITY INTERESTS IN CONSOLIDATED SUBSIDIARIES .............................            464             407
                                                                                    --------        --------
STOCKHOLDERS' EQUITY(k)
Preferred Stock .............................................................            237             237
Common Stock, $.30 par value; 1,800,000,000 shares authorized; shares issued
  at March 31, 1999 - 1,139,514,154; December 31, 1998 - 1,140,354,154 ......            342             342
Additional Paid-In Capital ..................................................          7,866           7,854
Reinvested Earnings .........................................................          6,933           6,705
Accumulated Other Comprehensive Loss ........................................           (526)           (432)
Common Stock Held in Trust for Unearned Employee Compensation and Benefits
  (Flexitrust), at Market (Shares:  March 31, 1999 - 12,379,279;
  December 31, 1998 - 14,167,867) ...........................................           (719)           (752)
                                                                                    --------        --------
Total Stockholders' Equity ..................................................         14,133          13,954
                                                                                    --------        --------
TOTAL .......................................................................       $ 41,967        $ 38,536
                                                                                    ========        ========
</TABLE>


See Notes to Financial Statements.


                                        3
<PAGE>   4
                                                                     Form 10-Q/A



                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)



(a)     These statements are unaudited, but reflect all adjustments that, in the
        opinion of management, are necessary to provide a fair presentation of
        the financial position, results of operations and cash flows for the
        dates and periods covered. All such adjustments are of a normal
        recurring nature. The company's petroleum business is reported as
        discontinued operations and is discussed in Notes (b) and (j).

(b)     Discontinued Operations:
        On September 28, 1998, the company announced that the Board of Directors
        had approved a plan to divest the company's 100 percent-owned petroleum
        business (Conoco Inc.). The company intends to complete the divestiture
        with a tax-free split off by exchanging its remaining Conoco shares
        (69.5 percent) for DuPont shares no later than third quarter 1999. The
        company has not recognized a deferred tax liability for the difference
        between the book basis and tax basis of its investment in Conoco's
        common stock because the company does not expect this basis difference
        to become subject to tax. The company's consolidated financial
        statements and notes report its petroleum business as discontinued
        operations. Prior periods have been restated. Results reported
        separately by Conoco are reported on a stand-alone basis and may differ
        from results based on discontinued operations reporting. In addition,
        beginning October 22, 1998, the company's results from discontinued
        operations reflect minority interests of 30.5 percent.


                                        4
<PAGE>   5
                                                                     Form 10-Q/A

                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)
                                   (Continued)



<TABLE>
<CAPTION>
(c)     CONSOLIDATED SEGMENT INFORMATION -                     Three Months Ended
        CONTINUING OPERATIONS                                       March 31
        ----------------------------------------------------------------------------
        (Dollars in millions)                                1999              1998
        ----------------------------------------------------------------------------
<S>                                                        <C>               <C>
        SEGMENT SALES(1)

        Agriculture & Nutrition ....................       $   780           $   770
        Nylon Enterprise ...........................         1,103             1,173
        Performance Coatings & Polymers ............         1,158             1,157
        Pharmaceuticals(2) .........................           409               217
        Pigments & Chemicals .......................           866               920
        Polyester Enterprise .......................           624               734
        Specialty Fibers ...........................           863               851
        Specialty Polymers .........................         1,002             1,034
        Other ......................................            94               164
                                                           -------           -------
            Total Segment Sales ....................       $ 6,899           $ 7,020

        Elimination of Intersegment Transfers ......          (173)             (204)
        Elimination of Equity Affiliate Sales ......          (431)             (622)
                                                           -------           -------
            SALES ..................................       $ 6,295           $ 6,194
                                                           =======           =======
        AFTER-TAX OPERATING INCOME (LOSS)

        Agriculture & Nutrition ....................       $    91           $    29(3)
        Nylon Enterprise ...........................           102                 5(4)
        Performance Coatings & Polymers ............           100(5)            122
        Pharmaceuticals ............................            75                50
        Pigments & Chemicals .......................           146               157
        Polyester Enterprise .......................            (6)                4
        Specialty Fibers ...........................           181               188
        Specialty Polymers .........................           164               158
        Other ......................................            10                45
                                                           -------           -------
            Total Segment ATOI .....................           863               758

        Interest & Exchange Gains (Losses) .........          (163)(6)           (70)
        Corporate Expenses .........................           (72)              (51)
                                                           -------           -------
              INCOME FROM CONTINUING OPERATIONS ....       $   628           $   637
                                                           =======           =======
</TABLE>

<TABLE>
<CAPTION>
                                                          March 31         December 31
        SIGNIFICANT CHANGES IN SEGMENT ASSETS               1999               1998
        -------------------------------------             --------         -----------
<S>                                                       <C>              <C>
        Performance Coatings & Polymers .........          $4,195(7)          $2,214
                                                           ======             ======
</TABLE>


                                        5
<PAGE>   6
                                                                     Form 10-Q/A


                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)
                                   (Continued)



Footnotes to Note (c)

(1)   Includes pro rata equity affiliate sales and intersegment transfers.

(2)   The increase in sales reflects the current 100 percent ownership of the
      pharmaceuticals business versus 50 percent in 1998. In addition, effective
      first quarter 1999, revenues from contract manufacturing are reclassified
      from Other Income to Sales, and prior periods have been restated. These
      revenues are $27 and $15 for 1999 and 1998, respectively.

(3)   Includes a charge of $60 for revision of the purchase price allocation in
      conjunction with the purchase of Protein Technologies International,
      related to the value assigned to research and development in progress at
      the time of purchase for which technological feasibility has not yet been
      established and no alternative future use is anticipated.

(4)   Includes a charge of $85 related to rationalization of global Nylon
      operations, principally shutdown of certain manufacturing facilities and
      employee separation costs.

(5)   Includes an estimated charge of $40 based on preliminary purchase price
      allocations in conjunction with the purchase of Herberts, the automotive
      coatings business of Hoechst AG, related to the value assigned to research
      and development in progress at the time of purchase for which
      technological feasibility has not yet been established and no alternative
      future use is anticipated.

(6)   Includes an exchange loss of $81 on forward exchange contracts purchased
      in 1998 to fix in U.S. dollars the cash required to acquire Herberts, the
      automotive coatings business of Hoechst AG. The purchase price for
      Herberts was negotiated in German marks.

(7)   The change is primarily the result of the purchase of Herberts, the
      automotive coatings business of Hoechst AG, in February 1999.


                                        6
<PAGE>   7
                                                                     Form 10-Q/A


                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)
                                   (Continued)


(d)   Includes an exchange loss of $131 on forward exchange contracts pur-
      chased in 1998 to fix in U.S. dollars the cash required to acquire
      Herberts, the automotive coatings business of Hoechst AG. The purchase
      price for Herberts was negotiated in German marks.

(e)   Purchased in-process research and development represents the value
      assigned in a purchase business combination to research and development
      projects of the acquired business that were in progress at time of
      purchase for which technological feasibility has not yet been established
      and no alternative future use is anticipated.

      In this regard, an estimated charge was recorded in the first quarter 1999
      in conjunction with the purchase of Herberts, the automotive coatings
      business of Hoechst AG, based on preliminary allocations of purchase price
      that are subject to revision.

      First quarter 1998 represents a charge for revision of the purchase price
      allocation in conjunction with the purchase of Protein Technologies
      International. The charge was not tax effected because this transaction
      was a stock acquisition rather than an asset purchase.

(f)   Represents $40 of employee separation costs within the Nylon business and
      $78 for the shutdown of related manufacturing facilities.

(g)   Basic earnings per share is computed by dividing income available to
      common stockholders (the numerator) by the weighted-average number of
      common shares (the denominator) for the period. The numerator for both
      income from continuing operations and net income is reduced by preferred
      dividends of $2.5. For diluted earnings per share, the numerator is
      adjusted to recognize reduced share of earnings assuming options in
      subsidiary company stock are exercised if the effect of this adjustment is
      dilutive. The denominator is based on the following weighted-average
      number of common shares and includes the additional common shares that
      would have been outstanding if potentially dilutive common shares had been
      issued:

<TABLE>
<CAPTION>
                                                  Three Months Ended
                                                       March 31
                                        ---------------------------------------
                                            Basic                    Diluted
                                        -------------             -------------
<S>                                     <C>                       <C>
      1999                              1,127,086,632             1,138,090,171
      1998                              1,128,415,102             1,145,674,145
</TABLE>


                                        7
<PAGE>   8
                                                                     Form 10-Q/A



                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)
                                   (Continued)


        The difference between basic and diluted weighted-average common shares
        outstanding results from the assumption that dilutive stock options
        outstanding were exercised.

        The following number of stock options are antidilutive, and therefore
        are not included in the diluted earnings per share calculation since the
        exercise price is greater than the average market price:

<TABLE>
<CAPTION>
                                                   March 31
                                        ------------------------------
                                          1999                 1998
                                        ---------            ---------
<S>                                     <C>                  <C>
              Stock Options             8,576,345            4,998,517
</TABLE>

        Compensation expense recognized in income for stock-based employee
        compensation awards was $7 and $34 for the three months ended March 31,
        1999 and 1998, respectively.

        Shares held by the Flexitrust are not considered outstanding in comput-
        ing the foregoing weighted-average number of common shares.

(h)     Includes the change in cash and cash equivalents classified in the
        Consolidated Balance Sheet within "Net Assets of Discontinued
        Operations."

<TABLE>
<CAPTION>
                                                       March 31         December 31
(i)     Inventories                                      1999              1998
        -----------                                    --------         -----------
<S>                                                    <C>              <C>
        Finished Products .........................    $ 2,567            $ 2,209
        Semifinished Products .....................        826                836
        Raw Materials and Supplies ................        846                749
                                                       -------            -------
                                                         4,239              3,794
        Less:  Adjustment of Inventories to a
          Last-In, First-Out (LIFO) Basis .........        673                665
                                                       -------            -------
            Total .................................    $ 3,566            $ 3,129
                                                       =======            =======
</TABLE>


                                       8
<PAGE>   9
                                                                     Form 10-Q/A



                          NOTES TO FINANCIAL STATEMENTS
                     (Dollars in millions, except per share)
                                   (Continued)



<TABLE>
<CAPTION>
                                                       March 31         December 31
(j)   Net Assets of Discontinued Operations              1999              1998
      -------------------------------------            --------         -----------
<S>                                                    <C>              <C>
      Cash and Cash Equivalents .................      $   411            $   375
      Other Current Assets ......................        2,885              2,864
      Property, Plant and Equipment - Net .......       11,254             11,438
      Other Assets ..............................        2,102              2,011
      Current Liabilities .......................       (2,404)            (2,473)
      Other Liabilities .........................       (3,898)            (4,115)
      Minority Interests ........................       (1,700)            (1,683)
                                                       -------            -------
        Net Assets of Discontinued Operations ...      $ 8,650            $ 8,417
                                                       =======            =======
</TABLE>

(k)   The following sets forth the company's total comprehensive income for the
      periods shown:

<TABLE>
<CAPTION>
                                                         Three Months Ended
                                                              March 31
                                                      -----------------------
                                                      1999               1998
                                                      ----               ----
<S>                                                   <C>                <C>
      Net Income ................................     $663               $906
      Other Comprehensive Loss, Net of Tax ......      (94)               (20)
                                                      ----               ----
      Total Comprehensive Income ................     $569               $886
                                                      ====               ====
</TABLE>


                                       9


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