KEY ENERGY GROUP INC
S-3, 1998-11-20
DRILLING OIL & GAS WELLS
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<PAGE>   1
 
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 20, 1998.
 
                                                 REGISTRATION NO. 333-
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- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
                                    FORM S-3
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
                             KEY ENERGY GROUP, INC.
 
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                                                          <C>
                          MARYLAND                                                    04-2648081
      (State or other jurisdiction of incorporation or                   (I.R.S. Employer Identification No.)
                       organization)
</TABLE>
 
                          TWO TOWER CENTER, 20TH FLOOR
                        EAST BRUNSWICK, NEW JERSEY 08816
                                 (732) 247-4822
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
 
                                FRANCIS D. JOHN
                          TWO TOWER CENTER, 20TH FLOOR
                        EAST BRUNSWICK, NEW JERSEY 08816
                                 (732) 247-4822
(Name, address and telephone number, including area code, of agent for service)
                             ---------------------
                                With Copies To:
 
<TABLE>
<S>                                                          <C>
                    JACK D. LOFTIS, JR.                                            SAMUEL N. ALLEN
                   KEY ENERGY GROUP, INC.                                      PORTER & HEDGES, L.L.P.
                TWO TOWER CENTER, 20TH FLOOR                                  700 LOUISIANA, 35TH FLOOR
              EAST BRUNSWICK, NEW JERSEY 08816                                   HOUSTON, TEXAS 77002
                       (732) 247-4822                                               (713) 226-0600
</TABLE>
 
                             ---------------------
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC: From time to
time after the Registration Statement becomes effective.
     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box.  [X]
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [ ]
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]
                             ---------------------
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
                                                                   PROPOSED MAXIMUM           PROPOSED
          TITLE OF EACH CLASS OF               AMOUNT TO BE            OFFERING          MAXIMUM AGGREGATE         AMOUNT OF
      SECURITIES TO BE REGISTERED(1)           REGISTERED(2)        PRICE PER UNIT       OFFERING PRICE(3)     REGISTRATION FEE
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>                 <C>                    <C>                    <C>
Debt Securities...........................
Preferred Stock...........................
Common Stock, $.10 per share..............
Warrants..................................
        Total.............................    $500,000,000(4)            (4)             $500,000,000(5)(6)        $139,000
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) Also includes such indeterminate number of shares of Common Stock and/or
    Preferred Stock and/or amount of Debt Securities as may be issued upon
    conversion or exercise of any Debt Securities, Preferred Stock and/or
    Warrants that provide for conversion or exercise into other securities.
(2) Or, if any Debt Securities are issued with original issue discount, such
    greater amount as shall result in an aggregate public offering price of
    $500,000,000.
(3) Estimated solely for the purpose of computing the registration fee pursuant
    to Rule 457(o).
(4) Pursuant to General Instruction II.D of Form S-3, not specified as to each
    class and/or series of securities to be registered.
(5) Represents the aggregate (i) issue price of any Debt Securities issued with
    original issue discount, (ii) principal amount of all Debt Securities,
    Preferred Stock or Warrants, (iii) amount used when computing the
    registration fee pursuant to Rule 457(c) for Common Stock, (iv) liquidation
    preference of any Preferred Stock, (v) issue price of any Warrants and (vi)
    exercise price of any securities issuable upon exercise of Warrants.
(6) No separate consideration will be received for any Debt Securities,
    Preferred Stock or Common Stock issuable upon conversion of Debt Securities
    or Preferred Stock.
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
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- --------------------------------------------------------------------------------
<PAGE>   2
 
                SUBJECT TO COMPLETION, DATED NOVEMBER 20, 1998.
 
THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT OFFER THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE SEC
IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES AND WE
ARE NOT SOLICITING AN OFFER TO BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER
OR SALE IS NOT PERMITTED.
 
PROSPECTUS
 
                         [KEY ENERGY GROUP, INC. LOGO]
 
                                  $500,000,000
                             KEY ENERGY GROUP, INC.
 
                                Debt Securities
                                Preferred Stock
                                  Common Stock
                                    Warrants
 
                               ------------------
 
     This prospectus is part of a registration statement that we filed with the
SEC using a "shelf" registration process. This means:
 
     - we may issue the debt securities, preferred stock, common stock and
       warrants covered by this prospectus from time to time;
 
     - we will provide a prospectus supplement each time we issue the
       securities;
 
     - the prospectus supplement will provide specific information about the
       terms of that offering and also may add, update or change information
       contained in this prospectus.
 
     Our common stock is listed and traded on the New York Stock Exchange under
the symbol "KEG."
 
  CONSIDER CAREFULLY THE RISK FACTORS BEGINNING ON PAGE 6 IN THIS PROSPECTUS.
 
Neither the SEC nor any state securities commission has approved these
securities or determined that this prospectus is accurate or complete. Any
representation to the contrary is a criminal offense.
 
                  This Prospectus is dated November   , 1998.
<PAGE>   3
 
     YOU SHOULD RELY ONLY ON THE INFORMATION INCORPORATED BY REFERENCE OR
PROVIDED IN THIS PROSPECTUS OR ANY PROSPECTUS SUPPLEMENT. WE HAVE NOT AUTHORIZED
ANYONE ELSE TO PROVIDE YOU WITH DIFFERENT INFORMATION. WE ARE NOT MAKING AN
OFFER OF THESE SECURITIES IN ANY STATE WHERE THE OFFER IS NOT PERMITTED. YOU
SHOULD NOT ASSUME THAT THE INFORMATION IN THIS PROSPECTUS OR ANY PROSPECTUS
SUPPLEMENT IS ACCURATE AS OF ANY DATE OTHER THAN THE DATE ON THE FRONT OF THOSE
DOCUMENTS.
 
                               TABLE OF CONTENTS
 
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SECTION                                                       PAGE
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<S>                                                           <C>
Forward-looking Statements..................................    2
Where You Can Find More Information.........................    3
Summary.....................................................    4
Ratio of Earnings to Fixed Charges..........................    6
Risk Factors................................................    6
Use of Proceeds.............................................    8
Plan of Distribution........................................    9
Description of Debt Securities..............................   10
Description of Capital Stock................................   14
Description of Warrants.....................................   15
Legal Matters...............................................   15
Experts.....................................................   15
</TABLE>
 
                           FORWARD-LOOKING STATEMENTS
 
     The statements made in this prospectus or in the documents we have
incorporated by reference that are not statements of historical fact are
"forward looking statements" within the meaning of Section 27A of the Securities
Act of 1933 and Section 21E of the Securities Exchange Act of 1934.
Forward-looking statements generally can be identified by the use of
forward-looking terminology such as "may," "will," "expect," "intend,"
"estimate," "anticipate" or "believe," or similar terminology. The
forward-looking statements include discussions about business strategy and
expectations concerning market position, future operations, margins,
profitability, liquidity and capital resources, and statements concerning the
integration into our business of the operations we have acquired. Although we
believe that the expectations in such statements are reasonable, we cannot give
any assurance that those expectations will be correct. We caution you not to
place undue reliance on these forward-looking statements, which speak only as of
the date of this prospectus. Our operations are subject to several
uncertainties, risks and other influences, many of which are outside our control
and any of which could materially affect our results of operations and
ultimately prove the statements we make to be inaccurate. Important factors that
could cause actual results to differ materially from our expectations are
discussed under the heading "Risk Factors" and elsewhere in this prospectus.
 
                                        2
<PAGE>   4
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     We have filed with the SEC a registration statement on Form S-3 (Reg. No.
333-     ) with respect to the securities we are offering. This prospectus does
not contain all the information contained in the registration statement,
including its exhibits and schedules. You should refer to the registration
statement, including the exhibits and schedules, for further information about
us and the securities we are offering. Statements we make in this prospectus
about certain contracts or other documents are not necessarily complete. When we
make such statements, we refer you to the copies of the contracts or documents
that are filed as exhibits to the registration statement, because those
statements are qualified in all respects by reference to those exhibits. The
registration statement, including exhibits and schedules, is on file at the
offices of the SEC and may be inspected without charge.
 
     We file annual, quarterly and special reports, proxy statements and other
information with the SEC. Our SEC filings, including the registration statement,
are available to the public over the Internet at the SEC's web site at
http://www.sec.gov. You also may read and copy any document we file 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 about
the public reference rooms.
 
     SEC rules allow us to include some of the information required to be in the
registration statement by incorporating that information by reference to
documents we file with them. That means we can disclose important information to
you by referring you to those documents. The information incorporated by
reference is an important part of this prospectus, and information that we file
later with the SEC will automatically update and supersede this information. We
incorporate by reference the documents listed below and any future filings made
with the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act until
we sell all of the securities covered by this prospectus:
 
     - Annual Report on Form 10-K for the year ended June 30, 1998;
 
     - Quarterly Report on Form 10-Q for the quarter ended September 30, 1998.
 
     - Current Reports on Form 8-K, filed on September 28, 1998 and Form 8-K/A
       filed on October 28, 1998;
 
     - Proxy Statement on Schedule 14A, dated November 17, 1998;
 
     - Tender Offer Statements on Schedule 14D-1, filed on August 17, 1998 and
       on Schedule 14D-1/A filed on August 26, 1998 and September 15, 1998; and
 
     - The description of the Company's common stock contained in Form 8-A dated
       March 27, 1998, including any amendments or reports that have been filed
       to update the description.
 
     You may request a copy of these filings, which we will provide to you at no
cost, by writing or telephoning us at the following address:
 
    Key Energy Group, Inc.
    Two Tower Center, 20th Floor
    East Brunswick, New Jersey 08816
    (732) 247-4822
 
                                        3
<PAGE>   5
 
                                    SUMMARY
 
THE COMPANY
 
     We are the world's largest operator of onshore oil and gas well service
rigs and related equipment. Through our wholly owned subsidiaries, we operate in
all major onshore oil and gas producing regions in the Continental United States
and in Argentina and Ontario, Canada. We operate approximately 1,425 well
service and workover rigs, 1,120 fluid hauling and other trucks and 74 drilling
rigs (including 21 well service rigs, 28 trucks and six drilling rigs in
Argentina). We provide a full range of maintenance and workover services to
major and independent oil and gas companies in all of our operating regions. In
addition to maintenance and workover services, we provide services that include:
 
     - the completion of newly drilled wells;
 
     - the recompletion of existing wells (including horizontal recompletions);
 
     - plugging and abandonment of wells at the end of their useful lives;
 
     - oilfield fluid and equipment transportation;
 
     - oilfield fluid storage and disposal services;
 
     - fishing and rental tools;
 
     - wireline services;
 
     - air drilling;
 
     - hot oiling; and
 
     - production testing services.
 
     In addition, we are engaged in contract drilling in West Texas, the Four
Corners Area, the ArkLaTex Region, Michigan, Argentina and Ontario, Canada and
we own and produce oil and natural gas in the Permian Basin and Texas Panhandle.
 
GROWTH STRATEGY
 
     Historically, the domestic well servicing industry has been highly
fragmented. It has been characterized by many small companies competing locally
based on pricing and the quality of services offered. In recent years, however,
many major and independent oil and gas companies have emphasized not only
pricing, but also the safety records, quality management systems and the breadth
of services offered by well servicing contractors. This market environment
requires significant expenditures by smaller companies to meet increasingly
rigorous standards, and has forced many smaller well servicing companies to sell
their operations to larger competitors. As a result, the well service industry
has seen high levels of consolidation.
 
     Over the last 30 months, we have been the leading consolidator of the well
service industry, completing in excess of 50 acquisitions of well servicing and
drilling operations. This consolidation has led to reduced fragmentation in the
market and a more predictable demand for well services. Our management structure
is decentralized, which allows for rapid integration of acquisitions and the
retention of a strong local presence of many of our acquired businesses.
                                        4
<PAGE>   6
 
     As a result of our recent growth through acquisitions, we have developed a
strategy to:
 
     - maximize operating efficiencies by focusing on reducing costs;
 
     - fully integrate acquisitions into our decentralized organizational
       structure to attempt to maximize operating margins;
 
     - expand the business lines and services we offer in our existing areas of
       operations; and
 
     - extend the geographic scope and operating environments for our
       operations.
 
     If the current decline in the oil prices persists or a recovery in prices
remains uncertain we may curtail or halt our growth strategy until prices reach
more favorable ranges.
 
THE OFFERING
 
     This prospectus covers up to $500,000,000 of debt securities, preferred
stock, common stock and warrants that we may issue for cash. This prospectus
also may be used for resales of the securities issued under this prospectus. See
"Use of Proceeds."
                                        5
<PAGE>   7
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
     The ratio of our earnings to our fixed charges for each of the periods
indicated is as follows:
 
<TABLE>
<CAPTION>
   FISCAL YEAR ENDED JUNE 30,      THREE MONTHS ENDED
1994   1995   1996   1997   1998   SEPTEMBER 30, 1998
- ----   ----   ----   ----   ----   ------------------
<S>    <C>    <C>    <C>    <C>    <C>
2.65   2.57   2.62   2.52   2.61          1.34
</TABLE>
 
     For these ratios, earnings consist of income from continuing operations
before income taxes and fixed charges. Fixed charges consist of interest
expenses, amortization of debt issuance expenses and the portions of rentals and
lease obligations representative of interest factor.
 
     Our principal executive offices are located at Two Tower Center, Twentieth
Floor, East Brunswick, New Jersey 08816 and our telephone number is (732)
247-4822.
 
                                  RISK FACTORS
 
     You should consider the following risk factors and other information in
this prospectus before deciding to buy our securities.
 
SUBSTANTIAL LEVERAGE
 
     We are highly leveraged. At September 30, 1998, our ratio of total debt to
total capitalization was approximately 84.0%. Our debt could adversely affect
our ability to obtain additional financing for working capital, acquisitions or
other purposes. Our debt also could make us more vulnerable to industry
downturns and competitive pressures.
 
RESTRICTIVE DEBT COVENANTS
 
     Our existing debt agreements contain covenants that limit our ability to,
among other things, borrow additional money, make capital expenditures and other
investments and pay dividends. These covenants also require us to meet certain
financial tests. If we are unable to meet our debt service obligations or comply
with these covenants and tests, we would be in default under our existing debt
agreements. A default, if not waived, could result in acceleration of our
indebtedness and our bankruptcy. In recent years, cash generated from our
operating activities and borrowings have been sufficient for us to meet our debt
service, acquisition and capital expenditure requirements. There can be no
assurance that we will continue to generate sufficient cash to meet our future
requirements.
 
DEPENDENCE ON OIL AND GAS INDUSTRY
 
     Our business is dependent on conditions in the oil and gas industry,
especially the production expenditures of oil and gas companies. The demand for
our services is directly influenced by current and anticipated oil and gas
prices, oil and gas production costs, and government regulation. The demand for
well servicing and related services in the United States currently is depressed
in many markets because of weak oil prices. The weakness in oil prices may cause
lower day rates and lower use of available well service equipment. Periods of
diminished or weakened demand may continue to occur. In addition, reductions in
oil prices can result in a reduction in the trading price of our securities,
even if the reduction in oil prices does not affect our business generally.
 
                                        6
<PAGE>   8
 
RISKS ASSOCIATED WITH ACQUISITIONS
 
     One of our business strategies is to acquire operations and assets that are
complementary to our existing businesses. Acquiring these operations and assets
involves financial, operational and legal risks. These risks include the
difficulty of assimilating operations and personnel of the acquired businesses
and maintaining uniform standards, controls, procedures and policies. In
addition, other potential buyers compete with us for acquisitions of businesses.
That competition could cause us to pay a higher price for acquisitions than we
otherwise might have to pay or reduce our acquisition opportunities. We cannot
assure we will be successful in making additional acquisitions or in integrating
any acquired businesses.
 
OPERATING RISKS; INSURANCE
 
     Our operations are subject to many hazards. These hazards include
explosions, blow-outs, reservoir damage, loss of well control, cratering and
fires. Our operations also could cause damage to the environment. In addition,
we are subject to seasonal risks caused by adverse weather conditions such as
severe winter storms. Operations in northern regions are subject to limitations
on transporting equipment during the spring thaw. These hazards and risks could
cause the suspension of operations, damage to or destruction of equipment and
injury or death to field personnel. We have insurance to protect against many of
these liabilities. This insurance is capped at certain levels and does not
provide coverage for all liabilities. Our insurance may not be adequate to cover
all losses or liabilities that we might incur in our operations. Moreover, we
may not be able to maintain insurance at adequate levels or at reasonable rates.
Particular types of coverage may not be available in the future.
 
COMPETITION
 
     Competition is intense in all of our markets. We compete on the basis of
the quality of our personnel, equipment and service, safety record and pricing.
Certain competitors, however, have access to greater financial and other
resources than do we. These resources could allow those competitors to price
their services more aggressively than we can, which could hurt our
profitability.
 
POTENTIAL LABOR SHORTAGE
 
     We historically have experienced a high employee turnover rate and we
continue to need replacement and additional workers. Many skilled or trainable
workers reside near our facilities; however, we cannot assure we will be
successful in recruiting and training these workers due to several factors.
These factors include the potential inability or lack of desire by workers to
commute to our facilities and job sites and competition for workers from other
industries. We believe that our wage rates are competitive with the wage rates
of our competitors and other potential employers. A significant increase in the
wages other employers pay could result in a reduction in our workforce,
increases in our wage rates, or both. Either of these events could diminish our
profitability and growth potential.
 
GOVERNMENTAL REGULATION AND ENVIRONMENTAL MATTERS
 
     Our operations are subject to federal, state and local laws and regulations
including those relating to protection of the environment, natural resources,
health and safety, waste management, and transportation of hydrocarbons and
chemicals. Sanctions for noncompliance may include administrative, civil and
criminal penalties, revocation of permits and corrective action orders. These
laws
 
                                        7
<PAGE>   9
 
sometimes apply retroactively. In addition, a party can be liable for
environmental damage without regard to that party's negligence or fault.
Therefore, we could have liability for the conduct of others, or for acts that
were in compliance with all applicable laws at the time we performed them.
Environmental laws have become more stringent over the years. In addition, the
modification or interpretation of existing laws or regulations or the adoption
of new laws or regulations curtailing exploratory or development drilling for
oil and gas could limit well servicing opportunities.
 
INTERNATIONAL INVESTMENTS
 
     We have investments and may make additional investments in Argentina and
Canada. We also may make other investments outside the United States. Foreign
investments are subject to risks relating to the political, social and economic
structures of those countries. Risks may include fluctuations in currency
valuation, expropriation, confiscatory taxation and nationalization, currency
conversion restrictions, increased regulation and approval requirements and
governmental policies limiting returns to foreign investors.
 
DEPENDENCE ON KEY PERSONNEL
 
     We depend upon the performance of our executive officers. We have entered
into employment agreements with these executive officers that contain
non-compete provisions. Notwithstanding these agreements, we may not be able to
retain our executive officers and may not be able to enforce the non-compete
provisions in the employment agreements. We maintain key man life insurance on
the lives of certain of our officers, including our Chief Executive Officer.
This insurance does not mean that the death or disability of one or more of them
would not have a material adverse effect upon our operations.
 
SHARES ELIGIBLE FOR FUTURE SALE; POSSIBLE ADVERSE EFFECT ON FUTURE MARKET PRICES
 
     The trading price of our securities could drop if there are large numbers
of sales into the market or if there is perception that those sales could occur.
These factors also could make it more difficult for us to raise funds through
future securities offerings. As of October 31, 1998, we had a total of
18,293,055 shares of common stock outstanding. In addition, approximately 10.3
million shares of common stock are issuable upon the conversion of existing
options, warrants and convertible securities.
 
CERTAIN ANTI-TAKEOVER PROVISIONS; PREFERRED STOCK
 
     Certain provisions of our Articles of Incorporation could make it more
difficult for a third party to acquire control of us, even if a change in
control would be beneficial to our stockholders. The Articles of Incorporation
allow us to issue preferred stock without stockholder approval. Issuances of
preferred stock could make it more difficult for a third party to acquire us.
See "Description of Capital Stock."
 
                                USE OF PROCEEDS
 
     Except as otherwise described in any prospectus supplement, the net
proceeds from the sale of securities will be used for general corporate
purposes, which may include refinancings of indebtedness, working capital,
capital expenditures, acquisitions and repurchases and redemptions of
securities.
 
                                        8
<PAGE>   10
 
                              PLAN OF DISTRIBUTION
 
     We may sell the securities through underwriters, agents or dealers or
directly to purchasers. A prospectus supplement will set forth the terms of each
specific offering, including the name or names of any underwriters or agents,
the purchase price of the securities and the proceeds to us from such sales, any
delayed delivery arrangements, any underwriting discounts and other items
constituting underwriters' compensation, any initial public offering price and
any discounts or concessions allowed or reallowed or paid to dealers. Any
initial public offering price and any discounts or concessions allowed or
reallowed or paid to dealers may be changed from time to time.
 
     If underwriters are used in the sale, the securities will be acquired by
the underwriters for their own account and may be resold from time to time in
one or more transactions, including negotiated transactions, at a fixed public
offering price or at varying prices determined at the time of sale. The
securities may be offered to the public either through underwriting syndicates
represented by one or more managing underwriters or directly by one or more
firms acting as underwriters. The underwriter or underwriters with respect to a
particular underwritten offering and, if an underwriting syndicate is used, the
managing underwriter or underwriters, will be set forth on the cover of such
prospectus supplement. Unless otherwise set forth in the prospectus supplement,
the underwriters will be obligated to purchase all the securities if any are
purchased.
 
     During and after an offering through underwriters, the underwriters may
purchase and sell the securities in the open market. These transactions may
include overallotment and stabilizing transactions and purchases to cover
syndicate short positions created in connection with the offering. The
underwriters also may impose a penalty bid, under which selling concessions
allowed to syndicate members or other broker-dealers for the securities they
sell for their account may be reclaimed by the syndicate if the syndicate
repurchases the securities in stabilizing or covering transactions. These
activities may stabilize, maintain or otherwise affect the market price of the
securities then offered, which may be higher than the price that might otherwise
prevail in the open market, and, if commenced, may be discontinued at any time.
 
     We may sell the securities directly or through agents we designate from
time to time. Any agent involved in the offer or sale of the securities covered
by this prospectus will be named, and any commissions payable by us to an agent
will be set forth, in a prospectus supplement relating thereto. Unless otherwise
indicated in a prospectus supplement, any such agent will be acting on a best
efforts basis for the period of its appointment.
 
     If dealers are used in any of the sales of securities covered by this
prospectus, the Company will sell those securities to dealers as principals. The
dealers may then resell the securities to the public at varying prices the
dealers determine at the time of resale. The names of the dealers and the terms
of the transaction will be set forth in a prospectus supplement.
 
     We may sell the securities directly to institutional investors or others,
who may be deemed to be underwriters within the meaning of the Securities Act
with respect to any sale thereof. The terms of any such sales will be described
in a prospectus supplement.
 
     If so indicated in a prospectus supplement, we will authorize agents,
underwriters or dealers to solicit offers from certain types of institutions to
purchase securities from us at the public offering price set forth in the
prospectus supplement pursuant to delayed delivery contracts providing for
payment and delivery on a specified date in the future. These contracts will be
subject only to those conditions set forth in the prospectus supplement, and the
prospectus supplement will set forth the commission payable for solicitation of
such contracts.
 
                                        9
<PAGE>   11
 
     Agents, dealers and underwriters may be entitled under agreements entered
into with us to indemnification by us against certain civil liabilities,
including liabilities under the Securities Act, or to contribution with respect
to payments which such agents, dealers or underwriters may be required to make
in respect thereof. Agents, dealers and underwriters may be customers of, engage
in transactions with, or perform services on our behalf.
 
                         DESCRIPTION OF DEBT SECURITIES
 
     The debt securities will be our direct unsecured general obligations. The
debt securities will be either senior debt securities or subordinated debt
securities and will be issued under one or more separate indentures. Senior debt
securities will be issued under a senior indenture and subordinated debt
securities will be issued under a subordinated indenture. The senior indenture
and the subordinated indenture are referred to below as the indentures.
 
     We have summarized selected provisions of the indentures below. The summary
is not complete. The forms of the indentures have been filed as exhibits to the
registration statement, and you should read the indentures for provisions that
may be important to you. In the summary, we have included references to section
numbers of the indentures so that you can easily locate those provisions.
Capitalized terms used in this summary have the meanings used in the indentures.
 
GENERAL
 
     The Indentures do not limit the aggregate principal amount of debt
securities that can be issued thereunder. Debt securities may be issued in one
or more series, each in an aggregate principal amount authorized by the Company
before issuance, and may be in any currency or currency unit that we may
designate. (Section 301) debt securities of a series may be issued in registered
or global form. (Sections 201 and 203) The Indentures do not limit the amount of
other unsecured indebtedness or securities that we can issue. The senior debt
securities will rank equally with all of our other senior debt. The subordinated
debt securities will have a junior position to all of our senior debt.
 
     We are a holding company that conducts all operations through our
subsidiaries. Holders of debt securities generally will have a junior position
to claims of creditors of our subsidiaries including trade creditors, debt
holders, secured creditors, taxing authorities, guaranty holders and any
preferred stockholders. At September 30, 1998, we did not have any outstanding
preferred stock and we and our subsidiaries had approximately $829.0 million of
outstanding debt.
 
     A prospectus supplement and a supplemental indenture relating to any series
of debt securities being offered will include specific terms relating to the
offering. These terms will include some or all of the following:
 
     - the title and type of debt securities being offered;
 
     - the total principal amount of debt securities being offered;
 
     - the dates on which the principal of, and premium, if any, on the offered
       debt securities is payable;
 
     - the interest rate;
 
     - the date from which interest will accrue;
 
     - the interest payment dates;
 
                                       10
<PAGE>   12
 
     - any optional redemption periods;
 
     - any sinking fund or other provisions that would obligate us to repurchase
       or otherwise redeem the debt securities;
 
     - whether the debt securities will be convertible into shares of common
       stock or exchangeable for other of our securities, and if so, the terms
       of conversion or exchange;
 
     - events causing acceleration of maturity;
 
     - any provisions granting special rights to holders when the specified
       event occurs;
 
     - any changes to or additional events of default or covenants;
 
     - any special tax implications of the debt securities; and
 
     - any other terms of the debt securities (Section 301).
 
DENOMINATIONS
 
     The debt securities will be issued in registered form of $1,000 each or
multiples thereof. (Section 302)
 
SUBORDINATION
 
     Under the subordinated indenture, payment of the principal, interest and
any premium on the subordinated debt securities generally will be subordinated
and junior in right of payment to the prior payment in full of all senior debt.
The subordinated indenture provides that no payment of principal, interest or
any premium on the subordinated debt securities may be made in the event:
 
     - of any insolvency, bankruptcy or similar proceeding involving the Company
       or our property; or
 
     - we fail to pay the principal, interest, any premium or any other amounts
       on any senior debt when due.
 
     The subordinated indenture will not limit the amount of senior debt that we
may incur.
 
     Senior debt is defined to include all notes or other unsecured evidences of
indebtedness including guarantees of the Company for money borrowed by the
Company, not expressed to be subordinate or junior in right of payment to any
other indebtedness of the Company.
 
EVENTS OF DEFAULT
 
     The following are Events of Default under each Indenture:
 
     - failure to pay principal or any premium on any debt security when due;
 
     - failure to pay any interest on any debt security when due, continued for
       30 days;
 
     - failure to deposit any mandatory sinking fund payment when due, continued
       for 30 days;
 
     - failure to perform any other covenant in the Indenture that continues for
       90 days after written notice;
 
     - certain events of bankruptcy, insolvency or reorganization; and
 
     - any other Event of Default as may be specified with respect to debt
       securities of such series. (Section 501)
 
                                       11
<PAGE>   13
 
     An Event of Default for a particular series of debt securities does not
necessarily constitute an Event of Default for any other series of debt
securities. The Trustee may withhold notice to the holders of debt securities of
any default (except in the payment of principal or interest) if the Trustee
considers withholding of notice to be in the best interest of the holders.
(Section 602)
 
     If an Event of Default occurs, either the Trustee or the holders of at
least 25% in principal amount of the outstanding debt securities may declare the
principal amount of all the debt securities of the applicable series to be due
and payable immediately. If this happens, subject to certain conditions, the
holders of a majority in principal amount of the outstanding debt securities of
such series can void the declaration. These conditions include the requirement
that we have paid or deposited with the Trustee a sum sufficient to pay all
overdue principal and interest payments on the series of debt securities subject
to the default. (Section 502) If an Event of Default occurs due to certain
events of bankruptcy, insolvency or reorganization, the principal amount of the
outstanding debt securities of all series will become immediately due and
payable without any declaration or other act on the part of either Trustee or
any holder.
 
     Depending on the terms of our indebtedness, an Event of Default under an
Indenture may cause a cross default on such other indebtedness.
 
     Other than its duties in the case of default, the Trustee is not obligated
to exercise any of its rights or powers under any Indenture at the request,
order or direction of any holders unless the holders offer the Trustee
reasonable indemnity. (Section 601) If the holders provide reasonable
indemnification, the holders of a majority of principal amount of any series of
debt securities may direct the time, method and place of conducting any
proceeding or any remedy available to the Trustee, or exercising any power
conferred upon the Trustee for any series of debt securities. (Section 512)
 
COVENANTS
 
     Under the Indentures, we will:
 
     - pay the principal, interest and any premium on the debt securities when
       due;
 
     - maintain a place of payment;
 
     - deliver a report to the Trustee at the end of each fiscal year reviewing
       the Company's obligations under the Indentures; and
 
     - deposit sufficient funds with any payment agent on or before the due date
       for any principal, interest or any premium.
 
MODIFICATION OF INDENTURES
 
     Under each Indenture, all rights and obligations of the holders may be
modified with the consent of the holders of a majority in aggregate principal
amount of the outstanding debt securities of each series effected by the
modification. No modification of the principal or interest payment terms and no
modification reducing the percentage required for modifications is effective
against any holder without its consent. (Sections 901 and 902)
 
CONSOLIDATION, MERGER AND SALE OF ASSETS
 
     Each Indenture generally permits a consolidation or merger between us and
another company. They also permit the sale by us of all or substantially all of
our property and assets. If this happens,
 
                                       12
<PAGE>   14
 
the remaining or acquiring company will assume all of our responsibilities and
liabilities under the Indentures, including the payment of all amounts due on
the debt securities and performance of the covenants in the Indentures.
 
     We will only consolidate or merge with or into any other company or sell
all or substantially all of our assets according to the terms and conditions of
the Indentures. The remaining or acquiring company will be substituted for us in
the Indentures with the same effect as if it had been an original party to the
Indenture. Thereafter, the successor company may exercise our rights and powers
under any Indenture, in our name or in its own name. Any act or proceeding
required or permitted to be done by our board of directors or any of our
officers may be done by the board or officers of the successor company. If we
sell all or substantially all of our assets, we shall be released from all our
liabilities and obligations under any Indenture and under the debt securities.
(Sections 801 & 802)
 
DISCHARGE AND DEFEASANCE
 
     We will be discharged from our obligations under the debt securities of any
series if we deposit with the Trustee enough cash or government securities to
pay the principal, interest, any premium and any other sums due to the stated
maturity date or redemption date of the debt securities of the series. If this
happens, the holders of the debt securities of the series will not be entitled
to the benefits of the Indenture except for registration, transfer and exchange
of debt securities and replacement of lost, stolen or mutilated debt securities.
(Section 401)
 
     Under federal income tax law as of the date of this prospectus, a discharge
may be treated as an exchange of the related debt securities. Each holder might
be required to recognize gain or loss equal to the difference between the
holder's cost or other tax basis for the debt securities and the value of the
holder's interest in the trust. Holders might be required to include as income a
different amount than would be includable without the discharge. Prospective
investors are urged to consult their own tax advisers as to the consequences of
a discharge, including the applicability and effect of tax laws other than the
federal income tax law.
 
PAYMENT AND PAYING AGENTS
 
     Principal, interest and premium on fully registered securities will be paid
at designated places. Payment will be made by check mailed to the person in
whose name the debt securities are registered on the day specified in the
Indentures or any prospectus supplement. Payments in other forms will be paid at
a place designated by us and specified in a prospectus supplement. (Section 307)
 
     Fully registered securities may be transferred or exchanged at the
corporate trust office of the Trustee or at any other office or agency
maintained by us for such purposes without the payment of any service charge
except for any tax or governmental charge. (Section 1002)
 
GLOBAL SECURITIES
 
     The Debt Securities of a series may be issued in the form of one or more
global certificates that will be deposited with a depositary identified in a
prospectus supplement. Unless otherwise stated in any prospectus supplement, The
Depository Trust Company, New York, New York ("DTC") will act as depositary.
Beneficial interests in global certificates will be shown on, and transfers of
global certificates will be effected only through, records maintained by DTC and
its participants.
 
                                       13
<PAGE>   15
 
                          DESCRIPTION OF CAPITAL STOCK
 
     As of October 31, 1998, our authorized capital stock was 100,000,000
shares, which may be issued as either shares of preferred stock or common stock.
As of that date, we had 18,293,055 shares of common stock outstanding and no
shares of preferred stock outstanding.
 
COMMON STOCK
 
     Listing. Our common stock is listed on the New York Stock Exchange under
the symbol "KEG." Any additional common stock we issue will also be listed on
the NYSE.
 
     Dividends. Common stockholders may receive dividends when declared by the
board of directors. Dividends may be paid in cash, stock or another form.
However, certain of our existing debt agreements contain covenants that
currently restrict us from paying dividends. Additionally, in certain cases,
common stockholders may not receive dividends until we have satisfied our
obligations to any preferred stockholders.
 
     Fully Paid. All outstanding shares of common stock are fully paid and
non-assessable. Any additional common stock we issue will also be fully paid and
non-assessable.
 
     Voting Rights. Each share of common stock is entitled to one vote in the
election of directors and other matters. Common stockholders are not entitled to
preemptive or cumulative voting rights.
 
     Other Rights. We will notify common stockholders of any stockholders'
meetings according to applicable law. If we liquidate, dissolve or wind-up our
business, either voluntarily or not, common stockholders will share equally in
the assets remaining after we pay our creditors and preferred stockholders.
 
     Transfer Agent and Registrar. Our transfer agent and registrar is American
Stock Transfer & Trust Company, New York, New York.
 
PREFERRED STOCK
 
     The following description of the terms of the preferred stock sets forth
certain general terms and provisions of the preferred stock we may offer. If we
offer preferred stock, the specific designations and rights will be described in
the prospectus supplement and a description will be filed with the SEC.
 
     Our board of directors can, without approval of our stockholders, issue one
or more series of preferred stock. The board can also determine the number of
shares of each series and the rights, preferences and limitations of each series
including the dividend rights, voting rights, conversion rights, redemption
rights and any liquidation preferences of any series of preferred stock, the
number of shares constituting each series and the terms and conditions of issue.
In some cases, the issuance of preferred stock could delay a change in control
of the Company and make it harder to remove present management. Under certain
circumstances, preferred stock could also restrict dividend payments to holders
of our common stock.
 
     The transfer agent, registrar, and dividend disbursement agent for a series
of preferred stock will be named in a prospectus supplement. The registrar for
shares of preferred stock will send notices to stockholders of any meetings at
which holders of the preferred stock have the right to elect directors or to
vote on any other matter.
 
                                       14
<PAGE>   16
 
                            DESCRIPTION OF WARRANTS
 
     We may issue warrants, including warrants to purchase debt securities,
preferred stock, common stock or other securities. We may issue warrants
independently or together with other securities that may be attached to or
separate from the warrants. The terms of warrants will be set forth in a
prospectus supplement which will describe, among other things, the designation
of the warrants, the securities into which the warrants are exercisable, the
exercise price, the aggregate number of warrants to be issued, the principal
amount of securities purchasable upon exercise of each warrant, the price or
prices at which each warrant will be issued, the procedures for exercising the
warrants, the date upon which the exercise of warrants will commence, and the
expiration date, and any other material terms of the warrants.
 
                                 LEGAL MATTERS
 
     Certain legal matters relating to the validity of the common stock, the
preferred stock, the debt securities and the warrants will be passed upon by
Porter & Hedges, L.L.P., Houston, Texas.
 
                                    EXPERTS
 
     The consolidated financial statements of the Company and subsidiaries as of
June 30, 1998 and 1997, and for each of the years in the three-year period ended
June 30, 1998, have been incorporated by reference in this prospectus in
reliance upon the report of KPMG Peat Marwick LLP, independent certified public
accountants, incorporated by reference herein, and upon the authority of said
firm as experts in accounting and auditing.
 
     The consolidated financial statements of Dawson Production Services, Inc.
and subsidiaries as of March 31, 1998 and 1997, and for each of the years in the
three-year period ended March 31, 1998, have been incorporated by reference in
this prospectus in reliance upon the report of KPMG Peat Marwick LLP,
independent certified public accountants, incorporated by reference herein, and
upon the authority of said firm as experts in accounting and auditing.
 
                                       15
<PAGE>   17
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     Set forth below is an estimate of the amount of fees and expenses to be
incurred in connection with the issuance and distribution of the securities
registered hereby, other than underwriting discounts and commissions.
 
<TABLE>
<S>                                                            <C>
Registration Fee Under Securities Act.......................   $139,000
Legal Fees..................................................     15,000
Accounting Fees.............................................      5,000
Printing and Engraving......................................     25,000
Miscellaneous Fees..........................................     16,000
                                                               --------
          Total.............................................   $200,000
                                                               ========
</TABLE>
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     Section 2-418 of the Maryland General Corporation Law provides that a
corporation may indemnify any director made a party to any proceeding against
judgments, penalties, fines, settlements and reasonable expenses, unless it is
established that (i) the act or omission of the director was material to the
matter giving rise to the proceeding and was committed in bad faith or was a
result of deliberate dishonesty, (ii) the director actually received an improper
personal benefit or (iii) in a criminal proceeding, the director had reasonable
cause to believe the act or omission was unlawful. A director may not be
indemnified in any proceeding charging improper personal benefit if the director
was adjudged to be liable on the basis that personal benefit was improperly
received and, in a derivative action, there shall not be indemnification if a
director has been adjudged liable to the corporation. A director or officer of a
corporation who has been successful in the defense of any proceeding shall be
indemnified against reasonable costs incurred in such defense. Indemnification
may not be made unless authorized for a specific proceeding after determination
by the board of directors, special legal counsel or the stockholders that
indemnification is permissible because the director has met the requisite
standard of conduct.
 
     Article Seventh of the Company's Amended and Restated Articles of
Incorporation, as amended (the "Charter"), provides that the Company shall
indemnify (i) its directors and officers, whether serving the Company or at its
request any other entity, to the full extent required or permitted by Maryland
law, including the advance of expenses under the procedures and to the full
extent permitted by law and (ii) other employees and agents to such extent as
shall be authorized by the Board of Directors or the Company's By-Laws and be
permitted by law. The foregoing rights of indemnification are not exclusive of
any other rights to which those seeking indemnification may be entitled. The
Board of Directors may take such action as is necessary to carry out these
indemnification provisions and is expressly empowered to adopt, approve and
amend from time to time such By-laws, resolutions or contracts implementing such
provisions or such further indemnification arrangements as may be permitted by
Maryland law. Furthermore, no director or officer of the Company shall be
personally liable to the Company or its stockholders for monetary damages for
breach of fiduciary duty as a director or an officer, except to the extent that
exculpation from liability is not permitted under Maryland law as in effect when
such breach occurred. No
 
                                      II-1
<PAGE>   18
 
amendment of the Charter or repeal of any of its provisions shall limit or
eliminate the limitations on liability provided to directors and officers with
respect to acts or omissions occurring prior to such amendment or repeal.
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
     (a) Exhibits
 
<TABLE>
<CAPTION>
      EXHIBIT NO.                                DESCRIPTION
      -----------                                -----------
<C>                      <S>
           4.1           -- Form of Senior Indenture.
           4.2           -- Form of Subordinated Indenture.
           5.1           -- Opinion of Porter & Hedges, L.L.P.
          12.1           -- Statement Regarding Computation of Ratios of Earnings to
                            Fixed Charges
          23.1           -- Consent of Porter & Hedges, L.L.P. (included in Exhibit
                            5.1)
          23.2           -- Consent of KPMG Peat Marwick LLP
          23.3           -- Consent of KPMG Peat Marwick LLP
          24.1           -- Power of Attorney (included on signature page)
         *25.1           -- Statement of Eligibility and Qualification under the
                            Trust Indenture Act of 1939 for Senior Debt.
         *25.2           -- Statement of Eligibility and Qualification under the
                            Trust Indenture Act of 1939 for Subordinated Debt.
</TABLE>
 
- -------------------------
 
* To be filed by amendment.
 
     (b) Financial Statement Schedules
 
     Schedules are omitted since the information required to be submitted has
been included in the Consolidated Financial Statements of Key Energy Group,
Inc., or the notes thereto, or the required information is not applicable.
 
ITEM 17. UNDERTAKINGS.
 
     The undersigned Registrant hereby undertakes:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this Registration Statement:
 
             (i) To include any prospectus required by section 10(a)(3) of the
        Securities Act of 1933;
 
             (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in this registration statement;
 
             (iii) To include any material information with respect to the plan
        of distribution not previously disclosed in this registration statement
        or any material change to such information in this registration
        statement; provided, however, that subparagraphs (i) and (ii) do not
        apply if the information required to be included in a post-effective
        amendment
 
                                      II-2
<PAGE>   19
 
by those paragraphs is contained in the periodic reports filed by the Registrant
pursuant to Section 13 or Section 15(d) of the Securities and Exchange Act of
1934 that are incorporated by reference in this registration statement.
 
          (2) That for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     herein, and the offering of such securities at that time shall be deemed to
     be the initial bona fide offering thereof.
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
     The undersigned Registrant hereby further undertakes that, for the purposes
of determining any liability under the Securities Act of 1933, each filing of
the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange of 1934 that is incorporated by reference in this
registration statement shall be deemed to be a new registration statement
relating to the securities offered herein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to officers, directors and controlling persons of the
Registrant pursuant to the provisions described under Item 15 of this
registration statement, or otherwise, the Registrant has been advised that in
the opinion of the Securities and Exchange Commission such indemnification is
against public policy as expressed in such Act and is, therefore, unenforceable.
In the event that a claim for indemnification against such liabilities (other
than the payment by the Registrant of expenses incurred or paid by a trustee,
officer or controlling person of the Registrant in the successful defense of any
action, suit or proceeding) is asserted by such trustee, officer or controlling
person in connection with the securities being registered, the Registrant will,
unless in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is public policy as expressed in such Act and will be
governed by the final adjudication of such issue.
 
     With respect to the Indentures referred to in Exhibits 4.1 and 4.2 of this
Registration Statement, the Registrant hereby undertakes to file an application
for the purpose of determining the eligibility of the trustee to act under
subsection (a) of section 310 of the Trust Indenture Act (the "TIA") in
accordance with the rules and regulations prescribed by the Securities and
Exchange Commission under section 305(b)(2) of the TIA.
 
                                      II-3
<PAGE>   20
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, as amended, Key
Energy Group, Inc. certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of East Brunswick, State of New Jersey on November
19, 1998.
 
                                            KEY ENERGY GROUP, INC.
 
                                            By:     /s/ FRANCIS D. JOHN
                                              ----------------------------------
                                                       Francis D. John,
                                                President and Chief Executive
                                                            Officer
 
     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement on Form S-3 has been signed below by the following
persons in the capacities and on the dates indicated; and each of the
undersigned officers and directors of Key Energy Group, Inc. hereby severally
constitutes and appoints Francis D. John and Jack D. Loftis, Jr., and each of
them, to sign for him, and in his name in the capacity indicated below, such
Registration Statement on Form S-3 and for the purpose of registering such
securities under the Securities Act of 1933, as amended, and any and all
amendments thereto, including without limitation any registration statements or
post-effective amendment thereof filed under and meeting the requirements of
Rule 462(b) under the Securities Act, hereby ratifying and confirming our
signatures as they may be signed by our attorneys to such Registration Statement
and any and all amendments thereto.
 
<TABLE>
<CAPTION>
                   SIGNATURES                                   TITLE                       DATE
                   ----------                                   -----                       ----
<C>                                                 <S>                               <C>
 
              /s/ FRANCIS D. JOHN                   President, Chief Executive        November 19, 1998
- ------------------------------------------------    Officer, and Director
                Francis D. John                     (Principal Executive Officer)
 
              /s/ WILLIAM D. MANLY                  Director                          November 19, 1998
- ------------------------------------------------
                William D. Manly
 
              /s/ MORTON WOLKOWITZ                  Director                          November 19, 1998
- ------------------------------------------------
                Morton Wolkowitz
 
             /s/ DAVID J. BREAZZANO                 Director                          November 19, 1998
- ------------------------------------------------
               David J. Breazzano
 
              /s/ KEVIN P. COLLINS                  Director                          November 19, 1998
- ------------------------------------------------
                Kevin P. Collins
</TABLE>
<PAGE>   21
 
<TABLE>
<CAPTION>
                   SIGNATURES                                   TITLE                       DATE
                   ----------                                   -----                       ----
<C>                                                 <S>                               <C>
 
             /s/ W. PHILLIP MARCUM                  Director                          November 19, 1998
- ------------------------------------------------
               W. Phillip Marcum
 
            /s/ STEPHEN E. MCGREGOR                 Executive Vice President,         November 19, 1998
- ------------------------------------------------    Chief Financial Officer and
              Stephen E. McGregor                   Treasurer (Principal Financial
                                                    Officer)
 
               /s/ DANNY R. EVATT                   Vice President of Financial       November 19, 1998
- ------------------------------------------------    Operations (Principal
                 Danny R. Evatt                     Accounting Officer)
</TABLE>
<PAGE>   22
 
                                    EXHIBITS
 
<TABLE>
<CAPTION>
      EXHIBIT NO.                                DESCRIPTION
      -----------                                -----------
<C>                      <S>
 
           4.1           -- Form of Senior Indenture.
           4.2           -- Form of Subordinated Indenture.
           5.1           -- Opinion of Porter & Hedges, L.L.P.
          12.1           -- Statement Regarding Computation of Ratios of Earnings to
                            Fixed Charges
          23.1           -- Consent of Porter & Hedges, L.L.P. (included in Exhibit
                            5.1)
          23.2           -- Consent of KPMG Peat Marwick LLP
          23.3           -- Consent of KPMG Peat Marwick LLP
          24.1           -- Power of Attorney (included on signature page)
         *25.1           -- Statement of Eligibility and Qualification under the
                            Trust Indenture Act of 1939 for Senior Debt.
         *25.2           -- Statement of Eligibility and Qualification under the
                            Trust Indenture Act of 1939 for Subordinated Debt.
</TABLE>
 
- -------------------------
 
* To be filed by amendment.

<PAGE>   1
                                                                     EXHIBIT 4.1
================================================================================




                             KEY ENERGY GROUP, INC.

                                      AND

                                   [TRUSTEE],

                                    TRUSTEE


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


                                   INDENTURE

                                  DATED AS OF

                         _______________________, 1998



                                DEBT SECURITIES
                                 (SENIOR DEBT)



================================================================================
<PAGE>   2
                             Key Energy Group, Inc.

           Reconciliation and tie between Trust Indenture Act of 1939
               and Indenture, dated as of _________________, 1998

                      =======================================


<TABLE>
<CAPTION>
Section of
Trust Indenture                                                                                  Section(s) of
Act of 1939                                                                                        Indenture
- -----------                                                                                        ---------
<S>      <C>                                                                                       <C>
Section  310  (a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        609
              (a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        609
              (a)(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (a)(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        608, 610
Section  311  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        613
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        613
              (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
Section  312  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        701, 702(a)
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        702(b)
              (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        702(c)
Section  313  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        703(a)
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        703(b)
              (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        703(c)
              (d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        703(d)
Section  314  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        704, 1005
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (c)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        103
              (c)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        103
              (c)(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        103
Section  315  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(a)
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        602
              (c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(b)
              (d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(c)
              (d)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(a)(1)
              (d)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(c)(2)
              (d)(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        601(c)(3)
              (e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        513
Section  316  (a)(1)(A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        502, 511
              (a)(1)(B)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        512
              (a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        Not Applicable
              (a)(last sentence) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        101
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        508
Section  317  (a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        503
              (a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        504
              (b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        1003
Section  318  (a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        108
</TABLE>

_____________________

Note:    This reconciliation and tie shall not, for any purpose, be deemed to
         be a part of the Indenture.
<PAGE>   3
                               TABLE OF CONTENTS

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RECITALS OF THE COMPANY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

                                                     ARTICLE ONE

                                 DEFINITIONS AND OTHER PROVISIONSOF GENERAL APPLICATION

SECTION 101.  Definitions.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Additional Amounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Affiliate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Agent Members  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Authenticating Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Authorized Newspaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Board of Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Board Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         Business Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Commission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Company  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         "Company Request" and "Company Order"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Conversion Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Corporate Trust Office . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Defaulted Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Depositary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Dollar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Event of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Exchange Rate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
         Indenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Interest Payment Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Judgment Currency  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Officers' Certificate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Opinion of Counsel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Original Issue Discount Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Outstanding  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
         Paying Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
         Person . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
         Place of Payment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
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                                                                                                                     ----
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         Predecessor Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
         Redemption Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Redemption Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Regular Record Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Required Currency  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Responsible Officer  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Security Custodian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Security Register  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Special Record Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Stated Maturity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Subsidiary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
         Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         Trust Indenture Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         United States  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         United States Alien  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         U.S. Government Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         Vice President . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         Wholly Owned Subsidiary  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
         Yield to Maturity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SECTION 102.  Incorporation by Reference of Trust Indenture Act.  . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SECTION 103.  Compliance Certificates and Opinions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SECTION 104.  Form of Documents Delivered to Trustee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SECTION 105.  Acts of Holders; Record Dates.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SECTION 106.  Notices, Etc., to Trustee and Company.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
SECTION 107.  Notice to Holders; Waiver.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
SECTION 108.  Conflict With Trust Indenture Act.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
SECTION 109.  Effect of Headings and Table of Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
SECTION 110.   Successors and Assigns.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
SECTION 111.  Separability Clause.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
SECTION 112.  Benefits of Indenture.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
SECTION 113.  Governing Law.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
SECTION 114.  Legal Holidays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
SECTION 115.  Corporate Obligation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12

                                                       ARTICLE TWO

                                                      SECURITY FORMS

SECTION 201.  Forms Generally.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
SECTION 202.  Form of Trustee's Certificate of Authentication.  . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
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SECTION 203.  Securities in Global Form.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13

                                                      ARTICLE THREE

                                                      THE SECURITIES

SECTION 301.  Amount Unlimited; Issuable in Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
SECTION 302.  Denominations.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
SECTION 303.  Execution, Authentication, Delivery and Dating. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
SECTION 304.  Temporary Securities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
SECTION 305.  Registration, Registration of Transfer and Exchange.  . . . . . . . . . . . . . . . . . . . . . . . . .  21
SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities. . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
SECTION 307.  Payment of Interest; Interest Rights Preserved. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
SECTION 308.  Persons Deemed Owners.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
SECTION 309.  Cancellation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
SECTION 310.  Computation of Interest.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
SECTION 311.  CUSIP Numbers.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24

                                                       ARTICLE FOUR

                                                SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
SECTION 402.  Application of Trust Money. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
SECTION 403.  Discharge of Liability on Securities of Any Series. . . . . . . . . . . . . . . . . . . . . . . . . . .  27
SECTION 404.  Reinstatement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

                                                       ARTICLE FIVE

                                                         REMEDIES

SECTION 501.  Events of Default.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
SECTION 502.  Acceleration of Maturity; Rescission and Annulment. . . . . . . . . . . . . . . . . . . . . . . . . . .  30
SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.  . . . . . . . . . . . . . . . . . . .  31
SECTION 504.  Trustee May File Proofs of Claim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or Coupons. . . . . . . . . . . . . . . . .  33
SECTION 506.  Application of Money Collected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
SECTION 507.  Limitation on Suits.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
SECTION 508.  Unconditional Right of Holders to Receive Principal Premium and Interest  . . . . . . . . . . . . . . .  34
SECTION 509.   Restoration of Rights and Remedies.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
SECTION 510.  Rights and Remedies Cumulative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
SECTION 511.  Delay or Omission Not Waiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
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SECTION 512.  Control by Holders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
SECTION 513.  Waiver of Past Defaults.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
SECTION 514.  Undertaking for Costs.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
SECTION 515.   Waiver of Stay or Extension Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

                                                       ARTICLE SIX

                                                       THE TRUSTEE

SECTION 601.  Certain Duties and Responsibilities.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
SECTION 602.  Notice of Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
SECTION 603.  Certain Rights of Trustee.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
SECTION 604.  Not Responsible for Recitals or Issuance of Securities. . . . . . . . . . . . . . . . . . . . . . . . .  39
SECTION 605.  May Hold Securities.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
SECTION 606.  Money Held in Trust.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
SECTION 607.  Compensation and Reimbursement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
SECTION 608.  Disqualification; Conflicting Interests.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
SECTION 609.  Corporate Trustee Required; Eligibility.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
SECTION 610.  Resignation and Removal; Appointment of Successor.  . . . . . . . . . . . . . . . . . . . . . . . . . .  41
SECTION 611.  Acceptance of Appointment by Successor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
SECTION 612.  Merger, Conversion, Consolidation or Succession to Business.  . . . . . . . . . . . . . . . . . . . . .  44
SECTION 613.  Preferential Collection of Claims Against Company.  . . . . . . . . . . . . . . . . . . . . . . . . . .  44
SECTION 614.  Appointment of Authenticating Agent.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

                                                      ARTICLE SEVEN

                                    HOLDER'S LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.  Company to Furnish Trustee Names and Addresses of Holders.  . . . . . . . . . . . . . . . . . . . . . .  46
SECTION 702.  Preservation of Information; Communications to Holders. . . . . . . . . . . . . . . . . . . . . . . . .  46
SECTION 703.  Reports by Trustee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
SECTION 704.  Reports by Company. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47

                                                      ARTICLE EIGHT

                                   CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms. . . . . . . . . . . . . . . . . . . . . . . . . .  48
SECTION 802.  Successor Person Substituted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
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                                                       ARTICLE NINE

                                                 SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders. . . . . . . . . . . . . . . . . . . . . . . . . . .  49
SECTION 902.  Supplemental Indentures With Consent of Holders.  . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
SECTION 903.  Execution of Supplemental Indentures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
SECTION 904.  Effect of Supplemental Indentures.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
SECTION 905.  Conformity With Trust Indenture Act.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
SECTION 906.  Reference in Securities to Supplemental Indentures. . . . . . . . . . . . . . . . . . . . . . . . . . .  51

                                                       ARTICLE TEN

                                                        COVENANTS

SECTION 1001.  Payment of Principal, Premium and Interest.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
SECTION 1002.  Maintenance of Office or Agency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
SECTION 1003.  Money for Securities Payments to be Held in Trust. . . . . . . . . . . . . . . . . . . . . . . . . . .  52
SECTION 1004.  Existence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
SECTION 1005.  Statement by Officers as to Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
SECTION 1006.  Waiver of Certain Covenants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
SECTION 1007.  Additional Amounts.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54

                                                      ARTICLE ELEVEN

                                                 REDEMPTION OF SECURITIES

SECTION 1101.  Applicability of Article.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
SECTION 1102.  Election to Redeem; Notice to Trustee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
SECTION 1103.  Selection by Trustee of Securities to be Redeemed. . . . . . . . . . . . . . . . . . . . . . . . . . .  56
SECTION 1104.  Notice of Redemption.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
SECTION 1105.  Deposit of Redemption Price. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
SECTION 1106.  Securities Payable on Redemption Date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
SECTION 1107.  Securities Redeemed in Part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
SECTION 1108.  Purchase of Securities.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58

                                                      ARTICLE TWELVE

                                                      SINKING FUNDS

SECTION 1201.  Applicability of Article.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
</TABLE>





                                       v
<PAGE>   8
<TABLE>
<CAPTION>
                                                                                                                     PAGE
                                                                                                                     ----
<S>            <C>                                                                                                     <C>
SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities. . . . . . . . . . . . . . . . . . . . . . . . .  58
SECTION 1203.  Redemption of Securities for Sinking Fund  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

                                                     ARTICLE THIRTEEN

                                            MEETINGS OF HOLDERS OF SECURITIES

SECTION 1301.  Purposes for Which Meetings May Be Called. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
SECTION 1302.  Call, Notice and Place of Meetings.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
SECTION 1303.  Persons Entitled to Vote at Meetings.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
SECTION 1304.  Quorum; Action.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
SECTION 1305.  Determination of Voting Rights; Conduct and Adjournment of Meetings. . . . . . . . . . . . . . . . . .  61
SECTION 1306.  Counting Votes and Recording Action of Meetings. . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
</TABLE>





                                       vi
<PAGE>   9
                 INDENTURE, dated as of _______________, 1998 between KEY
ENERGY GROUP, INC., a corporation duly organized and existing under the laws of
the State of Maryland (herein called the "Company"), having its principal
office at Two Tower Center, 10th Floor, East Brunswick, New Jersey 08816, and
[TRUSTEE], a national banking association, as Trustee (herein called the
"Trustee"), the office of the Trustee at which at the date hereof its corporate
trust business is principally administered being [TRUSTEE ADDRESS].

                            RECITALS OF THE COMPANY

                 The Company has duly authorized the execution and delivery of
this Indenture to provide for the issuance from time to time of its unsecured
debentures, notes or other evidences of indebtedness (herein called the
"Securities"), to be issued in one or more series as in this Indenture
provided.

                 This Indenture is subject to the provisions of the Trust
Indenture Act and the rules and regulations of the Commission promulgated
thereunder that are required to be part of this Indenture and, to the extent
applicable, shall be governed by such provisions.

                 All things necessary to make this Indenture a valid agreement
of the Company, in accordance with its terms, have been done.

                 NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                 For and in consideration of the premises and the purchase of
the Securities by the Holders thereof, it is mutually covenanted and agreed,
for the equal and proportionate benefit of all Holders of the Securities or of
series thereof, as follows:

                                  ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

SECTION 101.  Definitions.

                 For all purposes of this Indenture, except as otherwise
expressly provided or unless the context otherwise requires:

                 (1)      the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                 (2)      all accounting terms not otherwise defined herein
         have the meanings assigned to them in accordance with generally
         accepted accounting principles in the United States, and, except as
         otherwise herein expressly provided, the term "generally accepted
         accounting principles" with respect to any computation required or
         permitted hereunder shall mean such accounting principles as are
         generally accepted in the United States at the date of such
         computation; and
<PAGE>   10
                 (3)      the words "herein," "hereof" and "hereunder" and
         other words of similar import refer to this Indenture as a whole and
         not to any particular Article, Section or other subdivision.

                 Certain terms, used principally in Article Six, are defined in
Section 102.

                 "Act," when used with respect to any Holder, has the meaning
specified in Section 105.

                 "Additional Amounts" means any additional amounts that are
required by the express terms of a Security or by or pursuant to a Board
Resolution, under circumstances specified therein or pursuant thereto, to be
paid by the Company with respect to certain taxes, assessments or other
governmental charges imposed on certain Holders and that are owing to such
Holders.

                 "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person.  For the purposes of this
definition, "control" when used with respect to any specified Person means the
power to direct the management and policies of such Person, directly or
indirectly, whether through the ownership of voting securities, by contract or
otherwise; and the terms "controlling" and "controlled" have meanings
correlative to the foregoing.

                 "Agent Members" has the meaning specified in Section 203.

                 "Authenticating Agent" means any Person, which may include the
Company, authorized by the Trustee to act on behalf of the Trustee pursuant to
Section 614 to authenticate Securities of one or more series.

                 "Authorized Newspaper" means a newspaper, in the English
language or in an official language of the country of publication, customarily
published on each Business Day, whether or not published on Saturdays, Sundays
or holidays, and of general circulation in the place in connection with which
the term is used or in the financial community of such place.  Where successive
publications are required to be made in Authorized Newspapers, the successive
publications may be made in the same or in different newspapers in the same
city meeting the foregoing requirements and in each case on any Business Day.

                 "Board of Directors" means either the board of directors of
the Company or any duly authorized committee of that board.

                 "Board Resolution" means a copy of a resolution certified by
the Secretary or an Assistant Secretary of the Company to have been duly
adopted by the Board of Directors and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

                 "Business Day," when used with respect to any Place of
Payment, means each Monday, Tuesday, Wednesday, Thursday and Friday which is
not a day on which banking institutions in that Place of Payment are authorized
or obligated by law or executive order to close.





                                       2
<PAGE>   11
                 "Commission" means the Securities and Exchange Commission, as
from time to time constituted, created under the Securities Exchange Act of
1934, as amended, or, if at any time after the execution of this instrument
such Commission is not existing and performing the duties now assigned to it
under the Trust Indenture Act, then the body performing such duties at such
time.

                 "Company" means the Person named as the "Company" in the first
paragraph of this Indenture until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

                 "Company Request" and "Company Order" mean, respectively, a
written request or order signed in the name of the Company by its Chairman of
the Board, its President or a Vice President, and by its Treasurer, an
Assistant Treasurer, its Controller, an Assistant Controller, its Secretary or
an Assistant Secretary, and delivered to the Trustee.

                 "Conversion Event" has the meaning specified in Section 501.

                 "Corporate Trust Office" means the principal office of the
Trustee in [TRUSTEE'S CITY AND STATE] at which at any particular time its
corporate trust business shall be principally administered, which office at the
date hereof is that indicated in the introductory paragraph of this Indenture.

                 "Defaulted Interest" has the meaning specified in Section 307.

                 "Depositary" means, with respect to the Securities of any
series issuable or issued in whole or in part in global form, the Person
designated as Depositary by the Company pursuant to Section 301 with respect to
the Securities of such series until a successor Depositary shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"Depositary" shall mean or include each Person who is then a Depositary
hereunder, and if at any time there is more than one such Person, "Depositary"
as used with respect to the Securities of any series shall mean the Depositary
with respect to the Securities of that series.

                 "Dollar" or "$" means a dollar or other equivalent unit in
such coin or currency of the United States as at the time shall be legal tender
for the payment of public and private debts.

                 "Event of Default" has the meaning specified in Section 501.

                 "Exchange Rate" has the meaning specified in Section 501.

                 "Holder," when used with respect to any Security, means the
Person in whose name the Security is registered in the Security Register.

                 "Indenture" means this instrument as originally executed or as
it may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof
and shall include the terms of particular series of





                                       3
<PAGE>   12
Securities established as contemplated by Section 301 and the provisions of the
Trust Indenture Act that are deemed to be a part of and govern this instrument.

                 "interest," when used with respect to an Original Issue
Discount Security which by its terms bears interest only after Maturity, means
interest payable after Maturity.

                 "Interest Payment Date," when used with respect to any
Security, means the Stated Maturity of an installment of interest on such
Security.

                 "Judgment Currency" has the meaning specified in Section 506.

                 "Maturity," when used with respect to any Security, means the
date on which the principal of such Security or an installment of principal
becomes due and payable as therein or herein provided, whether at the Stated
Maturity or by declaration of acceleration, call for redemption or otherwise.

                 "Officers' Certificate" means a certificate signed by the
Chairman of the Board, the President or a Vice President, and by the Treasurer,
the Controller, the Secretary or an Assistant Treasurer, Assistant Controller
or Assistant Secretary, of the Company, and delivered to the Trustee, which
certificate shall comply with Section 103 hereof.

                 "Opinion of Counsel" means a written opinion of counsel, who
may be counsel for or an employee of the Company, rendered, if applicable, in
accordance with Section 314(c) of the Trust Indenture Act, which opinion shall
comply with Section 103 hereof.

                 "Original Issue Discount Security" means any Security which
provides for an amount less than the principal amount thereof to be due and
payable upon a declaration of acceleration of the Maturity thereof pursuant to
Section 502.

                 "Outstanding," when used with respect to Securities of a
series, means, as of the date of determination, all Securities of such series
theretofore authenticated and delivered under this Indenture, except:

                 (i)      Securities theretofore cancelled by the Trustee or
         delivered to the Trustee for cancellation;

                 (ii)     Securities for whose payment or redemption money in
         the necessary amount has been theretofore irrevocably deposited with
         the Trustee or any Paying Agent (other than the Company) in trust or
         set aside and segregated in trust by the Company (if the Company shall
         act as its own Paying Agent) for the Holders of such Securities;
         provided that, if such Securities are to be redeemed, notice of such
         redemption has been duly given pursuant to this Indenture or provision
         therefor satisfactory to the Trustee has been made; and

                 (iii)    Securities which have been paid pursuant to Section
         306 or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this





                                       4
<PAGE>   13
         Indenture, other than any such Securities in respect of which there
         shall have been presented to the Trustee proof satisfactory to it that
         such Securities are held by a bona fide purchaser in whose hands such
         Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, or whether a
quorum is present at a meeting of Holders of Securities, (a) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding for such purposes shall be the principal amount thereof that would
be due and payable as of the date of such determination upon acceleration of
the Maturity thereof pursuant to Section 502, (b) the principal amount of a
Security denominated in a foreign currency shall be the U.S. dollar equivalent,
determined by the Company on the date of original issuance of such Security, of
the principal amount (or, in the case of an Original Issue Discount Security,
the U.S. dollar equivalent, determined on the date of original issuance of such
Security, of the amount determined as provided in (a) above), of such Security
and (c) Securities owned by the Company or any other obligor upon the
Securities or any Affiliate of the Company or of such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon any such request,
demand, authorization, direction, notice, consent or waiver or upon any such
determination as to the presence of a quorum, only Securities which the Trustee
knows to be so owned shall be so disregarded.  Securities so owned which have
been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
other obligor upon the Securities or any Affiliate of the Company or of such
other obligor.

                 "Paying Agent" means any Person, which may include the
Company, authorized by the Company to pay the principal of (and premium, if
any) and interest on or Additional Amounts with respect to any one or more
series of Securities on behalf of the Company.

                 "Person" means any individual, corporation, partnership,
limited liability company, joint venture, association, joint-stock company,
trust, unincorporated organization or government or any agency or political
subdivision thereof, or any other entity of any kind.

                 "Place of Payment," when used with respect to the Securities
of any series, means the place or places where the principal of (and premium,
if any) and interest on and any Additional Amounts with respect to the
Securities of that series are payable as specified in accordance with Section
301 subject to the provisions of Section 1002.

                 "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that
evidenced by such particular Security; and, for the purposes of this
definition, any Security authenticated and delivered under Section 306 in
exchange for or in lieu of a mutilated, destroyed, lost or stolen Security
shall be deemed to evidence the same debt as the mutilated, destroyed, lost or
stolen Security.

                 "Redemption Date," when used with respect to any Security to
be redeemed, means the date fixed for such redemption by or pursuant to the
terms of the Security and this Indenture.





                                       5
<PAGE>   14
                 "Redemption Price," when used with respect to any Security to
be redeemed, means the price at which it is to be redeemed pursuant to the
terms of the Security and this Indenture.

                 "Regular Record Date" for the interest payable on any Interest
Payment Date on the Securities of any series means the date specified for that
purpose as contemplated by Section 301, or, if not so specified, the last day
of the calendar month preceding such Interest Payment Date if such Interest
Payment Date is the fifteenth day of the calendar month or the fifteenth day of
the calendar month preceding such Interest Payment Date if such Interest
Payment Date is the first day of a calendar month, whether or not such day
shall be a Business Day.

                 "Required Currency" has the meaning specified in Section 506.

                 "Responsible Officer," when used with respect to the Trustee,
means the chairman or any vice chairman of the board of directors, the chairman
or any vice chairman of the executive committee of the board of directors, the
president, any vice president, the secretary, any assistant secretary, any
trust officer or assistant trust officer or any other officer of the Trustee
customarily performing functions similar to those performed by any of the above
designated officers and also means, with respect to a particular corporate
trust matter, any other officer to whom such matter is referred because of his
knowledge of and familiarity with the particular subject.

                 "Securities" has the meaning stated in the first recital of
this Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

                 "Security Custodian" means, with respect to Securities of a
series issued in global form, the Trustee for Securities of such series, acting
in its capacity as custodian with respect to the Securities of such series, or
any successor entity thereto.

                 "Security Register" and "Security Registrar" have the
respective meanings specified in Section 305.

                 "Special Record Date" for the payment of any Defaulted
Interest on the Securities of any series means a date fixed by the Trustee
pursuant to Section 307.

                 "Stated Maturity," when used with respect to any Security or
any installment of principal thereof or interest thereon, means the date
specified in such Security as the fixed date on which the principal of such
Security or such installment of principal or interest is due and payable.

                 "Subsidiary" means a corporation more than 50% of the
outstanding voting stock of which is owned, directly or indirectly, by the
Company or by one or more other Subsidiaries, or by the Company and one or more
other Subsidiaries.  For the purposes of this definition, "voting stock" means
stock which ordinarily has voting power for the election of directors, whether
at all times or only so long as no senior class of stock has such voting power
by reason of any contingency.

                 "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of





                                       6
<PAGE>   15
this Indenture, and thereafter "Trustee" shall mean or include each Person who
is then a Trustee hereunder, and if at any time there is more than one such
Person, "Trustee" as used with respect to the Securities of any series shall
mean the Trustee with respect to Securities of that series.

                 "Trust Indenture Act" means the Trust Indenture Act of 1939 as
in force at the date as of which this instrument was executed, except as
provided in Section 905.

                 "United States" means the United States of America (including
the states and the District of Columbia) and its "possessions," which include
Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, Wake Island and the
Northern Mariana Islands.

                 "United States Alien" means any Person who, for United States
federal income tax purposes, is a foreign corporation, a non-resident alien
individual, a non-resident alien or foreign fiduciary of an estate or trust, or
a foreign partnership.

                 "U.S. Government Obligations" has the meaning specified in
Section 401.

                 "Vice President," when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president."

                 "Wholly Owned Subsidiary" means a corporation all the
outstanding voting stock (other than any directors' qualifying shares) of which
is owned, directly or indirectly, by the Company or by one or more other Wholly
Owned Subsidiaries, or by the Company and one or more other Wholly Owned
Subsidiaries.  For the purposes of this definition, "voting stock" means stock
which ordinarily has voting power for the election of directors, whether at all
times or only so long as no senior class of stock has such voting power by
reason of any contingency.

                 "Yield to Maturity," when used with respect to any Original
Issue Discount Security, means the yield to maturity, if any, set forth on the
face thereof.

SECTION 102.  Incorporation by Reference of Trust Indenture Act.

                 Whenever this Indenture refers to a provision of the Trust
Indenture Act, the provision is incorporated by reference in and made a part of
this Indenture.  The following Trust Indenture Act terms used in this Indenture
have the following meanings:

                 "Bankruptcy Act" means the Bankruptcy Act or Title 11 of the
United States Code.

                 "indenture securities" means the Securities.

                 "indenture security holder" means a Holder.

                 "indenture to be qualified" means this Indenture.





                                       7
<PAGE>   16
                 "indenture trustee" or "institutional trustee" means the
Trustee.

                 "obligor" on the indenture securities means the Company or any
other obligor on the Securities.

                 All terms used in this Indenture that are defined by the Trust
Indenture Act, defined by Trust Indenture Act reference to another statute or
defined by Commission rule under the Trust Indenture Act and not otherwise
defined herein have the meanings assigned to them therein.

SECTION 103.  Compliance Certificates and Opinions.

                 Except as otherwise expressly provided by this Indenture, upon
any application or request by the Company to the Trustee to take any action
under any provision of this Indenture, the Company shall furnish to the Trustee
an Officers' Certificate stating that all conditions precedent, if any
(including any covenants the compliance with which constitutes a condition
precedent provided for in this Indenture relating to the proposed action have
been complied with and an Opinion of Counsel stating that in the opinion of
such counsel all such conditions precedent, if any (including any covenants the
compliance with which constitutes a condition precedent) have been complied
with, except that in the case of any such application or request as to which
the furnishing of such documents is specifically required by any provision of
this Indenture relating to such particular application or request, no
additional certificate or opinion need be furnished.

                 Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include

                 (1)      a statement that each Person signing such certificate
         or opinion has read such covenant or condition and the definitions
         herein relating thereto;

                 (2)      a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                 (3)      a statement that, in the opinion of each such Person,
         such Person has made such examination or investigation as is necessary
         to enable such Person to express an informed opinion as to whether or
         not such covenant or condition has been complied with; and

                 (4)      a statement as to whether, in the opinion of each
         such Person, such condition or covenant has been complied with.

SECTION 104.  Form of Documents Delivered to Trustee.

                 In any case where several matters are required to be certified
by, or covered by an opinion of, any specified Person, it is not necessary that
all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one





                                       8
<PAGE>   17
document, but one such Person may certify or give an opinion with respect to
some matters and one or more other such Persons as to other matters, and any
such Person may certify or give an opinion as to such matters in one or several
documents.

                 Any certificate or opinion of an officer of the Company may be
based, insofar as it relates to legal matters, upon a certificate or opinion
of, or representations by, counsel, unless such officer knows, or in the
exercise of reasonable care should know, that the certificate or opinion or
representations with respect to the matters upon which his certificate or
opinion is based are erroneous.  Any such certificate or Opinion of Counsel may
be based, insofar as it relates to factual matters, upon a certificate or
opinion of, or representations by, an officer or officers of the Company
stating that the information with respect to such factual matters is in the
possession of the Company, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

                 Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated
and form one instrument.

SECTION 105.  Acts of Holders; Record Dates.

         (a)     Any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or taken
by Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent
duly appointed in writing.  Except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments or record
thereof or both are delivered to the Trustee and, where it is hereby expressly
required, to the Company.  Such instrument or instruments and any such record
(and the action embodied therein and evidenced thereby) are herein sometimes
referred to as the "Act" of the Holders signing such instrument or instruments
and so voting at any such meeting.  Proof of execution of any such instrument
or of a writing appointing any such agent, or the holding of any Person of a
Security, shall be sufficient for any purpose of this Indenture and (subject to
Section 601) conclusive in favor of the Trustee and the Company, if made in the
manner provided in this Section.  The record of any meeting of Holders of
Securities shall be proved in the manner provided in Section 1306.

                 The Company may set in advance a record date for purposes of
determining the identity of Holders of Securities entitled to vote or consent
to any action by vote or consent authorized or permitted under this Indenture.
If a record date is fixed, those Persons who were Holders of Outstanding
Securities at such record date (or their duly designated proxies), and only
those Persons, shall be entitled with respect to such Securities to take such
action by vote or consent or to revoke any vote or consent previously given,
whether or not such Persons continue to be Holders after such record date.
Promptly after any record date is set pursuant to this paragraph, the Company,
at its own expense, shall cause notice thereof to be given to the Trustee in
writing in the manner provided in Section 106 and to the relevant Holders as
set forth in Section 107.





                                       9
<PAGE>   18
         (b)     The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof.  Where
such execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his authority.  The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved
in any other manner which the Trustee deems sufficient.

         (c)     The principal amount and serial numbers of Securities held by
any Person, and the date of holding the same, shall be proved by the Security
Register.

         (d)     Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security and the Holder of every Security issued upon
the registration of transfer thereof or in exchange therefor or in lieu thereof
in respect of anything done, omitted or suffered to be done by the Trustee or
the Company in reliance thereon, whether or not notation of such action is made
upon such Security.  Any Holder or subsequent Holder may revoke the request,
demand, authorization, direction, notice, consent or other Act as to his
Security or portion of his Security; provided, however, that such revocation
shall be effective only if the Trustee receives the notice of revocation before
the date the Act becomes effective.

SECTION 106.  Notices, Etc., to Trustee and Company.

                 Any request, demand, authorization, direction, notice,
consent, waiver or Act of Holders or other document provided or permitted by
this Indenture to be made upon, given or furnished to, or filed with,

                 (1)      the Trustee by any Holder or by the Company shall be
         sufficient for every purpose hereunder if made, given, furnished or
         filed in writing to or with the Trustee at its Corporate Trust Office,
         Attention: Corporate Trust Administration, or

                 (2)      the Company by the Trustee or by any Holder shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if in writing and mailed, first-class postage
         prepaid, to the Company addressed to it at the address of its
         principal office specified in the first paragraph of this Indenture or
         at any other address previously furnished in writing to the Trustee by
         the Company, Attention: Corporate Secretary.

SECTION 107.  Notice to Holders; Waiver.

                 Where this Indenture provides for notice to Holders of
Securities of any event, such notice shall be sufficiently given (unless
otherwise herein expressly provided) if in writing and mailed, first-class
postage prepaid, to each Holder affected by such event, at the address of such
Holder as it appears in the Security Register, not later than the latest date,
and not earlier than the earliest date, prescribed for the giving of such
notice.





                                       10
<PAGE>   19
                 In case by reason of the suspension of regular mail service,
or by reason of any other cause it shall be impracticable to give such notice
to Holders of Securities by mail, then such notification as shall be made with
the approval of the Trustee shall constitute a sufficient notification for
every purpose hereunder.  In any case in which notice to Holders of Securities
is given by mail, neither the failure to mail such notice, nor any defect in
any notice so mailed, to any particular Holder of a Security, shall affect the
sufficiency of such notice with respect to other Holders of Securities.

                 Where this Indenture provides for notice in any manner, such
notice may be waived in writing by the Person entitled to receive such notice,
either before or after the event, and such waiver shall be the equivalent of
such notice.  Waivers of notice by Holders shall be filed with the Trustee, but
such filing shall not be a condition precedent to the validity of any action
taken in reliance upon such waiver.

SECTION 108.  Conflict With Trust Indenture Act.

                 If any provision hereof limits, qualifies or conflicts with
any provision of the Trust Indenture Act or another provision hereof which is
required to be included in this Indenture by any of the provisions of the Trust
Indenture Act, such provision of the Trust Indenture Act shall control.  If any
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act which may be so modified or excluded, the former provision shall
be deemed to apply to this Indenture as so modified or to be excluded.

SECTION 109.  Effect of Headings and Table of Contents.

                 The Article and Section headings herein and the Table of
Contents are for convenience only and shall not affect the construction hereof.

SECTION 110.   Successors and Assigns.

                 All covenants and agreements in this Indenture by the Company
shall bind its successors and assigns, whether so expressed or not.

SECTION 111.  Separability Clause.

                 In case any provision in this Indenture or in the Securities
shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

SECTION 112.  Benefits of Indenture.

                 Nothing in this Indenture or in the Securities, express or
implied, shall give to any Person, other than the parties hereto and their
successors hereunder, any Authenticating Agent, Paying Agent and Security
Registrar, and the Holders, any benefit or any legal or equitable right, remedy
or claim under this Indenture.





                                       11
<PAGE>   20
SECTION 113.  Governing Law.

                 This Indenture and the Securities shall be governed by and
construed in accordance with the laws of the State of New York, but without
giving effect to applicable principles of conflicts of law to the extent the
application of the laws of another jurisdiction would be required thereby.

SECTION 114.  Legal Holidays.

                 In any case where any Interest Payment Date, Redemption Date
or Stated Maturity of any Security shall not be a Business Day at any Place of
Payment, then (notwithstanding any other provision of this Indenture or of the
Securities) payment of principal and interest (and premium and Additional
Amounts, if any) need not be made at such Place of Payment on such date, but
may be made on the next succeeding Business Day at such Place of Payment with
the same force and effect as if made on the Interest Payment Date or Redemption
Date, or at the Stated Maturity, provided that no interest shall accrue with
respect to such payment for the period from and after such Interest Payment
Date, Redemption Date or Stated Maturity, as the case may be.

SECTION 115.  Corporate Obligation.

                 No recourse may be taken, directly or indirectly, against any
incorporator, subscriber to the capital stock, stockholder, officer, director
or employee of the Company or the Trustee or of any predecessor or successor of
the Company or the Trustee with respect to the Company's obligations on the
Securities or the obligations of the Company or the Trustee under this
Indenture or any certificate or other writing delivered in connection herewith.


                                  ARTICLE TWO

                                 SECURITY FORMS

SECTION 201.  Forms Generally.

                 The Securities of each series shall be in fully registered
form and in substantially such form or forms (including temporary or permanent
global form) as shall be established by or pursuant to a Board Resolution or in
one or more indentures supplemental hereto, in each case with such appropriate
insertions, omissions, substitutions and other variations as are required or
permitted by this Indenture and may have such letters, numbers or other marks
of identification and such legends or endorsements placed thereon as may be
required to comply with the rules of any securities exchange or as may,
consistently herewith, be determined by the officers executing such Securities,
as evidenced by their execution of the Securities.  If temporary Securities of
any series are issued in global form as permitted by Section 304, the form
thereof shall be established as provided in the preceding sentence.  A copy of
the Board Resolution establishing the form or forms of Securities of any series
(or any such temporary global Security) shall be certified by the Secretary or
an Assistant Secretary of the Company and delivered to the Trustee at or prior
to the delivery of the Company





                                       12
<PAGE>   21
Order contemplated by Section 303 for the authentication and delivery of such
Securities (or any such temporary global Security).

                 The definitive Securities shall be printed, lithographed or
engraved on steel engraved borders or may be produced in any other manner, all
as determined by the officers executing such Securities, as evidenced by their
execution thereof.

SECTION 202.  Form of Trustee's Certificate of Authentication.

                 The Trustee's certificate of authentication shall be in
substantially the following form:

                 "This is one of the Securities of the series designated
therein referred to in the within-mentioned Indenture.

                                        [_____________________________________],
                                        as Trustee

                                        By____________________________________
                                                Authorized Signatory."

SECTION 203.  Securities in Global Form.

                 If Securities of a series are issuable in global form, as
contemplated by Section 301, then, notwithstanding clause (10) of Section 301
and the provisions of Section 302, any such Security shall represent such of
the Outstanding Securities of such series as shall be specified therein and may
provide that it shall represent the aggregate amount of Outstanding Securities
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities represented thereby may from time to time be reduced to reflect
exchanges.  Any endorsement of a Security in global form to reflect the amount,
or any increase or decrease in the amount, of Outstanding Securities
represented thereby shall be made by the Trustee in such manner and upon
instructions given by such Person or Persons as shall be specified in such
Security or in a Company Order to be delivered to the Trustee pursuant to
Section 303 or Section 304.  Subject to the provisions of Section 303 and, if
applicable, Section 304, the Trustee shall deliver and redeliver any Security
in permanent global form in the manner and upon instructions given by the
Person or Persons specified in such Security or in the applicable Company
Order.  With respect to the Securities of any series that are represented by a
Security in global form, the Company authorizes the execution and delivery by
the Trustee of a letter of representations or other similar agreement or
instrument in the form customarily provided for by the Depositary appointed
with respect to such global Security.  Any Security in global form may be
deposited with the Depositary or its nominee, or may remain in the custody of
the Security Custodian therefor pursuant to a FAST Balance Certificate
Agreement or similar agreement between the Trustee and the Depositary.  If a
Company Order pursuant to Section 303 or 304 has been, or simultaneously is,
delivered, any instructions by the Company with respect to endorsement or
delivery or redelivery of a Security in global form shall be in writing but
need not comply with Section 103 and need not be accompanied by an Opinion of
Counsel.





                                       13
<PAGE>   22
                 Members of, or participants in, the Depositary ("Agent
Members") shall have no rights under this Indenture with respect to any
Security issued in global form held on their behalf by the Depositary, or the
Security Custodian as its custodian, or under such global Security, and the
Depositary may be treated by the Company, the Security Custodian and any agent
of the Company or the Trustee as the absolute owner of such global Security for
all purposes whatsoever.  Notwithstanding the foregoing, (i) the registered
holder of a Security of any series issued in global form may grant proxies and
otherwise authorize any Person, including Agent Members and Persons that may
hold interests through Agent Members, to take any action that a Holder of such
series is entitled to take under this Indenture or the Securities of such
series and (ii) nothing herein shall prevent the Company, the Security
Custodian or any agent of the Company or the Security Custodian, from giving
effect to any written certification, proxy or other authorization furnished by
the Depositary or shall impair, as between the Depositary and its Agent
Members, the operation of customary practices governing the exercise of the
rights of a beneficial owner of any Security.

                 Notwithstanding Section 305, except as otherwise specified as
contemplated by Section 301, any permanent global Security shall be
exchangeable only as provided in this paragraph.  If the beneficial owners of
interests in a permanent global Security are entitled to exchange such interest
for Securities of such series and of like tenor and principal amount of another
authorized form and denomination, as specified as contemplated by Section 301,
then without unnecessary delay but in any event not later than the earliest
date on which such interests may be so exchanged, the Company shall deliver to
the Trustee definitive Securities of that series in an aggregate principal
amount equal to the principal amount of such permanent global Security,
executed by the Company.  On or after the earliest date on which such interests
may be so exchanged, such permanent global Security shall be surrendered from
time to time in accordance with instructions given to the Trustee and the
Depositary (which instructions shall be in writing but need not comply with
Section 103 or be accompanied by an Opinion of Counsel) by the Depositary or
such other depositary as shall be specified in the Company Order with respect
thereto to the Trustee, as the Company's agent for such purpose, to be
exchanged, in whole or in part, for definitive Securities of the same series
without charge and the Trustee shall authenticate and deliver, in exchange for
each portion of such permanent global Security, a like aggregate principal
amount of other definitive Securities of the same series of authorized
denominations and of like tenor as the portion of such permanent global
Security to be exchanged; provided, however, that no such exchanges may occur
during a period beginning at the opening of business 15 days before any
selection of Securities of that series is to be redeemed and ending on the
relevant Redemption Date.  Promptly following any such exchange in part, such
permanent global Security marked to evidence the partial exchange shall be
returned by the Trustee to the Depositary or such other depositary referred to
above in accordance with the instructions of the Company referred to above.  If
a definitive Security is issued in exchange for any portion of a permanent
global Security after the close of business at the office or agency where such
exchange occurs on (i) any Regular Record Date and before the opening of
business at such office or agency on the relevant Interest Payment Date, or
(ii) any Special Record Date and before the opening of business at such office
or agency on the related proposed date for payment of Defaulted Interest,
interest or Defaulted Interest, as the case may be, will not be payable on such
Interest Payment Date or proposed date for payment, as the case may be, in
respect of such Security, but will be payable on such Interest Payment Date or
proposed





                                       14
<PAGE>   23
for payment, as the case may be, only to the Person to whom interest in respect
of such portion of such permanent global Security is payable in accordance with
the provisions of this Indenture.

                 Notwithstanding Section 305, except as otherwise specified as
contemplated by Section 301, transfers of a Security issued in global form
shall be limited to transfers of such global Security in whole, but not in
part, to the Depositary, its successors or their respective nominees.
Interests of beneficial owners in a Security issued in global form may be
transferred in accordance with the rules and procedures of the Depositary.
Securities of any series shall be transferred to all beneficial owners of a
global Security of such series in exchange for their beneficial interests in
that global Security if, and only if, either (1) the Depositary notifies the
Company that it is unwilling or unable to continue as Depositary for the global
Security of such series and a successor Depositary is not appointed by the
Company within 90 days of such notice, (2) an Event of Default has occurred
with respect to such series and is continuing and the Security Registrar has
received a request from the Depositary or the Trustee to issue Securities of
such series in lieu of all or a portion of that global Security (in which case
the Company shall deliver Securities of such series within 30 days of such
request) or (3) the Company determines not to have the Securities of such
series represented by a global Security.

                 In connection with any transfer of a portion of the beneficial
interest in a global Security of any series to beneficial owners pursuant to
this Section 203, the Security Registrar shall reflect on its books and records
the date and a decrease in the principal amount of the global Security of that
series in an amount equal to the principal amount of the beneficial interest in
the global Security of that series to be transferred, and the Company shall
execute, and the Trustee upon receipt of a Company Order for the authentication
and delivery of Securities of that series shall authenticate and deliver, one
or more Securities of the same series of like tenor and amount.

                 In connection with the transfer of all the beneficial
interests in a global Security of any series to beneficial owners pursuant to
this Section 203, the global Security shall be deemed to be surrendered to the
Trustee for cancellation, and the Company shall execute, and the Trustee shall
authenticate and deliver, to each beneficial owner identified by the Depositary
in exchange for its beneficial interest in the global Security, an equal
aggregate principal amount of Securities of that series of authorized
denominations.

                 Neither the Company nor the Trustee will have any
responsibility or liability for any aspect of the records relating to, or
payments made on account of, Securities of any series by the Depositary, or for
maintaining, supervising or reviewing any records of the Depositary relating to
such Securities.  Neither the Company nor the Trustee shall be liable for any
delay by the related global Security Holder or the Depositary in identifying
the beneficial owners, and each such Person may conclusively rely on, and shall
be protected in relying on, instructions from such global Security Holder or
the Depositary for all purposes (including with respect to the registration and
delivery, and the respective principal amounts, of the Securities to be
issued).

                 The provisions of the last sentence of Section 303 shall apply
to any Security in global form if such Security was never issued and sold by
the Company and the Company delivers to the Trustee the Security in global form
together with written instructions (which need not comply





                                       15
<PAGE>   24
with Section 103 and need not be accompanied by an Opinion of Counsel) with
regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

                 Notwithstanding the provisions of Sections 201 and 307, unless
otherwise specified as contemplated by Section 301, payment of principal of
(and premium, if any) and interest on and any Additional Amounts with respect
to any Security in permanent global form shall be made to the Person or Persons
specified therein.

                 Notwithstanding the provisions of Section 308 and except as
provided in the preceding paragraph, the Company, the Trustee and any agent of
the Company or of the Trustee shall treat a Person as the Holder of such
principal amount of Outstanding Securities represented by a global Security as
shall be specified in a written statement, if any, of the Holder of such global
Security, which is produced to the Security Registrar by such Holder.

                 Global Securities may be issued in either temporary or
permanent form.  Permanent global Securities will be issued in definitive form.

                                 ARTICLE THREE

                                 THE SECURITIES

SECTION 301.  Amount Unlimited; Issuable in Series.

                 The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is unlimited.

                 The Securities may be issued in one or more series.  There
shall be established in or pursuant to a Board Resolution, and set forth in an
Officers' Certificate, or established in one or more indentures supplemental
hereto, prior to the issuance of Securities of any series,

                 (1)      the title of the Securities of the series (which
         shall distinguish the Securities of the series from all other
         Securities);

                 (2)      any limit upon the aggregate principal amount of the
         Securities of the series which may be authenticated and delivered
         under this Indenture (except for Securities authenticated and
         delivered upon registration of transfer of, or in exchange for, or in
         lieu of, other Securities of the series pursuant to Section 304, 305,
         306, 906 or 1107);

                 (3)      whether any Securities of the series are to be
         issuable initially in temporary global form and whether any Securities
         of the series are to be issuable in permanent global form, and, if so,
         whether beneficial owners of interests in any such global Security may
         exchange such interests for Securities of such series and of like
         tenor of any authorized form and denomination and the circumstances
         under which any such exchanges may occur, if





                                       16
<PAGE>   25
         other than in the manner provided in Section 203, and the Depositary
         for any global Security or Securities of such series;

                 (4)      the manner in which any interest payable on a
         temporary global Security on any Interest Payment Date will be paid if
         other than in the manner provided in Section 304;

                 (5)      the date or dates on which the principal of (and
         premium, if any, on) the Securities of the series is payable or the
         method of determination thereof;

                 (6)      the rate or rates, or the method of determination
         thereof, at which the Securities of the series shall bear interest, if
         any, whether and under what circumstances Additional Amounts with
         respect to such Securities shall be payable, the date or dates from
         which such interest shall accrue, the Interest Payment Dates on which
         such interest shall be payable and, if other than as set forth in
         Section 101, the Regular Record Date for the interest payable on any
         Securities on any Interest Payment Date;

                 (7)      the place or places where, subject to the provisions
         of Section 1002, the principal of (and premium, if any), any interest
         on and any Additional Amounts with respect to the Securities of the
         series shall be payable;

                 (8)      the period or periods within which, the price or
         prices (whether denominated in cash, securities or otherwise) at which
         and the terms and conditions upon which Securities of the series may
         be redeemed, in whole or in part, at the option of the Company, if the
         Company is to have that option, and the manner in which the Company
         must exercise any such option if different from those set forth
         herein;

                 (9)      the obligation, if any, of the Company to redeem or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the
         period or periods within which, the price or prices (whether
         denominated in cash, securities or otherwise) at which and the terms
         and conditions upon which Securities of the series shall be redeemed
         or purchased in whole or in part pursuant to such obligation;

                 (10)     the denomination in which any Securities of that
         series shall be issuable, if other than denominations of $1,000 and
         any integral multiple thereof;

                 (11)     the currency or currencies (including composite
         currencies) if other than Dollars, or the form, including equity
         securities, other debt securities (including Securities), warrants or
         any other securities or property of the Company or any other Person,
         in which payment of the principal of (and premium, if any), any
         interest on and any Additional Amounts with respect to the Securities
         of the series shall be payable;

                 (12)     if the principal of (and premium, if any) or interest
         on or any Additional Amounts with Respect to the Securities of the
         series are to be payable, at the election of the Company or a Holder
         thereof, in a currency or currencies (including composite currencies)
         other than that in which the Securities are stated to be payable, the
         currency or currencies




                                      17
<PAGE>   26
         (including composite currencies) in which payment of the principal of
         (and premium, if any) and interest on, and any Additional Amounts with
         respect to, Securities of such series as to which such election is
         made shall be payable, and the periods within which and the terms and
         conditions upon which such election is to be made;

                 (13)     if the amount of payments of principal of (and
         premium, if any), any interest on and any Additional Amounts with
         respect to the Securities of the series may be determined with
         reference to any commodities, currencies or indices, values, rates or
         prices or any other index or formula, the manner in which such amounts
         shall be determined;

                 (14)     if other than the entire principal amount thereof,
         the portion of the principal amount of Securities of the series which
         shall be payable upon declaration of acceleration of the Maturity
         thereof pursuant to Section 502;

                 (15)     any additional means of satisfaction and discharge of
         this Indenture with respect to Securities of the series pursuant to
         Section 401, any additional conditions to discharge pursuant to
         Section 401 or 403 and the application, if any, of Section 403;

                 (16)     any deletions or modifications of or additions to the
         definitions set forth in Section 101, the Events of Default set forth
         in Section 501 or covenants of the Company set forth in Article Ten
         pertaining to the Securities of the series;

                 (17)     if the Securities of the series are to be convertible
         into or exchangeable for equity securities, other debt securities
         (including Securities), warrants or any other securities or property
         of the Company or any other Person, at the option of the Company or
         the Holder or upon the occurrence of any condition or event, the terms
         and conditions for such conversion or exchange; and

                 (18)     any other terms of the series (which terms shall not
         be inconsistent with the provisions of this Indenture).

                 All Securities of any one series shall be substantially
identical except as to denomination and except as may otherwise be provided in
or pursuant to the Board Resolution referred to above and (subject to Section
303) set forth, or determined in the manner provided, in the Officers'
Certificate referred to above or in any such indenture supplemental hereto.

                 At the option of the Company, interest on the Securities of
any series that bears interest may be paid by mailing a check to the address of
any Holder as such address shall appear in the Security Register.

                 If any of the terms of the series are established by action
taken pursuant to a Board Resolution, a copy of an appropriate record of such
action together with such Board Resolution shall be certified by the Secretary
or an Assistant Secretary of the Company and delivered to the Trustee at or
prior to the delivery of the Officers' Certificate setting forth the terms of
the series.




                                      18
<PAGE>   27
SECTION 302.  Denominations.

                 The Securities of each series shall be issuable in such
denominations as shall be specified as contemplated by Section 301.  In the
absence of any such provisions with respect to the Securities of any series,
the Securities of such series denominated in Dollars shall be issuable in
denominations of $1,000 and any integral multiple thereof.  Unless otherwise
provided as contemplated by Section 301 with respect to any series of
Securities, any Securities of a series denominated in a currency other than
Dollars shall be issuable in denominations that are the equivalent, as
determined by the Company by reference to the noon buying rate in The City of
New York for cable transfers for such currency, as such rate is reported or
otherwise made available by the Federal Reserve Bank of New York, on the
applicable issue date for such Securities, of $1,000 and any integral multiple
thereof.

         SECTION 303.  Execution, Authentication, Delivery and Dating.

                 The Securities shall be executed on behalf of the Company by
its Chairman of the Board, its President, its Treasurer or one of its Vice
Presidents, under its corporate seal reproduced thereon or affixed thereto
attested by its Secretary or one of its Assistant Secretaries.  The signature
of any of these officers on the Securities may be manual or facsimile.

                 Securities bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased
to hold such offices prior to the authentication and delivery of such
Securities or did not hold such offices at the date of such Securities.

                 At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Securities of any series
executed by the Company to the Trustee for authentication, together with a
Company Order for the authentication and delivery of such Securities, and the
Trustee in accordance with the Company Order shall authenticate and deliver
such Securities as in this Indenture provided and not otherwise.

                 If the form or terms of the Securities of the series have been
established in or pursuant to one or more Board Resolutions or any other method
permitted by Sections 201 and 301, in authenticating such Securities, and
accepting the additional responsibilities under this Indenture in relation to
such Securities, the Trustee shall be entitled to receive, and (subject to
Section 601) shall be fully protected in relying upon, an Opinion of Counsel
stating,

                 (a)      if the form of such Securities has been established
         by or pursuant to Board Resolution as permitted by Section 201, that
         such form has been established in conformity with the provisions of
         this Indenture;

                 (b)      if the terms of such Securities have been established
         by or pursuant to Board Resolution as permitted by Section 301, that
         such terms have been established in conformity with the provisions of
         this Indenture; and




                                      19
<PAGE>   28
                 (c)      that such Securities, when authenticated and
         delivered by the Trustee and issued by the Company in the manner and
         subject to any conditions specified in such Opinion of Counsel, will
         constitute legal, valid and binding obligations of the Company,
         enforceable in accordance with their terms, except as such enforcement
         is subject to the effect of (i) bankruptcy, insolvency, fraudulent
         conveyance, reorganization or other laws relating to or affecting
         creditors' rights and (ii) general principles of equity (regardless of
         whether such enforcement is considered in a proceeding in equity or at
         law).

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

                 Each Security shall be dated the date of its authentication.

                 No Security shall be entitled to any benefit under this
Indenture or be valid or obligatory for any purpose unless there appears on
such Security, a certificate of authentication substantially in the form
provided for herein executed by the Trustee by manual signature, and such
certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder.  Notwithstanding the foregoing, if any Security shall have been
authenticated and delivered hereunder but never issued and sold by the Company,
and the Company shall deliver such Security to the Trustee for cancellation as
provided in Section 309 together with a written statement (which need not
comply with Section 103 and need not be accompanied by an Opinion of Counsel)
stating that such Security has never been issued and sold by the Company, for
all purposes of this Indenture such Security shall be deemed never to have been
authenticated and delivered hereunder and shall never be entitled to the
benefits of this Indenture.

SECTION 304.  Temporary Securities.

                 Pending the preparation of definitive Securities of any
series, the Company may execute, and upon Company Order the Trustee shall
authenticate and deliver, temporary Securities which are printed, lithographed,
typewritten, mimeographed or otherwise produced, in any authorized
denomination, substantially of the tenor of the definitive Securities in lieu
of which they are issued, in registered form and with such appropriate
insertions, omissions, substitutions and other variations as the officers of
the Company executing such Securities may determine, as evidenced by their
execution of such Securities.

                 Except in the case of temporary Securities in global form
(which shall be exchanged in accordance with the provisions of the following
paragraphs), if temporary Securities of any series are issued, the Company will
cause definitive Securities of that series to be prepared without unreasonable
delay.  After the preparation of definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company in a Place of Payment for that
series, without charge to the Holder.  Upon surrender for cancellation of any
one or more temporary Securities of any series, the Company shall execute and
the Trustee shall




                                      20
<PAGE>   29
authenticate and deliver in exchange therefor a like principal amount of
definitive Securities of the same series of authorized denominations.  Until so
exchanged the temporary Securities of any series shall in all respects be
entitled to the same benefits under this Indenture as definitive Securities of
such series.

                 All Outstanding temporary Securities of any series shall in
all respects be entitled to the same benefits under this Indenture as
definitive Securities of the same series and of like tenor authenticated and
delivered hereunder.

SECTION 305.  Registration, Registration of Transfer and Exchange.

                 The Company shall cause to be kept for each series of
Securities at one of the offices or agencies maintained pursuant to Section
1002 a register (the register maintained in such office and in any other office
or agency of the Company in a Place of Payment being herein sometimes
collectively referred to as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Securities and of transfers of Securities of such series.  The
Trustee is hereby initially appointed "Security Registrar" for the purpose of
registering Securities and transfers of Securities as herein provided.

                 Except as set forth in Section 203 or as may be provided
pursuant to Section 301, upon surrender for registration of transfer of any
Security of any series at the office or agency in a Place of Payment for that
series, the Company shall execute, and the Trustee shall authenticate and
deliver, in the name of the designated transferee or transferees, one or more
new Securities of the same series and of like tenor, of any authorized
denominations and of a like aggregate principal amount.

                 At the option of the Holder, Securities of any series may be
exchanged for other Securities of the same series and of like tenor, of any
authorized denominations and of a like aggregate principal amount, upon
surrender of the Securities to be exchanged at such office or agency.  Whenever
any Securities are so surrendered for exchange, the Company shall execute, and
the Trustee shall authenticate and deliver, the Securities which the Holder
making the exchange is entitled to receive.

                 All Securities issued upon any registration of transfer or
exchange of Securities shall be the valid obligations of the Company,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Securities surrendered upon such registration of transfer or
exchange.

                 Every Security presented or surrendered for registration of
transfer or for exchange shall (if so required by the Company or the Trustee)
be duly endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company and the Security Registrar duly executed, by the
Holder thereof or his attorney duly authorized in writing.

                 No service charge shall be made for any registration of
transfer or exchange of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be
imposed in connection with any registration of transfer or




                                      21
<PAGE>   30
exchange of Securities, other than exchange pursuant to Section 304, 906 or
1107 not involving any transfer.

                 The Company shall not be required (i) to issue, register the
transfer of or exchange Securities of any series during a period beginning at
the opening of business 15 days before the day of the mailing of a notice of
redemption of Securities of such series selected for redemption and ending at
the close of business on the day of the mailing of the relevant notice of
redemption or (ii) to register the transfer of or exchange any Security so
selected for redemption in whole or in part, except the unredeemed portion of
any Security being redeemed in part.

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.

                 If any mutilated Security is surrendered to the Trustee, the
Company shall execute and the Trustee shall authenticate and deliver in
exchange therefor a new Security of the same series and of like tenor and
principal amount and bearing a number not contemporaneously outstanding.

                 If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any
Security and (ii) such security or indemnity as may be required by them to save
each of them and any agent of either of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security has been acquired by a
bona fide purchaser, the Company shall execute and upon its request the Trustee
shall authenticate and deliver, in lieu of any such destroyed, lost or stolen
Security, a new Security of the same series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

                 In case any such mutilated, destroyed, lost or stolen Security
has become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

                 Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fee and expenses of the Trustee) connected therewith.

                 Every new Security of any series issued pursuant to this
Section in lieu of any destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of the Company, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Securities of that series duly issued
hereunder.

                 The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

SECTION 307.  Payment of Interest; Interest Rights Preserved.




                                      22
<PAGE>   31
                 Interest on any Security which is payable, and is punctually
paid or duly provided for, on any Interest Payment Date shall be paid to the
Person in whose name that Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest.  Unless otherwise provided with respect to the Securities of any
series, payment of interest may be made at the option of the Company by check
mailed or delivered to the address of any Person entitled thereto as such
address shall appear in the Security Register.

                 Any interest on any Security of any series which is payable,
but is not punctually paid or duly provided for, on any Interest Payment Date
(herein called "Defaulted Interest") shall forthwith cease to be payable to the
Holder on the relevant Regular Record Date by virtue of having been such
Holder, and such Defaulted Interest may be paid by the Company, at its election
in each case, as provided in clause (1) or (2) below:

                 (1)      The Company may elect to make payment of any
         Defaulted Interest to the Persons in whose names the Securities of
         such series (or their respective Predecessor Securities) are
         registered at the close of business on a Special Record Date for the
         payment of such Defaulted Interest, which shall be fixed in the
         following manner.  The Company shall notify the Trustee in writing of
         the amount of Defaulted Interest proposed to be paid on each Security
         of such series and the date of the proposed payment, and at the same
         time the Company shall deposit with the Trustee an amount of money
         equal to the aggregate amount proposed to be paid in respect of such
         Defaulted Interest or shall make arrangements satisfactory to the
         Trustee for such deposit prior to the date of the proposed payment,
         such money when deposited to be held in trust for the benefit of the
         Persons entitled to such Defaulted Interest as in this Clause
         provided.  Thereupon the Trustee shall fix a Special Record Date for
         the payment of such Defaulted Interest which shall be not more than 15
         days and not less than 10 days prior to the date of the proposed
         payment and not less than 10 days after the receipt by the Trustee of
         the notice of the proposed payment.  The Trustee shall promptly notify
         the Company of such Special Record Date and, in the name and at the
         expense of the Company, shall cause notice of the proposed payment of
         such Defaulted Interest and the Special Record Date therefor to be
         mailed, first-class postage prepaid, to each Holder of Securities of
         such series at his address as it appears in the Security Register, not
         less than 10 days prior to such Special Record Date.  The Trustee may,
         in its discretion, in the name and at the expense of the Company,
         cause a similar notice to be published at least once in an Authorized
         Newspaper, but such publication shall not be a condition precedent to
         the establishment of such Special Record Date.  Notice of the proposed
         payment of such Defaulted Interest and the Special Record Date
         therefor having been so mailed, such Defaulted Interest shall be paid
         to the Persons in whose names the Securities of such series (or their
         respective Predecessor Securities) are registered at the close of
         business on such Special Record Date and shall no longer be payable
         pursuant to the following clause (2).

                 (2)      The Company may make payment of any Defaulted
         Interest on the Securities of any series in any other lawful manner
         not inconsistent with the requirements of any securities exchange on
         which such Securities may be listed, and upon such notice as may be
         required by such exchange, if, after notice given by the Company to
         the Trustee of the




                                      23
<PAGE>   32
         proposed payment pursuant to this Clause, such manner of payment shall
         be deemed practicable by the Trustee.

                 Subject to the foregoing provisions of this Section, each
Security delivered under this Indenture, upon registration of transfer of, in
exchange for or in lieu of, any other Security, shall carry the rights to
interest accrued and unpaid, and to accrue, which were carried by such other
Security.

SECTION 308.  Persons Deemed Owners.

                 Prior to due presentment of a Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name such Security is registered as the owner of
such Security for the purpose of receiving payment of principal of (and
premium, if any) and (subject to Sections 305 and 307) interest on such
Security and for all other purposes whatsoever, whether or not such Security be
overdue, and neither the Company, the Trustee nor any agent of the Company or
the Trustee shall be affected by notice to the contrary.

SECTION 309.  Cancellation.

                 All Securities surrendered for payment, redemption,
registration of transfer or exchange or for credit against any sinking fund
payment shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee.  All Securities so delivered shall be promptly
cancelled by the Trustee.  The Company may at any time deliver to the Trustee
for cancellation any Securities previously authenticated and delivered
hereunder which the Company may have acquired in any manner whatsoever, and all
Securities so delivered shall be promptly cancelled by the Trustee.  No
Securities shall be authenticated in lieu of or in exchange for any Securities
cancelled as provided in this Section, except as expressly permitted by this
Indenture.  All cancelled Securities held by the Trustee shall be disposed of
as directed by a Company Order; provided that the Trustee shall not be required
to destroy such Securities.

SECTION 310.  Computation of Interest.

                 Except as otherwise specified as contemplated by Section 301
for Securities of any series, interest on the Securities of each series shall
be computed on the basis of a year of twelve 30-day months.

SECTION 311.  CUSIP Numbers.

                 The Company in issuing the Securities may use "CUSIP" numbers
(if then generally in use), and, if so, the Trustee shall use "CUSIP" numbers
in notices of redemption as a convenience to Holders; provided that any such
notice may state that no representation is made as to the correctness of such
numbers either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other identification
numbers printed on the Securities, and any such redemption shall not be
affected by any defect in or omission of such numbers.




                                      24
<PAGE>   33
                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture.

                 This Indenture shall upon Company Request cease to be of
further effect with respect to Securities of a series, and the Trustee, at the
expense of the Company, shall execute proper
instruments acknowledging satisfaction and discharge of this Indenture with
respect to Securities of such series, when

                 (1)      either

                          (A)     all Securities of such series theretofore
                 authenticated and delivered (other than (i) Securities which
                 have been destroyed, lost or stolen and which have been
                 replaced or paid as provided in Section 306, and (ii)
                 Securities for whose payment money has theretofore been
                 deposited in trust or segregated and held in trust by the
                 Company and thereafter repaid to the Company or discharged
                 from such trust, as provided in Section 1003) have been
                 delivered to the Trustee for cancellation; or

                          (B)     with respect to all Outstanding Securities of
                 such series not theretofore delivered to the Trustee for
                 cancellation, the Company has deposited or caused to be
                 deposited with the Trustee as trust funds, under the terms of
                 an irrevocable trust agreement in form and substance
                 satisfactory to the Trustee, money or U.S. Government
                 Obligations maturing as to principal and interest in such
                 amounts and at such times as will (together with the income to
                 accrue thereon and without consideration of any reinvestment
                 thereof) be sufficient to pay and discharge (with such
                 delivery in trust to be for the stated purpose of paying and
                 discharging) the entire indebtedness on all Outstanding
                 Securities of such series not theretofore delivered to the
                 Trustee for cancellation for principal (and premium and
                 Additional Amounts, if any) and interest to the Stated
                 Maturity or any Redemption Date contemplated by the
                 penultimate paragraph of this Section, as the case may be; or

                          (C)     the Company has properly fulfilled such other
                 means of satisfaction and discharge as is specified, as
                 contemplated by Section 301, to be applicable to the
                 Securities of such series;

                 (2)      the Company has paid or caused to be paid all other
         sums payable hereunder by the Company with respect to the Outstanding
         Securities of such series;

                 (3)      the Company has complied with any other conditions
         specified pursuant to Section 301 to be applicable to the discharge of
         Securities of such series pursuant to this Section 401;




                                      25
<PAGE>   34
                 (4)      the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all
         conditions precedent herein provided for relating to the satisfaction
         and discharge of this Indenture with respect to the Outstanding
         Securities of such series have been complied with;

                 (5)      if the conditions set forth in Section 401(1)(A) have
         not been satisfied, and unless otherwise specified pursuant to Section
         301 for the Securities of such series, the Company has delivered to
         the Trustee an Opinion of Counsel to the effect that the Holders of
         Securities of such series will not recognize income, gain or loss for
         United States federal income tax purposes as a result of such deposit,
         satisfaction and discharge and will be subject to United States
         federal income tax on the same amount and in the same manner and at
         the same time as would have been the case if such deposit,
         satisfaction and discharge had not occurred; and

                 (6)      no Default or Event of Default with respect to the
         Securities of such issue shall have occurred and be continuing on the
         date of such deposit or, insofar as clauses (5) or (6) of Section 501
         are concerned, at any time in the period ending on the 91st day after
         the date of such deposit (it being understood that this condition
         shall not be deemed satisfied until the expiration of such period).

                 For the purposes of this Indenture, "U.S. Government
Obligations" means direct non-callable obligations of, or non-callable
obligations the payment of principal of and interest on which is guaranteed by,
the United States of America, or to the payment of which obligations or
guarantees the full faith and credit of the United States of America is
pledged, or beneficial interests in a trust the corpus of which consists
exclusively of money or such obligations or a combination thereof.

                 If any Outstanding Securities of such series are to be
redeemed prior to their Stated Maturity, whether pursuant to any optional
redemption provisions or in accordance with any mandatory sinking fund
requirement, the trust agreement referred to in subclause (B) of clause (1) of
this Section shall provide therefor and the Company shall make such
arrangements as are satisfactory to the Trustee for the giving of notice of
redemption by the Trustee in the name, and at the expense, of the Company.

                 Notwithstanding the satisfaction and discharge of this
Indenture with respect to the Outstanding Securities of such series pursuant to
this Section 401, the obligations of the Company to the Trustee under Section
607, the obligations to any Authenticating Agent under Section 614 and, except
for a discharge pursuant to subclause (A) of clause (1) of this Section, the
obligations of the Company under Sections 305, 306, 404, 610(e), 701, 1001 and
1002 and the obligations of the Trustee under Section 402 and the last
paragraph of Section 1003 shall survive.




                                      26
<PAGE>   35
SECTION 402.  Application of Trust Money.

                 Subject to the provisions of the last paragraph of Section
1003, all money deposited with the Trustee pursuant to Section 401 shall be
held in trust and applied by it, in accordance with the provisions of the
Securities and this Indenture, to the payment, either directly or through any
Paying Agent (including the Company acting as its own Paying Agent) as the
Trustee may determine, to the Persons entitled thereto, of the principal (and
premium, if any) and interest and Additional Amounts for the payment of which
such money has been deposited with the Trustee.

SECTION 403.  Discharge of Liability on Securities of Any Series.

                 If this Section is specified, as contemplated by Section 301,
to be applicable to Securities of any series, the Company shall be deemed to
have paid and discharged the entire indebtedness on all the Outstanding
Securities of such series, the obligation of the Company under this Indenture
and the Securities of such series to pay the principal of (and premium, if any)
and interest on and any Additional Amounts with respect to Securities of such
series, shall cease, terminate and be completely discharged and the Trustee, at
the expense of the Company, shall execute proper instruments acknowledging such
satisfaction and discharge, when

                 (1)      the Company has complied with the provisions of
         Section 401 (other than any additional conditions specified pursuant
         to Sections 301 and 401(3) and except that the Opinion of Counsel
         referred to in Section 401(5) shall state that it is based on a ruling
         by the Internal Revenue Service or other change since the date hereof
         under applicable Federal income tax law) with respect to all
         Outstanding Securities of such series,

                 (2)      the Company has delivered to the Trustee a Company
         Request requesting such satisfaction and discharge,

                 (3)      the Company has complied with any other conditions
         specified pursuant to Section 301 to be applicable to the discharge of
         Securities of such series pursuant to this Section 403, and

                 (4)      the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all
         conditions precedent herein provided for relating to the discharge of
         the indebtedness on the Outstanding Securities of such series have
         been complied with.

                 Upon the satisfaction of the conditions set forth in this
Section with respect to all the Outstanding Securities of any series, the terms
and conditions of such series, including the terms and conditions with respect
thereto set forth in this Indenture, shall no longer be binding upon, or
applicable to, the Company; provided that, the Company shall not be discharged
from any payment obligations in respect of Securities of such series which are
deemed not to be Outstanding under clause (iii) of the definition thereof if
such obligations continue to be valid obligations of the Company under
applicable law or pursuant to Section 305 or 306.




                                      27
<PAGE>   36
SECTION 404.  Reinstatement

                 If the Trustee or Paying Agent is unable to apply any money or
U.S. Government Obligations deposited with respect to Securities of any series
in accordance with Section 401 by reason of any legal proceeding or by reason
of any order or judgment of any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, the Company's
obligations under this Indenture with respect to the Securities of such series
and the Securities of such series shall be revived and reinstated as though no
deposit had occurred pursuant to Section 401 until such time as the Trustee or
Paying Agent is permitted to apply all such money or U.S. Government
Obligations in accordance with Section 401; provided, however, that if the
Company has made any payment of principal of (or premium, if any), or interest
on or any Additional Amounts with respect to any Securities because of the
reinstatement of its obligations, the Company shall be subrogated to the rights
of the Holders of such Securities to receive such payment from the money or
U.S. Government Obligations held by the Trustee or Paying Agent.

                                  ARTICLE FIVE

                                    REMEDIES

SECTION 501.  Events of Default.

                 "Event of Default," wherever used herein with respect to
Securities of any series, means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law or pursuant to any judgment,
decree or order of any court or any order, rule or regulation of any
administrative or governmental body), unless it is either inapplicable to a
particular series or it is specifically deleted or modified in or pursuant to
the supplemental indenture or Board Resolution establishing such series of
Securities or in the form of Security for such series:

                 (1)      default in the payment of any interest on or any
         Additional Amounts with respect to any Security of that series when
         such interest or Additional Amounts become due and payable, and
         continuance of such default for a period of 30 days; or

                 (2)      default in the payment of the principal of (or
         premium, if any, on) any Security of that series at its Maturity; or

                 (3)      default in the deposit of any mandatory sinking fund
         payment, when and as due by the terms of a Security of that series and
         continuance of such default for a period of 30 days; or

                 (4)      default in the performance or breach of any covenant
         or warranty of the Company in this Indenture (other than a covenant or
         warranty a default in whose performance or whose breach is elsewhere
         in this Section specifically dealt with or which has expressly been
         included in this Indenture solely for the benefit of one or more
         series of Securities other than that series), and continuance of such
         default or breach for a period of




                                      28
<PAGE>   37
         90 days after there has been given, by registered or certified mail,
         to the Company by the Trustee or to the Company and the Trustee by the
         Holders of at least 25% in principal amount of all Outstanding
         Securities a written notice specifying such default or breach and
         requiring it to be remedied and stating that such notice is a "Notice
         of Default" hereunder; or

                 (5)      the entry by a court having jurisdiction in the
         premises of (A) a decree or order for relief in respect of the Company
         in an involuntary case or proceeding under any applicable Federal or
         State bankruptcy, insolvency, reorganization or other similar law or
         (B) a decree or order adjudging the Company a bankrupt or insolvent,
         or approving as properly filed a petition seeking reorganization,
         arrangement, adjustment or composition of or in respect of the Company
         under any applicable Federal or State law, or appointing a custodian,
         receiver, liquidator, assignee, trustee, sequestrator or other similar
         official of the Company or of any substantial part of its property, or
         ordering the winding up or liquidation of its affairs, and the
         continuance of any such decree or order for relief or any such other
         decree or order unstayed and in effect for a period of 90 consecutive
         days; or

                 (6)      the commencement by the Company of a voluntary case
         or proceeding under any applicable Federal or State bankruptcy,
         insolvency, reorganization or other similar law or of any other case
         or proceeding to be adjudicated a bankrupt or insolvent, or the
         consent by it to the entry of a decree or order for relief in respect
         of the Company in an involuntary case or proceeding under any
         applicable Federal or State bankruptcy, insolvency, reorganization or
         other similar law or to the commencement of any bankruptcy or
         insolvency case or proceeding against it, or the filing by it, of a
         petition or answer or consent seeking reorganization or relief under
         any applicable Federal or State law, or the consent by it to the
         filing of such petition or to the appointment of or taking possession
         by a custodian, receiver, liquidator, assignee, trustee, sequestrator
         or similar official of the Company or of any substantial part of its
         property, or the making by it of an assignment for the benefit of
         creditors, or the admission by it in writing of its inability to pay
         its debts generally as they become due, or the taking of corporate
         action by the Company in furtherance of any such action; or

                 (7)      any other Event of Default provided with respect to
                          Securities of that series.

                 Notwithstanding the foregoing provisions of this Section 501,
if the principal of (and premium, if any) or any interest on, or Additional
Amounts with respect to, any Security is payable in a currency or currencies
(including a composite currency) other than Dollars and such currency (or
currencies) is (or are) not available to the Company for making payment thereof
due to the imposition of exchange controls or other circumstances beyond the
control of the Company (a "Conversion Event"), the Company will be entitled to
satisfy its obligations to Holders of the Securities by making such payment in
Dollars in an amount equal to the Dollar equivalent of the amount payable in
such other currency, as determined by the Company by reference to the noon
buying rate in The City of New York for cable transfers for such currency
("Exchange Rate"), as such Exchange Rate is certified for customs purposes by
the Federal Reserve Bank of New York on the date of such payment, or, if such
rate is not then available, on the basis of the most recently




                                      29
<PAGE>   38
available Exchange Rate.  Notwithstanding the foregoing provisions of this
Section 501, any payment made under such circumstances in Dollars where the
required payment is in a currency other than Dollars will not constitute an
Event of Default under this Indenture.

                 Promptly after the occurrence of a Conversion Event with
respect to Securities of any series, the Company shall give written notice
thereof to the Trustee; and the Trustee, promptly after receipt of such notice,
shall give notice thereof in the manner provided in Section 107 to the Holders
of such series.  Promptly after the making of any payment in Dollars as a
result of a Conversion Event with respect to Securities of any series, the
Company shall give notice in the manner provided in Section 107 to the Holders
of such series, setting forth the applicable Exchange Rate and describing the
calculation of such payments.

SECTION 502.  Acceleration of Maturity; Rescission and Annulment.

                 If an Event of Default with respect to any Securities of any
series at the time Outstanding occurs and is continuing, then in every such
case the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of (i) the series affected by such default (in the case
of an Event of Default described in clause (1), (2), (3) or (7) of Section 501)
or (ii) all series of Securities (subject to the immediately following
sentence, in the case of an Event of Default described in clause (4) of Section
501) may declare the principal amount (or, if any such Securities are Original
Issue Discount Securities, such portion of the principal amount as may be
specified in the terms of that series) of all of the Securities of the series
affected by such default or all series, as the case may be, to be due and
payable immediately, by a notice in writing to the Company (and to the Trustee
if given by Holders), and upon any such declaration such principal amount (or
specified amount) shall become immediately due and payable.  If an Event of
Default described in clause (5) or (6) of Section 501 shall occur, the
principal amount of the Outstanding Securities of all series ipso facto shall
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any Holder.

                 At any time after such a declaration of acceleration with
respect to Securities of any series (or of all series, as the case may be) has
been made and before a judgment or decree for payment of the money due has been
obtained by the Trustee as hereinafter in this Article provided, the Holders of
a majority in principal amount of the Outstanding Securities of that series (or
of all series, as the case may be), by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if

                 (1)      the Company has paid or deposited with the Trustee a
                          sum sufficient to pay

                          (A)     all overdue interest on, and any Additional
                 Amounts with respect to, all Securities of that series (or of
                 all series, as the case may be),

                          (B)     the principal of (and premium, if any, on)
                 any Securities of that series (or of all series, as the case
                 may be) which have become due otherwise than by such
                 declaration of acceleration and interest thereon at the rate
                 or rates prescribed therefor




                                      30
<PAGE>   39
                 in such Securities (in the case of Original Issue Discount
                 Securities, the Securities' Yield to Maturity),

                          (C)     to the extent that payment of such interest
                 is lawful, interest upon overdue interest and any Additional
                 Amounts at the rate or rates prescribed therefor in such
                 Securities (in the case of Original Issue Discount Securities,
                 the Securities' Yield to Maturity), and

                          (D)     all sums paid or advanced by the Trustee
                 hereunder and the reasonable compensation, expenses,
                 disbursements and advances of the Trustee, its agents and
                 counsel;

         and

                 (2)      all Events of Default with respect to Securities of
         that series (or of all series, as the case may be), other than the
         non-payment of the principal of Securities of that series (or of all
         series, as the case may be) which have become due solely by such
         declaration of acceleration, have been cured or waived as provided in
         Section 512.

         No such rescission shall affect any subsequent default or impair any
right consequent thereon.

SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.

                 The Company covenants that if

                 (1)      default is made in the payment of any installment of
         interest on, or any Additional Amounts with respect to, any Security
         of any series when such interest or Additional Amounts shall have
         become due and payable and such default continues for a period of 30
         days, or

                 (2)      default is made in the payment of the principal of
         (or premium, if any, on) any Security at the Maturity thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal (and premium, if any) and interest and Additional
Amounts and, to the extent that payment of such interest shall be legally
enforceable, interest on any overdue principal (and premium, if any) and on any
overdue interest and Additional Amounts, at the rate or rates prescribed
therefor in such Securities (or in the case of Original Issue Discount
Securities, the Securities' Yield to Maturity), and, in addition thereto, such
further amount as shall be sufficient to cover the costs and expenses of
collection, including the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel.

                 If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name and as trustee of an express trust, may
institute a judicial proceeding for the




                                      31
<PAGE>   40
collection of the sums so due and unpaid, may prosecute such proceeding to
judgment or final decree and may enforce the same against the Company or any
other obligor upon such Securities and collect the moneys adjudged or decreed
to be payable in the manner provided by law out of the property of the Company
or any other obligor upon such Securities, wherever situated.

                 If an Event of Default with respect to Securities of any
series occurs and is continuing, the Trustee may in its discretion proceed to
protect and enforce its rights and the rights of the Holders of Securities of
such series by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.

SECTION 504.  Trustee May File Proofs of Claim.

                 In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition
or other judicial proceeding relative to the Company or any other obligor upon
the Securities or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal (or lesser amount
in the case of Original Issue Discount Securities) of the Securities shall then
be due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Trustee shall have made any demand on the Company
for the payment of overdue principal (and premium, if any), interest or any
Additional Amounts) shall be entitled and empowered, by intervention in such
proceeding or otherwise,

                 (i)      to file and prove a claim for the whole amount of
         principal (or lesser amount in the case of Original Issue Discount
         Securities) (and premium, if any) and interest and any Additional
         Amounts owing and unpaid in respect of the Securities and to file such
         other papers or documents as may be necessary or advisable in order to
         have the claims of the Trustee (including any claim for the reasonable
         compensation, expenses, disbursements and advances of the Trustee, its
         agents and counsel) and of the Holders allowed in such judicial
         proceeding, and

                 (ii)     to collect and receive any monies or other property
         payable or deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders,
to pay to the Trustee any amount due it for the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel,
and any other amounts due the Trustee under Section 607.

                 Nothing herein contained shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting
the Securities or the rights of any Holder thereof or to authorize




                                      32
<PAGE>   41
the Trustee to vote in respect of the claim of any Holder in any such
proceedings; provided, however,  that the Trustee may, on behalf of the
Holders, vote for the election of a trustee in bankruptcy or similar official.

SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or
Coupons.

                 All rights of action and claim under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without possession of
any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment
shall, after provision for the payment of the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel, be
for the ratable benefit of the Holders of the Securities in respect of which
such judgment has been recovered.

SECTION 506.  Application of Money Collected.

                 Any money collected by the Trustee pursuant to this Article
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
(or premium, if any), interest or any Additional Amounts, upon presentation of
the Securities, and the notation thereon of the payment if only partially paid
and upon surrender thereof if fully paid:

                 FIRST:  To the payment of all amounts due the Trustee under
         Section 607;

                 SECOND: To the payment of the amounts then due and unpaid for
         principal of (and premium, if any) and interest on and any Additional
         Amounts with respect to the Securities in respect of which or for the
         benefit of which such money has been collected, ratably, without
         preference or priority of any kind, according to the amounts due and
         payable on such Securities for principal (and premium, if any),
         interest and Additional Amounts, respectively; and

                 THIRD:  The balance, if any, to the Person or Persons entitled
         thereto.

                 To the fullest extent allowed under applicable law, if for the
purpose of obtaining judgment against the Company in any court it is necessary
to convert the sum due in respect of the principal of (or premium, if any) or
interest on or any Additional Amounts with respect to the Securities of any
series (the "Required Currency") into a currency in which a judgment will be
rendered (the "Judgment Currency"), the rate of exchange used shall be the rate
at which in accordance with normal banking procedures the Trustee could
purchase in The City of New York the Required Currency with the Judgment
Currency on the New York Business Day next preceding that on which final
judgment is given.  Neither the Company nor the Trustee shall be liable for any
shortfall nor shall it benefit from any windfall in payments to Holders of
Securities under this Section caused by a change in exchange rates between the
time the amount of a judgment against it is calculated as above and the time
the Trustee converts the Judgment Currency into the Required Currency to make
payments under this Section to Holders of Securities, but payment of such




                                      33
<PAGE>   42
judgment shall discharge all amounts owed by the Company on the claim or claims
underlying such judgment.

SECTION 507.  Limitation on Suits.

                 Subject to Section 508, no Holder of any Security of any
series shall have any right to institute any proceeding, judicial or otherwise,
with respect to this Indenture, or for the appointment of a receiver or
trustee, or for any other remedy hereunder, unless

                 (1)      an Event of Default with respect to Securities of
         such series shall have occurred and be continuing and such Holder has
         previously given written notice to the Trustee of such continuing
         Event of Default;

                 (2)      the Holders of not less than 25% in principal amount
         of the Outstanding Securities of that series shall have made written
         request to the Trustee to institute proceedings in respect of such
         Event of Default in its own name as Trustee hereunder;

                 (3)      such Holder or Holders have offered to the Trustee
         reasonable indemnity against the costs, expenses and liabilities to be
         incurred in compliance with such request;

                 (4)      the Trustee for 60 days after its receipt of such
         notice, request and offer of indemnity has failed to institute any
         such proceeding; and

                 (5)      no direction inconsistent with such written request
         has been given to the Trustee during such 60-day period by the Holders
         of a majority in principal amount of the Outstanding Securities of
         that series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

SECTION 508.  Unconditional Right of Holders to Receive Principal Premium and
Interest.

                 Notwithstanding any other provision in this Indenture, the
Holder of any Security shall have the right, which is absolute and
unconditional, to receive payment of the principal of (and premium, if any) and
(subject to Section 307) interest on and any Additional Amounts with respect to
such Security on the Stated Maturity or Maturities expressed in such Security
(or, in the case of redemption, on the Redemption Date) and to institute suit
for the enforcement of any such payment, and such rights shall not be impaired
or affected without the consent of such Holder.




                                      34
<PAGE>   43
SECTION 509.   Restoration of Rights and Remedies.

                 If the Trustee or any Holder of any Security has instituted
any proceeding to enforce any right or remedy under this Indenture and such
proceeding has been discontinued or abandoned for any reason, then and in every
such case the Company, the Trustee and the Holders shall, subject to any
determination in such proceeding, be restored severally and respectively to
their former positions hereunder, and thereafter all rights and remedies of the
Trustee and the Holders shall continue as though no such proceeding had been
instituted.

SECTION 510.  Rights and Remedies Cumulative.

                 Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other right
or remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise.  The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent
the concurrent assertion or employment of any other appropriate right or
remedy.

SECTION 511.  Delay or Omission Not Waiver.

                 No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein.  Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time
to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

SECTION 512.  Control by Holders.

                 With respect to Securities of any series, the Holders of a
majority in principal amount of the Outstanding Securities of such series shall
have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee, or exercising any trust or
power conferred on the Trustee, relating to or arising under an Event of
Default described in clause (1), (2), (3) or (7) of Section 501, and with
respect to all Securities the Holders of a majority in principal amount of all
Outstanding Securities shall have the right to direct the time, method and
place of conducting any remedy available to the Trustee, or exercising any
trust or power conferred on the Trustee, not relating to or arising under such
an Event of Default, provided that in each such case

                 (1)      such direction shall not be in conflict with any rule
         of law or with this Indenture, and

                 (2)      the Trustee may take any other action deemed proper
         by the Trustee which is not inconsistent with such direction.




                                      35
<PAGE>   44
SECTION 513.  Waiver of Past Defaults.

                 The Holders of a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, and the Holders of a majority in principal amount
of all Outstanding Securities may on behalf of the Holders of all Securities
waive any other past default hereunder and its consequences, except in each
case a default

                 (1)      in the payment of the principal of (or premium, if
         any) or interest on, or any Additional Amounts with respect to, any
         Security, or

                 (2)      in respect of a covenant or provision hereof which
         under Article Nine cannot be modified or amended without the consent
         of the Holder of each Outstanding Security affected.

                 Upon any such waiver, such default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or impair any right consequent thereon.

SECTION 514.  Undertaking for Costs.

                 All parties to this Indenture agree, and each Holder of any
Security by his acceptance thereof shall be deemed to have agreed, that any
court may in its discretion require, in any suit for the enforcement of any
right or remedy under this Indenture, or in any suit against the Trustee for
any action taken or omitted by it as Trustee, the filing by any party litigant
in such suit of an undertaking to pay the costs of such suit, and that such
court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to any suit
instituted by the Company, to any suit instituted by the Trustee, to any suit
instituted by any Holder, or group of Holders, holding in the aggregate more
than 10% in principal amount of the Outstanding Securities of any series, or to
any suit instituted by any Holder for the enforcement of the payment of the
principal of (or premium, if any) or interest on, or any Additional Amounts
with respect to, any Security on or after the Stated Maturity or Maturities
expressed in such Security (or, in the case of redemption, on or after the
Redemption Date).

SECTION 515.   Waiver of Stay or Extension Laws.

                 The Company covenants (to the extent that it may lawfully do
so) that it will not at any time insist upon, or plead, or in any manner
whatsoever claim or take the benefit or advantage of, any stay or extension law
wherever enacted, now or at any time hereafter in force, which may affect the
covenants or the performance of this Indenture; and the Company (to the extent
that it may lawfully do so) hereby expressly waives all benefit or advantage of
any such law, and covenants that it will not hinder, delay or impede the
execution of any power herein granted to the Trustee, but will suffer and
permit the execution of every such power as though no such law had been
enacted.




                                      36
<PAGE>   45
                                  ARTICLE SIX

                                  THE TRUSTEE

SECTION 601.  Certain Duties and Responsibilities.

                 (a)      Except during the continuance of an Event of Default
         with respect to the Securities of any series,

                          (1)     the Trustee undertakes to perform such duties
                 and only such duties as are specifically set forth in this
                 Indenture, and no implied covenants or obligations shall be
                 read into this Indenture against the Trustee; and

                          (2)     in the absence of bad faith on its part, the
                 Trustee may conclusively rely, as to the truth of the
                 statements and the correctness of the opinions expressed
                 therein, upon certificates or opinions furnished to the
                 Trustee and conforming to the requirements of this Indenture;
                 but in the case of any such certificates or opinions which by
                 any provision hereof are specifically required to be furnished
                 to the Trustee, the Trustee shall be under a duty to examine
                 the same to determine whether or not they conform to the
                 requirements of this Indenture.

                 (b)      In case an Event of Default has occurred and is
         continuing with respect to the Securities of any series, the Trustee
         shall exercise such of the rights and powers vested in it by this
         Indenture, and use the same degree of care and skill in their
         exercise, as a prudent man would exercise or use under the
         circumstances in the conduct of his own affairs.

                 (c)      No provision of this Indenture shall be construed to
         relieve the Trustee from liability for its own negligent action, its
         own negligent failure to act or its own willful misconduct, except
         that

                          (1)     this Subsection shall not be construed to
                 limit the effect of Subsection (a) of this Section;

                          (2)     the Trustee shall not be liable for any error
                 of judgment made in good faith by a Responsible Officer,
                 unless it shall be proved that the Trustee was negligent in
                 ascertaining the pertinent facts;

                          (3)     the Trustee shall not be liable with respect
                 to any action taken or omitted to be taken by it in good faith
                 in accordance with the direction of the Holders of a majority
                 in principal amount of the Outstanding Securities of any
                 series or of all series, determined as provided in Section
                 511, relating to the time, method and place of conducting any
                 proceeding for any remedy available to the Trustee, or
                 exercising any trust or power conferred upon the Trustee,
                 under this Indenture with respect to the Securities of such
                 series; and




                                      37
<PAGE>   46
                          (4)     no provision of this Indenture shall require
                 the Trustee to expend or risk its own funds or otherwise incur
                 any financial liability in the performance of any of its
                 duties hereunder, or in the exercise of any of its rights or
                 powers, if it shall have reasonable grounds for believing that
                 repayment of such funds or indemnity satisfactory to it
                 against such risk or liability is not assured to it.

                 (d)      Whether or not therein expressly so provided, every
         provision of this Indenture relating to the conduct or affecting the
         liability of or affording protection to the Trustee shall be subject
         to the provisions of this Section.

SECTION 602.  Notice of Defaults.

                 Within 90 days after the occurrence of any default hereunder
with respect to the Securities of any series, the Trustee shall give notice of
such default hereunder known to the Trustee to all Holders of Securities of
such series in the manner provided in Section 107, unless such default shall
have been cured or waived; provided, however, that, except in the case of a
default in the payment of the principal of (or premium, if any) or interest on,
or any Additional Amounts with respect to, any Security of such series or in
the payment of any sinking fund installment with respect to Securities of such
series, the Trustee shall be protected in withholding such notice if and so
long as the board of directors, the executive committee or a trust committee of
directors or Responsible Officers of the Trustee in good faith determines that
the withholding of such notice is in the interest of the Holders of Securities
of such series; and provided, further, that in the case of any default of the
character specified in Section 501(4) with respect to Securities of such
series, no such notice to Holders shall be given until at least 30 days after
the occurrence thereof.  For the purpose of this Section, the term "default"
means any event, act or condition which is, or after notice or lapse of time or
both would become, an Event of Default with respect to Securities of such
series.

SECTION 603.  Certain Rights of Trustee.

                 Subject to the provisions of Section 601:

                 (a)      the Trustee may rely and shall be protected in acting
         or refraining from acting upon any resolution, certificate, statement,
         instrument, opinion, report, notice, request, direction, consent,
         order, bond, debenture, note, coupon, other evidence of indebtedness
         or other paper or document believed by it to be genuine and to have
         been signed or presented by the proper party or parties;

                 (b)      any request or direction of the Company mentioned
         herein shall be sufficiently evidenced by a Company Request or Company
         Order and any resolution of the Board of Directors may be sufficiently
         evidenced by a Board Resolution;

                 (c)      whenever in the administration of this Indenture the
         Trustee shall deem it desirable that a matter be proved or established
         prior to taking, suffering or omitting any action hereunder, the
         Trustee (unless other evidence be herein specifically prescribed) may,
         in the absence of bad faith on its part, rely upon an Officers'
         Certificate;




                                      38
<PAGE>   47
                 (d)      the Trustee may consult with counsel and the written
         advice of such counsel or any Opinion of Counsel shall be full and
         complete authorization and protection in respect of any action taken,
         suffered or omitted by it hereunder in good faith and in reliance
         thereon;

                 (e)      the Trustee shall be under no obligation to exercise
         any of the rights or powers vested in it by this Indenture at the
         request or direction of any of the Holders pursuant to this Indenture,
         unless such Holders shall have offered to the Trustee security or
         indemnity satisfactory to it against the costs, expenses and
         liabilities which might be incurred by it in compliance with such
         request or direction;

                 (f)      the Trustee shall not be bound to make any
         investigation into the facts or matters stated in any resolution,
         certificate, statement, instrument, opinion, report, notice, request,
         direction, consent, order, bond, debenture, note, coupon, other
         evidence of indebtedness or other paper or document, but the Trustee,
         in its discretion, may make such further inquiry or investigation into
         such facts or matters as it may see fit, and, if the Trustee shall
         determine to make such further inquiry or investigation, it shall be
         entitled to examine the books, records and premises of the Company,
         personally or by agent or attorney; and

                 (g)      the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys and, except for any Affiliates of the
         Trustee, the Trustee shall not be responsible for any misconduct or
         negligence on the part of any agent or attorney appointed with due
         care by it hereunder.

SECTION 604.  Not Responsible for Recitals or Issuance of Securities.

                 The recitals contained herein and in the Securities, except
the Trustee's certificates of authentication, shall be taken as the statements
of the Company, and the Trustee assumes no responsibility for their
correctness.  The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Securities.  The Trustee shall not be
accountable for the use or application by the Company of Securities or the
proceeds thereof.

         SECTION 605.  May Hold Securities.

                 The Trustee, any Authenticating Agent, any Paying Agent, any
Security Registrar or any other agent of the Company, in its individual or any
other capacity, may become the owner or pledgee of Securities and, subject to
Sections 608 and 613, may otherwise deal with the Company with the same rights
it would have if it were not Trustee, Authenticating Agent, Paying Agent,
Security Registrar or such other agent.

SECTION 606.  Money Held in Trust.

                 Money held by the Trustee in trust hereunder need not be
segregated from other funds except to the extent required by law.  The Trustee
shall be under no liability for interest on any money received by it hereunder
except as otherwise agreed with the Company.




                                      39
<PAGE>   48
SECTION 607.  Compensation and Reimbursement.

                 The Company agrees

                 (1)      to pay to the Trustee from time to time compensation
         for all services rendered by it hereunder (which compensation shall
         not be limited by any provision of law in regard to the compensation
         of a trustee of an express trust);

                 (2)      except as otherwise expressly provided herein, to
         reimburse the Trustee upon its request for all reasonable expenses,
         disbursements and advances incurred or made by the Trustee in
         accordance with any provision of this Indenture (including the
         compensation and the reasonable expenses and disbursements of its
         agents and counsel), except any such expense, disbursement or advance
         as may be attributable to its negligence or bad faith; and

                 (3)      to indemnify the Trustee and each of its directors,
         officers, employees, agents and/or representatives for, and to hold
         each of them harmless against, any loss, liability or expense incurred
         without negligence or bad faith on each of their part, arising out of
         or in connection with the acceptance or administration of the trust or
         trusts hereunder, including the costs and expenses of defending
         themselves against any claim or liability in connection with the
         exercise or performance of any of the Trustee's powers or duties
         hereunder.

                 As security for the performance of the obligations of the
Company under this Section, the Trustee shall have a lien prior to the
Securities upon all property and funds held or collected by the Trustee as
such, except funds held in trust for the payment of principal of, premium, if
any, or interest, if any, on, or any Additional Amounts with respect to,
particular Securities.

                 Any expenses and compensation for any services rendered by the
Trustee after the occurrence of an Event of Default specified in clause (5) or
(6) of Section 501 shall constitute expenses and compensation for services of
administration under all applicable federal or state bankruptcy, insolvency,
reorganization or other similar laws.

                 The provisions of this Section shall survive the termination
of this Indenture.

SECTION 608.  Disqualification; Conflicting Interests.

                 (a)      If the Trustee has or shall acquire any conflicting
         interest, as defined in this Section, with respect to the Securities
         of any series, it shall, within 90 days after ascertaining that it has
         such conflicting interest, either eliminate such conflicting interest
         or resign with respect to the Securities of that series in the manner
         and with the effect hereinafter specified in this Article.

                 (b)      In the event that the Trustee shall fail to comply
         with the provisions of Subsection (a) of this Section with respect to
         the Securities of any series, the Trustee shall, within 10 days after
         the expiration of such 90-day period, transmit by mail to all Holders
         of




                                      40
<PAGE>   49
         Securities of that series, as their names and addresses appear in the
         Security Register, notice of such failure.

                 (c)      For the purposes of this Section, the term
         "conflicting interest" shall have the meaning specified in Section
         310(b) of the Trust Indenture Act and the Trustee shall comply with
         Section 310(b) of the Trust Indenture Act; provided that there shall
         be excluded from the operation of Section 310(b)(1) of the Trust
         Indenture Act with respect to the Securities of any series any
         indenture or indentures under which other securities, or certificates
         of interest or participation in other securities, of the Company are
         outstanding, if the requirements for such exclusion set forth in
         Section 310(b)(1) of the Trust Indenture Act are met.  For purposes of
         the preceding sentence, the optional provision permitted by the second
         sentence of Section 310(b)(9) of the Trust Indenture Act shall be
         applicable.

SECTION 609.  Corporate Trustee Required; Eligibility.

                 There shall at all times be a Trustee hereunder which shall be
a corporation organized and doing business under the laws of the United States
of America, any State thereof or the District of Columbia, authorized under
such laws to exercise corporate trust powers, having a combined capital and
surplus of at least $50,000,000 and subject to supervision or examination by
Federal or State or District of Columbia authority.  If such corporation
publishes reports of condition at least annually, pursuant to law or to the
requirements of said supervising or examining authority, then for the purposes
of this Section, the combined capital and surplus of such corporation shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published.  If at any time the Trustee shall cease to be
eligible in accordance with the provisions of this Section, it shall resign
immediately in the manner and with the effect hereinafter specified in this
Article.

                 The Indenture shall always have a Trustee who satisfies the
requirements of Sections 310(a)(1), 310(a)(2) and 310(a)(5) of the Trust
Indenture Act.

SECTION 610.  Resignation and Removal; Appointment of Successor.

                 (a)      No resignation or removal of the Trustee and no
         appointment of a successor Trustee pursuant to this Article shall
         become effective until the acceptance of appointment by the successor
         Trustee in accordance with the applicable requirements of Section 611.

                 (b)      The Trustee may resign at any time with respect to
         the Securities of one or more series by giving written notice thereof
         to the Company.  If the instrument of acceptance by a successor
         Trustee required by Section 611 shall not have been delivered to the
         resigning Trustee within 30 days after the giving of such notice of
         resignation, the resigning Trustee may petition any court of competent
         jurisdiction for the appointment of a successor Trustee with respect
         to the Securities of such series.

                 (c)      The Trustee may be removed at any time with respect
         to the Securities of any series by Act of the Holders of a majority in
         principal amount of the Outstanding Securities of such series,
         delivered to the Trustee and to the Company.




                                      41
<PAGE>   50
                 (d)      If at any time:

                          (1)     the Trustee shall fail to comply with Section
                 608(a) after written request therefor by the Company or by any
                 Holder who has been a bona fide Holder of a Security for at
                 least six months, or

                          (2)     the Trustee shall cease to be eligible under
                 Section 609 and shall fail to resign after written request
                 therefor by the Company or by any such Holder of Securities,
                 or

                          (3)     the Trustee shall become incapable of acting
                 or shall be adjudged a bankrupt or insolvent or a receiver of
                 the Trustee or of its property shall be appointed or any
                 public officer shall take charge or control of the Trustee or
                 of its property or affairs for the purpose of rehabilitation,
                 conservation or liquidation,

         then, in any such case, (i) the Company by a Board Resolution may
         remove the Trustee with respect to all Securities, or (ii) subject to
         Section 513, any Holder who has been a bona fide Holder of a Security
         for at least six months may, on behalf of himself and all others
         similarly situated, petition any court of competent jurisdiction for
         the removal of the Trustee with respect to all Securities and the
         appointment of a successor Trustee or Trustees.

                 (e)      If the Trustee shall resign, be removed or become
         incapable of acting, or if a vacancy shall occur in the office of
         Trustee for any cause, with respect to the Securities of one or more
         series, the Company, by a Board Resolution, shall promptly appoint a
         successor Trustee or Trustees with respect to the Securities of that
         or those series (it being understood that any such successor Trustee
         may be appointed with respect to the Securities of one or more or all
         of such series and that at any time there shall be only one Trustee
         with respect to the Securities of any particular series) and such
         successor Trustee or Trustees shall comply with the applicable
         requirements of Section 611.  If no successor Trustee with respect to
         the Securities of any series shall have been so appointed by the
         Company and accepted appointment in the manner required by Section
         611, any Holder who has been a bona fide Holder of a Security of such
         series for at least six months may, on behalf of himself and all
         others similarly situated, petition any court of competent
         jurisdiction for the appointment of a successor Trustee with respect
         to the Securities of such series.

                 (f)      The Company shall give notice of each resignation and
         each removal of the Trustee with respect to the Securities of any
         series and each appointment of a successor Trustee with respect to the
         Securities of any series by mailing written notice of such event by
         first-class mail, postage prepaid, to all Holders of Securities of
         such series as their names and addresses appear in the Security
         Register.  Each notice shall include the name of the successor Trustee
         with respect to the Securities of such series and the address of its
         Corporate Trust Office.




                                      42
<PAGE>   51
SECTION 611.  Acceptance of Appointment by Successor.

                 (a)      In case of the appointment hereunder of a successor
         Trustee with respect to all Securities, every such successor Trustee
         so appointed shall execute, acknowledge and deliver to the Company and
         to the retiring Trustee an instrument accepting such appointment, and
         thereupon the resignation or removal of the retiring Trustee shall
         become effective and such successor Trustee, without any further act,
         deed or conveyance, shall become vested with all the rights, powers,
         trusts and duties of the retiring Trustee; but, on the request of the
         Company or the successor Trustee, such retiring Trustee shall, upon
         payment of its charges, execute and deliver an instrument transferring
         to such successor Trustee all the rights, powers and trusts of the
         retiring Trustee and shall duly assign, transfer and deliver to such
         successor Trustee all property and money held by such retiring Trustee
         hereunder.

                 (b)      In case of the appointment hereunder of a successor
         Trustee with respect to the Securities of one or more (but not all)
         series, the Company, the retiring Trustee and each successor Trustee
         with respect to the Securities of one or more series shall execute and
         deliver an indenture supplemental hereto wherein each successor
         Trustee shall accept such appointment and which (1) shall contain such
         provisions as shall be necessary or desirable to transfer and confirm
         to, and to vest in, each successor Trustee all the rights, powers,
         trusts and duties of the retiring Trustee with respect to the
         Securities of that or those series to which the appointment of such
         successor Trustee relates, (2) if the retiring Trustee is not retiring
         with respect to all Securities, shall contain such provisions as shall
         be deemed necessary or desirable to confirm that all the rights,
         powers, trusts and duties of the retiring Trustee with respect to the
         Securities of that or those series as to which the retiring Trustee is
         not retiring shall continue to be vested in the retiring Trustee and
         (3) shall add to or change any of the provisions of this Indenture as
         shall be necessary to provide for or facilitate the administration of
         the trusts hereunder by more than one Trustee, it being understood
         that nothing herein or in such supplemental indenture shall constitute
         such Trustees co-trustees of the same trust and that each such Trustee
         shall be trustee of a trust or trusts hereunder separate and apart
         from any trust or trusts hereunder administered by any other such
         Trustee; and upon the execution and delivery of such supplemental
         indenture, the resignation or removal of the retiring Trustee shall
         become effective to the extent provided therein and each such
         successor Trustee, without any further act, deed or conveyance, shall
         become vested with all the rights, powers, trusts and duties of the
         retiring Trustee with respect to the Securities of that or those
         series to which the appointment of such successor Trustee relates;
         but, on request of the Company or any successor Trustee, such retiring
         Trustee shall duly assign, transfer and deliver to such successor
         Trustee all property and money held by such retiring Trustee hereunder
         with respect to the Securities of that or those series to which the
         appointment of such successor Trustee relates.

                 (c)      Upon request of any such successor Trustee, the
         Company shall execute any and all instruments for more fully and
         certainly vesting in and confirming to such successor Trustee all such
         rights, powers and trusts referred to in paragraph (a) or (b) of this
         Section, as the case may be.




                                      43
<PAGE>   52
                 (d)      No successor Trustee shall accept its appointment
         unless at the time of such acceptance such successor Trustee shall be
         qualified and eligible under this Article.

SECTION 612.  Merger, Conversion, Consolidation or Succession to Business.

                 Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation succeeding to all or substantially all the corporate
trust business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on the
part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Securities so authenticated with the same
effect as if such successor Trustee had itself authenticated such Securities.

SECTION 613.  Preferential Collection of Claims Against Company.

                 The Trustee shall comply with Section 311(a) of the Trust
Indenture Act, excluding any creditor relationship described in Section 311(b)
of the Trust Indenture Act.  A Trustee who has resigned or been removed shall
be subject to Section 311(a) of the Trust Indenture Act to the extent indicated
therein.

SECTION 614.  Appointment of Authenticating Agent.

                 The Trustee may appoint an Authenticating Agent or Agents
which shall be authorized to act on behalf of the Trustee to authenticate
Securities issued upon original issue and upon exchange, registration of
transfer or partial redemption or pursuant to Section 306, and Securities so
authenticated shall be entitled to the benefits of this Indenture and shall be
valid and obligatory for all purposes as if authenticated by the Trustee
hereunder.  Wherever reference is made in this Indenture to the authentication
and delivery of Securities by the Trustee or the Trustee's certificate of
authentication, such reference shall be deemed to include authentication and
delivery on behalf of the Trustee by an Authenticating Agent and a certificate
of authentication executed on behalf of the Trustee by an Authenticating Agent.
Each Authenticating Agent shall be acceptable to the Company and shall at all
times be a corporation organized and doing business under the laws of the
United States of America, any State thereof or the District of Columbia having
a combined capital and surplus of not less than $50,000,000 or equivalent
amount expressed in a foreign currency and subject to supervision or
examination by Federal or State or District of Columbia authority or authority
of such country.  If such Authenticating Agent publishes reports of condition
at least annually, pursuant to law or to the requirements of said supervising
or examining authority, then for the purposes of this Section, the combined
capital and surplus of such Authenticating Agent shall be deemed to be its
combined capital and surplus as set forth in its most recent report of
condition so published.  If at any time an Authenticating Agent shall cease to
be eligible in accordance with the provisions of this Section, such
Authenticating Agent shall resign immediately in the manner and with the effect
specified in this Section.




                                      44
<PAGE>   53
                 Any corporation into which an Authenticating Agent may be
merged or converted or with which it may be consolidated, or any corporation
resulting from any merger, conversion or consolidation to which such
Authenticating Agent shall be a party, or any corporation succeeding to the
corporate agency or corporate trust business of an Authenticating Agent, shall
continue to be an Authenticating Agent, provided such corporation shall be
otherwise eligible under this Section, without the execution or filing of any
paper or any further act on the part of the Trustee or the Authenticating
Agent.

                 An Authenticating Agent may resign at any time by giving
written notice thereof to the Trustee and to the Company.  The Trustee may at
any time terminate the agency of an Authenticating Agent by giving written
notice thereof to such Authenticating Agent and to the Company.  Upon receiving
such a notice of resignation or upon such a termination, or in case at any time
such Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, the Trustee may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall mail written notice of
such appointment by first-class mail, postage prepaid, to all Holders as their
names and addresses appear in the Security Register.  Any successor
Authenticating Agent upon acceptance of its appointment hereunder shall become
vested with all the rights, powers and duties of its predecessor hereunder,
with like effect as if originally named as an Authenticating Agent.  No
successor Authenticating Agent shall be appointed unless eligible under the
provisions of this Section.

                 The Trustee agrees to pay to each Authenticating Agent from
time to time reasonable compensation for its services under this Section, and
the Trustee shall be entitled to be reimbursed for such payments, subject to
the provisions of Section 607.

                 If an appointment is made pursuant to this Section, the
Securities may have endorsed thereon, in addition to the Trustee's certificate
of authentication, an alternate certificate of authentication in the following
form:

                 "This is one of the Securities of the series designated
therein referred to in the within-mentioned Indenture.


                                        [TRUSTEE],
                                               as Trustee


                                        By_____________________________________,
                                               as Authenticating Agent



                                        By______________________________________
                                                Authorized Signatory."




                                      45
<PAGE>   54
                 Notwithstanding any provision of this Section 614 to the
contrary, if at any time any Authenticating Agent appointed hereunder with
respect to any series of Securities shall not also be acting as the Security
Registrar hereunder with respect to any series of Securities, then, in addition
to all other duties of an Authenticating Agent hereunder, such Authenticating
Agent shall also be obligated:  (i) to furnish to the Security Registrar
promptly all information necessary to enable the Security Registrar to maintain
at all times an accurate and current Security Register; and (ii) prior to
authenticating any Security denominated in a foreign currency, to ascertain
from the Company the units of such foreign currency that are required to be
determined by the Company pursuant to Section 302.

                                 ARTICLE SEVEN

               HOLDER'S LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.  Company to Furnish Trustee Names and Addresses of Holders.

                 With respect to each series of Securities, the Company will
furnish or cause to be furnished to the Trustee:

                 (a)      semi-annually, not more than 15 days after each
         Regular Record Date relating to that series (or, if there is no
         Regular Record Date relating to that series, on January 1 and July 1),
         a list, in such form as the Trustee may reasonably require, of the
         names and addresses of the Holders of that series as of such dates,
         and

                 (b)      at such other times as the Trustee may request in
         writing, within 30 days after the receipt by the Company of any such
         request, a list of similar form and content, such list to be dated as
         of a date not more than 15 days prior to the time such list is
         furnished;

provided, that so long as the Trustee is the Security Registrar, the Company
shall not be required to furnish or cause to be furnished such a list to the
Trustee.  The Company shall otherwise comply with Section 310(a) of the Trust
Indenture Act.

SECTION 702.  Preservation of Information; Communications to Holders.

                 (a)      The Trustee shall preserve, in as current a form as
         is reasonably practicable, the names and addresses of Holders of each
         series contained in the most recent list furnished to the Trustee as
         provided in Section 701 and the names and addresses of Holders of each
         series received by the Trustee in its capacity as Security Registrar,
         if applicable.  The Trustee may destroy any list furnished to it as
         provided in Section 701 upon receipt of a new list so furnished.  The
         Trustee shall otherwise comply with Section 310(a) of the Trust
         Indenture Act.

                 (b)      Holders of Securities may communicate pursuant to
         Section 312(b) the Trust Indenture Act with other Holders with respect
         to their rights under this Indenture or under the Securities.




                                      46
<PAGE>   55
                 (c)      Every Holder of Securities, by receiving and holding
         the same, agrees with the Company and the Trustee that neither the
         Company nor the Trustee nor any agent of either of them shall be held
         accountable by reason of the disclosure of any such information as to
         the names and addresses of the Holders in accordance with Section
         702(b), regardless of the source from which such information was
         derived, and that the Trustee shall not be held accountable by reason
         of mailing any material pursuant to a request made under Section
         702(b).  The Company, the Trustee, the Security Registrar and any
         other Person shall have the protection of Section 312(c) of the Trust
         Indenture Act.

SECTION 703.  Reports by Trustee.

                 (a)      Within 60 days after May 15 of each year after the
         execution of this Indenture, the Trustee shall transmit by mail to
         Holders a brief report dated as of such May 15 that complies with
         Section 313(a) of the Trust Indenture Act.

                 (b)      The Trustee shall comply with Section 313(b) of the
         Trust Indenture Act.

                 (c)      Reports pursuant to this Section shall be transmitted
         by mail as required by Sections 313(c) and 313(d) of the Trust
         Indenture Act:

                          (1)     to all Holders of Securities, as the names
                 and addresses of such Holders appear in the Security Register;

                          (2)     to such Holders of Securities as have, within
                 the two years preceding such transmissions, filed their names
                 and addresses with the Trustee for that purpose; and

                          (3)     except in the case of reports pursuant to
                 Subsection (b) of this Section, to each Holder of a Security
                 whose name and address is preserved at the time by the
                 Trustee, as provided in Section 702(a).

                 (d)      A copy of each report pursuant to Subsection (a) or
         (b) of this Section 703 shall, at the time of its transmission to
         Holders, be filed by the Trustee with each stock exchange upon which
         any Securities are listed, with the Commission and with the Company.
         The Company will notify the Trustee when any Securities are listed on
         any stock exchange.

SECTION 704.  Reports by Company.

                 The Company shall file with the Trustee, within 15 days after
the Company is required to file the same with the Commission, copies of the
annual reports and of the information, documents and other reports (or copies
of such portions of any of the foregoing as the Commission may from time to
time by rules and regulations prescribe) which the Company may be required to
file with the Commission pursuant to Section 13 or Section 15(d) of the
Securities Exchange Act of 1934, as amended, and shall otherwise comply with
Section 314(a) of the Trust Indenture Act.




                                      47
<PAGE>   56
                                 ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms.

                 The Company shall not consolidate with or merge into any other
Person or convey, transfer or lease its properties and assets substantially as
an entirety to any Person, unless:

                 (1)      the Person formed by such consolidation or into which
         the Company is merged or the Person which acquires by conveyance or
         transfer, or which leases, the properties and assets of the Company
         substantially as an entirety shall be a corporation, partnership or
         trust and shall expressly assume, by an indenture supplemental hereto,
         executed and delivered to the Trustee, in form satisfactory to the
         Trustee, the due and punctual payment of the principal of (and
         premium, if any) and interest on and any Additional Amounts with
         respect to all the Securities and the performance of every covenant of
         this Indenture on the part of the Company to be performed or observed;

                 (2)      immediately after giving effect to such transaction,
         no Event of Default, and no event, act or condition which, after
         notice or lapse of time or both, would become an Event of Default,
         shall have happened and be continuing; and

                 (3)      the Company shall have delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that
         such consolidation, merger, conveyance, transfer or lease and, if a
         supplemental indenture is required in connection with such
         transaction, such supplemental indenture comply with this Article and
         that all conditions precedent herein provided for relating to such
         transaction have been complied with.

SECTION 802.  Successor Person Substituted.

                 Upon any consolidation by the Company with or merger by the
Company into any other Person or any conveyance, transfer or lease of the
properties and assets of the Company substantially as an entirety in accordance
with Section 801, the successor Person formed by such consolidation or into
which the Company is merged or to which such conveyance, transfer or lease is
made shall succeed to, and be substituted for, and may exercise every right and
power of, the Company under this Indenture with the same effect as if such
successor Person had been named as the Company herein, and thereafter, except
in the case of such lease, the predecessor Person shall be relieved of all
obligations and covenants under this Indenture and the Securities.




                                      48
<PAGE>   57
                                  ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders.

                 Without the consent of any Holders, the Company, when
authorized by a Board Resolution, and the Trustee, at any time and from time to
time, may enter into one or more indentures supplemental hereto, in form
satisfactory to the Trustee, for any of the following purposes:

                 (1)      to evidence the succession of another Person to the
         Company and the assumption by any such successor of the covenants of
         the Company herein and in the Securities; or

                 (2)      to add to the covenants of the Company for the
         benefit of the Holders of all or any series of Securities (and if such
         covenants are to be for the benefit of less than all series of
         Securities, stating that such covenants are expressly being included
         solely for the benefit of such series), to convey, transfer, assign,
         mortgage or pledge any property to or with the Trustee or otherwise
         secure any series of the Securities or to surrender any right or power
         herein conferred upon the Company; or

                 (3)      to add any additional Events of Default with respect
         to all or any series of the Securities (and, if such Event of Default
         is applicable to less than all series of Securities, specifying the
         series to which such Event of Default is applicable); or

                 (4)      to change or eliminate any of the provisions of this
         Indenture, provided that any such change or elimination shall become
         effective only when there is no Security Outstanding of any series
         created prior to the execution of such supplemental indenture which is
         adversely affected by such change in or elimination of such provision;
         or

                 (5)      to establish the form or terms of Securities of any
         series as permitted by Sections 201 and 301; or

                 (6)      to supplement any of the provisions of this Indenture
         to such extent as shall be necessary to permit or facilitate the
         defeasance and discharge of any series of Securities pursuant to
         Section 401; provided, however, that any such action shall not
         adversely affect the interest of the Holders of Securities of such
         series or any other series of Securities in any material respect; or

                 (7)      to evidence and provide for the acceptance of
         appointment hereunder by a successor Trustee with respect to the
         Securities of one or more series and to add to or change any of the
         provisions of this Indenture as shall be necessary to provide for or
         facilitate the administration of the trusts hereunder by more than one
         Trustee, pursuant to the requirements of Section 611(b); or




                                      49
<PAGE>   58
                 (8)      to cure any ambiguity, to correct or supplement any
         provision herein which may be defective or inconsistent with any other
         provision herein, or to make any other provisions with respect to
         matters or questions arising under this Indenture, provided such other
         provisions as may be made shall not adversely affect the interests of
         the Holders of Securities of any series in any material respect.

SECTION 902.  Supplemental Indentures With Consent of Holders.

                 With the consent of the Holders of a majority in principal
amount of the Outstanding Securities of all series affected by such
supplemental indenture (acting as one class), by Act of said Holders delivered
to the Company and the Trustee, the Company, when authorized by a Board
Resolution, and the Trustee may enter into an indenture or indentures
supplemental hereto for the purpose of adding any provisions to or changing in
any manner or eliminating any of the provisions of this Indenture or of
modifying in any manner the rights of the Holders of Securities of such series
under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected
thereby,

                 (1)      change the Stated Maturity of the principal of, or
         any installment of principal of or interest on, any Security, or
         reduce the principal amount thereof or the rate of interest thereon,
         any Additional Amounts with respect thereto or any premium payable
         upon the redemption thereof, or change any obligation of the Company
         to pay Additional Amounts (except as contemplated by Section 801(1)
         and permitted by Section 901(1)), or reduce the amount of the
         principal of an Original Issue Discount Security that would be due and
         payable upon a declaration of acceleration of the Maturity thereof
         pursuant to Section 502, or change any Place of Payment where, or the
         coin or currency or currencies (including composite currencies) in
         which, any Security or any premium or any interest thereon or
         Additional Amounts with respect thereto is payable, or impair the
         right to institute suit for the enforcement of any such payment on or
         after the Stated Maturity thereof (or, in the case of redemption, on
         or after the Redemption Date), or

                 (2)      reduce the percentage in principal amount of
         Outstanding Securities, the consent of whose Holders is required for
         any such supplemental indenture, or the consent of whose Holders is
         required for any waiver (of compliance with certain provisions of this
         Indenture or certain defaults hereunder and their consequences)
         provided for in this Indenture, or

                 (3)      modify any of the provisions of this Section, Section
         512 or Section 1006, except to increase any such percentage or to
         provide with respect to any particular series the right to condition
         the effectiveness of any supplemental indenture as to that series on
         the consent of the Holders of a specified percentage of the aggregate
         principal amount of Outstanding Securities of such series (which
         provision may be made pursuant to Section 301 without the consent of
         any Holder) or to provide that certain other provisions of this
         Indenture cannot be modified or waived without the consent of the
         Holder of each Outstanding Security affected thereby, provided,
         however, that this clause shall not be deemed to require the consent
         of any Holder with respect to changes in the references to "the




                                      50
<PAGE>   59
         Trustee" and concomitant changes in this Section and Section 1006, or
         the deletion of this proviso, in accordance with the requirements of
         Sections 611(b) and 901(7).

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such
covenant or other provision, shall be deemed not to affect the rights under
this Indenture of the Holders of Securities of any other series.

                 It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

SECTION 903.  Execution of Supplemental Indentures.

                 In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and (subject to Section 601) shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture.  The Trustee may, but
shall not be obligated to, enter into any such supplemental indenture which
affects the Trustee's own rights, duties, immunities or liabilities under this
Indenture or otherwise.

SECTION 904.  Effect of Supplemental Indentures.

                 Upon the execution of any supplemental indenture under this
Article, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Securities theretofore or thereafter authenticated and
delivered hereunder shall be bound thereby.

SECTION 905.  Conformity With Trust Indenture Act.

                 Every supplemental indenture executed pursuant to this Article
shall conform to the requirements of the Trust Indenture Act as then in effect.

SECTION 906.  Reference in Securities to Supplemental Indentures.

                 Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture.  If the Company
shall so determine, new Securities of any series so modified as to conform, in
the opinion of the Trustee and the Company, to any such supplemental indenture
may be prepared and executed by the Company and authenticated and delivered by
the Trustee in exchange for Outstanding Securities of such series.




                                      51
<PAGE>   60
                                  ARTICLE TEN

                                   COVENANTS

SECTION 1001.  Payment of Principal, Premium and Interest.

                 The Company covenants and agrees for the benefit of each
series of Securities that it will duly and punctually pay the principal of (and
premium, if any), interest on and any Additional Amounts with respect to the
Securities of that series in accordance with the terms of the Securities and
this Indenture.

SECTION 1002.  Maintenance of Office or Agency.

                 The Company will maintain in each Place of Payment for any
series of Securities an office or agency where Securities of that series may be
presented or surrendered for payment, where Securities of that series may be
surrendered for registration of transfer or exchange and where notices and
demands to or upon the Company in respect of the Securities of that series and
this Indenture may be served.  The Company will give prompt written notice to
the Trustee of the location, and any change in the location, of such office or
agency.  If at any time the Company shall fail to maintain any such required
office or agency or shall fail to furnish the Trustee with the address thereof,
such presentations, surrenders, notices and demands may be made or served at
the Corporate Trust Office of the Trustee.

                 The Company may also from time to time designate one or more
other offices or agencies where the Securities of one or more series may be
presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that no such designation or
rescission shall in any manner relieve the Company of its obligation to
maintain an office or agency in each Place of Payment for Securities of any
series for such purposes.  The Company will give prompt written notice to the
Trustee of any such designation or rescission and of any change in the location
of any such other office or agency.

SECTION 1003.  Money for Securities Payments to be Held in Trust.

                 If the Company shall at any time act as its own Paying Agent
with respect to any series of Securities, it will, on or before each due date
of the principal of (and premium, if any) or interest on or any Additional
Amounts with respect to any of the Securities of that series, segregate and
hold in trust for the benefit of the Persons entitled thereto a sum sufficient
to pay the principal (and premium, if any) or interest or any Additional
Amounts so becoming due until such sums shall be paid to such Persons or
otherwise disposed of as herein provided and will promptly notify the Trustee
of its action or failure so to act.

                 Whenever the Company shall have one or more Paying Agents for
any series of Securities, the Company will, on or before each due date of the
principal of (and premium, if any) or interest on any Securities of that
series, deposit with a Paying Agent a sum sufficient to pay the principal (and
premium, if any) or interest so becoming due, such sum to be held in trust for
the




                                      52
<PAGE>   61
benefit of the Persons entitled to such principal, premium or interest, and
(unless such Paying Agent is the Trustee) the Company will promptly notify the
Trustee of its action or failure so to act.

                 The Company will cause each Paying Agent for any series of
Securities other than the Trustee to execute and deliver to the Trustee an
instrument in which such Paying Agent shall agree with the Trustee, subject to
the provisions of this Section, that such Paying Agent will:

                 (1)      hold all sums held by it for the payment of the
         principal of (and premium, if any), interest on or any Additional
         Amounts with respect to Securities of that series in trust for the
         benefit of the Persons entitled thereto until such sums shall be paid
         to such Persons or otherwise disposed of as herein provided;

                 (2)      give the Trustee notice of any default by the Company
         (or any other obligor upon the Securities of that series) in the
         making of any payment of principal (and premium, if any), interest on
         or any Additional Amounts with respect to the Securities of that
         series; and

                 (3)      at any time during the continuance of any such
         default, upon the written request of the Trustee, forthwith pay to the
         Trustee all sums so held in trust by such Paying Agent.

                 The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held
in trust by the Company or such Paying Agent, such sums to be held by the
Trustee upon the same trusts as those upon which sums were held by the Company
or such Paying Agent; and, upon such payment by any Paying Agent to the
Trustee, such Paying Agent shall be released from all further liability with
respect to such money.

                 Any money deposited with the Trustee or any Paying Agent, or
then held by the Company, in trust for the payment of the principal of (and
premium, if any) or interest on or any Additional Amounts with respect to any
Security of any series and remaining unclaimed for three years after such
principal (and premium, if any) or interest or Additional Amounts have become
due and payable shall, unless otherwise required by mandatory provisions of
applicable escheat, or abandoned or unclaimed property law, be paid to the
Company on Company Request, or (if then held by the Company) shall be
discharged from such trust; and the Holder of such Security shall thereafter,
as an unsecured general creditor, look only to the Company for payment thereof,
and all liability of the Trustee or such Paying Agent with respect to such
trust money, and all liability of the Company as trustee thereof, shall
thereupon cease; provided, however, that the Trustee or such Paying Agent,
before being required to make any such repayment, may at the expense of the
Company cause to be published once, in an Authorized Newspaper in The Borough
of Manhattan, The City of New York and in such other Authorized Newspapers as
the Trustee shall deem appropriate, notice that such money remains unclaimed
and that, after a date specified therein, which shall not be less than 30 days
from the date of such publication, any unclaimed balance of such money then
remaining will, unless otherwise required by mandatory provisions of applicable
escheat, or abandoned or unclaimed property law, be repaid to the Company.




                                      53
<PAGE>   62
SECTION 1004.  Existence.

                 Subject to Article Eight, the Company will do or cause to be
done all things necessary to preserve and keep in full force and effect its
corporate existence.

SECTION 1005.  Statement by Officers as to Default.

                 The Company will deliver to the Trustee, within 120 days after
the end of each fiscal year of the Company ending after the date hereof so long
as any Security is outstanding hereunder, an Officers' Certificate complying
with Section 314(a) of the Trust Indenture Act, stating that a review of the
activities of the Company during such year and of performance under this
Indenture has been made under the supervision of the signers thereof and
whether or not to the best of their knowledge, based upon such review, the
Company is in default in the performance, observance or fulfillment of any of
its covenants and other obligations under this Indenture, and if the Company
shall be in default, specifying each such default known to them and the nature
and status thereof.  One of the officers signing the Officers' Certificate
delivered pursuant to this Section 1005 shall be the principal executive,
financial or accounting officer of the Company.

                 For purposes of this Section, such compliance shall be
determined without regard to any period of grace or requirement of notice
provided under this Indenture.

SECTION 1006.  Waiver of Certain Covenants.

                 The Company may omit in any particular instance to comply with
any covenant or condition set forth in Section 1004, or any covenant added for
the benefit of any series of Securities as contemplated by Section 301 (unless
otherwise specified pursuant to Section 301) if before or after the time for
such compliance the Holders of a majority in principal amount of the
Outstanding Securities of all series affected by such omission (acting as one
class) shall, by Act of such Holders, either waive such compliance in such
instance or generally waive compliance with such covenant or condition, but no
such waiver shall extend to or affect such covenant or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company and the duties of the Trustee in respect of any such
covenant or condition shall remain in full force and effect.

SECTION 1007.  Additional Amounts.

                 If the Securities of a series expressly provide for the
payment of Additional Amounts, the Company will pay to the Holder of any
Security of such series Additional Amounts as expressly provided therein.
Whenever in this Indenture there is mentioned, in any context, the payment of
the principal of or any premium or interest on, or in respect of, any Security
of any series or the net proceeds received from the sale or exchange of any
Security of any series, such mention shall be deemed to include mention of the
payment of Additional Amounts provided for in this Section to the extent that,
in such context, Additional Amounts are, were or would be payable in respect
thereof pursuant to the provisions of this Section and express mention of the
payment of Additional




                                      54
<PAGE>   63
Amounts (if applicable) in any provisions hereof shall not be construed as
excluding Additional Amounts in those provisions hereof where such express
mention is not made.

                 If the Securities of a series provide for the payment of
Additional Amounts, at least 10 days prior to the FIRST Interest Payment Date
with respect to that series of Securities (or if the Securities of that series
will not bear interest prior to Maturity, the first day on which a payment of
principal and any premium is made), and at least 10 days prior to each date of
payment of principal and any premium or interest if there has been any change
with respect to the matters set forth in the below-mentioned Officers'
Certificate, the Company shall furnish the Trustee and the Company's principal
Paying Agent or Paying Agents, if other than the Trustee, with an Officers'
Certificate instructing the Trustee and such Paying Agent or Paying Agents
whether such payment of principal of and any premium or interest on the
Securities of that series shall be made to Holders of Securities of that series
who are United States Aliens without withholding for or on account of any tax,
assessment or other governmental charge described in the Securities of that
series.  If any such withholding shall be required, then such Officers'
Certificate shall specify by country the amount, if any, required to be
withheld on such payments to such Holders of Securities and the Company will
pay to such Paying Agent the Additional Amounts required by this Section.  The
Company covenants to indemnify the Trustee and any Paying Agent for, and to
hold them harmless against any loss, liability or expense reasonably incurred
without negligence or bad faith on their part arising out of or in connection
with actions taken or omitted by any of them in reliance on any Officers'
Certificate furnished pursuant to this Section 1007.

                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

SECTION 1101.  Applicability of Article.

                 Securities of any series which are redeemable before their
Stated Maturity shall be redeemable in accordance with their terms and (except
as otherwise specified as contemplated by Section 301 for Securities of any
series) in accordance with this Article.

SECTION 1102.  Election to Redeem; Notice to Trustee.

                 Unless otherwise provided with respect to the Securities of a
series as contemplated by Section 301, the election of the Company to redeem
any Securities shall be evidenced by a Board Resolution.  In case of any
redemption at the election of the Company of less than all the Securities of
any series, the Company shall, a reasonable period prior to the Redemption Date
fixed by the Company (unless a shorter notice shall be satisfactory to the
Trustee), notify the Trustee of such Redemption Date and of the principal
amount of Securities of such series to be redeemed.  In the case of any
redemption of Securities prior to the expiration of any restriction on such
redemption provided in the terms of such Securities or elsewhere in this
Indenture, the Company shall furnish the Trustee with an Officers' Certificate
evidencing compliance with such restriction.




                                      55
<PAGE>   64
SECTION 1103.  Selection by Trustee of Securities to be Redeemed.

                 If less than all the Securities of any series are to be
redeemed, the particular Securities to be redeemed shall be selected not more
than 60 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series not previously called for redemption, by such method
as the Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series or of the
principal amount of global Securities of such series.

                 The Trustee shall promptly notify the Company and the Security
Registrar in writing of the Securities selected for redemption and, in the case
of any Securities selected for partial redemption, the principal amount thereof
to be redeemed.

                 For all purposes of this Indenture, unless the context
otherwise requires, all provisions relating to the redemption of Securities
shall relate, in the case of any Securities redeemed or to be redeemed only in
part, to the portion of the principal amount of such Securities which has been
or is to be redeemed.

SECTION 1104.  Notice of Redemption.

                 Notice of redemption shall be given in the manner provided in
Section 107 to each Holder of Securities to be redeemed not less than 30 nor
more than 60 days prior to the Redemption Date.

                 All notices of redemption shall state:

                 (1)      the Redemption Date;

                 (2)      the Redemption Price;

                 (3)      if less than all the Outstanding Securities of any
         series are to be redeemed, the identification (and, in the case of
         partial redemption, the principal amounts) of the particular
         Securities to be redeemed;

                 (4)      that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and, if
         applicable, that interest thereon will cease to accrue on and after
         said date;

                 (5)      the place or places where such Securities are to be
         surrendered for payment of the Redemption Price;

                 (6)      that the redemption is for a sinking fund, if such is
         the case; and




                                      56
<PAGE>   65
                 (7)      the "CUSIP" number, if applicable.

                 A notice of redemption as contemplated by Section 107 need not
identify particular Securities to be redeemed.  Notice of redemption of
Securities to be redeemed at the election of the Company shall be given by the
Company or, at the Company's request, by the Trustee in the name and at the
expense of the Company.

SECTION 1105.  Deposit of Redemption Price.

                 On or before [TIME], [CITY, STATE], time, on any Redemption
Date, the Company shall deposit with the Trustee or with a Paying Agent (or, if
the Company is acting as its own Paying Agent, segregate and hold in trust as
provided in Section 1003) an amount of money sufficient to pay the Redemption
Price of, and (except if the Redemption Date shall be an Interest Payment Date)
accrued interest on, and any Additional Amounts with respect to, all the
Securities which are to be redeemed on that date.

SECTION 1106.  Securities Payable on Redemption Date.

                 Notice of redemption having been given as aforesaid, the
Securities so to be redeemed shall, on the Redemption Date, become due and
payable at the Redemption Price therein specified, and from and after such date
(unless the Company shall default in the payment of the Redemption Price and
accrued interest) such Securities shall cease to bear interest.  Upon surrender
of any such Security for redemption in accordance with said notice, such
Security shall be paid by the Company at the Redemption Price, together with
accrued interest (and any Additional Amounts) to the Redemption Date; provided,
however, that installments of interest whose Stated Maturity is on or prior to
the Redemption Date shall be payable to the Holders of such Securities, or one
or more Predecessor Securities, registered as such at the close of business on
the relevant Record Dates according to their terms and the provisions of
Section 307.

                 If any Security called for redemption shall not be so paid
upon surrender thereof for redemption, the principal (and premium, if any)
shall, until paid, bear interest from the Redemption Date at the rate
prescribed therefor in the Security or, in the case of Original Issue Discount
Securities, the Securities' Yield to Maturity.

SECTION 1107.  Securities Redeemed in Part.

                 Any Security which is to be redeemed only in part shall be
surrendered at a Place of Payment therefor (with, if the Company or the Trustee
so requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company and the Trustee duly executed by, the Holder
thereof or his attorney duly authorized in writing), and the Company shall
execute, and the Trustee shall authenticate and deliver to the Holder of such
Security without service charge, a new Security or Securities of the same
series and Stated Maturity, of any authorized denomination as requested by such
Holder, in aggregate principal amount equal to and in exchange for the
unredeemed portion of the principal of the Security so surrendered.




                                      57
<PAGE>   66
SECTION 1108.  Purchase of Securities.

                 Unless otherwise specified as contemplated by Section 301, the
Company and any Affiliate of the Company may at any time purchase or otherwise
acquire Securities in the open market or by private agreement.  Such
acquisition shall not operate as or be deemed for any purpose to be a
redemption of the indebtedness represented by such Securities.  Any Securities
purchased or acquired by the Company may be delivered to the Trustee and, upon
such delivery, the indebtedness represented thereby shall be deemed to be
satisfied.  Section 309 shall apply to all Securities so delivered.

                                 ARTICLE TWELVE

                                 SINKING FUNDS

SECTION 1201.  Applicability of Article.

                 The provisions of this Article shall be applicable to any
sinking fund for the retirement of Securities of a series except as otherwise
specified as contemplated by Section 301 for Securities of such series.

                 The minimum amount of any sinking fund payment provided for by
the terms of Securities of any series is herein referred to as a "mandatory
sinking fund payment," and any payment in excess of such minimum amount
provided for by the terms of Securities of any series is herein referred to as
an "optional sinking fund payment."  Unless otherwise provided by the terms of
Securities of any series, the cash amount of any sinking fund payment may be
subject to reduction as provided in Section 1202.  Each sinking fund payment
shall be applied to the redemption of Securities of any series as provided for
by the terms of Securities of such series.

SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities.

                 The Company (1) may deliver Outstanding Securities of a series
(other than any previously called for redemption), and (2) may apply as a
credit Securities of a series which have been redeemed either at the election
of the Company pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms
of such Securities, in each case in satisfaction of all or any part of any
sinking fund payment with respect to the Securities of such series required to
be made pursuant to the terms of such Securities as provided for by the terms
of such series; provided that such Securities have not been previously so
credited.  Such Securities shall be received and credited for such purpose by
the Trustee at the Redemption Price specified in such Securities for redemption
through operation of the sinking fund and the amount of such sinking payment
shall be reduced accordingly.

SECTION 1203.  Redemption of Securities for Sinking Fund.

                 Not less than 45 days prior (unless a shorter period shall be
satisfactory to the Trustee) to each sinking fund payment date for any series
of Securities, the Company will deliver




                                      58
<PAGE>   67
to the Trustee an Officers' Certificate specifying the amount of the next
ensuing sinking fund payment for that series pursuant to the terms of that
series, the portion thereof, if any, which is to be satisfied by payment of
cash and the portion thereof, if any, which is to be satisfied by delivery of
or by crediting Securities of that series pursuant to Section 1202 and will
also deliver to the Trustee any Securities to be so delivered.  Not less than
30 days before each such sinking fund payment date the Trustee shall select the
Securities to be redeemed upon such sinking fund payment date in the manner
specified in Section 1103 and cause notice of the redemption thereof to be
given in the name of and at the expense of the Company in the manner provided
in Section 1104.  Such notice having been duly given, the redemption of such
Securities shall be made upon the terms and in the manner stated in Sections
1106 and 1107.

                                ARTICLE THIRTEEN

                       MEETINGS OF HOLDERS OF SECURITIES

SECTION 1301.  Purposes for Which Meetings May Be Called.

                 A meeting of Holders of Securities of any or all series may be
called at any time and from time to time pursuant to this Article to make, give
or take any request, demand, authorization, direction, notice, consent, waiver
or other action provided by this Indenture to be made, given or taken by
Holders of Securities of such series.

SECTION 1302.  Call, Notice and Place of Meetings.

                 (a)      The Trustee may at any time call a meeting of Holders
of Securities of any series for any purpose specified in Section 1301, to be
held at such time and at such place in [CITY, STATE], or in any other location,
as the Trustee shall determine.  Notice of every meeting of Holders of
Securities of any series, setting forth the time and the place of such meeting
and in general terms the action proposed to be taken at such meeting, shall be
given, in the manner provided in Section 107, not less than 20 nor more than
180 days prior to the date fixed for the meeting.

                 (b)      In case at any time the Company, pursuant to a Board
Resolution, or the Holders of at least 10% in aggregate principal amount of the
Outstanding Securities of any series, shall have requested the Trustee for any
such series to call a meeting of the Holders of Securities of such series for
any purpose specified in Section 1301, by written request setting forth in
reasonable detail the action proposed to be taken at the meeting, and the
Trustee shall not have made the first publication of the notice of such meeting
within 30 days after receipt of such request or shall not thereafter proceed to
cause the meeting to be held as provided herein, then the Company or the
Holders of Securities of such series in the amount above specified, as the case
may be, may determine the time and the place in [CITY, STATE], for such meeting
and may call such meeting for such purposes by giving notice thereof as
provided in Subsection (a) of this Section.




                                      59
<PAGE>   68
SECTION 1303.  Persons Entitled to Vote at Meetings.

                 To be entitled to vote at any meeting of Holders of Securities
of any series, a Person shall be (1) a Holder of one or more Outstanding
Securities of such series, or (2) a Person appointed by an instrument in
writing as proxy for a Holder or Holders of one or more Outstanding Securities
of such series by such Holder or Holders.  The only Persons who shall be
entitled to be present or to speak at any meeting of Holders of Securities of
any series shall be the Persons entitled to vote at such meeting and their
counsel, any representatives of the Trustee and its counsel and any
representatives of the Company and its counsel.

SECTION 1304.  Quorum; Action.

                 The Persons entitled to vote a majority in aggregate principal
amount of the Outstanding Securities of a series shall constitute a quorum for
a meeting of Holders of Securities of such series.  In the absence of a quorum
within 30 minutes of the time appointed for any such meeting, the meeting
shall, if convened at the request of Holders of Securities of such series, be
dissolved.  In any other case, the meeting may be adjourned for a period of not
less than 10 days as determined by the chairman of the meeting prior to the
adjournment of such meeting.  In the absence of a quorum at any such adjourned
meeting, such adjourned meeting may be further adjourned for a period of not
less than 10 days as determined by the chairman of the meeting prior to the
adjournment of such adjourned meeting.  Subject to Section 1305(d), notice of
the reconvening of any adjourned meeting shall be given as provided in Section
1302(a), except that such notice need be given only once not less than five
days prior to the date on which the meeting is scheduled to be reconvened.
Notice of the reconvening of an adjourned meeting shall state expressly that
Persons entitled to vote a majority in principal amount of the Outstanding
Securities of such series shall constitute a quorum.

                 Except as limited by the first proviso to Section 902, any
resolution presented to a meeting or adjourned meeting duly reconvened at which
a quorum is present as aforesaid may be adopted by the affirmative vote of the
Holders of a majority in aggregate principal amount of the Outstanding
Securities of that series; provided, however, that, except as limited by the
first proviso to Section 902, any resolution with respect to any request,
demand, authorization, direction, notice, consent or waiver which this
Indenture expressly provides may be made, given or taken by the Holders of a
specified percentage that is less than a majority in aggregate principal amount
of the Outstanding Securities of a series may be adopted at a meeting or an
adjourned meeting duly reconvened and at which a quorum is present as aforesaid
by the affirmative vote of the Holders of such specified percentage in
aggregate principal amount of the Outstanding Securities of that series.

                 Except as limited by the first proviso to Section 902, any
resolution passed or decision taken at any meeting of Holders of Securities of
any series duly held in accordance with this Section shall be binding on all
the Holders of Securities of such series, whether or not present or represented
at the meeting.




                                      60
<PAGE>   69
SECTION 1305.  Determination of Voting Rights; Conduct and Adjournment of
Meetings.

                 (a)      The holding of Securities shall be proved in the
         manner specified in Section 105 and the appointment of any proxy shall
         be proved in the manner specified in Section 105.  Such regulations
         may provide that written instruments appointing proxies, regular on
         their face, may be presumed valid and genuine without the proof
         specified in Section 105 or other proof.

                 (b)      The Trustee shall, by an instrument in writing,
         appoint a temporary chairman of the meeting, unless the meeting shall
         have been called by the Company or by Holders of Securities as
         provided in Section 1302(b), in which case the Company or the Holders
         of Securities of the series calling the meeting, as the case may be,
         shall appoint a temporary chairman.  A permanent chairman and a
         permanent secretary of the meeting shall be elected by vote of the
         Persons entitled to vote a majority in aggregate principal amount of
         the Outstanding Securities of such series represented at the meeting.

                 (c)      At any meeting each Holder of a Security of such
         series and each proxy shall be entitled to one vote for each $1,000
         principal amount of the Outstanding Securities of such series held or
         represented by him; provided, however, that no vote shall be cast or
         counted at any meeting in respect of any Security challenged as not
         Outstanding and ruled by the chairman of the meeting to be not
         Outstanding.  The chairman of the meeting shall have no right to vote,
         except as a Holder of a Security of such series or as a proxy.

                 (d)      Any meeting of Holders of Securities of any series
         duly called pursuant to Section 1302 at which a quorum is present may
         be adjourned from time to time by Persons entitled to vote a majority
         in aggregate principal amount of the Outstanding Securities of such
         series represented at the meeting; and the meeting may be held as so
         adjourned without further notice.

SECTION 1306.  Counting Votes and Recording Action of Meetings.

                 The vote upon any resolution submitted to any meeting of
Holders of Securities of any series shall be by written ballots on which shall
be subscribed the signatures of the Holders of Securities of such series or of
their representatives by proxy and the principal amounts and serial numbers of
the Outstanding Securities of such series held or represented by them.  The
permanent chairman of the meeting shall appoint two inspectors of votes who
shall count all votes cast at the meeting for or against any resolution and who
shall make and file with the secretary of the meeting their verified written
reports in duplicate of all votes cast at the meeting.  A record, at least in
duplicate, of the proceedings of each meeting of Holders of Securities of any
series shall be prepared by the secretary of the meeting and there shall be
attached to such record the original reports of the inspectors of votes on any
vote by ballot taken thereat and affidavits by one or more persons having
knowledge of the facts setting forth a copy of the notice of the meeting and
showing that such notice was given as provided in Section 1302 and, if
applicable, Section 1304.  Each copy shall be signed and verified by the
affidavits of the permanent chairman and secretary of the meeting and one such
copy shall be delivered to the Company, and another to the Trustee to be
preserved by the Trustee,




                                      61
<PAGE>   70
the latter to have attached thereto the ballots voted at the meeting.  Any
record so signed and verified shall be conclusive evidence of the matters
therein stated.

                             *         *          *

                 This instrument may be executed in any number of counterparts,
each of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.

                 IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed as of the day and year first above written.

                                        KEY ENERGY GROUP, INC.


                                        By______________________________________
                                             Name:
                                             Title:



                                        [TRUSTEE], Trustee



                                        By______________________________________
                                             Name:
                                             Title:





                                      62

<PAGE>   1
                                                                     EXHIBIT 4.2



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



                             KEY ENERGY GROUP, INC.

                                       AND

                                   [TRUSTEE],

                                     TRUSTEE


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


                                    INDENTURE

                                   DATED AS OF

                          _______________________, 1998


                                 DEBT SECURITIES
                               (SUBORDINATED DEBT)




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

<PAGE>   2

                             Key Energy Group, Inc.

           Reconciliation and tie between Trust Indenture Act of 1939
               and Indenture, dated as of _________________, 1998


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

<TABLE>
<CAPTION>
Section of
Trust Indenture                                                                                   Section(s) of
Act of 1939                                                                                         Indenture
- -----------                                                                                         ---------

<S>      <C>                                                                                        <C>
ss.310   (a)(1)...............................................................................      609
         (a)(2)...............................................................................      609
         (a)(3)...............................................................................      Not Applicable
         (a)(4)...............................................................................      Not Applicable
         (b)..................................................................................      608, 610
ss.311   (a)..................................................................................      613
         (b)..................................................................................      613
         (c)..................................................................................      Not Applicable
ss.312   (a)..................................................................................      701, 702(a)
         (b)..................................................................................      702(b)
         (c)..................................................................................      702(c)
ss.313   (a)..................................................................................      703(a)
         (b)..................................................................................      703(b)
         (c)..................................................................................      703(c)
         (d)..................................................................................      703(d)
ss.314   (a)..................................................................................      704, 1005
         (b)..................................................................................      Not Applicable
         (c)(1)...............................................................................      103
         (c)(2)...............................................................................      103
         (c)(3)...............................................................................      Not Applicable
         (d)..................................................................................      Not Applicable
         (e)..................................................................................      103
ss.315   (a)..................................................................................      601(a)
         (b)..................................................................................      602
         (c)..................................................................................      601(b)
         (d)..................................................................................      601(c)
         (d)(1)...............................................................................      601(a)(1)
         (d)(2)...............................................................................      601(c)(2)
         (d)(3)...............................................................................      601(c)(3)
         (e)..................................................................................      513
ss.316   (a)(1)(A)............................................................................      502, 511
         (a)(1)(B)............................................................................      512
         (a)(2)...............................................................................      Not Applicable
         (a)(last sentence)...................................................................      101
         (b)..................................................................................      508
ss.317   (a)(1)...............................................................................      503
         (a)(2)...............................................................................      504
         (b)..................................................................................      1003
ss.318   (a)..................................................................................      108
</TABLE>



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

Note: This reconciliation and tie shall not, for any purpose, be deemed to be a
part of the Indenture.


<PAGE>   3


                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                               Page
                                                                                                               ----
<S>                                                                                                              <C>
RECITALS OF THE COMPANY...........................................................................................1

                                                            ARTICLE ONE
                                                 DEFINITIONS AND OTHER PROVISIONS
                                                      OF GENERAL APPLICATION

SECTION 101.  Definitions.........................................................................................1
         Act .....................................................................................................2
         Additional Amounts.......................................................................................2
         Affiliate................................................................................................2
         Agent Members............................................................................................2
         Authenticating Agent.....................................................................................2
         Authorized Newspaper.....................................................................................2
         Board of Directors.......................................................................................2
         Board Resolution.........................................................................................2
         Business Day.............................................................................................3
         Capital Stock............................................................................................3
         Capitalized Lease Obligation.............................................................................3
         Commission...............................................................................................3
         Company  ................................................................................................3
         Company Request" and "Company Order......................................................................3
         Conversion Event.........................................................................................3
         Corporate Trust Office...................................................................................3
         Defaulted Interest.......................................................................................3
         Depositary...............................................................................................3
         Designated Senior Indebtedness...........................................................................4
         Disqualified Capital Stock...............................................................................4
         Dollar ..................................................................................................4
         Event of Default.........................................................................................4
         Exchange Rate............................................................................................4
         Holder ..................................................................................................4
         Indebtedness.............................................................................................4
         Indenture................................................................................................5
         interest ................................................................................................5
         Interest Payment Date....................................................................................5
         Interest Swap and Hedging Obligation.....................................................................5
         Judgment Currency........................................................................................5
         Junior security..........................................................................................5
         Maturity ................................................................................................5
         Officers' Certificate....................................................................................5
</TABLE>



                                        i

<PAGE>   4

<TABLE>
<CAPTION>
                                                                                                                Page
                                                                                                                ----
<S>                                                                                                              <C>

         Opinion of Counsel.......................................................................................5
         Original Issue Discount Security.........................................................................6
         Outstanding..............................................................................................6
         Paying Agent.............................................................................................7
         Payment Default..........................................................................................7
         Payment Notice...........................................................................................7
         Person   ................................................................................................7
         Place of Payment.........................................................................................7
         Predecessor Security.....................................................................................7
         Qualified Capital Stock..................................................................................7
         Redemption Date..........................................................................................7
         Redemption Price.........................................................................................7
         Regular Record Date......................................................................................7
         Required Currency........................................................................................7
         Responsible Officer......................................................................................7
         Securities...............................................................................................8
         Security Custodian.......................................................................................8
         Security Register........................................................................................8
         Senior Indebtedness......................................................................................8
         Special Record Date......................................................................................8
         Stated Maturity..........................................................................................8
         Subsidiary...............................................................................................8
         Trustee  ................................................................................................8
         Trust Indenture Act......................................................................................9
         United States............................................................................................9
         United States Alien......................................................................................9
         U.S. Government Obligations..............................................................................9
         Vice President...........................................................................................9
         Wholly Owned Subsidiary..................................................................................9
         Yield to Maturity........................................................................................9

SECTION 102.  Incorporation by Reference of Trust Indenture Act...................................................9
SECTION 103.  Compliance Certificates and Opinions...............................................................10
SECTION 104.  Form of Documents Delivered to Trustee.............................................................10
SECTION 105.  Acts of Holders; Record Dates......................................................................11
SECTION 106.  Notices, Etc., to Trustee and Company..............................................................12
SECTION 107.  Notice to Holders; Waiver..........................................................................12
SECTION 108.  Conflict With Trust Indenture Act..................................................................13
SECTION 109.  Effect of Headings and Table of Contents...........................................................13
SECTION 110.  Successors and Assigns............................................................................ 13
SECTION 111.  Separability Clause................................................................................13
SECTION 112.  Benefits of Indenture..............................................................................13
</TABLE>



                                       ii

<PAGE>   5
<TABLE>
<CAPTION>
                                                                                                                Page
                                                                                                                ----
<S>                                                                                                              <C>

SECTION 113.  Governing Law......................................................................................14
SECTION 114.  Legal Holidays.....................................................................................14
SECTION 115.  Corporate Obligation...............................................................................14

                                                            ARTICLE TWO
                                                          SECURITY FORMS

SECTION 201.  Forms Generally....................................................................................14
SECTION 202.  Form of Trustee's Certificate of Authentication....................................................15
SECTION 203.  Securities in Global Form..........................................................................15

                                                           ARTICLE THREE
                                                          THE SECURITIES

SECTION 301.  Amount Unlimited; Issuable in Series...............................................................18
SECTION 302.  Denominations......................................................................................21
SECTION 303.  Execution, Authentication Delivery and Dating......................................................21
SECTION 304.  Temporary Securities...............................................................................22
SECTION 305.  Registration, Registration of Transfer and Exchange................................................23
SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities...................................................24
SECTION 307.  Payment of Interest; Interest Rights Preserved.....................................................25
SECTION 308.  Persons Deemed Owners..............................................................................26
SECTION 309.  Cancellation.......................................................................................26
SECTION 310.  Computation of Interest............................................................................26
SECTION 311.  CUSIP Numbers......................................................................................26

                                                           ARTICLE FOUR
                                                    SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture............................................................27
SECTION 402.  Application of Trust Money.........................................................................29
SECTION 403.  Discharge of Liability on Securities of Any Series.................................................29
SECTION 404.  Reinstatement......................................................................................30

                                                           ARTICLE FIVE
                                                             REMEDIES

SECTION 501.  Events of Default..................................................................................30
SECTION 502.  Acceleration of Maturity; Rescission and Annulment.................................................32
SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee....................................33
SECTION 504.  Trustee May File Proofs of Claim...................................................................34
SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or Coupons.............................35
</TABLE>



                                       iii

<PAGE>   6

<TABLE>
<CAPTION>
                                                                                                                Page
                                                                                                                ----
<S>                                                                                                              <C>
SECTION 506.  Application of Money Collected.....................................................................35
SECTION 507.  Limitation on Suits................................................................................36
SECTION 508.  Unconditional Right of Holders to Receive Principal Premium and Interest...........................36
SECTION 509.  Restoration of Rights and Remedies.................................................................37
SECTION 510.  Rights and Remedies Cumulative.....................................................................37
SECTION 511.  Delay or Omission Not Waiver.......................................................................37
SECTION 512.  Control by Holders.................................................................................37
SECTION 513.  Waiver of Past Defaults............................................................................38
SECTION 514.  Undertaking for Costs..............................................................................38
SECTION 515.  Waiver of Stay or Extension Laws...................................................................38

                                                            ARTICLE SIX
                                                            THE TRUSTEE

SECTION 601.  Certain Duties and Responsibilities................................................................39
SECTION 602.  Notice of Defaults.................................................................................40
SECTION 603.  Certain Rights of Trustee..........................................................................40
SECTION 604.  Not Responsible for Recitals or Issuance of Securities.............................................41
SECTION 605.  May Hold Securities................................................................................41
SECTION 606.  Money Held in Trust................................................................................41
SECTION 607.  Compensation and Reimbursement.....................................................................42
SECTION 608.  Disqualification; Conflicting Interests............................................................42
SECTION 609.  Corporate Trustee Required; Eligibility............................................................43
SECTION 610.  Resignation and Removal; Appointment of Successor..................................................43
SECTION 611.  Acceptance of Appointment by Successor.............................................................45
SECTION 612.  Merger, Conversion, Consolidation or Succession to Business........................................46
SECTION 613.  Preferential Collection of Claims Against Company..................................................46
SECTION 614.  Appointment of Authenticating Agent................................................................46

                                                           ARTICLE SEVEN
                                         HOLDER'S LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.  Company to Furnish Trustee Names and Addresses of Holders..........................................48
SECTION 702.  Preservation of Information; Communications to Holders.............................................48
SECTION 703.  Reports by Trustee.................................................................................49
SECTION 704.  Reports by Company.................................................................................49

                                                           ARTICLE EIGHT
                                       CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms...............................................50
SECTION 802.  Successor Person Substituted.......................................................................50
</TABLE>



                                       iv

<PAGE>   7

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                                                           ARTICLE NINE
                                                      SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders.................................................51
SECTION 902.  Supplemental Indentures With Consent of Holders....................................................52
SECTION 903.  Execution of Supplemental Indentures...............................................................53
SECTION 904.  Effect of Supplemental Indentures..................................................................53
SECTION 905.  Conformity With Trust Indenture Act................................................................53
SECTION 906.  Reference in Securities to Supplemental Indentures.................................................53

                                                            ARTICLE TEN
                                                             COVENANTS

SECTION 1001.  Payment of Principal, Premium and Interest........................................................54
SECTION 1002.  Maintenance of Office or Agency...................................................................54
SECTION 1003.  Money for Securities Payments to be Held in Trust.................................................54
SECTION 1004.  Existence.........................................................................................56
SECTION 1005.  Statement by Officers as to Default...............................................................56
SECTION 1006.  Waiver of Certain Covenants.......................................................................56
SECTION 1007.  Additional Amounts................................................................................56

                                                          ARTICLE ELEVEN
                                                     REDEMPTION OF SECURITIES

SECTION 1101.  Applicability of Article..........................................................................57
SECTION 1102.  Election to Redeem; Notice to Trustee.............................................................57
SECTION 1103.  Selection by Trustee of Securities to be Redeemed.................................................58
SECTION 1104.  Notice of Redemption..............................................................................58
SECTION 1105.  Deposit of Redemption Price.......................................................................59
SECTION 1106.  Securities Payable on Redemption Date.............................................................59
SECTION 1107.  Securities Redeemed in Part.......................................................................59
SECTION 1108.  Purchase of Securities............................................................................60

                                                          ARTICLE TWELVE
                                                           SINKING FUNDS

SECTION 1201.  Applicability of Article..........................................................................60
SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities.............................................60
SECTION 1203.  Redemption of Securities for Sinking Fund.........................................................60
</TABLE>



                                        v

<PAGE>   8
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                                                         ARTICLE THIRTEEN
                                                           SUBORDINATION

SECTION 1301.  Securities Subordinated to Senior Indebtedness....................................................61
SECTION 1302.  No Payment on Securities in Certain Circumstances.................................................61
SECTION 1303.  Securities Subordinated to Prior Payment of All Senior Indebtedness
                      on Dissolution, Liquidation or Reorganization..............................................62
SECTION 1304.  Subrogation to Rights of Holders of Senior Indebtedness...........................................63
SECTION 1305.  Obligations of the Company Unconditional..........................................................64
SECTION 1306.  Trustee Entitled to Assume Payments Not Prohibited in Absence of Notice...........................65
SECTION 1307.  Application by Trustee of Amounts Deposited with It...............................................65
SECTION 1308.  Subordination Rights Not Impaired by Acts or Omissions of the
                       Company or Holders of Senior Indebtedness.................................................65
SECTION 1309.  Trustee to Effectuate Subordination of Securities.................................................66
SECTION 1310.  Right of Trustee to Hold Senior Indebtedness......................................................66
SECTION 1311.  Article Thirteen Not to Prevent Events of Default.................................................66
SECTION 1312.  No Fiduciary Duty of Trustee to Holders of Senior Indebtedness....................................66
SECTION 1313.  Article Applicable to Paying Agent................................................................67

                                                         ARTICLE FOURTEEN
                                                 MEETINGS OF HOLDERS OF SECURITIES

SECTION 1401.  Purposes for Which Meetings May Be Called.........................................................67
SECTION 1402.  Call, Notice and Place of Meetings................................................................67
SECTION 1403.  Persons Entitled to Vote at Meetings..............................................................68
SECTION 1404.  Quorum; Action....................................................................................68
SECTION 1405.  Determination of Voting Rights; Conduct and Adjournment of Meetings...............................69
SECTION 1406.  Counting Votes and Recording Action of Meetings...................................................69
</TABLE>



                                       vi

<PAGE>   9


        INDENTURE, dated as of _______________, 1998 between KEY ENERGY GROUP,
INC., a corporation duly organized and existing under the laws of the State of
Maryland (herein called the "Company"), having its principal office at Two Tower
Center, Tenth Floor, East Brunswick, New Jersey 08816, and [TRUSTEE], a
[national banking association], as Trustee (herein called the "Trustee"), the
office of the Trustee at which at the date hereof its corporate trust business
is principally administered being [TRUSTEE'S ADDRESS].

                             RECITALS OF THE COMPANY

        The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured
subordinated debentures, notes or other evidences of indebtedness (herein called
the "Securities"), to be issued in one or more series as in this Indenture
provided.

        This Indenture is subject to the provisions of the Trust Indenture Act
and the rules and regulations of the Commission promulgated thereunder that are
required to be part of this Indenture and, to the extent applicable, shall be
governed by such provisions.

        All things necessary to make this Indenture a valid agreement of the
Company, in accordance with its terms, have been done.

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

        For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually covenanted and agreed, for the
equal and proportionate benefit of all Holders of the Securities or of series
thereof, as follows:

                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

SECTION 101.  Definitions.

        For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

        (1) the terms defined in this Article have the meanings assigned to them
    in this Article and include the plural as well as the singular;

        (2) all accounting terms not otherwise defined herein have the meanings
    assigned to them in accordance with generally accepted accounting principles
    in the United States, and, except as otherwise herein expressly provided,
    the term "generally accepted accounting principles" with respect to any
    computation required or permitted hereunder shall mean such



<PAGE>   10

    accounting principles as are generally accepted in the United States at
    the date of such computation; and

        (3) the words "herein", "hereof" and "hereunder" and other words of
    similar import refer to this Indenture as a whole and not to any particular
    Article, Section or other subdivision.

        Certain terms, used principally in Article Six, are defined in Section
102.

        "Act", when used with respect to any Holder, has the meaning specified
in Section 105.

        "Additional Amounts" means any additional amounts that are required by
the express terms of a Security or by or pursuant to a Board Resolution, under
circumstances specified therein or pursuant thereto, to be paid by the Company
with respect to certain taxes, assessments or other governmental charges imposed
on certain Holders and that are owing to such Holders.

        "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

        "Agent Members" has the meaning specified in Section 203.

        "Authenticating Agent" means any Person, which may include the Company,
authorized by the Trustee to act on behalf of the Trustee pursuant to Section
614 to authenticate Securities of one or more series.

        "Authorized Newspaper" means a newspaper, in the English language or in
an official language of the country of publication, customarily published on
each Business Day, whether or not published on Saturdays, Sundays or holidays,
and of general circulation in the place in connection with which the term is
used or in the financial community of such place. Where successive publications
are required to be made in Authorized Newspapers, the successive publications
may be made in the same or in different newspapers in the same city meeting the
foregoing requirements and in each case on any Business Day.

        "Board of Directors" means either the board of directors of the Company
or any duly authorized committee of that board.

        "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.



                                        2

<PAGE>   11



        "Business Day", when used with respect to any Place of Payment, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

        "Capital Stock" means, with respect to any Person, any and all shares,
interests, rights to purchase (other than convertible or exchangeable
Indebtedness), warrants, options, participations or other equivalents of or
interests (however designated) in stock issued by that Person.

        "Capitalized Lease Obligation" means rental obligations under a lease
that are required to be capitalized for financial reporting purposes in
accordance with generally accepted accounting principles, and the amount of
Indebtedness represented by such obligations shall be the capitalized amount of
such obligations, as determined in accordance with generally accepted accounting
principles.

        "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Securities Exchange Act of 1934, as
amended, or, if at any time after the execution of this instrument such
Commission is not existing and performing the duties now assigned to it under
the Trust Indenture Act, then the body performing such duties at such time.

        "Company" means the Person named as the "Company" in the first paragraph
of this instrument until a successor Person shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Company" shall mean
such successor Person.

        "Company Request" and "Company Order" mean, respectively, a written
request or order signed in the name of the Company by its Chairman of the Board,
its President or a Vice President, and by its Treasurer, an Assistant Treasurer,
its Controller, an Assistant Controller, its Secretary or an Assistant
Secretary, and delivered to the Trustee.

        "Conversion Event" has the meaning specified in Section 501.

        "Corporate Trust Office" means the principal office of the Trustee in
[TRUSTEE'S CITY AND STATE] at which at any particular time its corporate trust
business shall be principally administered, which office at the date hereof is
that indicated in the introductory paragraph of this Indenture.

        "Defaulted Interest" has the meaning specified in Section 307.

        "Depositary" means, with respect to the Securities of any series
issuable or issued in whole or in part in global form, the Person designated as
Depositary by the Company pursuant to Section 301 with respect to the Securities
of such series until a successor Depositary shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Depositary" shall
mean or include each Person who is then a Depositary hereunder, and if at any
time there is more than one such Person, "Depositary" as used with respect to
the Securities of any series shall mean the Depositary with respect to the
Securities of that series.



                                        3

<PAGE>   12



        "Designated Senior Indebtedness," unless otherwise provided with respect
to the Securities of a series as contemplated by Section 301, means any Senior
Indebtedness that (i) in the instrument evidencing the same or the assumption or
guarantee thereof (or related documents to which the Company is a party) is
expressly designated as "Designated Senior Indebtedness" for purposes of this
Indenture and (ii) satisfies such other conditions as may be provided with
respect to the Securities of such series; provided that such instruments or
documents may place limitations and conditions on the right of such Senior
Indebtedness to exercise the rights of Designated Senior Indebtedness.

        "Disqualified Capital Stock" means, when used with respect to the
Securities of any series, (a) except as set forth in (b), with respect to any
Person, Capital Stock of such Person that, by its terms or by the terms of any
security into which it is convertible, exercisable or exchangeable, is, or upon
the happening of an event or the passage of time would be, required to be
redeemed or repurchased (including at the option of the holder thereof) by such
Person or any Subsidiary of such Person, in whole or in part, on or prior to the
Stated Maturity of the Securities of such series, and (b) with respect to any
Subsidiary of such Person (including with respect to any Subsidiary of the
Company), any Capital Stock other than any common stock with no preference,
privileges, or redemption or repayment provisions.

        "Dollar" or "$" means a dollar or other equivalent unit in such coin or
currency of the United States as at the time shall be legal tender for the
payment of public and private debts.

        "Event of Default" has the meaning specified in Section 501.

        "Exchange Rate" has the meaning specified in Section 501.

        "Holder", when used with respect to any Security, means the Person in
whose name the Security is registered in the Security Register.

        "Indebtedness" of any Person, unless otherwise provided with respect to
the Securities of a series as contemplated by Section 301, means, without
duplication, the following (whether currently outstanding or hereafter incurred
or created): (i) all liabilities and obligations, contingent or otherwise, of
any such Person (a) in respect of borrowed money (whether or not the recourse of
the lender is to the whole of the assets of such Person or only to a portion
thereof), (b) evidenced by bonds, notes, debentures or similar instruments, (c)
representing the balance deferred and unpaid of the purchase price of any
property or services, except such as would constitute trade payables to trade
creditors in the ordinary course of business that are not more than 90 days past
their original due date, (d) evidenced by bankers' acceptances or similar
instruments issued or accepted by banks, (e) for the payment of money relating
to a Capitalized Lease Obligation or (f) evidenced by a letter of credit or a
reimbursement obligation of such Person with respect to any letter of credit;
(ii) all net obligations of such Person under Interest Swap and Hedging
Obligations; (iii) all liabilities of others of the kind described in the
preceding clause (i) or (ii) that such Person has guaranteed or that is
otherwise its legal liability and all obligations to purchase, redeem or acquire
any Capital Stock; and (iv) any and all deferrals, renewals, extensions,
refinancings, refundings (whether direct or indirect) of, or amendments,
modifications or supplements to, any liability of the


                                        4

<PAGE>   13



kind described in any of the preceding clauses (i), (ii) or (iii), or this
clause (iv), whether or not between or among the same parties.

        "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof
and shall include the terms of particular series of Securities established as
contemplated by Section 301 and the provisions of the Trust Indenture Act that
are deemed to be a part of and govern this instrument.

        "interest", when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity.

        "Interest Payment Date", when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

        "Interest Swap and Hedging Obligation" means any obligation of any
Person pursuant to any interest rate swap agreement, interest rate cap
agreement, interest rate collar agreement, interest rate exchange agreement,
currency exchange agreement or any other agreement or arrangement designed to
protect against fluctuations in interest rates or currency values, including,
without limitation, any arrangement whereby, directly or indirectly, such Person
is entitled to receive from time to time periodic payments calculated by
applying either a fixed or floating rate of interest on a stated notional amount
in exchange for periodic payments made by such Person calculated by applying a
fixed or floating rate of interest on the same notional amount.

        "Judgment Currency" has the meaning specified in Section 506.

        "Junior security" of a Person means, when used with respect to the
Securities of any series, any Qualified Capital Stock of such Person or any
Indebtedness of such Person that is subordinated in right of payment to the
Securities of such series and has no scheduled installment of principal due, by
redemption, sinking fund payment or otherwise, on or prior to the Stated
Maturity of the Securities of such series.

        "Maturity", when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes due
and payable as therein or herein provided, whether at the Stated Maturity or by
declaration of acceleration, call for redemption or otherwise.

        "Officers' Certificate" means a certificate signed by the Chairman of
the Board, the President or a Vice President, and by the Treasurer, the
Controller, the Secretary or an Assistant Treasurer, Assistant Controller or
Assistant Secretary, of the Company, and delivered to the Trustee, which
certificate shall comply with Section 103 hereof.

        "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for or an employee of the Company, rendered, if applicable, in
accordance with Section 314(c) of the Trust Indenture Act, which opinion shall
comply with Section 103 hereof.


                                        5

<PAGE>   14



        "Original Issue Discount Security" means any Security which provides for
an amount less than the principal amount thereof to be due and payable upon a
declaration of acceleration of the Maturity thereof pursuant to Section 502.

        "Outstanding", when used with respect to Securities of a series, means,
as of the date of determination, all Securities of such series theretofore
authenticated and delivered under this Indenture, except:

        (i) Securities theretofore cancelled by the Trustee or delivered to the
    Trustee for cancellation;

        (ii) Securities for whose payment or redemption money in the necessary
    amount has been theretofore irrevocably deposited with the Trustee or any
    Paying Agent (other than the Company) in trust or set aside and segregated
    in trust by the Company (if the Company shall act as its own Paying Agent)
    for the Holders of such Securities; provided that, if such Securities are to
    be redeemed, notice of such redemption has been duly given pursuant to this
    Indenture or provision therefor satisfactory to the Trustee has been made;
    and

        (iii) Securities which have been paid pursuant to Section 306 or in
    exchange for or in lieu of which other Securities have been authenticated
    and delivered pursuant to this Indenture, other than any such Securities in
    respect of which there shall have been presented to the Trustee proof
    satisfactory to it that such Securities are held by a bona fide purchaser in
    whose hands such Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, or whether a
quorum is present at a meeting of Holders of Securities, (a) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding for such purposes shall be the principal amount thereof that would
be due and payable as of the date of such determination upon acceleration of the
Maturity thereof pursuant to Section 502, (b) the principal amount of a Security
denominated in a foreign currency shall be the U.S. dollar equivalent,
determined by the Company on the date of original issuance of such Security, of
the principal amount (or, in the case of an Original Issue Discount Security,
the U.S. dollar equivalent, determined on the date of original issuance of such
Security, of the amount determined as provided in (a) above), of such Security
and (c) Securities owned by the Company or any other obligor upon the Securities
or any Affiliate of the Company or of such other obligor shall be disregarded
and deemed not to be Outstanding, except that, in determining whether the
Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver or upon any such
determination as to the presence of a quorum, only Securities which the Trustee
knows to be so owned shall be so disregarded. Securities so owned which have
been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
other obligor upon the Securities or any Affiliate of the Company or of such
other obligor.



                                        6

<PAGE>   15



        "Paying Agent" means any Person, which may include the Company,
authorized by the Company to pay the principal of (and premium, if any) or
interest on or Additional Amounts with respect to any one or more series of
Securities on behalf of the Company.

        "Payment Default" has the meaning specified in Section 1302(a).

        "Payment Notice" has the meaning specified in Section 1302(b).

        "Person" means any individual, corporation, partnership, limited
liability company, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof or any other entity of any kind.

        "Place of Payment", when used with respect to the Securities of any
series, means the place or places where the principal of (and premium, if any)
and interest on and any Additional Amounts with respect to the Securities of
that series are payable as specified in accordance with Section 301 subject to
the provisions of Section 1002.

        "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 306 in exchange for or in lieu of a
mutilated, destroyed, lost or stolen Security shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

        "Qualified Capital Stock" means any Capital Stock of the Company that is
not Disqualified Capital Stock.

        "Redemption Date", when used with respect to any Security to be
redeemed, means the date fixed for such redemption by or pursuant to the terms
of such Security and this Indenture.

        "Redemption Price", when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to the terms of
such Security and this Indenture.

        "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 301, or, if not so specified, the last day of the
calendar month preceding such Interest Payment Date if such Interest Payment
Date is the fifteenth day of the calendar month or the fifteenth day of the
calendar month preceding such Interest Payment Date if such Interest Payment
Date is the first day of a calendar month, whether or not such day shall be a
Business Day.

        "Required Currency" has the meaning specified in Section 506.

        "Responsible Officer", when used with respect to the Trustee, means the
Chairman or any Vice Chairman of the Board of Directors, the Chairman or any
Vice Chairman of the Executive Committee of the Board of Directors, the Chairman
of the Trust Committee, the President, any Vice President, the Secretary, any
Assistant Secretary, the Treasurer, any Assistant Treasurer,


                                        7

<PAGE>   16



the Cashier, any Assistant Cashier, any Trust Officer or Assistant Trust
Officer, the Controller or any Assistant Controller or any other officer of the
Trustee customarily performing functions similar to those performed by any of
the above designated officers and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred
because of his knowledge of and familiarity with the particular subject.

        "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and delivered
under this Indenture.

        "Security Custodian" means, with respect to Securities of a series
issued in global form, the Trustee for Securities of such series, acting in its
capacity as custodian with respect to the Securities of such series, or any
successor entity thereto.

        "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

        "Senior Indebtedness" of the Company, unless otherwise provided with
respect to the Securities of a series as contemplated by Section 301, means (i)
all Indebtedness of the Company, whether currently outstanding or hereafter
issued, unless, by the terms of the instrument creating or evidencing such
Indebtedness, it is provided that such Indebtedness is not superior in right of
payment to the Securities or to other Indebtedness which is pari passu with or
subordinated to the Securities, and (ii) any modifications, refunding,
deferrals, renewals or extensions of any such Indebtedness or securities, notes
or other evidences of Indebtedness issued in exchange for such Indebtedness;
provided that in no event shall "Senior Indebtedness" include (a) Indebtedness
of the Company owed or owing to any Subsidiary of the Company or any officer,
director or employee of the Company or any Subsidiary of the Company, (b)
Indebtedness to trade creditors or (c) any liability for taxes owed or owing by
the Company.

        "Special Record Date" for the payment of any Defaulted Interest on the
Securities of any series means a date fixed by the Trustee pursuant to Section
307.

        "Stated Maturity", when used with respect to any Security or any
installment of principal thereof or interest thereon, means the date specified
in such Security as the fixed date on which the principal of such Security or
such installment of principal or interest is due and payable.

        "Subsidiary" means a corporation more than 50% of the outstanding voting
stock of which is owned, directly or indirectly, by the Company or by one or
more other Subsidiaries, or by the Company and one or more other Subsidiaries.
For the purposes of this definition, "voting stock" means stock which ordinarily
has voting power for the election of directors, whether at all times or only so
long as no senior class of stock has such voting power by reason of any
contingency.

        "Trustee" means the Person named as the "Trustee" in the first paragraph
of this instrument until a successor Trustee shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Trustee" shall mean
or include each Person who is then a Trustee


                                        8

<PAGE>   17



hereunder, and if at any time there is more than one such Person, "Trustee" as
used with respect to the Securities of any series shall mean the Trustee with
respect to Securities of that series.

        "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force
at the date as of which this instrument was executed, except as provided in
Section 905.

        "United States" means the United States of America (including the States
and the District of Columbia) and its "possessions", which include Puerto Rico,
the U.S. Virgin Islands, Guam, American Samoa, Wake Island and the Northern
Mariana Islands.

        "United States Alien" means any Person who, for United States federal
income tax purposes, is a foreign corporation, a non-resident alien individual,
a non-resident alien or foreign fiduciary of an estate or trust, or a foreign
partnership.

        "U.S. Government Obligations" has the meaning specified in Section 401.

        "Vice President", when used with respect to the Company or the Trustee,
means any vice president, whether or not designated by a number or a word or
words added before or after the title "vice president".

        "Wholly Owned Subsidiary" means a corporation all the outstanding voting
stock (other than any directors' qualifying shares) of which is owned, directly
or indirectly, by the Company or by one or more other Wholly Owned Subsidiaries,
or by the Company and one or more other Wholly Owned Subsidiaries. For the
purposes of this definition, "voting stock" means stock which ordinarily has
voting power for the election of directors, whether at all times or only so long
as no senior class of stock has such voting power by reason of any contingency.

        "Yield to Maturity", when used with respect to any Original Issue
Discount Security, means the yield to maturity, if any, set forth on the face
thereof.

SECTION 102.  Incorporation by Reference of Trust Indenture Act.

        Whenever this Indenture refers to a provision of the Trust Indenture
Act, the provision is incorporated by reference in and made a part of this
Indenture. The following Trust Indenture Act terms used in this Indenture have
the following meanings:

        "Bankruptcy Act" means the Bankruptcy Act or Title 11 of the United
States Code.

        "indenture securities" means the Securities.

        "indenture security holder" means a Holder.

        "indenture to be qualified" means this Indenture.

        "indenture trustee" or "institutional trustee" means the Trustee.


                                        9

<PAGE>   18



        "obligor" on the indenture securities means the Company or any other
obligor on the Securities.

        All terms used in this Indenture that are defined by the Trust Indenture
Act, defined by Trust Indenture Act reference to another statute or defined by
Commission rule under the Trust Indenture Act and not otherwise defined herein
have the meanings assigned to them therein.

SECTION 103.  Compliance Certificates and Opinions.

        Except as otherwise expressly provided by this Indenture, upon any
application or request by the Company to the Trustee to take any action under
any provision of this Indenture, the Company shall furnish to the Trustee an
Officers' Certificate stating that all conditions precedent, if any (including
any covenants the compliance with which constitutes a condition precedent,
provided for in this Indenture relating to the proposed action have been
complied with and an Opinion of Counsel stating that in the opinion of such
counsel all such conditions precedent, if any (including any covenants the
compliance with which constitutes a condition precedent) have been complied
with, except that in the case of any such application or request as to which the
furnishing of such documents is specifically required by any provision of this
Indenture relating to such particular application or request, no additional
certificate or opinion need be furnished.

        Every certificate or opinion with respect to compliance with a condition
or covenant provided for in this Indenture shall include

        (1) a statement that each Person signing such certificate or opinion has
    read such covenant or condition and the definitions herein relating thereto;

        (2) a brief statement as to the nature and scope of the examination or
    investigation upon which the statements or opinions contained in such
    certificate or opinion are based;

        (3) a statement that, in the opinion of each such Person, such Person
    has made such examination or investigation as is necessary to enable such
    Person to express an informed opinion as to whether or not such covenant or
    condition has been complied with; and

        (4) a statement as to whether, in the opinion of each such Person, such
    condition or covenant has been complied with.

SECTION 104.  Form of Documents Delivered to Trustee.

        In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one


                                       10

<PAGE>   19



or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

        Any certificate or opinion of an officer of the Company may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in the possession of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know, that the certificate or opinion or representations with respect to such
matters are erroneous.

        Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

SECTION 105.  Acts of Holders; Record Dates.

        (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. Except as herein otherwise expressly provided, such action
shall become effective when such instrument or instruments or record thereof or
both are delivered to the Trustee and, where it is hereby expressly required, to
the Company. Such instrument or instruments and any such record (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as the
"Act" of the Holders signing such instrument or instruments and so voting at any
such meeting. Proof of execution of any such instrument or of a writing
appointing any such agent, or the holding of any Person of a Security, shall be
sufficient for any purpose of this Indenture and (subject to Section 601)
conclusive in favor of the Trustee and the Company, if made in the manner
provided in this Section. The record of any meeting of Holders of Securities
shall be proved in the manner provided in Section 1406.

        The Company may set in advance a record date for purposes of determining
the identity of Holders of Securities entitled to vote or consent to any action
by vote or consent authorized or permitted under this Indenture. If a record
date is fixed, those Persons who were Holders of Outstanding Securities at such
record date (or their duly designated proxies), and only those Persons, shall be
entitled with respect to such Securities to take such action by vote or consent
or to revoke any vote or consent previously given, whether or not such Persons
continue to be Holders after such record date. Promptly after any record date is
set pursuant to this paragraph, the Company, at its own expense, shall cause
notice thereof to be given to the Trustee in writing in the manner provided in
Section 106 and to the relevant Holders as set forth in Section 107.

        (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary


                                       11

<PAGE>   20



public or other officer authorized by law to take acknowledgments of deeds,
certifying that the individual signing such instrument or writing acknowledged
to him the execution thereof. Where such execution is by a signer acting in a
capacity other than his individual capacity, such certificate or affidavit shall
also constitute sufficient proof of his authority. The fact and date of the
execution of any such instrument or writing, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee
deems sufficient.

        (c) The principal amount and serial numbers of Securities held by any
Person, and the date of holding the same, shall be proved by the Security
Register.

        (d) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future Holder
of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee or the
Company in reliance thereon, whether or not notation of such action is made upon
such Security. Any Holder or subsequent Holder may revoke the request, demand,
authorization, direction, notice, consent or other Act as to his Security or
portion of his Security; provided, however, that such revocation shall be
effective only if the Trustee receives the notice of revocation before the date
the Act becomes effective.

SECTION 106.  Notices, Etc., to Trustee and Company.

        Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Indenture to
be made upon, given or furnished to, or filed with,

        (1) the Trustee by any Holder or by the Company shall be sufficient for
    every purpose hereunder if made, given, furnished or filed in writing to or
    with the Trustee at its Corporate Trust Office, Attention: Corporate Trust
    Administration, or

        (2) the Company by the Trustee or by any Holder shall be sufficient for
    every purpose hereunder (unless otherwise herein expressly provided) if in
    writing and mailed, first-class postage prepaid, to the Company addressed to
    it at the address of its principal office specified in the first paragraph
    of this Indenture or at any other address previously furnished in writing to
    the Trustee by the Company, Attention: Corporate Secretary.

SECTION 107.  Notice to Holders; Waiver.

        Where this Indenture provides for notice to Holders of Securities of any
event, such notice shall be sufficiently given (unless otherwise herein
expressly provided) if in writing and mailed, first-class postage prepaid, to
each Holder affected by such event, at the address of such Holder as it appears
in the Security Register, not later than the latest date, and not earlier than
the earliest date, prescribed for the giving of such notice.



                                       12

<PAGE>   21



        In case by reason of the suspension of regular mail service, or by
reason of any other cause it shall be impracticable to give such notice to
Holders of Securities by mail, then such notification as shall be made with the
approval of the Trustee shall constitute a sufficient notification for every
purpose hereunder. In any case in which notice to Holders of Securities is given
by mail, neither the failure to mail such notice, nor any defect in any notice
so mailed, to any particular Holder of a Security, shall affect the sufficiency
of such notice with respect to other Holders of Securities.

        Where this Indenture provides for notice in any manner, such notice may
be waived in writing by the Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Holders shall be filed with the Trustee, but such
filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver.

SECTION 108.  Conflict With Trust Indenture Act.

        If any provision hereof limits, qualifies or conflicts with any
provision of the Trust Indenture Act or another provision hereof which is
required to be included in this Indenture by any of the provisions of the Trust
Indenture Act, such provision of the Trust Indenture Act shall control. If any
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act which may be so modified or excluded, the former provision shall
be deemed to apply to this Indenture as so modified or to be excluded.

SECTION 109.  Effect of Headings and Table of Contents.

        The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

SECTION 110.   Successors and Assigns.

        All covenants and agreements in this Indenture by the Company shall bind
its successors and assigns, whether so expressed or not.

SECTION 111.  Separability Clause.

        In case any provision in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

SECTION 112.  Benefits of Indenture.

        Nothing in this Indenture or in the Securities, express or implied,
shall give to any Person, other than the parties hereto and their successors
hereunder, any Authenticating Agent, Paying Agent and Security Registrar, and
the Holders and holders of any Senior Indebtedness, any benefit or any legal or
equitable right, remedy or claim under this Indenture.


                                       13

<PAGE>   22



SECTION 113.  Governing Law.

        This Indenture and the Securities shall be governed by and construed in
accordance with the laws of the State of New York, but without giving effect to
applicable principles of conflicts of law to the extent the application of the
laws of another jurisdiction would be required thereby.

SECTION 114.  Legal Holidays.

        In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any other provision of this Indenture or of the
Securities) payment of principal and interest (and premium and Additional
Amounts, if any) need not be made at such Place of Payment on such date, but may
be made on the next succeeding Business Day at such Place of Payment with the
same force and effect as if made on the Interest Payment Date or Redemption
Date, or at the Stated Maturity, provided that no interest shall accrue with
respect to such payment for the period from and after such Interest Payment
Date, Redemption Date or Stated Maturity, as the case may be.

SECTION 115.  Corporate Obligation.

        No recourse may be taken, directly or indirectly, against any
incorporator, subscriber to the capital stock, stockholder, officer, director or
employee of the Company or the Trustee or of any predecessor or successor of the
Company or the Trustee with respect to the Company's obligations on the
Securities or the obligations of the Company or the Trustee under this Indenture
or any certificate or other writing delivered in connection herewith.


                                   ARTICLE TWO

                                 SECURITY FORMS

SECTION 201.  Forms Generally.

        The Securities of each series shall be in fully registered form and in
substantially such form or forms (including temporary or permanent global form)
as shall be established by or pursuant to a Board Resolution or in one or more
indentures supplemental hereto, in each case with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
this Indenture and may have such letters, numbers or other marks of
identification and such legends or endorsements placed thereon as may be
required to comply with the rules of any securities exchange or as may,
consistently herewith, be determined by the officers executing such Securities,
as evidenced by their execution of the Securities. If temporary Securities of
any series are issued in global form as permitted by Section 304, the form
thereof shall be established as provided in the preceding sentence. A copy of
the Board Resolution establishing the form or forms of Securities of any series
(or any such temporary global Security) shall be certified by the Secretary or
an Assistant Secretary of the Company and delivered to the Trustee at or prior
to the delivery of the Company


                                       14

<PAGE>   23



Order contemplated by Section 303 for the authentication and delivery of such
Securities (or any such temporary global Security).

        The definitive Securities shall be printed, lithographed or engraved on
steel engraved borders or may be produced in any other manner, all as determined
by the officers executing such Securities, as evidenced by their execution
thereof.

SECTION 202.  Form of Trustee's Certificate of Authentication.

        The Trustee's certificate of authentication shall be in substantially
the following form:

        "This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.


                                            [                             ],
                                             -----------------------------
                                                 as Trustee

                                            By
                                              ----------------------------
                                                   Authorized Signatory".

SECTION 203.  Securities in Global Form.

        If Securities of a series are issuable in global form, as contemplated
by Section 301, then, notwithstanding clause (10) of Section 301 and the
provisions of Section 302, any such Security shall represent such of the
Outstanding Securities of such series as shall be specified therein and may
provide that it shall represent the aggregate amount of Outstanding Securities
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities represented thereby may from time to time be reduced to reflect
exchanges. Any endorsement of a Security in global form to reflect the amount,
or any increase or decrease in the amount, of Outstanding Securities represented
thereby shall be made by the Trustee in such manner and upon instructions given
by such Person or Persons as shall be specified in such Security or in a Company
Order to be delivered to the Trustee pursuant to Section 303 or Section 304.
Subject to the provisions of Section 303 and, if applicable, Section 304, the
Trustee shall deliver and redeliver any Security in permanent global form in the
manner and upon instructions given by the Person or Persons specified in such
Security or in the applicable Company Order. With respect to the Securities of
any series that are represented by a Security in global form, the Company
authorizes the execution and delivery by the Trustee of a letter of
representations or other similar agreement or instrument in the form customarily
provided for by the Depositary appointed with respect to such global Security.
Any Security in global form may be deposited with the Depositary or its nominee,
or may remain in the custody of the Security Custodian therefor pursuant to a
FAST Balance Certificate Agreement or similar agreement between the Trustee and
the Depositary. If a Company Order pursuant to Section 303 or 304 has been, or
simultaneously is, delivered, any instructions by the Company with respect to
endorsement or delivery or redelivery of a Security in global form shall be in
writing but need not comply with Section 103 and need not be accompanied by an
Opinion of Counsel.



                                       15

<PAGE>   24



        Members of, or participants in, the Depositary ("Agent Members") shall
have no rights under this Indenture with respect to any Security issued in
global form held on their behalf by the Depositary, or the Security Custodian as
its custodian, or under such global Security, and the Depositary may be treated
by the Company, the Security Custodian and any agent of the Company or the
Trustee as the absolute owner of such global Security for all purposes
whatsoever. Notwithstanding the foregoing, (i) the registered holder of a
Security of any series issued in global form may grant proxies and otherwise
authorize any Person, including Agent Members and Persons that may hold
interests through Agent Members, to take any action that a Holder of such series
is entitled to take under this Indenture or the Securities of such series and
(ii) nothing herein shall prevent the Company, the Security Custodian or any
agent of the Company or the Security Custodian, from giving effect to any
written certification, proxy or other authorization furnished by the Depositary
or shall impair, as between the Depositary and its Agent Members, the operation
of customary practices governing the exercise of the rights of a beneficial
owner of any Security.

        Notwithstanding Section 305, except as otherwise specified as
contemplated by Section 301, any permanent global Security shall be exchangeable
only as provided in this paragraph. If the beneficial owners of interests in a
permanent global Security are entitled to exchange such interest for Securities
of such series and of like tenor and principal amount of another authorized form
and denomination, as specified as contemplated by Section 301, then without
unnecessary delay but in any event not later than the earliest date on which
such interests may be so exchanged, the Company shall deliver to the Trustee
definitive Securities of that series in an aggregate principal amount equal to
the principal amount of such permanent global Security, executed by the Company.
On or after the earliest date on which such interests may be so exchanged, such
permanent global Security shall be surrendered from time to time in accordance
with instructions given to the Trustee and the Depositary (which instructions
shall be in writing but need not comply with Section 103 or be accompanied by an
Opinion of Counsel) by the Depositary or such other depositary as shall be
specified in the Company Order with respect thereto to the Trustee, as the
Company's agent for such purpose, to be exchanged, in whole or in part, for
definitive Securities of the same series without charge and the Trustee shall
authenticate and deliver, in exchange for each portion of such permanent global
Security, a like aggregate principal amount of other definitive Securities of
the same series of authorized denominations and of like tenor as the portion of
such permanent global Security to be exchanged; provided, however, that no such
exchanges may occur during a period beginning at the opening of business 15 days
before any selection of Securities of that series is to be redeemed and ending
on the relevant Redemption Date. Promptly following any such exchange in part,
such permanent global Security marked to evidence the partial exchange shall be
returned by the Trustee to the Depositary or such other depositary referred to
above in accordance with the instructions of the Company referred to above. If a
definitive Security is issued in exchange for any portion of a permanent global
Security after the close of business at the office or agency where such exchange
occurs on (i) any Regular Record Date and before the opening of business at such
office or agency on the relevant Interest Payment Date, or (ii) any Special
Record Date and before the opening of business at such office or agency on the
related proposed date for payment of Defaulted Interest, interest or Defaulted
Interest, as the case may be, will not be payable on such Interest Payment Date
or proposed date for payment, as the case may be, in respect of such Security,
but will be payable on such Interest Payment Date or proposed


                                       16

<PAGE>   25



for payment, as the case may be, only to the Person to whom interest in respect
of such portion of such permanent global Security is payable in accordance with
the provisions of this Indenture.

        Notwithstanding Section 305, except as otherwise specified as
contemplated by Section 301, transfers of a Security issued in global form shall
be limited to transfers of such global Security in whole, but not in part, to
the Depositary, its successors or their respective nominees. Interests of
beneficial owners in a Security issued in global form may be transferred in
accordance with the rules and procedures of the Depositary. Securities of any
series shall be transferred to all beneficial owners of a global Security of
such series in exchange for their beneficial interests in that global Security
if, and only if, either (1) the Depositary notifies the Company that it is
unwilling or unable to continue as Depositary for the global Security of such
series and a successor Depositary is not appointed by the Company within 90 days
of such notice, (2) an Event of Default has occurred with respect to such series
and is continuing and the Security Registrar has received a request from the
Depositary or the Trustee to issue Securities of such series in lieu of all or a
portion of that global Security (in which case the Company shall deliver
Securities of such series within 30 days of such request) or (3) the Company
determines not to have the Securities of such series represented by a global
Security.

        In connection with any transfer of a portion of the beneficial interest
in a global Security of any series to beneficial owners pursuant to this Section
203, the Security Registrar shall reflect on its books and records the date and
a decrease in the principal amount of the global Security of that series in an
amount equal to the principal amount of the beneficial interest in the global
Security of that series to be transferred, and the Company shall execute, and
the Trustee upon receipt of a Company Order for the authentication and delivery
of Securities of that series shall authenticate and deliver, one or more
Securities of the same series of like tenor and amount.

        In connection with the transfer of all the beneficial interests in a
global Security of any series to beneficial owners pursuant to this Section 203,
the global Security shall be deemed to be surrendered to the Trustee for
cancellation, and the Company shall execute, and the Trustee shall authenticate
and deliver, to each beneficial owner identified by the Depositary in exchange
for its beneficial interest in the global Security, an equal aggregate principal
amount of Securities of that series of authorized denominations.

        Neither the Company nor the Trustee will have any responsibility or
liability for any aspect of the records relating to, or payments made on account
of, Securities of any series by the Depositary, or for maintaining, supervising
or reviewing any records of the Depositary relating to such Securities. Neither
the Company nor the Trustee shall be liable for any delay by the related global
Security Holder or the Depositary in identifying the beneficial owners, and each
such Person may conclusively rely on, and shall be protected in relying on,
instructions from such global Security Holder or the Depositary for all purposes
(including with respect to the registration and delivery, and the respective
principal amounts, of the Securities to be issued).

        The provisions of the last sentence of Section 303 shall apply to any
Security in global form if such Security was never issued and sold by the
Company and the Company delivers to the Trustee the Security in global form
together with written instructions (which need not comply


                                       17

<PAGE>   26



with Section 103 and need not be accompanied by an Opinion of Counsel) with
regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

        Notwithstanding the provisions of Sections 201 and 307, unless otherwise
specified as contemplated by Section 301, payment of principal of (and premium,
if any) and interest on and any Additional Amounts with respect to any Security
in permanent global form shall be made to the Person or Persons specified
therein.

        Notwithstanding the provisions of Section 308 and except as provided in
the preceding paragraph, the Company, the Trustee and any agent of the Company
or of the Trustee shall treat a Person as the Holder of such principal amount of
Outstanding Securities represented by a global Security as shall be specified in
a written statement, if any, of the Holder of such global Security, which is
produced to the Security Registrar by such Holder.

        Global Securities may be issued in either temporary or permanent form.
Permanent global Securities will be issued in definitive form.


                                  ARTICLE THREE

                                 THE SECURITIES

SECTION 301.  Amount Unlimited; Issuable in Series.

        The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is unlimited.

        The Securities may be issued in one or more series. There shall be
established in or pursuant to a Board Resolution, and set forth in an Officers'
Certificate, or established in one or more indentures supplemental hereto, prior
to the issuance of Securities of any series,

        (1) the title of the Securities of the series (which shall distinguish
    the Securities of the series from all other Securities);

        (2) any limit upon the aggregate principal amount of the Securities of
    the series which may be authenticated and delivered under this Indenture
    (except for Securities authenticated and delivered upon registration of
    transfer of, or in exchange for, or in lieu of, other Securities of the
    series pursuant to Section 304, 305, 306, 906 or 1107);

        (3) whether any Securities of the series are to be issuable initially in
    temporary global form and whether any Securities of the series are to be
    issuable in permanent global form, and, if so, whether beneficial owners of
    interests in any such global Security may exchange such interests for
    Securities of such series and of like tenor of any authorized form and
    denomination and the circumstances under which any such exchanges may occur,
    if


                                       18

<PAGE>   27



    other than in the manner provided in Section 203, and the Depositary for
    any global Security or Securities of such series;

        (4) the manner in which any interest payable on a temporary global
    Security on any Interest Payment Date will be paid if other than in the
    manner provided in Section 304;

        (5) the date or dates on which the principal of (and premium, if any,
    on) the Securities of the series is payable or the method of determination
    thereof,

        (6) the rate or rates, or the method of determination thereof, at which
    the Securities of the series shall bear interest, if any, whether and under
    what circumstances Additional Amounts with respect to such Securities shall
    be payable, the date or dates from which such interest shall accrue, the
    Interest Payment Dates on which such interest shall be payable and, if other
    than as set forth in Section 101, the Regular Record Date for the interest
    payable on any Securities on any Interest Payment Date;

        (7) the place or places where, subject to the provisions of Section
    1002, the principal of (and premium, if any), any interest on and any
    Additional Amounts with respect to the Securities of the series shall be
    payable;

        (8) the period or periods within which, the price or prices (whether
    denominated in cash, securities or otherwise) at which and the terms and
    conditions upon which Securities of the series may be redeemed, in whole or
    in part, at the option of the Company, if the Company is to have that
    option, and the manner in which the Company must exercise any such option,
    if different from those set forth herein;

        (9) the obligation, if any, of the Company to redeem or purchase
    Securities of the series pursuant to any sinking fund or analogous
    provisions or at the option of a Holder thereof and the period or periods
    within which, the price or prices (whether denominated in cash, securities
    or otherwise) at which and the terms and conditions upon which Securities of
    the series shall be redeemed or purchased in whole or in part pursuant to
    such obligation;

        (10) the denomination in which any Securities of that series shall be
    issuable, if other than denominations of $1,000 and any integral multiple
    thereof;

        (11) the currency or currencies (including composite currencies) if
    other than Dollars, or the form, including equity securities, other debt
    securities (including Securities), warrants or any other securities or
    property of the Company or any other Person, in which payment of the
    principal of (and premium, if any), any interest on and any Additional
    Amounts with respect to the Securities of the series shall be payable;

        (12) if the principal of (and premium, if any) or interest on or any
    Additional Amounts with respect to the Securities of the series are to be
    payable, at the election of the Company or a Holder thereof, in a currency
    or currencies (including composite currencies) other than that in which the
    Securities are stated to be payable, the currency or currencies


                                       19

<PAGE>   28



    (including composite currencies) in which payment of the principal of
    (and premium, if any) and interest on, and any Additional Amounts with
    respect to, Securities of such series as to which such election is made
    shall be payable, and the periods within which and the terms and conditions
    upon which such election is to be made;

        (13) if the amount of payments of principal of (and premium, if any),
    any interest on and any Additional Amounts with respect to the Securities of
    the series may be determined with reference to any commodities, currencies
    or indices, values, rates or prices or any other index or formula, the
    manner in which such amounts shall be determined;

        (14) if other than the entire principal amount thereof, the portion of
    the principal amount of Securities of the series which shall be payable upon
    declaration of acceleration of the Maturity thereof pursuant to Section 502;

        (15) any additional means of satisfaction and discharge of this
    Indenture with respect to Securities of the series pursuant to Section 401,
    any additional conditions to discharge pursuant to Section 401 or 403 and
    the application, if any, of Section 403;

        (16) any deletions or modifications of or additions to the definitions
    set forth in Section 101, the Events of Default set forth in Section 501 or
    covenants of the Company set forth in Article Ten pertaining to the
    Securities of the series;

        (17) if the Securities of the series are to be convertible into or
    exchangeable for equity securities, other debt securities (including
    Securities), warrants or any other securities or property of the Company or
    any other Person, at the option of the Company or the Holder or upon the
    occurrence of any condition or event, the terms and conditions for such
    conversion or exchange; and

        (18) any other terms of the series (which terms shall not be
    inconsistent with the provisions of this Indenture).

        All Securities of any one series shall be substantially identical except
as to denomination and except as may otherwise be provided in or pursuant to the
Board Resolution referred to above and (subject to Section 303) set forth, or
determined in the manner provided, in the Officers' Certificate referred to
above or in any such indenture supplemental hereto.

        At the option of the Company, interest on the Securities of any series
that bears interest may be paid by mailing a check to the address of any Holder
as such address shall appear in the Security Register.

        If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of an appropriate record of such action
together with such Board Resolution shall be certified by the Secretary or an
Assistant Secretary of the Company and delivered to the Trustee at or prior to
the delivery of the Officers' Certificate setting forth the terms of the series.



                                       20

<PAGE>   29



        The Securities shall be subordinated in right of payment to Senior
Indebtedness as provided in Article Thirteen.

SECTION 302.  Denominations.

        The Securities of each series shall be issuable in such denominations as
shall be specified as contemplated by Section 301. In the absence of any such
provisions with respect to the Securities of any series, the Securities of such
series denominated in Dollars shall be issuable in denominations of $1,000 and
any integral multiple thereof. Unless otherwise provided as contemplated by
Section 301 with respect to any series of Securities, any Securities of a series
denominated in a currency other than Dollars shall be issuable in denominations
that are the equivalent, as determined by the Company by reference to the noon
buying rate in The City of New York for cable transfers for such currency, as
such rate is reported or otherwise made available by the Federal Reserve Bank of
New York, on the applicable issue date for such Securities, of $1,000 and any
integral multiple thereof.

SECTION 303.  Execution, Authentication Delivery and Dating.

        The Securities shall be executed on behalf of the Company by its
Chairman of the Board, its President, its Treasurer or one of its Vice
Presidents, under its corporate seal reproduced thereon or affixed thereto
attested by its Secretary or one of its Assistant Secretaries. The signature of
any of these officers on the Securities may be manual or facsimile.

        Securities bearing the manual or facsimile signatures of individuals who
were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Securities or did not
hold such offices at the date of such Securities.

        At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with the Company Order shall authenticate and deliver such Securities as in this
Indenture provided and not otherwise.

        If the form or terms of the Securities of the series have been
established in or pursuant to one or more Board Resolutions or any other method
permitted by Sections 201 and 301, in authenticating such Securities, and
accepting the additional responsibilities under this Indenture in relation to
such Securities, the Trustee shall be entitled to receive, and (subject to
Section 601) shall be fully protected in relying upon, an Opinion of Counsel
stating,

        (a) if the form of such Securities has been established by or pursuant
    to Board Resolution as permitted by Section 201, that such form has been
    established in conformity with the provisions of this Indenture;



                                       21

<PAGE>   30



        (b) if the terms of such Securities have been established by or pursuant
    to Board Resolution as permitted by Section 301, that such terms have been
    established in conformity with the provisions of this Indenture; and

        (c) that such Securities, when authenticated and delivered by the
    Trustee and issued by the Company in the manner and subject to any
    conditions specified in such Opinion of Counsel, will constitute legal,
    valid and binding obligations of the Company, enforceable in accordance with
    their terms, except as such enforcement is subject to the effect of (i)
    bankruptcy, insolvency, fraudulent conveyance, reorganization or other laws
    relating to or affecting creditors' rights and (ii) general principles of
    equity (regardless of whether such enforcement is considered in a proceeding
    in equity or at law).

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

        Each Security shall be dated the date of its authentication.

        No Security shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose unless there appears on such Security, a
certificate of authentication substantially in the form provided for herein
executed by the Trustee by manual signature, and such certificate upon any
Security shall be conclusive evidence, and the only evidence, that such Security
has been duly authenticated and delivered hereunder. Notwithstanding the
foregoing, if any Security shall have been authenticated and delivered hereunder
but never issued and sold by the Company, and the Company shall deliver such
Security to the Trustee for cancellation as provided in Section 309 together
with a written statement (which need not comply with Section 103 and need not be
accompanied by an Opinion of Counsel) stating that such Security has never been
issued and sold by the Company, for all purposes of this Indenture such Security
shall be deemed never to have been authenticated and delivered hereunder and
shall never be entitled to the benefits of this Indenture.

SECTION 304.  Temporary Securities.

        Pending the preparation of definitive Securities of any series, the
Company may execute, and upon Company Order the Trustee shall authenticate and
deliver, temporary Securities which are printed, lithographed, typewritten,
mimeographed or otherwise produced, in any authorized denomination,
substantially of the tenor of the definitive Securities in lieu of which they
are issued, in registered form and with such appropriate insertions, omissions,
substitutions and other variations as the officers of the Company executing such
Securities may determine, as evidenced by their execution of such Securities.

        Except in the case of temporary Securities in global form (which shall
be exchanged in accordance with the provisions of the following paragraphs), if
temporary Securities of any series are issued, the Company will cause definitive
Securities of that series to be prepared without unreasonable delay. After the
preparation of definitive Securities of such series, the temporary


                                       22

<PAGE>   31



Securities of such series shall be exchangeable for definitive Securities of
such series upon surrender of the temporary Securities of such series at the
office or agency of the Company in a Place of Payment for that series, without
charge to the Holder. Upon surrender for cancellation of any one or more
temporary Securities of any series, the Company shall execute and the Trustee
shall authenticate and deliver in exchange therefor a like principal amount of
definitive Securities of the same series of authorized denominations. Until so
exchanged the temporary Securities of any series shall in all respects be
entitled to the same benefits under this Indenture as definitive Securities of
such series.

        All Outstanding temporary Securities of any series shall in all respects
be entitled to the same benefits under this Indenture as definitive Securities
of the same series and of like tenor authenticated and delivered hereunder.

SECTION 305.  Registration, Registration of Transfer and Exchange.

        The Company shall cause to be kept for each series of Securities at one
of the offices or agencies maintained pursuant to Section 1002 a register (the
register maintained in such office and in any other office or agency of the
Company in a Place of Payment being herein sometimes collectively referred to as
the "Security Register") in which, subject to such reasonable regulations as it
may prescribe, the Company shall provide for the registration of Securities and
of transfers of Securities of such series. The Trustee is hereby initially
appointed "Security Registrar" for the purpose of registering Securities and
transfers of Securities as herein provided.

        Except as set forth in Section 203 or as may be provided pursuant to
Section 301, upon surrender for registration of transfer of any Security of any
series at the office or agency in a Place of Payment for that series, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee or transferees, one or more new Securities of
the same series and of like tenor, of any authorized denominations and of a like
aggregate principal amount.

        At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series and of like tenor, of any authorized
denominations and of a like aggregate principal amount, upon surrender of the
Securities to be exchanged at such office or agency. Whenever any Securities are
so surrendered for exchange, the Company shall execute, and the Trustee shall
authenticate and deliver, the Securities which the Holder making the exchange is
entitled to receive.

        All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture, as the Securities
surrendered upon such registration of transfer or exchange.

        Every Security presented or surrendered for registration of transfer or
for exchange shall (if so required by the Company or the Trustee) be duly
endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company and the Security Registrar duly executed, by the
Holder thereof or his attorney duly authorized in writing.


                                       23

<PAGE>   32



        No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
with any registration of transfer or exchange of Securities, other than exchange
pursuant to Section 304, 906 or 1107 not involving any transfer.

        The Company shall not be required (i) to issue, register the transfer of
or exchange Securities of any series during a period beginning at the opening of
business 15 days before the day of the mailing of a notice of redemption of
Securities of such series selected for redemption and ending at the close of
business on the day of the mailing of the relevant notice of redemption or (ii)
to register the transfer of or exchange any Security so selected for redemption
in whole or in part, except the unredeemed portion of any Security being
redeemed in part.

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.

        If any mutilated Security is surrendered to the Trustee, the Company
shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of the same series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

        If there shall be delivered to the Company and the Trustee (i) evidence
to their satisfaction of the destruction, loss or theft of any Security and (ii)
such security or indemnity as may be required by them to save each of them and
any agent of either of them harmless, then, in the absence of notice to the
Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and upon its request the Trustee shall
authenticate and deliver, in lieu of any such destroyed, lost or stolen
Security, a new Security of the same series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

        In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

        Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fee and expenses of the Trustee) connected therewith.

        Every new Security of any series issued pursuant to this Section in lieu
of any destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the destroyed,
lost or stolen Security shall be at any time enforceable by anyone, and shall be
entitled to all the benefits of this Indenture equally and proportionately with
any and all other Securities of that series duly issued hereunder.

        The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities.


                                       24

<PAGE>   33



SECTION 307.  Payment of Interest; Interest Rights Preserved.

        Interest on any Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in
whose name that Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest. Unless
otherwise provided with respect to the Securities of any series, payment of
interest may be made at the option of the Company by check mailed or delivered
to the address of any Person entitled thereto as such address shall appear in
the Security Register.

        Any interest on any Security of any series which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
on the relevant Regular Record Date by virtue of having been such Holder, and
such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in clause (1) or (2) below:

        (1) The Company may elect to make payment of any Defaulted Interest to
    the Persons in whose names the Securities of such series (or their
    respective Predecessor Securities) are registered at the close of business
    on a Special Record Date for the payment of such Defaulted Interest, which
    shall be fixed in the following manner. The Company shall notify the Trustee
    in writing of the amount of Defaulted Interest proposed to be paid on each
    Security of such series and the date of the proposed payment, and at the
    same time the Company shall deposit with the Trustee an amount of money
    equal to the aggregate amount proposed to be paid in respect of such
    Defaulted Interest or shall make arrangements satisfactory to the Trustee
    for such deposit prior to the date of the proposed payment, such money when
    deposited to be held in trust for the benefit of the Persons entitled to
    such Defaulted Interest as in this Clause provided. Thereupon the Trustee
    shall fix a Special Record Date for the payment of such Defaulted Interest
    which shall be not more than 15 days and not less than 10 days prior to the
    date of the proposed payment and not less than 10 days after the receipt by
    the Trustee of the notice of the proposed payment. The Trustee shall
    promptly notify the Company of such Special Record Date and, in the name and
    at the expense of the Company, shall cause notice of the proposed payment of
    such Defaulted Interest and the Special Record Date therefor to be mailed,
    first-class postage prepaid, to each Holder of Securities of such series at
    his address as it appears in the Security Register, not less than 10 days
    prior to such Special Record Date. The Trustee may, in its discretion, in
    the name and at the expense of the Company, cause a similar notice to be
    published at least once in an Authorized Newspaper, but such publication
    shall not be a condition precedent to the establishment of such Special
    Record Date. Notice of the proposed payment of such Defaulted Interest and
    the Special Record Date therefor having been so mailed, such Defaulted
    Interest shall be paid to the Persons in whose names the Securities of such
    series (or their respective Predecessor Securities) are registered at the
    close of business on such Special Record Date and shall no longer be payable
    pursuant to the following clause (2).

        (2) The Company may make payment of any Defaulted Interest on the
    Securities of any series in any other lawful manner not inconsistent with
    the requirements of any securities exchange on which such Securities may be
    listed, and upon such notice as may be


                                       25

<PAGE>   34



    required by such exchange, if, after notice given by the Company to the
    Trustee of the proposed payment pursuant to this Clause, such manner of
    payment shall be deemed practicable by the Trustee.

        Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture, upon registration of transfer of, in exchange
for or in lieu of, any other Security, shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

SECTION 308.  Persons Deemed Owners.

        Prior to due presentment of a Security for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
Person in whose name such Security is registered as the owner of such Security
for the purpose of receiving payment of principal of (and premium, if any) and
(subject to Sections 305 and 307) interest on such Security and for all other
purposes whatsoever, whether or not such Security be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

SECTION 309.  Cancellation.

        All Securities surrendered for payment, redemption, registration of
transfer or exchange or for credit against any sinking fund payment shall, if
surrendered to any Person other than the Trustee, be delivered to the Trustee.
All Securities so delivered shall be promptly cancelled by the Trustee. The
Company may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company may have
acquired in any manner whatsoever, and all Securities so delivered shall be
promptly cancelled by the Trustee. No Securities shall be authenticated in lieu
of or in exchange for any Securities cancelled as provided in this Section,
except as expressly permitted by this Indenture. All cancelled Securities held
by the Trustee shall be disposed of as directed by a Company Order; provided
that the Trustee shall not be required to destroy such Securities.

SECTION 310.  Computation of Interest.

        Except as otherwise specified as contemplated by Section 301 for
Securities of any series, interest on the Securities of each series shall be
computed on the basis of a year of twelve 30-day months.

SECTION 311.  CUSIP Numbers.

        The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall use "CUSIP" numbers in notices
of redemption as a convenience to Holders; provided that any such notice may
state that no representation is made as to the correctness of such numbers
either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other identification
numbers printed on the


                                       26

<PAGE>   35



Securities, and any such redemption shall not be affected by any defect in or
omission of such numbers.

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture.

        This Indenture shall upon Company Request cease to be of further effect
with respect to Securities of a series, and the Trustee, at the expense of the
Company, shall execute proper instruments acknowledging satisfaction and
discharge of this Indenture with respect to Securities of such series, when

        (1) either

              (A) all Securities of such series theretofore authenticated and
        delivered (other than (i) Securities which have been destroyed, lost or
        stolen and which have been replaced or paid as provided in Section 306,
        and (ii) Securities for whose payment money has theretofore been
        deposited in trust or segregated and held in trust by the Company and
        thereafter repaid to the Company or discharged from such trust, as
        provided in Section 1003) have been delivered to the Trustee for
        cancellation; or

              (B) with respect to all Outstanding Securities of such series not
        theretofore delivered to the Trustee for cancellation, the Company has
        deposited or caused to be deposited with the Trustee as trust funds,
        under the terms of an irrevocable trust agreement in form and substance
        satisfactory to the Trustee, money or U.S. Government Obligations
        maturing as to principal and interest in such amounts and at such times
        as will (together with the income to accrue thereon and without
        consideration of any reinvestment thereof) be sufficient to pay and
        discharge (with such delivery in trust to be for the stated purpose of
        paying and discharging) the entire indebtedness on all Outstanding
        Securities of such series not theretofore delivered to the Trustee for
        cancellation for principal (and premium and Additional Amounts, if any)
        and interest to the Stated Maturity or any Redemption Date contemplated
        by the penultimate paragraph of this Section, as the case may be; or

              (C) the Company has properly fulfilled such other means of
        satisfaction and discharge as is specified, as contemplated by Section
        301, to be applicable to the Securities of such series;

        (2) the Company has paid or caused to be paid all other sums payable
    hereunder by the Company with respect to the Outstanding Securities of such
    series;



                                       27

<PAGE>   36



        (3) the Company has complied with any other conditions specified
    pursuant to Section 301 to be applicable to the discharge of Securities of
    such series pursuant to this Section 401;

        (4) the Company has delivered to the Trustee an Officers' Certificate
    and an Opinion of Counsel, each stating that all conditions precedent herein
    provided for relating to the satisfaction and discharge of this Indenture
    with respect to the Outstanding Securities of such series have been complied
    with;

        (5) if the conditions set forth in Section 401(1)(A) have not been
    satisfied, and unless otherwise specified pursuant to Section 301 for the
    Securities of such series, the Company has delivered to the Trustee an
    Opinion of Counsel to the effect that the Holders of Securities of such
    series will not recognize income, gain or loss for United States federal
    income tax purposes as a result of such deposit, satisfaction and discharge
    and will be subject to United States federal income tax on the same amount
    and in the same manner and at the same time as would have been the case if
    such deposit, satisfaction and discharge had not occurred; and

        (6) no Default or Event of Default with respect to the Securities of
    such issue shall have occurred and be continuing on the date of such deposit
    or, insofar as clauses (5) or (6) of Section 501 are concerned, at any time
    in the period ending on the 91st day after the date of such deposit (it
    being understood that this condition shall not be deemed satisfied until the
    expiration of such period).

        For the purposes of this Indenture, "U.S. Government Obligations" means
direct non-callable obligations of, or non-callable obligations the payment of
principal of and interest on which is guaranteed by, the United States of
America, or to the payment of which obligations or guarantees the full faith and
credit of the United States of America is pledged, or beneficial interests in a
trust the corpus of which consists exclusively of money or such obligations or a
combination thereof.

        If any Outstanding Securities of such series are to be redeemed prior to
their Stated Maturity, whether pursuant to any optional redemption provisions or
in accordance with any mandatory sinking fund requirement, the trust agreement
referred to in subclause (B) of clause (1) of this Section shall provide
therefor and the Company shall make such arrangements as are satisfactory to the
Trustee for the giving of notice of redemption by the Trustee in the name, and
at the expense, of the Company.

        Notwithstanding the satisfaction and discharge of this Indenture with
respect to the Outstanding Securities of such series pursuant to this Section
401, the obligations of the Company to the Trustee under Section 607, the
obligations to any Authenticating Agent under Section 614 and, except for a
discharge pursuant to subclause (A) of clause (1) of this Section, the
obligations of the Company under Sections 305, 306, 404, 610(e), 701, 1001 and
1002 and the obligations of the Trustee under Section 402 and the last paragraph
of Section 1003 shall survive.



                                       28

<PAGE>   37



SECTION 402.  Application of Trust Money.

        Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in trust
and applied by it, in accordance with the provisions of the Securities, and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any) and interest and Additional Amounts for the payment of which such money has
been deposited with the Trustee.

SECTION 403.  Discharge of Liability on Securities of Any Series.

        If this Section is specified, as contemplated by Section 301, to be
applicable to Securities of any series, the Company shall be deemed to have paid
and discharged the entire indebtedness on all the Outstanding Securities of such
series, the obligation of the Company under this Indenture and the Securities of
such series to pay the principal of (and premium, if any) and interest on and
any Additional Amounts with respect to Securities of such series, shall cease,
terminate and be completely discharged and the Trustee, at the expense of the
Company, shall execute proper instruments acknowledging such satisfaction and
discharge, when

        (1) the Company has complied with the provisions of Section 401 (other
    than any additional conditions specified pursuant to Sections 301 and 401(3)
    and except that the Opinion of Counsel referred to in Section 401(5) shall
    state that it is based on a ruling by the Internal Revenue Service or other
    change since the date hereof under applicable Federal income tax law) with
    respect to all Outstanding Securities of such series,

        (2) the Company has delivered to the Trustee a Company Request
    requesting such satisfaction and discharge,

        (3) the Company has complied with any other conditions specified
    pursuant to Section 301 to be applicable to the discharge of Securities of
    such series pursuant to this Section 403, and

        (4) the Company has delivered to the Trustee an Officers' Certificate
    and an Opinion of Counsel, each stating that all conditions precedent herein
    provided for relating to the discharge of the indebtedness on the
    Outstanding Securities of such series have been complied with.

        Upon the satisfaction of the conditions set forth in this Section with
respect to all the Outstanding Securities of any series, the terms and
conditions of such series, including the terms and conditions with respect
thereto set forth in this Indenture, shall no longer be binding upon, or
applicable to, the Company; provided that, the Company shall not be discharged
from any payment obligations in respect of Securities of such series which are
deemed not to be Outstanding under clause (iii) of the definition thereof if
such obligations continue to be valid obligations of the Company under
applicable law or pursuant to Section 305 or 306.



                                       29

<PAGE>   38



SECTION 404.  Reinstatement

        If the Trustee or Paying Agent is unable to apply any money or U.S.
Government Obligations deposited with respect to Securities of any series in
accordance with Section 401 by reason of any legal proceeding or by reason of
any order or judgment of any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, the Company's obligations
under this Indenture with respect to the Securities of such series and the
Securities of such series shall be revived and reinstated as though no deposit
had occurred pursuant to Section 401 until such time as the Trustee or Paying
Agent is permitted to apply all such money or U.S. Government Obligations in
accordance with Section 401; provided, however, that if the Company has made any
payment of principal of (or premium, if any), or interest on or any Additional
Amounts with respect to any Securities because of the reinstatement of its
obligations, the Company shall be subrogated to the rights of the Holders of
such Securities to receive such payment from the money or U.S. Government
Obligations held by the Trustee or Paying Agent.

                                  ARTICLE FIVE

                                    REMEDIES

SECTION 501.  Events of Default.

        "Event of Default", wherever used herein with respect to Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be occasioned by the provisions of Article
Thirteen or be voluntary or involuntary or be effected by operation of law or
pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body), unless it is either
inapplicable to a particular series or it is specifically deleted or modified in
or pursuant to the supplemental indenture or Board Resolution establishing such
series of Securities or in the form of Security for such series:

        (1) default in the payment of any interest on or any Additional Amounts
    with respect to any Security of that series when such interest or Additional
    Amounts become due and payable, and continuance of such default for a period
    of 30 days; or

        (2) default in the payment of the principal of (or premium, if any, on)
    any Security of that series at its Maturity; or

        (3) default in the deposit of any mandatory sinking fund payment, when
    and as due by the terms of a Security of that series and continuance of such
    default for a period of 30 days; or

        (4) default in the performance or breach of any covenant or warranty of
    the Company in this Indenture (other than a covenant or warranty a default
    in whose performance or whose breach is elsewhere in this Section
    specifically dealt with or which has expressly been included in this
    Indenture solely for the benefit of one or more series of Securities other
    than that series), and continuance of such default or breach for a period of


                                       30

<PAGE>   39



    90 days after there has been given, by registered or certified mail, to
    the Company by the Trustee or to the Company and the Trustee by the Holders
    of at least 25% in principal amount of all Outstanding Securities a written
    notice specifying such default or breach and requiring it to be remedied and
    stating that such notice is a "Notice of Default" hereunder; or

        (5) the entry by a court having jurisdiction in the premises of (A) a
    decree or order for relief in respect of the Company in an involuntary case
    or proceeding under any applicable Federal or State bankruptcy, insolvency,
    reorganization or other similar law or (B) a decree or order adjudging the
    Company a bankrupt or insolvent, or approving as properly filed a petition
    seeking reorganization, arrangement, adjustment or composition of or in
    respect of the Company under any applicable Federal or State law, or
    appointing a custodian, receiver, liquidator, assignee, trustee,
    sequestrator or other similar official of the Company or of any substantial
    part of its property, or ordering the winding up or liquidation of its
    affairs, and the continuance of any such decree or order for relief or any
    such other decree or order unstayed and in effect for a period of 90
    consecutive days; or

        (6) the commencement by the Company of a voluntary case or proceeding
    under any applicable Federal or State bankruptcy, insolvency, reorganization
    or other similar law or of any other case or proceeding to be adjudicated a
    bankrupt or insolvent, or the consent by it to the entry of a decree or
    order for relief in respect of the Company in an involuntary case or
    proceeding under any applicable Federal or State bankruptcy, insolvency,
    reorganization or other similar law or to the commencement of any bankruptcy
    or insolvency case or proceeding against it, or the filing by it, of a
    petition or answer or consent seeking reorganization or relief under any
    applicable Federal or State law, or the consent by it to the filing of such
    petition or to the appointment of or taking possession by a custodian,
    receiver, liquidator, assignee, trustee, sequestrator or similar official of
    the Company or of any substantial part of its property, or the making by it
    of an assignment for the benefit of creditors, or the admission by it in
    writing of its inability to pay its debts generally as they become due, or
    the taking of corporate action by the Company in furtherance of any such
    action; or

        (7) any other Event of Default provided with respect to Securities of
    that series.

        Notwithstanding the foregoing provisions of this Section 501, if the
principal of (and premium, if any) or any interest on, or Additional Amounts
with respect to, any Security is payable in a currency or currencies (including
a composite currency) other than Dollars and such currency (or currencies) is
(or are) not available to the Company for making payment thereof due to the
imposition of exchange controls or other circumstances beyond the control of the
Company (a "Conversion Event"), the Company will be entitled to satisfy its
obligations to Holders of the Securities by making such payment in Dollars in an
amount equal to the Dollar equivalent of the amount payable in such other
currency, as determined by the Company by reference to the noon buying rate in
The City of New York for cable transfers for such currency ("Exchange Rate"), as
such Exchange Rate is certified for customs purposes by the Federal Reserve Bank
of New York on the date of such payment, or, if such rate is not then available,
on the basis of the most recently


                                       31

<PAGE>   40



available Exchange Rate. Notwithstanding the foregoing provisions of this
Section 501, any payment made under such circumstances in Dollars where the
required payment is in a currency other than Dollars will not constitute an
Event of Default under this Indenture.

        Promptly after the occurrence of a Conversion Event with respect to
Securities of any series, the Company shall give written notice thereof to the
Trustee; and the Trustee, promptly after receipt of such notice, shall give
notice thereof in the manner provided in Section 107 to the Holders of such
series. Promptly after the making of any payment in Dollars as a result of a
Conversion Event with respect to Securities of any series, the Company shall
give notice in the manner provided in Section 107 to the Holders of such series,
setting forth the applicable Exchange Rate and describing the calculation of
such payments.

SECTION 502.  Acceleration of Maturity; Rescission and Annulment.

        If an Event of Default with respect to any Securities of any series at
the time Outstanding occurs and is continuing, then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of (i) the series affected by such default (in the case
of an Event of Default described in clause (1), (2), (3) or (7) of Section 501)
or (ii) all series of Securities (subject to the immediately following sentence,
in the case of an Event of Default described in clause (4) of Section 501) may
declare the principal amount (or, if any such Securities are Original Issue
Discount Securities, such portion of the principal amount as may be specified in
the terms of that series) of all of the Securities of the series affected by
such default or all series, as the case may be, to be due and payable
immediately, by a notice in writing to the Company (and to the Trustee if given
by Holders), and upon any such declaration such principal amount (or specified
amount) shall become immediately due and payable. If an Event of Default
described in clause (5) or (6) of Section 501 shall occur, the principal amount
of the Outstanding Securities of all series ipso facto shall become and be
immediately due and payable without any declaration or other act on the part of
the Trustee or any Holder.

        At any time after such a declaration of acceleration with respect to
Securities of any series (or of all series, as the case may be) has been made
and before a judgment or decree for payment of the money due has been obtained
by the Trustee as hereinafter in this Article provided, the Holders of a
majority in principal amount of the Outstanding Securities of that series (or of
all series, as the case may be), by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if

        (1) the Company has paid or deposited with the Trustee a sum sufficient
    to pay

              (A) all overdue interest on, and any Additional Amounts with
        respect to, all Securities of that series (or of all series, as the case
        may be),

              (B) the principal of (and premium, if any, on) any Securities of
        that series (or of all series, as the case may be) which have become due
        otherwise than by such declaration of acceleration and interest thereon
        at the rate or rates prescribed therefor


                                       32

<PAGE>   41



        in such Securities (in the case of Original Issue Discount
        Securities, the Securities' Yield to Maturity),

              (C) to the extent that payment of such interest is lawful,
        interest upon overdue interest and any Additional Amounts at the rate or
        rates prescribed therefor in such Securities (in the case of Original
        Issue Discount Securities, the Securities' Yield to Maturity), and

              (D) all sums paid or advanced by the Trustee hereunder and the
        reasonable compensation, expenses, disbursements and advances of the
        Trustee, its agents and counsel;

    and

        (2) all Events of Default with respect to Securities of that series (or
    of all series, as the case may be), other than the non-payment of the
    principal of Securities of that series (or of all series, as the case may
    be) which have become due solely by such declaration of acceleration, have
    been cured or waived as provided in Section 512.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.

        The Company covenants that if

        (1) default is made in the payment of any installment of interest on, or
    any Additional Amounts with respect to, any Security of any series when such
    interest or Additional Amounts shall have become due and payable and such
    default continues for a period of 30 days, or

        (2) default is made in the payment of the principal of (or premium, if
    any, on) any Security at the Maturity thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal (and premium, if any) and interest and Additional
Amounts and, to the extent that payment of such interest shall be legally
enforceable, interest on any overdue principal (and premium, if any) and on any
overdue interest and Additional Amounts, at the rate or rates prescribed
therefor in such Securities (or in the case of Original Issue Discount
Securities, the Securities' Yield to Maturity), and, in addition thereto, such
further amount as shall be sufficient to cover the costs and expenses of
collection, including the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel.

        If the Company fails to pay such amounts forthwith upon such demand, the
Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the


                                       33

<PAGE>   42



collection of the sums so due and unpaid, may prosecute such proceeding to
judgment or final decree and may enforce the same against the Company or any
other obligor upon such Securities and collect the moneys adjudged or decreed to
be payable in the manner provided by law out of the property of the Company or
any other obligor upon such Securities, wherever situated.

        If an Event of Default with respect to Securities of any series occurs
and is continuing, the Trustee may in its discretion proceed to protect and
enforce its rights and the rights of the Holders of Securities of such series by
such appropriate judicial proceedings as the Trustee shall deem most effectual
to protect and enforce any such rights, whether for the specific enforcement of
any covenant or agreement in this Indenture or in aid of the exercise of any
power granted herein, or to enforce any other proper remedy.

SECTION 504.  Trustee May File Proofs of Claim.

        In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any other obligor upon the
Securities or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal (or lesser amount
in the case of Original Issue Discount Securities) of the Securities shall then
be due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Trustee shall have made any demand on the Company
for the payment of overdue principal (and premium, if any), interest or any
Additional Amounts) shall be entitled and empowered, by intervention in such
proceeding or otherwise,

        (i) to file and prove a claim for the whole amount of principal (or
    lesser amount in the case of Original Issue Discount Securities) (and
    premium, if any) and interest and any Additional Amounts owing and unpaid in
    respect of the Securities and to file such other papers or documents as may
    be necessary or advisable in order to have the claims of the Trustee
    (including any claim for the reasonable compensation, expenses,
    disbursements and advances of the Trustee, its agents and counsel) and of
    the Holders allowed in such judicial proceeding, and

        (ii) to collect and receive any monies or other property payable or
    deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders, to
pay to the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 607.

        Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Securities
or the rights of any Holder thereof or to authorize


                                       34

<PAGE>   43



the Trustee to vote in respect of the claim of any Holder in any such
proceedings; provided, however, that the Trustee may, on behalf of the Holders,
vote for the election of a trustee in bankruptcy or similar official.

SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or
              Coupons.

        All rights of action and claim under this Indenture or the Securities
may be prosecuted and enforced by the Trustee without possession of any of the
Securities or the production thereof in any proceeding relating thereto, and any
such proceeding instituted by the Trustee shall be brought in its own name as
trustee of an express trust, and any recovery of judgment shall, after provision
for the payment of the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel, be for the ratable benefit of
the Holders of the Securities in respect of which such judgment has been
recovered.

SECTION 506.  Application of Money Collected.

        Subject to Article Thirteen, any money collected by the Trustee pursuant
to this Article shall be applied in the following order, at the date or dates
fixed by the Trustee and, in case of the distribution of such money on account
of principal (or premium, if any), interest or any Additional Amounts, upon
presentation of the Securities, and the notation thereon of the payment if only
partially paid and upon surrender thereof if fully paid:

        FIRST: To the payment of all amounts due the Trustee under Section 607;

        SECOND: To the payment of the amounts then due and unpaid for principal
    of (and premium, if any) and interest on and any Additional Amounts with
    respect to the Securities in respect of which or for the benefit of which
    such money has been collected, ratably, without preference or priority of
    any kind, according to the amounts due and payable on such Securities for
    principal (and premium, if any), interest and Additional Amounts,
    respectively; and

        THIRD: The balance, if any, to the Person or Persons entitled thereto.

        To the fullest extent allowed under applicable law, if for the purpose
of obtaining judgment against the Company in any court it is necessary to
convert the sum due in respect of the principal of (or premium, if any) or
interest on or any Additional Amounts with respect to the Securities of any
series (the "Required Currency") into a currency in which a judgment will be
rendered (the "Judgment Currency"), the rate of exchange used shall be the rate
at which in accordance with normal banking procedures the Trustee could purchase
in The City of New York the Required Currency with the Judgment Currency on the
New York Business Day next preceding that on which final judgment is given.
Neither the Company nor the Trustee shall be liable for any shortfall nor shall
it benefit from any windfall in payments to Holders of Securities under this
Section caused by a change in exchange rates between the time the amount of a
judgment against it is calculated as above and the time the Trustee converts the
Judgment Currency into the Required Currency to make payments under this Section
to Holders of Securities, but payment of such


                                       35

<PAGE>   44


judgment shall discharge all amounts owed by the Company on the claim or claims
underlying such judgment.

SECTION 507.  Limitation on Suits.

        Subject to Section 508, no Holder of any Security of any series shall
have any right to institute any proceeding, judicial or otherwise, with respect
to this Indenture, or for the appointment of a receiver or trustee, or for any
other remedy hereunder, unless

        (1) an Event of Default with respect to Securities of such series shall
    have occurred and be continuing and such Holder has previously given written
    notice to the Trustee of such continuing Event of Default;

        (2) the Holders of not less than 25% in principal amount of the
    Outstanding Securities of that series shall have made written request to the
    Trustee to institute proceedings in respect of such Event of Default in its
    own name as Trustee hereunder;

        (3) such Holder or Holders have offered to the Trustee reasonable
    indemnity against the costs, expenses and liabilities to be incurred in
    compliance with such request;

        (4) the Trustee for 60 days after its receipt of such notice, request
    and offer of indemnity has failed to institute any such proceeding; and

        (5) no direction inconsistent with such written request has been given
    to the Trustee during such 60-day period by the Holders of a majority in
    principal amount of the Outstanding Securities of that series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

SECTION 508.  Unconditional Right of Holders to Receive Principal Premium and 
Interest.

        Notwithstanding any other provision in this Indenture, the Holder of any
Security shall have the right, which is absolute and unconditional, to receive
payment of the principal of (and premium, if any) and (subject to Section 307)
interest on and any Additional Amounts with respect to such Security on the
Stated Maturity or Maturities expressed in such Security (or, in the case of
redemption, on the Redemption Date) and to institute suit for the enforcement of
any such payment, and such rights shall not be impaired or affected without the
consent of such Holder.



                                       36

<PAGE>   45



SECTION 509.   Restoration of Rights and Remedies.

        If the Trustee or any Holder of any Security has instituted any
proceeding to enforce any right or remedy under this Indenture and such
proceeding has been discontinued or abandoned for any reason, then and in every
such case the Company, the Trustee and the Holders shall, subject to any
determination in such proceeding, be restored severally and respectively to
their former positions hereunder, and thereafter all rights and remedies of the
Trustee and the Holders shall continue as though no such proceeding had been
instituted.

SECTION 510.  Rights and Remedies Cumulative.

        Except as otherwise provided with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Securities in the last paragraph of
Section 306, no right or remedy herein conferred upon or reserved to the Trustee
or to the Holders is intended to be exclusive of any other right or remedy, and
every right and remedy shall, to the extent permitted by law, be cumulative and
in addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

SECTION 511.  Delay or Omission Not Waiver.

        No delay or omission of the Trustee or of any Holder of any Securities
to exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default or
an acquiescence therein. Every right and remedy given by this Article or by law
to the Trustee or to the Holders may be exercised from time to time, and as
often as may be deemed expedient, by the Trustee or by the Holders, as the case
may be.

SECTION 512.  Control by Holders.

        With respect to Securities of any series, the Holders of a majority in
principal amount of the Outstanding Securities of such series shall have the
right to direct the time, method and place of conducting any proceeding for any
remedy available to the Trustee, or exercising any trust or power conferred on
the Trustee, relating to or arising under an Event of Default described in
clause (1), (2), (3) or (7) of Section 501, and with respect to all Securities
the Holders of a majority in principal amount of all Outstanding Securities
shall have the right to direct the time, method and place of conducting any
remedy available to the Trustee, or exercising any trust or power conferred on
the Trustee, not relating to or arising under such an Event of Default, provided
that in each such case

        (1) such direction shall not be in conflict with any rule of law or with
    this Indenture, and

        (2) the Trustee may take any other action deemed proper by the Trustee
    which is not inconsistent with such direction.


                                       37

<PAGE>   46



SECTION 513.  Waiver of Past Defaults.

        The Holders of a majority in principal amount of the Outstanding
Securities of any series may on behalf of the Holders of all the Securities of
such series waive any past default hereunder with respect to such series and its
consequences, and the Holders of a majority in principal amount of all
Outstanding Securities may on behalf of the Holders of all Securities waive any
other past default hereunder and its consequences, except in each case a default

        (1) in the payment of the principal of (or premium, if any) or interest
    on, or any Additional Amounts with respect to, any Security, or

        (2) in respect of a covenant or provision hereof which under Article
    Nine cannot be modified or amended without the consent of the Holder of each
    Outstanding Security affected.

        Upon any such waiver, such default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

SECTION 514.  Undertaking for Costs.

        All parties to this Indenture agree, and each Holder of any Security by
his acceptance thereof shall be deemed to have agreed, that any court may in its
discretion require, in any suit for the enforcement of any right or remedy under
this Indenture, or in any suit against the Trustee for any action taken or
omitted by it as Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its
discretion assess reasonable costs, including reasonable attorneys' fees,
against any party litigant in such suit, having due regard to the merits and
good faith of the claims or defenses made by such party litigant; but the
provisions of this Section shall not apply to any suit instituted by the
Company, to any suit instituted by the Trustee, to any suit instituted by any
Holder, or group of Holders, holding in the aggregate more than 10% in principal
amount of the Outstanding Securities of any series, or to any suit instituted by
any Holder for the enforcement of the payment of the principal of (or premium,
if any) or interest on, or any Additional Amounts with respect to, any Security
on or after the Stated Maturity or Maturities expressed in such Security (or, in
the case of redemption, on or after the Redemption Date).

SECTION 515.   Waiver of Stay or Extension Laws.

        The Company covenants (to the extent that it may lawfully do so) that it
will not at any time insist upon, or plead, or in any manner whatsoever claim or
take the benefit or advantage of, any stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such
law, and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.



                                       38

<PAGE>   47



                                   ARTICLE SIX

                                   THE TRUSTEE

SECTION 601.  Certain Duties and Responsibilities.

        (a) Except during the continuance of an Event of Default with respect to
    the Securities of any series,

              (1) the Trustee undertakes to perform such duties and only such
        duties as are specifically set forth in this Indenture, and no implied
        covenants or obligations shall be read into this Indenture against the
        Trustee; and

              (2) in the absence of bad faith on its part, the Trustee may
        conclusively rely, as to the truth of the statements and the correctness
        of the opinions expressed therein, upon certificates or opinions
        furnished to the Trustee and conforming to the requirements of this
        Indenture; but in the case of any such certificates or opinions which by
        any provision hereof are specifically required to be furnished to the
        Trustee, the Trustee shall be under a duty to examine the same to
        determine whether or not they conform to the requirements of this
        Indenture.

        (b) In case an Event of Default has occurred and is continuing with
    respect to the Securities of any series, the Trustee shall exercise such of
    the rights and powers vested in it by this Indenture, and use the same
    degree of care and skill in their exercise, as a prudent man would exercise
    or use under the circumstances in the conduct of his own affairs.

        (c) No provision of this Indenture shall be construed to relieve the
    Trustee from liability for its own negligent action, its own negligent
    failure to act or its own willful misconduct, except that

              (1) this Subsection shall not be construed to limit the effect of
        Subsection (a) of this Section;

              (2) the Trustee shall not be liable for any error of judgment made
        in good faith by a Responsible Officer, unless it shall be proved that
        the Trustee was negligent in ascertaining the pertinent facts;

              (3) the Trustee shall not be liable with respect to any action
        taken or omitted to be taken by it in good faith in accordance with the
        direction of the Holders of a majority in principal amount of the
        Outstanding Securities of any series or of all series, determined as
        provided in Section 511, relating to the time, method and place of
        conducting any proceeding for any remedy available to the Trustee, or
        exercising any trust or power conferred upon the Trustee, under this
        Indenture with respect to the Securities of such series; and



                                       39

<PAGE>   48



              (4) no provision of this Indenture shall require the Trustee to
        expend or risk its own funds or otherwise incur any financial liability
        in the performance of any of its duties hereunder, or in the exercise of
        any of its rights or powers, if it shall have reasonable grounds for
        believing that repayment of such funds or indemnity satisfactory to it
        against such risk or liability is not assured to it.

        (d) Whether or not therein expressly so provided, every provision of
    this Indenture relating to the conduct or affecting the liability of or
    affording protection to the Trustee shall be subject to the provisions of
    this Section.

SECTION 602.  Notice of Defaults.

        Within 90 days after the occurrence of any default hereunder with
respect to the Securities of any series, the Trustee shall give notice of such
default hereunder known to the Trustee to all Holders of Securities of such
series in the manner provided in Section 107, unless such default shall have
been cured or waived; provided, however, that, except in the case of a default
in the payment of the principal of (or premium, if any) or interest on, or any
Additional Amounts with respect to, any Security of such series or in the
payment of any sinking fund installment with respect to Securities of such
series, the Trustee shall be protected in withholding such notice if and so long
as the board of directors, the executive committee or a trust committee of
directors or Responsible Officers of the Trustee in good faith determines that
the withholding of such notice is in the interest of the Holders of Securities
of such series; and provided, further, that in the case of any default of the
character specified in Section 501(4) with respect to Securities of such series,
no such notice to Holders shall be given until at least 30 days after the
occurrence thereof. For the purpose of this Section, the term "default" means
any event, act or condition which is, or after notice or lapse of time or both
would become, an Event of Default with respect to Securities of such series.

SECTION 603.  Certain Rights of Trustee.

        Subject to the provisions of Section 601:

        (a) the Trustee may rely and shall be protected in acting or refraining
    from acting upon any resolution, certificate, statement, instrument,
    opinion, report, notice, request, direction, consent, order, bond,
    debenture, note, coupon, other evidence of indebtedness or other paper or
    document believed by it to be genuine and to have been signed or presented
    by the proper party or parties;

        (b) any request or direction of the Company mentioned herein shall be
    sufficiently evidenced by a Company Request or Company Order and any
    resolution of the Board of Directors may be sufficiently evidenced by a
    Board Resolution;

        (c) whenever in the administration of this Indenture the Trustee shall
    deem it desirable that a matter be proved or established prior to taking,
    suffering or omitting any action hereunder, the Trustee (unless other
    evidence be herein specifically prescribed) may, in the absence of bad faith
    on its part, rely upon an Officers' Certificate;


                                       40

<PAGE>   49



        (d) the Trustee may consult with counsel and the written advice of such
    counsel or any Opinion of Counsel shall be full and complete authorization
    and protection in respect of any action taken, suffered or omitted by it
    hereunder in good faith and in reliance thereon;

        (e) the Trustee shall be under no obligation to exercise any of the
    rights or powers vested in it by this Indenture at the request or direction
    of any of the Holders pursuant to this Indenture, unless such Holders shall
    have offered to the Trustee security or indemnity satisfactory to it against
    the costs, expenses and liabilities which might be incurred by it in
    compliance with such request or direction;

        (f) the Trustee shall not be bound to make any investigation into the
    facts or matters stated in any resolution, certificate, statement,
    instrument, opinion, report, notice, request, direction, consent, order,
    bond, debenture, note, coupon, other evidence of indebtedness or other paper
    or document, but the Trustee, in its discretion, may make such further
    inquiry or investigation into such facts or matters as it may see fit, and,
    if the Trustee shall determine to make such further inquiry or
    investigation, it shall be entitled to examine the books, records and
    premises of the Company, personally or by agent or attorney; and

        (g) the Trustee may execute any of the trusts or powers hereunder or
    perform any duties hereunder either directly or by or through agents or
    attorneys and, except for any Affiliates of the Trustee, the Trustee shall
    not be responsible for any misconduct or negligence on the part of any agent
    or attorney appointed with due care by it hereunder.

SECTION 604.  Not Responsible for Recitals or Issuance of Securities.

        The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company, and the Trustee assumes no responsibility for their correctness.
The Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities. The Trustee shall not be accountable for the use
or application by the Company of Securities or the proceeds thereof.

SECTION 605.  May Hold Securities.

        The Trustee, any Authenticating Agent, any Paying Agent, any Security
Registrar or any other agent of the Company, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to Sections
608 and 613, may otherwise deal with the Company with the same rights it would
have if it were not Trustee, Authenticating Agent, Paying Agent, Security
Registrar or such other agent.

SECTION 606.  Money Held in Trust.

        Money held by the Trustee in trust hereunder need not be segregated from
other funds except to the extent required by law. The Trustee shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed with the Company.



                                       41

<PAGE>   50



SECTION 607.  Compensation and Reimbursement.

        The Company agrees

        (1) to pay to the Trustee from time to time compensation for all
    services rendered by it hereunder (which compensation shall not be limited
    by any provision of law in regard to the compensation of a trustee of an
    express trust);

        (2) except as otherwise expressly provided herein, to reimburse the
    Trustee upon its request for all reasonable expenses, disbursements and
    advances incurred or made by the Trustee in accordance with any provision of
    this Indenture (including the compensation and the reasonable expenses and
    disbursements of its agents and counsel), except any such expense,
    disbursement or advance as may be attributable to its negligence or bad
    faith; and

        (3) to indemnify the Trustee and each of its directors, officers,
    employees, agents and/or representatives for, and to hold each of them
    harmless against, any loss, liability or expense incurred without negligence
    or bad faith on each of their part, arising out of or in connection with the
    acceptance or administration of the trust or trusts hereunder, including the
    costs and expenses of defending themselves against any claim or liability in
    connection with the exercise or performance of any of the Trustee's powers
    or duties hereunder.

        As security for the performance of the obligations of the Company under
this Section, the Trustee shall have a lien prior to the Securities upon all
property and funds held or collected by the Trustee as such, except funds held
in trust for the payment of principal of, premium, if any, or interest, if any,
on, or any Additional Amounts with respect to, particular Securities.

        Any expenses and compensation for any services rendered by the Trustee
after the occurrence of an Event of Default specified in clause (5) or (6) of
Section 501 shall constitute expenses and compensation for services of
administration under all applicable federal or state bankruptcy, insolvency,
reorganization or other similar laws.

        The provisions of this Section shall survive the termination of this
Indenture.

SECTION 608.  Disqualification; Conflicting Interests.

        (a) If the Trustee has or shall acquire any conflicting interest, as
    defined in this Section, with respect to the Securities of any series, it
    shall, within 90 days after ascertaining that it has such conflicting
    interest, either eliminate such conflicting interest or resign with respect
    to the Securities of that series in the manner and with the effect
    hereinafter specified in this Article.

        (b) In the event that the Trustee shall fail to comply with the
    provisions of Subsection (a) of this Section with respect to the Securities
    of any series, the Trustee shall, within 10 days after the expiration of
    such 90-day period, transmit by mail to all Holders of


                                       42

<PAGE>   51



    Securities of that series, as their names and addresses appear in the
    Security Register, notice of such failure.

        (c) For the purposes of this Section, the term "conflicting interest"
    shall have the meaning specified in Section 310(b) of the Trust Indenture
    Act and the Trustee shall comply with Section 310(b) of the Trust Indenture
    Act; provided that there shall be excluded from the operation of Section
    310(b)(1) of the Trust Indenture Act with respect to the Securities of any
    series any indenture or indentures under which other securities, or
    certificates of interest or participation in other securities, of the
    Company are outstanding, if the requirements for such exclusion set forth in
    Section 310(b)(1) of the Trust Indenture Act are met. For purposes of the
    preceding sentence, the optional provision permitted by the second sentence
    of Section 310(b)(9) of the Trust Indenture Act shall be applicable.

SECTION 609.  Corporate Trustee Required; Eligibility.

        There shall at all times be a Trustee hereunder which shall be a
corporation organized and doing business under the laws of the United States of
America, any State thereof or the District of Columbia, authorized under such
laws to exercise corporate trust powers, having a combined capital and surplus
of at least $50,000,000 and subject to supervision or examination by Federal or
State (or District of Columbia) authority. If such corporation publishes reports
of condition at least annually, pursuant to law or to the requirements of said
supervising or examining authority, then for the purposes of this Section, the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published. If at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section, it shall resign immediately in
the manner and with the effect hereinafter specified in this Article.

        The Indenture shall always have a Trustee who satisfies the requirements
of Sections 310(a)(1), 310(a)(2) and 310(a)(5) of the Trust Indenture Act.

SECTION 610.  Resignation and Removal; Appointment of Successor.

        (a) No resignation or removal of the Trustee and no appointment of a
    successor Trustee pursuant to this Article shall become effective until the
    acceptance of appointment by the successor Trustee in accordance with the
    applicable requirements of Section 611.

        (b) The Trustee may resign at any time with respect to the Securities of
    one or more series by giving written notice thereof to the Company. If the
    instrument of acceptance by a successor Trustee required by Section 611
    shall not have been delivered to the resigning Trustee within 30 days after
    the giving of such notice of resignation, the resigning Trustee may petition
    any court of competent jurisdiction for the appointment of a successor
    Trustee with respect to the Securities of such series.

        (c) The Trustee may be removed at any time with respect to the
    Securities of any series by Act of the Holders of a majority in principal
    amount of the Outstanding Securities of such series, delivered to the
    Trustee and to the Company.


                                       43

<PAGE>   52



        (d) If at any time:

              (1) the Trustee shall fail to comply with Section 608(a) after
        written request therefor by the Company or by any Holder who has been a
        bona fide Holder of a Security for at least six months, or

              (2) the Trustee shall cease to be eligible under Section 609 and
        shall fail to resign after written request therefor by the Company or by
        any such Holder of Securities, or

              (3) the Trustee shall become incapable of acting or shall be
        adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
        property shall be appointed or any public officer shall take charge or
        control of the Trustee or of its property or affairs for the purpose of
        rehabilitation, conservation or liquidation, then, in any such case, (i)
        the Company by a Board Resolution may remove the Trustee with respect to
        all Securities, or (ii) subject to Section 513, any Holder who has been
        a bona fide Holder of a Security for at least six months may, on behalf
        of himself and all others similarly situated, petition any court of
        competent jurisdiction for the removal of the Trustee with respect to
        all Securities and the appointment of a successor Trustee or Trustees.

        (e) If the Trustee shall resign, be removed or become incapable of
    acting, or if a vacancy shall occur in the office of Trustee for any cause,
    with respect to the Securities of one or more series, the Company, by a
    Board Resolution, shall promptly appoint a successor Trustee or Trustees
    with respect to the Securities of that or those series (it being understood
    that any such successor Trustee may be appointed with respect to the
    Securities of one or more or all of such series and that at any time there
    shall be only one Trustee with respect to the Securities of any particular
    series) and such successor Trustee or Trustees shall comply with the
    applicable requirements of Section 611. If no successor Trustee with respect
    to the Securities of any series shall have been so appointed by the Company
    and accepted appointment in the manner required by Section 611, any Holder
    who has been a bona fide Holder of a Security of such series for at least
    six months may, on behalf of himself and all others similarly situated,
    petition any court of competent jurisdiction for the appointment of a
    successor Trustee with respect to the Securities of such series.

        (f) The Company shall give notice of each resignation and each removal
    of the Trustee with respect to the Securities of any series and each
    appointment of a successor Trustee with respect to the Securities of any
    series by mailing written notice of such event by first-class mail, postage
    prepaid, to all Holders of Securities of such series as their names and
    addresses appear in the Security Register. Each notice shall include the
    name of the successor Trustee with respect to the Securities of such series
    and the address of its Corporate Trust Office.



                                       44

<PAGE>   53



SECTION 611.  Acceptance of Appointment by Successor.

        (a) In case of the appointment hereunder of a successor Trustee with
    respect to all Securities, every such successor Trustee so appointed shall
    execute, acknowledge and deliver to the Company and to the retiring Trustee
    an instrument accepting such appointment, and thereupon the resignation or
    removal of the retiring Trustee shall become effective and such successor
    Trustee, without any further act, deed or conveyance, shall become vested
    with all the rights, powers, trusts and duties of the retiring Trustee; but,
    on the request of the Company or the successor Trustee, such retiring
    Trustee shall, upon payment of its charges, execute and deliver an
    instrument transferring to such successor Trustee all the rights, powers and
    trusts of the retiring Trustee and shall duly assign, transfer and deliver
    to such successor Trustee all property and money held by such retiring
    Trustee hereunder.

        (b) In case of the appointment hereunder of a successor Trustee with
    respect to the Securities of one or more (but not all) series, the Company,
    the retiring Trustee and each successor Trustee with respect to the
    Securities of one or more series shall execute and deliver an indenture
    supplemental hereto wherein each successor Trustee shall accept such
    appointment and which (1) shall contain such provisions as shall be
    necessary or desirable to transfer and confirm to, and to vest in, each
    successor Trustee all the rights, powers, trusts and duties of the retiring
    Trustee with respect to the Securities of that or those series to which the
    appointment of such successor Trustee relates, (2) if the retiring Trustee
    is not retiring with respect to all Securities, shall contain such
    provisions as shall be deemed necessary or desirable to confirm that all the
    rights, powers, trusts and duties of the retiring Trustee with respect to
    the Securities of that or those series as to which the retiring Trustee is
    not retiring shall continue to be vested in the retiring Trustee and (3)
    shall add to or change any of the provisions of this Indenture as shall be
    necessary to provide for or facilitate the administration of the trusts
    hereunder by more than one Trustee, it being understood that nothing herein
    or in such supplemental indenture shall constitute such Trustees co-trustees
    of the same trust and that each such Trustee shall be trustee of a trust or
    trusts hereunder separate and apart from any trust or trusts hereunder
    administered by any other such Trustee; and upon the execution and delivery
    of such supplemental indenture, the resignation or removal of the retiring
    Trustee shall become effective to the extent provided therein and each such
    successor Trustee, without any further act, deed or conveyance, shall become
    vested with all the rights, powers, trusts and duties of the retiring
    Trustee with respect to the Securities of that or those series to which the
    appointment of such successor Trustee relates; but, on request of the
    Company or any successor Trustee, such retiring Trustee shall duly assign,
    transfer and deliver to such successor Trustee all property and money held
    by such retiring Trustee hereunder with respect to the Securities of that or
    those series to which the appointment of such successor Trustee relates.

        (c) Upon request of any such successor Trustee, the Company shall
    execute any and all instruments for more fully and certainly vesting in and
    confirming to such successor Trustee all such rights, powers and trusts
    referred to in paragraph (a) or (b) of this Section, as the case may be.



                                       45

<PAGE>   54



        (d) No successor Trustee shall accept its appointment unless at the time
    of such acceptance such successor Trustee shall be qualified and eligible
    under this Article.

SECTION 612.  Merger, Conversion, Consolidation or Succession to Business.

        Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided such
corporation shall be otherwise qualified and eligible under this Article,
without the execution or filing of any paper or any further act on the part of
any of the parties hereto. In case any Securities shall have been authenticated,
but not delivered, by the Trustee then in office, any successor by merger,
conversion or consolidation to such authenticating Trustee may adopt such
authentication and deliver the Securities so authenticated with the same effect
as if such successor Trustee had itself authenticated such Securities.

SECTION 613.  Preferential Collection of Claims Against Company.

        The Trustee shall comply with Section 311(a) of the Trust Indenture Act,
excluding any creditor relationship described in Section 311(b) of the Trust
Indenture Act. A Trustee who has resigned or been removed shall be subject to
Section 311(a) of the Trust Indenture Act to the extent indicated therein.

SECTION 614.  Appointment of Authenticating Agent.

        The Trustee may appoint an Authenticating Agent or Agents which shall be
authorized to act on behalf of the Trustee to authenticate Securities issued
upon original issue and upon exchange, registration of transfer or partial
redemption or pursuant to Section 306, and Securities so authenticated shall be
entitled to the benefits of this Indenture and shall be valid and obligatory for
all purposes as if authenticated by the Trustee hereunder. Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by an Authenticating Agent. Each Authenticating Agent shall be
acceptable to the Company and shall at all times be a corporation organized and
doing business under the laws of the United States of America, any State thereof
or the District of Columbia having a combined capital and surplus of not less
than $50,000,000 or equivalent amount expressed in a foreign currency and
subject to supervision or examination by Federal or State (or District of
Columbia) authority or authority of such country. If such Authenticating Agent
publishes reports of condition at least annually, pursuant to law or to the
requirements of said supervising or examining authority, then for the purposes
of this Section, the combined capital and surplus of such Authenticating Agent
shall be deemed to be its combined capital and surplus as set forth in its most
recent report of condition so published. If at any time an Authenticating Agent
shall cease to be eligible in accordance with the provisions of this Section,
such Authenticating Agent shall resign immediately in the manner and with the
effect specified in this Section.


                                       46

<PAGE>   55



        Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

        An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an Authenticating Agent by giving written notice thereof to such
Authenticating Agent and to the Company. Upon receiving such a notice of
resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, the Trustee may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall mail written notice of
such appointment by first-class mail, postage prepaid, to all Holders as their
names and addresses appear in the Security Register. Any successor
Authenticating Agent upon acceptance of its appointment hereunder shall become
vested with all the rights, powers and duties of its predecessor hereunder, with
like effect as if originally named as an Authenticating Agent. No successor
Authenticating Agent shall be appointed unless eligible under the provisions of
this Section.

        The Trustee agrees to pay to each Authenticating Agent from time to time
reasonable compensation for its services under this Section, and the Trustee
shall be entitled to be reimbursed for such payments, subject to the provisions
of Section 607.

        If an appointment is made pursuant to this Section, the Securities may
have endorsed thereon, in addition to the Trustee's certificate of
authentication, an alternate certificate of authentication in the following
form:

        "This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                                                            ,
                                             -------------------------------
                                               as Trustee


                                             By                             ,
                                               -----------------------------
                                               as Authenticating Agent


                                             By
                                               -----------------------------
                                               Authorized Signatory".



                                       47

<PAGE>   56



        Notwithstanding any provision of this Section 614 to the contrary, if at
any time any Authenticating Agent appointed hereunder with respect to any series
of Securities shall not also be acting as the Security Registrar hereunder with
respect to any series of Securities, then, in addition to all other duties of an
Authenticating Agent hereunder, such Authenticating Agent shall also be
obligated: (i) to furnish to the Security Registrar promptly all information
necessary to enable the Security Registrar to maintain at all times an accurate
and current Security Register; and (ii) prior to authenticating any Security
denominated in a foreign currency, to ascertain from the Company the units of
such foreign currency that are required to be determined by the Company pursuant
to Section 302.

                                  ARTICLE SEVEN

                HOLDER'S LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701. Company to Furnish Trustee Names and Addresses of Holders.

        With respect to each series of Securities, the Company will furnish or
cause to be furnished to the Trustee:

        (a) semi-annually, not more than 15 days after each Regular Record Date
    relating to that series (or, if there is no Regular Record Date relating to
    that series, on January 1 and July 1), a list, in such form as the Trustee
    may reasonably require, of the names and addresses of the Holders of that
    series as of such dates, and

        (b) at such other times as the Trustee may request in writing, within 30
    days after the receipt by the Company of any such request, a list of similar
    form and content, such list to be dated as of a date not more than 15 days
    prior to the time such list is furnished; provided, that so long as the
    Trustee is the Security Registrar, the Company shall not be required to
    furnish or cause to be furnished such a list to the Trustee. The Company
    shall otherwise comply with Section 310(a) of the Trust Indenture Act.

SECTION 702.  Preservation of Information; Communications to Holders.

        (a) The Trustee shall preserve, in as current a form as is reasonably
    practicable, the names and addresses of Holders of each series contained in
    the most recent list furnished to the Trustee as provided in Section 701 and
    the names and addresses of Holders of each series received by the Trustee in
    its capacity as Security Registrar, if applicable. The Trustee may destroy
    any list furnished to it as provided in Section 701 upon receipt of a new
    list so furnished. The Trustee shall otherwise comply with Section 310(a) of
    the Trust Indenture Act.

        (b) Holders of Securities may communicate pursuant to Section 312(b) the
    Trust Indenture Act with other Holders with respect to their rights under
    this Indenture or under the Securities.



                                       48

<PAGE>   57



        (c) Every Holder of Securities, by receiving and holding the same,
    agrees with the Company and the Trustee that neither the Company nor the
    Trustee nor any agent of either of them shall be held accountable by reason
    of the disclosure of any such information as to the names and addresses of
    the Holders in accordance with Section 702(b), regardless of the source from
    which such information was derived, and that the Trustee shall not be held
    accountable by reason of mailing any material pursuant to a request made
    under Section 702(b). The Company, the Trustee, the Security Registrar and
    any other Person shall have the protection of Section 312(c) of the Trust
    Indenture Act.

SECTION 703.  Reports by Trustee.

        (a) Within 60 days after May 15 of each year after the execution of this
    Indenture, the Trustee shall transmit by mail to Holders a brief report
    dated as of such May 15 that complies with Section 313(a) of the Trust
    Indenture Act.

        (b) The Trustee shall comply with Section 313(b) of the Trust Indenture
    Act.

        (c) Reports pursuant to this Section shall be transmitted by mail as
    required by Sections 313(c) and 313(d) of the Trust Indenture Act:

              (1) to all Holders of Securities, as the names and addresses of
        such Holders appear in the Security Register;

              (2) to such Holders of Securities as have, within the two years
        preceding such transmissions, filed their names and addresses with the
        Trustee for that purpose; and

              (3) except in the case of reports pursuant to Subsection (b) of
        this Section, to each Holder of a Security whose name and address is
        preserved at the time by the Trustee, as provided in Section 702(a).

        (d) A copy of each report pursuant to Subsection (a) or (b) of this
    Section 703 shall, at the time of its transmission to Holders, be filed by
    the Trustee with each stock exchange upon which any Securities are listed,
    with the Commission and with the Company. The Company will notify the
    Trustee when any Securities are listed on any stock exchange.

SECTION 704.  Reports by Company.

        The Company shall file with the Trustee, within 15 days after the
Company is required to file the same with the Commission, copies of the annual
reports and of the information, documents and other reports (or copies of such
portions of any of the foregoing as the Commission may from time to time by
rules and regulations prescribe) which the Company may be required to file with
the Commission pursuant to Section 13 or Section 15(d) of the Securities
Exchange Act of 1934, as amended, and shall otherwise comply with Section 314(a)
of the Trust Indenture Act.



                                       49

<PAGE>   58



                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms.

        The Company shall not consolidate with or merge into any other Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person, unless:

        (1) the Person formed by such consolidation or into which the Company is
    merged or the Person which acquires by conveyance or transfer, or which
    leases, the properties and assets of the Company substantially as an
    entirety shall be a corporation, partnership or trust and shall expressly
    assume, by an indenture supplemental hereto, executed and delivered to the
    Trustee, in form satisfactory to the Trustee, the due and punctual payment
    of the principal of (and premium, if any) and interest on and any Additional
    Amounts with respect to all the Securities and the performance of every
    covenant of this Indenture on the part of the Company to be performed or
    observed;

        (2) immediately after giving effect to such transaction, no Event of
    Default, and no event, act or condition which, after notice or lapse of time
    or both, would become an Event of Default, shall have happened and be
    continuing; and

        (3) the Company shall have delivered to the Trustee an Officers'
    Certificate and an Opinion of Counsel, each stating that such consolidation,
    merger, conveyance, transfer or lease and, if a supplemental indenture is
    required in connection with such transaction, such supplemental indenture
    comply with this Article and that all conditions precedent herein provided
    for relating to such transaction have been complied with.

SECTION 802.  Successor Person Substituted.

        Upon any consolidation by the Company with or merger by the Company into
any other Person or any conveyance, transfer or lease of the properties and
assets of the Company substantially as an entirety in accordance with Section
801, the successor Person formed by such consolidation or into which the Company
is merged or to which such conveyance, transfer or lease is made shall succeed
to, and be substituted for, and may exercise every right and power of, the
Company under this Indenture with the same effect as if such successor Person
had been named as the Company herein, and thereafter, except in the case of such
lease, the predecessor Person shall be relieved of all obligations and covenants
under this Indenture and the Securities.



                                       50

<PAGE>   59


                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders.

        Without the consent of any Holders, the Company, when authorized by a
Board Resolution, and the Trustee, at any time and from time to time, may enter
into one or more indentures supplemental hereto, in form satisfactory to the
Trustee, for any of the following purposes:

        (1) to evidence the succession of another Person to the Company and the
    assumption by any such successor of the covenants of the Company herein and
    in the Securities; or

        (2) to add to the covenants of the Company for the benefit of the
    Holders of all or any series of Securities (and if such covenants are to be
    for the benefit of less than all series of Securities, stating that such
    covenants are expressly being included solely for the benefit of such
    series), to convey, transfer, assign, mortgage or pledge any property to or
    with the Trustee or otherwise secure any series of the Securities or to
    surrender any right or power herein conferred upon the Company; or

        (3) to add any additional Events of Default with respect to all or any
    series of the Securities (and, if such Event of Default is applicable to
    less than all series of Securities, specifying the series to which such
    Event of Default is applicable); or

        (4) to change or eliminate any of the provisions of this Indenture,
    provided that any such change or elimination shall become effective only
    when there is no Security Outstanding of any series created prior to the
    execution of such supplemental indenture which is adversely affected by such
    change in or elimination of such provision; or

        (5) to establish the form or terms of Securities of any series as
    permitted by Sections 201 and 301; or

        (6) to supplement any of the provisions of this Indenture to such extent
    as shall be necessary to permit or facilitate the defeasance and discharge
    of any series of Securities pursuant to Section 401; provided, however, that
    any such action shall not adversely affect the interest of the Holders of
    Securities of such series or any other series of Securities in any material
    respect; or

        (7) to evidence and provide for the acceptance of appointment hereunder
    by a successor Trustee with respect to the Securities of one or more series
    and to add to or change any of the provisions of this Indenture as shall be
    necessary to provide for or facilitate the administration of the trusts
    hereunder by more than one Trustee, pursuant to the requirements of Section
    611(b); or


                                       51

<PAGE>   60



        (8) to cure any ambiguity, to correct or supplement any provision herein
    which may be defective or inconsistent with any other provision herein, or
    to make any other provisions with respect to matters or questions arising
    under this Indenture, provided such other provisions as may be made shall
    not adversely affect the interests of the Holders of Securities of any
    series in any material respect.

SECTION 902.  Supplemental Indentures With Consent of Holders.

        With the consent of the Holders of a majority in principal amount of the
Outstanding Securities of all series affected by such supplemental indenture
(acting as one class), by Act of said Holders delivered to the Company and the
Trustee, the Company, when authorized by a Board Resolution, and the Trustee may
enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
Holders of Securities of such series under this Indenture; provided, however,
that no such supplemental indenture shall, without the consent of the Holder of
each Outstanding Security affected thereby,

        (1) change the Stated Maturity of the principal of, or any installment
    of principal of or interest on, any Security, or reduce the principal amount
    thereof or the rate of interest thereon, any Additional Amounts with respect
    thereto or any premium payable upon the redemption thereof, or change any
    obligation of the Company to pay Additional Amounts (except as contemplated
    by Section 801(1) and permitted by Section 901(1)), or reduce the amount of
    the principal of an Original Issue Discount Security that would be due and
    payable upon a declaration of acceleration of the Maturity thereof pursuant
    to Section 502, or change any Place of Payment where, or the coin or
    currency or currencies (including composite currencies) in which, any
    Security or any premium or any interest thereon or Additional Amounts with
    respect thereto is payable, or impair the right to institute suit for the
    enforcement of any such payment on or after the Stated Maturity thereof (or,
    in the case of redemption, on or after the Redemption Date) or modify the
    provisions of this Indenture with respect to the subordination of any
    Security in a manner adverse to the Holder thereof, or

        (2) reduce the percentage in principal amount of Outstanding Securities,
    the consent of whose Holders is required for any such supplemental
    indenture, or the consent of whose Holders is required for any waiver (of
    compliance with certain provisions of this Indenture or certain defaults
    hereunder and their consequences) provided for in this Indenture, or

        (3) modify any of the provisions of this Section, Section 512 or Section
    1006, except to increase any such percentage or to provide with respect to
    any particular series the right to condition the effectiveness of any
    supplemental indenture as to that series on the consent of the Holders of a
    specified percentage of the aggregate principal amount of Outstanding
    Securities of such series (which provision may be made pursuant to Section
    301 without the consent of any Holder) or to provide that certain other
    provisions of this Indenture cannot be modified or waived without the
    consent of the Holder of each Outstanding Security affected thereby,
    provided, however, that this clause shall not be


                                       52

<PAGE>   61



    deemed to require the consent of any Holder with respect to changes in
    the references to "the Trustee" and concomitant changes in this Section and
    Section 1006, or the deletion of this proviso, in accordance with the
    requirements of Sections 611(b) and 901(7).

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

        It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.

SECTION 903.  Execution of Supplemental Indentures.

        In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 601) shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental indenture is
authorized or permitted by this Indenture. The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture which affects the
Trustee's own rights, duties, immunities or liabilities under this Indenture or
otherwise.

SECTION 904.  Effect of Supplemental Indentures.

        Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Securities theretofore or thereafter authenticated and delivered hereunder
shall be bound thereby.

SECTION 905.  Conformity With Trust Indenture Act.

        Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

SECTION 906.  Reference in Securities to Supplemental Indentures.

        Securities of any series authenticated and delivered after the execution
of any supplemental indenture pursuant to this Article may, and shall if
required by the Trustee, bear a notation in form approved by the Trustee as to
any matter provided for in such supplemental indenture. If the Company shall so
determine, new Securities of any series so modified as to conform, in the
opinion of the Trustee and the Company, to any such supplemental indenture may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.


                                       53

<PAGE>   62



                                   ARTICLE TEN

                                    COVENANTS

SECTION 1001.  Payment of Principal, Premium and Interest.

        The Company covenants and agrees for the benefit of each series of
Securities that it will duly and punctually pay the principal of (and premium,
if any), interest on and any Additional Amounts with respect to the Securities
of that series in accordance with the terms of the Securities and this
Indenture.

SECTION 1002.  Maintenance of Office or Agency.

        The Company will maintain in each Place of Payment for any series of
Securities an office or agency where Securities of that series may be presented
or surrendered for payment, where Securities of that series may be surrendered
for registration of transfer or exchange and where notices and demands to or
upon the Company in respect of the Securities of that series and this Indenture
may be served. The Company will give prompt written notice to the Trustee of the
location, and any change in the location, of such office or agency. If at any
time the Company shall fail to maintain any such required office or agency or
shall fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the Corporate Trust
Office of the Trustee.

        The Company may also from time to time designate one or more other
offices or agencies where the Securities of one or more series may be presented
or surrendered for any or all such purposes and may from time to time rescind
such designations; provided, however, that no such designation or rescission
shall in any manner relieve the Company of its obligation to maintain an office
or agency in each Place of Payment for Securities of any series for such
purposes. The Company will give prompt written notice to the Trustee of any such
designation or rescission and of any change in the location of any such other
office or agency.

SECTION 1003.  Money for Securities Payments to be Held in Trust.

        If the Company shall at any time act as its own Paying Agent with
respect to any series of Securities, it will, on or before each due date of the
principal of (and premium, if any) or interest on or any Additional Amounts with
respect to any of the Securities of that series, segregate and hold in trust for
the benefit of the Persons entitled thereto a sum sufficient to pay the
principal (and premium, if any) or interest or any Additional Amounts so
becoming due until such sums shall be paid to such Persons or otherwise disposed
of as herein provided and will promptly notify the Trustee of its action or
failure so to act.

        Whenever the Company shall have one or more Paying Agents for any series
of Securities, the Company will, on or before each due date of the principal of
(and premium, if any) or interest on any Securities of that series, deposit with
a Paying Agent a sum sufficient to pay the principal (and premium, if any) or
interest so becoming due, such sum to be held in trust for the


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<PAGE>   63



benefit of the Persons entitled to such principal, premium or interest, and
(unless such Paying Agent is the Trustee) the Company will promptly notify the
Trustee of its action or failure so to act.

        The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will:

        (1) hold all sums held by it for the payment of the principal of (and
    premium, if any), interest on or any Additional Amounts with respect to
    Securities of that series in trust for the benefit of the Persons entitled
    thereto until such sums shall be paid to such Persons or otherwise disposed
    of as herein provided;

        (2) give the Trustee notice of any default by the Company (or any other
    obligor upon the Securities of that series) in the making of any payment of
    principal (and premium, if any), interest on or any Additional Amounts with
    respect to the Securities of that series; and

        (3) at any time during the continuance of any such default, upon the
    written request of the Trustee, forthwith pay to the Trustee all sums so
    held in trust by such Paying Agent.

        The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which sums were held by the Company or such
Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such
Paying Agent shall be released from all further liability with respect to such
money.

        Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of (and premium, if
any) or interest on or any Additional Amounts with respect to any Security of
any series and remaining unclaimed for three years after such principal (and
premium, if any) or interest or Additional Amounts have become due and payable
shall, unless otherwise required by mandatory provisions of applicable escheat,
or abandoned or unclaimed property law, be paid to the Company on Company
Request, or (if then held by the Company) shall be discharged from such trust;
and the Holder of such Security shall thereafter, as an unsecured general
creditor, look only to the Company for payment thereof, and all liability of the
Trustee or such Paying Agent with respect to such trust money, and all liability
of the Company as trustee thereof, shall thereupon cease; provided, however,
that the Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in an
Authorized Newspaper in The Borough of Manhattan, The City of New York and in
such other Authorized Newspapers as the Trustee shall deem appropriate, notice
that such money remains unclaimed and that, after a date specified therein,
which shall not be less than 30 days from the date of such publication, any
unclaimed balance of such money then remaining will, unless otherwise required
by mandatory provisions of applicable escheat, or abandoned or unclaimed
property law, be repaid to the Company.


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SECTION 1004.  Existence.

        Subject to Article Eight, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its corporate
existence.

SECTION 1005.  Statement by Officers as to Default.

        The Company will deliver to the Trustee, within 120 days after the end
of each fiscal year of the Company ending after the date hereof so long as any
Security is outstanding hereunder, an Officers' Certificate, complying with
Section 314(a) of the Trust Indenture Act, stating that a review of the
activities of the Company during such year and of performance under this
Indenture has been made under the supervision of the signers thereof and whether
or not to the best of their knowledge, based upon such review, the Company is in
default in the performance, observance or fulfillment of any of its covenants
and other obligations under this Indenture, and if the Company shall be in
default, specifying each such default known to them and the nature and status
thereof. One of the officers signing the Officers' Certificate delivered
pursuant to this Section 1005 shall be the principal executive, financial or
accounting officer of the Company.

        For purposes of this Section, such compliance shall be determined
without regard to any period of grace or requirement of notice provided under
this Indenture.

SECTION 1006.  Waiver of Certain Covenants.

        The Company may omit in any particular instance to comply with any
covenant or condition set forth in Section 1004, or any covenant added for the
benefit of any series of Securities as contemplated by Section 301 (unless
otherwise specified pursuant to Section 301) if before or after the time for
such compliance the Holders of a majority in principal amount of the Outstanding
Securities of all series affected by such omission (acting as one class) shall,
by Act of such Holders, either waive such compliance in such instance or
generally waive compliance with such covenant or condition, but no such waiver
shall extend to or affect such covenant or condition except to the extent so
expressly waived, and, until such waiver shall become effective, the obligations
of the Company and the duties of the Trustee in respect of any such covenant or
condition shall remain in full force and effect.

SECTION 1007.  Additional Amounts.

        If the Securities of a series expressly provide for the payment of
Additional Amounts, the Company will pay to the Holder of any Security of such
series Additional Amounts as expressly provided therein. Whenever in this
Indenture there is mentioned, in any context, the payment of the principal of or
any premium or interest on, or in respect of, any Security of any series or the
net proceeds received from the sale or exchange of any Security of any series,
such mention shall be deemed to include mention of the payment of Additional
Amounts provided for in this Section to the extent that, in such context,
Additional Amounts are, were or would be payable in respect thereof pursuant to
the provisions of this Section and express mention of the payment of Additional


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<PAGE>   65



Amounts (if applicable) in any provisions hereof shall not be construed as
excluding Additional Amounts in those provisions hereof where such express
mention is not made.

        If the Securities of a series provide for the payment of Additional
Amounts, at least 10 days prior to the first Interest Payment Date with respect
to that series of Securities (or if the Securities of that series will not bear
interest prior to Maturity, the first day on which a payment of principal and
any premium is made), and at least 10 days prior to each date of payment of
principal and any premium or interest if there has been any change with respect
to the matters set forth in the below-mentioned Officers' Certificate, the
Company shall furnish the Trustee and the Company's principal Paying Agent or
Paying Agents, if other than the Trustee, with an Officers' Certificate
instructing the Trustee and such Paying Agent or Paying Agents whether such
payment of principal of and any premium or interest on the Securities of that
series shall be made to Holders of Securities of that series who are United
States Aliens without withholding for or on account of any tax, assessment or
other governmental charge described in the Securities of that series. If any
such withholding shall be required, then such Officers' Certificate shall
specify by country the amount, if any, required to be withheld on such payments
to such Holders of Securities and the Company will pay to such Paying Agent the
Additional Amounts required by this Section. The Company covenants to indemnify
the Trustee and any Paying Agent for, and to hold them harmless against any
loss, liability or expense reasonably incurred without negligence or bad faith
on their part arising out of or in connection with actions taken or omitted by
any of them in reliance on any Officers' Certificate furnished pursuant to this
Section 1007.

                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

SECTION 1101.  Applicability of Article.

        Securities of any series which are redeemable before their Stated
Maturity shall be redeemable in accordance with their terms and (except as
otherwise specified as contemplated by Section 301 for Securities of any series)
in accordance with this Article.

SECTION 1102.  Election to Redeem; Notice to Trustee.

        Unless otherwise provided with respect to the Securities of a series as
contemplated by Section 301, the election of the Company to redeem any
Securities shall be evidenced by a Board Resolution. In case of any redemption
at the election of the Company of less than all the Securities of any series,
the Company shall, a reasonable period prior to the Redemption Date fixed by the
Company (unless a shorter notice shall be satisfactory to the Trustee), notify
the Trustee of such Redemption Date and of the principal amount of Securities of
such series to be redeemed. In the case of any redemption of Securities prior to
the expiration of any restriction on such redemption provided in the terms of
such Securities or elsewhere in this Indenture, the Company shall furnish the
Trustee with an Officers' Certificate evidencing compliance with such
restriction.


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SECTION 1103.  Selection by Trustee of Securities to be Redeemed.

        If less than all the Securities of any series are to be redeemed, the
particular Securities to be redeemed shall be selected not more than 60 days
prior to the Redemption Date by the Trustee, from the Outstanding Securities of
such series not previously called for redemption, by such method as the Trustee
shall deem fair and appropriate and which may provide for the selection for
redemption of portions (equal to the minimum authorized denomination for
Securities of that series or any integral multiple thereof) of the principal
amount of Securities of such series of a denomination larger than the minimum
authorized denomination for Securities of that series or of the principal amount
of global Securities of such series.

        The Trustee shall promptly notify the Company and the Security Registrar
in writing of the Securities selected for redemption and, in the case of any
Securities selected for partial redemption, the principal amount thereof to be
redeemed.

        For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Securities shall relate,
in the case of any Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.

SECTION 1104.  Notice of Redemption.

        Notice of redemption shall be given in the manner provided in Section
107 to each Holder of Securities to be redeemed not less than 30 nor more than
60 days prior to the Redemption Date.

        All notices of redemption shall state:

        (1) the Redemption Date,

        (2) the Redemption Price,

        (3) if less than all the Outstanding Securities of any series are to be
    redeemed, the identification (and, in the case of partial redemption, the
    principal amounts) of the particular Securities to be redeemed,

        (4) that on the Redemption Date the Redemption Price will become due and
    payable upon each such Security to be redeemed and, if applicable, that
    interest thereon will cease to accrue on and after said date,

        (5) the place or places where such Securities are to be surrendered for
    payment of the Redemption Price,

        (6) that the redemption is for a sinking fund, if such is the case, and


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        (7) the "CUSIP" number, if applicable.

         A notice of redemption as contemplated by Section 107 need not identify
particular Securities to be redeemed. Notice of redemption of Securities to be
redeemed at the election of the Company shall be given by the Company or, at the
Company's request, by the Trustee in the name and at the expense of the Company.

SECTION 1105.  Deposit of Redemption Price.

        On or before [TIME], [CITY, STATE] time, on any Redemption Date, the
Company shall deposit with the Trustee or with a Paying Agent (or, if the
Company is acting as its own Paying Agent, segregate and hold in trust as
provided in Section 1003) an amount of money sufficient to pay the Redemption
Price of, and (except if the Redemption Date shall be an Interest Payment Date)
accrued interest on, and any Additional Amounts with respect to, all the
Securities which are to be redeemed on that date.

SECTION 1106.  Securities Payable on Redemption Date.

        Notice of redemption having been given as aforesaid, the Securities so
to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified, and from and after such date (unless the
Company shall default in the payment of the Redemption Price and accrued
interest) such Securities shall cease to bear interest. Upon surrender of any
such Security for redemption in accordance with said notice, such Security shall
be paid by the Company at the Redemption Price, together with accrued interest
(and any Additional Amounts) to the Redemption Date; provided, however, that
installments of interest whose Stated Maturity is on or prior to the Redemption
Date shall be payable to the Holders of such Securities, or one or more
Predecessor Securities, registered as such at the close of business on the
relevant Record Dates according to their terms and the provisions of Section
307.

        If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security or, in the case of Original Issue Discount Securities,
the Securities' Yield to Maturity.

SECTION 1107.  Securities Redeemed in Part.

        Any Security which is to be redeemed only in part shall be surrendered
at a Place of Payment therefor (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such Security without service
charge, a new Security or Securities of the same series and Stated Maturity, of
any authorized denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Security so surrendered.



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SECTION 1108.  Purchase of Securities.

        Unless otherwise specified as contemplated by Section 301, the Company
and any Affiliate of the Company may at any time purchase or otherwise acquire
Securities in the open market or by private agreement. Such acquisition shall
not operate as or be deemed for any purpose to be a redemption of the
indebtedness represented by such Securities. Any Securities purchased or
acquired by the Company may be delivered to the Trustee and, upon such delivery,
the indebtedness represented thereby shall be deemed to be satisfied. Section
309 shall apply to all Securities so delivered.

                                 ARTICLE TWELVE

                                  SINKING FUNDS

SECTION 1201.  Applicability of Article.

        The provisions of this Article shall be applicable to any sinking fund
for the retirement of Securities of a series except as otherwise specified as
contemplated by Section 301 for Securities of such series.

                  The minimum amount of any sinking fund payment provided for by
the terms of Securities of any series is herein referred to as a "mandatory
sinking fund payment", and any payment in excess of such minimum amount provided
for by the terms of Securities of any series is herein referred to as an
"optional sinking fund payment". Unless otherwise provided by the terms of
Securities of any series, the cash amount of any sinking fund payment may be
subject to reduction as provided in Section 1202. Each sinking fund payment
shall be applied to the redemption of Securities of any series as provided for
by the terms of Securities of such series.

SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities.

        The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption), and (2) may apply as a credit
Securities of a series which have been redeemed either at the election of the
Company pursuant to the terms of such Securities or through the application of
permitted optional sinking fund payments pursuant to the terms of such
Securities, in each case in satisfaction of all or any part of any sinking fund
payment with respect to the Securities of such series required to be made
pursuant to the terms of such Securities as provided for by the terms of such
series; provided that such Securities have not been previously so credited. Such
Securities shall be received and credited for such purpose by the Trustee at the
Redemption Price specified in such Securities for redemption through operation
of the sinking fund and the amount of such sinking payment shall be reduced
accordingly.

SECTION 1203.  Redemption of Securities for Sinking Fund.

        Not less than 45 days prior (unless a shorter period shall be
satisfactory to the Trustee) to each sinking fund payment date for any series of
Securities, the Company will deliver


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to the Trustee an Officers' Certificate specifying the amount of the next
ensuing sinking fund payment for that series pursuant to the terms of that
series, the portion thereof, if any, which is to be satisfied by payment of cash
and the portion thereof, if any, which is to be satisfied by delivery of or by
crediting Securities of that series pursuant to Section 1202 and will also
deliver to the Trustee any Securities to be so delivered. Not less than 30 days
before each such sinking fund payment date the Trustee shall select the
Securities to be redeemed upon such sinking fund payment date in the manner
specified in Section 1103 and cause notice of the redemption thereof to be given
in the name of and at the expense of the Company in the manner provided in
Section 1104. Such notice having been duly given, the redemption of such
Securities shall be made upon the terms and in the manner stated in Sections
1106 and 1107.

                                ARTICLE THIRTEEN

                                  SUBORDINATION

SECTION 1301.  Securities Subordinated to Senior Indebtedness.

        The Company and each Holder of a Security, by his acceptance thereof,
agree that (a) the payment of the principal of, premium (if any) and interest on
and any Additional Amounts with respect to each and all the Securities and (b)
any other payment in respect of the Securities, including on account of the
acquisition or redemption of Securities by the Company, is subordinated, to the
extent and in the manner provided in this Article Thirteen, to the prior payment
in full of all Senior Indebtedness of the Company, whether outstanding at the
date of this Indenture or thereafter created, incurred, assumed or guaranteed,
and that these subordination provisions are for the benefit of the holders of
Senior Indebtedness.

        This Article Thirteen shall constitute a continuing offer to all Persons
who, in reliance upon such provisions, become holders of, or continue to hold,
Senior Indebtedness, and such provisions are made for the benefit of the holders
of Senior Indebtedness, and such holders are made obligees hereunder and any one
or more of them may enforce such provisions.

SECTION 1302.  No Payment on Securities in Certain Circumstances.

        (a) No payment shall be made by or on behalf of the Company on account
of the principal of, premium (if any) or interest on or any Additional Amounts
with respect to the Securities of any series or to acquire any of such
Securities (including any repurchases of such Securities pursuant to the
provisions hereof or thereof at the option of the Holder of such Securities) for
cash or property (other than Junior securities of the Company), or on account of
any redemption provisions of such Securities, in the event of default in payment
of any principal of, premium (if any) or interest on any Senior Indebtedness of
the Company when the same becomes due and payable, whether at maturity or at a
date fixed for prepayment or by declaration or otherwise (a "Payment Default"),
unless and until such Payment Default has been cured or waived or otherwise has
ceased to exist.



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        (b) No payment shall be made by or on behalf of the Company on account
of the principal of, premium (if any) or interest on or any Additional Amounts
with respect to the Securities of any series or to acquire any of such
Securities (including any repurchases of such Securities pursuant to the
provisions hereof or thereof at the option of the Holder of such Securities) for
cash or property (other than Junior securities of the Company), or on account of
any redemption provisions of such Securities, in the event of any event of
default (other than a Payment Default) with respect to any Designated Senior
Indebtedness permitting the holders of such Designated Senior Indebtedness (or a
trustee or other representative on behalf of the holders thereof) to declare
such Designated Senior Indebtedness due and payable prior to the date on which
it would otherwise have become due and payable, upon written notice thereof to
the Company and the Trustee by any holders of Designated Senior Indebtedness (or
a trustee or other representative on behalf of the holders thereof) (the
"Payment Notice"), unless and until such event of default shall have been cured
or waived or otherwise has ceased to exist; provided, that such payments may not
be prevented pursuant to this Section 1302(b) for more than 179 days after an
applicable Payment Notice has been received by the Trustee unless the Designated
Senior Indebtedness in respect of which such event of default exists has been
declared due and payable in its entirety, in which case no such payment may be
made until such acceleration has been rescinded or annulled or such Designated
Senior Indebtedness has been paid in full. No event of default that existed or
was continuing on the date of any Payment Notice (whether or not such event of
default is on the same issue of Designated Senior Indebtedness) may be made the
basis for the giving of a second Payment Notice, and only one such Payment
Notice may be given in any 365-day period.

        (c) In furtherance of the provisions of Section 1301, in the event that,
notwithstanding the foregoing provisions of this Section 1302, any payment or
distribution of assets of the Company (other than Junior securities of the
Company) shall be received by the Trustee or the Holders of Securities of any
series at a time when such payment or distribution was prohibited by the
provisions of this Section 1302, then, unless such payment or distribution is no
longer prohibited by this Section 1302, such payment or distribution (subject to
the provisions of Section 1307) shall be received and held in trust by the
Trustee or such Holder or Paying Agent for the benefit of the holders of Senior
Indebtedness of the Company, and shall be paid or delivered by the Trustee or
such Holders or such Paying Agent, as the case may be, to the holders of Senior
Indebtedness of the Company remaining unpaid or unprovided for or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing such Senior Indebtedness
of the Company may have been issued, ratably, according to the aggregate amounts
remaining unpaid on account of such Senior Indebtedness of the Company held or
represented by each, for application to the payment of all Senior Indebtedness
in full after giving effect to all concurrent payments and distributions to or
for the holders of such Senior Indebtedness.

SECTION 1303.  Securities Subordinated to Prior Payment of All Senior 
               Indebtedness on Dissolution, Liquidation or Reorganization.

        Upon any distribution of assets of the Company or upon any dissolution,
winding up, total or partial liquidation or reorganization of the Company,
whether voluntary or involuntary, in


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bankruptcy, insolvency, receivership or similar proceeding or upon assignment
for the benefit of creditors:

        (a) the holders of all Senior Indebtedness of the Company shall first be
    entitled to receive payments in full before the Holders of Securities of any
    series are entitled to receive any payment on account of the principal of,
    premium (if any) or interest on or any Additional Amounts with respect to
    such Securities (other than Junior securities of the Company);

        (b) any payment or distribution of assets of the Company of any kind or
    character, whether in cash, property or securities (other than Junior
    securities of the Company), to which the Holders of Securities of any series
    or the Trustee on behalf of such Holders would be entitled, except for the
    provisions of this Article Thirteen, shall be paid by the liquidating
    trustee or agent or other Person making such a payment or distribution
    directly to the holders of such Senior Indebtedness or their representative,
    ratably according to the respective amounts of Senior Indebtedness held or
    represented by each, to the extent necessary to make payment in full of all
    such Senior Indebtedness remaining unpaid after giving effect to all
    concurrent payments and distributions to the holders of such Senior
    Indebtedness; and

        (c) in the event that, notwithstanding the foregoing, any payment or
    distribution of assets of the Company of any kind or character, whether in
    cash, property or securities (other than Junior securities of the Company),
    shall be received by the Trustee or the Holders of Securities of any series
    or any Paying Agent (or, if the Company or any Affiliate of the Company is
    acting as its own Paying Agent, money for any such payment or distribution
    shall be segregated or held in trust) on account of the principal of,
    premium (if any) or interest on or any Additional Amounts with respect to
    the Securities of such series before all Senior Indebtedness of the Company
    is paid in full, such payment or distribution (subject to the provisions of
    Section 1307) shall be received and held in trust by the Trustee or such
    Holder or Paying Agent for the benefit of the holders of such Senior
    Indebtedness, or their respective representatives, ratably according to the
    respective amounts of such Senior Indebtedness held or represented by each,
    to the extent necessary to make payment as provided herein of all such
    Senior Indebtedness remaining unpaid after giving effect to all concurrent
    payments and distributions and all provisions therefor to or for the holders
    of such Senior Indebtedness, but only to the extent that as to any holder of
    such Senior Indebtedness, as promptly as practical following notice from the
    Trustee to the holders of such Senior Indebtedness that such prohibited
    payment has been received by the Trustee, Holder(s) or Paying Agent (or has
    been segregated as provided above), such holder (or a representative
    therefor) notifies the Trustee of the amounts then due and owing on such
    Senior Indebtedness, if any, held by such holder and only the amounts
    specified in such notices to the Trustee shall be paid to the holders of
    such Senior Indebtedness.

SECTION 1304.  Subrogation to Rights of Holders of Senior Indebtedness.

        Subject to the payment in full of all Senior Indebtedness of the Company
as provided herein, the Holders of the Securities shall be subrogated (to the
extent of the payments or distributions made to the holders of such Senior
Indebtedness pursuant to the provisions of this


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Article) to the rights of the holders of such Senior Indebtedness to receive
payments or distributions of assets of the Company applicable to the Senior
Indebtedness until all amounts owing on the Securities shall be paid in full.
For the purpose of such subrogation, no such payments or distributions to the
holders of such Senior Indebtedness by the Company, or by or on behalf of the
Holders of the Securities by virtue of this Article Thirteen, which otherwise
would have been made to such Holders shall, as between the Company and such
Holders, be deemed to be payment by the Company or on account of such Senior
Indebtedness, it being understood that the provisions of this Article Thirteen
are and are intended solely for the purpose of defining the relative rights of
the Holders of the Securities, on the one hand, and the holders of such Senior
Indebtedness, on the other hand.

        If any payment or distribution to which the Holders of the Securities
would otherwise have been entitled but for the provisions of this Article
Thirteen shall have been applied, pursuant to the provisions of this Article
Thirteen, to the payment of amounts payable under Senior Indebtedness of the
Company, then such Holders shall be entitled to receive from the holders of such
Senior Indebtedness any payments or distributions received by such holders of
Senior Indebtedness in excess of the amount sufficient to pay all amounts
payable under or in respect of such Senior Indebtedness in full.

SECTION 1305.  Obligations of the Company Unconditional.

        Nothing contained in this Article Thirteen or elsewhere in this
Indenture or in the Securities is intended to or shall impair, as between the
Company and the Holders of the Securities of any series, the obligation of the
Company, which is absolute and unconditional, to pay to such Holders the
principal of, premium (if any) and interest on and any Additional Amounts with
respect to the Securities of such series as and when the same shall become due
and payable in accordance with their terms, or is intended to or shall affect
the relative rights of such Holders and creditors of the Company other than the
holders of the Senior Indebtedness, nor shall anything herein or therein prevent
the Trustee or any Holder from exercising all remedies otherwise permitted by
applicable law upon default under this Indenture, subject to the rights, if any,
under this Article Thirteen, of the holders of Senior Indebtedness in respect of
cash, property or securities of the Company received upon the exercise of any
such remedy. Notwithstanding anything to the contrary in this Article Thirteen
or elsewhere in this Indenture or in the Securities, upon any distribution of
assets of the Company referred to in this Article Thirteen, the Trustee, subject
to the provisions of Sections 601 and 603, and the Holders of the Securities
shall be entitled to rely upon any order or decree made by any court of
competent jurisdiction in which such dissolution, winding up, liquidation or
reorganization proceedings are pending, or a certificate of the liquidating
trustee or agent or other Person making any distribution to the Trustee or to
such Holders for the purpose of ascertaining the Persons entitled to participate
in such distribution, the holders of the Senior Indebtedness and other
Indebtedness of the Company, the amount thereof or payable thereon, the amount
or amounts paid or distributed thereon and all other facts pertinent thereto or
to this Article Thirteen so long as such court has been apprised of the
provisions of, or the order, decree or certificate makes reference to, the
provisions of this Article Thirteen.


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SECTION 1306.  Trustee Entitled to Assume Payments Not Prohibited in Absence of
               Notice.

        The Trustee shall not at any time be charged with knowledge of the
existence of any facts that would prohibit the making of any payment to or by
the Trustee unless and until a Responsible Officer of the Trustee or any Paying
Agent shall have received, no later than two Business Days prior to such
payment, written notice thereof from the Company or from one or more holders of
Senior Indebtedness or from any representative therefor and, prior to the
receipt of any such written notice, the Trustee, subject to the provisions of
Sections 601 and 603, shall be entitled in all respects conclusively to assume
that no such fact exists.

SECTION 1307.  Application by Trustee of Amounts Deposited with It.

        Amounts deposited in trust with the Trustee pursuant to and in
accordance with Article Four shall be for the sole benefit of Holders of the
Securities of series for the benefit of which such amounts were deposited, and,
to the extent allocated for the payment of Securities of such series, shall not
be subject to the subordination provisions of this Article Thirteen. Otherwise,
any deposit of assets with the Trustee or the Paying Agent (whether or not in
trust) for the payment of principal of, premium (if any) or interest on or any
Additional Amounts with respect to any Securities shall be subject to the
provisions of Sections 1301, 1302, 1303 and 1304; provided that if prior to two
Business Days preceding the date on which by the terms of this Indenture any
such assets may become distributable for any purpose (including without
limitation, the payment of either principal of, premium (if any) or interest on
or any Additional Amounts with respect to any Security), the Trustee or such
Paying Agent shall not have received with respect to such assets the written
notice provided for in Section 1306, then the Trustee or such Paying Agent shall
have full power and authority to receive such assets and to apply the same to
the purpose for which they were received, and shall not be affected by any
notice to the contrary that may be received by it on or after such date; and
provided further that nothing contained in this Article Thirteen shall prevent
the Company from making, or the Trustee from receiving or applying, any payment
in connection with the redemption of Securities if the first publication of
notice of such redemption (whether by mail or otherwise in accordance with this
Indenture) has been made, and the Trustee has received such payment from the
Company, prior to the occurrence of any of the contingencies specified in
Section 1302 or 1303.

SECTION 1308.  Subordination Rights Not Impaired by Acts or Omissions of the 
               Company or Holders of Senior Indebtedness.

        No right of any present or future holders of any Senior Indebtedness to
enforce subordination provisions contained in this Article Thirteen shall at any
time in any way be prejudiced or impaired by any act or failure to act on the
part of the Company or by any act or failure to act, in good faith, by any such
holder, or by any noncompliance by the Company with the terms of this Indenture,
regardless of any knowledge thereof that any such holder may have or be
otherwise charged with. The holders of Senior Indebtedness may extend, renew,
modify or amend the terms of the Senior Indebtedness or any security therefor
and release, sell or exchange such security and


                                       65

<PAGE>   74



otherwise deal freely with the Company, all without affecting the liabilities
and obligations of the parties to this Indenture or the Holders of the
Securities.

SECTION 1309.  Trustee to Effectuate Subordination of Securities.

        Each Holder of a Security by his acceptance thereof authorizes and
expressly directs the Trustee on his behalf to take such action as may be
necessary or appropriate to effectuate the subordination provisions contained in
this Article Thirteen and to protect the rights of the Holders of the Securities
pursuant to this Indenture, and appoints the Trustee his attorney-in-fact for
such purpose, including, in the event of any dissolution, winding up,
liquidation or reorganization of the Company (whether in bankruptcy, insolvency
or receivership proceedings or upon an assignment for the benefit of creditors
of the Company), the filing of a claim for the unpaid balance of his Securities
in the form required in said proceedings and cause said claim to be approved. If
the Trustee does not file a proper claim or proof of debt in the form required
in such proceeding prior to 30 days before the expiration of the time to file
such claim or claims, then the holders of the Senior Indebtedness or their
representative is hereby authorized to have the right to file and is hereby
authorized to file an appropriate claim for and on behalf of the Holders of said
Securities. Nothing herein contained shall be deemed to authorize the Trustee or
the holders of Senior Indebtedness or their representative to authorize or
consent to or accept or adopt on behalf of any Holder of Securities any plan of
reorganization, arrangement, adjustment or composition affecting the Securities
or the rights of any Holder thereof, or to authorize the Trustee or the holders
of Senior Indebtedness or their representative to vote in respect of the claim
of any Holder of the Securities in any such proceeding.

SECTION 1310.  Right of Trustee to Hold Senior Indebtedness.

        The Trustee in its individual capacity shall be entitled to all of the
rights set forth in this Article Thirteen in respect of any Senior Indebtedness
at any time held by it to the same extent as any other holder of Senior
Indebtedness, and nothing in this Indenture shall be construed to deprive the
Trustee of any of its rights as such holder.

SECTION 1311.  Article Thirteen Not to Prevent Events of Default.

        The failure to make a payment on account of principal of or premium (if
any) or interest on the Securities by reason of any provision of this Article
Thirteen shall not be construed as preventing the occurrence of a Default or an
Event of Default under Section 501 or in any way prevent the Holders of the
Securities from exercising any right hereunder other than the right to receive
payment on the Securities.

SECTION 1312.  No Fiduciary Duty of Trustee to Holders of Senior Indebtedness.

        The Trustee shall not be deemed to owe any fiduciary duty to the holders
of Senior Indebtedness, and shall not be liable to any such holders (other than
for its willful misconduct or negligence) if it shall in good faith mistakenly
pay over or distribute to the Holders of the Securities or the Company or any
other Person, cash, property or securities to which any holders of Senior


                                       66

<PAGE>   75



Indebtedness shall be entitled by virtue of this Article Thirteen or otherwise.
Nothing in this Section 1312 shall affect the obligation of any other such
Person to hold such payment for the benefit of, and to pay such payment over to,
the holders of Senior Indebtedness or their representative.

SECTION 1313.  Article Applicable to Paying Agent.

        In case at any time any Payment Agent other than the Trustee shall have
been appointed by the Company and be then acting hereunder, the term "Trustee"
as used in this Article Thirteen shall in such case (unless the context shall
otherwise require) be construed as extending to and including such Payment Agent
within its meaning as fully for all intents and purposes as if such Paying Agent
were named in this Article in addition to or in place of the Trustee; provided,
however, that this Section 1313 shall not apply to the Company or any Affiliate
of the Company if it or such Affiliate acts as Paying Agent.


                                ARTICLE FOURTEEN

                        MEETINGS OF HOLDERS OF SECURITIES

SECTION 1401.  Purposes for Which Meetings May Be Called.

        A meeting of Holders of Securities of any or all series may be called at
any time and from time to time pursuant to this Article to make, give or take
any request, demand, authorization, direction, notice, consent, waiver or other
action provided by this Indenture to be made, given or taken by Holders of
Securities of such series.

SECTION 1402.  Call, Notice and Place of Meetings.

        (a) The Trustee may at any time call a meeting of Holders of Securities
of any series for any purpose specified in Section 1401, to be held at such time
and at such place in [CITY, STATE], or in any other location, as the Trustee
shall determine. Notice of every meeting of Holders of Securities of any series,
setting forth the time and the place of such meeting and in general terms the
action proposed to be taken at such meeting, shall be given, in the manner
provided in Section 107, not less than 20 nor more than 180 days prior to the
date fixed for the meeting.

        (b) In case at any time the Company, pursuant to a Board Resolution, or
the Holders of at least 10% in aggregate principal amount of the Outstanding
Securities of any series, shall have requested the Trustee for any such series
to call a meeting of the Holders of Securities of such series for any purpose
specified in Section 1401, by written request setting forth in reasonable detail
the action proposed to be taken at the meeting, and the Trustee shall not have
made the first publication of the notice of such meeting within 30 days after
receipt of such request or shall not thereafter proceed to cause the meeting to
be held as provided herein, then the Company or the Holders of Securities of
such series in the amount above specified, as the case may be, may determine the
time and the place in [CITY, STATE], for such meeting and may call such meeting
for such purposes by giving notice thereof as provided in Subsection (a) of this
Section.


                                       67

<PAGE>   76



SECTION 1403.  Persons Entitled to Vote at Meetings.

        To be entitled to vote at any meeting of Holders of Securities of any
series, a Person shall be (1) a Holder of one or more Outstanding Securities of
such series, or (2) a Person appointed by an instrument in writing as proxy for
a Holder or Holders of one or more Outstanding Securities of such series by such
Holder or Holders. The only Persons who shall be entitled to be present or to
speak at any meeting of Holders of Securities of any series shall be the Persons
entitled to vote at such meeting and their counsel, any representatives of the
Trustee and its counsel and any representatives of the Company and its counsel.

SECTION 1404.  Quorum; Action.

        The Persons entitled to vote a majority in aggregate principal amount of
the Outstanding Securities of a series shall constitute a quorum for a meeting
of Holders of Securities of such series. In the absence of a quorum within 30
minutes of the time appointed for any such meeting, the meeting shall, if
convened at the request of Holders of Securities of such series, be dissolved.
In any other case, the meeting may be adjourned for a period of not less than 10
days as determined by the chairman of the meeting prior to the adjournment of
such meeting. In the absence of a quorum at any such adjourned meeting, such
adjourned meeting may be further adjourned for a period of not less than 10 days
as determined by the chairman of the meeting prior to the adjournment of such
adjourned meeting. Subject to Section 1405(d), notice of the reconvening of any
adjourned meeting shall be given as provided in Section 1402(a), except that
such notice need be given only once not less than five days prior to the date on
which the meeting is scheduled to be reconvened. Notice of the reconvening of an
adjourned meeting shall state expressly that Persons entitled to vote a majority
in principal amount of the Outstanding Securities of such series shall
constitute a quorum.

        Except as limited by the proviso to Section 902, any resolution
presented to a meeting or adjourned meeting duly reconvened at which a quorum is
present as aforesaid may be adopted by the affirmative vote of the Holders of a
majority in aggregate principal amount of the Outstanding Securities of that
series; provided, however, that, except as limited by the proviso to Section
902, any resolution with respect to any request, demand, authorization,
direction, notice, consent or waiver which this Indenture expressly provides may
be made, given or taken by the Holders of a specified percentage that is less
than a majority in aggregate principal amount of the Outstanding Securities of a
series may be adopted at a meeting or an adjourned meeting duly reconvened and
at which a quorum is present as aforesaid by the affirmative vote of the Holders
of such specified percentage in aggregate principal amount of the Outstanding
Securities of that series.

        Except as limited by the proviso to Section 902, any resolution passed
or decision taken at any meeting of Holders of Securities of any series duly
held in accordance with this Section shall be binding on all the Holders of
Securities of such series, whether or not present or represented at the meeting.



                                       68

<PAGE>   77



SECTION 1405.  Determination of Voting Rights; Conduct and Adjournment of
               Meetings.

        (a) The holding of Securities shall be proved in the manner specified in
    Section 105 and the appointment of any proxy shall be proved in the manner
    specified in Section 105. Such regulations may provide that written
    instruments appointing proxies, regular on their face, may be presumed valid
    and genuine without the proof specified in Section 105 or other proof.

        (b) The Trustee shall, by an instrument in writing, appoint a temporary
    chairman of the meeting, unless the meeting shall have been called by the
    Company or by Holders of Securities as provided in Section 1402(b), in which
    case the Company or the Holders of Securities of the series calling the
    meeting, as the case may be, shall appoint a temporary chairman. A permanent
    chairman and a permanent secretary of the meeting shall be elected by vote
    of the Persons entitled to vote a majority in aggregate principal amount of
    the Outstanding Securities of such series represented at the meeting.

        (c) At any meeting each Holder of a Security of such series and each
    proxy shall be entitled to one vote for each $1,000 principal amount of the
    Outstanding Securities of such series held or represented by him; provided,
    however, that no vote shall be cast or counted at any meeting in respect of
    any Security challenged as not Outstanding and ruled by the chairman of the
    meeting to be not Outstanding. The chairman of the meeting shall have no
    right to vote, except as a Holder of a Security of such series or as a
    proxy.

        (d) Any meeting of Holders of Securities of any series duly called
    pursuant to Section 1402 at which a quorum is present may be adjourned from
    time to time by Persons entitled to vote a majority in aggregate principal
    amount of the Outstanding Securities of such series represented at the
    meeting; and the meeting may be held as so adjourned without further notice.

SECTION 1406.  Counting Votes and Recording Action of Meetings.

        The vote upon any resolution submitted to any meeting of Holders of
Securities of any series shall be by written ballots on which shall be
subscribed the signatures of the Holders of Securities of such series or of
their representatives by proxy and the principal amounts and serial numbers of
the Outstanding Securities of such series held or represented by them. The
permanent chairman of the meeting shall appoint two inspectors of votes who
shall count all votes cast at the meeting for or against any resolution and who
shall make and file with the secretary of the meeting their verified written
reports in duplicate of all votes cast at the meeting. A record, at least in
duplicate, of the proceedings of each meeting of Holders of Securities of any
series shall be prepared by the secretary of the meeting and there shall be
attached to such record the original reports of the inspectors of votes on any
vote by ballot taken thereat and affidavits by one or more persons having
knowledge of the facts setting forth a copy of the notice of the meeting and
showing that such notice was given as provided in Section 1402 and, if
applicable, Section 1404. Each copy shall be signed and verified by the
affidavits of the permanent chairman and secretary of the meeting and one such
copy shall be delivered to the Company, and another to the Trustee to be
preserved by the Trustee,


                                       69

<PAGE>   78


the latter to have attached thereto the ballots voted at the meeting. Any record
so signed and verified shall be conclusive evidence of the matters therein
stated.

                              *     *      *

        This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

        IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed as of the day and year first above written.



                                      KEY ENERGY GROUP, INC.


                                      By
                                        ------------------------------
                                          Name:
                                          Title:



                                      [TRUSTEE], Trustee



                                      By
                                        ------------------------------
                                          Name:
                                          Title:


                                       70


<PAGE>   1
                                                                     EXHIBIT 5.1





                               November 19, 1998


Securities and Exchange Commission
450 Fifth Street
Judiciary Plaza
Washington D.C. 20549

         Re:    Key Energy Group, Inc. -- Registration Statement on Form S-3

Gentlemen:

         We have acted as counsel to Key Energy Group, Inc., a Maryland
corporation (the "Company"), in connection with the registration on Form S-3 of
the Securities Act of 1933, as amended, of up to $500,000,000 aggregate amount
of (i) shares of common stock, par value $.10 per share ("Common Stock"), (ii)
shares of preferred stock, in one or more series, as may be designated by the
Board of Directors of the Company ("Preferred Stock"), (iii) debt securities,
in one or more series, consisting of notes, debentures or other evidences of
indebtedness ("Debt Securities") and (iv) securities warrants ("Securities
Warrants") to purchase Common Stock, Preferred Stock and Debt Securities
(collectively, the "Securities").  In rendering the opinions set forth below,
we have examined the Restated Articles of Incorporation, bylaws and
corporate proceedings of the Company, and have made such other examinations as
we have deemed necessary and, based upon such examination and having regard for
applicable legal principles, it is our opinion that:

                 (i)      the shares of Common Stock and Preferred Stock, when
duly issued and delivered in accordance with the resolutions of the Board of
Directors of the Company of even date herewith ("Enabling Resolutions"), or in
accordance with the terms of any convertible, exchangeable, or exercisable
Securities, will be duly authorized, validly issued, fully paid and
nonassessable shares of Common Stock and Preferred Stock of the Company; and

                 (ii)     the Debt Securities and Securities Warrants, when
duly authenticated, issued and delivered in accordance with the Enabling
Resolutions, or in accordance with the terms of any convertible, exchangeable
or exercisable Securities, will constitute legal, valid and binding obligations
of the Company enforceable in accordance with their terms, except as such
enforcement may be limited by bankruptcy, insolvency, reorganization or similar
laws affecting creditor's rights generally and that the remedies of specific
performance and injunctive and other forms of equitable relief are subject to
certain equitable defenses and to the discretion of the court before which any
proceeding therefor may be brought.
<PAGE>   2
         The foregoing opinions are subject to, and qualified by, the following
additional conditions:

         (a) the due authorization, execution and delivery by the Company, and
by each counterparty thereto, of (x) each applicable indenture (including any
necessary supplemental indenture or additional corporate proceedings), if any,
relating to such of the Securities as are evidences of indebtedness that are
offered and sold (or which may become issuable upon the conversion, exchange or
exercise of any convertible, exchangeable or exercisable Securities) and (y)
each applicable warrant agreement (including any necessary warrant agreement
supplement or additional corporate proceedings), if any, relating to such of
the Securities as are warrants that are offered and sold (or which may become
issuable upon the conversion, exchange or exercise of any convertible,
exchangeable or exercisable Securities),

         (b) with respect to such of the Securities as are Preferred Stock, the
due designation of an applicable series within that class and the due
authorization for issuance of such number of shares of Preferred Stock within
the series that are offered and sold (or the reservation of such shares as may
become issuable upon the conversion, exchange or exercise of any convertible,
exchangeable or exercisable Securities), and

         (c) with respect to such of the Securities as are Common Stock, the
due authorization for issuance of such number of shares of Common Stock that
are offered and sold (or the reservation of such shares as may become issuable
upon the conversion, exchange or exercise of any convertible, exchangeable or
exercisable Securities).

         We hereby consent to the use of our name in the Registration Statement
and the related prospectus wherever contained therein and we also consent to
the filing of this opinion as an exhibit to the Registration Statement.

                                        Very truly yours,

                                        /s/ Porter & Hedges, L.L.P.

                                        Porter & Hedges, L.L.P.





<PAGE>   1
                                                                    EXHIBIT 12.1


                             KEY ENERGY GROUP, INC.

               COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                             (dollars in thousands)
<TABLE>
<CAPTION>
                                                                                                                          Three
                                                                                                                         Months
                                                                            Years Ended June 30,                          Ended
                                                          ---------------------------------------------------------     ---------
                                                           1998          1997         1996       1995         1994       9/30/98
                                                          -------      --------      ------     -------      ------     ---------
          <S>                                             <C>           <C>          <C>         <C>         <C>           <C>
          Earnings  before tax  . . . . . . . . . .       $38,805       $14,675      $5,575      $3,328      $2,295        $3,157

          Interest  . . . . . . . . . . . . . . . .        21,476         7,879       2,477       1,478         830         8,505

          Imputed interest(A) . . . . . . . . . . .         2,673         1,770         968         645         561           875
                                                          -------       -------      ------      ------      ------        ------
          Adjusted earnings . . . . . . . . . . . .        62,954        24,324       9,020       5,451       3,686        12,537
                                                          =======       =======      ======      ======      ======        ======
          Interest and imputed interest . . . . . .        24,149         9,649       3,445       2,123       1,391         9,380
                                                          =======       =======      ======      ======      ======        ======
          Ratio of earnings to fixed charges  . . .          2.61          2.52        2.62        2.57        2.65          1.34
</TABLE>


(A)  Imputed interest is equal to approximately 1/3 of operating lease expenses.






<PAGE>   1
                                                                    Exhibit 23.2


                        CONSENT OF KPMG PEAT MARWICK LLP


The Board of Directors
Key Energy Group, Inc:

We consent to the use of our report on the consolidated financial statements of 
Key Energy Group, Inc., incorporated herein by reference, and to the reference 
to our firm under the heading "Experts" in the Prospectus.


                                         /s/ KPMG PEAT MARWICK LLP
                                         -----------------------------------
                                             KPMG PEAT MARWICK LLP


Midland, Texas
November 20, 1998

<PAGE>   1
                                                                    Exhibit 23.3


                        CONSENT OF KPMG PEAT MARWICK LLP


The Board of Directors
Key Energy Group, Inc:

We consent to the use of our report on the consolidated financial statements of
Dawson Production Services, Inc., incorporated herein by reference, and to the
reference to our firm under the heading "Experts" in the Prospectus.


                                         /s/ KPMG PEAT MARWICK LLP
                                         -----------------------------------
                                             KPMG PEAT MARWICK LLP


San Antonio, Texas
November 20, 1998


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