WMX TECHNOLOGIES INC
S-4, 1994-12-16
REFUSE SYSTEMS
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<PAGE>
 
AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 16, 1994  
 
                                                    REGISTRATION NO. 33-
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                               ----------------
                                   FORM S-4
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                               ----------------
                            WMX TECHNOLOGIES, INC.
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
                               ----------------
               DELAWARE                                 4953
    (STATE OR OTHER JURISDICTION OF         (PRIMARY STANDARD INDUSTRIAL
    INCORPORATION OR ORGANIZATION)           CLASSIFICATION CODE NUMBER)
                                  36-2660763
                     (I.R.S. EMPLOYER IDENTIFICATION NO.)
                             3003 BUTTERFIELD ROAD
                           OAK BROOK, ILLINOIS 60521
                                (708) 572-8800
              (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
       INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                               ----------------
   HERBERT A. GETZ, VICE PRESIDENT,            JOHN T. MCCARTHY, ESQ.
     GENERAL COUNSEL AND SECRETARY               BELL, BOYD & LLOYD
        WMX TECHNOLOGIES, INC.               THREE FIRST NATIONAL PLAZA
         3003 BUTTERFIELD ROAD                 CHICAGO, ILLINOIS 60602
       OAK BROOK, ILLINOIS 60521                   (312) 372-1121
            (708) 572-8800
        (NAMES, ADDRESSES, INCLUDING ZIP CODES, AND TELEPHONE NUMBERS,
                 INCLUDING AREA CODES, OF AGENTS FOR SERVICE)
                               ----------------
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement and upon
approval and adoption of the Merger Agreement as described herein by the
stockholders of Chemical Waste Management, Inc. and satisfaction or waiver of
conditions set forth therein.
  If the securities being registered on this Form are to be offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, check the following box: [_]
                               ----------------
                        CALCULATION OF REGISTRATION FEE
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                     PROPOSED       PROPOSED
          TITLE OF EACH               AMOUNT         MAXIMUM         MAXIMUM       AMOUNT OF
       CLASS OF SECURITIES             TO BE      OFFERING PRICE    AGGREGATE     REGISTRATION
        TO BE REGISTERED            REGISTERED      PER SHARE    OFFERING PRICE       FEE
- -----------------------------------------------------------------------------------------------
<S>                               <C>             <C>            <C>             <C>
Convertible Subordinated Notes
 due 2005........................ $550,000,000(1)    $9.1875(2)  $412,200,642(2) $142,126.78(2)
Common Stock, $1.00 par              2,825,000
 value(3)(4)                          shares            $9.1875   $ 25,954,687    $  8,949.18
- -----------------------------------------------------------------------------------------------
</TABLE>
- -------------------------------------------------------------------------------
(1) Estimated solely for the purposes of calculating the registration fee. The
    actual number of Notes to be issued will vary depending on the number of
    shares of Chemical Waste Management, Inc. common stock outstanding at the
    effective time of the merger referred to herein, the amount of cash paid
    in lieu of the issuance of fractional Notes and the number of shares of
    Chemical Waste Management, Inc. common stock as to which the statutory
    right to appraisal is perfected.
(2) Estimated pursuant to Rule 457(f)(1) solely for the purpose of calculating
    the registration fee and based upon the average of the high and low sale
    prices of Chemical Waste Management, Inc. common stock reported on the New
    York Stock Exchange Composite Tape on December 13, 1994. Of this total
    indicated registration fee, the sum of $84,684.15 was paid in connection
    with the November 4, 1994 filing by Chemical Waste Management, Inc. of its
    Preliminary Proxy Statement relating to the merger described herein and is
    applied to reduce the total indicated registration fee pursuant to Rule
    457(b) under the Securities Act of 1933, as amended.  
(3) The number of shares of WMX Technologies, Inc. common stock listed above
    is being registered for issuance in accordance with the terms of the
    Merger Agreement hereinafter described upon exercise of options granted
    under Chemical Waste Management, Inc. Stock Option Plans. Also being
    registered are such indeterminate number of shares of WMX Technologies,
    Inc., common stock as may be issuable upon conversion of the Notes being
    registered.
(4) This Registration Statement also covers an indeterminate number of Series
    A Preferred Stock Purchase Rights, which are currently transferable with
    and only with the shares of common stock registered hereby.
                               ----------------
  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.
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                             WMX TECHNOLOGIES, INC.
 
                             CROSS REFERENCE SHEET
 
                   PURSUANT TO ITEM 501(B) OF REGULATION S-K
 
<TABLE>
<CAPTION>
                                               LOCATION IN OR CAPTION IN
          ITEM IN FORM S-4                    PROXY STATEMENT--PROSPECTUS
          ----------------                    ---------------------------
<S>                                   <C>
 1. Forepart of the Registration
    Statement and Outside Front
    Cover Page of Prospectus........  Cover Page of Proxy Statement--Prospectus
 2. Inside Front and Outside Back
    Cover Pages of Prospectus.......  Available Information; Table of Contents
 3. Risk Factors, Ratio of Earnings
    to Fixed Charges and Other
    Information.....................  Summary; Risk Factors
 4. Terms of the Transaction........  Summary; Special Factors; The Merger
                                       Agreement; Description of Notes; Certain
                                       Tax Considerations; Comparison of
                                       Stockholders' Rights
 5. Pro Forma Financial Information.  Summary
 6. Material Contacts with the
    Company Being Acquired..........  Special Factors; Certain Relationships and
                                       Transactions
 7. Additional Information Required
    for Reoffering by Persons and
    Parties Deemed to be
    Underwriters....................  Inapplicable
 8. Interests of Named Experts and
    Counsel.........................  Experts; Legal Matters
 9. Disclosure of Commission
    Position on Indemnification for
    Securities Act Liabilities......  Inapplicable
10. Information with Respect to S-3
    Registrants.....................  Inapplicable
11. Incorporation of Certain
    Information by Reference........  Documents Incorporated by Reference
12. Information with Respect to S-2
    or S-3 Registrants..............  Inapplicable
13. Incorporation of Certain
    Information by Reference........  Inapplicable
14. Information with Respect to
    Registrants Other than S-2 or S-
    3 Registrants...................  Inapplicable
15. Information with Respect to S-3
    Companies.......................  Documents Incorporated by Reference
16. Information with Respect to S-2
    or S-3 Companies................  Inapplicable
17. Information with Respect to
    Companies Other than S-2 or S-3
    Companies.......................  Inapplicable
18. Information if Proxies, Consents
    or Other Authorizations are to    Documents Incorporated by Reference;
    be Solicited....................   Summary; Information Concerning the
                                       Special Meeting; Special Factors; Delaware
                                       Statutory Appraisal Rights; Securities
                                       Ownership; Certain Relationships and
                                       Transactions
19. Information if Proxies, Consents
    or Authorizations are not to be
    Solicited in an Exchange Offer..  Inapplicable
</TABLE>
<PAGE>
 
                 PRELIMINARY COPY DATED DECEMBER 16, 1994  
 
                        CHEMICAL WASTE MANAGEMENT, INC.
 
                                                                            LOGO
                             WMX TECHNOLOGIES, INC.
 
  LOGO                  PROXY STATEMENT-
                           PROSPECTUS
 
  This Proxy Statement-Prospectus is being furnished to the holders of shares
of common stock, par value $.01 per share (the "CWM Shares"), of Chemical Waste
Management, Inc. ("CWM"), a Delaware corporation, in connection with the
solicitation of proxies for use at the Special Meeting of stockholders of CWM
(the "Special Meeting") to be held in the Assembly Room of Harris Trust and
Savings Bank, 111 West Monroe Street, 8th Floor, Chicago, Illinois, at 10:00
a.m., local time, on Friday, January 20, 1995, and at any adjournments or
postponements thereof. This Proxy Statement-Prospectus and the related proxy
card are first being sent to the holders of CWM Shares on or about December   ,
1994. This proxy solicitation is being made by the Board of Directors of CWM.
 
  At the Special Meeting, holders of CWM Shares will be asked to consider and
vote upon approval and adoption of the Agreement and Plan of Merger dated as of
October 14, 1994, as amended (the "Merger Agreement"), by and among CWM, WMX
Technologies, Inc. (the "Company"), a Delaware corporation and the owner of
approximately 78.6% of the issued and outstanding CWM Shares, and WMX Merger
Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary
of the Company. The Merger Agreement provides for the Company's acquisition,
through the merger (the "Merger") of Merger Sub with and into CWM, as described
in this Proxy Statement-Prospectus, of the outstanding CWM Shares not owned by
the Company. Upon consummation of the Merger, CWM will be a wholly owned
subsidiary of the Company and the market trading of CWM Shares will cease.
 
  In the Merger, all publicly held CWM Shares, other than CWM Shares as to
which appraisal rights are perfected under Delaware law ("Dissenting Shares"),
will, by virtue of the Merger and without any action on the part of any
stockholder, be converted into convertible, subordinated notes of the Company
due January 20, 2005 and having a principal amount at maturity of $1,000 per
note (the "Notes"). Notes will be issued in the Merger at the rate of one Note
for every 81.1 CWM Shares, provided that no fractional Notes will be issued,
and instead, cash will be paid in lieu thereof. Accordingly, stockholders who
beneficially own fewer than 82 CWM Shares will not be entitled to receive any
Notes in the Merger, but rather will be paid cash for such CWM Shares on the
basis described elsewhere in this Proxy Statement-Prospectus. See "The Merger
Agreement--Merger Consideration."
 
  The Notes are subordinated to all existing and future Senior Indebtedness of
the Company. Each Note will bear cash interest from and after the date the
Merger is consummated (the "Effective Date") at the rate of 2.00% per annum of
the $1,000 principal amount at maturity of each Note, payable semi-annually on
January 20 and July 20 of each year.
 
  Each Note will be convertible at the option of the holder at any time from
and after the Effective Date into shares of common stock, $1.00 par value per
share, of the Company (the "Company Shares"). The number of Company Shares to
be issued on conversion of a Note will be determined on the Effective Date by
dividing (i) $717.80 (the "Stated Issue Price") by (ii) the average of the per
share closing sale prices for Company Shares as reported on the New York Stock
Exchange (the "NYSE") Composite Tape for the ten trading days immediately
preceding the date of the Special Meeting (the "Company Share Closing Price"),
provided that the number of Company Shares initially issuable on conversion of
a Note shall not be less than 21.90 nor more than 26.76. The Company may, at
its option, in lieu of issuing Company Shares on conversion
 
                                               (Continued on the following page)
 
                                --------------
 
       The date of this Proxy Statement-Prospectus is December   , 1994.
<PAGE>
 
of a Note, elect to pay cash equal to the market value of the Company Shares
otherwise issuable in such conversion.
 
  Each Note will be purchased by the Company at the option of the holder on
March 15, 1998 and March 15, 2000, at prices of $790.24 and $843.35,
respectively, plus accrued but unpaid interest to the
purchase date. The Notes are redeemable at the option of the Company at any
time on or after March 15, 2000 at a redemption price for each Note equal to
the sum of (i) the Stated Issue Price, (ii) the accrued portion of the
difference (the "Stated Discount") between the $1,000 principal amount at
maturity and the Stated Issue Price of each Note and (iii) the accrued but
unpaid interest in respect of such Note to the date of redemption. See
"Description of Notes--Purchase of Notes at the Option of the Holder" and "--
Redemption of the Notes at the Option of the Company."
 
  CWM and the Company have been advised by counsel that gain or loss will be
recognized for federal income tax purposes to each stockholder of CWM whose CWM
Shares are converted into Notes or cash in lieu of a fractional Note in the
Merger or who receives cash in respect of Dissenting Shares. Each Note is
expected to be issued at an original issue discount for United States federal
income tax purposes ("Original Issue Discount"). Original Issue Discount is
expected to differ from the Stated Discount. Holders of CWM Shares should be
aware that, although there will be no periodic payments of interest in respect
of such Original Issue Discount, accrued Original Issue Discount will be
includable periodically in a Holder's gross income for United States federal
income tax purposes prior to conversion, redemption, other disposition or
maturity of such Holder's Notes, whether such Notes are ultimately converted,
redeemed, sold (to the Company or otherwise) or paid at maturity. See "Certain
Tax Considerations."
 
  Pursuant to the Delaware General Corporation Law, as amended (the "DGCL"),
the Merger Agreement must be approved and adopted by the affirmative vote of
the holders of a majority of the outstanding CWM Shares. The Company has agreed
to vote its CWM Shares for approval and adoption of the Merger Agreement.
HOWEVER, AS SPECIFIED IN THE MERGER AGREEMENT, IT IS A CONDITION TO THE
CONSUMMATION OF THE MERGER THAT THE MERGER AGREEMENT ALSO BE APPROVED AND
ADOPTED AT THE SPECIAL MEETING BY THE HOLDERS OF A MAJORITY OF THE CWM SHARES
WHICH ARE REPRESENTED AND ENTITLED TO BE VOTED AT THE SPECIAL MEETING AND NOT
DIRECTLY OR INDIRECTLY OWNED BY THE COMPANY. The Merger is also subject to
other conditions. See "The Merger Agreement--Conditions."
  SEE "RISK FACTORS" HEREIN FOR A DISCUSSION OF CERTAIN MATTERS WHICH, TOGETHER
WITH THE OTHER MATTERS DISCUSSED HEREIN, SHOULD BE CAREFULLY CONSIDERED BY THE
HOLDERS OF CWM SHARES IN CONSIDERING WHETHER OR NOT TO VOTE FOR APPROVAL AND
ADOPTION OF THE MERGER AGREEMENT.  
 
  At the Special Meeting, holders of CWM Shares will also consider any other
business that may properly come before such meeting or any adjournments or
postponements thereof.
 
  This Proxy Statement-Prospectus also constitutes the prospectus of the
Company, filed with the Securities and Exchange Commission (the "Commission")
as part of the Company's Registration Statement on Form S-4 (the "Registration
Statement") under the Securities Act of 1933, as amended (the "Securities
Act"), for the issuance of up to $550,000,000 aggregate principal amount at
maturity of Notes and up to 17,543,000 Company Shares.
 
                                       2
<PAGE>
 
  No person has been authorized to give any information or to make any
representation not contained in this Proxy Statement-Prospectus and, if given
or made, such information or representation must not be relied upon as having
been authorized by the Company or CWM. This Proxy Statement-Prospectus does not
constitute an offer to sell or a solicitation of an offer to buy any securities
in any jurisdiction in which, or to any person to whom, it is unlawful to make
such offer or solicitation. Neither the delivery of this Proxy Statement-
Prospectus nor any offer or sale made hereunder shall, under any circumstances,
create any implication that there has been no change in information set forth
herein or in the affairs of CWM or the Company from the date hereof.
 
                             AVAILABLE INFORMATION
 
  The Company has filed with the Commission a Rule 13e-3 Transaction Statement
on Schedule 13E-3 (including any amendments thereto, the "Schedule 13E-3")
under the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
with respect to the Merger. As permitted by the rules and regulations of the
Commission, this Proxy Statement-Prospectus omits certain information contained
in the Registration Statement or the Schedule 13E-3, including the exhibits
thereto. For further information pertaining to the securities offered hereby,
reference is made to the Registration Statement, including the exhibits filed
as a part thereof or incorporated therein by reference.
 
  CWM and the Company are subject to the informational requirements of the
Exchange Act, and, in accordance therewith, file reports, proxy statements and
other information with the Commission. Such reports, proxy statements, the
Schedule 13E-3 and other information may be inspected and copied at the public
reference facilities maintained by the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549, and at the following Regional Offices of the
Commission: New York Regional Office, Seven World Trade Center, New York, New
York 10048; and Chicago Regional Office, Suite 1400, 500 West Madison Street,
Chicago, Illinois 60661. Copies of such material may be obtained from the
Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549, at prescribed rates. The CWM Shares and the Company
Shares are listed on the NYSE and such material may also be inspected at the
offices of the NYSE, 20 Broad Street, New York, New York 10005.
 
  If the Merger is consummated, the CWM Shares will be delisted from the NYSE,
and the Company will take steps to terminate the registration of the CWM Shares
under the Exchange Act. As a result, CWM will no longer be subject to the
reporting requirements of the Exchange Act.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
  The following documents heretofore filed by the Company under the Exchange
Act with the Commission (the "Company Reports") are incorporated herein by
reference.
 
  (1) The Company's Annual Report on Form 10-K for the fiscal year ended
December 31, 1993.
 
  (2) The Company's Quarterly Reports on Form 10-Q for the quarters ended March
31, June 30, and September 30, 1994.
 
  (3) The Company's Current Reports on Form 8-K dated February 8, July 28 and
October 14, 1994.
 
  (4) The description of Company Shares set forth in the Company's application
on Form 8-A for Registration of Certain Classes of Securities dated April 25,
1972, and Amendments on Form 8 dated May 16, 1980 and November 26, 1985 to such
Application.
 
  (5) The description of the rights to purchase the Company's Series A
Preferred Stock set forth in the Company's Application on Form 8-A for
Registration of Certain Classes of Securities, dated January 26, 1987.
 
                                       3
<PAGE>
 
  The following documents heretofore filed by CWM under the Exchange Act with
the Commission (the "CWM Reports") are incorporated herein by reference.
 
  (1) CWM's Annual Report on Form 10-K for the fiscal year ended December 31,
1993.
 
  (2) CWM's Quarterly Reports on Form 10-Q for the quarters ended March 31,
June 30, and September 30, 1994.
 
  (3) CWM's Current Reports on Form 8-K dated July 28 and October 14, 1994.
 
  (4) The description of CWM Shares set forth in CWM's Application on Form 8-A
for Registration of Certain Classes of Securities dated September 5, 1986.
 
  All documents filed by CWM and the Company pursuant to Section 13(a), 13(c),
14 or 15(d) of the Exchange Act after the date of this Proxy Statement-
Prospectus and prior to the date of the Special Meeting (or any adjournment or
postponement thereof) shall be deemed to be incorporated in this Proxy
Statement-Prospectus by reference and to be a part hereof from the date of
filing of such documents. Any statement contained in a document incorporated or
deemed to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Proxy Statement-Prospectus to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of
this Proxy Statement-Prospectus.
 
  THIS PROXY STATEMENT-PROSPECTUS INCORPORATES BY REFERENCE DOCUMENTS WHICH ARE
NOT PRESENTED HEREIN OR DELIVERED HEREWITH. THESE DOCUMENTS (OTHER THAN
EXHIBITS TO SUCH DOCUMENTS, UNLESS SUCH EXHIBITS ARE SPECIFICALLY INCORPORATED
BY REFERENCE HEREIN) ARE AVAILABLE WITHOUT CHARGE, UPON ORAL OR WRITTEN REQUEST
BY ANY PERSON RECEIVING THIS PROXY STATEMENT-PROSPECTUS, FROM CWM SHAREHOLDER
SERVICES, P.O. BOX 1400, PITTSBURGH, PENNSYLVANIA 15230, TELEPHONE (800) 443-
6474. IN ORDER TO ENSURE TIMELY DELIVERY OF THE DOCUMENTS, ANY REQUEST SHOULD
BE MADE BY JANUARY 12, 1995.
 
                                       4
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                         <C>
SUMMARY....................................................................   7
  The Special Meeting......................................................   7
  The Parties..............................................................   7
  Risk Factors.............................................................   8
  Background; Certain Relationships with Affiliates; Ownership of CWM......   8
  Record Date and Quorum...................................................   9
  Vote Required; Certain CWM Shares Voting in Favor of the Merger..........   9
  Terms of the Merger; Description of Notes................................   9
  Exchange and Payment Procedures..........................................  12
  Background of the Merger.................................................  12
  Recommendation of the Special Committee and the CWM Board of Directors...  12
  Opinion of CWM's Financial Advisor.......................................  13
  Conflicts of Interest....................................................  13
  Accounting Treatment.....................................................  13
  Certain Tax Considerations...............................................  13
  Litigation Regarding the Merger..........................................  14
  Regulatory Requirements..................................................  14
  Market Prices of CWM and Company Shares..................................  14
  Treatment of Stock Options and Liquid Yield Option(TM) Notes.............  14
  Delaware Statutory Appraisal Rights......................................  15
  Comparison of Rights of Holders of CWM Shares and Company Shares.........  15
  Selected Financial Data..................................................  16
  Comparative Historical and Pro Forma Per Share Data......................  18
  Recent Development.......................................................  18
RISK FACTORS...............................................................  19
  No Prior Market for Notes; Adverse Impact of Profit Sharing Plan Sales...  19
  Increased Indebtedness...................................................  19
  Original Issue Discount..................................................  19
  Certain Relationships and Transactions; Possible Conflicts of Interest...  19
  Exposure to Environmental and Other Risks................................  20
  Intense Competition in the Company's Markets.............................  20
INFORMATION CONCERNING THE SPECIAL MEETING.................................  21
  The Special Meeting......................................................  21
  Record Date; Quorum; Outstanding CWM Shares Entitled to Vote.............  21
  Vote Required; Certain CWM Shares Voting in Favor of the Merger..........  21
  Action to Be Taken Under the Proxy.......................................  22
  Accounting Treatment.....................................................  22
  Proxy Solicitation.......................................................  22
SPECIAL FACTORS............................................................  22
  Certain Consequences of the Merger.......................................  22
  Conflicts of Interest....................................................  23
  Background of the Merger.................................................  23
  Recommendation of the Special Committee and the Board of Directors of
   CWM;
   Fairness of the Merger..................................................  29
  Opinion of CWM's Financial Advisor.......................................  32
  Plans for CWM After the Merger...........................................  37
  Litigation Regarding the Merger..........................................  37
  Fees and Expenses and Source of Funds....................................  38
  Regulatory Requirements..................................................  38
THE MERGER AGREEMENT.......................................................  38
  Merger Consideration.....................................................  38
  Exchange and Payment Procedures..........................................  39
  Transfer of CWM Shares...................................................  40
  Treatment of Stock Options...............................................  40
  Treatment of LYONs.......................................................  40
  Covenants................................................................  41
  Conditions...............................................................  41
  Termination; Amendments..................................................  42
  Listing..................................................................  43
</TABLE>
 
                                       5
<PAGE>
 
<TABLE>
<S>                                                                          <C>
DELAWARE STATUTORY APPRAISAL RIGHTS........................................   43
CERTAIN PRELIMINARY 1994 AND 1995 STRATEGIC PLANNING INFORMATION OF CWM....   46
CWM SHARE AND COMPANY SHARE MARKET PRICE INFORMATION; DIVIDEND INFORMATION;
 AND CWM SHARE PURCHASE INFORMATION........................................   48
CAPITALIZATION.............................................................   49
DESCRIPTION OF NOTES.......................................................   49
  General..................................................................   50
  Subordination of Notes; Effect of Corporate Structure....................   50
  Conversion Rights........................................................   52
  Redemption of Notes at the Option of the Company.........................   53
  Purchase of Notes at the Option of the Holder............................   54
  Change in Control Permits Purchase of Notes at the Option of the Holder..   55
  Mergers and Sales of Assets by the Company...............................   57
  Events of Default; Notice and Waiver.....................................   57
  Modification.............................................................   58
  Limitations of Claims in Bankruptcy......................................   59
  Taxation of Notes........................................................   59
  Information Concerning the Trustee.......................................   59
CERTAIN TAX CONSIDERATIONS.................................................   59
  Receipt of Notes and Cash................................................   59
  Original Issue Discount and Other Interest...............................   60
  Disposition or Conversion................................................   61
  Constructive Dividend....................................................   62
  Backup Withholding.......................................................   62
BUSINESS OF THE COMPANY....................................................   62
BUSINESS OF CWM............................................................   63
CERTAIN RELATIONSHIPS AND TRANSACTIONS.....................................   64
  International Transactions...............................................   64
  Organization of Rust.....................................................   66
  Cash Management, Financing and Related Arrangements......................   67
  Management, Technical and Other Services.................................   68
  Rust Shareholders' Agreement.............................................   68
  Other Transactions.......................................................   69
SECURITIES OWNERSHIP.......................................................   70
  Ownership of Company Shares..............................................   70
  Ownership of CWM Shares..................................................   73
  Ownership of WTI Common Stock by Company Directors and Executive
   Officers................................................................   75
  Ownership of Rust Common Stock...........................................   76
  Ownership of Waste Management International Ordinary Shares by Company
   Directors and Executive Officers........................................   78
COMPARISON OF STOCKHOLDERS' RIGHTS.........................................   79
  General..................................................................   79
  Authorized Capital.......................................................   79
  Classified Board of Directors............................................   79
  Number of Directors; Removal; Filling Vacancies..........................   79
  No Company Stockholder Action by Written Consent; Special Meetings.......   80
  Advance Notice Provisions for Stockholder Proposals and Stockholder
   Nominations of Directors................................................   80
  Transactions with Interested Stockholders................................   81
  Amendment of Certain Provisions of the Certificates......................   82
  Company Rights...........................................................   82
  General Anti-Takeover Effects............................................   83
  Liability and Indemnification of Officers and Directors..................   84
EXPERTS....................................................................   84
LEGAL MATTERS..............................................................   85
PROPOSALS BY CWM STOCKHOLDERS..............................................   85
INCORPORATION OF SUBSEQUENTLY FILED DOCUMENTS..............................   85
APPENDIX A--AGREEMENT AND PLAN OF MERGER
APPENDIX B--OPINION OF CS FIRST BOSTON CORPORATION
APPENDIX C--SECTION 262 OF THE DELAWARE GENERAL CORPORATION LAW
</TABLE>
 
                                       6
<PAGE>
 
                                    SUMMARY
 
  The following is a summary of certain of the information contained elsewhere
in this Proxy Statement-Prospectus. This summary does not purport to be and is
not intended to be complete and is qualified in its entirety by reference to
the more detailed information appearing elsewhere in this Proxy Statement-
Prospectus, the Appendices hereto and the other documents referred to and
incorporated by reference herein. The stockholders of CWM are urged to read and
review carefully the entire Proxy Statement-Prospectus, including the
Appendices hereto and the other documents referred to and incorporated by
reference herein. Capitalized terms used but not defined in this summary have
the meanings ascribed to them elsewhere in this Proxy Statement-Prospectus.
 
THE SPECIAL MEETING
 
  This Proxy Statement-Prospectus and the attached letter, notice and any other
documents included herewith are being furnished to the stockholders of CWM in
connection with the solicitation of proxies by the Board of Directors of CWM
for use at the Special Meeting to be held at 10:00 a.m., local time, on Friday,
January 20, 1995, in the Assembly Room of Harris Trust and Savings Bank, 111
West Monroe Street, 8th Floor, Chicago, Illinois, and at any and all
adjournments or postponements thereof. At the Special Meeting, the holders of
CWM Shares will be asked to consider and vote upon approval and adoption of the
Merger Agreement and to transact such other business as may properly come
before the meeting.
 
THE PARTIES
 
 The Company
 
  The Company (formerly named Waste Management, Inc.) is a leading
international provider of environmental, engineering and construction,
industrial and related services. See "Business of the Company." The principal
executive offices of the Company are located at 3003 Butterfield Road, Oak
Brook, Illinois 60521. The telephone number of the Company is (708) 572-8800.
 
  Through Waste Management, Inc. (formerly named Waste Management of North
America, Inc.), a wholly owned subsidiary of the Company ("WMI"), the Company
provides integrated solid waste management services in North America to
commercial, industrial, municipal and residential customers, as well as to
other waste management companies.
 
  CWM is an approximately 78.6%-owned subsidiary of the Company, and its
business is described below.
 
  Wheelabrator Technologies Inc., an approximately 55%-owned subsidiary of the
Company ("WTI"), provides a wide array of environmental products and services
in North America and abroad. WTI's clean energy group is a leading developer of
facilities and systems for, and provider of services to, the trash-to-energy,
energy, and independent power markets. WTI's clean water group is principally
involved in the design, manufacture and operation of facilities and systems
used to purify water, to treat municipal and industrial wastewater, to treat
and manage biosolids resulting from the treatment of wastewater by converting
them into useful fertilizers, and to recycle organic wastes into compost
material useable for horticultural and agricultural purposes. WTI's clean air
group designs, fabricates and installs technologically advanced air pollution
emission control and measurement systems and equipment, including systems which
remove pollutants from the emissions of WTI's trash-to-energy facilities as
well as power plants and other industrial facilities.
 
  Rust International Inc. ("Rust") is a subsidiary owned approximately 56% by
CWM and 40% by WTI, and its business is described below.
 
  The Company provides comprehensive waste management and related services
internationally, primarily through Waste Management International plc, a
subsidiary owned 56% by the Company, 12% by Rust and 12% by WTI ("Waste
Management International"). Waste Management International provides a wide
range
 
                                       7
<PAGE>
 
of solid and hazardous waste management services (or has interests in projects
or companies providing such services) in various countries in Europe and in
Argentina, Australia, Brunei, Hong Kong, Indonesia, Malaysia, New Zealand,
Singapore and Taiwan.
 
 CWM
 
  CWM is a leading provider of hazardous waste management services and, through
Rust, various other environmental and industrial services. CWM owns an
approximately 56% interest in Rust, a subsidiary engaged in furnishing
engineering, construction, environmental and infrastructure consulting,
hazardous substance remediation and a variety of other on-site industrial and
related services primarily to clients in government and in the chemical,
petrochemical, nuclear, energy, utility, pulp and paper, manufacturing,
environmental services and other industries. See "Business of CWM."
 
  CWM participates internationally in the waste management services industry
through Rust's 12% equity interest in Waste Management International.
 
  The principal executive offices of CWM are located at 3001 Butterfield Road,
Oak Brook, Illinois 60521. The telephone number of CWM is (708) 218-1500.
 
 Merger Sub
 
  Merger Sub is a wholly owned subsidiary of the Company formed to effectuate
the Merger. Merger Sub has not engaged in any operations to date. The principal
executive offices of Merger Sub are located at 3003 Butterfield Road, Oak
Brook, Illinois 60521. The telephone number of Merger Sub is (708) 572-8800.

RISK FACTORS  

  Stockholders of CWM should carefully consider the matters presented herein
under "Risk Factors," as well as the other matters discussed in this Proxy
Statement-Prospectus.  
 
BACKGROUND; CERTAIN RELATIONSHIPS WITH AFFILIATES; OWNERSHIP OF CWM
 
  CWM was organized by the Company as a wholly owned subsidiary in 1978. In
1986, in anticipation of the initial public offering of CWM Shares, the Company
consolidated under CWM's ownership substantially all of the Company's ongoing
domestic businesses that then provided hazardous waste management services. In
1986, CWM engaged in an initial public offering of approximately 18.9% of the
post-offering CWM Shares. In connection with these and other transactions, CWM
and the Company and their respective subsidiaries have entered into various
agreements with respect to their ongoing relationships and other matters. See
"Certain Relationships and Transactions."
 
  The Company currently owns approximately 78.6% of the outstanding CWM Shares
and will own 100% of the outstanding CWM Shares immediately upon consummation
of the Merger. As described above under "The Parties," CWM owns approximately
56% of Rust, which has an approximately 12% interest in Waste Management
International. In addition, WTI, of which the Company owns approximately 55%,
owns approximately 40% of Rust. The Company currently is able to elect the
entire Board of Directors of CWM and to control CWM's affairs.
 
  The following table sets forth the ownership of the outstanding CWM Shares as
of December 7, 1994 (the record date for the Special Meeting) and as of
immediately after the Merger.
 
<TABLE>
<CAPTION>
                                  NUMBER OF CWM SHARES
                                          OWNED            PERCENTAGE OF CLASS
                                 ----------------------- -----------------------
                                    AS OF    IMMEDIATELY    AS OF    IMMEDIATELY
                                 DECEMBER 7,  AFTER THE  DECEMBER 7,  AFTER THE
IDENTITY OF PERSON OR GROUP         1994       MERGER       1994       MERGER
- ---------------------------      ----------- ----------- ----------- -----------
<S>                              <C>         <C>         <C>         <C>
Company(1)...................... 164,278,417    1,000       78.6%       100%
Public Stockholders of CWM......  44,865,376        0       21.4%         0%
</TABLE>
- --------
(1) Such amounts and percentages do not reflect that certain members of the
    Company's management may be deemed to be affiliates of the Company. See
    "Securities Ownership--Ownership of CWM Shares."
 
                                       8
<PAGE>
 
 
RECORD DATE AND QUORUM
 
  The record date for the Special Meeting has been fixed by the Board of
Directors of CWM as the close of business on December 7, 1994 (the "Record
Date"). Only holders of record of CWM Shares on the Record Date will be
entitled to notice of and to vote at the Special Meeting and any adjournments
or postponements thereof. CWM stockholders of record on the Record Date are
entitled to one vote per CWM Share on any matter that may properly come before
the Special Meeting. As of the Record Date, there were 209,143,793 CWM Shares
outstanding and entitled to vote at the Special Meeting, held of record by
5,718 holders. The presence, either in person or by properly executed proxy, of
the holders of a majority of the outstanding CWM Shares at the close of
business on the Record Date is necessary to constitute a quorum at the Special
Meeting.
 
VOTE REQUIRED; CERTAIN CWM SHARES VOTING IN FAVOR OF THE MERGER
 
  Pursuant to the DGCL, in order for the Merger to take place, the Merger
Agreement must be approved and adopted by the affirmative vote of the holders
of a majority of the outstanding CWM Shares as of the Record Date (the "DGCL
Vote Requirement").
 
  As of the Record Date, the Company was the owner of approximately 78.6% of
the outstanding CWM Shares, and as of October 15, 1994, directors and executive
officers of the Company held beneficial ownership in the aggregate of
approximately 1% of the outstanding CWM Shares. See "Securities Ownership--
Ownership of CWM Shares." The Company has agreed to vote its CWM Shares for
approval and adoption of the Merger Agreement. However, as specified in the
Merger Agreement, it is a condition to the consummation of the Merger that the
Merger Agreement be approved and adopted at the Special Meeting by the holders
of a majority of the outstanding CWM Shares which are represented and entitled
to be voted at the Special Meeting and not directly or indirectly owned by the
Company (the "Independent Vote Requirement"). The Merger is also subject to
various other conditions. See "The Merger Agreement--Conditions." See also,
"Information Concerning the Special Meeting--Vote Required; Certain CWM Shares
Voting in Favor of the Merger" and "--Action to be Taken Under the Proxy."
 
TERMS OF THE MERGER; DESCRIPTION OF NOTES
 
  The following description of the Notes and the terms and conditions of the
Merger and the Merger Agreement is qualified in its entirety by reference to
the Indenture to be dated as of January 20, 1995 (the "Indenture"), by and
between the Company and NationsBank of Georgia, N.A., as trustee (the
"Trustee"), the form of which Indenture is filed as an exhibit to the
Registration Statement and is incorporated herein by reference (see
"Description of Notes" herein) and by reference to the copy of the Merger
Agreement attached as Appendix A hereto:
 
Notes....................... An estimated $550,000,000 aggregate principal
                             amount at maturity of Notes due on January 20,
                             2005 (excluding approximately $260,000,000
                             aggregate principal amount at maturity of Notes
                             issuable upon conversion, if ever, of the LYONs
                             (as defined below under "Treatment of Stock
                             Options and Liquid Yield Option Notes")). The
                             aggregate principal amount at maturity of Notes
                             actually issued in the Merger will depend on the
                             number of CWM Shares for which cash is paid in
                             lieu of issuing fractional Notes and the number
                             of Dissenting Shares, if any. Each Note will have
                             a principal amount due at maturity of $1,000.
 
                                       9
<PAGE>
 
 
Basis for Exchange.......... On the Effective Date, all publicly held CWM
                             Shares, other than Dissenting Shares, will,
                             without any action on the part of the holder
                             thereof, be converted into Notes on the basis of
                             one Note for every 81.1 CWM Shares, plus, as
                             applicable, cash in lieu of issuance of
                             fractional Notes, as provided below. Accordingly,
                             stockholders who beneficially own fewer than 82
                             CWM Shares will not be entitled to receive any
                             Notes in the Merger, but rather will be paid cash
                             for such CWM Shares on the basis described
                             elsewhere in this Proxy Statement-Prospectus. See
                             "The Merger Agreement--Merger Consideration." By
                             virtue of the Merger, CWM Shares held by the
                             Company and its subsidiaries will be cancelled
                             (except for CWM Shares held in escrow for
                             exchange for the Company's Liquid Yield Option
                             Notes due 2012, which CWM Shares will be
                             converted into the merger consideration in the
                             same manner as CWM Shares generally).
 
Interest.................... Interest will be paid semi-annually on January 20
                             and July 20 of each year at the rate of 2.0% per
                             annum of the principal amount at maturity of each
                             Note from and after the Effective Date.
 
Stated Issue Price and       The Notes will have a Stated Issue Price of
Stated Discount              $717.80. The difference between the principal
                             amount at maturity of $1,000 and the Stated Issue
                             Price represents the Stated Discount which,
                             together with cash interest payable on the Notes
                             as described above, will accrue at a rate of
                             5.75% per annum (determined on a semi-annual bond
                             equivalent basis) based on the Stated Issue
                             Price. Such rate will be used solely for purposes
                             of determining the prices at which the Company
                             may be required to purchase or may redeem the
                             Notes (as described below) and will differ from a
                             Holder's actual yield.
 
Conversion Right............ Each Note will be convertible at the option of
                             the holder at any time on or prior to maturity,
                             unless previously redeemed or otherwise purchased
                             by the Company, into Company Shares. The
                             conversion ratio will be determined on the
                             Effective Date by dividing (i) the Stated Issue
                             Price of $717.80 by (ii) the Company Share
                             Closing Price, provided that the number of
                             Company Shares initially issuable upon conversion
                             of a Note shall not be less than 21.90, nor more
                             than 26.76. The Company may at its option in lieu
                             of issuing Company Shares on conversion of a Note
                             pay cash for each Company Share otherwise
                             issuable equal to the closing market price per
                             Company Share on the trading day immediately
                             preceding the date of such conversion.
 
Subordination............... The Notes will be subordinated to all existing
                             and future Senior Indebtedness (as defined herein
                             under "Description of Notes") of the Company. As
                             of September 30, 1994, the Company and its
                             subsidiaries had approximately $6.455 billion of
                             outstanding indebtedness (excluding accrued
                             interest thereon) which constituted Senior
                             Indebtedness of the Company or outstanding
                             indebtedness (excluding consolidated intercompany
                             payables) of the subsidiaries of the Company not
                             guaranteed by the Company which would not have
                             constituted Senior Indebtedness but to which the
                             Notes would have been effectively subordinated.
                             There  
 
                                       10
<PAGE>
 
                             are no restrictions in the Indenture on the
                             creation of additional Senior Indebtedness (or
                             any other indebtedness), and the incurrence of
                             significant amounts of additional indebtedness
                             could have an adverse impact on the Company's
                             ability to service its indebtedness including the
                             Notes.
 
Original Issue Discount..... Each Note is expected to be issued at an Original
                             Issue Discount for federal income tax purposes.
                             Original Issue Discount is expected to differ
                             from the Stated Discount. CWM stockholders should
                             be aware that although the Holder will receive no
                             cash payment in respect of such Original Issue
                             Discount, accrued Original Issue Discount will be
                             includable periodically in a Holder's gross
                             income for federal income tax purposes prior to
                             conversion, redemption, purchase or other
                             disposition of such Holder's Notes, whether such
                             Notes are ultimately converted, redeemed,
                             purchased, sold (to the Company or otherwise) or
                             paid at maturity. See "Certain Tax
                             Considerations" below.
 
Optional Redemption......... The Notes are redeemable on or after March 15,
                             2000 for cash at any time at the option of the
                             Company, in whole or in part, at redemption
                             prices equal to the sum of (i) the Stated Issue
                             Price, (ii) the accrued Stated Discount to the
                             date of redemption, and (iii) the accrued but
                             unpaid cash interest to the date of redemption.
 
Purchase at the Option of    The Company will purchase for cash any Note at
the Holder.................. the option of the Holder on March 15, 1998 and
                             March 15, 2000 at purchase prices of $790.24 and
                             $843.35, respectively, plus accrued but unpaid
                             interest to the purchase date. Such purchase
                             prices include any amounts representing accrued
                             Stated Discount. The Company will also purchase
                             for cash any Note at the option of the Holder
                             following a Change in Control (as defined under
                             "Description of Notes") occurring on or prior to
                             March 15, 1998 at a purchase price determined in
                             the same manner as provided above under "Optional
                             Redemption."

Cash for Fractional Notes... No fractional Notes will be issued in the Merger.
                             Cash will be paid in respect of fractional Notes
                             that would otherwise be issuable in an amount
                             equal to the product of (i) the number of CWM
                             Shares not converted into whole Notes in the
                             Merger and (ii) an amount equal to the average of
                             the closing sales prices for CWM Shares as
                             reported on the NYSE Composite Tape for the ten
                             trading days immediately preceding the date of
                             the Special Meeting (the "CWM Share Closing
                             Price").  
 
Sinking Fund................ None.
 
Listing..................... Although application will be made to list the
                             Notes (and the Company Shares into which the
                             Notes are convertible) on the NYSE, there can be
                             no assurance that there will be a sufficient
                             number of holders of Notes, after taking into
                             account cash payments in lieu of fractional
                             Notes, for an active trading market for the Notes
                             to develop or be maintained. In the event an
                             active trading market is not developed or
                             maintained, the liquidity and trading prices of
                             the Notes could be adversely affected. See
                             "Certain Investment Considerations--No Prior
                             Market for Notes; Adverse Impact of Profit
                             Sharing Plan Sales" and "Special Factors--Certain
                             Consequences of the Merger."  
 
                                       11
<PAGE>
 
 
  The Notes to be issued to holders of CWM Shares and cash in lieu of
fractional Notes are referred to herein as the "Merger Consideration."
 
  Upon consummation of the Merger, CWM will be a wholly owned subsidiary of the
Company, and market trading of CWM Shares will cease. The Merger will be
consummated by the filing with the Secretary of State of the State of Delaware
of a certificate of merger (such certificate of merger being referred to herein
as the "Merger Certificate" and the time of such filing being referred to
herein as the "Effective Time"). It is currently anticipated that, if all
conditions to the Merger have been met or waived, the filing will take place on
the date of the Special Meeting, or as soon thereafter as is practicable. All
shares of Merger Sub will be converted in the Merger into CWM Shares.
 
  The respective obligations of CWM, the Company and Merger Sub to consummate
the Merger are subject to certain conditions. See "The Merger Agreement--
Conditions." One such condition is that the holders of a majority of the
outstanding CWM Shares which are represented and entitled to be voted at the
Special Meeting and not directly or indirectly owned by the Company vote for
approval and adoption of the Merger Agreement. There can be no assurance that
all of the conditions to the consummation of the Merger will be satisfied or
waived.
 
  The Merger Agreement may be terminated and the Merger abandoned at any time
prior to the Effective Time notwithstanding any approval thereof by the
stockholders of CWM, and the Merger Agreement may be amended under certain
conditions. See "The Merger Agreement--Termination; Amendments."
 
  The Merger Agreement generally provides that all costs and expenses incurred
in connection with the Merger Agreement will be paid by the party incurring
such expenses.
 
EXCHANGE AND PAYMENT PROCEDURES
 
  As soon as practicable after the Effective Time, Harris Trust and Savings
Bank, as exchange agent (the "Exchange Agent"), will mail to each record holder
(other than the Company or holders of Dissenting Shares) of an outstanding
certificate or certificates representing CWM Shares as of the Effective Time, a
letter of transmittal and instructions for use in effecting the surrender of
such certificates for exchange for the Merger Consideration. STOCKHOLDERS OF
CWM SHOULD NOT SUBMIT CERTIFICATES REPRESENTING THEIR CWM SHARES FOR EXCHANGE
FOR THE MERGER CONSIDERATION UNLESS AND UNTIL THEY RECEIVE SUCH A LETTER OF
TRANSMITTAL AND INSTRUCTIONS. See "The Merger Agreement--Exchange and Payment
Procedures."
 
BACKGROUND OF THE MERGER
 
  For a detailed description of the Company's reasons for proposing the Merger
and of the events leading up to the approval and adoption of the Merger
Agreement by the Board of Directors of CWM, see "Special Factors--Background of
the Merger."
 
RECOMMENDATION OF THE SPECIAL COMMITTEE AND THE CWM BOARD OF DIRECTORS
 
  The Board of Directors of CWM appointed a special committee consisting of the
two directors of CWM who are not directors of the Company or any of its
subsidiaries (other than CWM) or officers or employees of the Company or any of
its subsidiaries (the "Special Committee") to review, evaluate and negotiate
the terms of the Merger. At a Special Committee meeting held on October 14,
1994, the Special Committee unanimously determined that the Merger was fair to,
and in the best interests of, CWM and its public stockholders, unanimously
approved the Merger and the Merger Agreement and unanimously determined to
recommend that the Board of Directors of CWM approve the Merger and the Merger
Agreement. Thereafter, based on the recommendation of the Special Committee,
the Board of Directors of CWM (including
 
                                       12
<PAGE>
 
the directors of CWM who are not employees of CWM) unanimously determined that
the terms of the Merger were fair to, and in the best interests of, the public
stockholders of CWM, approved the Merger and the Merger Agreement, and
determined to recommend to the stockholders of CWM that they vote for approval
and adoption of the Merger Agreement. ACCORDINGLY, THE BOARD OF DIRECTORS OF
CWM RECOMMENDS THAT THE STOCKHOLDERS OF CWM VOTE FOR APPROVAL AND ADOPTION OF
THE MERGER AGREEMENT. HOWEVER, STOCKHOLDERS OF CWM SHOULD BE AWARE THAT A
MAJORITY OF THE 10 MEMBERS OF THE BOARD OF DIRECTORS OF CWM HAVE CONFLICTS OF
INTEREST IN CONNECTION WITH THE MERGER. FIVE OF SUCH DIRECTORS OF CWM ARE
CURRENTLY ALSO MEMBERS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND ONE
ADDITIONAL CWM DIRECTOR IS ALSO AN OFFICER OF THE COMPANY. TWO CWM DIRECTORS
ARE ALSO OFFICERS OF CWM. See "Special Factors--Recommendation of the Special
Committee and the Board of Directors of CWM; Fairness of the Merger; Conflicts
of Interest."
 
OPINION OF CWM'S FINANCIAL ADVISOR
 
  On October 14, 1994, CS First Boston Corporation ("CS First Boston") rendered
to the Special Committee its oral opinion, subsequently confirmed in writing,
to the effect that, as of such date, the consideration to be received in the
Merger by the holders of CWM Shares (other than the Company and its affiliates)
was fair to such holders from a financial point of view. The full text of the
written opinion of CS First Boston dated October 14, 1994, which sets forth the
assumptions made, matters considered and limitations on the review undertaken,
is attached as Appendix B to this Proxy Statement-Prospectus and should be read
carefully in its entirety. See "Special Factors--Opinion of CWM's Financial
Advisor."
 
CONFLICTS OF INTEREST
 
  Directors and executive officers of CWM beneficially owned as of October 15,
1994 less than 1% of the outstanding CWM Shares to be converted into the Merger
Consideration, and approximately 2.7% of the outstanding Company Shares.
Directors and executive officers of the Company beneficially owned as of
October 15, 1994 approximately 1% of the outstanding CWM Shares and 2.9% of the
outstanding Company Shares. See "Special Factors--Conflicts of Interest" and
"Securities Ownership--Ownership of Company Shares" and "--Ownership of CWM
Shares." All CWM Shares held by such directors and executive officers at the
Effective Time will, upon consummation of the Merger, be converted into the
right to receive the Merger Consideration.
 
  Dean L. Buntrock, Donald F. Flynn, Peter H. Huizenga, Peer Pedersen, James E.
Koenig and Phillip B. Rooney, all of whom currently serve on the Board of
Directors of CWM, are also directors or officers or both of the Company. Two
CWM directors are also officers of CWM. See "Special Factors--Interests of
Certain Persons in the Merger."
 
ACCOUNTING TREATMENT
 
  The Company will treat the Merger as a purchase of the approximately 21.4%
minority interest in CWM.
 
CERTAIN TAX CONSIDERATIONS
 
  The Merger will be a taxable transaction to the holders of CWM Shares. Each
stockholder will recognize gain or loss measured by the difference between (i)
the sum of the fair market value of the Notes and the amount of cash received
in the Merger and (ii) the stockholder's basis in the CWM Shares. See "Certain
Tax Considerations."
 
  Each Note is expected to be issued with Original Issue Discount for federal
income tax purposes. A Holder of a Note will be required to include
periodically accrued Original Issue Discount in income for federal income tax
purposes prior to conversion, redemption, purchase, other disposition or
maturity of the
 
                                       13
<PAGE>
 
Note. In addition, Holders will be required to include the semi-annual cash
interest payments on each Note in income in accordance with their regular
method of accounting. See "Certain Tax Considerations."
 
LITIGATION REGARDING THE MERGER
 
  Several putative class action lawsuits seeking injunctive relief and
unspecified money damages were filed in the Chancery Court of the State of
Delaware in and for New Castle County between July 29 and August 5, 1994
against the Company, CWM and the individual directors of CWM in connection with
the proposed Merger. These lawsuits have since been consolidated for all
purposes into a single action captioned In re Chemical Waste Management, Inc.
Shareholders Litigation, the complaint in which alleges, among other things,
that the defendants have breached their fiduciary duties to CWM's minority
stockholders because the initially proposed merger consideration was inadequate
and unfair. Discovery is ongoing in the consolidated action. The Company and
CWM believe that their actions and those of CWM's Board of Directors (and its
Special Committee) in connection with the proposed Merger have been in
accordance with Delaware law. Accordingly, the Company, CWM and CWM's directors
intend to contest this lawsuit vigorously.
 
REGULATORY REQUIREMENTS
 
  Except for the filing of the Merger Certificate with the Secretary of State
of the State of Delaware after approval and adoption of the Merger Agreement
pursuant to the DGCL, and compliance with federal and state securities laws,
neither the Company nor CWM is aware of any material United States federal or
state or foreign governmental regulatory requirement necessary to be complied
with or approval that must be obtained in connection with the Merger.
 
MARKET PRICES OF CWM AND COMPANY SHARES
 
  CWM Shares and Company Shares are traded on the NYSE under the symbols "CHW"
and "WMX," respectively. The following table shows the per share high and low
sales prices reported on the NYSE Composite Tape for transactions in CWM Shares
and Company Shares on July 28, 1994 (the trading day on which the initial
proposal to effectuate the Merger was publicly announced after the close of the
NYSE), October 14, 1994 (the trading day on which the approval of the Merger
Agreement was publicly announced after the close of the NYSE) and December 7,
1994. See "CWM Share and Company Share Market Price Information; Dividend
Information; and CWM Share Purchase Information."
 
<TABLE>
<CAPTION>
                                                    MARKET PRICE
                                                       OF CWM    MARKET PRICE OF
                                                       SHARES    COMPANY SHARES
                                                    ------------ ---------------
                                                    HIGH   LOW    HIGH     LOW
                                                    ----- ------ ------- -------
      <S>                                           <C>   <C>    <C>     <C>
      July 28, 1994................................ $  8  $7 3/4 $29 3/8 $28 5/8
      October 14, 1994............................. 8 1/4  7 3/4  29 1/4  28 3/4
      December 7, 1994............................. 9 1/2  9 1/4  25 3/4  25 1/8
</TABLE>
 
TREATMENT OF STOCK OPTIONS AND LIQUID YIELD OPTION(TM) NOTES
 
  Each option to acquire CWM Shares which is outstanding under CWM stock option
plans will, upon consummation of the Merger, be adjusted by virtue of the
Merger into the right to purchase on the exercise thereof the number of Company
Shares determined on the Effective Date by multiplying the number of CWM Shares
subject to such option by the quotient determined by dividing the CWM Share
Closing Price by the Company Share Closing Price (rounded up to the nearest
whole number if such number of Company Shares is not a whole number) at a price
per Company Share equal to the quotient determined by dividing the aggregate
option exercise price payable for CWM Shares by the terms of such option by the
number of Company Shares issuable on exercise of such option, as provided
above, subject to all other terms specified in such options. See "The Merger
Agreement--Treatment of Stock Options."
- --------
(TM)Merrill Lynch & Co.
 
                                       14
<PAGE>
 
 
  The Liquid Yield Option Notes due 2010 issued by CWM (the "CWM LYONs") and
the Liquid Yield Option Notes due 2012 issued by the Company (the "Company
LYONs" and together with the CWM LYONs, the "LYONs") currently are convertible
into (in the case of the CWM LYONs) or exchangeable for (in the case of the
Company LYONs) CWM Shares. Upon consummation of the Merger, the LYONs will
become convertible into the Merger Consideration to which the holders would
have been entitled had they converted or exchanged the LYONs immediately prior
to the Effective Time. See "The Merger Agreement--Treatment of LYONs."
 
DELAWARE STATUTORY APPRAISAL RIGHTS
 
  Under Delaware law, record holders of CWM Shares who, prior to the CWM
stockholder vote on the Merger, properly demand appraisal and vote against or
abstain from voting with respect to the Merger have the right to obtain a cash
payment for the "fair value" of their CWM Shares (excluding any element of
value arising from the accomplishment or expectation of the Merger). In order
to exercise such rights, holders must comply with the procedural requirements
of Section 262 of the DGCL, a description of which is provided under "Delaware
Statutory Appraisal Rights" and the full text of which is attached to this
Proxy Statement- Prospectus as Appendix C. Such "fair value" would be
determined in judicial proceedings, the result of which cannot be predicted.
Failure to take any of the steps required under Section 262 on a timely basis
may result in the loss of appraisal rights.
 
COMPARISON OF RIGHTS OF HOLDERS OF CWM SHARES AND COMPANY SHARES
 
  CWM and the Company are each incorporated under the DGCL. Accordingly, there
are no differences in the rights of holders of CWM Shares and Company Shares
pursuant to applicable state law. Certain provisions of the Company's
Certificate of Incorporation may have an anti-takeover effect. These include
provisions establishing a classified board of directors, prohibiting
stockholder action by written consent, preventing stockholders from calling
special meetings, providing that directors may be removed only for cause, and
requiring an 80% vote of the voting stock of the Company to amend any of the
foregoing provisions. CWM's Certificate of Incorporation contains all of the
foregoing provisions except the prohibition of stockholder action by written
consent. In addition, both the Company By-Laws and the CWM By-Laws contain
advance notice provisions with respect to director nominations by stockholders
and stockholder proposals which may also have an anti-takeover effect. Pursuant
to a plan adopted by the Company in January 1987, each Company Share carries
the right (referred to herein as a "Right") to purchase one four-hundredth
(subject to adjustment) of a share of Series A Preferred Stock, $1.00 par value
("Preferred Stock") at a price of $68.75 (subject to adjustment). The Rights
are tradeable only with the Company Shares until they become exercisable. The
Rights become exercisable ten days after the earlier of a public announcement
that a person has acquired 20% or more of the Company's outstanding voting
stock or a person's commencement or announcement of a tender or exchange offer
that would result in such person's owning 30% or more of the Company's
outstanding voting stock. The Rights are subject to redemption by the Company
at a price of $.0125 per Right, subject to certain limitations, and will expire
on February 6, 1997. The Preferred Stock carries certain preferential dividend
and liquidation rights and certain voting and other rights. If the Company or
its assets are acquired in certain merger or other transactions after a person
acquires Company voting stock or commences or announces an offer as provided
above, each holder of a Right may purchase, at the exercise price of the Right,
shares of common stock of the acquiring company having a market value of two
times the exercise price of the Right. If the Company is the survivor in
certain merger transactions or in the event of certain other "self-dealing"
transactions, each holder of a Right may purchase, at the exercise price of the
Right, shares of Preferred Stock having a market value of twice the exercise
price of the Right. Rights held by an acquiring person become void upon the
occurrence of such events.
 
 
                                       15
<PAGE>
 
  For a more detailed description of the capital stock of CWM and the Company
and the differences in rights of holders of CWM Shares and Company Shares
attributable to differences between CWM's and the Company's respective
Certificates of Incorporation and attributable to the Rights, see "Comparison
of Stockholders' Rights."
 
SELECTED FINANCIAL DATA
 
  The following selected financial data of CWM and the Company should be read
in conjunction with the Consolidated Financial Statements and the notes thereto
and "Management's Discussion and Analysis of Financial Condition and Results of
Operations" of each of CWM and the Company incorporated by reference into the
Form 10-K Annual Reports of CWM and the Company, respectively, for the year
ended December 31, 1993, and the quarterly reports on Form 10-Q of CWM and the
Company, respectively, for the three-month and nine-month periods ended
September 30, 1994, which Form 10-K and 10-Q Reports are incorporated by
reference herein. The historical financial data for CWM and the Company as of
December 31, 1989, 1990, 1991, 1992 and 1993 and for the periods then ended
have been derived from financial statements audited by Arthur Andersen LLP,
independent public accountants. See notes to CWM's and the Company's
Consolidated Financial Statements incorporated by reference into CWM's and the
Company's respective Form 10-K Reports for the year ended December 31, 1993 for
further discussion of the basis of presentation and principles of
consolidation.
 
                CHEMICAL WASTE MANAGEMENT, INC. AND SUBSIDIARIES
 
                  SELECTED CONSOLIDATED FINANCIAL INFORMATION
               (000'S OMITTED IN TABLE, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                    AS OF AND FOR THE
                                                                                    NINE MONTHS ENDED
                                AS OF AND FOR THE YEARS ENDED DECEMBER 31,            SEPTEMBER 30,
                          ------------------------------------------------------  ----------------------
                             1989       1990       1991       1992     1993(1)     1993(1)     1994(1)
                          ---------- ---------- ---------- ---------- ----------  ----------  ----------
<S>                       <C>        <C>        <C>        <C>        <C>         <C>         <C>
Revenue.................  $  846,778 $1,146,972 $1,358,344 $1,518,603 $2,129,791  $1,570,987  $1,690,711
Income (loss) before
 cumulative effect of
 change in accounting
 principle(2)...........  $  144,243 $  175,591 $  100,806 $  129,735 $ (300,316) $ (316,014) $   46,608
Average shares and
 equivalent shares
 outstanding during the
 period.................     202,111    207,238    206,917    204,967    210,700     211,170     209,180
Earnings (loss) per
 common and common
 equivalent share before
 cumulative effect of
 change in accounting
 principle..............  $     0.71 $     0.85 $     0.49 $     0.63 $    (1.43) $    (1.50) $     0.22
Dividends per share(3)..  $     0.11 $     0.15 $     0.19 $     0.20 $     0.10  $     0.10  $      --
Total assets............  $1,105,154 $1,606,460 $2,025,512 $2,442,379 $3,124,044  $3,117,386  $3,161,192
Due to WMX Technologies,
 Inc....................  $  104,162 $   53,230 $  326,593 $  626,712 $1,134,596  $1,075,954  $1,203,917
Other long-term debt....  $    3,515 $  190,319 $  373,680 $  138,338 $   58,318  $   84,747  $   75,657
Redeemable preferred
 stock..................  $    5,000 $    5,000 $    5,000 $    5,000 $      --   $      --   $      --
Stockholders' equity....  $  794,663 $  960,642 $  921,403 $1,146,581 $  694,919  $  683,135  $  753,283
</TABLE>
- --------
(1) Results for 1993 and the nine months of 1994 reflect the consolidation of
    Rust. See Note 1 to Consolidated Financial Statements of CWM incorporated
    by reference herein.
(2) Includes special charges, before tax, of $36,000,000 in 1991, $111,200,000
    in 1992 and $550,000,000 in 1993 and the nine months ended September 30,
    1993, and also includes non-taxable gains of $10,700,000 in 1991,
    $47,000,000 in 1992 and $10,500,000 in 1993 and the nine months ended
    September 30, 1993 resulting from issuance of stock by subsidiary and
    equity investee. See Notes 2 and 17 to CWM's Consolidated Financial
    Statements incorporated by reference herein.
(3) In August 1993, CWM's Board of Directors suspended indefinitely the payment
    of quarterly cash dividends on CWM Shares.
 
                                       16
<PAGE>
 
 
                    WMX TECHNOLOGIES, INC. AND SUBSIDIARIES
 
                  SELECTED CONSOLIDATED FINANCIAL INFORMATION
         (000'S OMITTED IN TABLE, EXCEPT PER SHARE AMOUNTS AND RATIOS)
 
<TABLE>
<CAPTION>
                                                                                      AS OF AND FOR THE NINE
                                                                                           MONTHS ENDED
                                 AS OF AND FOR THE YEARS ENDED DECEMBER 31,                SEPTEMBER 30,
                         ------------------------------------------------------------ -----------------------
                          1989(1)     1990(2)      1991(3)     1992(4)      1993(5)     1993(5)      1994
                         ---------- -----------  ----------- -----------  ----------- ----------- -----------
<S>                      <C>        <C>          <C>         <C>          <C>         <C>         <C>
Revenue................. $4,413,742 $ 6,034,406  $ 7,550,914 $ 8,661,027  $ 9,135,577 $ 6,748,668 $ 7,438,899
Income before
 extraordinary item and
 cumulative effect of
 accounting changes..... $  562,135 $   709,309  $   606,323 $   921,175  $   452,776 $   289,853 $   578,614
Extraordinary item, net
 of income taxes........        --       24,547          --          --           --          --          --
Cumulative effect of
 accounting changes.....        --          --           --       71,139          --          --          --
Net income.............. $  562,135 $   684,762  $   606,323 $   850,036  $   452,776 $   289,853 $   578,614
Average shares and
 equivalent shares
 outstanding............    459,727     476,580      493,167     493,948      485,374     485,911     483,985
Earnings (loss) per
 common and common
 equivalent share:
  Income before
   extraordinary item
   and cumulative effect
   of accounting
   changes.............. $     1.22 $      1.49  $      1.23 $      1.86  $       .93 $       .60 $      1.20
  Extraordinary item....        --         (.05)         --          --           --          --          --
  Cumulative effect of
   accounting changes...        --          --           --         (.14)         --          --          --
  Net income............ $     1.22 $      1.44  $      1.23 $      1.72  $       .93 $       .60 $      1.20
Dividends per share..... $      .29 $       .35  $       .42 $       .50  $       .58 $       .43 $       .45
Total assets............ $6,405,209 $10,518,243  $12,572,310 $14,114,180  $16,264,476 $16,146,148 $17,323,786
Long-term debt.......... $1,503,817 $ 3,139,623  $ 3,782,973 $ 4,312,511  $ 6,145,584 $ 5,260,166 $ 6,221,908
Put options............. $      --  $       --   $       --  $       --   $       --  $       --  $   240,151
Stockholders' equity.... $2,738,015 $ 3,673,017  $ 4,133,100 $ 4,319,645  $ 4,159,452 $ 4,072,954 $ 4,426,763
Ratios of earnings to
 fixed charges            7.13 to 1   6.43 to 1    4.15 to 1   5.13 to 1    2.70 to 1   2.45 to 1   3.92 to 1
</TABLE>
- --------
(1) The results for 1989 include a non-taxable gain of $70,826,000 resulting
    from the public offering of 5,000,000 shares of common stock of CWM in
    October 1989 and special charges of $112,000,000 before tax.
(2) The results for 1990 include an extraordinary charge of $24,547,000, or
    $.05 per share, representing the Company's percentage interest in the
    writedown by WTI of WTI's investment in the stock of The Henley Group, Inc.
    and Henley Properties Inc. to market value.
(3) The results for 1991 include a special charge of $296,000,000, before tax
    and minority interest, primarily to reflect then current estimates of the
    environmental remediation liabilities at waste disposal sites previously
    used or operated by the Company and its subsidiaries or their predecessors.
    See Note 11 to the Company's Consolidated Financial Statements incorporated
    by reference herein.
(4) The results for 1992 include a non-taxable gain of $240,000,000 (before
    minority interest) resulting from the initial public offering of Waste
    Management International, as well as special charges of $219,900,000,
    before tax and minority interest, primarily related to writedowns of the
    Company's medical waste business, CWM incinerators in Chicago, Illinois and
    Tijuana, Mexico and The Brand Companies, Inc.'s ("Brand") investment in its
    asbestos abatement business and certain restructuring costs incurred by
    Brand and CWM related to the formation of Rust and one-time after-tax
    charges aggregating $71,139,000, or $.14 per share, related to the
    cumulative effect of adopting two new accounting standards. See Notes 1, 9
    and 11 to the Company's Consolidated Financial Statements incorporated by
    reference herein.
(5) The results for 1993 and the nine months ended September 30, 1993 include a
    non-taxable gain of $15,109,000, relating to the issuance of shares by
    Rust, as well as the Company's share of a special asset revaluation and
    restructuring charge of $550,000,000, before tax and minority interest,
    recorded by CWM related primarily to a revaluation of its thermal treatment
    business, and a provision of approximately $14,000,000 to adjust deferred
    income taxes resulting from the 1993 tax law change. See Notes 1 and 11 to
    the Company's Consolidated Financial Statements incorporated by reference
    herein.
(6) Certain amounts have been restated to conform to 1994 classifications.
 
 
                                       17
<PAGE>
 
COMPARATIVE HISTORICAL AND PRO FORMA PER SHARE DATA
 
  The following table sets forth certain historical information per Company
Share and per CWM Share and the pro forma effect of the Merger on each Company
Share determined as if the Merger had taken place as of January 1, 1993 and on
the assumption that the Notes were outstanding throughout the periods
presented:
 
<TABLE>
<CAPTION>
                                                  AS OF AND FOR THE YEAR ENDED
                                                        DECEMBER 31, 1993
                                                  ------------------------------
                                                  PER COMPANY
                                                     SHARE     PER    PRO FORMA
                                                    BEFORE     CWM   PER COMPANY
                                                    MERGER    SHARE     SHARE
                                                  ----------- -----  -----------
<S>                                               <C>         <C>    <C>
Book value.......................................    $8.60    $3.32     $8.43
Cash dividends declared..........................      .58      .10       .58
Income (loss)....................................      .93    (1.43)      .76
</TABLE>
 
<TABLE>
<CAPTION>
                                                   AS OF AND FOR THE NINE MONTHS
                                                     ENDED SEPTEMBER 30, 1994
                                                   -----------------------------
                                                   PER COMPANY
                                                      SHARE     PER   PRO FORMA
                                                     BEFORE     CWM  PER COMPANY
                                                     MERGER    SHARE    SHARE
                                                   ----------- ----- -----------
<S>                                                <C>         <C>   <C>
Book value........................................    $9.15    $3.60    $8.97
Cash dividends declared...........................      .45      --       .45
Income............................................     1.20      .22     1.19
</TABLE>
 
RECENT DEVELOPMENT
 
  On December 6, 1994, Rust announced that it had signed a definitive agreement
under which OHM Corporation ("OHM") will acquire Rust's hazardous and nuclear
waste remediation services business units in exchange for 10,368,000 shares of
OHM common stock, representing approximately 40% of the outstanding OHM shares
upon completion of the transaction. The transaction is subject to expiration or
termination of the waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act and to approval by the stockholders of OHM.

  In connection with the transaction, the Company has agreed to provide credit
enhancement for a period of five years following the closing to enable OHM to
secure lower cost financing. In addition, upon consummation of the transaction,
Rust will be entitled to proportional representation on OHM's Board of
Directors, OHM will gain access to Rust's technologies relating to mobile waste
treatment processes, and the parties will designate each other as preferred
providers of services which they offer commercially. Subject to certain
exceptions, Rust, CWM, the Company and their wholly owned subsidiaries will
also agree not to compete in the hazardous and radioactive substance
remediation services business in North America for a seven-year period
following the closing.  
 
  The transaction, if consummated, is not expected to have a material impact on
CWM's business or consolidated results of operations.
 
                                       18
<PAGE>
 
                               RISK FACTORS  

  The following are certain risk factors which should be noted by the holders
of CWM Shares in considering whether or not to vote for approval and adoption
of the Merger Agreement.  
 
NO PRIOR MARKET FOR NOTES; ADVERSE IMPACT OF PROFIT SHARING PLAN SALES
 
  The Notes to be issued in exchange for CWM Shares in the Merger will be newly
issued securities for which no public market currently exists. While the
Company intends to apply to list the Notes on the NYSE, there can be no
assurance that an active trading market for the Notes will develop or be
maintained. In the event an active trading market is not developed or
maintained, the liquidity and trading prices of the Notes could be adversely
affected.
 
  In addition, the WMX Technologies, Inc. Profit Sharing and Savings Plan (the
"Profit Sharing Plan") is the owner of approximately 0.4% of the total
outstanding CWM Shares. The Profit Sharing Plan's CWM Shares will be exchanged
in the Merger for the Merger Consideration. In this connection, the Company has
been advised by the Profit Sharing Plan trustees, who are Company directors,
officers or employees, that such trustees intend to consider the possibility of
liquidating the Profit Sharing Plan's position in the Notes which it will hold
upon consummation of the Merger. See "Securities Ownership--Ownership of CWM
Shares--By the Company, the Profit Sharing Plan and the Company's Directors and
Executive Officers." Such sales of Notes on behalf of the Profit Sharing Plan,
or any market anticipation of such sales, could have an adverse impact on the
market or the market trading prices for the Notes.
 
INCREASED INDEBTEDNESS
 
  The issuance of the Notes in the Merger will result in an increase in the
outstanding indebtedness of the Company. See "Capitalization." The Indenture
contains no restriction on the Company's ability to further increase its
indebtedness.
 
ORIGINAL ISSUE DISCOUNT
 
  Each Note is expected to be issued at an Original Issue Discount for federal
income tax purposes. CWM stockholders should be aware that although the holder
will receive no cash payment in respect of such Original Issue Discount,
accrued Original Issue Discount will be includable periodically in a holder's
gross income for federal income tax purposes prior to conversion, redemption,
purchase or other disposition of such holder's Notes, whether such Notes are
ultimately converted, redeemed, purchased, sold (to the Company or otherwise)
or paid at maturity. See "Certain Tax Considerations."
 
CERTAIN RELATIONSHIPS AND TRANSACTIONS; CONFLICTS OF INTEREST
 
  The Company owns approximately 78.6% of the issued and outstanding CWM
Shares. In addition, all but two of the directors of CWM are also directors or
officers, or both, of the Company or officers of CWM. Such ownership, including
the Company's ability to elect the entire Board of Directors of CWM, give the
Company effective control of CWM, and results in conflicts of interest with
respect to transactions between the two companies, including the proposed
Merger. As discussed elsewhere in this Proxy Statement-Prospectus, the Board of
Directors of CWM appointed the Special Committee (consisting of the two
directors who are not directors or employees of the Company or officers of CWM)
to review, evaluate and negotiate the terms of the Merger, and the Merger was
approved by the Board of Directors of CWM based on the recommendation of the
Special Committee. See "Background of the Merger."
 
  The Company and CWM are also parties to various agreements and arrangements,
and from time to time engage in transactions, with each other and other
subsidiaries of the Company, which agreements, arrangements and transactions
are described in "Certain Relationships and Transactions."
 
                                       19
<PAGE>
 
EXPOSURE TO ENVIRONMENTAL AND OTHER RISKS  

  The operations of the Company and CWM, like those of other companies engaged
in environmental services businesses, expose the Company to potential
environmental liabilities (which may include fines, penalties, the expenditure
of funds for remedial work and related activities, and risks such as the
potential for harmful substances escaping into the environment and causing
damage or injuries), the cost of which could be substantial. The possibility
exists that such matters could have a material adverse impact on earnings for
one or more fiscal quarters or years.  

  The Company currently maintains liability insurance coverage for occurrences
under various environmental impairment, primary casualty and excess liability
insurance policies, but there can be no assurance that such insurance will
continue to be available to the Company. In addition, the market for non-sudden
environmental impairment liability insurance is still constricted, with only a
few insurance companies currently offering coverage and with coverage entailing
limited amounts with restrictive terms and high premium costs. Consequently,
the Company has determined to maintain coverage under only one non-sudden
environmental impairment liability insurance policy. Under that policy, losses
paid by the carrier must be reimbursed by the Company over a period of years,
subject to a requirement that the Company make advance deposits with the
carrier for such purpose. A claim under such an insurance policy which does not
transfer risk, if successful and of sufficient magnitude, could have a material
adverse effect on the Company's business, results of operations or financial
condition.  

  In addition, the environmental services industry has become subject to
extensive and evolving regulation by federal, state, local and foreign
authorities. The Company cannot predict the extent to which any legislation or
regulation that may be enacted or enforced in the future, or the modification,
repeal or failure to enact any legislation or regulation, may affect its
operations.  

INTENSE COMPETITION IN THE COMPANY'S MARKETS  
 
  The industries in which the Company's subsidiaries operate are characterized
by very competitive markets. WMI encounters intense competition, primarily in
the pricing and rendering of services, from various sources in all phases of
its solid waste management and related operations. Competition is encountered
from national, regional and local collection companies as well as from
municipalities, counties and local government agencies (which, through use of
tax revenues, may be able to provide such services at lower direct charges to
the customer than WMI) and some large commercial and industrial companies not
primarily involved in the solid waste management services business. CWM
encounters competition from a number of sources, including several national or
regional firms specializing primarily in chemical waste management, local waste
management concerns and, to a much greater extent, generators of chemical
wastes which seek to reduce the volume of or otherwise process and dispose of
such wastes themselves. The service industries in which Rust competes are
highly competitive. Rust encounters intense competition, primarily in pricing,
quality and reliability of services, from various sources in all aspects of its
engineering, construction, environmental and infrastructure consulting,
hazardous substance remediation, and on-site industrial and related services
operations. WTI experiences substantial competition in all aspects of its
business. It competes with a large number of firms, both nationally and
internationally, some of which may have substantially greater financial and
technical resources than WTI. Competing for selection as a project developer
may require commitment of substantial resources over a long period of time,
without any certainty of being ultimately selected. Competition for attractive
development opportunities is intense, as there are a number of competitors in
the industry interested in such opportunities. Waste Management International
encounters intense competition from local companies and governmental entities
in particular countries, as well as from major international companies.
 
                                       20
<PAGE>
 
  The Company, CWM, Rust, WTI and Waste Management International have entered
into certain non-compete covenants governing the allocation of business
opportunities among them. See "Certain Relationships and Transactions."
 
                   INFORMATION CONCERNING THE SPECIAL MEETING
 
THE SPECIAL MEETING
 
  The Special Meeting is scheduled to be held on Friday, January 20, 1995 at
10:00 a.m., local time, in the Assembly Room of Harris Trust and Savings Bank,
111 West Monroe Street, 8th Floor, Chicago, Illinois. At the Special Meeting,
the holders of CWM Shares will be asked to consider and vote upon approval and
adoption of the Merger Agreement and to transact such other business as may
properly come before the meeting. Information concerning the Special Meeting
and the Merger Agreement is set forth below.
 
RECORD DATE; QUORUM; OUTSTANDING CWM SHARES ENTITLED TO VOTE
 
  The Record Date for the Special Meeting has been fixed as the close of
business on December 7, 1994. Only holders of record of CWM Shares on the
Record Date are entitled to notice of and to vote at the Special Meeting.
Holders of CWM Shares on the Record Date are entitled to one vote for each CWM
Share held on matters properly presented at the Special Meeting. A
stockholders' list will be available for examination by holders of CWM Shares
at the Special Meeting and at CWM's corporate offices for the 10 days preceding
such meeting.
 
  At the close of business on the Record Date, there were 209,143,793 CWM
Shares issued and outstanding held of record by 5,718 registered holders. The
holders of a majority of the CWM Shares entitled to vote who are present in
person or represented by proxy will constitute a quorum for the transaction of
business at the Special Meeting. The Company's approximately 78.6% ownership of
the outstanding CWM Shares will be sufficient to create a quorum at the Special
Meeting.
 
VOTE REQUIRED; CERTAIN CWM SHARES VOTING IN FAVOR OF THE MERGER
 
  Pursuant to the DGCL, the Merger Agreement must be approved and adopted by
the affirmative vote of the holders of a majority of the outstanding CWM Shares
(the "DGCL Vote Requirement"). The Company has agreed to vote its CWM Shares
for approval and adoption of the Merger Agreement. As of the Record Date, the
Company was the owner of 164,278,417 CWM Shares (approximately 78.6% of the
outstanding CWM Shares). HOWEVER, AS SPECIFIED IN THE MERGER AGREEMENT, IT IS A
CONDITION TO CONSUMMATION OF THE MERGER THAT THE MERGER AGREEMENT BE APPROVED
AND ADOPTED AT THE SPECIAL MEETING BY THE HOLDERS OF A MAJORITY OF THE CWM
SHARES WHICH ARE REPRESENTED AND ENTITLED TO VOTE AT THE SPECIAL MEETING AND
NOT DIRECTLY OR INDIRECTLY OWNED BY THE COMPANY (THE "INDEPENDENT VOTE
REQUIREMENT"). The Merger is also subject to other conditions. See "The Merger
Agreement--Conditions."
 
  Failure to return an executed proxy card or to vote in person at the Special
Meeting or voting to abstain will constitute, in effect, a vote against
approval and adoption of the Merger Agreement for purposes of the DGCL Vote
Requirement. CWM Shares not represented in person or by proxy at the Special
Meeting will not be counted for purposes of determining whether or not the
Independent Vote Requirement has been satisfied. Failure to return an executed
proxy card or to vote in person at the Special Meeting will not affect the
Independent Vote Requirement, but voting to abstain will, in effect, constitute
a vote against approval and adoption of the Merger Agreement for purposes of
the Independent Vote Requirement.
 
                                       21
<PAGE>
 
ACTION TO BE TAKEN UNDER THE PROXY
 
  All proxies in the enclosed form that are properly executed and returned to
CWM's transfer agent, Harris Trust and Savings Bank, on or before the date of
the Special Meeting, and not revoked, will be voted at the Special Meeting or
any adjournments or postponements thereof in accordance with any instructions
thereon, or, if no instructions are provided, will be voted FOR adoption and
approval of the Merger Agreement. Any stockholder who has given a proxy
pursuant to this solicitation may revoke it by attending the Special Meeting
and giving oral notice of his or her intention to vote in person, without
compliance with any other formalities. In addition, any proxy given pursuant to
this solicitation may be revoked prior to the Special Meeting by delivering to
the Secretary of CWM an instrument revoking it or a duly executed proxy bearing
a later date.
 
  Management of CWM does not know of any matters other than those set forth
herein which may come before the Special Meeting. If any other matters are
properly presented to the Special Meeting for action, it is intended that the
persons named in the enclosed form of proxy and acting thereunder will vote in
accordance with their best judgment on such matters. Such matters could include
an adjournment or postponement of the Special Meeting from time to time in the
event the CWM Board of Directors or the Special Committee determines that
holders of CWM Shares have not had sufficient time to consider the Merger
Agreement. If any such determination is made, additional proxies may be
solicited during such adjournment period.
 
ACCOUNTING TREATMENT
 
  The Company will treat the Merger as a purchase of the approximately 21.4%
minority interest in CWM.
 
PROXY SOLICITATION
 
  The expense of preparing and mailing this Proxy Statement-Prospectus and the
proxies solicited hereby will be borne by CWM. The expense of printing this
Proxy Statement-Prospectus will be borne equally by the Company and CWM. In
addition to the use of the mails, proxies may be solicited by officers and
directors and regular employees of CWM, without additional remuneration, by
personal interviews, written communication, telephone, telegraph or facsimile
transmission. CWM will also request brokerage firms, nominees, custodians and
fiduciaries to forward proxy materials to the beneficial owners of CWM Shares
held of record and will provide reimbursement for the cost of forwarding the
material in accordance with customary charges. CWM has hired Morrow & Co., Inc.
to coordinate the solicitation of such proxies by and through such holders for
a fee of approximately $6,000 plus expenses.
 
                                SPECIAL FACTORS
 
CERTAIN CONSEQUENCES OF THE MERGER
 
  Pursuant to the Merger Agreement, following approval and adoption of the
Merger Agreement and subject to the fulfillment or waiver of certain
conditions, Merger Sub will be merged with and into CWM, and CWM will continue
as the surviving corporation of the Merger. Upon consummation of the Merger,
CWM will be a wholly owned subsidiary of the Company, market trading of CWM
Shares will cease and CWM will take steps to terminate the registration of CWM
Shares under the Exchange Act. Such termination will cause CWM to no longer be
subject to the reporting requirements of the Exchange Act. The Notes to be
issued to CWM public stockholders in the Merger are described below. See "The
Merger Agreement--Merger Consideration," and "--Exchange and Payment
Procedures" and "Description of Notes." The shares of Merger Sub will be
converted in the Merger into CWM Shares.
 
                                       22
<PAGE>
 
  Although application will be made to list the Notes (and the Company Shares
into which the Notes are convertible) on the NYSE, there can be no assurance
that there will be a sufficient number of holders of Notes, after taking into
account cash payments in lieu of fractional Notes, for an active trading market
for the Notes to develop or be maintained. In the event an active trading
market is not developed or maintained, the liquidity and trading prices of the
Notes could be adversely affected. The Profit Sharing Plan is the holder of
approximately 0.4% of the total outstanding CWM Shares. The Profit Sharing
Plan's CWM Shares will be exchanged in the Merger for the Merger Consideration.
In this connection, the Company has been advised by the Profit Sharing Plan
trustees that such trustees intend to consider the possibility of liquidating
the Profit Sharing Plan's position in the Notes which it will hold upon
consummation of the Merger. See "Securities Ownership--Ownership of CWM
Shares--By the Company, the Profit Sharing Plan and the Company's Directors and
Executive Officers." Such sales of Notes on behalf of the Profit Sharing Plan,
or any market anticipation of such sales, could have an adverse impact on the
market or the market trading prices for the Notes.
 
  The directors of CWM immediately after the Merger will be D. P. Payne,
President of CWM, Jerome D. Girsch, Executive Vice President, Chief Financial
Officer, Treasurer and Controller of CWM, and Brian J. Clarke, Vice President
and General Counsel of CWM. The officers of CWM immediately prior to the
Effective Time will be the officers of CWM as the surviving corporation of the
Merger. The Certificate of Incorporation and By-Laws of Merger Sub immediately
prior to the Effective Time will be the Certificate of Incorporation and By-
Laws of CWM as the surviving corporation of the Merger.
 
CONFLICTS OF INTEREST
 
  Directors and executive officers of CWM (including any person who served as a
director or executive officer of CWM at any time during 1993) beneficially
owned as of October 15, 1994 less than 1% of the outstanding CWM Shares and
approximately 2.7% of the outstanding Company Shares. Directors and executive
officers of the Company (including any person who served as a director or
executive officer of the Company at any time during 1993) owned as of October
15, 1994 approximately 1% of the outstanding CWM Shares and 2.9% of the
outstanding Company Shares. All CWM Shares held by such directors and executive
officers at the Effective Time will upon consummation of the Merger, along with
all other publicly held CWM Shares (other than Dissenting Shares), be converted
into the right to receive the Merger Consideration. The Company and CWM believe
that it is the present intention of their respective directors and executive
officers who own CWM Shares, and of the trustees of the Profit Sharing Plan, to
vote all CWM Shares as to which they possess voting power for approval and
adoption of the Merger Agreement. See "Securities Ownership--Ownership of CWM
Shares" and "Securities Ownership--Ownership of Company Shares."
 
  Dean L. Buntrock, Phillip B. Rooney, Donald F. Flynn, Peer Pedersen and Peter
H. Huizenga, all of whom currently serve on the Board of Directors of CWM, are
also directors of the Company. In addition, James E. Koenig, a director of CWM,
serves as Senior Vice President, Chief Financial Officer and Treasurer of the
Company, and D. P. Payne and Jerome D. Girsch, each a director of CWM, are
President and Executive Vice President, Chief Financial Officer, Controller and
Treasurer, respectively, of CWM.
 
BACKGROUND OF THE MERGER
 
 Events Prior to Formulation of the Initial Merger Proposal
 
  During the late spring and early summer of 1993, the management of CWM became
concerned about conditions prevailing in the hazardous waste management
industry. Management believed that CWM's earnings from hazardous waste
management operations in 1993 were being adversely affected by the lingering
effect of the economic recession in the United States on CWM's customers, and
that there were also a number of changes in the hazardous waste services
industry at work. Management believed that these changes were
 
                                       23
<PAGE>
 
contributing to both a decline in waste volumes from environmental clean-up
projects which generate hazardous waste for off-site treatment and disposal at
CWM's facilities and softness in the commercial hazardous waste incineration
market. It appeared to CWM's management that the pace of adoption of key
environmental regulations, which fueled much of the hazardous waste services
industry's growth during the 1980's, was substantially reduced and that
incremental demand for hazardous waste disposal services was no longer being
significantly created by such regulations. It also appeared that demand was
being adversely affected by uncertainty about the federal government's
regulatory direction concerning hazardous waste management and environmental
clean-up requirements for industry, and by the efforts of hazardous waste
generators to reduce hazardous waste output and manage hazardous wastes on
site.
 
  Because they did not foresee any near-term abatement of these conditions,
CWM's management made the decision, announced in July 1993, (i) to review
possible alternatives to the configuration of CWM's network of treatment and
disposal facilities, and (ii) to review whether certain assets relating to
CWM's hazardous waste incineration services were appropriately valued. This
review was completed by the end of September 1993, at which time CWM announced
that it would record a special asset revaluation and restructuring charge of
$363 million (after tax), relating primarily to a revaluation of CWM's thermal
treatment businesses, and that it would undertake a strategic reconfiguration
of CWM's operations to meet the then-current levels of market demand. CWM's
restructuring plans included eliminating approximately 1,200 positions,
consolidating and restructuring certain operations and administrative
functions, selling certain service centers, and seeking joint venture partners
and reviewing other strategic alternatives for its Port Arthur, Texas
incinerator.
 
  These same concerns about the future of the hazardous waste industry caused
the management of the Company to consider briefly during the summer of 1993
whether or not it would be beneficial to seek to combine CWM with one or more
of the Company's other business units or to engage in some other transaction,
including the possible acquisition by the Company of the CWM Shares held by the
public stockholders. Management consideration of these possibilities was
discontinued in September 1993, primarily as a result of three developments.
First, the management of CWM completed the CWM asset revaluation and
restructuring described above, and it was believed that the decisions made in
that process would help to improve CWM's prospects. Second, the Company's
management was also aware of the possibility that conditions in the hazardous
waste services industry had not yet stabilized, which meant that any attempt to
value CWM for the purpose of a business combination would have been very
difficult. Third, the Company's management did not wish to impede efforts to
explore other strategic alternatives, including the possibility of combining
all or parts of the hazardous waste operations of a third party with those of
CWM. In this regard, CWM discussed the possibility of a joint venture with a
third party in the fall of 1993 and again in the spring of 1994, but the
discussions were terminated without any agreement in principle as to the
structure, terms or other aspects of such a combination.
 
  The adverse business conditions affecting the hazardous waste industry
continued into 1994, and commencing in the late spring of 1994, the managements
of CWM and the Company intensified their focus on further possible actions to
be taken. The managements were aware by May 1994 that, despite the substantial
reduction in costs which CWM had begun to realize as a consequence of the CWM
restructuring and asset revaluation in the third quarter of 1993, and despite
CWM management's ongoing efforts to further
reduce costs and maintain revenues, CWM's overall results and prospects had
continued to deteriorate. In early June 1994, Dean L. Buntrock, Chairman of the
Company, James E. Koenig, Senior Vice President, Chief Financial Officer and
Treasurer of the Company, Herbert A. Getz, Vice President, General Counsel and
Secretary of the Company, D. P. Payne, President of CWM, and Jerome D. Girsch,
Executive Vice President, Chief Financial Officer, Controller and Treasurer of
CWM, toured several of CWM's key operating sites. After these visits and after
reviewing CWM's situation in detail, the managements of CWM and the Company
concluded that further restructuring and cost savings were needed for CWM. They
also determined that additional cost savings could be realized if CWM were
wholly owned by the Company and certain CWM functions were more closely
integrated with those of the Company or WMI.
 
                                       24
<PAGE>
 
 Development of and Reasons for the Merger Proposal
 
  With these views in mind, the managements of the Company and CWM during late
June and July 1994 formulated a merger proposal (the "Initial Merger Proposal")
in which CWM Shares held by public stockholders of CWM would be converted into
Company Shares on the basis of the relative closing stock prices on the day of
the public announcement of the proposed transaction (which resulted in an
initial proposed exchange ratio of .27 of a Company Share for each public CWM
Share for an implied value per CWM Share of $7.86 based on the closing price
per Company Share on such date). The managements of CWM and the Company
believed that the transaction contemplated by the Initial Merger Proposal would
produce benefits for both parties and would lead to an improved long-term
outlook for CWM. Elimination of CWM's publicly-traded status alone was expected
to produce approximately $1.5 to $2 million in direct annual cost savings,
which would be in addition to the elimination of a substantial time commitment
by senior management of both CWM and the Company to the separate activities of
the CWM Board of Directors and its Committees. In addition, the combination of
the two companies would provide the Company with substantial flexibility to
further reduce CWM's corporate and regional selling, general and administrative
costs through the integration of certain of those functions with Company or WMI
functions.
 
  At the operations level, the Company's management believed that the proposed
transaction would provide several opportunities to lower costs at both CWM and
WMI through integration of certain CWM functions (such as transportation and
equipment maintenance) with those of WMI, creation of opportunities for CWM and
WMI to share equipment, personnel and facilities (such as the construction of
non-hazardous waste disposal facilities at CWM sites or conversion of certain
CWM sites to non-hazardous waste disposal facilities), and better coordination
of certain activities (such as non-hazardous "special" waste marketing).
 
  The Company's management also believed that the combination of CWM with the
Company would simplify the structure and the decision-making process of the
Company's overall domestic waste disposal operations.
 
 Review of the Merger Proposals
 
  On July 28, 1994, the Initial Merger Proposal was presented to the Company's
Board of Directors. At that meeting, the Company's Board of Directors reviewed
the Initial Merger Proposal and then authorized the Company's management to
present the Initial Merger Proposal to CWM and to negotiate with CWM over the
terms of the transaction contemplated thereby, subject to final approval by the
Company's Board. On the same day, CWM's management presented and explained the
Initial Merger Proposal to the CWM Board of Directors, which then appointed Kay
Hahn Harrell and James B. Edwards as the members of the Special Committee
created to review, evaluate and negotiate with respect to the terms of the
proposal and to consider alternatives to it. The CWM Board of Directors also
authorized the Special Committee to retain independent legal counsel and
financial advisors, at CWM's expense, in connection therewith. Following the
Board and Special Committee meetings on July 28, the Initial Merger Proposal
was publicly announced. Neither Ms. Harrell nor Dr. Edwards has ever been
employed by the Company or CWM. Ms. Harrell is a party to a Consulting
Agreement with CWM, originally entered into as of May 1, 1993 for a one-year
term and renewed for a second one-year term as of May 1, 1994, whereby CWM
agreed to pay Ms. Harrell a fee
of $60,000 per year for consulting services, principally in the areas of
investor relations, financial and investment analysis and strategic planning,
which Ms. Harrell agreed to provide. The agreement also provides for CWM's
reimbursement of reasonable expenses incurred by Ms. Harrell in providing such
services. Information concerning CWM's compensation to Ms. Harrell and Dr.
Edwards for their services as directors is incorporated by reference to CWM's
1993 Annual Report on Form 10-K.
 
  At the Special Committee's first meeting on July 28, 1994, the Special
Committee elected Ms. Harrell as Chairperson of the Special Committee, retained
the law firm of Skadden, Arps, Slate, Meagher and Flom ("Skadden Arps") as
legal counsel to the Special Committee and determined to retain an investment
banking
 
                                       25
<PAGE>
 
firm to act as financial advisor to the Special Committee. On August 9, 1994,
the Special Committee interviewed several investment banking firms (including
CS First Boston) and, on August 12, 1994, retained CS First Boston as financial
advisor to the Special Committee. Skadden Arps and CS First Boston were
retained solely to represent the Special Committee in its consideration of the
Company's proposal and alternatives to such proposal on behalf of the
stockholders of CWM other than the Company.
 
  Following such meetings, the Special Committee, with the assistance of its
advisors, began the process of evaluating the Initial Merger Proposal. From
August 29 to September 5, representatives of CS First Boston held due diligence
meetings with senior management of the Company, CWM and their respective
affiliates, including WMI, WTI, Rust and Waste Management International,
regarding the Initial Merger Proposal and the business, financial condition and
prospects of each of the companies. At a meeting on September 9, 1994, the
Special Committee reviewed and discussed with its advisors CS First Boston's
preliminary evaluation of the Initial Merger Proposal from a financial point of
view, the preliminary due diligence that CS First Boston had conducted to date,
including its discussions with senior management of the Company, CWM and their
respective affiliates, and the additional due diligence to be conducted by CS
First Boston.

  CS First Boston informed the Special Committee that, as of such date, the
aggregate range of implied exchange ratios derived by CS First Boston in
connection with its preliminary evaluation was .17 to .49, with a midpoint of
.33 (which range equated to an implied equity valuation reference range for
each CWM Share of $5.00 to $14.40 based on the closing price per Company Share
on September 6, 1994). In addition, CS First Boston noted that because the
exchange ratio proposed by the Company was based on the relative closing prices
for CWM Shares and the Company Shares on July 28, 1994, the date of
announcement of the Initial Merger Proposal, the implied price for the CWM
Shares based on the proposed exchange ratio did not represent a premium to the
closing market price of CWM Shares on the announcement date. CS First Boston
advised the Special Committee that offer prices for recent minority buy-out
transactions commonly had been set at premiums over the target company share
price prior to announcement of the merger proposal. The Special Committee also
discussed with CS First Boston the recent trading history of the CWM Shares and
the Company Shares, noting that the closing price for CWM Shares on July 28,
1994 was nearly its lowest closing price over the prior year. In connection
with that discussion, CS First Boston noted that recent trading ranges for CWM
Shares and the Company Shares yielded exchange ratios significantly higher than
.27. CS First Boston's views were based on the results of preliminary due
diligence and information relating to CWM and the Company, were discussed with
the Special Committee for purposes of providing a framework in which to conduct
negotiations with the Company, and were not intended to be, and were not,
relied upon by the Special Committee in connection with its approval of the
proposed Merger or by CS First Boston in connection with its evaluation, from a
financial point of view, of the Merger Consideration.  

  The Special Committee and its advisors then discussed the outlook for the
hazardous waste industry, CWM's hazardous waste business, Rust's businesses in
its key markets and the Company's core solid waste business. The Special
Committee also discussed with its advisors possible alternative structures for
the proposed transaction, strategies to obtain the best price for the public
stockholders in the transaction and whether it should explore strategic
alternatives. The representatives of CS First Boston informed the Special
Committee that they needed to obtain further information from representatives
of the Company and CWM relating to, among other things, management's estimates
of potential cost savings, and that they would be available to update the
Special Committee as to the progress of their review of such information with
such representatives by September 14, 1994.  

  At a telephonic Special Committee meeting held on September 14, 1994, CS
First Boston provided an update as to the additional due diligence that it had
performed. CS First Boston was not asked to, and did not, express an opinion as
to the fairness of the Initial Merger Proposal from a financial point of view
to the public stockholders of CWM. The Special Committee reviewed CS First
Boston's preliminary evaluation of the financial aspects of the Initial Merger
Proposal, which was discussed with the Special Committee on September 9, 1994
with a view toward identifying negotiating approaches through which the Initial
Merger Proposal could be improved. The Special Committee and its advisors
discussed possible modifications to improve the Initial Merger Proposal,
including, among other things, increasing the proposed exchange ratio  
 
                                       26
<PAGE>
 
and calculating the exchange ratio based on the market price of Company Shares
over several trading days prior to closing in order to protect CWM public
stockholders in the event that the market price of Company Shares should
decrease between the date that the parties agreed to the terms of the proposed
merger and the closing of the transaction. After discussion, the Special
Committee authorized CS First Boston and Skadden Arps to meet with
representatives of the Company to negotiate certain modifications to the
Initial Merger Proposal and, in connection with such negotiations, to propose
an increase in the exchange ratio to .42, since such exchange ratio was the
highest exchange ratio that the Special Committee believed reasonably could be
justified.  

  On September 16, 1994, Messrs. Koenig and Getz and Thomas A. Witt, Vice
President and Associate General Counsel of the Company and the Secretary of
CWM, met with representatives of CS First Boston and Skadden Arps. CS First
Boston discussed with the Company's representatives the Special Committee's
view of the Initial Merger Proposal and reported the Special Committee's desire
for certain modifications thereto, including, among other things, an increase
in the exchange ratio to .42 of a Company Share for each public CWM Share,
which would increase the value of the consideration to be received by CWM
public stockholders to $11.75 per CWM Share in the proposed merger (based on
the closing price of Company Shares on September 12, 1994), and to have the
number of Company Shares to be issued in the proposed merger determined
(subject to certain minimum and maximum limits on the number of Company Shares
that would be issued to the CWM public stockholders in the transaction) by
reference to the market price of Company Shares over the several days preceding
the Special Meeting, rather than the Company Share price on July 28, 1994, the
day of announcement of the Initial Merger Proposal. Mr. Koenig indicated to the
CS First Boston representatives a number of matters which he believed warranted
further investigation and reconsideration, principally the estimates of the
cost savings which might be realized as a result of measures being implemented
by CWM management and as a consequence of the combination of CWM with the
Company, and certain assumptions regarding CWM's expected revenues, cash flows
and earnings for 1995 and subsequent years.  

  After further meetings and discussions regarding possible cost savings and
other financial matters with CWM's management, on September 21, 1994, the
Special Committee's legal and financial advisors discussed the cost savings
which CWM management believed were potentially achievable with Messrs. Koenig
and Witt and John Repke, Manager of Financial Services of the Company. On
September 22, 1994, at a telephonic meeting of the Special Committee,
representatives of CS First Boston and Skadden Arps provided an update to the
Special Committee as to their meetings with representatives of the Company and
CWM's management. CS First Boston also provided an update as to the revised
estimates of potentially achievable cost savings (related primarily to revised
estimates of labor force reductions) and the benefits to be obtained from
retention of certain non-hazardous special waste volumes, which had been
revised downward based on CS First Boston's discussions with CWM's management.
Again, CS First Boston was not asked to, and did not, express an opinion as to
the fairness of the Initial Merger Proposal from a financial point of view to
the public stockholders of CWM. At the conclusion of the meeting, the Special
Committee directed its advisors to initiate further discussions with the
Company in order to seek to improve the terms of the Initial Merger Proposal.
On September 23, 1994, Messrs. Koenig, Getz and Witt again met with
representatives of CS First Boston and Skadden Arps to discuss the Initial
Merger Proposal and the appropriate terms of the proposed merger. At such
meeting, Mr. Koenig stated that he would be willing to recommend to the
Company's Board of Directors that the value to be ascribed to each public CWM
Share for purposes of the transaction be raised to $8.60. The Special
Committee's legal and financial advisors continued to advocate a higher value.

  On September 26, 1994, Ms. Harrell, accompanied by representatives of CS
First Boston and Skadden Arps, met with Messrs. Koenig, Getz and Witt, with Dr.
Edwards participating in the meeting by telephone, in order to explore further
the appropriate terms of the proposed merger. During this meeting, Dr. Edwards
indicated his belief that unless the value to be ascribed to each public CWM
Share for purposes of the transaction were to be increased, the merger was
unlikely to be approved by the CWM public stockholders at the Special Meeting.
Following this discussion, Ms. Harrell and representatives of CS First Boston
and  
 
                                       27
<PAGE>
 
Skadden Arps met separately with CWM's management to further review CWM's
business prospects and CS First Boston's analysis. After these meetings, Ms.
Harrell and Mr. Koenig, accompanied by their respective advisors, met again,
and Mr. Koenig indicated his willingness to recommend to the Company's Board of
Directors that a value of $8.75 be ascribed to each CWM Share in the proposed
merger. On the evening of September 26, 1994, the Special Committee held a
telephonic meeting with its advisors to review the matters discussed that day
with the Company's management.
 
  On September 28, 1994, Messrs. Koenig, Getz and Witt participated in a
telephone conference call with representatives of CS First Boston and Skadden
Arps to further discuss the terms of the proposed transaction. During the call,
the Special Committee's legal and financial advisors indicated that the
negotiations between the Company and the Special Committee appeared to have
reached an impasse and that the Special Committee was considering a temporary
suspension of further discussions in order to evaluate further the terms of the
proposed transaction. In this context, they also requested that Mr. Koenig
present the Company's best offer. In a subsequent telephone call that day, Mr.
Koenig advised the representatives of CS First Boston and Skadden Arps that in
his view the Company's best offer would be to ascribe a value of $8.85 to each
CWM Share in the proposed merger, and he requested that this information be
conveyed to the Special Committee. The Special Committee reviewed the Company's
suggested revised terms of the proposed merger with its financial and legal
advisors and decided that it should continue to seek to improve the terms of
the proposed transaction.
 
  Mr. Koenig and Ms. Harrell exchanged telephone calls on September 28 and
September 29 and discussed generally the desirability of finding a way to
bridge the gap between the respective positions of the Company and the Special
Committee. During these discussions, Mr. Koenig raised and discussed with Ms.
Harrell the possibility of the Company's issuing a non-interest bearing,
subordinated, convertible debt security as an alternative form of merger
consideration. The Special Committee held several discussions with its advisors
on September 28 and September 29 regarding the possibility of pursuing
alternative forms of consideration in the transaction, and determined to
explore such a debt security in order to improve the value of the consideration
to be received by CWM public stockholders in the transaction. Following these
discussions, on September 29, representatives of CS First Boston and Skadden
Arps notified Messrs. Koenig, Getz and Witt that the Special Committee had
instructed them to explore one or more possible alternative forms of merger
consideration, including such debt securities. Mr. Koenig indicated that the
Company would be willing to consider the issuance of such debt securities and
requested a more specific proposal regarding the terms of the debt securities.
 
  On September 30, CS First Boston submitted a proposal to the Company on
behalf of the Special Committee providing for the conversion of CWM Shares held
by the public stockholders into non-interest bearing, convertible, subordinated
10-year notes of the Company (the "Revised Merger Proposal"). Over the next
several days, Ms. Harrell, Dr. Edwards, representatives of CS First Boston and
Skadden Arps, Messrs. Getz, Witt and Repke, Thomas C. Hau, Vice President and
Controller of the Company, Bruce D. Tobecksen, Vice President-Finance of the
Company, and Gary M. Koche, Assistant Manager-Financial Services of the
Company, conferred by telephone on numerous occasions to discuss the Revised
Merger Proposal and several alternative terms of the proposed notes and their
appropriate valuation. The discussions and negotiations relating to the
possible terms of the proposed notes focused principally on the number of CWM
Shares that would be converted into each note, the stated yield and whether the
notes would have a cash interest payment feature (and, if so, the interest
rate), the number of Company Shares into which each note would be convertible
(and whether such number would be fixed or would be determined on the Effective
Date in reference to the market value of the Company Shares during some period
of trading days immediately prior to the Effective Date), the dates on which
the proposed notes would be redeemable by the Company at the Company's option
and the dates on which the proposed notes would be redeemable at the option of
the Holder. The Company also consulted with Merrill Lynch, Pierce, Fenner &
Smith Incorporated ("Merrill Lynch") in connection with the Company's
evaluation of the terms of the notes. Merrill Lynch's principal function was to
render technical assistance to the Company relating to the application of
financial models to
 
                                       28
<PAGE>
 
determine the theoretical value of the notes based on various assumptions about
yield, interest rates, call protection, the volatility of Company Shares and
similar factors. During this period, representatives of CS First Boston and
Merrill Lynch conferred several times to discuss such matters. In discussions
with the Company's representatives, the Special Committee and its advisors
continued to press for a higher value to be attributed to the CWM Shares and
proposed several features of the notes to improve their value for the public
stockholders, including a cash interest payment feature, longer protection from
redemption by the Company and more than one opportunity to have notes
repurchased by the Company at the option of the holder. The Company's
representatives declined to increase the value to be attributed by the Company
to the CWM Shares in the proposed merger above $8.85 for purposes of
determining the ratio for conversion of notes into Company Shares, but
indicated their willingness to consider these additional terms. The Company
subsequently agreed to include a cash interest payment feature at a rate of 2%
per annum of the principal amount at maturity of the proposed notes, to extend
the call protection from three years to five years after the date of issuance
of the proposed notes and to purchase the notes at the Holders' option both
three and five years after the date of issuance of the proposed notes rather
than only after three years as the Company had initially suggested.
 
  From September 30 through October 11, the Special Committee held several
telephonic meetings and various other discussions with its advisors regarding
the terms of the Revised Merger Proposal. At such meetings, representatives of
CS First Boston and Skadden Arps reviewed with the Special Committee the terms
and provisions of the notes proposed to be issued by the Company in the Revised
Merger Proposal and the discussions and negotiations with the Company with
respect thereto. CS First Boston also reviewed with the Special Committee its
preliminary valuation analysis of such notes. On October 11, after several
telephone discussions between the Special Committee members, together with the
CS First Boston and Skadden Arps representatives, and various Company
representatives, an agreement in principle was reached whereby the Notes,
having the material terms specified in the section of this Proxy Statement-
Prospectus entitled "Description of Notes," would be issued in the transaction
to the CWM public stockholders (the "Final Merger Proposal"). At a telephonic
meeting of the Special Committee on October 14, 1994, CS First Boston made a
presentation of its financial analyses and rendered its oral opinion,
subsequently confirmed in writing, to the Special Committee to the effect that,
as of such date, the consideration to be received in the Merger by the holders
of CWM Shares (other than the Company and its affiliates) was fair to such
holders from a financial point of view. See "--Opinion of CWM's Financial
Advisor."
 
RECOMMENDATION OF THE SPECIAL COMMITTEE AND THE BOARD OF DIRECTORS OF CWM;
FAIRNESS OF THE MERGER
 
  At the Special Committee meeting held on October 14, 1994, the Special
Committee unanimously determined that the Merger was fair to, and in the best
interests of, CWM and its public stockholders, unanimously approved the Merger
and the Merger Agreement and unanimously determined to recommend that the Board
of Directors of CWM approve the Merger and the Merger Agreement. Thereafter,
based on the recommendation of the Special Committee, the Board of Directors of
CWM (including the directors of CWM who are not employees of CWM) unanimously
determined that the terms of the Merger were fair to, and in the best interests
of, the public stockholders of CWM, approved the Merger and the Merger
Agreement and determined to recommend to the stockholders of CWM that they vote
for approval and adoption the Merger Agreement.
 
  THE BOARD OF DIRECTORS OF CWM RECOMMENDS THAT THE STOCKHOLDERS OF CWM VOTE
FOR APPROVAL AND ADOPTION OF THE MERGER AGREEMENT. However, stockholders of CWM
should be aware that a majority of the 10 members of the Board of Directors of
CWM have conflicts of interest in connection with the Merger. Five of such
directors of CWM are currently also members of the Board of Directors of the
Company, and one additional CWM director is also an officer of the Company. Two
CWM directors are also officers of CWM. See "Special Factors--Conflicts of
Interest" and "Certain Relationships and Transactions."
 
                                       29
<PAGE>
 
 Reasons for the Special Committee's Recommendation
 
  In determining to recommend that the Board of Directors of CWM approve the
Merger and the Merger Agreement, and in determining the fairness of the terms
of the Merger, the Special Committee considered the factors described below.
 
  (i) Business, condition and prospects of CWM and the Company. In evaluating
the terms of the Merger, the Special Committee considered the financial
condition, assets, results of operations, business and prospects of CWM and the
Company and their affiliates, the risks involved in achieving those prospects
and the general condition and outlook of the hazardous waste industry and the
solid waste and other industries in which the Company participates. The Special
Committee members reviewed these matters with representatives of CS First
Boston who had conducted a due diligence review of CWM, the Company and their
affiliates. The Special Committee noted that the outlook for the hazardous
waste industry is uncertain and that the negative industry trends could cause
CWM's business and prospects to further deteriorate.
 
  (ii) Financial Analyses and Opinion of CS First Boston. The Special Committee
considered the financial analyses of CS First Boston and the opinion of CS
First Boston to the effect that, as of the date of such opinion, the
consideration to be received in the Merger by the holders of CWM Shares (other
than the Company and its affiliates) was fair to such holders from a financial
point of view. See "--Opinion of CWM's Financial Advisor" for a description of
the financial analyses undertaken by CS First Boston.
 
  (iii) Historical and Recent Market Prices. The Special Committee considered
the trading history of Company Shares and CWM Shares, including trading prices
for periods up to one year prior to the announcement of the Initial Merger
Proposal. The Special Committee members noted that the Merger presented the
public stockholders of CWM with an opportunity to receive Notes which would
represent a premium for their shares over recent and current market prices for
CWM Shares, and that such a premium was consistent with premiums paid in recent
similar transactions reviewed by CS First Boston. See "--Opinion of CWM's
Financial Advisor--CWM Shares--Analysis of Selected Minority Buy-outs" and "--
The Notes."
 
  (iv) Valuation of the Notes and Terms of the Notes. The Special Committee
considered the fact that, based on the assumptions in its analysis, CS First
Boston valued the Notes, on a fully distributed basis, at $9.50 to $10.00 per
CWM Share. See "Opinion of CWM's Financial Advisor--The Notes." The Special
Committee also considered the terms of the Notes. The Special Committee members
took into account the fact that the Notes are immediately convertible into
Company Shares upon consummation of the Merger, and the fact that the
conversion ratio will provide the CWM public stockholders, upon conversion,
with more Company Shares per CWM Share than they would have received pursuant
to the Initial Merger Proposal. In addition, the Special Committee members
noted that the conversion ratio was based on an implied value of $8.85 per CWM
Share, which was equivalent to the maximum implied value of CWM Shares that the
Company had indicated it was willing to consider in a transaction structured as
a stock-for-stock exchange. The Special Committee members also took into
account the fact that the Company will pay in cash a semi-annual interest
payment of 2% per annum of the $1,000 principal amount at maturity of the Notes
and that the Notes are expected to be issued at a discount. The Special
Committee also noted that the Company will be required to purchase the Notes
for cash at the holder's option on specified dates approximately three and five
years after the Effective Date in the amount of the Stated Issue Price of
$717.80 per Note plus accrued Stated Discount and accrued but unpaid interest
to such dates and that the Notes have call protection for five years. The
Special Committee also considered the credit rating of the Company as issuer of
the Notes and various factors which could influence the value of the Notes
between October 14, 1994 and the date that the Notes would be issued in the
Merger and thereafter.
 
  (v) Alternatives. The Special Committee considered but decided not to explore
with third parties alternatives to the Initial Merger Proposal and subsequent
proposals. The reasons for not pursuing such alternatives were that (a) the
Company controls CWM and the Special Committee understood from the Company that
retaining control of CWM was important to the Company for a number of reasons,
particularly
 
                                       30
<PAGE>
 
the substantial exposure of the Company as a guarantor of CWM obligations,
including site closure and post-closure obligations, and the strategic
importance to the Company as an environmental services provider of having
access to hazardous waste treatment and disposal capacity and the knowledge and
technology related thereto, (b) the Special Committee did not receive any
unsolicited proposals for the purchase of CWM after the Initial Merger Proposal
was announced, and (c) the Special Committee did not believe any alternatives
were promising in light of the state of the hazardous waste industry and CWM's
core business and its prospects and the Special Committee's understanding of
previous consideration by Company and CWM management of the options available
for CWM. Based on the foregoing factors and after discussions with its
advisors, the Special Committee concluded that it was unlikely that a
solicitation of other bidders would result in an offer to acquire all of CWM or
the interest of the public stockholders at a higher price or on better terms
than pursuant to the Merger and would in any event delay negotiating a
transaction with the Company. The Special Committee also considered the
likelihood of consummating the Merger and the effects on and risks to the CWM
public stockholders of not consummating or delaying the Merger or not accepting
the Company's proposal, and the Special Committee took account of the fact that
the Special Committee can terminate the Merger Agreement under certain
circumstances, including if it materially modifies or changes its
recommendation of the Merger or CS First Boston withdraws or modifies in any
material respect its fairness opinion prior to the Effective Date. See "The
Merger Agreement--Conditions" and "--Termination; Amendments."
 
  (vi) Independent Negotiations. The Special Committee considered the fact that
the terms of the Merger, including the terms of the Notes, were determined
through arm's-length discussions and negotiations by members of the Special
Committee, with the assistance of CS First Boston and Skadden Arps, and
representatives of the Company and that such discussions and negotiations
resulted in an increase in value to be received by the public stockholders of
CWM in the Merger compared to the value offered in the Initial Merger Proposal.
The Special Committee was of the view that, based on the discussions and
negotiations with representatives of the Company, the terms of the Notes, and
the principal amount at maturity of the Notes to be offered per CWM Share,
reflected the highest price the Company was willing to pay and that any further
negotiations would not result in a higher price and might jeopardize the
possibility of reaching an agreement with the Company.
 
  (vii) The Ability to Obtain an Interest in the Company. The Special Committee
considered the ability of the public stockholders of CWM to obtain an interest
in the ongoing business of the Company and its affiliates and to maintain an
interest in the ongoing business of CWM by converting the Notes into Company
Shares at any time after consummation of the Merger.
 
  (viii) Terms of the Merger Agreement. The Special Committee considered the
terms and conditions of the Merger Agreement, including the amount and form of
the consideration, the nature of the parties' representations, warranties,
covenants and agreements, and the ability of the Special Committee to terminate
the Merger Agreement under certain circumstances. See "The Merger Agreement--
Conditions" and "--Termination; Amendments."
 
  (ix) Independent Vote Requirement. The Special Committee also considered the
fact that a vote of a majority of the publicly held CWM Shares present and
entitled to be voted at the Special Meeting is required to approve the Merger
Agreement.
 
  In light of the number and variety of factors the Special Committee
considered in connection with its evaluation of the Merger, the Special
Committee did not find it practicable to quantify or otherwise assign relative
weights to the foregoing factors, and, accordingly, the Special Committee did
not do so.
 
 Reasons for the Recommendation of the CWM Board of Directors
 
  In determining the fairness of the terms of the Merger, to approve the Merger
and the Merger Agreement and to recommend that the stockholders of CWM approve
the Merger Agreement, the Board of Directors of
 
                                       31
<PAGE>
 
CWM adopted the analysis of the Special Committee with respect to the financial
evaluation of CWM, the Merger Consideration and the merits of the Merger.
 
OPINION OF CWM'S FINANCIAL ADVISOR
 
  CS First Boston was retained by the Special Committee to act as its financial
advisor in connection with the Merger. CS First Boston is an internationally
recognized investment banking firm and was selected by the Special Committee
based on CS First Boston's experience and expertise. As part of its investment
banking business, CS First Boston is regularly engaged in the valuation of
businesses and securities in connection with mergers and acquisitions,
negotiated underwritings, competitive biddings, secondary distributions of
listed and unlisted securities, private placements and valuations for estate,
corporate and other purposes.
 
  In connection with CS First Boston's engagement, the Special Committee
requested that CS First Boston evaluate the fairness, from a financial point of
view, to the holders of CWM Shares (other than the Company and its affiliates)
of the consideration to be received in the Merger by such holders. On October
14, 1994, CS First Boston rendered to the Special Committee its oral opinion,
subsequently confirmed in writing, to the effect that, as of such date, the
consideration to be received in the Merger by the holders of CWM Shares (other
than the Company and its affiliates) was fair to such holders from a financial
point of view.

  In arriving at its opinion, CS First Boston (i) reviewed the Merger Agreement
and certain publicly available business and financial information relating to
CWM, the Company and certain of their affiliates, (ii) reviewed certain other
information, including financial forecasts, provided by CWM, the Company and
certain of their affiliates, (iii) met with the managements of CWM, the Company
and certain of their affiliates to discuss the business and prospects of CWM,
the Company and such affiliates, (iv) evaluated the pro forma financial impact
of the Merger on the Company, (v) considered certain financial and stock market
data of CWM, the Company and certain of their affiliates and compared that data
with similar data for other publicly held companies in businesses similar to
those of CWM, the Company and certain of their affiliates, (vi) considered, to
the extent publicly available, the financial terms of selected purchases of
public minority interests and certain other business combinations recently
effected and (vii) considered such other information, financial studies,
analyses and investigations and financial, economic and market criteria which
CS First Boston deemed relevant, such as annual budgets, strategic plans,
monthly operating reports, estimates of cost savings, headcount analyses,
environmental regulatory information and the nature and magnitude of
litigation.  
 
  In connection with its review, CS First Boston did not assume responsibility
for independent verification of any of the information provided to or otherwise
reviewed by CS First Boston and relied upon its being complete and accurate in
all respects. With respect to financial forecasts and other data reviewed,
including, without limitation, estimates of liability for environmental
matters, reserves established with respect thereto, and estimates of annual
expenses in connection therewith, the respective managements of CWM and the
Company advised CS First Boston that such forecasts and other data were
reasonably prepared on bases reflecting the best currently available estimates
and judgments of the respective managements of CWM, the Company and their
affiliates as to the future financial performance of CWM, the Company and such
affiliates. In addition, CS First Boston did not make an independent evaluation
or appraisal of the assets or liabilities (contingent or otherwise) of CWM, the
Company or their affiliates, nor was CS First Boston furnished with any such
evaluations or appraisals. CS First Boston expressed no opinion as to what the
value of the Notes actually will be when issued to CWM stockholders pursuant to
the Merger or the price at which such Notes or the Company Shares into which
such Notes are convertible will trade subsequent to the Merger. CS First Boston
was not requested to, and did not, solicit third party indications of interest
in acquiring all or any part of CWM. CS First Boston's opinion is necessarily
based on information available to it and financial, stock market and other
conditions and circumstances as they existed and could be evaluated on the date
of
its opinion. Although CS First Boston evaluated the fairness of the
consideration to be received in the Merger by the holders of CWM Shares (other
than the Company and its affiliates) from a financial point of view, CS
 
                                       32
<PAGE>
 
First Boston was not asked to and did not recommend the specific consideration
payable in the Merger. No other limitations were imposed by the Special
Committee on CS First Boston with respect to the investigations made or
procedures followed by CS First Boston.
 
  The full text of CS First Boston's written opinion, dated October 14, 1994,
which sets forth the assumptions made, matters considered and limitations on
the review undertaken, is attached as Appendix B to this Proxy Statement-
Prospectus and is incorporated herein by reference. HOLDERS OF CWM SHARES ARE
URGED TO READ THIS OPINION CAREFULLY IN ITS ENTIRETY. CS First Boston's opinion
is directed only to the fairness of the consideration to be received in the
Merger by the holders of CWM Shares (other than the Company and its affiliates)
from a financial point of view, does not address any other aspect of the Merger
and does not constitute a recommendation to any stockholder as to how such
stockholder should vote at the Special Meeting. The summary of the opinion of
CS First Boston set forth in this Proxy Statement-Prospectus is qualified in
its entirety by reference to the full text of such opinion.

  In preparing its opinion to the Special Committee, CS First Boston performed
a variety of financial and comparative analyses, including those described
below, and provided the Special Committee with a written presentation with
respect to such analyses. A copy of CS First Boston's written presentation to
the Special Committee has been filed as an exhibit to the Schedule 13E-3 filed
by CWM and the Company with the Commission and will be available for inspection
and copying at the principal executive offices of CWM during regular business
hours by any interested stockholder of CWM or representative of such
stockholder who has been so designated in writing. The summary of CS First
Boston's analyses set forth below does not purport to be a complete description
of the analyses underlying CS First Boston's opinion or presentation to the
Special Committee. The preparation of a fairness opinion is a complex analytic
process involving various determinations as to the most appropriate and
relevant methods of financial analyses and the application of those methods to
the particular circumstances and, therefore, such an opinion is not readily
susceptible to summary description. In arriving at its opinion, CS First Boston
did not attribute any particular weight to any analysis or factor considered by
it, but rather made qualitative judgments as to the significance and relevance
of each analysis and factor. Accordingly, CS First Boston believes that its
analyses must be considered as a whole and that selecting portions of its
analyses and factors, without considering all analyses and factors, could
create a misleading or incomplete view of the processes underlying such
analyses and its opinion. In its analyses, CS First Boston made numerous
assumptions with respect to CWM, the Company and their affiliates, industry
performance, general business, economic, market and financial conditions and
other matters, many of which are beyond the control of CWM and the Company. The
estimates contained in such analyses are not necessarily indicative of actual
values or predictive of future results or values, which may be significantly
more or less favorable than those suggested by such analyses. In addition,
analyses relating to the value of businesses or securities do not purport to be
appraisals or to reflect the prices at which businesses or securities actually
may be sold. Accordingly, because such estimates are inherently subject to
substantial uncertainty, none of CWM, the Company, CS First Boston or any other
person assumes responsibility for their accuracy.  
 
 CWM Shares
 
  In analyzing the value of the CWM Shares to be exchanged in the Merger, CS
First Boston (i) analyzed the market prices at which CWM Shares traded in the
six- and twelve-month periods immediately preceding October 11, 1994 and the
implied purchase price premiums over those market prices to be paid to CWM
public stockholders in the Merger, based on CS First Boston's valuation of the
Notes (the "Market Price Premium Analysis"), (ii) analyzed the purchase prices
paid to minority shareholders in selected recent buy-outs of public minority
interests by other companies and the values of CWM Shares implied by the
purchase price premiums paid in those transactions (the "Analysis of Selected
Minority Buy-outs") and (iii) performed
a Comparable Company Analysis, Comparable Transaction Analysis and Discounted
Cash Flow Analysis of the core hazardous waste operations (which operations do
not include those of Rust) of CWM (the "CWM Core Business") and Rust as its
majority affiliate.
 
                                       33
<PAGE>
 
  Market Price Premium Analysis. CS First Boston analyzed the closing prices of
the CWM Shares at certain dates over the six- and twelve-month periods
preceding October 11, 1994 and the implied purchase price premiums of the CWM
Shares as of such dates based on the valuation reference range for the Notes,
on a fully distributed basis, of $9.50 to $10.00. This analysis resulted in a
range of purchase price premiums for CWM Shares of (i) 17% to 23% based on the
$8.125 closing price of CWM Shares one week prior to the announcement of the
Initial Merger Proposal on July 28, 1994, (ii) 23% to 29% based on the $7.75
closing price of CWM Shares as of October 11, 1994 and (iii) (16%) to (11%)
based on the $11.25 high closing price of CWM Shares over the six-month period
immediately prior to October 11, 1994, 27% to 33% based on the $7.50 low
closing price of CWM Shares over such six-month period and 10% to 16% based on
the $8.615 average closing price of CWM Shares over such six-month period. The
implied purchase price premiums derived from the closing prices of the CWM
Shares at certain dates over the twelve-month period preceding October 11, 1994
did not differ significantly from the implied purchase price premiums derived
from the closing prices of CWM Shares over the six-month period described
above.
 
  Analysis of Selected Minority Buy-outs. Using publicly available information,
CS First Boston analyzed the purchase prices and premiums over stock prices at
various dates prior to transaction announcement paid in the following selected
minority buy-out transactions: Intergroup Healthcare Corp./Foundation Health
Corp., Ogden Projects Inc./Ogden Corporation, FoxMeyer Corp./National
Intergroup Inc., Scripps Howard Broadcasting/EW Scripps Co., Holnam
Inc./Holderbank Financiere Gloris Ltd., Medical Marketing Group/Medco
Containment Services, Valley Fashions Inc./Westpoint-Pepperell Inc., PHL Corp.,
Inc./Leucadia National Corp., Frank B. Hall & Co., Inc./Reliance Group Holdings
Inc., Grace Energy Corp./W.R. Grace & Co., Unocal Exploration Corp./Unocal
Corp., Spelling Entertainment Inc./The Charter Company, American Television and
Communications/Time Warner, Arkla Exploration Co./Arkla Inc., Jiffy Lube
International Inc./Pennzoil Acquisition Corp., Country Lakes Food Inc./Land O'
Lakes Inc., Weigh-Tronix Inc./Stavely Industries plc and Metcalf & Eddy
Companies/Air & Water Tech. Corp. (the "Selected Public Minority Buy-out
Transactions"). This analysis resulted in a range of purchase price premiums
paid in Selected Minority Buy-out Transactions of (21%) to 55%, with an average
purchase price premium of 20%. CS First Boston compared the purchase price
premiums paid in the Selected Minority Buy-out Transactions with the implied
purchase price premiums to be paid for CWM Shares in the Merger, based on the
fully distributed valuation reference range for the Notes equivalent to $9.50
to $10.00 per CWM Share. This analysis resulted in a range of purchase price
premiums for CWM Shares of 17% to 23%, with an average purchase price premium
of 20%, based on the $8.125 closing price of CWM Shares one week prior to the
announcement of the Initial Merger Proposal.
 
  Comparable Company Analysis. CS First Boston reviewed and compared certain
actual and estimated financial, operating and stock market information of CWM
and Rust and selected companies in the hazardous waste and engineering and
construction industries. Hazardous waste companies included Clean Harbors Inc.,
Envirosource Inc., Laidlaw Inc., Philip Environmental Inc., Rollins
Environmental Services Inc. and Safety-Kleen Corp. (the "Comparable Hazardous
Waste Companies"). Engineering and construction companies included Dames &
Moore Inc., Fluor Corporation, Foster Wheeler Corporation and Jacobs
Engineering Group Inc. (the "Comparable Engineering and Construction Companies"
and, together with the Comparable Hazardous Waste Companies, the "Comparable
Companies"). CS First Boston compared equity values as a multiple of projected
fiscal 1994 and fiscal 1995 net income, and enterprise values (equity value
plus total debt, preferred stock and minority interest, less cash) as a
multiple of projected fiscal 1994 and fiscal 1995 sales, operating cash flow
and operating income. All multiples were based on closing stock prices as of
October 11, 1994. This analysis resulted in an enterprise valuation reference
range for the CWM Core Business of approximately $1.0 billion to $1.2 billion
and an enterprise valuation range for Rust of approximately $1.3 billion to
$1.45 billion.
 
  Comparable Transaction Analysis. Using publicly available information, CS
First Boston analyzed the purchase prices and multiples paid in selected merger
or acquisition transactions in the hazardous waste and engineering and
construction industries. Transactions in the hazardous waste industry included
Rollins
 
                                       34
<PAGE>
 
Environmental Services Inc./Aptus Inc., Earth Technology Corp. USA/HazWaste
Industries, Philip Environmental Inc./Nortru, Inc., Philip Environmental
Inc./Burlington Environmental, Inc., Republic Waste Industries Inc./Stout
Environmental Inc., Brambles USA/Environmental Systems Co., EnviroSource
Inc./Envirosafe Services (acquisition of partial interest), Severn Trent
plc/Biffa, Shanks & McEwan Group plc/Rechem Environmental Services plc, BUS
Berzelius Umwelt Service/Horsehead Resource Development (acquisition of partial
interest), Clean Harbors Inc./ChemClear Inc., Laidlaw Transport/Laidlaw
Industries and Union Pacific Corp./USPCI, Inc. (the "Selected Hazardous Waste
Transactions"). Transactions in the engineering and construction industry
included Bain Capital/Professional Services Industries Inc., Raytheon Engineers
& Constructors/Ebasco Services Inc., Rust International/The Brand Companies,
Inc., Tilbury Group plc/Robert M. Douglas Holdings plc, JWP Inc./Resource
Recycling Technologies Inc. (acquisition of partial interest), Trafalgar House
plc/Davy Corp. plc, Ogden Corp./ERC Environmental and Energy Services Co.
(acquisition of remaining partial interest), Lyonnaise des Eaux/Dumez S.A.,
Ogden Corp./ ERC International Inc., Thermo Instrument Systems, Inc./Thermo
Environmental Corp., EG&G/Dynatrend, W.R. Grace & Co./Canonie Environmental
Services Corp. (acquisition of partial interest), R-C Acquisition Inc./Research
Cottrell and Dresser Industries/MW Kellog Co. (the "Selected Engineering and
Construction Transactions" and, together with the Selected Hazardous Waste
Transactions, the "Comparable Transactions"). CS First Boston compared purchase
prices as a multiple of latest available 12 months net income and book value,
and adjusted purchase prices (equity purchase price plus net debt assumed) as a
multiple of latest available 12 months sales, operating cash flow and operating
income. This analysis resulted in an enterprise valuation reference range for
the CWM Core Business of approximately $1.2 billion to $1.5 billion and an
enterprise valuation reference range for Rust of approximately $1.5 billion to
$1.8 billion.
 
  Discounted Cash Flow Analysis. CS First Boston performed a discounted cash
flow analysis of the projected unleveraged free cash flow of CWM and Rust for
the fiscal years ended December 31, 1994 through 1999, based upon certain
operating and financial assumptions, forecasts and other information provided
by the respective managements of CWM and Rust. For purposes of such analysis,
CS First Boston utilized discount rates of 10.5% and 11.0% and terminal year
operating income multiples ranging from 13.0x to 13.5x for CWM and discount
rates of 12.5% to 13.0% and terminal year operating income multiples of 11.5x
to 12.5x for Rust. This analysis resulted in an enterprise valuation reference
range for the CWM Core Business of approximately $1.5 billion to $1.6 billion
and an enterprise valuation reference range for Rust of approximately $1.7
billion to $1.85 billion. CS First Boston also performed a discounted cash flow
analysis of the potential cost savings which would result from further
integrating the operations of CWM and the Company for the fiscal years ended
December 1995 through 1997, based on certain operating and financial
assumptions, forecasts and other information provided by the management of CWM.
CS First Boston utilized the same discount rates and terminal year operating
income multiples for this analysis as it did for its analysis of the projected
unleveraged free cash flow of CWM described above. This analysis resulted in a
valuation range of incremental cost savings resulting from the Merger of
approximately $30 million to $160 million.
 
  The Comparable Company Analysis, Comparable Transaction Analysis and
Discounted Cash Flow Analysis for CWM resulted in aggregate enterprise and
equity valuation reference ranges for CWM of approximately $3.2 billion to $3.9
billion and $1.2 billion to $1.8 billion, respectively. The Special Committee
recognized that such valuation reference ranges reflected the negative industry
trends and the uncertain outlook for the hazardous waste industry. The Special
Committee noted that improvements in the future prospects for the hazardous
waste industry and realization of greater incremental cost savings than those
estimated (as set forth in the preceding paragraph) would have a positive
effect on the value of CWM.
 
 Company Shares
 
  In analyzing the value of the Company Shares into which the Notes are
convertible, CS First Boston performed a Comparable Company Analysis,
Comparable Transaction Analysis and Discounted Cash Flow
Analysis of WMI, the Company's wholly owned subsidiary engaged in the solid
waste management business. CS First Boston also considered the values derived
for CWM and Rust described above under "--CWM Shares" and the market values of
the Company's other majority-owned affiliates, WTI and Waste Management
International.
 
                                       35
<PAGE>
 
  Comparable Company Analysis. CS First Boston reviewed and compared certain
actual and estimated financial, operating and stock market information of WMI
and the following selected companies in the solid waste industry: Attwoods plc,
Browning Ferris Industries Inc., Chambers Development Company Inc., Laidlaw
Inc., Mid-American Waste Systems Inc. and Western Waste Industries (the
"Comparable Solid Waste Companies"). CS First Boston compared equity values as
a multiple of projected fiscal 1994 and fiscal 1995 net income, and enterprise
values (equity value plus total debt, preferred stock and minority interest,
less cash) as a multiple of projected fiscal 1994 and fiscal 1995 sales,
operating cash flow and operating income. All multiples were based on closing
stock prices as of October 11, 1994. This analysis resulted in an enterprise
valuation reference range for WMI of approximately $12.0 billion to $14.0
billion.
 
  Comparable Transaction Analysis. Using publicly available information, CS
First Boston analyzed the purchase prices and multiples paid in the following
selected merger or acquisition transactions in the solid waste industry:
Browning Ferris Industries Inc./Attwoods plc, USA Waste Services Inc./Envirofil
Inc., Browning Ferris Industries Inc./Western Waste Industries Inc.
(terminated), Browning Ferris Industries Inc./Otto Holding International
B.V.(pending), Envirofil/Sacramento Valley Environmental Waste Company, Allied
Waste Industries Inc./Lemons Landfill Corp., Lemons Waste System and other
assets, United Waste Systems Inc./Kelly Run Sanitation Inc., USA Waste/Best Pak
Disposal, Allied Waste Industries Inc./National Scavenger Services Inc. and
W.J. Flyte Corp., USA Waste/North Shore Waste Control, Allied Waste
Industries/Super Services Waste, Sanifill/Redwood Landfill Inc., Sanifill/Nu-
Way Industries, Sanifill/Delaware Recyclable Products, Republic Waste
Industries Inc./Anderson Solid Waste Inc., BET plc/Anglo United, Attwoods
plc/Laidlaw Transportation Ltd. and Laidlaw Transportation Ltd/Laidlaw
Industries (the "Selected Solid Waste Transactions"). CS First Boston compared
purchase prices as a multiple of latest available 12 months net income and book
value, and adjusted purchase prices (equity purchase price plus net debt
assumed) as a multiple of latest available 12 months sales, operating cash flow
and operating income. This analysis resulted in an enterprise valuation
reference range for WMI of approximately $15.0 billion to $16.5 billion.
 
  Discounted Cash Flow Analysis. CS First Boston performed a discounted cash
flow analysis of the projected unleveraged free cash flow of WMI for the fiscal
years ended December 31, 1994 through 1999, based upon certain operating and
financial assumptions, forecasts and other information provided by the
management of WMI and the Company. For purposes of such analysis, CS First
Boston utilized discount rates of 10.5% and 11.0% and terminal year operating
income multiples ranging from 13.5x to 14.0x. This analysis resulted in an
enterprise valuation reference range for WMI of approximately $14.0 billion to
$15.0 billion.
 
  The Comparable Company Analysis, Comparable Transaction Analysis and
Discounted Cash Flow Analysis for WMI resulted in an aggregate enterprise
valuation range for WMI of approximately $13.0 billion to $15.0 billion. This
enterprise valuation reference range for WMI, together with the valuation
reference ranges previously derived for CWM and Rust and the market values of
WTI and Waste Management International, resulted in aggregate enterprise and
equity valuation reference ranges for the Company of approximately $22.7
billion to $25.5 billion and $13.7 billion to $16.3 billion, respectively.
 
 The Notes
 
  CS First Boston analyzed the value of the Notes to be received by the holders
of CWM Shares in the Merger based on the expected trading value of the Notes on
a fully distributed basis. In performing such analysis, CS First Boston
analyzed the key terms of the Notes, including their principal amount, stated
maturity, interest rate, rate of accrual of Stated Discount, optional
redemption by the Company, the Company's purchase obligation at the option of
the holder and conversion rights. CS First Boston also analyzed the trading
values of currently outstanding convertible securities of the Company, CWM and
selected other companies, including Motorola, Inc., Automatic Data Processing,
Alza Corporation, Lowe's Companies, Chiron Corporation and Hanson America. CS
First Boston also considered a number of factors
 
                                       36
<PAGE>
 
relevant to the valuation of convertible debt securities, including prevailing
market interest rates, current spreads over United States Treasury securities
for comparable securities, the Company's credit rating as issuer of the Notes,
the historical and implied volatility of the Company Shares, the discounts to
the future volatility estimates of other newly issued convertible securities,
and the current dividend yield for the Company Shares. This analysis resulted
in a fully distributed valuation reference range for the Notes of approximately
$770.50 to $811.00 per Note, or an equivalent of $9.50 to $10.00 per CWM Share
and an equivalent equity valuation reference range for CWM of approximately
$2.0 billion to $2.1 billion.
 
 Miscellaneous
 
  Pursuant to the terms of CS First Boston's engagement, CWM has agreed to pay
CS First Boston for its services in connection with the Merger an aggregate
financial advisory fee of $1.1 million. Payment of CS First Boston's fee was
not contingent on the rendering of a fairness opinion or the consummation of a
transaction. CWM has also agreed to reimburse CS First Boston for its
reasonable out-of-pocket expenses, including the reasonable fees and expenses
of legal counsel and other advisors, and to indemnify CS First Boston and
certain related persons or entities against certain liabilities, including
liabilities under the federal securities laws, relating to or arising out of
its engagement.

  In the ordinary course of its business, CS First Boston and its affiliates
may actively trade the debt and equity securities of CWM, the Company and their
affiliates for their own account and for the accounts of customers and,
accordingly, may at any time hold a long or short position in such securities.
As of the date of this Proxy Statement-Prospectus, CS First Boston and its
affiliates beneficially own approximately 2,800,000 CWM Shares. CS First Boston
has provided certain investment banking services to Wheelabrator Technologies
Inc. and has received customary fees for such services. Credit Suisse, the
parent company of CS First Boston, has provided banking services, including the
issuances of letters of credit, to the Company in the ordinary course of
business, for which services Credit Suisse has received customary fees, and
Credit Suisse is expected to provide such services in the future. The Company
also maintains a $50,000,000 credit line with Credit Suisse, for which the
Company pays customary fees. CS First Boston and its affiliates may engage in
market making transactions in the Notes.  
 
PLANS FOR CWM AFTER THE MERGER
 
  The Company has not as of the date of this Proxy Statement-Prospectus
approved any specific plans or proposals for any extraordinary corporate
transaction involving CWM after the Merger, any sale or transfer of a material
amount of assets of CWM after the Merger or material change in CWM's corporate
structure or business. However, as noted above under "Background of the
Merger--Development of and Reasons for the Merger Proposal," one of the reasons
for the Company's proposing to engage in the Merger is to achieve certain
operational and cost efficiencies that may result from combining certain
functions and operations of CWM and its subsidiaries with those of the Company
or certain of its subsidiaries. The Company intends after the Merger to cause
CWM to engage in such transactions and material changes as may be appropriate
in the Company's judgment in order to achieve such efficiencies. In addition,
while the Company does not have any present intention to sell or transfer any
material amount of assets of CWM, the Company's plans may change at any time,
and the Company may in the future elect to cause CWM to sell, transfer or
otherwise dispose of all or any portion of the assets of CWM to the Company or
any one or more of its subsidiaries or to any other parties as warranted by
future conditions. The Company may also as warranted in light of future
conditions cause changes in CWM's dividend policy, indebtedness or
capitalization, including the payment of dividends and repayment of
indebtedness to the Company.
 
LITIGATION REGARDING THE MERGER
 
  Several putative class action lawsuits seeking injunctive relief and
unspecified money damages were filed in the Chancery Court of the State of
Delaware in and for New Castle County between July 29 and August 5, 1994
against the Company, CWM and the individual directors of CWM in connection with
the proposed Merger. These lawsuits have since been consolidated for all
purposes into a single action captioned In re Chemical Waste Management, Inc.
Shareholders Litigation, the complaint in which alleges, among other
 
                                       37
<PAGE>
 
things, that the defendants have breached their fiduciary duties to CWM's
minority stockholders because the initially proposed merger consideration was
inadequate and unfair. Discovery is ongoing in the consolidated action. The
Company and CWM believe that their actions and those of CWM's Board of
Directors (and its Special Committee) in connection with the proposed Merger
have been in accordance with Delaware law. Accordingly, the Company, CWM and
CWM's directors intend to contest this lawsuit vigorously.
 
FEES AND EXPENSES AND SOURCE OF FUNDS
 
  The estimated costs and fees of the Company, Merger Sub and CWM in connection
with the Merger and related transactions are as follows:
 
<TABLE>
      <S>                                                            <C>
      Investment Banking Fees and Expenses.......................... $1,200,000
      Filing Fees...................................................    150,000
      Legal Fees and Expenses.......................................    250,000
      Printing, Mailing and Proxy Solicitation Fees.................    500,000
      Accounting Fees...............................................     30,000
      Miscellaneous.................................................     20,000
                                                                     ----------
        Total....................................................... $2,150,000
                                                                     ==========
</TABLE>
 
  The Merger Agreement calls for such fees and expenses to be paid by the party
which incurred them, except for financial printing costs, which shall be borne
equally by the Company and CWM.
 
  The Company, Merger Sub and CWM do not currently know the amount of funds
which will be required to complete the Merger, primarily because the amount of
payments of cash in lieu of issuance of fractional Notes and payments in
respect of Dissenting Shares, if any, cannot be predicted. No fractional Notes
will be issued in the Merger, and instead cash will be paid to a holder for
each CWM Share (other than Dissenting Shares, if any) not converted into a Note
at a price per CWM Share equal to the CWM Share Closing Price. The
determination of the aggregate principal amount at maturity of Notes to be
issued and the amount of cash to be paid in lieu of the issuance of fractional
Notes in the Merger will be made on the basis of information furnished to the
Exchange Agent as to beneficial ownership of CWM Shares held through brokers,
banks or other nominees. Funds required by the Company to complete the Merger
will come from the Company's working capital, sale of short-term promissory
notes or the underwritten sale of notes or bonds.
 
REGULATORY REQUIREMENTS
 
  Except for the filing of the Merger Certificate with the Secretary of State
of the State of Delaware after the approval and adoption of the Merger
Agreement pursuant to the DGCL, and compliance with federal and state
securities laws, neither the Company nor CWM is aware of any material United
States federal or state or foreign governmental regulatory requirement
necessary to be complied with or approval that must be obtained in connection
with the Merger.
 
                              THE MERGER AGREEMENT
 
  The following includes a description of certain provisions of the Merger
Agreement and is qualified in its entirety by reference to the Merger
Agreement, a copy of which is attached hereto as Appendix A and is incorporated
herein by reference.
 
MERGER CONSIDERATION
 
  In the Merger, all publicly held CWM Shares, other than Dissenting Shares,
will, by virtue of the Merger and without any action on the part of such
stockholder, be converted into the Notes. By virtue of the Merger, CWM Shares
held by the Company and its subsidiaries will be cancelled (except for CWM
Shares held in
 
                                       38
<PAGE>
 
escrow for exchange for the Company LYONs, which CWM Shares will be converted
into the Merger Consideration in the same manner as CWM Shares generally).
Notes will be issued in the Merger at the rate of one Note for every 81.1 CWM
Shares (as determined after taking into account all CWM Shares held by such
holder), provided that no fractional Notes will be issued, and instead cash
will be paid to a holder for each CWM Share (other than Dissenting Shares, if
any) not converted into a Note at a price per CWM Share equal to the CWM Share
Closing Price. Accordingly, stockholders who beneficially own fewer than 82 CWM
Shares will not be entitled to receive any Notes in the Merger, but rather will
be paid cash for such CWM Shares on the basis described above. The
determination of the aggregate principal amount at maturity of Notes to be
issued and the amount of cash to be paid in lieu of the issuance of fractional
Notes in the Merger will be made on the basis of information furnished to the
Exchange Agent as to beneficial ownership of CWM Shares held through brokers,
banks or other nominees. The terms of the Notes are described below under
"Description of Notes."
 
  The Merger Consideration was determined as the result of the Company's
Initial Merger Proposal and subsequent negotiation thereof by the Special
Committee with the management of the Company. See "Special Factors--Background
of the Merger," "--Recommendation of the Special Committee and the Board of
Directors of CWM; Fairness of the Merger," "--Fairness Opinion" and Appendix B.
 
EXCHANGE AND PAYMENT PROCEDURES
 
  As soon as practicable after the Effective Time, the Exchange Agent will mail
to each record holder (other than the Company or holders of Dissenting Shares)
of an outstanding certificate or certificates representing CWM Shares as of the
Effective Time, a letter of transmittal and instructions for use in effecting
the surrender of such certificates for exchange for the Merger Consideration.
Upon surrender to the Exchange Agent of a certificate representing CWM Shares,
together with such letter of transmittal, duly executed, the holder of such
certificate shall be entitled to receive in exchange therefor a certificate
representing the number of Notes, if any, and, if applicable, cash in lieu of a
fractional Note, determined as specified above under "--Merger Consideration."
Notes issued in exchange for CWM Shares formerly represented by any such
certificate shall be deemed issued, and the recipient thereof shall be deemed
to have become the record holder thereof, as of the Effective Time. Until
surrendered in accordance with the foregoing instructions, each certificate
representing CWM Shares will represent for all purposes only the right to
receive the number of Notes, if any, determined as specified above under "--
Merger Consideration," and, if applicable, cash in lieu of a fractional Note
(together with any interest or redemption price payable in respect of the Notes
as to which an interest payment date or redemption date shall have occurred on
or after the Effective Time). No interest or other payments becoming due in
respect of the Notes after the Effective Time will be paid to the holder of any
unsurrendered certificate representing CWM Shares until the holder of record of
such certificate surrenders it in accordance with the foregoing procedures, and
no interest shall be paid on any such interest or other payment.
 
  If any certificate evidencing Notes is to be issued pursuant to the
provisions of the Merger Agreement, or any payment is to be made in lieu of a
fractional Note, to a person other than the person in whose name the
certificate representing CWM Shares surrendered in exchange therefor is
registered, a condition of such exchange or payment is that any such
certificate so surrendered be properly endorsed or otherwise in proper form for
transfer and that the person requesting such issuance or payment either pay any
transfer or other taxes required by reason of the issuance or payment to a
person other than the registered holder of such certificate surrendered, or
establish to the satisfaction of the Company that such tax has been paid or is
not applicable.
 
  STOCKHOLDERS OF CWM SHOULD NOT SEND THEIR CWM STOCK CERTIFICATES NOW AND
SHOULD SEND THEM ONLY PURSUANT TO INSTRUCTIONS SET FORTH IN LETTERS OF
TRANSMITTAL TO BE MAILED TO STOCKHOLDERS AS SOON AS PRACTICABLE AFTER THE
EFFECTIVE TIME. IN ALL CASES, THE MERGER CONSIDERATION WILL BE PROVIDED ONLY IN
ACCORDANCE WITH THE PROCEDURES SET FORTH IN THIS PROXY STATEMENT-PROSPECTUS AND
SUCH LETTERS OF TRANSMITTAL.
 
                                       39
<PAGE>
 
  The Company and CWM strongly recommend that certificates for CWM Shares and
letters of transmittal be transmitted only by registered United States mail,
return receipt requested, appropriately insured. Holders of CWM Shares whose
certificates are lost will be required at the holder's expense to furnish a
lost certificate affidavit and bond acceptable in form and substance to Harris
Trust and Savings Bank, CWM's transfer agent.
 
  Any Merger Consideration not validly claimed by CWM stockholders will be
subject to surrender to governmental entities pursuant to applicable abandoned
property, escheat or similar laws. Neither the Exchange Agent nor any party to
the Merger Agreement will be liable to any holder of certificates formerly
representing CWM Shares for any amount paid to any such governmental entity.
 
  The Company will pay all charges and expenses of the Exchange Agent in
connection with the Merger and the payment and issuance of the Merger
Consideration.
 
  Any questions concerning exchange and payment procedures and requests for
letters of transmittal may be addressed to the Exchange Agent at 311 West
Monroe Street, 11th Floor, P.O. Box 755, Chicago, Illinois, 60690.
 
TRANSFER OF CWM SHARES
 
  No transfer of CWM Shares will be made on the stock transfer books of CWM
after the close of business on the day immediately prior to the Effective Date.
If, on or after the Effective Date, certificates for CWM Shares are presented,
they will be cancelled and exchanged for certificates representing Notes, plus,
when applicable, cash in lieu of resulting fractional Notes, as provided in the
preceding section of this Proxy Statement-Prospectus.
 
TREATMENT OF STOCK OPTIONS
 
  The Merger Agreement provides that each outstanding option to acquire CWM
Shares under the Chemical Waste Management, Inc. 1986 Stock Option Plan, the
Chemical Waste Management, Inc. 1992 Stock Option Plan, the Chemical Waste
Management, Inc. 1992 Stock Option Plan for Non-Employee Directors and the
Chemical Waste Management, Inc. 1990 ServiceShares Plan, in each case as such
plan may have been amended (collectively the "Stock Option Plans"), will, upon
consummation of the Merger, be adjusted by virtue of the Merger and without any
action on the part of the holder thereof into the right to purchase on exercise
thereof the number of Company Shares determined by multiplying the number of
CWM Shares subject to such option by the quotient determined by dividing the
CWM Share Closing Price by the Company Share Closing Price (rounded up to the
nearest whole number if such number of Company Shares is not a whole number) at
a price per Company Share equal to the quotient determined by dividing the
aggregate option exercise price payable for CWM Shares by the terms of such
option by the number of Company Shares issuable on exercise of such option as
provided above, subject to all other terms specified in such option. The "CWM
Share Closing Price" is the average of the closing sale prices for CWM Shares
as reported on the NYSE Composite Tape for the ten trading days immediately
preceding the date of the Special Meeting. The "Company Share Closing Price" is
the average of the closing sale prices for Company Shares as reported on the
NYSE Composite Tape for the ten trading days immediately preceding the date of
the Special Meeting.
 
TREATMENT OF LYONS
 
  The Merger Agreement and the indentures for the CWM LYONs provide that each
outstanding CWM LYON, which currently is convertible into CWM Shares issuable
by CWM at the rate of 11.676 CWM Shares per CWM LYON, will, upon consummation
of the Merger, be adjusted by virtue of the Merger and without any action on
the part of the holder thereof, into the right to receive on conversion thereof
upon the terms and conditions specified in such LYON, the Merger Consideration
to which the holder of such LYON would have been entitled had he or she
exercised the right to convert such LYON into CWM Shares immediately before the
Effective Time. Under the indenture for the Company LYONs, which currently are
exchangeable
 
                                       40
<PAGE>
 
for 17.218 CWM Shares per Company LYON, each Company LYON will be accorded the
same treatment. Pursuant to a Supplemental Indenture with Harris Trust and
Savings Bank, as trustee with respect to the CWM LYONs, the Company will assume
CWM's obligations under the CWM LYONs.
 
  The following table shows the prices of CWM LYONs and Company LYONs provided
by Chase Manhattan Bank as of July 28, 1994 (the trading day on which the
initial proposal to effectuate the Merger was publicly announced after the
close of the NYSE), October 14, 1994 (the trading day on which the approval of
the Merger Agreement was publicly announced after the close of the NYSE) and
December 7, 1994.
 
<TABLE>
<CAPTION>
                                                                   CWM   COMPANY
                                                                  LYONS   LYONS
      <S>                                                        <C>     <C>
      July 28, 1994............................................. $381.25 $350.00
      October 14, 1994..........................................  387.50  351.25
      December 7, 1994..........................................  387.50  348.75
</TABLE>
 
COVENANTS
 
  CWM has agreed in the Merger Agreement (subject to the ability of the Special
Committee or the Board of Directors of CWM to change its recommendation as to
the Merger at any time if the failure to do so would be inconsistent with its
fiduciary obligations) to submit the Merger Agreement for CWM stockholder
consideration at the Special Meeting and to recommend to the CWM stockholders
the approval of the transactions contemplated by the Merger Agreement.
 
  The Company has agreed in the Merger Agreement not to dispose of its CWM
Shares prior to the Effective Time (except upon exercise of Company LYONs
exchange rights) or to undertake any stock splits or certain actions with
respect to Company Shares prior to the Effective Time, and has agreed to vote
its CWM Shares in favor of the Merger and to use all reasonable efforts to
cause the Notes and the Company Shares issuable upon conversion thereof to be
listed on the NYSE, subject to notice of issuance. Merger Sub agreed not to
engage in any activities prior to the Effective Time except as provided in the
Merger Agreement. The Company has also agreed to cause CWM to maintain for not
less than three years director and officer liability insurance providing at
least the same amounts and coverage for CWM's officers and directors as the
current policies maintained by or on behalf of CWM and that all rights to
indemnification now existing in favor of the present directors or officers of
CWM and its subsidiaries as in effect on the date of the Merger Agreement shall
continue for a period of six years beyond the Merger.
 
  The Company and CWM have agreed in the Merger Agreement (i) to prepare and
file with the Commission this Proxy Statement-Prospectus, the Registration
Statement and the Schedule 13E-3 and otherwise to make all necessary filings
and take all necessary actions in order to comply with federal and state
securities laws applicable to all the transactions contemplated by the Merger
Agreement; (ii) to afford each other and each other's representatives
reasonable access to information needed for the purpose of evaluating the
transactions contemplated by the Merger Agreement; (iii) to consult with each
other in advance of making public announcements concerning the Merger; and (iv)
to use all reasonable efforts to take or cause to be taken all action and to do
or cause to be done all things necessary or advisable to consummate the
transactions contemplated by the Merger Agreement.
 
CONDITIONS
 
  The obligations of CWM, Merger Sub and the Company to consummate the Merger
are subject to the fulfillment or waiver (if permissible) at or prior to the
Effective Time of certain conditions, including (i) the satisfaction of the
DGCL Vote Requirement and the Independent Vote Requirement; (ii) there not
being in effect any statute, rule, regulation, executive order, ruling or
injunction or other order of a court or agency directing that the transactions
contemplated by the Merger Agreement not be consummated; (iii) the approval for
listing on the NYSE of the Notes and the Company Shares issuable upon
conversion of the Notes, such
 
                                       41
<PAGE>
 
listing to become effective immediately upon notice of issuance of the Notes at
the Effective Time; (iv) the Registration Statement having been declared
effective under the Securities Act and not having become the subject of any
stop order or proceedings seeking a stop order, the Indenture having been
qualified under the Trust Indenture Act of 1939, and all necessary state
securities law permits and authorizations having been obtained; (v) all
required governmental consents and approvals having been obtained and
continuing to be in effect at the Effective Time, except for failures which
would not, individually or in the aggregate, reasonably be expected to have a
Material Adverse Effect (as defined below) on the Company (assuming the Merger
had taken place); and (vi) CS First Boston not having withdrawn or modified in
any material respect its Fairness Opinion.
 
  The obligation of CWM to effect the Merger is subject to the fulfillment or
waiver (if permissible) at or prior to the Effective Time of the following
conditions: (i) the representations and warranties of the Company and Merger
Sub in the Merger Agreement being true when made and as of the Effective Time
(except for permitted changes), except for such failures to be true which are
not reasonably likely to have a Material Adverse Effect; (ii) the Company and
Merger Sub having performed in all material respects their material obligations
contained in the Merger Agreement to be performed or complied with by the
Company or Merger Sub at or prior to the Effective Time; (iii) the delivery to
CWM of certificates of the Company and Merger Sub to the effect that the
conditions set forth in (i) and (ii) have been fulfilled; and (iv) except as
disclosed in reports filed by the Company with the Commission prior to the date
of the Merger Agreement or as contemplated by the Merger Agreement, since June
30, 1994, the Company not suffering a Material Adverse Effect.
 
  The obligations of the Company and Merger Sub to effect the Merger are
subject to the fulfillment or waiver (if permissible) at or prior to the
Effective Time of the following conditions: (i) the representations and
warranties of CWM in the Merger Agreement being true when made and as of the
Effective Time (except for permitted changes), except for such failures to be
true which, individually or in the aggregate, are not reasonably likely to have
a Material Adverse Effect; (ii) CWM having performed in all material respects
its material obligations contained in the Merger Agreement to be performed or
complied with by CWM at or prior to the Effective Time; (iii) the delivery to
the Company and Merger Sub of a certificate of CWM to the effect that the
conditions set forth in (i) and (ii) have been fulfilled; and (iv) except as
disclosed in reports filed by CWM with the Commission prior to the date of the
Merger Agreement or as contemplated by the Merger Agreement or as otherwise
known to the Company at or prior to the date of the Merger Agreement, since
June 30, 1994, CWM not suffering a Material Adverse Effect.
 
  As used in the Merger Agreement, the term "Material Adverse Effect" means
with respect to CWM any adverse change in the financial condition, business,
properties or results of operations of CWM and its subsidiaries (to the extent
owned by CWM) which is material to CWM and its subsidiaries (to the extent
owned by CWM), taken as a whole, and, with respect to the Company, any adverse
change in the financial condition, business, properties or results of
operations of the Company and its subsidiaries (to the extent owned by the
Company) which is material to the Company and its subsidiaries (to the extent
owned by the Company), taken as a whole.
 
  The Merger Agreement provides that the parties thereto may waive compliance
in whole or in part with any of the conditions contained therein to the extent
permitted by law, provided that any such waiver by CWM must be approved by the
Special Committee. As of the date of this Proxy Statement-Prospectus, CWM, the
Company and Merger Sub have no present intention of waiving any material
conditions under the Merger Agreement.
 
TERMINATION; AMENDMENTS
 
  The Merger Agreement provides that it may be terminated and the Merger
abandoned at any time prior to the Effective Time, whether before or after
approval by the stockholders of CWM: (i) by mutual written consent of the
Company and CWM (with the concurrence of the Special Committee); (ii) by either
the
 
                                       42
<PAGE>
 
Company or CWM (with the concurrence of the Special Committee in the case of
termination by CWM) if (a) any court of competent jurisdiction in the United
States or some other governmental body or regulatory authority shall have
issued an order, decree or ruling or taken any other action permanently
restraining, enjoining or otherwise prohibiting the Merger and such order,
decree, ruling or other action shall have become final and nonappealable, (b)
the Merger shall not have been consummated by March 31, 1995, provided that the
right to terminate the Merger Agreement in such event is not available to any
party whose failure to fulfill any of its obligations under the Merger
Agreement results in the failure of the Merger to occur on or before such date,
or (c) the Merger Agreement and the Merger shall have been voted on by
stockholders of CWM at the Special Meeting and the vote shall not have been
sufficient to satisfy the DGCL Vote Requirement or the Independent Vote
Requirement; (iii) by the Company if (a) CWM shall have failed to perform in
any material respect any of its material obligations under the Merger Agreement
theretofore to be performed by CWM, which failure to perform has not been cured
within 30 days following receipt by CWM of notice of such failure to perform
from the Company, (b) any material representation or warranty of CWM contained
in the Merger Agreement shall not be true and correct in all material respects
when made or on and as of the Effective Time as if made on and as of the
Effective Time (except to the extent any such representation or warranty
relates to a particular date); provided, that such failure to be true and
correct has not been cured within 30 days following receipt by CWM of notice of
such failure to be true and correct from the Company, or (c) the Special
Committee or the Board of Directors of CWM withdraws or materially modifies or
changes its recommendation of the Merger Agreement or the Merger and the
Special Committee or the Board of Directors of CWM after consultation with its
counsel determines that the failure to take such action would be inconsistent
with its fiduciary duties to CWM's stockholders under applicable law; and (iv)
by CWM with the concurrence of the Special Committee if (a) Merger Sub or the
Company shall have failed to perform in any material respect any of their
material obligations under the Merger Agreement theretofore to be performed by
the Company or Merger Sub, which failure to perform has not been cured within
30 days following receipt by the Company of notice of such failure to perform
from CWM, (b) any material representation or warranty of Merger Sub or the
Company contained in the Merger Agreement shall not be true and correct in all
material respects when made or on and as of the Effective Time as if made on
and as of the Effective Time (except to the extent any such representation or
warranty relates to a particular date); provided, that such failure to be true
and correct has not been cured within 30 days following receipt by the Company
of notice of such failure to be true and correct from CWM or (c) the Special
Committee or the Board of Directors of CWM withdraws or materially modifies or
changes its recommendation of the Merger Agreement or the Merger and the
Special Committee or the Board of Directors of CWM after consultation with its
counsel determines that the failure to take such action would be inconsistent
with its fiduciary duties to CWM's stockholders under applicable law.
 
  The Merger Agreement provides that it may be amended by the parties thereto
at any time before or after approval thereof by the stockholders of CWM, but,
after such approval, no amendment can be made which by law requires further
approval by such stockholders without such further approval. Any amendment of
the Merger Agreement requires the consent of the Special Committee.
 
LISTING
 
  The Merger Agreement provides that the Company will use all reasonable
efforts to obtain, prior to the Effective Time, approval for the listing on the
NYSE of the Notes issuable as a result of the Merger and the Company Shares
issuable on conversion of the Notes upon notice of issuance.
 
                      DELAWARE STATUTORY APPRAISAL RIGHTS
 
  Holders of CWM Shares are entitled to appraisal rights under Section 262 of
the DGCL. A person having a beneficial interest in CWM Shares held of record in
the name of another person, such as a broker or nominee, must act promptly to
cause the record holder to follow the steps summarized below properly and in a
timely manner to perfect whatever appraisal rights the beneficial owner may
have.
 
                                       43
<PAGE>
 
  THE FOLLOWING DISCUSSION IS NOT A COMPLETE STATEMENT OF THE LAW PERTAINING TO
APPRAISAL RIGHTS UNDER THE DGCL AND IS QUALIFIED IN ITS ENTIRETY BY THE FULL
TEXT OF SECTION 262, WHICH IS REPRINTED IN ITS ENTIRETY AS APPENDIX C TO THIS
PROXY STATEMENT-PROSPECTUS. All references in Section 262 and in this summary
to a "stockholder" are to the record holder of the CWM Shares as to which
appraisal rights are asserted. As used herein, "Surviving Corporation" means
CWM as the corporation surviving the Merger.
 
  Under the DGCL, holders of CWM Shares who do not wish to accept pursuant to
the Merger the consideration provided for in the Merger Agreement and who
follow the procedures set forth in Section 262 will be entitled to have their
CWM Shares appraised by the Delaware Court of Chancery and to receive payment
in cash of the "fair value" of such shares, exclusive of any element of value
arising from the accomplishment or expectation of the Merger, together with a
fair rate of interest, if any, as determined by such court.
 
  Under Section 262, where a merger is to be submitted for approval at a
meeting of stockholders, as in the case of the Special Meeting, the
corporation, not less than 20 days prior to the meeting, must notify each of
its stockholders entitled to appraisal rights that such appraisal rights are
available and include in such notice a copy of Section 262. This Proxy
Statement-Prospectus shall constitute such notice to the holders of CWM Shares
and the applicable statutory provisions of the DGCL are attached to this Proxy
Statement-Prospectus as Appendix C. Any stockholder who wishes to exercise such
appraisal rights, or who wishes to preserve his right to do so, should review
the following discussion and Appendix C carefully because failure to timely and
properly comply with the procedures specified will result in the loss of
appraisal rights under the DGCL.
 
  A holder of CWM Shares wishing to exercise his appraisal rights must deliver
to the Secretary of CWM, before the vote on the Merger Agreement at the Special
Meeting, a written demand for appraisal of his CWM Shares and must not vote his
shares of stock in favor of approval and adoption of the Merger Agreement.
Because a proxy which does not contain voting instructions will, unless
revoked, be voted for approval and adoption of the Merger Agreement, a holder
of CWM Shares who votes by proxy and who wishes to exercise his appraisal
rights must (i) vote against approval and adoption of the Merger Agreement or
(ii) abstain from voting on approval and adoption of the Merger Agreement.
Neither voting (in person or by proxy) against, abstaining from voting on or
failing to vote on the proposal to approve and adopt the Merger Agreement will
constitute a written demand for appraisal within the meaning of Section 262.
The written demand for appraisal must be in addition to and separate from any
such proxy or vote. In addition, a holder of CWM Shares wishing to exercise his
or her appraisal rights must hold of record such shares on the date the written
demand for appraisal is made and must continue to hold such shares until the
Effective Time.
 
  Only a holder of record of CWM Shares is entitled to assert appraisal rights
for the CWM Shares registered in that holder's name. A demand for appraisal
should be executed by or on behalf of the holder of record, fully and
correctly, as his or her name appears on the stock certificates. If the CWM
Shares are owned of record in a fiduciary capacity, such as by a trustee,
guardian or custodian, execution of the demand should be made in that capacity,
and if the CWM Shares are owned of record by more than one person, as in a
joint tenancy and tenancy in common, the demand should be executed by or on
behalf of all joint owners. An authorized agent, including one or more joint
owners, may execute a demand for appraisal on behalf of a holder of record;
however, the agent must identify the record owner or owners and expressly
disclose the fact that, in executing the demand, the agent is agent for such
owner or owners. A record holder such as a broker who holds CWM Shares as
nominee for several beneficial owners may exercise appraisal rights with
respect to the CWM Shares held for one or more beneficial owners while not
exercising such rights with respect to the CWM Shares held for other beneficial
owners; in such case, the written demand should set forth the number of CWM
Shares as to which appraisal is sought and when no number of CWM Shares is
expressly mentioned the demand will be presumed to cover all CWM Shares held in
the name of the record owner. Stockholders who hold their CWM Shares in
brokerage accounts or other nominee forms and who wish to exercise appraisal
rights are urged to consult with their brokers to determine the appropriate
procedures for
 
                                       44
<PAGE>
 
the making of a demand for appraisal by such a nominee. All written demands for
appraisal should be delivered to Thomas A. Witt, Secretary of CWM, either in
person or by mail (certified mail, return receipt requested, being the
recommended form of transmittal) addressed to him at Chemical Waste Management,
Inc., 3001 Butterfield Road, Oak Brook, Illinois 60521.
 
  Within ten days after the Effective Time, the Surviving Corporation must send
a notice as to the effectiveness of the Merger to each former stockholder of
CWM who has made such a written demand for appraisal and who has not voted in
favor of approval and adoption of the Merger Agreement. Within 120 days after
the Effective Time, but not thereafter, the Surviving Corporation, or any
stockholder who is entitled to appraisal rights under Section 262 and has
complied with the requirements of Section 262, may file a petition in the
Delaware Court of Chancery demanding a determination of the fair value of the
CWM Shares. The Surviving Corporation is under no obligation to and has no
present intention to file a petition in respect to the appraisal of the fair
value of the CWM Shares. Accordingly, it is the obligation of the stockholders
to initiate all necessary action to perfect their appraisal rights within the
time prescribed in Section 262.
 
  Within 120 days after the Effective Time, any stockholder who has complied
with the requirements under Section 262 for exercise of appraisal rights will
be entitled, upon written request, to receive from the Surviving Corporation a
statement setting forth the aggregate number of CWM Shares with respect to
which demands for appraisal have been received and which have not voted in
favor of approval and adoption of the Merger Agreement, and the aggregate
number of holders of such shares. Such statements must be mailed within ten
days after a written request therefor has been received by the Surviving
Corporation.
 
  If a petition for appraisal is duly filed by a holder of CWM Shares and a
copy thereof is delivered to the Surviving Corporation, the Surviving
Corporation will then be obligated within 20 days to provide the Delaware Court
of Chancery with a duly verified list containing the names and addresses of all
holders of CWM Shares who have demanded appraisal of their shares. After notice
to such holders of CWM Shares, the Delaware Court of Chancery is empowered to
conduct a hearing upon the petition to determine those holders of CWM Shares
who have complied with Section 262 and who have become entitled to appraisal
rights under that section. The Delaware Court of Chancery may require the
holders of CWM Shares who have demanded payment for their shares to submit
their stock certificates to the Register in Chancery for a notation thereon of
the pendency of the appraisal proceedings; and if any stockholder fails to
comply with such direction, the Delaware Court of Chancery may dismiss the
proceedings as to such stockholder.
 
  After determining the stockholders entitled to an appraisal, the Delaware
Court of Chancery will appraise the "fair value" of their CWM Shares, exclusive
of any element of value arising from the accomplishment or expectation of the
Merger, together with a fair rate of interest, if any, to be paid upon the
amount determined to be the fair value. Stockholders considering seeking
appraisal should be aware that the fair value of their CWM Shares as determined
under Section 262 could be more than, the same as or less than the
consideration they would receive pursuant to the Merger Agreement if they did
not seek appraisal of their CWM Shares and that investment banking opinions as
to fairness from a financial point of view are not necessarily opinions as to
fair value under Section 262. The Delaware Supreme Court has stated that "proof
of value by any techniques or methods which are generally considered acceptable
in the financial community and otherwise admissible in court" should be
considered in the appraisal proceedings. In addition, Delaware courts have
decided that the statutory appraisal remedy, depending on factual
circumstances, may or may not be a dissenter's exclusive remedy. The Court will
also determine the amount of interest, if any, to be paid upon the amounts to
be received by persons whose CWM Shares have been appraised. The costs of the
action may be determined by the Court and taxed upon the parties as the Court
deems equitable. The Court may also order that all or a portion of the expenses
incurred by any stockholder in connection with an appraisal, including, without
limitation, reasonable attorneys' fees and the fees and expenses of experts
utilized in the appraisal proceeding, be charged pro rata against the value of
all of the CWM Shares entitled to appraisal.
 
  Any holder of shares who has duly demanded an appraisal in compliance with
Section 262 will not, after the Effective Time, be entitled to vote the CWM
Shares subject to the appraisal demand for any purpose or be entitled to the
payment of dividends or other distributions on those shares (except dividends
or other
 
                                       45
<PAGE>
 
distributions, other than the Merger Consideration, payable to holders of
record of CWM Shares as of a date prior to the Effective Time).
 
  If any stockholder who demands appraisal of his CWM Shares under Section 262
fails to perfect, or effectively withdraws or loses, his right to appraisal as
provided in the DGCL the CWM Shares of such stockholder will be converted into
the right to receive the Merger Consideration in accordance with the Merger
Agreement. A stockholder will fail to perfect, or effectively lose or withdraw,
his right to appraisal if he votes for approval and adoption of the Merger
Agreement (or submits a proxy without voting instructions) or if no petition
for appraisal is filed within 120 days after the Effective Time of the Merger
or if the stockholder delivers to CWM (or, after the Effective Time, to the
Surviving Corporation) a written withdrawal of his demand for appraisal and an
acceptance of the Merger, except that any such attempt to withdraw made more
than 60 days after the Effective Time will require the written approval of the
Surviving Corporation.
 
  FAILURE TO FOLLOW THE STEPS REQUIRED BY SECTION 262 OF THE DGCL FOR
PERFECTING APPRAISAL RIGHTS MAY RESULT IN THE LOSS OF SUCH RIGHTS.
 
                       CERTAIN PRELIMINARY 1994 AND 1995
                     STRATEGIC PLANNING INFORMATION OF CWM
 
  CWM does not as a matter of course publicly disclose internal budgets, plans,
estimates or forecasts as to future revenues, earnings or other financial
information. The consolidated income statement data as to the years ending
December 31, 1994 and 1995 summarized below reflect information that was
contained in preliminary strategic plans which were prepared by management of
CWM in August 1994 and furnished to the Company in connection with the regular
conduct of the Company's business. These preliminary plans were based upon a
variety of estimates and assumptions, the material ones of which are set forth
below. The estimates and assumptions underlying the preliminary plans involved
judgments with respect to, among other things, future economic, competitive,
regulatory and financial market conditions and future business decisions which
may not be realized and are inherently subject to significant business,
economic, competitive and regulatory uncertainties, all of which are difficult
to predict and many of which are beyond the control of CWM. While CWM believes
these estimates and assumptions to have been reasonable, there can be no
assurance that the preliminary plans will be realized, and actual results may
vary materially from those shown. In light of the uncertainties inherent in
forward-looking information of any kind, the inclusion of this preliminary plan
information herein should not be regarded as a representation by CWM, the
Company or any other person that the anticipated results will be achieved.
Primarily as a result of changes affecting certain markets in which CWM
competes, many of the goals which have been contained in CWM's prior
preliminary strategic plans of this type have not been achieved. Accordingly,
investors are cautioned not to place undue reliance on such information.
 
  This information was not prepared with a view to public disclosure or
compliance with the published guidelines of the Commission regarding forecasts,
nor was it prepared in accordance with the guidelines established by the
American Institute of Certified Public Accountants for preparation and
presentation of financial forecasts. The information set forth below does not
purport to present results of operations in accordance with generally accepted
accounting principles, nor has it been audited, compiled, or otherwise examined
by Arthur Andersen & Co. or any other independent accountants. Accordingly,
neither Arthur Andersen & Co. nor any other independent accountants assume any
responsibility for the information presented below.
 
  Neither CWM nor the Company intends to update or otherwise revise the
information presented below to reflect circumstances existing after the date of
the most recent financial statements incorporated by reference in this Proxy
Statement-Prospectus or to reflect the occurrence of unanticipated events. The
information presented below should be read together with CWM's Consolidated
Financial Statements and
 
                                       46
<PAGE>
 
the notes thereto incorporated by reference in this Proxy Statement-Prospectus
and other information contained or incorporated by reference in this Proxy
Statement-Prospectus.
 
  Subject to the qualifications and limitations stated above, the information
presented below was based on the following material assumptions:
 
    1. The economic expansion underway during the summer of 1994 would
  continue in the United States and in the other countries in which CWM
  operates or seeks to operate, without a significant increase in prevailing
  interest rates.
 
    2. No material changes would be made to CWM's organizational structure as
  it existed in late August 1994 except for such modifications as CWM's
  management had planned as of that time (which did not include the Merger).
 
    3. Except as noted below, CWM's businesses would not be materially
  affected by changes in regulations which apply to the services offered to
  customers.
 
    4. There would be no significant change in the competitive environment,
  including the pricing of services and the number of principal competitors,
  prior to the end of 1995.
 
    5. Adequate capital would be available to support growth in working
  capital and the addition of fixed capital to support projected revenue
  growth.
 
    6. No dividends would be paid at least through the end of 1995.
 
    7. A sufficient number of skilled workers would continue to be available
  to meet customer needs.
 
    8. CWM would be able to continue to attract key executives as needed to
  properly support and control the growth of its business.
 
    9. Weather would not be unusually severe in any of CWM's principal
  markets.
 
    10. Income tax rates applicable to CWM would not change.
 
    11. Revenue growth would be modest on a consolidated basis as a result of
  the impact of the following factors:
 
    . Continuation of customer initiatives in the areas of waste
      minimization, recycling and the treatment of hazardous waste to enable
      such waste to be managed outside of the Subtitle C regulatory system
      imposed by the Resource Conservation and Recovery Act, and
      continuation of an unsettled environmental regulatory climate in
      several of CWM's other United States markets.
 
    . The acceleration of low-level radioactive waste volumes received for
      disposal at CWM's facility in Barnwell, South Carolina in anticipation
      of a June 30, 1994 state deadline which denied access to the facility
      as of that date by customers outside an eight-state region in the
      southeastern United States and the expected cessation of disposal
      operations at that facility at the end of 1995 before replacement
      disposal facilities are developed.
 
    . No material growth in revenue from services provided to affiliates of
      WMX.
 
    . Successful expansion in international markets.
 
    12. Operating costs as a percent of revenue would decline as a result of
  internal restructuring and better utilization of productivity-enhancing
  technology.
 
    13. All acquisitions completed by CWM in 1993 and 1994 would continue to
  perform as expected by CWM management.
 
  The following consolidated income statement data of CWM reflect information
that was contained in the preliminary strategic plans referred to above
(000,000's omitted, except per share amounts):
 
<TABLE>
<CAPTION>
                                                YEAR ENDING       YEAR ENDING
                                             DECEMBER 31, 1994 DECEMBER 31, 1995
                                             ----------------- -----------------
      <S>                                    <C>               <C>
      Revenue...............................     $2,261.0          $2,317.0
      Income before income taxes............     $  122.7          $  146.7
      Net income............................     $   63.3          $   75.9
      Earnings per share....................     $    0.30         $    0.36
</TABLE>
 
                                       47
<PAGE>
 
                          CWM SHARE AND COMPANY SHARE
     MARKET PRICE INFORMATION; DIVIDEND INFORMATION; AND CWM SHARE PURCHASE
                                  INFORMATION
 
  CWM Shares and Company Shares are traded on the NYSE under the symbols "CHW"
and "WMX," respectively. The following table shows the per share high and low
sales prices reported in the consolidated transaction reporting system for
transactions in CWM Shares and Company Shares for the periods indicated and for
July 28, 1994 (the trading day on which the initial proposal to effectuate the
Merger was publicly announced after the close of the NYSE), October 14, 1994
(the trading day on which the approval of the Merger Agreement was publicly
announced after the close of the NYSE), and December 7, 1994. The following
table also shows for the periods indicated the dividends declared per CWM Share
and Company Share. Holders of CWM Shares are encouraged to obtain current
market quotations for CWM Shares and Company Shares.
 
<TABLE>
<CAPTION>
                                                                      DIVIDENDS
                            MARKET PRICE OF DIVIDENDS MARKET PRICE OF DECLARED
                              CWM SHARES    DECLARED  COMPANY SHARES     PER
                            ---------------  PER CWM  ---------------  COMPANY
                             HIGH     LOW     SHARE    HIGH     LOW     SHARE
                            ------- ------- --------- ------- ------- ---------
<S>                         <C>     <C>     <C>       <C>     <C>     <C>
1992
  First Quarter............ $23 1/2 $18 1/2   $.05    $46 5/8 $37 3/4   $.11
  Second Quarter...........  20 1/4  16 3/8    .05     41 1/4  32 7/8    .13
  Third Quarter............  18 3/4  16 3/8    .05     36 7/8  32        .13
  Fourth Quarter...........  22      17 5/8    .05     41 5/8  34        .13
1993
  First Quarter............ $21 3/8 $15 5/8   $.05    $40 1/4 $33 5/8   $.13
  Second Quarter...........  15 3/4   9        .05     36 3/8  29 1/4    .15
  Third Quarter............  10       7 3/8     --     33 1/8  29 1/2    .15
  Fourth Quarter...........   9 3/8   7         --     30 5/8  23        .15
1994
  First Quarter............ $11 3/8 $ 7 1/2   $ --    $30 3/4 $23       $.15
  Second Quarter...........   9 3/4   7 1/8     --     29 3/8  22 5/8    .15
  Third Quarter............   9 1/2   7 1/2     --     30 3/8  26 3/8    .15
  Fourth Quarter (through
   December 7).............   9 5/8   7 5/8     --     30      25 1/8    .15
  July 28, 1994............ $    8  $ 7 3/4   $ --    $29 3/8 $28 5/8   $ --
  October 14, 1994.........   8 1/4   7 3/4     --     29 1/4  28 3/4     --
  December 7, 1994.........   9 1/2   9 1/4     --     25 3/4  25 1/8     --
</TABLE>
 
  In August 1993, the CWM Board of Directors suspended indefinitely the payment
of quarterly cash dividends on CWM Shares.
 
  The declaration of future dividends, if any, in respect of Company Shares,
and if the proposed Merger is not consummated, CWM Shares, will necessarily be
dependent upon business conditions, the earnings and financial position of the
Company and CWM, respectively, the Company's and CWM's respective plans with
respect to operating and capital expenditures and such other matters as their
respective Boards of Directors deem relevant.
 
                                       48
<PAGE>
 
  The following table shows for the periods indicated the amount of shares
purchased, the range of prices paid and the average purchase price for all
purchases by CWM of CWM Shares.
 
<TABLE>
<CAPTION>
                                                                        AVERAGE
                                              NUMBER OF RANGE OF PRICES PURCHASE
                                                 CWM     PER CWM SHARE   PRICE
                                               SHARES   --------------- PER CWM
                                              PURCHASED  HIGH     LOW    SHARE
                                              --------- ------- ------- --------
<S>                                           <C>       <C>     <C>     <C>
1992
  First Quarter..............................       --  $   --  $   --  $   --
  Second Quarter.............................       --      --      --      --
  Third Quarter.............................. 1,451,000  16 7/8  16 3/8  16.765
  Fourth Quarter.............................       --      --      --      --
1993
  First Quarter..............................   660,000 $    17 $16 1/8 $16.521
  Second Quarter............................. 1,127,000      16      10  12.938
  Third Quarter.............................. 1,513,300   9 1/8   7 1/2   8.538
  Fourth Quarter.............................       --      --      --      --
1994
  First Quarter..............................       --  $   --  $   --  $   --
  Second Quarter.............................       --      --      --      --
  Third Quarter..............................       --      --      --      --
  Fourth Quarter
   (through December 7)......................       --      --      --      --
</TABLE>
 
                                 CAPITALIZATION
 
  The following table sets forth the consolidated short-term debt and
capitalization of the Company at September 30, 1994 and as adjusted to give
effect to the issuance of the Notes in the Merger.
 
<TABLE>
<CAPTION>
                                                          SEPTEMBER 30, 1994
                                                        -----------------------
                                                        OUTSTANDING AS ADJUSTED
                                                        ----------- -----------
                                                            (000S OMITTED)
<S>                                                     <C>         <C>
Short-term debt:
  Current portion of long-term debt.................... $   732,075 $   732,075
Long-term debt (excluding current portion):
  Bonds and notes payable..............................   6,221,908   6,221,908
  Notes offered hereby.................................           0     396,982
Minority interest......................................   1,542,596   1,380,083
Put options............................................     240,151     240,151
Total stockholders' equity.............................   4,426,763   4,426,763
    Total capitalization............................... $13,163,493 $13,397,962
</TABLE>
 
                              DESCRIPTION OF NOTES
 
  The Notes are to be issued under the Indenture. A copy of the form of the
Indenture is filed as an exhibit to the Registration Statement of which this
Proxy Statement-Prospectus is a part. The following summaries of certain
provisions of the Notes and the Indenture do not purport to be complete and are
subject to, and are qualified in their entirety by reference to, all the
provisions of the Notes and the Indenture, including the definitions therein of
certain terms which are not otherwise defined in this Proxy Statement-
Prospectus. Wherever particular provisions or defined terms of the Indenture
(or of the Form of Note which is a part thereof) are referred to, such
provisions or defined terms are incorporated herein by reference. References
herein are to sections in the Indenture and paragraphs in the Form of Note.
 
                                       49
<PAGE>
 
GENERAL
 
  The Notes will be unsecured obligations of the Company limited to a maximum
of $810,000,000 aggregate principal amount at maturity and will mature on
January 20, 2005. The amount of Notes issued in the Merger is expected to be
less than that maximum amount as a result of the payment of cash in lieu of
fractional Notes and as a result of Dissenting Shares, if any. In addition,
Notes will not be issued in respect of the currently outstanding CWM LYONs
unless and until the holders thereof elect to convert such LYONs into Notes,
which may never occur. The principal amount at maturity of each Note is $1,000
and will be payable at the office of the Paying Agent, initially the Trustee,
in the Borough of Manhattan, the City of New York, or any other office of the
Paying Agent maintained for such purpose. (Sections 4.1 and 4.5 and Form of
Note, paragraph 2.)
 
  The Notes will bear interest from and after the Effective Date at the rate of
2% per annum of the $1,000 principal amount at maturity of each Note, payable
semi-annually on January 20 and July 20 of each year. The Notes will have a
Stated Issue Price of $717.80 per $1,000 of principal amount at maturity. The
difference between the principal amount at maturity of $1,000 and the Stated
Issue Price represents the Stated Discount which, together with cash interest
payable on the Notes as described above, will accrue at a rate of 5.75% per
annum (determined on a semi-annual bond equivalent basis) based on the Stated
Issue Price. Such rate will be used solely for purposes of determining the
Redemption Price, the Purchase Price and the Change in Control Price and will
differ from a Holder's actual yield. The calculation of the accrual of Stated
Discount in the period during which a Note remains outstanding will be on a
semi-annual bond equivalent basis using a 360-day year composed of twelve 30-
day months; such accrual will commence on the Effective Date. (Form of Note,
paragraph 1.) Maturity, conversion, purchase by the Company at the option of a
Holder (including upon a Change in Control) or redemption of a Note will cause
such Stated Discount and interest to cease to accrue on such Note, under the
terms and subject to the conditions of the Indenture. (Section 2.8.) The
Company may not reissue a Note that has matured or been converted, purchased by
the Company at the option of a Holder (including upon a Change in Control),
redeemed or otherwise cancelled (except for registration of transfer, exchange
or replacement thereof). (Section 2.10.)
 
  The Notes will be issued only in fully registered form, without coupons, in
denominations of $1,000 of principal amount at maturity or an integral multiple
thereof. (Section 2.6 and Form of Note, paragraph 11.) Notes may be presented
for conversion at the office of the Conversion Agent and for exchange or
registration of transfer at the office of the Registrar, each such agent
initially being the Trustee. (Sections 2.6 and 11.2 and Form of Note, paragraph
9.) The Company will not charge a service charge for any registration of
transfer or exchange of Notes; however, the Company may require payment by a
Holder of a sum sufficient to cover any tax, assessment or other governmental
charge payable in connection therewith. (Section 2.6.)
 
SUBORDINATION OF NOTES; EFFECT OF CORPORATE STRUCTURE
 
  Indebtedness evidenced by the Notes will be subordinated in right of payment,
as set forth in the Indenture, to the prior payment in full of all existing and
future Senior Indebtedness of the Company. (Section 10.1 and Form of Note,
paragraph 8.) Senior Indebtedness is defined in the Indenture as the principal
of (and premium, if any) and interest on (including interest accruing after the
filing of a petition initiating any proceeding pursuant to any Bankruptcy Law,
but only to the extent allowed or permitted to the holder of such Debt against
the bankruptcy or any other insolvency estate of the Company in such
proceeding) and fees, expenses, reimbursement obligations, indemnity
obligations and other amounts due on or in connection with any Debt incurred,
assumed or guaranteed by the Company, whether outstanding on the date of the
Indenture or thereafter incurred, assumed or guaranteed, and all deferrals,
renewals, extensions and refundings of, or amendments, modifications or
supplements to, any such Debt. Excluded from the definition of Senior
Indebtedness are the following: (a) any Debt which expressly provides (i) that
such Debt shall not be senior in right of payment to the Notes, or (ii) that
such Debt shall be subordinated to any other Debt of the Company, unless such
Debt expressly provides that such Debt shall be senior in right of payment to
the
 
                                       50
<PAGE>
 
Notes; (b) any Debt of the Company in respect of the Notes; (c) any Debt of the
Company to any Subsidiary or Affiliate of the Company; and (d) the Company
LYONs, the CWM LYONs and the Company's Liquid Yield Option Notes due 2001.
(Section 10.1.)
 
  By reason of such subordination, in the event of dissolution, insolvency,
bankruptcy or other similar proceedings, upon any distribution of assets, (i)
the Holders of the Notes will be required to pay over their share of such
distribution to the holders of Senior Indebtedness until such Senior
Indebtedness is paid in full (Section 10.2); and (ii) creditors of the Company
who are not Holders of Notes or holders of Senior Indebtedness may recover
less, ratably, than holders of Senior Indebtedness and may recover more,
ratably, than Holders of Notes.
 
  If the Notes are declared due and payable prior to their Stated Maturity by
reason of the occurrence of an Event of Default, then the Company is obligated
to notify promptly holders of Senior Indebtedness of such acceleration. The
Company may not pay the Notes, any repurchase or redemption price in respect
thereof, cash in respect of a conversion or interest thereon until 120 days
have passed after such notice of acceleration is given and may thereafter pay
the Notes, any repurchase or redemption price in respect thereof, cash in
respect of a conversion and interest thereon if the terms of the Indenture
otherwise permit payment at that time. (Section 10.3.)
 
  No payment of the principal amount at maturity, Redemption Price, Purchase
Price, Change in Control Purchase Price, cash in respect of a conversion (other
than cash in lieu of fractional shares) or interest with respect to any Notes
may be made, nor may the Company acquire any Notes, if any default with respect
to Senior Indebtedness occurs and is continuing that permits the acceleration
of the maturity thereof and either such default is the subject of judicial
proceedings or the Company receives notice of the default, unless (a) 120 days
pass after notice of the default is given and such default is not then the
subject of judicial proceedings or the default with respect to the Senior
Indebtedness is cured or waived and (b) the terms of the Indenture otherwise
permit such payment or acquisition of the Notes at that time. (Section 10.4.)
 
  The Notes are obligations exclusively of the Company. Since the operations of
the Company are currently conducted in part through subsidiaries, the cash flow
and the consequent ability to service debt, including the Notes, of the Company
are dependent, in part, upon the earnings of its subsidiaries and the
distribution of those earnings to or upon loans or other payments of funds by
those subsidiaries to the Company. The subsidiaries are separate and distinct
legal entities and have no obligation, contingent or otherwise, to pay any
amounts due pursuant to the Notes or to make any funds available therefor,
whether by dividends, loans or other payments. In addition, the payment of
dividends and the making of loans and advances to the Company by its
subsidiaries may be subject to statutory, regulatory or contractual
restrictions, are contingent upon the earnings of those subsidiaries and are
subject to various business considerations.
 
  Any right of the Company to receive assets of any of its subsidiaries upon
their liquidation or reorganization (and the consequent right of the Holders of
the Notes to participate in those assets) will be effectively subordinated to
the claims of that subsidiary's creditors (including trade creditors), except
to the extent that the Company is itself recognized as a creditor of such
subsidiary, in which case the claims of the Company would still be subordinate
to any security interests in the assets of such subsidiary and any indebtedness
of such subsidiary senior to that held by the Company.

  As of September 30, 1994, the Company and its subsidiaries had approximately
$6.455 billion of Debt outstanding (excluding accrued interest thereon) which
constituted Senior Indebtedness of the Company or outstanding indebtedness
(excluding consolidated intercompany payables) of the subsidiaries of the
Company not guaranteed by the Company, which would not have constituted Senior
Indebtedness but to which the Notes would have been effectively subordinated.
There are no restrictions in the Indenture on the creation of additional Senior
Indebtedness (or any other indebtedness).  
 
                                       51
<PAGE>
 
CONVERSION RIGHTS
 
  A Holder of a Note may convert it at any time after the Effective Date;
provided, however, that if a Note is called for redemption by the Company, the
Holder may convert it only until the close of business on the Redemption Date.
On conversion of a Note, the Company may elect to deliver Company Shares or an
amount of cash determined as described below. A Note in respect of which a
Holder has delivered a Purchase Notice or a Change in Control Purchase Notice
exercising the option of such Holder to require the Company to purchase such
Note may be converted only if such notice is withdrawn in accordance with the
terms of the Indenture. (Form of Note, paragraph 9.) A Holder may convert a
portion of such Holder's Notes so long as such portion is $1,000 principal
amount at maturity or an integral multiple thereof. (Section 11.1.)
 
  The initial Conversion Rate will be a number of Company Shares per Note
determined on the Effective Date by dividing the Stated Issue Price of $717.80
by the Company Share Closing Price, subject to adjustment upon the occurrence
of certain events described below, provided that the initial Conversion Rate
will be not less than 21.90 nor more than 26.76 Company Shares per Note. (Form
of Note, paragraph 9.) See "CWM Share and Company Share Market Price
Information; Dividend Information; and CWM Share Purchase Information." A
Holder otherwise entitled to a fractional Company Share on conversion shall
receive cash equal to the Sale Price (as defined below) on the Business Day
immediately preceding the Conversion Date multiplied by the fraction of a
Company Share to which such Holder would otherwise be entitled. (Section 11.3.)
 
  On conversion of a Note, a Holder will not receive any cash payment
representing accrued Stated Discount, accrued Original Issue Discount or
accrued but unpaid interest. The Company's delivery to the Holder of the fixed
number of Company Shares into which the Note is convertible (together with the
cash payment, if any, in lieu of a fractional share) or cash in the applicable
amount, as described below, will be deemed to satisfy the Company's obligation
to pay the principal amount of the Note, including the accrued Stated Discount
and accrued Original Issue Discount attributable to the period from the Issue
Date to the Conversion Date, and accrued but unpaid interest. Thus, the accrued
Stated Discount, accrued Original Issue Discount and accrued but unpaid
interest will be deemed to be paid in full rather than cancelled, extinguished
or forfeited. (Section 11.2.)
 
  To convert a Note, a Holder must (i) complete and manually sign the
conversion notice on the back of the Note (or complete and manually sign a
facsimile thereof) and deliver such notice to the Conversion Agent, (ii)
surrender the Note to the Conversion Agent, (iii) if required, furnish
appropriate endorsements and transfer documents, and (iv) if required, pay all
transfer or similar taxes. (Section 11.2 and Form of Note, paragraph 9.)
 
  In lieu of delivering Company Shares upon notice of conversion of any Note,
the Company may elect to pay the Holder surrendering such Note an amount in
cash per Note equal to the Sale Price (as defined below) of a Company Share on
the Business Day immediately prior to the Conversion Date multiplied by the
Conversion Rate in effect on the Conversion Date, subject to adjustment upon
the occurrence of certain events described below; provided that if such payment
of cash is not allowed pursuant to the provisions of the Indenture or
otherwise, the Company shall deliver Company Shares (and cash in lieu of
fractional shares) as set forth below. (Section 11.1.) Upon conversion of any
Notes, the Company shall inform the Holder through the Conversion Agent of its
election to deliver Company Shares or to pay cash in lieu of delivery of such
shares, as soon as practicable following the Conversion Date. If the Company
elects to deliver Company Shares, such shares will be delivered through the
Conversion Agent no later than the seventh Business Day following the
Conversion Date. If the Company elects to pay cash, such cash payment will be
made to the Holder surrendering such Notes no later than the fifth Business Day
following such Conversion Date. (Section 11.2.) See "Certain Tax
Considerations--Disposition or Conversion."
 
  The Company may not pay cash upon conversion of any Notes (other than cash in
lieu of fractional shares) if there has occurred and is continuing an Event of
Default described under "--Events of Default; Notice and Waiver" below (other
than a default in such payment on such Notes). (Section 11.1.)
 
                                       52
<PAGE>
 
  The "Sale Price" on any date means the closing per share sale price for
Company Shares (or, if no closing price is reported, the average of the bid and
ask prices or, if more than one in either case, the average of the average bid
and average ask prices) on such date as reported in the composite transactions
for the principal United States securities exchange on which Company Shares are
traded or, if Company Shares are not listed on a United States national or
regional securities exchange, as reported by the National Association of
Securities Dealers Automated Quotation System. (Section 11.1.)
 
  The Conversion Rate will be adjusted for dividends or distributions on
Company Shares payable in Company Shares or other Capital Stock; subdivisions,
combinations or certain reclassifications of Company Shares; distributions to
all holders of Company Shares of certain rights to purchase Company Shares for
a period expiring within 60 days at less than the Quoted Price at the time; and
distributions to such holders of assets or debt securities of the Company or
certain rights to purchase securities of the Company (excluding cash dividends
or other cash distributions from current or retained earnings other than any
Extraordinary Cash Dividend). However, no adjustment need be made if Holders
may participate in the transaction or in certain other cases. In cases where
the fair market value of assets, debt securities or certain rights, warrants or
options to purchase securities of the Company distributed to shareholders
exceeds the Average Quoted Price of Company Shares, or such Average Quoted
Price exceeds the fair market value of such assets, debt securities or rights,
warrants or options so distributed by less than $1.00, rather than being
entitled to an adjustment in the Conversion Rate, the Holder of a Note upon
conversion thereof will be entitled to receive, in addition to the Company
Shares into which such Note is convertible, the kind and amount of assets, debt
securities or rights, warrants or options comprising the distribution that such
Holder would have received if such Holder had converted such Note immediately
prior to the record date for determining the shareholders entitled to receive
the distribution. The Indenture permits the Company to increase the Conversion
Rate from time to time. (Sections 11.6, 11.7, 11.8, and 11.12 and Form of Note,
paragraph 9.)
 
  If the Company is party to a consolidation, merger or binding share exchange
or a transfer of all or substantially all of its assets, the right to convert a
Note into Company Shares may be changed into a right to convert it into the
kind and amount of securities, cash or other assets of the Company or another
person which the Holder would have received if the Holder had converted such
Holder's Notes immediately prior to the transaction. (Section 11.14.)
 
  Upon any taxable distribution to holders of Company Shares which results in
an adjustment of the Conversion Rate or if the Conversion Rate is increased at
the discretion of the Company, the Holders of the Notes may, in certain
circumstances, be deemed to have received a distribution subject to federal
income tax as a dividend. See "Certain Tax Considerations--Constructive
Dividend."
 
REDEMPTION OF NOTES AT THE OPTION OF THE COMPANY
 
  No sinking fund is provided for the Notes. The Company may redeem the Notes
at any time on or after March 15, 2000 for cash as a whole at any time, or from
time to time in part for the Redemption Price plus accrued but unpaid interest
to the Redemption Date. (Sections 3.1 and 3.2 and Form of Note, paragraph 5.)
Not less than 30 days' nor more than 60 days' notice of redemption shall be
given by mail to Holders of Notes. (Section 3.3 and Form of Note, paragraph 7.)
 
                                       53
<PAGE>
 
  The table below shows Redemption Prices of a Note per $1,000 principal amount
at maturity on March 15, 2000, at each March 15 thereafter prior to maturity
and at maturity on January 20, 2005, which prices reflect the accrued Stated
Discount to such dates. The Redemption Price of a Note redeemed between such
dates would include an additional amount reflecting the additional accrued
Stated Discount since the next preceding date in the table. The Company will
also pay accrued but unpaid interest to the actual Redemption Date. (Form of
Note, paragraph 5.)
 
<TABLE>
<CAPTION>
                                                       (1)     (2)       (3)
                                                     STATED  ACCRUED  REDEMPTION
                                                      ISSUE   STATED    PRICE
REDEMPTION DATE                                       PRICE  DISCOUNT (1) + (2)
- ---------------                                      ------- -------- ----------
<S>                                                  <C>     <C>      <C>
March 15, 2000...................................... $717.80 $125.55    $843.35
March 15, 2001......................................  717.80  154.45     872.25
March 15, 2002......................................  717.80  185.04     902.84
March 15, 2003......................................  717.80  217.41     935.21
March 15, 2004......................................  717.80  251.67     969.47
At maturity.........................................  717.80  282.20   1,000.00
</TABLE>
 
  If less than all of the outstanding Notes are to be redeemed, the Trustee
shall select the Notes to be redeemed in principal amounts at maturity of
$1,000 or integral multiples thereof by lot, pro rata or by another method the
Trustee considers fair and appropriate. If a portion of a Holder's Notes is
selected for partial redemption and such Holder converts a portion of such
Notes, such converted portion shall be deemed to be of the portion selected for
redemption. (Section 3.2.)
 
  Prior to or on the Redemption Date, the Company is required to deposit with
the Paying Agent money sufficient to pay the Redemption Price plus accrued but
unpaid interest to the Redemption Date. Payment of the Redemption Price plus
accrued but unpaid interest to the Redemption Date is conditioned upon delivery
of such Note (together with necessary endorsements) to the Paying Agent at its
office in the Borough of Manhattan, the City of New York, or any other office
of the Paying Agent maintained for such purpose, at any time (whether prior to,
on or after the Redemption Date) after the notice of redemption is given.
Payment of the Redemption Price plus accrued but unpaid interest to the
Redemption Date for such Note will be made promptly following the later of the
Redemption Date or the time of delivery of such Note. (Section 3.4.) If on the
Business Day following the Redemption Date the Paying Agent holds, in
accordance with the terms of the Indenture, money sufficient to pay the
Redemption Price plus accrued but unpaid interest to the Redemption Date of
such Note, then, on and after such date, Stated Discount and interest on such
Note will cease to accrue, whether or not such Note is delivered to the Paying
Agent, and all other rights of the Holder shall terminate (other than the right
to receive the Redemption Price plus accrued but unpaid interest to the
Redemption Date upon delivery of the Note). (Section 2.8.)
 
PURCHASE OF NOTES AT THE OPTION OF THE HOLDER
 
  On March 15, 1998, and on March 15, 2000 (each a "Purchase Date"), the
Company will purchase for cash in the amount of the Purchase Price, plus
accrued but unpaid interest to the Purchase Date, at the option of the Holder
thereof, any outstanding Note for which a Purchase Notice has been delivered to
the Paying Agent from the opening of business on the date that is 20 Business
Days prior to the Purchase Date until the close of business on the Purchase
Date and not withdrawn, subject to certain conditions. The Purchase Notice
shall state (i) the certificate numbers of the Notes to be delivered by the
Holder thereof for purchase by the Company; (ii) the portion of the principal
amount at maturity of Notes to be purchased, which portion must be $1,000 or an
integral multiple thereof; and (iii) that such Notes are to be purchased by the
Company pursuant to the applicable provisions of the Notes and the Indenture.
(Section 3.8.)
 
  The Purchase Price payable to the Holder of a Note demanding purchase thereof
shall be equal to $790.24 for a purchase on March 15, 1998 and $843.35 for a
purchase on March 15, 2000. Such amounts plus accrued but unpaid interest to
the Purchase Date will represent the entire purchase price, and no additional
amounts will be paid in respect of accrued Stated Discount or accrued Original
Issue Discount.
 
                                       54
<PAGE>
 
  Any Purchase Notice may be withdrawn by the Holder by a written notice of
withdrawal delivered by the Holder to the Paying Agent prior to the close of
business on the Purchase Date. The notice of withdrawal shall state the
principal amount at maturity and the certificate numbers of the Notes to which
the withdrawal notice relates and the principal amount at maturity, if any,
which remains subject to the Purchase Notice. (Section 3.10.)
 
  Payment of the Purchase Price plus accrued but unpaid interest to the
Purchase Date for a Note for which a Purchase Notice has been delivered and not
withdrawn is conditioned upon delivery of such Note (together with necessary
endorsements) to the Paying Agent at its office in the Borough of Manhattan,
the City of New York, or any other office of the Paying Agent maintained for
such purpose, at any time (whether prior to, on or after the Purchase Date)
after the delivery of such Purchase Notice. Payment of the Purchase Price plus
accrued but unpaid interest to the Purchase Date for such Note will be made
promptly following the later of the Purchase Date or the time of delivery of
such Note. (Section 3.8.) If on the Business Day following the Purchase Date
the Paying Agent holds, in accordance with the terms of the Indenture, money
sufficient to pay the Purchase Price plus accrued but unpaid interest to the
Purchase Date of such Notes, then, on and after such date, Stated Discount and
interest on such Note will cease to accrue, whether or not such Note is
delivered to the Paying Agent, and all other rights of the Holder shall
terminate (other than the right to receive the Purchase Price plus accrued but
unpaid interest to the Purchase Date upon delivery of the Note). (Section 2.8.)
 
  No Notes may be purchased if there has occurred and is continuing an Event of
Default described under "--Events of Default; Notice and Waiver" below (other
than a default in the payment of the Purchase Price with respect to such
Notes). (Section 3.10.)
 
CHANGE IN CONTROL PERMITS PURCHASE OF NOTES AT THE OPTION OF THE HOLDER
 
  In the event of any Change in Control (as defined below) of the Company
occurring on or prior to March 15, 1998, each Holder of Notes will have the
right, at the Holder's option, subject to the terms and conditions of the
Indenture, to require the Company to purchase all or any portion (provided that
the principal amount at maturity must be $1,000 or an integral multiple
thereof) of the Holder's Notes as of the date (a "Change in Control Purchase
Date") that is 35 Business Days after the occurrence of such Change in Control
at a cash price equal to the Stated Issue Price plus accrued Stated Discount to
the Change in Control Purchase Date (the "Change in Control Purchase Price"),
together with accrued but unpaid interest to the Change in Control Purchase
Date. (Section 3.9 and Form of Note, paragraph 6.)
 
  Within 15 Business Days after the occurrence of a Change in Control, the
Company is obligated to mail to the Trustee and to all Holders of Notes at
their addresses shown in the register of the Registrar (and to beneficial
owners as required by applicable law) a notice regarding the Change in Control,
which notice shall include a form of Change in Control Purchase Notice (a
"Change in Control Purchase Notice") to be completed by the Holder and shall
state, among other things: (i) the events causing a Change in Control and the
date of such Change in Control, (ii) the last date on which the Change in
Control purchase right may be exercised, (iii) the Change in Control Purchase
Price, plus the amount of accrued but unpaid interest payable by the Company,
(iv) the Change in Control Purchase Date, (v) the name and address of the
Paying Agent and the Conversion Agent, (vi) the Conversion Rate and any
adjustments thereto, (vii) that Notes with respect to which a Change in Control
Purchase Notice is given by the Holder may be converted only if the Change in
Control Purchase Notice has been withdrawn in accordance with the terms of the
Indenture, and (viii) the procedures that Holders must follow to exercise these
rights. The Company will cause a copy of such notice to be published once in a
daily newspaper of national circulation. (Section 3.9.)
 
  To exercise this right, the Holder must deliver the Change in Control
Purchase Notice to the Paying Agent (initially the Trustee) prior to the close
of business on the Change in Control Purchase Date. The Change in Control
Purchase Notice shall state (i) the certificate numbers of the Notes to be
delivered by the Holder thereof for purchase by the Company; (ii) the portion
of the principal amount at maturity of Notes to be purchased, which portion
must be $1,000 or an integral multiple thereof; and (iii) that such Notes are
to be purchased by the Company pursuant to the applicable provisions of the
Notes. (Section 3.9.)
 
                                       55
<PAGE>
 
  Any Change in Control Purchase Notice may be withdrawn by the Holder by a
written notice of withdrawal delivered to the Paying Agent prior to the close
of business on the Change in Control Purchase Date. The notice of withdrawal
shall state the principal amount at maturity and the certificate numbers of the
Notes as to which the withdrawal notice relates and the principal amount at
maturity, if any, which remains subject to a Change in Control Purchase Notice.
(Section 3.10.)
 
  Payment of the Change in Control Purchase Price, plus accrued but unpaid
interest to the Change in Control Purchase Date, for a Note for which a Change
in Control Purchase Notice has been delivered and not validly withdrawn is
conditioned upon delivery of such Note (together with necessary endorsements)
to the Paying Agent at any time (whether prior to, on or after the Change in
Control Purchase Date) after the delivery of such Change in Control Purchase
Notice. (Section 3.9.) Payment of the Change in Control Purchase Price, plus
accrued but unpaid interest to the Change in Control Purchase Date, for such
Note will be made promptly following the later of the Change in Control
Purchase Date or the time of delivery of such Note. (Section 3.9.) If on the
Business Day following the Change in Control Purchase Date the Paying Agent
holds, in accordance with the terms of the Indenture, money sufficient to pay
the Change in Control Purchase Price, plus accrued but unpaid interest to the
Change in Control Purchase Date, of such Note, then, immediately after such
Change in Control Purchase Date, Stated Discount, Original Issue Discount and
interest on such Note will cease to accrue, whether or not such Note is
delivered to the Paying Agent, and all other rights of the Holder shall
terminate (other than the right to receive the Change in Control Purchase
Price, plus accrued but unpaid interest to the Change in Control Purchase Date,
of such Note, upon delivery of the Note). (Section 2.8.)
 
  Under the Indenture, a "Change in Control" of the Company is deemed to have
occurred at such time as (i) any person, including its Affiliates and
Associates (other than the Company, its Subsidiaries, or their employee benefit
plans) files a Schedule 13D or 14D-1 (or any successor schedule, form or report
under the Exchange Act) disclosing that such person has become the beneficial
owner of 50% or more of the voting power of Company Shares or other Capital
Stock of the Company into which Company Shares are reclassified or changed,
with certain exceptions, or (ii) there shall be consummated any consolidation
or merger of the Company (a) in which the Company is not the continuing or
surviving corporation or (b) pursuant to which the Company Shares (or such
other Capital Stock) would be converted into cash, securities or other
property, in each case, other than a consolidation or merger of the Company in
which the holders of Company Shares (or such other Capital Stock) immediately
prior to the consolidation or merger have, directly or indirectly, at least a
majority of the common equity of the continuing or surviving corporation
immediately after the consolidation or merger. (Section 3.9.) The Indenture
does not permit the Board of Directors of the Company to waive the Company's
obligation to purchase Notes at the option of Holders in the event of a Change
in Control of the Company.
 
  The Change in Control purchase feature of the Notes may in certain
circumstances make more difficult or discourage a takeover of the Company. The
Change in Control purchase feature, however, is not the result of management's
knowledge of any specific effort to accumulate Company Shares or to obtain
control of the Company by means of a merger, tender offer, solicitation or
otherwise, or part of a plan by management to adopt a series of anti-takeover
provisions. Instead, the Change in Control purchase feature is a standard term
contained in other securities similar to the Notes, and the terms of such
feature resulted from negotiations between the Company and the Special
Committee.
 
  The Company could, in the future, enter into certain transactions, including
certain recapitalizations of the Company, that would not constitute a Change in
Control with respect to the Change in Control purchase feature of the Notes,
but that would increase the amount of Senior Indebtedness outstanding at such
time. No Notes may be purchased at the option of Holders upon a Change in
Control of the Company if there has occurred (prior to, on or after the giving,
by the Holders of such Notes, of the required Change in Control Purchase
Notice) and is continuing an Event of Default with respect to the Notes
described under "--Events of Default; Notice and Waiver" below (other than a
default in the payment of the Change in Control Purchase
 
                                       56
<PAGE>
 
Price, plus accrued but unpaid interest to the Change in Control Purchase Date,
of such Note, with respect to such Notes). (Section 3.10.) Further, the Notes
are subordinated to the prior payment of Senior Indebtedness as described under
"--Subordination of Notes; Effect of Corporate Structure" above. Certain
indebtedness of the Company may be accelerated upon the occurrence of certain
events that may constitute a Change in Control. As of September 30, 1994, the
amount of such indebtedness, together with the indebtedness represented by the
CWM Lyons being assumed by the Company in the Merger, was approximately $487
million. There can be no assurance that the Company will have available funds
for the purchase of Notes required to be purchased by the Company at the
Holder's option in the event of any Change in Control.
 
  The Company will comply with the provisions of Rule 13e-4, Rule 14e-1 and any
other tender offer rules under the Exchange Act which may then be applicable
and will file Schedule 13E-4 or any other schedule required thereunder in
connection with any offer by the Company to purchase Notes at the option of
Holders, including upon a Change in Control. (Section 3.13.)
 
MERGERS AND SALES OF ASSETS BY THE COMPANY
 
  The Company may not consolidate with or merge with or into any other person
or convey, transfer or lease all or substantially all its properties and assets
to another person, unless, among other items, (i) the Company shall be the
surviving corporation or the resulting, surviving or transferee person is
organized and existing under the laws of the United States, any state thereof
or the District of Columbia and such person expressly assumes by a supplemental
indenture all obligations of the Company under the Notes and the Indenture, and
(ii) the Company or such successor person shall not immediately thereafter be
in default under the Indenture. Upon the assumption of the Company's
obligations by such a person in such circumstances, subject to certain
exceptions, the Company shall be discharged from all obligations under the
Notes and the Indenture. (Section 5.1.)
 
EVENTS OF DEFAULT; NOTICE AND WAIVER
 
  The Indenture provides that, if an Event of Default specified therein shall
have happened and be continuing, either the Trustee or the Holders of not less
than 25% in aggregate principal amount at maturity of the Notes then
outstanding may declare the Stated Issue Price of the Notes plus the accrued
Stated Discount and accrued but unpaid interest on the Notes to the date of
such declaration to be immediately due and payable. In the case of certain
events of bankruptcy or insolvency, the Stated Issue Price of the Notes plus
accrued Stated Discount and accrued but unpaid interest thereon to the
occurrence of such event shall automatically become and be immediately due and
payable without any declaration or other act on the part of the Trustee or the
Holders. Upon acceleration, as described in either of the preceding sentences,
the subordination provisions of the Indenture preclude any payment being made
to Holders of Notes for at least 120 days. (Section 10.3.) See "--Subordination
of Notes; Effect of Corporate Structure." Under certain circumstances, the
Holders of a majority in aggregate principal amount at maturity of the
outstanding Notes may rescind any such acceleration with respect to the Notes
and its consequences. (Sections 6.2 and 6.4.) Interest shall accrue and be
payable on demand upon a default in the payment of the principal amount at
maturity, cash in respect of a conversion, or any Redemption Price, Purchase
Price or Change in Control Purchase Price plus accrued but unpaid interest with
respect to any Note, and interest shall accrue and be payable on demand on
overdue interest (to the extent that the payment of such interest shall be
legally enforceable). (Form of Note, paragraph 1.)
 
  Under the Indenture, Events of Default are defined as: (i) default in payment
of the principal amount at maturity, interest, Redemption Price, Purchase Price
or Change in Control Purchase Price with respect to any Note when such becomes
due and payable or default in payment of cash or delivery of Company Shares
upon conversion of any Note (whether or not any such payment is prohibited by
the provisions of the Indenture); (ii) failure by the Company to comply with
any of its other agreements in the Notes or the Indenture upon the receipt by
the Company of notice of such default by the Trustee or by Holders of not less
than 25% in aggregate principal amount at maturity of the Notes then
outstanding and the Company's failure to cure such default within 60 days after
receipt by the Company of such notice; or (iii) certain events of bankruptcy or
insolvency. (Section 6.1.)
 
                                       57
<PAGE>
 
  The Trustee shall give notice to Holders of the Notes of any continuing
default known to the Trustee within 90 days after the occurrence thereof;
provided, that the Trustee may withhold such notice, as to any default other
than a payment default, if it determines in good faith that withholding the
notice is in the interests of the Holders (Section 7.5.)
 
  The Holders of a majority in aggregate principal amount at maturity of the
outstanding Notes may direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee or of exercising any trust
or power conferred on the Trustee, provided that such direction shall not be in
conflict with any law or the Indenture and subject to certain other
limitations. (Section 6.5.) No Holder of any Note will have any right to pursue
any remedy with respect to the Indenture or the Notes, unless (i) such Holder
shall have previously given the Trustee written notice of a continuing Event of
Default; (ii) the Holders of at least 25% in aggregate principal amount at
maturity of the outstanding Notes shall have made a written request to the
Trustee to pursue such remedy; (iii) such Holder or Holders have offered to the
Trustee reasonable indemnity satisfactory to the Trustee; (iv) the Holders of a
majority in aggregate principal amount at maturity of the outstanding Notes
have not given the Trustee a direction inconsistent with such request within 60
days after receipt of such request; and (v) the Trustee shall have failed to
comply with the request within such 60-day period. (Section 6.6.)
 
  However, the right of any Holder (x) to receive payment of the principal
amount at maturity, interest, cash in respect of a conversion, Redemption
Price, Purchase Price or Change in Control Purchase Price with respect to any
Note and any interest in respect of a default in the payment of any such
amounts on such Note, on or after the due date expressed in such Note, (y) to
convert a Note or (z) to institute suit for the enforcement of any such
payments or conversion shall not be impaired or adversely affected without such
Holder's consent. (Section 6.7.) The Holders of a majority in aggregate
principal amount at maturity of the outstanding Notes may waive an existing
default and its consequences, other than (i) any default in any payment on the
Notes, (ii) any default with respect to the conversion rights of the Notes or
(iii) any default in respect of certain covenants or provisions in the
Indenture which may not be modified without the consent of the Holder of each
Note as described in "--Modification" below. (Section 6.4.)
 
  The Company will be required to furnish to the Trustee annually a statement
as to any default by the Company in the performance and observance of its
obligations under the Indenture. (Section 4.3.)
 
MODIFICATION
 
  Without the consent of any Holder of Notes, the Company and the Trustee may
amend the Indenture to cure any ambiguity, omission, defect or inconsistency,
provided that such amendment does not adversely affect the rights of any Holder
of Notes, to provide for the assumption by a successor corporation of the
obligations of the Company under the Indenture, to provide for uncertificated
Notes in addition to certificated Notes (so long as any "registration-required
obligation" within the meaning of Section 163(f)(2) of the Internal Revenue
Code is in registered form for purposes of the Internal Revenue Code), to make
any change that does not adversely affect the rights of any Holder of Notes or
to comply with the Trust Indenture Act of 1939 or any amendment thereto, and
any requirement of the Commission in connection with the qualification of the
Indenture. (Section 9.1.) No amendment may be made to the subordination
provisions of the Indenture that adversely affects the rights of any holder of
Senior Indebtedness then outstanding, unless the holders of such Senior
Indebtedness (as required pursuant to the terms of such Senior Indebtedness)
consent to such change. (Section 9.2.)
 
  Modification and amendment of the Indenture or the Notes may be effected by
the Company and the Trustee with the consent of the Holders of not less than a
majority in aggregate principal amount at maturity of the Notes then
outstanding. However, without the consent of each Holder affected thereby, no
amendment may, among other things: (i) reduce the principal amount at maturity,
Stated Issue Price, interest, amount of cash to be paid by the Company in
respect of a conversion, Purchase Price, Change in Control Purchase Price or
Redemption Price with respect to any Note, or extend the stated maturity of any
Note or alter the
 
                                       58
<PAGE>
 
manner or rate of accrual of discount or interest, or make any Note payable in
money or securities other than that stated in the Notes; (ii) make any
reduction in the principal amount at maturity of Notes whose Holders must
consent to an amendment or any waiver under the Indenture or modify the
Indenture provisions relating to such amendments or waivers; (iii) make any
change that adversely affects the right to convert any Note or the right to
require the Company to purchase a Note; (iv) modify the provisions of the
Indenture relating to the subordination of the Notes in a manner adverse to the
Holders of the Notes; or (v) impair the right to institute suit for the
enforcement of any payment with respect to, or conversion of, the Notes.
(Section 9.2.)
 
LIMITATIONS OF CLAIMS IN BANKRUPTCY
 
  If a bankruptcy proceeding is commenced in respect of the Company, the claim
of the Holder of a Note is, under Title 11 of the United States Code, limited
to the Tax Issue Price (as defined under "Certain Tax Considerations--Original
Issue Discount and Other Interest") of the Note plus that portion of the
Original Issue Discount that has accrued from the Date of Issue to the
commencement of the Proceeding.
 
TAXATION OF NOTES
 
  See "Certain Tax Considerations" for a discussion of certain tax aspects
which will apply to Holders of Notes.
 
INFORMATION CONCERNING THE TRUSTEE
 
  The Company maintains deposit accounts and conducts other banking
transactions with the Trustee in the ordinary course of business.
 
                           CERTAIN TAX CONSIDERATIONS
 
  The following is a summary of certain of the expected federal income tax
consequences of the receipt of Notes and cash in the Merger in exchange for CWM
Shares and of the ownership, disposition and conversion of the Notes. Such tax
treatment may vary depending upon a Holder's particular situation. This summary
does not discuss all of the tax consequences which may be relevant to certain
types of Holders subject to special treatment under the federal income tax laws
(such as individual retirement accounts and other tax-deferred accounts, life
insurance companies, tax-exempt organizations, dealers in securities and
foreign persons). The summary of the federal income tax consequences of the
ownership, disposition and conversion of the Notes is limited to Holders who
will acquire the Notes in the Merger and who will hold the Notes as capital
assets. This summary is based on the Internal Revenue Code of 1986, as amended
(the "Code"), Treasury Regulations promulgated thereunder, rulings, official
pronouncements, and judicial decisions, all as in effect as of the date of this
Proxy Statement-Prospectus. All of these are subject to change or to different
interpretations by the Internal Revenue Service ("IRS") or the courts.
Accordingly, stockholders of CWM should consult their own tax advisers with
respect to the particular consequences to them of the receipt of Notes and cash
in the Merger and holding, disposing of and converting Notes, including the
applicability and effect of any state, local or foreign tax laws to which they
may be subject and of any legislative or administrative changes in law.
 
  The Company has been advised by its counsel, Bell, Boyd & Lloyd, that, in the
opinion of such counsel, the Notes will be treated as indebtedness for federal
income tax purposes. The following discussion of tax consequences assumes that
the Notes will be treated as indebtedness.
 
RECEIPT OF NOTES AND CASH
 
  The Merger will be a taxable transaction to the public stockholders of CWM.
Each such stockholder will recognize gain or loss measured by the difference
between the sum of the fair market value of the Notes and the amount of cash
received by the stockholder in the Merger and the stockholder's basis in the
CWM Shares exchanged therefor. If the CWM Shares were held by such stockholder
as capital assets, the gain or loss will be capital gain or loss (which will be
long term if the CWM Shares have been held for more than one year). The amount
of the tax on the gain recognized by a stockholder as a result of the Merger
may exceed the amount of cash, if any, received by the stockholder in the
Merger.
 
                                       59
<PAGE>
 
ORIGINAL ISSUE DISCOUNT AND OTHER INTEREST
 
  If, as the Company believes is likely to be the case, the Notes are
determined to have Original Issue Discount for federal income tax purposes
under the rules described below, Holders will be required to include Original
Issue Discount in income periodically over the term of the Notes before receipt
of the cash attributable to such income. The amount of Original Issue Discount
is expected to differ from the Stated Discount. Whether or not the Notes are
determined to have Original Issue Discount, Holders will be required to include
the semi-annual cash interest payments on the Notes in income under their
regular method of accounting.
 
  For federal income tax purposes, the excess, if any, of the "stated
redemption price at maturity" (which does not include cash interest) of a Note
over the "Tax Issue Price" will constitute Original Issue Discount. The Tax
Issue Price of a Note will be its fair market value on the Effective Date. The
Tax Issue Price is expected to differ from the Stated Issue Price of $717.80.
Because a Holder has options to require the Company to purchase a Note on March
15, 1998 and March 15, 2000 and the Company has the right to redeem a Note at
any time after March 15, 2000, one of these earlier dates may be treated as the
maturity date and the Purchase Price or Redemption Price, as the case may be,
payable on such date may be treated as the stated redemption price at maturity
of a Note for purposes of determining the amount and accrual of Original Issue
Discount. If the exercise of a Holder's option to require the Company to
purchase a Note would increase the yield on a Note, it will be assumed for
these purposes that the option will be exercised. Similarly, if the exercise of
the Company's right to redeem a Note would decrease the yield on the Note, it
will be assumed that the Company will exercise the right.
 
  If the Tax Issue Price is higher than the Stated Issue Price of $717.80 but
less than $832.81, the Company will be assumed to exercise its right to redeem
the Notes on March 15, 2000 for a stated redemption price at maturity of
$843.35, with the result that Original Issue Discount will accrue prior to that
date at a slower rate than would otherwise be the case. If the Tax Issue Price
is less than $717.80, each Holder will be assumed to exercise its right to
require the Company to purchase a Note on March 15, 1998 for a stated
redemption price at maturity of $790.24, with the result that Original Issue
Discount will accrue prior to that date at a faster rate than would otherwise
be the case. If the Tax Issue Price of a Note is more than $832.81 (the price
at which the Company may redeem a Note on March 15, 2000 less the amount
defined by the Code as de minimis Original Issue Discount), the Notes will be
treated as not having Original Issue Discount prior to March 15, 2000, but will
have Original Issue Discount for periods thereafter if the Company does not
exercise its right to redeem the Notes, as described in the next paragraph.
 
  If an option to require purchase or right to redeem that is assumed to be
exercised under these rules is not in fact exercised, for purposes of
calculating future accruals of Original Issue Discount the Notes will be
treated as reissued for an amount equal to the applicable deemed stated
redemption price at maturity as described above. Thereafter, accrued Original
Issue Discount on the Notes will equal accrued Stated Discount.
 
  If the Notes are determined to have Original Issue Discount, a Holder will be
required to include in gross income for federal income tax purposes the sum of
the daily portions of Original Issue Discount with respect to a Note for each
day during the taxable year or portion of a taxable year on which such Holder
holds the Note ("Accrued Original Issue Discount"). The daily portion is
determined by allocating to each day of an accrual period a pro rata portion of
the Original Issue Discount allocable to that accrual period. The "accrual
period" for a Note may be of any length and may vary in length over the term of
the Note, provided that each accrual period is no longer than one year and each
scheduled payment of principal or interest occurs on the first day or the final
day of an accrual period. The Company and the Holder may choose different
accrual periods. The amount of Original Issue Discount on a Note allocable to
each accrual period is determined by (i) multiplying the "adjusted issue price"
(as defined below) of the Note at the beginning of an accrual period by the
yield to maturity of the Note (determined on the basis of compounding at the
end of each accrual period and properly adjusted for the length of the accrual
period and using the maturity date determined as described above) and (ii)
subtracting from that product the amount of cash interest payable during the
accrual period. The "adjusted issue price" of a Note at the beginning of any
accrual period will be the sum of its Tax Issue Price and the amount of
Original Issue Discount allocable to all prior periods.
 
                                       60
<PAGE>
 
  Recently adopted Treasury regulations generally provide that if a principal
purpose in structuring a debt instrument (including, for example, the existence
of a call option) is to achieve a result that is unreasonable in light of the
purposes of the Code, the IRS can depart from the otherwise applicable rules to
prevent such a result. If the Tax Issue Price is higher than the Stated Issue
Price, the effect of treating the Company as exercising its right to redeem the
Notes on March 15, 2000 will result in the accrual of Original Issue Discount
at a slower rate than would be the case if the Notes did not contain the call
option. While the matter is not free from doubt in the absence of any precedent
interpreting these regulations, the Company does not believe that the
regulations apply to the Notes and intends to report the amount of Original
Issue Discount accruing on the Notes in accordance with the foregoing
discussion.
 
  The Company will be required to furnish annually to the IRS and to certain
non-corporate Holders information regarding the amount of Original Issue
Discount attributable to that year.
 
DISPOSITION OR CONVERSION
 
  A Holder's initial basis for determining gain or loss on the sale or other
disposition of a Note will be the Tax Issue Price of the Note. A Holder's basis
will be increased by any Accrued Original Issue Discount includable in such
Holder's gross income. Gain or loss upon a sale or other disposition of a Note
(including a sale to the Company) will generally be capital gain or loss (which
will be long term if the Note is held for more than one year). Net capital
gains of individuals are, under certain circumstances, taxed at lower rates
than items of ordinary income.
 
  A Holder's conversion of a Note into Company Shares generally will not be a
taxable event (except with respect to cash received in lieu of a fractional
share, discussed below). The Holder's obligation to include in gross income the
daily portions of Original Issue Discount with respect to a Note will terminate
prospectively on the date of conversion. The Holder's basis in the Company
Shares received on conversion of a Note will be the same as the Holder's
adjusted basis in the Note at the time of conversion (exclusive of any tax
basis allocable to a fractional share), and the holding period for the Company
Shares received on conversion will include the holding period of the Note
converted (assuming each is held as a capital asset), except that the Holder's
holding period for Company Shares allocable to Accrued Original Issue Discount
may commence on the day following the date of conversion. Gain or loss upon a
sale or other disposition of the Company Shares received on conversion of a
Note will be capital gain or loss if the Company Shares are capital assets in
the hands of the Holder.
 
  Under the current advance ruling policy of the IRS, cash received in lieu of
a fractional Company Share upon conversion of a Note should be treated as a
payment in exchange for the fractional interest in such Company Share.
Accordingly, if the Company Shares are capital assets in the hands of the
Holder, the receipt of cash in lieu of a fractional Company Share should
generally result in capital gain or loss, if any, measured by the difference
between the cash received for the fractional share interest and the Holder's
adjusted basis in the fractional share interest.
 
  If a Holder elects to convert a Note into Company Shares but the Company
chooses to deliver cash rather than Company Shares, such an exchange will be a
taxable sale. The Holder will recognize gain or loss upon the sale, measured by
the difference between the amount of cash payable to the Holder and the
Holder's adjusted basis in the Note. The gain or loss recognized by the Holder
will be capital gain or loss.
 
  If the Holder elects to exercise his option to tender a Note to the Company
on a Purchase Date or Change in Control Purchase Date, or the Company elects to
redeem a Note, such an exchange will be a taxable sale. The Holder will
recognize gain or loss upon the sale, measured by the difference between the
amount of cash payable by the Company to the Holder in satisfaction of the
purchase price and the Holder's adjusted basis in the Note. Gain or loss
recognized by the Holder will be capital gain or loss.
 
 
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<PAGE>
 
CONSTRUCTIVE DIVIDEND
 
  If at any time the Company makes a distribution of property to stockholders
which would be taxable to such stockholders as a dividend for federal income
tax purposes (for example, distributions of evidences of indebtedness or assets
of the Company, but generally not stock dividends or rights to subscribe for
Company Shares) and, pursuant to the antidilution provisions of the Indenture,
the Conversion Rate of the Notes is increased, such increase may be deemed to
be the payment of a taxable dividend to Holders of Notes. If the Conversion
Rate is increased at the discretion of the Company, such increase may be deemed
to be the payment of a taxable dividend to Holders of Notes.
 
BACKUP WITHHOLDING
 
  Certain non-corporate CWM stockholders may be subject to backup withholding
at a rate of 31% on (i) any cash proceeds otherwise payable as part of the
Merger Consideration and (ii) any Original Issue Discount or interest paid on
the Notes. Generally, backup withholding will not apply to CWM stockholders or
Holders of Notes who provide their taxpayer identification numbers to the
Exchange Agent or Paying Agent and certify under penalties of perjury that
their numbers are correct and that they are not subject to backup withholding
due to notification by the IRS that they have underreported interest or
dividend income. Additional information about the exemptions from backup
withholding will be contained in the Letter of Transmittal to be mailed to
stockholders after the Effective Date.
 
                            BUSINESS OF THE COMPANY
 
  The Company is a leading international provider of environmental, engineering
and construction, industrial and related services.
 
  Through WMI, the Company provides integrated solid waste management services
in North America to commercial, industrial, municipal and residential
customers, as well as to other waste management companies. These services
consist of solid waste collection, transfer, resource recovery and disposal
services. As part of these services, the Company is engaged in providing,
through its Recycle America(R) and Recycle Canada(R) programs, paper, glass,
plastic and metal recycling services to commercial and industrial operations
and curbside recycling services for such materials to residences; in removing
methane gas from sanitary landfill facilities for use in electricity
generation; and in providing medical and infectious waste management services
to hospitals and other health care and related facilities. In addition, through
WMI the Company provides street sweeping and parking lot cleaning services,
portable fencing and power pole services and Port-O-Let(R) portable sanitation
services to municipalities and commercial customers.
 
  CWM is an approximately 78.6%-owned subsidiary of the Company, and its
business is described below under "Business of CWM."
 
  WTI, an approximately 55%-owned subsidiary of the Company, provides a wide
array of environmental products and systems in North America and abroad. WTI's
clean energy group is a leading developer of facilities and systems for, and
provider of services to, the trash-to-energy, energy, and independent power
markets. Through the clean energy group, WTI develops, arranges financing for,
operates and owns facilities that dispose of trash and other waste materials in
an environmentally acceptable manner by recycling it into energy in the form of
electricity and steam. WTI's clean water group is principally involved in the
design,
 
                                       62
<PAGE>
 
manufacture and operation of facilities and systems used to purify water, to
treat municipal and industrial wastewater, to treat and manage biosolids
resulting from the treatment of wastewater by converting them into useful
fertilizers, and to recycle organic wastes into compost material useable for
horticultural and agricultural purposes. The clean water group also designs and
manufactures various products and systems used in water and wastewater
treatment facilities and industrial facilities, precision profile wire screens
for use in groundwater wells and other industrial applications, and certain
other industrial equipment. WTI's clean air group designs, fabricates and
installs technologically advanced air pollution emission control and
measurement systems and equipment, including systems which remove pollutants
from the emissions of WTI's trash-to-energy facilities as well as power plants
and other industrial facilities.
 
  Rust is a subsidiary owned approximately 56% by CWM and 40% by WTI, and its
business is described below under "Business of CWM."
 
  The Company provides comprehensive waste management and related services
internationally, primarily through Waste Management International, a subsidiary
owned 56% by the Company, 12% by Rust and 12% by WTI. Waste Management
International provides a wide range of solid and hazardous waste management
services (or has interests in projects or companies providing such services) in
various countries in Europe and in Argentina, Australia, Brunei, Hong Kong,
Indonesia, Malaysia, New Zealand, Singapore and Taiwan.
 
  The Company also owns an approximately 28% interest in ServiceMaster Consumer
Services L.P., a provider of lawn care, pest control and other consumer
services. The remaining ownership interest is held indirectly by ServiceMaster
Limited Partnership.
 
  The Company was incorporated in Delaware in 1968 and subsequently succeeded
to certain businesses owned by its organizers and others. Company Shares are
listed on the NYSE under the trading symbol "WMX" and are also listed on the
Frankfurt Stock Exchange, the London Stock Exchange, the Chicago Stock Exchange
and the Swiss Stock Exchanges in Basle, Zurich and Geneva. Additional
information concerning the Company is included in the Company Reports
incorporated by reference in this Proxy Statement-Prospectus. See "Documents
Incorporated by Reference."
 
                                BUSINESS OF CWM
 
  CWM is a leading provider of hazardous waste management services and various
other environmental and industrial services. CWM furnishes chemical waste
management services, including transportation, treatment, resource recovery and
disposal, to commercial and industrial customers, as well as to other waste
management companies and to governmental entities. CWM also furnishes
radioactive waste management services, primarily to electric utilities and
governmental entities.
 
  CWM also owns approximately 56% of Rust, a subsidiary engaged in furnishing
engineering, construction, environmental and infrastructure consulting,
hazardous substance remediation and a variety of other on-site industrial and
related services, primarily to clients in government and in the chemical,
petrochemical, nuclear, energy, utility, pulp and paper, manufacturing,
environmental services and other industries. Rust has signed a definitive
agreement under which OHM will acquire Rust's hazardous and nuclear waste
remediation services business units. See "Summary--Recent Development."
 
  On January 1, 1993, CWM and WTI formed Rust and acquired 58% and 42%,
respectively, of Rust's outstanding shares. Rust was created to serve the
engineering, construction, environmental and infrastructure consulting,
hazardous substance remediation and on-site industrial and related services
markets, which the managements of CWM, WTI and Brand believed could be served
more effectively by organizing the Company's several business units serving
those markets into a single integrated company. WTI contributed primarily its
engineering and construction and environmental and infrastructure consulting
services businesses and its then recently formed international engineering unit
based in London. CWM contributed primarily its hazardous substance remediation
services business, its approximately 56% ownership interest in
 
                                       63
<PAGE>
 
Brand, and its 12% ownership interest in Waste Management International. On May
7, 1993, Brand was merged into a subsidiary of Rust, and shares of Brand (other
than those owned by Rust or exchanged for cash in the merger) were converted
into shares of Rust. Brand changed its name to "Rust Industrial Services Inc."
and is now a wholly owned subsidiary of Rust. See also "Certain Relationships
and Transactions" for information as to certain agreements pertaining to Rust.
 
  CWM was organized by the Company as a wholly owned subsidiary in 1978. In
1986, in anticipation of the initial public offering of CWM Shares, the Company
consolidated under CWM's ownership substantially all of the Company's ongoing
domestic businesses that then provided hazardous waste management services. In
1986, CWM engaged in an initial public offering of approximately 18.9% of the
post-offering CWM Shares. In connection with these and other transactions, CWM
and the Company and their respective subsidiaries have entered into various
agreements with respect to their ongoing relationships and other matters. See
"Certain Relationships and Transactions."
 
  CWM is approximately 78.6%-owned by the Company. CWM Shares are listed on the
NYSE under the trading symbol "CHW" and are also listed on the Chicago Stock
Exchange. Additional information concerning CWM is included in the CWM Reports
incorporated by reference in this Proxy Statement-Prospectus. See "Documents
Incorporated by Reference."
 
                     CERTAIN RELATIONSHIPS AND TRANSACTIONS
 
  CWM and the Company (or certain of their respective subsidiaries) have
entered into a number of interrelated agreements with respect to their ongoing
relationships and certain transactions. Because of the complexity of the
various relationships between CWM and the Company (including their respective
subsidiaries), there can be no assurance that each of such agreements, or the
transactions provided for therein, considered separately, has been or will be
effected on terms no less favorable to CWM than could have been or could be
obtained from unaffiliated third parties. However, it has been the intention of
CWM and the Company that such agreements and transactions, taken as a whole,
should accommodate their respective interests in a manner that is fair to all
parties, while continuing certain mutually beneficial joint arrangements.
 
  Additional or modified arrangements and transactions may be entered into by
CWM, the Company and their respective subsidiaries. In the event that the
Merger does not occur, any such future arrangements and transactions are
expected to be determined through negotiation between them, but there can be no
assurance that conflicts of interest will not occur. In the event that the
Merger does not occur, CWM intends to seek the approval of its independent
directors for any agreement which its management or any independent director of
CWM believes to be of material importance to CWM and to involve a significant
conflict of interest with the Company or its affiliated companies.
 
  The following is a summary of certain past, current and anticipated future
arrangements and transactions between or among CWM, the Company and their
respective affiliates. CWM anticipates that, if necessary and if the Merger
does not occur, it will be able to negotiate an extension through December 31,
1995 of the agreements described below which expire on December 31, 1994.
However, there can be no assurance that the Company will agree to any such
extension and there can be no assurance as to the terms and conditions which
the Company may request in connection with any such extension or any agreement.
 
INTERNATIONAL TRANSACTIONS
 
 Acquisition of Waste Management International Interest
 
  In 1990, pursuant to an agreement among the Company, CWM, WTI and a
predecessor of Waste Management International, the predecessor granted to each
of CWM and WTI an option to purchase 15% of the common voting stock of such
predecessor for an amount equal to 85% of its fair market value. In 1991, CWM
exercised the option. The purchase price of $168,974,000 was based upon a
valuation analysis of
 
                                       64
<PAGE>
 
the predecessor prepared by an independent investment banking firm and was paid
in CWM's case by delivery to the predecessor of notes of a subsidiary of the
predecessor acquired by CWM from the Company in exchange for the issuance to
the Company of a 6% subordinated debenture due 2001, convertible into CWM
Shares at a conversion price of $21.00 per share. As a result of a corporate
restructuring of Waste Management International's predecessor completed in
1992, each of CWM and WTI acquired a 15% equity interest in Waste Management
International, which now indirectly owns substantially all of the Company's
waste management services businesses outside of North America. In connection
with such restructuring, the shareholders of Waste Management International
contributed, on a pro rata basis, an additional $200,000,000 to the capital of
Waste Management International. CWM's share of such contribution was
$30,000,000. In 1992, the Company exercised its right to convert the
subordinated debenture and received 8,046,380 CWM Shares in such conversion. In
1992, CWM paid interest of $10,138,440 on the debenture. In late 1992, CWM
transferred its Waste Management International interest to Rust in connection
with Rust's formation. See "Business of CWM."
 
 International Business Opportunities Agreement
 
  CWM has also entered into an Amended and Restated International Business
Opportunities Agreement, as amended, with the Company, Rust, WTI, Waste
Management International and an affiliate of Waste Management International
pursuant to which, in part, CWM agreed that, in order to minimize the potential
for conflicts of interest among various subsidiaries under the common control
of the Company, the Company has the right to direct all business opportunities
to the Company-controlled subsidiary which, in the Company's reasonable and
good faith judgment, has the most experience and expertise in that line of
business. Opportunities in North America (other than those relating to
hazardous substance remediation services, which have been allocated to Rust)
relating to storage, processing, treatment or disposal of (i) radioactive
wastes, or (ii) hazardous wastes regulated under the Resource Conservation and
Recovery Act or wastes the storage, treatment or disposal of which as of
January 1993 was regulated under the Toxic Substances Control Act in the United
States, (iii) such wastes in Canada which would be so regulated in the United
States, or (iv) wastes in Mexico which are currently or in the future regulated
as hazardous or toxic under Mexican law, have been allocated to CWM.
Opportunities worldwide relating to (a) architectural services, (b) engineering
and design services, other than those relating to (1) chimneys and air
pollution control equipment and facilities, (2) facilities and systems for
water, wastewater and sewage treatment outside North America, but only (x)
where the customer is seeking third-party operation and maintenance services in
addition to those customarily involved in start-up and commissioning tests, or
(y) which are designed for treating hazardous waste streams, whether or not the
customer is seeking third-party operation and maintenance services, and (3)
waste-to-energy facilities outside of North America, (c) procurement,
construction and construction management services, including marine
construction and dredging, but excluding such services as they relate to (1)
hazardous substance remediation services outside North America, (2) chimneys
and air pollution control equipment and facilities, (3) facilities and systems
for water, wastewater and sewage treatment outside North America, but only (in
the case of facilities and systems falling within this item (3)) (x) where the
customer is seeking third-party operation and maintenance services in addition
to those customarily involved in start-up and commissioning tests, or (y) which
are designed for treating hazardous waste streams, whether or not the customer
is seeking third-party operation and maintenance services, and (4) waste-to-
energy facilities outside North America, (d) scaffolding services, (e)
demolition and dismantling services, (f) environmental consulting services,
including, without limitation, environmental facility siting and permitting
services, remedial investigations and feasibility studies, contaminant
assessments, risk assessments and air quality analyses, and (g) industrial
facility and power plant maintenance services, have been allocated to Rust, as
well as opportunities in North America relating to hazardous substance
remediation services.
 
  Pursuant to that Agreement, CWM and Rust also agreed not to conduct waste
management services operations, including, without limitation, collection,
transfer, recycling and land disposal of solid wastes; collection, storage,
processing, treatment or disposal of hazardous wastes (including hazardous
substance remediation services); the design, development, construction,
operation and maintenance of waste-to-energy
 
                                       65
<PAGE>
 
facilities; and the design, engineering and construction (where the customer is
seeking third-party operation and maintenance services in addition to those
customarily involved in start-up and commissioning tests), operation and
maintenance of facilities and systems for water, wastewater and sewage
treatment (including facilities for treating hazardous waste streams, whether
or not the customer is seeking third-party operation and maintenance services),
outside of North America until the later of July 1, 2000 and the date the
Company ceases to beneficially own a majority of the outstanding voting equity
interests of CWM or Rust, as the case may be, or a majority of all outstanding
voting equity interests of Waste Management International.
 
  The Amended and Restated International Business Opportunities Agreement is
the successor to a similar agreement originally entered into in 1992 in
connection with the initial public offering of Waste Management International.
That earlier agreement was itself the successor in part to a Master
Intercorporate Agreement entered into in 1990 by the Company, CWM and WTI in
connection with the Company's acquisition of a majority interest in WTI
containing, in pertinent part, similar provisions.
 
 International Development Agreement
 
  Pursuant to a Third Amended and Restated International Development Agreement,
CWM, Rust, WTI, the Company and certain of their affiliates have agreed that
for so long as the Company has beneficial ownership of a majority of the
outstanding shares of Waste Management International and so long as Rust has
beneficial ownership of shares having not less than 10% of the voting power of
Waste Management International, each of CWM, Rust and WTI will vote their Waste
Management International shares so that one designee of Rust (or such greater
number as shall equal the total number of directors multiplied by the
percentage of outstanding Waste Management International shares beneficially
owned by Rust, reduced to the nearest whole number) will be elected to the
Board of Directors of Waste Management International. Mr. Buntrock has been
designated as Rust's designee. CWM has an option, which has been assigned to
Rust, to maintain beneficial ownership of Waste Management International
outstanding shares at a level having not less than 10% of the voting power of
outstanding Waste Management International securities. In addition, Rust has
granted to the Company a right of first refusal with respect to its beneficial
interest in the Waste Management International shares, the Company has granted
to Rust certain participation rights with respect to a disposition of Waste
Management International shares and Waste Management International has granted
to Rust rights to participation and demand registrations under the Securities
Act and rights to have Waste Management International facilitate sales in
offerings made outside of the United States.
 
  The Third Amended and Restated International Development Agreement is the
successor in part to several earlier agreements originally entered into in 1990
in connection with the Company's acquisition of a majority position in WTI.
 
 Other International Transactions
 
  CWM is also a party to a master licensing agreement with the Company, WTI,
Waste Management International and Rust whereby Waste Management International
agreed to license intellectual property to CWM, the Company, WTI and Rust, and
those parties agreed to license intellectual property to Waste Management
International. Licenses are to be granted on request and are to provide for the
payment of royalties determined on an arms-length basis. The master agreement
is to remain in effect until the later of July 1, 2000 and the date the Company
ceases to own beneficially a majority of the outstanding voting interests of
one or more of the other parties.
 
ORGANIZATION OF RUST
 
  Pursuant to an Organizational Agreement among Brand, CWM and WTI, on January
1, 1993, CWM contributed to Rust, in exchange for 46,682,031 shares of Rust
common stock, or approximately 58% of the outstanding capital stock of Rust:
(i) 100% of its ownership in Brand, which amounted to 12,575,870 shares, or 56%
of the outstanding common stock of Brand; (ii) its hazardous substance
remediation services business,
 
                                       66
<PAGE>
 
consisting primarily of CWM Remedial Services Group, Inc.; (iii) beneficial
ownership of all Waste Management International ordinary shares owned by CWM,
constituting 12% of the outstanding ordinary shares of Waste Management
International, together with all of CWM's rights attendant to such shares; and
(iv) an aggregate of $141,000,000 in principal amount of indebtedness
outstanding under that certain Temporary Funding Agreement dated February 22,
1991, as amended, between Brand and CWM. At the same time, WTI contributed to
Rust, in exchange for 33,216,060 shares of Rust common stock, or approximately
42% of the outstanding capital stock of Rust: (i) 100% of the outstanding
common stock of its two principal engineering, construction and environmental
and infrastructure consulting businesses, SEC Donohue Inc. and Rust
International Corporation (Delaware); (ii) 100% of the common stock of its
London-based international engineering and consulting business, Wheelabrator
Technologies International Holdings Inc.; (iii) certain disposal credits in the
aggregate amount of $30,000,000 at facilities owned or operated by WMI; and
(iv) an aggregate of $68,000,000 in cash, notes receivable and pre-funded
acquisition costs. In addition, the Company, CWM, WTI, Rust and various of
their affiliates entered into various ancillary agreements and the parties
agreed to cause Rust to repay to CWM the outstanding indebtedness of CWM's
hazardous substance remediation services subsidiary in the aggregate principal
amount of $75,000,000. This transaction was approved by the independent members
of the Boards of Directors of CWM, WTI and Brand.
 
  On January 1, 1993, Rust, Brand and Rust Services Inc., a wholly owned
subsidiary of Rust, entered into an Agreement and Plan of Merger pursuant to
which Brand was merged into Rust Services Inc. Each share of Brand common stock
outstanding immediately prior to the effective time of the merger (other than
shares of Brand common stock held by Rust or held in the treasury of Brand,
which were cancelled) was converted, at the option of the holder thereof, into
one share of common stock of Rust or the right to receive $18.75 in cash. The
cost (approximately $130,000,000) of acquiring the Brand shares exchanged for
cash was financed through Rust's credit facility with the Company described
below.
 
CASH MANAGEMENT, FINANCING AND RELATED ARRANGEMENTS
 
  CWM and the Company have entered into an agreement under which the Company
will manage CWM's cash and fund CWM's cash requirements, up to a maximum of
$810,000,000, from year to year until terminated as of the end of a calendar
year upon 30 days' notice. The Company will make demand loans to CWM, at a rate
equivalent to the Company's effective rate for 30-day commercial paper plus
such number of basis points as effectively reimburses the Company for its
expenses in obtaining funds. The Company will also make term loans, at the
option of CWM, with maturities up to ten years, at rates equivalent to the
Company's cost for loans of similar duration, or such floating rates of
interest as may be agreed upon. If CWM is in a positive cash position with the
Company, CWM is entitled to interest at a rate based on the Company's 30-day
commercial paper rate. If CWM demonstrates the availability to it of better
returns on short-term investments or lower borrowing costs, the Company has
agreed to provide such terms to CWM. Such transactions resulted in aggregate
interest charges to CWM of $8,195,545 during 1991, $16,568,967 during 1992,
$20,955,989 during 1993 and $23,378,319 for the first nine months of 1994, and
at December 31, 1993 and September 30, 1994, CWM owed the Company $744,304,833
and $794,720,268, respectively.
 
  The Company has also agreed to continue to provide CWM (at CWM's expense)
with all appropriate insurance coverages and bid, performance and other surety
bonds to the extent reasonably available, and to use all reasonable efforts to
furnish such corporate guarantees, letters of credit and bonds relating to
certain continuing federal environmental financial assurance mechanisms as CWM
may reasonably request, subject to certain limitations and conditions, from
year to year until terminated as of the end of a calendar year upon 30 days
notice. CWM has agreed to indemnify the Company against certain losses and
expenses that may be incurred by the Company in connection therewith. CWM's
allocable share of insurance costs will be determined on the basis of the risk
and loss experience rating system utilized by the Company.
 
  CWM, the Company, WTI and Rust have also entered into a Rust Intercorporate
Services Agreement pursuant to which the Company agreed to loan to Rust up to
$350,000,000, and provide Rust (at Rust's expense) with all appropriate
insurance coverages and bid, performance and other surety bonds to the extent
 
                                       67
<PAGE>
 
reasonably available, all on terms substantially similar to the Company's
arrangement with CWM described above. The arrangement is in effect until
December 31, 1997. In August 1993, the maximum amount of this credit facility
was increased to $450,000,000 until December 31, 1993, at which time Rust
executed a promissory note to the Company in the aggregate amount of
$100,000,000, bearing interest at an annual rate of 6% and maturing on December
31, 1998, and the maximum amount of the credit facility was reduced to
$350,000,000. On December 31, 1993, $50,000,000 outstanding under the credit
facility was converted into a five-year term loan bearing interest at an annual
rate of 6%. Such transactions resulted in aggregate interest charges to Rust of
$8,584,653 during 1993 and $13,646,392 for the first nine months of 1994, and
at December 31, 1993 and September 30, 1994, Rust owed the Company
approximately $390,000,000 and $409,200,000, respectively.
 
  Pursuant to that Agreement, CWM has agreed to reimburse Rust for certain
business development expenses in an amount not to exceed $10,000,000 in each of
1993 and 1994 (to induce Rust to develop and implement a business development
program with a particular emphasis on its hazardous substance remediation
services business). Rust has the right to defer CWM's obligation to reimburse
such expenses from year to year until December 31, 1997. Such reimbursement for
1993 was deferred. Through September 1994, CWM reimbursed Rust in the amount of
approximately $7,300,000 pursuant to such arrangement. The timing or amount of
future such reimbursement payments cannot be predicted.
 
MANAGEMENT, TECHNICAL AND OTHER SERVICES
 
  CWM and the Company and their various subsidiaries provide services to each
other in the ordinary course of business. During 1991, 1992 and 1993, revenue
earned by CWM from the Company and its subsidiaries for such services was
$12,164,584, $19,575,258 and $217,404,417 (including $210,476,769 earned by
Rust from the Company and its subsidiaries), respectively, and operating
expenses charged to CWM by the Company and such subsidiaries for such services
in those years were $10,005,544, $5,287,628 and $16,762,692 (including
$12,332,175 charged to Rust by the Company and such subsidiaries),
respectively. In January 1992, CWM committed to dispose of a minimum of 770,000
tons of non-hazardous solid wastes in landfills owned or operated by
subsidiaries of the Company over the 24-month period ended December 31, 1993 at
negotiated rates which CWM believes were favorable. This commitment was
terminated by mutual agreement as of May 31, 1993.
 
  The Company, CWM and WTI have agreed that Rust will be a preferred vendor of
architectural, design, engineering, construction and construction management
services (including related procurement services), environmental consulting and
engineering services, hazardous substance remediation services, and industrial
maintenance and other industrial construction services of the type generally
offered by Rust and its subsidiaries. WTI is a preferred vendor to the Company
and CWM of certain engineered products and services and CWM is a preferred
vendor to a subsidiary of Rust of services of the type provided by CWM.
 
  In 1991, 1992 and 1993, CWM was charged an aggregate of approximately
$4,631,117, $5,190,209 and $9,795,000, respectively, by the Company and a
subsidiary for various administrative, accounting, financial and other
services. The Company has agreed to provide such services to CWM from year to
year until the arrangement is terminated as of the end of a calendar year upon
30 days' notice. Pursuant to such agreement, the Company is entitled to
reimbursement for its fully allocated costs of providing services.
 
  CWM leases certain office facilities, including CWM's corporate headquarters,
from the Company or the WMX Technologies, Inc. Pension Trust, and certain
chemical waste management facilities from subsidiaries of the Company, for
which CWM made payments aggregating $689,523 in 1991, $4,522,923 in 1992 and
$1,547,376 in 1993, consisting of rent and reimbursement of incidental costs.
In addition, CWM subleased certain facilities to the Company during 1993, for
which the Company paid rent of $133,000.
 
RUST SHAREHOLDERS' AGREEMENT
 
  Rust, WTI and CWM have entered into a Rust Shareholders' and Registration
Rights Agreement pursuant to which CWM and WTI each will have certain demand
and participation registration rights and rights of first refusal with respect
to Rust common stock. CWM and WTI also have the right to purchase
 
                                       68
<PAGE>
 
from Rust at fair market value such number of shares of Rust common stock as
may be necessary to maintain beneficial ownership of 51% and 22%, respectively.
A shareholder's right to purchase Rust common stock will terminate on the
earlier of (i) January 1, 2003, (ii) the April 30 in any calendar year
following a year in which the right is exercisable, the shareholder has failed
to exercise the right and such shareholder does not beneficially own at least
50% (in the case of CWM) or at least 20% (in the case of WTI) of Rust common
stock then outstanding, and (iii) the date on which such shareholder owns less
than 51% (in the case of CWM) or less than 22% (in the case of WTI) of such
Rust common stock then outstanding, as a direct result of transfers by such
shareholder. For so long as WTI or its subsidiaries own or have the option to
acquire at least 20% of the issued and outstanding shares of Rust common stock,
WTI will have the right to nominate two directors of Rust.
 
OTHER TRANSACTIONS
 
  The Company and certain of its subsidiaries, on one hand, and CWM, on the
other hand, have previously transferred various chemical waste management
businesses and other properties to each other and have conditionally agreed to
indemnify each other against liabilities and obligations, including unknown or
contingent environmental and other liabilities, if any, primarily related to
such businesses and properties transferred to them. Also, the Company has
conditionally agreed to indemnify CWM against liabilities and obligations
primarily related to certain chemical waste businesses which continue to be
owned by CWM, and previously agreed to retain certain chemical waste facilities
which the Company or its subsidiaries had acquired and which are no longer in
operation. In this connection, CWM has agreed until September 30, 2006, subject
to certain volume limitations, to provide treatment and disposal services at a
rate equal to its cost plus 10% in respect of hazardous wastes from sites owned
or used by the Company, and the Company has agreed to extend the same
arrangement to CWM in respect of non-hazardous wastes from sites owned or used
by CWM.
 
  CWM has granted to the Company the right to purchase from CWM such number of
shares of capital stock as may be necessary to enable the Company to
beneficially own, together with all other shares of capital stock of CWM
beneficially owned by the Company, capital stock having not less than 55% of
the voting power of all capital stock of CWM having power to vote in the
election of directors. This right is exercisable at any time when the Company
beneficially owns capital stock of CWM possessing less than 55% of such voting
power, and expires on the March 31 next following a December 31 as of which the
Company fails to own beneficially capital stock possessing more than 50% of the
voting power of all outstanding capital stock of CWM. The purchase price for
such shares will be the then current fair market value of such shares.
 
  In the ordinary course of business, various assets, including used vehicles,
equipment, land, leasehold improvements, furniture and fixtures, are
transferred at their net book value between CWM and the Company and their
respective affiliated companies. During 1991 and 1993, net transfers of such
assets to the Company and its affiliated companies from CWM amounted to an
aggregate of $1,374,328 and $8,174,913, respectively. During 1992, net
transfers of such assets to CWM from the Company and its affiliated companies
amounted to an aggregate of $267,912. Such amount in 1993 includes proceeds
from the sale to WMI of certain assets comprising a facility that manufactured
containers for CWM and WMI for $7,107,758, which was equivalent to their net
book value and which CWM believes was substantially equivalent to their fair
market value. The transaction was approved by the independent directors of CWM.
 
  In April 1993, CWM transferred to WMI certain assets and licensed to WMI
certain technology used in connection with the bioremediation of oil-
contaminated soils for an aggregate consideration of $2,500,000, which was
determined to be the fair market value of such assets and technology based on
management projections. At the time of the transfer, CWM's investment in those
assets and technology was approximately $19,000. The transaction was approved
by the independent directors of CWM.
 
  In connection with the 1988 offering by the Company of Company LYONs
exchangeable for CWM Shares and in consideration of an extension of the term of
the intercompany financing agreements described above, CWM agreed to use its
best efforts to maintain a current registration statement covering the CWM
Shares issuable upon exchange of the Company LYONs and to indemnify the Company
against certain
 
                                       69
<PAGE>
 
liabilities, including liabilities under the Securities Act, as they may relate
to the registration statement. If the Merger is consummated, the Company LYONs
will become convertible into Notes instead of CWM Shares, as provided above
under "The Merger Agreement -- Treatment of LYONs."
 
  In 1992, CWM sold to WTI all of the outstanding common stock of Sirrine
Environmental Consultants, Inc. ("Sirrine"). The purchase price of $40,000,000
was based upon a valuation analysis prepared by an independent investment
banking firm and was paid by delivery of 1,362,862 shares of WTI common stock.
CWM acquired Sirrine in March 1990 for $8,671,891. At the time of the sale to
WTI, CWM's investment in Sirrine was $18,008,634. As part of this transaction,
CWM agreed (which agreement has since been terminated) to purchase from WTI at
standard rates services of the type provided by Sirrine with a value of
$40,000,000 over the next five years.
 
  In 1990, in connection with the Company's acquisition of a majority interest
in WTI, CWM and the Company agreed that WTI would be the preferred vendor to
them of certain goods furnished by WTI. Pursuant to such arrangement, provided
that the value of WTI's goods at least equals that of third parties' goods, CWM
and the Company are to place all orders of $2 million or more with WTI.
 
                              SECURITIES OWNERSHIP
 
OWNERSHIP OF COMPANY SHARES
 
 By Company Directors and Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of Company Shares by the directors, the Chairman of
the Board and Chief Executive Officer and the four other most highly
compensated executive officers of the Company as of December 31, 1993, by each
of two individuals who ceased to be executive officers of the Company during
1993 but whose reportable salary and bonus would have placed them in the group
of the four other most highly compensated executive officers of the Company,
and by all directors and persons serving as executive officers of the Company
and such two individuals as a group:
<TABLE>
<CAPTION>
                                             NUMBER OF COMPANY    PERCENT OF
                                                   SHARES        OUTSTANDING
                                             BENEFICIALLY OWNED COMPANY SHARES
NAME                                               (1)(2)           (2)(3)
- ----                                         ------------------ --------------
<S>                                          <C>                <C>
Dean L. Buntrock............................      3,138,800            *
Phillip B. Rooney...........................        749,838            *
H. Jesse Arnelle............................          9,300            *
Howard H. Baker, Jr.........................         22,000            *
Pastora San Juan Cafferty...................            300            *
Jerry E. Dempsey............................        540,393            *
Donald F. Flynn.............................        537,667            *
Peter H. Huizenga...........................      8,131,655          1.7
Peer Pedersen...............................        212,597            *
James R. Peterson...........................         82,400            *
Alexander B. Trowbridge.....................         20,000            *
James E. Koenig.............................         89,729            *
J. Steven Bergerson.........................        212,516            *
Thomas C. Hau...............................         51,781            *
William P. Hulligan.........................        166,969            *
D. P. Payne.................................         71,939            *
All directors and executive officers as a
 group including persons named above (18
 persons)...................................     14,181,903          2.9
</TABLE>
- --------
(1) Directors and executive officers included in the group have sole voting
    power and sole investment power over shares listed, except (i) shares
    covered by options granted under the Company's stock option plans which
    were exercisable within 60 days of October 15, 1994; (ii) shares held
    pursuant to the
 
                                       70
<PAGE>
 
   Profit Sharing Plan; and (iii) Messrs. Bergerson, Buntrock, Huizenga,
   Pedersen and Rooney, and all executive officers and directors as a group
   (including such individuals), who have shared voting and investment power
   over 850, 133,093, 224,394, 12,597, 23,932 and 431,722 shares, respectively.
   Such shares shown for Messrs. Buntrock, Huizenga, Pedersen and Rooney are
   held in trusts or foundations over which such individuals share voting and
   investment power with other co-trustees or directors of such trusts or
   foundations, and such shares shown for Mr. Bergerson are held jointly with
   his spouse. Ownership of shares shown for Messrs. Buntrock, Dempsey,
   Huizenga, Koenig and Rooney, and for all executive officers and directors as
   a group, includes Company Shares not held directly by them but held by or
   for the benefit of (i) their spouses or (ii) their minor children and other
   children residing with them, as to which they have neither investment power
   nor voting power. Shares were held by or for the benefit of such spouses or
   children of the following persons and the executive officers and directors
   as a group at October 15, 1994, in the amounts indicated: Mr. Buntrock--
   40,352 (held by spouse); Mr. Dempsey--1,000 (held by spouse); Mr. Huizenga--
   680,778 (held by spouse directly and as trustee); Mr. Koenig--30 (held by
   spouse); Mr. Rooney--106,450 (held directly by adult child and by spouse
   directly and as trustee for children); and all executive officers and
   directors as a group (including such individuals)--828,929. Additionally,
   ownership of shares shown for Mr. Koenig includes 1,200 shares held by him
   as trustee of a family trust in which he has no pecuniary interest. Each of
   the above named persons and the members of such group disclaim any
   beneficial ownership of such shares.
(2) The numbers and percentages of shares shown in the table above are based on
    the assumption that currently outstanding stock options covering Company
    Shares which were exercisable within 60 days of October 15, 1994 had been
    exercised as follows: Mr. Arnelle--9,000; Mr. Baker--20,000; Mr.
    Bergerson--62,748; Mr. Buntrock--296,532; Mr. Dempsey--120,373; Mr. Flynn--
    29,893; Mr. Hau--51,752; Mr. Hulligan--85,942; Mr. Koenig--56,215; Mr.
    Payne--71,739; Mr. Rooney--223,311; Mr. Trowbridge-- 20,000; and all
    executive officers and directors as a group (including such individuals)--
    1,146,806. Such persons and the members of such group disclaim any
    beneficial ownership of the shares subject to such options.
(3) The Company does not know of any person who, as of October 15, 1994, owned
    more than five percent of the outstanding Company Shares.
 
 By CWM Directors and Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of Company Shares by the directors of CWM, the
President and Chief Executive Officer and the four other most highly
compensated executive officers of CWM as of December 31, 1993, and all
directors and persons serving as executive officers of CWM as a group:
 
<TABLE>
<CAPTION>
                                       NUMBER OF COMPANY
                                            SHARES
                                         BENEFICIALLY    PERCENT OF OUTSTANDING
NAME                                      OWNED(1)(2)      COMPANY SHARES(2)
- ----                                   ----------------- ----------------------
<S>                                    <C>               <C>
Dean L. Buntrock......................     3,138,800                *
James B. Edwards......................         1,200                *
Donald F. Flynn.......................       537,667                *
Jerome D. Girsch......................       221,661                *
Kay Hahn Harrell......................         2,200                *
Peter H. Huizenga.....................     8,131,655              1.7
James E. Koenig.......................        89,729                *
D. P. Payne...........................        71,939                *
Peer Pedersen.........................       212,597                *
Phillip B. Rooney.....................       749,838                *
James T. Banks........................         3,639                *
Rodger D. Henson......................        16,502                *
Richard C. Scherr.....................           800                *
All directors and executive officers
 as a group
 including persons named above (14
 persons).............................    13,178,227              2.7
</TABLE>
- --------
   *Less than one percent
 
                                       71
<PAGE>
 
(1) The above named persons and members of such group have sole voting power
    and sole investment power over shares listed, except for (i) shares covered
    by options granted under the Company's stock option plans and which were
    exercisable within 60 days of October 15, 1994; (ii) shares held pursuant
    to the Profit Sharing Plan; and (iii) Messrs. Buntrock, Huizenga, Pedersen
    and Rooney, who have shared voting and investment power over 133,093,
    224,394, 12,597 and 23,932 shares, respectively. Such shares are held in
    trusts or foundations over which such individuals share voting and
    investment power with other co-trustees or directors of such trusts or
    foundations. Ownership of shares shown for Messrs. Buntrock, Girsch,
    Huizenga, Koenig and Rooney includes Company Shares not held directly by
    them but held by or for the benefit of (i) their spouses or (ii) their
    minor children and other children residing with them, as to which they have
    neither investment power nor voting power. Shares were held by or for the
    benefit of such spouses or children of the following persons at October 15,
    1994 in the amounts indicated: Mr. Buntrock--40,352 (held by spouse); Mr.
    Girsch--27,050 (held by spouse); Mr. Huizenga--680,778 (held by spouse
    directly and as trustee); Mr. Koenig--30 (held by spouse); and Mr. Rooney--
    106,450 (held directly by adult child and by spouse directly and as trustee
    for children). Additionally, ownership of shares shown for Mr. Koenig
    includes 1,200 shares held by him as trustee of a family trust in which he
    has no pecuniary interest. Such persons and the members of such group
    disclaim any beneficial ownership of such shares.
(2) The numbers and percentages of shares as shown in the table are based on
    the assumption that currently outstanding stock options granted by the
    Company and exercisable within 60 days of October 15, 1994 had been
    exercised as follows: Mr. Buntrock--296,532; Mr. Flynn--29,893; Mr.
    Girsch--68,365; Mr. Koenig--56,215; Mr. Payne--71,739; Mr. Rooney--223,311;
    and Mr. Banks--3,616. Such persons disclaim any beneficial ownership of the
    shares subject to such options.
 
                                       72
<PAGE>
 
OWNERSHIP OF CWM SHARES
 
 By the Company, the Profit Sharing Plan and the Company's Directors and
Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of CWM Shares by the Company, certain plans and by
the directors, the Chairman of the Board and Chief Executive Officer and the
four other most highly compensated executive officers of the Company as of
December 31, 1993, by each of two individuals who ceased to be executive
officers of the Company during 1993 but whose reportable salary and bonus would
have placed them in the group of the four other most highly compensated
executive officers of the Company, and by all directors and persons serving as
executive officers of the Company and such two individuals as a group:
 
<TABLE>
<CAPTION>
                                              NUMBER OF CWM       PERCENT OF
                                           SHARES BENEFICIALLY   OUTSTANDING
                   NAME                      OWNED(1)(2)(3)    CWM SHARES(2)(3)
                   ----                    ------------------- ----------------
<S>                                        <C>                 <C>
WMX Technologies, Inc.....................     164,278,417           78.6%
  3003 Butterfield Road
  Oak Brook, Illinois 60521
WMX Technologies, Inc. Profit Sharing and
 Savings Plan.............................         922,392              *
Dean L. Buntrock..........................         630,305              *
Phillip B. Rooney.........................         640,419              *
H. Jesse Arnelle..........................               0              *
Howard H. Baker, Jr.......................               0              *
Pastora San Juan Cafferty.................               0              *
Jerry E. Dempsey..........................         400,934              *
Donald F. Flynn...........................         163,384              *
Peter H. Huizenga.........................               0              *
Peer Pedersen.............................          40,000              *
James R. Peterson.........................           5,200              *
Alexander B. Trowbridge...................           1,000              *
James E. Koenig...........................          47,422              *
J. Steven Bergerson.......................             900              *
Thomas C. Hau.............................              45              *
William P. Hulligan.......................          10,190              *
D. P. Payne...............................         162,484              *
All directors and executive officers as a
 group including
 individuals named above (18 persons).....       2,102,383            1.0
</TABLE>
- --------
   *Less than 1 percent.
(1) Directors and executive officers included in the group have sole voting
    power and sole investment power over CWM Shares listed, except (i) CWM
    Shares covered by options exercisable within 60 days of October 15, 1994;
    (ii) CWM Shares held pursuant to the Profit Sharing Plan; and (iii) Mr.
    Trowbridge, and all executive officers and directors as a group (including
    Mr. Trowbridge), who have shared voting and investment power over 1,000 and
    1,100 CWM Shares, respectively. Such CWM Shares shown for Mr. Trowbridge
    are held jointly with his spouse. Ownership of CWM Shares shown for Messrs.
    Bergerson and Dempsey includes CWM Shares not held directly by them but
    held by or for the benefit of (i) their spouses or (ii) their minor
    children and other children residing with them, as to which they have
    neither investment power nor voting power. CWM Shares were held by or for
    the benefit of such spouses or children of the following persons at October
    15, 1994, in the amounts indicated: Mr. Bergerson--900 (held by children);
    and Mr. Dempsey--2,000 (held by spouse). Each of the above named persons
    disclaim any beneficial ownership of such shares.
 
                                       73
<PAGE>
 
(2) Except for the CWM Shares shown for the Company, the numbers and
    percentages above exclude an aggregate of 164,278,417 CWM Shares
    beneficially owned by the Company that may be deemed to be beneficially
    owned by Messrs. Buntrock and Rooney because each such person may be deemed
    to be an affiliate of the Company. Each such person disclaims any
    beneficial ownership of such CWM Shares.
(3) The numbers and percentages of CWM Shares shown in the table above are
    based on the assumption that currently outstanding stock options covering
    CWM Shares which were exercisable within 60 days of October 15, 1994 had
    been exercised as follows: Mr. Buntrock--358,371; Mr. Dempsey--295,649; Mr.
    Flynn--163,384; Mr. Koenig--47,422; Mr. Payne--162,484; Mr. Rooney--
    529,265; and all executive officers and directors as a group (including
    such individuals)--1,556,575. Such persons and the members of such group
    disclaim any beneficial ownership of the CWM Shares subject to such
    options.
 
 By CWM Directors and Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of CWM Shares by the directors of CWM, the
President and Chief Executive Officer and the four other most highly
compensated executive officers of CWM as of December 31, 1993, and all
directors and persons serving as executive officers of CWM as a group:
 
<TABLE>
<CAPTION>
                                NUMBER OF CWM SHARES     PERCENT OF OUTSTANDING
NAME                         BENEFICIALLY OWNED(1)(2)(3)      CWM SHARES(2)(3)
- ----                         --------------------------- ----------------------
<S>                          <C>                         <C>
Dean L. Buntrock............            630,305                     *
James B. Edwards............             21,400                     *
Donald F. Flynn.............            163,384                     *
Jerome D. Girsch............             26,593                     *
Kay Hahn Harrell............              5,000                     *
Peter H. Huizenga...........                  0                     *
James E. Koenig.............             47,422                     *
D. P. Payne.................            162,484                     *
Peer Pedersen...............             40,000                     *
Phillip B. Rooney...........            640,419                     *
James T. Banks..............              6,583                     *
Rodger D. Henson............             58,308                     *
Richard C. Scherr...........             10,024                     *
All directors and executive
 officers as a group
 including persons named
 above (14 persons).........          1,819,354                     *
</TABLE>
- --------
   *Less than one percent
(1) The above persons and members of such group have sole voting power and sole
    investment power over shares listed, except for (i) shares covered by
    options granted under CWM's stock option plans which were exercisable
    within 60 days of October 15, 1994; and (ii) shares held pursuant to the
    Profit Sharing Plan. Ownership of shares shown for Dr. Edwards includes 400
    CWM Shares not held directly by him but held by his spouse, as to which he
    has neither investment power nor voting power. Dr. Edwards disclaims any
    beneficial ownership of such shares.
(2) Excludes 164,278,417 shares beneficially owned by the Company that may be
    deemed to be beneficially owned by Messrs. Buntrock and Rooney because each
    such person may be deemed to be an affiliate of the Company. Each such
    person disclaims beneficial ownership of such shares.
(3) The numbers and percentages of shares shown in the table are based on the
    assumption that currently outstanding stock options which were exercisable
    within 60 days of October 15, 1994 had been exercised as follows: Mr.
    Buntrock--358,371; Dr. Edwards--20,000; Mr. Flynn--163,384; Mr. Girsch--
    19,593; Ms. Harrell--4,000; Mr. Koenig--47,422; Mr. Payne--162,484; Mr.
    Rooney--529,265; Mr. Banks--6,583; Mr. Henson--58,308; Mr. Scherr--8,524;
    and all executive officers and directors as a group (including such
    individuals)--1,385,366. Such persons and the members of such group
    disclaim any beneficial ownership of the shares subject to such options.
 
                                       74
<PAGE>
 
  Sales of CWM Shares subsequent to October 15, 1994 were made in broker
transactions on the NYSE by the persons, at the prices, on the dates and in the
amounts indicated as follows:
 
<TABLE>
<CAPTION>
                              PRICE PER                             NUMBER OF
NAME                          CWM SHARE            DATE             CWM SHARES
- ----                          --------- --------------------------- ----------
<S>                           <C>       <C>                         <C>
J. Steven Bergerson.......... $    9.50            October 19, 1994      900(1)
Dean L. Buntrock.............      9.50           November 10, 1994  271,934
Jerry E. Dempsey.............      9.50            October 21, 1994   10,000
                                  9.625            October 24, 1994   30,000
                                  9.625            October 26, 1994    3,600
                                   9.50            October 31, 1994   10,000
                                   9.50            November 1, 1994    5,000
                                   9.50            November 7, 1994   10,400
                                   9.50           November 10, 1994    4,285
                                   9.50           November 17, 1994   30,000
Phillip B. Rooney............      9.50            October 20, 1994  109,916
                                  9.375            October 20, 1994    1,238
Donald A. Wallgren...........     9.375           November 10, 1994      100
Profit Sharing Plan.......... 7.75-9.50 October 17-December 7, 1994  113,500
</TABLE>
- --------
(1)CWM Shares formerly held by Mr. Bergerson's children.
 
  In addition, the Profit Sharing Plan purchased a total of 8,500 CWM Shares in
transactions on the NYSE on November 9 and November 23, 1994 at the price of
$9.50 per CWM Share.
 
OWNERSHIP OF WTI COMMON STOCK BY COMPANY DIRECTORS AND EXECUTIVE OFFICERS
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of WTI common stock by the directors, the Chairman
of the Board and Chief Executive Officer and the four other most highly
compensated executive officers of the Company as of December 31, 1993, by each
of two individuals who ceased to be executive officers of the Company during
1993 but whose reportable salary and bonus would have placed them in the group
of the four other most highly compensated executive officers of the Company,
and by all directors and persons serving as executive officers of the Company
and such two individuals as a group:
 
<TABLE>
<CAPTION>
                           NUMBER OF SHARES
                            OF WTI COMMON    PERCENT OF
                          STOCK BENEFICIALLY WTI COMMON
NAME                        OWNED(1)(2)(3)   STOCK(2)(3)
- ----                      ------------------ -----------
<S>                       <C>                <C>
Dean L. Buntrock........       135,000             *
Phillip B. Rooney.......       274,769             *
H. Jesse Arnelle........             0             *
Howard H. Baker, Jr.....             0             *
Pastora San Juan
 Cafferty...............             0             *
Jerry E. Dempsey........        34,336             *
Donald F. Flynn.........        45,245             *
Peter H. Huizenga.......             0             *
Peer Pedersen...........             0             *
James R. Peterson.......             0             *
Alexander B. Trowbridge.             0             *
James E. Koenig.........       121,500             *
J. Steven Bergerson.....             0             *
Thomas C. Hau...........             0             *
William P. Hulligan.....             0             *
D. P. Payne.............             0             *
All directors and
 executive officers as a
 group
 including persons named
 above (18 persons).....       851,050             *
</TABLE>
- --------
*  Less than 1 percent.
(1) Directors and executive officers included in the group have sole voting
    power and sole investment power over WTI shares listed, except (i) WTI
    shares covered by options exercisable within 60 days of October
 
                                       75
<PAGE>
 
   15, 1994; (ii) all executive officers and directors as a group, who have
   shared voting and investment power over a total of 200 WTI shares; and (iii)
   10,000 WTI shares deemed to be beneficially owned by each of Messrs.
   Buntrock, Flynn and Rooney as a result of restricted units granted pursuant
   to WTI's Restricted Unit Plan for Non-Employee Directors. Such persons
   disclaim any beneficial ownership of the WTI shares subject to such
   restricted units.
(2) Excludes an aggregate of 104,621,810 WTI shares beneficially owned by the
    Company that may be deemed beneficially owned by Messrs. Buntrock and
    Rooney because each such person may be deemed to be an affiliate of the
    Company. Excludes an aggregate of 1,025,724 WTI shares beneficially owned
    by CWM that may be deemed beneficially owned by Messrs. Koenig and Payne
    because each such person may be deemed to be an affiliate of CWM. Each such
    person disclaims any beneficial ownership of such WTI shares.
(3) The numbers and percentages of WTI shares shown in the table above are
    based on the assumption that currently outstanding stock options covering
    WTI shares which were exercisable within 60 days of October 15, 1994 had
    been exercised as follows: Mr. Buntrock--33,336; Mr. Koenig--120,000; and
    all executive officers and directors as a group (including such
    individuals)--393,336. Such persons and the members of such group disclaim
    any beneficial ownership of the shares subject to such options.
 
OWNERSHIP OF RUST COMMON STOCK
 
 By Company Directors and Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of Rust common stock by the directors, the Chairman
of the Board and Chief Executive Officer and the four other most highly
compensated executive officers of the Company as of December 31, 1993, by each
of two individuals who ceased to be executive officers of the Company during
1993 but whose reportable salary and bonus would have placed them in the group
of the four other most highly compensated executive officers of the Company,
and by all directors and persons serving as executive officers of the Company
and such two individuals as a group:
 
<TABLE>
<CAPTION>
                           NUMBER OF SHARES
                            OF RUST COMMON   PERCENT OF
                          STOCK BENEFICIALLY RUST COMMON
NAME                        OWNED(1)(2)(3)   STOCK(2)(3)
- ----                      ------------------ -----------
<S>                       <C>                <C>
Dean L. Buntrock........        15,000             *
Phillip B. Rooney.......        60,010             *
H. Jesse Arnelle........             0             *
Howard H. Baker, Jr.....             0             *
Pastora San Juan
 Cafferty...............             0             *
Jerry E. Dempsey........             0             *
Donald F. Flynn.........             0             *
Peter H. Huizenga.......             0             *
Peer Pedersen...........             0             *
James R. Peterson.......             0             *
Alexander B. Trowbridge.             0             *
James E. Koenig.........         5,084             *
J. Steven Bergerson.....             0             *
Thomas C. Hau...........             0             *
William P. Hulligan.....             0             *
D. P. Payne.............         8,000             *
All directors and
 executive officers as a
 group
 including persons named
 above (18 persons).....        95,162             *
</TABLE>
- --------
   *Less than 1 percent.
(1) Directors and executive officers included in the group have sole voting
    power and sole investment power over Rust shares listed, except (i) Rust
    shares covered by options exercisable within 60 days of October 15, 1994;
    and (ii) all executive officers and directors as a group, who have shared
    voting and investment power over a total of 400 Rust shares.
 
                                       76
<PAGE>
 
(2) Excludes an aggregate of 79,898,091 Rust shares beneficially owned by the
    Company that may be deemed beneficially owned by Messrs. Buntrock and
    Rooney because each such person may be deemed to be an affiliate of the
    Company. Excludes an aggregate of 46,682,031 Rust shares beneficially owned
    by CWM that may be deemed beneficially owned by Messrs. Koenig and Payne
    because each such person may be deemed to be an affiliate of CWM, and
    excludes an aggregate of 33,216,060 Rust shares beneficially owned by WTI
    that may be deemed beneficially owned by Mr. Koenig because he may be
    deemed to be an affiliate of WTI. Each such person disclaims any beneficial
    ownership of such Rust shares.
(3) The numbers and percentages of Rust shares shown in the table above are
    based on the assumption that currently outstanding stock options covering
    Rust shares which were exercisable within 60 days of October 15, 1994 had
    been exercised as follows: Mr. Koenig--3,334; Mr. Payne--8,000; Mr.
    Rooney-- 50,010; and all executive officers and directors as a group
    (including such individuals)--68,012. Such persons and members of such
    group disclaim any beneficial ownership of the shares subject to such
    options.
 
 By CWM Directors and Executive Officers
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of common stock of Rust by the directors of CWM,
the President and Chief Executive Officer and the four other most highly
compensated executive officers of CWM as of December 31, 1993, and all
directors and persons serving as executive officers of CWM as a group:
 
<TABLE>
<CAPTION>
                           NUMBER OF SHARES
                            OF RUST COMMON   PERCENT OF
                          STOCK BENEFICIALLY RUST COMMON
NAME                         OWNED(1)(2)      STOCK(2)
- ----                      ------------------ -----------
<S>                       <C>                <C>
Dean L. Buntrock........        15,000             *
James B. Edwards........             0             *
Donald F. Flynn.........             0             *
Jerome D. Girsch........             0             *
Kay Hahn Harrell........             0             *
Peter H. Huizenga.......             0             *
James E. Koenig.........         5,084             *
D. P. Payne.............         8,000             *
Peer Pedersen...........             0             *
Phillip B. Rooney.......        60,010             *
James T. Banks..........             0             *
Rodger D. Henson........             0             *
Richard C. Scherr.......             0             *
All directors and
 executive officers as a
 group
 including persons named
 above (14 persons).....        88,094             *
</TABLE>
- --------
*  Less than one percent
(1) The above named persons and members of such group have sole voting power
    and sole investment power over shares listed, except for Rust shares
    covered by options exercisable within 60 days of October 15, 1994. The
    table excludes 46,682,031 shares beneficially owned by CWM that may be
    deemed to be beneficially owned by Messrs. Buntrock, Girsch, Koenig, Payne
    and Rooney because each such person may be deemed to be an affiliate of
    CWM. Each such person disclaims any beneficial ownership of such shares.
(2) The numbers and percentages of shares shown in the table are based on the
    assumption that currently outstanding stock options granted by Rust and
    exercisable within 60 days of October 15, 1994 had been exercised as
    follows: Mr. Koenig--3,334; Mr. Payne--8,000; Mr. Rooney--50,010. Such
    persons disclaim any beneficial ownership of the shares subject to such
    options.
 
                                       77
<PAGE>
 
OWNERSHIP OF WASTE MANAGEMENT INTERNATIONAL ORDINARY SHARES BY COMPANY
DIRECTORS AND EXECUTIVE OFFICERS
 
  The following table sets forth certain information as of October 15, 1994 as
to the beneficial ownership of Waste Management International ordinary shares
(including ordinary shares represented by American Depositary Shares) by the
directors, the Chairman of the Board and Chief Executive Officer and the four
other most highly compensated executive officers of the Company as of December
31, 1993, by each of two individuals who ceased to be executive officers of the
Company during 1993 but whose reportable salary and bonus would have placed
them in the group of the four other most highly compensated executive officers
of the Company, and by all directors and persons serving as executive officers
of the Company as a group:
 
<TABLE>
<CAPTION>
                                    NUMBER OF
                          WASTE MANAGEMENT INTERNATIONAL           PERCENT OF
                           ORDINARY SHARES BENEFICIALLY  WASTE MANAGEMENT INTERNATIONAL
          NAME                    OWNED(1)(2)(3)             ORDINARY SHARES(2)(3)
          ----            ------------------------------ ------------------------------
<S>                       <C>                            <C>
Dean L. Buntrock........              156,534                           *
Phillip B. Rooney.......              153,334                           *
H. Jesse Arnelle........                    0                           *
Howard H. Baker, Jr.....                1,000                           *
Pastora San Juan
 Cafferty...............                    0                           *
Jerry E. Dempsey........                2,000                           *
Donald F. Flynn.........              233,334                           *
Peter H. Huizenga.......              550,000                           *
Peer Pedersen...........               10,000                           *
James R. Peterson.......                    0                           *
Alexander B. Trowbridge.                  600                           *
James E. Koenig.........               70,667                           *
J. Steven Bergerson.....                    0                           *
Thomas C. Hau...........               26,667                           *
William P. Hulligan.....               20,000                           *
D. P. Payne.............                1,000                           *
All directors and
 executive officers as a
 group including persons
 named above (18
 persons)...............            1,252,803                           *
</TABLE>
- --------
*  Less than 1 percent.
(1) Directors and executive officers included in the group have sole voting
    power and sole investment power over Waste Management International shares
    listed, except (i) Waste Management International shares covered by options
    exercisable within 60 days of October 15, 1994; and (ii) Messrs. Payne and
    Trowbridge, and all executive officers and directors as a group (including
    such individuals), who have shared voting and investment power over 1,000,
    600 and 2,600 Waste Management International shares, respectively. Such
    Waste Management International shares shown for Messrs. Payne and
    Trowbridge are held jointly with their respective spouses. Ownership of
    shares shown for Messrs. Buntrock, Dempsey and Huizenga includes Waste
    Management International shares not held directly by them but held by or
    for the benefit of (i) their spouses or (ii) their minor children, as to
    which they have neither investment power nor voting power. Waste Management
    International shares were held by or for the benefit of such spouses or
    children of the following persons at October 15, 1994 in the amounts
    indicated: Mr. Buntrock--3,000 (held by spouse); Mr Dempsey--2,000 (held by
    spouse) and Mr. Huizenga--30,000 (held by spouse). Each of the above named
    persons disclaim any beneficial ownership of such shares.
(2) Excludes an aggregate of 300,000,000 Waste Management International shares
    beneficially owned by the Company that may be deemed beneficially owned by
    Messrs. Buntrock and Rooney because each such person may be deemed to be an
    affiliate of the Company. Excludes an aggregate of 90,000,000 Waste
    Management International shares beneficially owned by WTI and Rust that may
    be deemed beneficially owned by Mr. Koenig because he may be deemed to be
    an affiliate of WTI and Rust. Each such person disclaims any beneficial
    ownership of such Waste Management International shares.
 
                                       78
<PAGE>
 
(3) The numbers and percentages of Waste Management International shares shown
    in the table above are based on the assumption that currently outstanding
    stock options covering Waste Management International shares which were
    exercisable within 60 days of October 15, 1994 had been exercised as
    follows: Messrs. Buntrock, Flynn and Rooney--133,334 each; Mr. Hau--26,667;
    Mr. Koenig--66,667 and all executive officers and directors as a group
    (including such individuals)--520,003. Such persons and members of such
    group disclaim any beneficial ownership of the shares subject to such
    options.
 
                       COMPARISON OF STOCKHOLDERS' RIGHTS
 
GENERAL
 
  The Company and CWM are both Delaware corporations and thus the differences
in the rights of the Company stockholders and CWM stockholders are due to their
certificates of incorporation, their By-Laws and the Rights Agreement (the
"Rights Agreement") between the Company and Harris Trust and Savings Bank, as
Rights Agent. The following is a brief summary of the more significant of these
differences. Such summary is qualified in its entirety by reference to the
Company's Restated Certificate of Incorporation, as amended (the "Company
Certificate"), the Company's By-Laws (the "Company By-Laws") and the Rights
Agreement, which have been incorporated by reference as exhibits to the
Registration Statement, and CWM's Certificate of Incorporation (the "CWM
Certificate") and CWM's By-Laws (the "CWM By-Laws"), which are incorporated by
reference into CWM's 1993 Form 10-K Report. In addition, the Board of Directors
of the Company has adopted a policy providing that the Company shall not,
without further stockholder approval, issue for cash voting stock or securities
convertible into voting stock of the Company having a vote in excess of 10% of
the vote represented by all voting stock immediately subsequent to such
issuance to any person, entity or group, which issuance is made (a) in response
to a pending or threatened unsolicited attempt to acquire all of the shares of
the Company which acquisition attempt is not recommended to stockholders of the
Company by the Board or (b) to an employee stock ownership plan for the purpose
of deterring unsolicited attempts to acquire all of the shares of the Company
which are not yet pending or threatened. The policy does not prohibit any
issuance of voting stock pursuant to the Rights Agreement adopted by the
Company in 1987 and the policy is subject to the continuing fiduciary duties of
the Board to the stockholders of the Company.
 
AUTHORIZED CAPITAL
 
  The total number of shares of all classes of stock authorized to be issued by
CWM is 550 million shares, of which 50 million shares shall be preferred stock
and 500 million shares shall be common stock, and the total number of shares of
all classes of stock authorized to be issued by the Company is 1.55 billion
shares, of which 50 million shares shall be preferred stock and 1.5 billion
shares shall be common stock.
 
CLASSIFIED BOARD OF DIRECTORS
 
  The CWM Certificate and the Company Certificate each provide that their
respective Boards of Directors are divided into three classes of directors
serving staggered three-year terms. As a result, approximately one-third of
each of the CWM and the Company boards are elected each year.
 
NUMBER OF DIRECTORS; REMOVAL; FILLING VACANCIES
 
  The CWM Certificate and the Company Certificate each provides that the number
of directors is fixed by the companies' respective By-Laws (subject to the
limits set forth in their respective certificates of incorporation), and the
respective Certificates and By-Laws further provide that vacancies and newly
created directorships shall be filled by a majority of directors then in
office, although less than a quorum, or by a sole remaining director; provided,
that under the By-Laws of each company, if the number of directors then in
office constitutes less than a majority of the whole board as constituted
immediately prior to such vacancies or newly created directorship, upon the
application of any stockholder or stockholders holding at least 10
 
                                       79
<PAGE>
 
percent of the total number of shares outstanding having the right to vote for
such directors, the Court of Chancery of the State of Delaware may summarily
order an election to fill such vacancies or newly created directorship or to
replace the directors chosen by the directors then in office. In addition, each
of CWM and the Company has adopted Emergency By-Laws which provide that in the
event the Board of Directors should be unable to function by reason of
vacancies on the Board of Directors due to, among other things, death or
incapacity, an Emergency Management Committee, as appointed or consisting of
members chosen in a manner determined by, and to the extent authorized by, the
Board of Directors, shall have and may exercise the powers of the Board of
Directors and shall be deemed to constitute the Board of Directors until such
time as a Board of Directors has been elected by the companies' respective
stockholders and duly qualified.
 
  The CWM Certificate and By-Laws and the Company Certificate and By-Laws each
provide that each director shall serve until the annual meeting of stockholders
in the year in which his or her term expires and his or her successor is duly
elected and qualified, subject to his or her prior death, retirement,
resignation or removal for cause.
 
NO COMPANY STOCKHOLDER ACTION BY WRITTEN CONSENT; SPECIAL MEETINGS
 
  Unlike the CWM Certificate, the Company Certificate provides that stockholder
action can be taken only at an annual or special meeting of stockholders and
specifically prohibits stockholder action by written consent in lieu of a
meeting.
 
  The CWM Certificate and By-Laws and the Company Certificate and By-Laws
provide that a special meeting of stockholders may be called only by the
President or the Secretary or by resolution of the Board of Directors,
including a majority of the Continuing Directors (defined as each director who
was a member of the Board prior to the time a person became an Interested
Stockholder (as defined below) and who was not affiliated or associated with
such Interested Stockholder, or proposed for election as a director by or on
behalf of such Interested Stockholder, and any successor to such a Continuing
Director who is not affiliated or associated with the Interested Stockholder
and is recommended to succeed a Continuing Director by the majority of such
Continuing Directors) if at the time in question an Interested Stockholder
exists (defined in part as any person, other than (i) with respect to the
Company, the Company, or, with respect to CWM, CWM or the Company, (ii) their
respective subsidiaries or (iii) their respective employee benefit plans or any
trustee or fiduciary with respect to any such plans, which, together with
affiliates and associates, was the beneficial holder of more than 5% of the
outstanding shares of common stock or was within the past two years the
beneficial holder of more than 5% of the outstanding shares of common stock.)
The Company Certificate and By-Laws also permit the Chairman of the Board of
Directors to call a special meeting. Both the Company By-Laws and the CWM By-
Laws provide that the business to be transacted at any special meeting shall be
limited to the purposes specified in the notice of meeting.
 
ADVANCE NOTICE PROVISIONS FOR STOCKHOLDER PROPOSALS AND STOCKHOLDER NOMINATIONS
OF DIRECTORS
 
  The CWM By-Laws and the Company By-Laws each establish an advance notice
procedure with regard to the nomination, other than by the Board of Directors
or a committee thereof, of candidates for election as directors (the
"Nomination Procedure") and with regard to certain matters to be brought before
an annual meeting of stockholders (the "Business Procedure").
 
  The Business Procedure provides that at an annual meeting, subject to any
other applicable requirements, only such business may be conducted as has been
brought before the meeting by, or at the direction of, the Board of Directors
or by a stockholder who has given timely prior written notice, in proper form,
to the Secretary. In all cases, to be timely, notice must be received not less
than 30 days nor more than 60 days prior to the meeting (or if fewer than 40
days' notice or prior public disclosure of the meeting date is given or made to
stockholders, not later than the tenth day following the day on which such
notice of the date of the annual meeting was mailed or such public disclosure
was made). Under the Business Procedure, to be in proper form, notice relating
to the conduct of other business at an annual meeting must contain certain
 
                                       80
<PAGE>
 
information about such business and about the stockholder who proposes to bring
such business before the meeting, including a brief description of the business
the stockholder proposes to bring before the meeting, the reasons for
conducting such business at such meeting, the name and address, as they appear
on the books of the corporation, of the stockholder proposing such business,
the class and number of shares owned by such stockholder as of the record date,
and any material interest of such stockholder in the business so proposed. If
the Chairman of the annual meeting determines that such other business was not
properly brought before such meeting in accordance with the Business Procedure,
such business will not be conducted at such meeting.
 
  The Nominating Procedure provides that only persons who are nominated by, or
by a committee appointed by, the Board of Directors or by a stockholder who has
given timely prior written notice, in proper form, to the Secretary prior to
the meeting at which directors are to be elected, shall be eligible for
election as directors. In all cases, to be timely, notice must be received not
less than 30 days nor more than 60 days prior to the meeting (or if fewer than
40 days' notice or prior public disclosure of the meeting date is given or made
to stockholders, not later than the tenth day following the day on which such
notice was mailed or such public disclosure was made). Under the Nomination
Procedure, to be in proper form, notice from a stockholder who proposes to
nominate a person at a meeting for election as a director must contain certain
information about the proposed nominee, including age, business and residence
addresses, principal occupation, the class and number of shares of stock
beneficially owned and such other information as would be required to be
included in a proxy statement soliciting proxies for the election of the
proposed nominee, and certain information about the stockholder proposing to
nominate that person. Under the Nomination Procedure, any person nominated by
the Board of Directors or by a committee appointed by the Board may be
requested to furnish the information that would be required to be set forth in
a stockholder's notice of nomination with respect to such nominee. The Chairman
of the meeting may determine that a person was not nominated in accordance with
the Nomination Procedure, and that the defective nomination shall be
disregarded.
 
TRANSACTIONS WITH INTERESTED STOCKHOLDERS
 
  Both CWM and the Company are governed by the provisions of Section 203 of the
DGCL ("Section 203"). Section 203 prevents an "Interested Stockholder" (defined
for purposes of Section 203 as a person beneficially owning 15% or more of a
corporation's voting stock) from engaging in a "Business Combination" (as
defined in Section 203) with a Delaware corporation for three years following
the date such person became an Interested Stockholder unless: (i) before such
person became an Interested Stockholder, the Board of Directors of the
corporation approved the transaction in which the Interested Stockholder became
an Interested Stockholder; (ii) upon consummation of the transaction which
resulted in the Interested Stockholder becoming an Interested Stockholder, the
Interested Stockholder owned at least 85% of the voting stock of the
corporation outstanding at the time the transaction commenced (excluding stock
held by directors who are also officers and employee stock ownership plans that
do not provide for confidential voting by plan participants); or (iii)
following the transaction in which such person became an Interested
Stockholder, the Business Combination is (x) approved by the Board of Directors
of the corporation and (y) authorized at a meeting of stockholders by the
affirmative vote of the holders of 66 2/3% of the outstanding voting stock of
the corporation not owned by the Interested Stockholder. Section 203 may impede
takeovers that in some circumstances might be beneficial to stockholders of the
Company.
 
  The CWM Certificate and the Company Certificate each contain provisions which
prevent "greenmail" payments or the repurchase of any shares of common stock
from Interested Stockholders, as defined in the respective certificates, at a
price greater than the Fair Market Value of such shares (defined as the closing
sale price on the NYSE on the trading date immediately preceding the date in
question) and provisions which establish safeguards in connection with certain
Business Transactions with any Interested Stockholder, which Business
Transaction has not been approved by majority vote of the Continuing Directors
(generally, requiring approval of the holders of at least a majority of the
outstanding shares of common stock, other
 
                                       81
<PAGE>
 
than common stock held by Interested Stockholders). Business Transaction is
generally defined as (a) any merger or consolidation of CWM or the Company,
respectively, with or into an Interested Stockholder, (b) any sale, lease or
other disposition of all or any "Substantial Portion" ($15,000,000) of assets
or securities of CWM or the Company, respectively, or any subsidiary thereof,
to or with an Interested Stockholder, (c) the issuance of any securities of the
Company or one of its subsidiaries to an Interested Stockholder, (d) any
recapitalization of CWM or the Company, respectively, the effect of which would
be to increase the voting power of an Interested Stockholder, (e) the adoption
of any plan for liquidation or dissolution of CWM or the Company, respectively,
proposed by or on behalf of an Interested Stockholder, and (f) any agreement,
contract or other arrangement providing for one or more of the actions
specified in the foregoing clauses (a) through (e).
 
AMENDMENT OF CERTAIN PROVISIONS OF THE CERTIFICATES
 
  The CWM Certificate and the Company Certificate each contain provisions
requiring the affirmative vote of the holders of at least 80% of the common
stock to amend certain provisions of the Certificate (including the provisions
relating to the number, term, removal and classification of directors, the
calling of special meetings, prevention of "greenmail" payments and
transactions with Interested Stockholders).
 
COMPANY RIGHTS
 
  In January 1987, the Company declared a dividend of one right (a "Right") for
each outstanding Company Share. Each Right entitles the registered holder to
purchase from the Company one four-hundredth of a share of Company Series A
Preferred Stock at a price of $68.75 (the "Exercise Price"), subject to
adjustment. The description and terms of the Rights are set forth in the Rights
Agreement.
 
  The Rights are evidenced by and transferred with and only with the Company
Shares until the earlier to occur of (i) ten days following a public
announcement that a person or group, including any affiliates or associates of
such person or group, acquired, or obtained the right to acquire, beneficial
ownership of 20% or more of the Company's outstanding voting stock (such person
or group being hereinafter known as an "Acquiring Person") or (ii) ten days
following the commencement of, or first public announcement of the intent to
commence (which intent to commence is not withdrawn within five business days),
a tender offer or exchange offer if, upon consummation thereof, the offeror
would be the beneficial owner of 30% or more of the Company's outstanding
voting stock (the earlier of such dates being called the "Distribution Date").
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights will be mailed to holders of record of Company Shares as
of the close of business on the Distribution Date. The Rights are not
exercisable until the Distribution Date and will expire on February 6, 1997,
unless earlier redeemed by the Company as described below. The Exercise Price
payable per Right, and the number of Rights or the number of shares of Company
Series A Preferred Stock or other securities or property issuable upon exercise
of the Rights, are subject to adjustment in certain events from time to time to
prevent dilution. Each Company Share issued upon conversion of any Note while
the Rights Agreement is in effect will also automatically have attached to it
one Right.
 
  Preferred Stock purchasable upon exercise of the Rights will be
nonredeemable. Each share of Company Series A Preferred Stock will have a
minimum preferential quarterly dividend rate of $5 per share, but will be
entitled to not less than an aggregate dividend of 400 times the dividend
declared on Company Shares. In the event of liquidation, the holders of the
Company Series A Preferred Stock will receive a preferential liquidation
payment equal to the greater of $100 or 400 times the payment made per Company
Share. Each share of Company Series A Preferred Stock will have 400 votes,
voting together with the Company Shares. In addition, the Company Series A
Preferred Stock contains class vote provisions paralleling the class vote
requirements for the Company's Shares which prevent "greenmail" payments by the
Company and establish safeguards in connection with certain business
transactions. Finally, in the event of any merger, consolidation or other
transaction in which outstanding Company Shares are exchanged, each share of
Company Series A
 
                                       82
<PAGE>
 
Preferred Stock will be entitled to receive 400 times the amount received per
Company Share. These rights are protected by customary antidilution provisions.
Because of the nature of the Company Series A Preferred Stock's dividend,
liquidation and voting rights, the value of one four-hundredth interest in a
share of Company Series A Preferred Stock purchasable upon exercise of each
Right is intended to approximate the value of one Company Share.
 
  In the event that the Company is acquired in a merger or other business
combination transaction, or 50% or more of its assets or earning power are sold
in one transaction or a series of transactions, proper provision shall be made
so that each holder of a Right shall thereafter have the right to receive, upon
the exercise thereof at the then current Exercise Price of the Right, that
number of shares of common stock of the acquiring company (or, in the event
there is more than one acquiring company, the acquiring company receiving the
greatest portion of the assets or earning power transferred) which at the time
of such transaction would have a market value of two times the Exercise Price
of the Right. In the event that the Company is the surviving corporation in a
merger and the Company Shares are not changed or exchanged, or in the event
that an Acquiring Person engages in one of a number of self-dealing
transactions specified in the Rights Agreement, proper provision shall be made
so that each holder of a Right will thereafter have the right to receive, upon
exercise thereof at the then current Exercise Price, that number of shares of
Company Series A Preferred Stock having a market value of two times the
Exercise Price of the Right. Upon the occurrence of any of the transactions
referred to in this paragraph, any Rights that are or were at any time
beneficially owned by an Acquiring Person engaging in any of such transactions
or receiving the benefits thereof on or after the time the Acquiring Person
became such shall become void.
 
  With certain exceptions, no adjustment in the Exercise Price will be required
until cumulative adjustments require an adjustment of at least 1% in such
Exercise Price. No fractional shares need be issued (other than fractions which
are integral multiples of one one-hundredth of a share of Company Series A
Preferred Stock) and, in lieu thereof, an adjustment in cash may be made based
on the market price of the Company Series A Preferred Stock on the last trading
day prior to the date of exercise.
 
  At any time prior to ten days following a public announcement that an
Acquiring Person exists, the Company may redeem the Rights in whole, but not in
part, at a price of $.0125 per Right (the "Redemption Price"). Immediately upon
the action of the Board of Directors of the Company electing to redeem the
Rights, the right to exercise the Rights will terminate and the only right of
the holders of Rights will be to receive the Redemption Price.
 
  Until a Right is exercised, the holder thereof, as such, will have no rights
as a stockholder of the Company as a result of the ownership of the Right,
including, without limitation, the right to vote or to receive dividends.
 
  A copy of the Rights Agreement is available free of charge from the Company.
This summary description of the Rights does not purport to be complete and is
qualified in its entirety by reference to the Rights Agreement.
 
  CWM does not have a rights agreement.
 
GENERAL ANTI-TAKEOVER EFFECTS
 
  The foregoing Company and CWM "anti-takeover" provisions and, in the case of
the Company, the Rights issued pursuant to the Rights Agreement, together with,
in the case of CWM, the approximately 78.6% ownership position of the Company
before the Merger, may impede or, in the case of CWM before the Merger, prevent
takeovers that in some circumstances might be beneficial to the Company and CWM
stockholders. Such provisions, Rights and ownership position would not impede
or prohibit most takeovers approved by existing directors, and such provisions
and Rights are designed to enhance or have the effect of enhancing the ability
of the Board of Directors, and ultimately the stockholders, to negotiate with
potential acquirers from the strongest position. Such provisions, Rights and
ownership position do, however, have the
 
                                       83
<PAGE>
 
overall effect of making it more difficult in the case of the Company and
virtually impossible in the case of CWM without the approval of the directors
thereof to acquire and exercise control over the Company and CWM and to remove
incumbent officers and directors, thus providing such officers and directors
with enhanced ability to retain their positions. Such provisions might also
limit opportunities for stockholder participation in certain types of
transactions even though such transactions might be favored by a majority of
the stockholders.
 
LIABILITY AND INDEMNIFICATION OF OFFICERS AND DIRECTORS
 
  Section 145 of the DGCL empowers corporations to indemnify, subject to the
standards set forth therein, any person in connection with any action, suit or
proceeding brought or threatened by reason of the fact that he or she is or was
serving as a director, officer, employee or agent of the corporation or is or
was serving as such with respect to another corporation at the request of such
corporation. The DGCL also provides that corporations may purchase
indemnification insurance on behalf of any such director, officer, employee or
agent. The Company Certificate and By-Laws and the CWM Certificate and By-Laws
each provide for the indemnification by the Company or CWM, as the case may be,
of each director, officer, employee or agent of the Company or CWM, as the case
may be, to the fullest extent permitted by the DGCL, except as to any action
brought by or on behalf of such person without prior approval of the board of
directors of CWM or the Company, as the case may be.
 
  Section 102(b)(7) of the DGCL permits Delaware corporations to include in
their certificates of incorporation a provision eliminating or limiting the
personal liability of a director to the corporation or its stockholders for
monetary damages for breach of fiduciary duty of care as a director. The
Company Certificate and the CWM Certificate contain provisions which eliminate
the personal liability of the officers and directors of the Company and CWM in
certain circumstances.
 
  Under an insurance policy maintained by the Company, the directors and
officers of the Company are insured, within the limits and subject to the
limitations of the policy, against certain expenses in connection with the
defense of certain claims, actions, suits or proceedings, which may be brought
against them by reason of being or having been such directors and officers.
 
  CWM's officers and directors are covered by insurance policies providing them
(and their heirs and other legal representatives) with coverage against certain
liabilities arising from any negligent act, omission or breach of duty claimed
against them by reason of their being officers and directors of CWM. The
Company has agreed to maintain the above-described indemnification rights and
insurance for directors and officers of CWM pursuant to the Merger Agreement.
See "The Merger Agreement--Covenants."
 
                                    EXPERTS
 
  The audited Consolidated Financial Statements and Schedules of the Company
and subsidiaries and CWM and subsidiaries for the year ended December 31, 1993,
incorporated by reference in this Proxy Statement-Prospectus, have been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto, and are incorporated by reference herein in
reliance upon the authority of said firm as experts in auditing and accounting
in giving said reports. Reference is made to the reports of Arthur Andersen LLP
on such financial statements, which include an explanatory paragraph with
respect to the Company's and CWM's change in its methods of accounting for
income taxes and postretirement benefits other than pensions, effective January
1, 1992, as discussed in notes 1 and 9 to the Company's Consolidated Financial
Statements and notes 3 and 14 to CWM's Consolidated Financial Statements
incorporated by reference into this Proxy Statement-Prospectus.
 
                                       84
<PAGE>
 
                                 LEGAL MATTERS
 
  The validity under the DGCL of the Notes to be issued in the Merger and
certain other matters, including the tax consequences of the Merger, will be
passed upon for the Company by Bell, Boyd & Lloyd, Chicago, Illinois. At
October 31, 1994, partners and associates of Bell, Boyd & Lloyd had an
approximate aggregate beneficial ownership or interest in 4,577 Company Shares,
1,600 CWM Shares, 428 shares of WTI's common stock, 8,700 Waste Management
International American Depositary Shares (each of which represents two ordinary
shares of Waste Management International) and 1,000 shares of Rust's common
stock, including shares owned by their spouses, minor children and relatives
living in their households.
 
                         PROPOSALS BY CWM STOCKHOLDERS
 
  If the Merger is consummated, there will be no public stockholders of CWM and
no public participation in any future CWM stockholders meeting. However, if the
Merger is not consummated, CWM's public stockholders will continue to be
entitled to attend and participate in CWM stockholder meetings. If the Merger
is not consummated, any proposals by stockholders intended to be presented at
the 1995 annual meeting must have been received by CWM no later than November
30, 1994 in order to be considered by the Board of Directors for inclusion in
CWM's 1995 proxy statement. In order for a stockholder to nominate a candidate
for director, under CWM's By-Laws, timely notice of the nomination must be
received by CWM in advance of the meeting. Ordinarily, such notice must be
received not less than 30 nor more than 60 days before the meeting (but if CWM
gives less than 40 days' notice of the meeting, then such notice must be
received prior to the meeting and within 10 days after notice of the meeting is
mailed or other public disclosure of the meeting is made). The stockholder
filing the notice of nomination must describe various matters regarding the
nominee, including such information as name, address, occupation and shares
held.
 
  In order for a stockholder to bring other business before a stockholder
meeting, timely notice must be received by CWM within the time limits described
above. Such notice must include a description of the proposed business, the
reasons therefor, and other specific matters. These requirements are separate
from and in addition to the requirements a stockholder must meet to have a
proposal considered for inclusion in CWM's 1995 proxy statement.
 
  In each case, the notice must be given to the Secretary of CWM, whose address
is 3001 Butterfield Road, Oak Brook, Illinois 60521. Any stockholder desiring a
copy of CWM's By-Laws will be furnished one without charge upon written request
of the Secretary.
 
                 INCORPORATION OF SUBSEQUENTLY FILED DOCUMENTS
 
  In addition to all other documents incorporated by reference in this Proxy
Statement-Prospectus (see "Documents Incorporated by Reference"), all documents
filed by CWM and the Company pursuant to Sections 13(a), 13(c), 14 or 15(d) of
the Exchange Act after the date of this Proxy Statement-Prospectus and prior to
the date of the Special Meeting (or any adjournment or postponement thereof)
shall be deemed to be incorporated in this Proxy Statement-Prospectus by
reference and to be a part hereof from the date of filing of such documents.
Any statement contained in a document incorporated or deemed to be incorporated
by reference herein shall be deemed to be modified or superseded for purposes
of this Proxy Statement-Prospectus to the extent that a statement contained
herein or in any subsequently filed document which also is or is deemed to be
incorporated by reference herein modifies or supersedes such statement. Any
such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Proxy Statement-
Prospectus.
 
                                       85
<PAGE>
 
                                                                      APPENDIX A
 
 
 
                          AGREEMENT AND PLAN OF MERGER
 
                                  BY AND AMONG
 
                            WMX TECHNOLOGIES, INC.,
 
                              WMX MERGER SUB, INC.
 
                                      AND
 
                        CHEMICAL WASTE MANAGEMENT, INC.
 
                                OCTOBER 14, 1994
 
                            AS AMENDED AND RESTATED
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
ARTICLES                                                                    PAGE
- --------                                                                    ----
<S>                                                                         <C>
RECITALS..................................................................   A-1
I     THE MERGER; EFFECTIVE TIME; CLOSING.................................   A-1
 1.1  The Merger..........................................................   A-1
 1.2  Effective Time......................................................   A-1
 1.3  Closing.............................................................   A-1
II    ARTICLES OF INCORPORATION AND BY-LAWS OF THE SURVIVING CORPORATION..   A-1
 2.1  Articles of Incorporation...........................................   A-1
 2.2  By-Laws.............................................................   A-2
III   DIRECTORS AND OFFICERS OF THE SURVIVING CORPORATION.................   A-2
 3.1  Directors...........................................................   A-2
 3.2  Officers............................................................   A-2
IV    MERGER CONSIDERATION; CONVERSION OR CANCELLATION OF SHARES IN THE
      MERGER..............................................................   A-2
 4.1  Merger Consideration; Conversion or Cancellation of Shares in the
      Merger..............................................................   A-2
 4.2  Payment for Shares in the Merger....................................   A-3
 4.3  Fractional Notes....................................................   A-3
 4.4  Transfer of Shares After the Effective Time.........................   A-4
 4.5  Stock Options.......................................................   A-4
 4.6  Liquid Yield OptionTM Notes due 2010................................   A-4
 4.7  Dissenting Shares...................................................   A-4
V     REPRESENTATIONS AND WARRANTIES OF THE COMPANY.......................   A-5
 5.1  Corporate Organization and Qualification............................   A-5
 5.2  Capitalization......................................................   A-5
 5.3  Authority Relative to This Agreement................................   A-5
 5.4  Consents and Approvals; No Violation................................   A-6
 5.5  SEC Reports; Financial Statements...................................   A-6
 5.6  Absence of Certain Changes or Events................................   A-6
 5.7  Undisclosed Liabilities.............................................   A-6
 5.8  Litigation..........................................................   A-7
 5.9  S-4 Registration Statement; Schedule 13E-3; Proxy Statement/
      Prospectus..........................................................   A-7
 5.10 Environmental Laws and Regulations..................................   A-7
 5.11 Compliance with Applicable Laws.....................................   A-7
 5.12 Opinion of Financial Advisor........................................   A-8
VI    REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB.............   A-8
 6.1  Corporate Organization and Qualification............................   A-8
 6.2  Capitalization......................................................   A-8
 6.3  Authority Relative to This Agreement................................   A-8
 6.4  Consents and Approvals; No Violation................................   A-9
 6.5  SEC Reports; Financial Statements...................................   A-9
 6.6  Absence of Certain Changes or Events................................  A-10
 6.7  Undisclosed Liabilities.............................................  A-10
 6.8  Litigation..........................................................  A-10
</TABLE>
   
                                       i
<PAGE>
 
<TABLE>
<CAPTION>
ARTICLES                                                                    PAGE
- --------                                                                    ----
<S>                                                                         <C>
  6.9   S-4 Registration Statement; Schedule 13E-3; Proxy Statement/
        Prospectus........................................................  A-10
  6.10  Authorization for Notes and Parent Common Shares..................  A-10
  6.11  Interim Operations of Merger Sub..................................  A-11
  6.12  Environmental Laws and Regulations................................  A-11
  6.13  Compliance with Applicable Laws...................................  A-11
  6.14  Ownership of Shares...............................................  A-11
VII ADDITIONAL COVENANTS AND AGREEMENTS...................................  A-11
  7.1   Stockholders' Approval............................................  A-11
  7.2   Registration Statement............................................  A-12
  7.3   All Reasonable Efforts............................................  A-12
  7.4   Access to Information.............................................  A-12
  7.5   Publicity.........................................................  A-12
  7.6   Indemnification of Officers and Directors.........................  A-13
  7.7   Blue Sky Permits..................................................  A-13
  7.8   NYSE Listing......................................................  A-13
  7.9   Conduct of Business of Merger Sub.................................  A-14
  7.10  Parent Common Shares..............................................  A-14
VIII CONDITIONS...........................................................  A-14
  8.1   Condition to Each Party's Obligations.............................  A-14
  8.2   Additional Conditions to the Obligations of Parent and Merger Sub.  A-14
  8.3   Additional Conditions to the Obligations of the Company...........  A-15
IX  TERMINATION...........................................................  A-15
  9.1   Termination by Mutual Consent.....................................  A-15
  9.2   Termination by Either Parent or the Company.......................  A-15
  9.3   Termination by Parent.............................................  A-16
  9.4   Termination by the Company........................................  A-16
  9.5   Effect of Termination.............................................  A-16
X   MISCELLANEOUS AND GENERAL.............................................  A-16
  10.1  Payment of Expenses...............................................  A-16
  10.2  Survival of Representations and Warranties........................  A-16
  10.3  Modification or Amendment.........................................  A-17
  10.4  Waiver of Conditions..............................................  A-17
  10.5  Counterparts......................................................  A-17
  10.6  Governing Law.....................................................  A-17
  10.7  Notices...........................................................  A-17
  10.8  Entire Agreement; Assignment......................................  A-18
  10.9  Parties in Interest...............................................  A-18
  10.10 Certain Definitions...............................................  A-18
  10.11 Obligation of Parent..............................................  A-18
  10.12 Validity..........................................................  A-18
  10.13 Captions..........................................................  A-18
</TABLE>
  
                                       ii
<PAGE>
 
                          AGREEMENT AND PLAN OF MERGER
 
  Agreement and Plan of Merger (this "Agreement"), dated as of October 14,
1994, by and among WMX Technologies, Inc., a Delaware corporation ("Parent"),
WMX Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of
Parent ("Merger Sub"), and Chemical Waste Management, Inc., a Delaware
corporation (the "Company").
 
                                    RECITALS
 
  Whereas, the Boards of Directors of Parent and Merger Sub each have
determined that it is in the best interests of their respective stockholders
for Merger Sub to merge with and into the Company upon the terms and subject to
the conditions of this Agreement; and
 
  Whereas, the Board of Directors of the Company, based upon the unanimous
recommendation of a special committee of independent directors of the Company
(the "Special Committee"), has determined that it is in the best interests of
the Company's stockholders for Merger Sub to merge with and into the Company
upon the terms and subject to the conditions of this Agreement.
 
  Now, Therefore, in consideration of the foregoing and the mutual
representations, warranties, covenants and agreements set forth herein, Parent,
Merger Sub and the Company hereby agree as follows:
 
                                   ARTICLE I
 
                      The Merger; Effective Time; Closing
 
  1.1 The Merger. Subject to the terms and conditions of this Agreement and the
Delaware General Corporation Law (the "DGCL"), at the Effective Time (as
defined in Section 1.2), the Company and Merger Sub shall consummate a merger
(the "Merger") in which (a) Merger Sub shall be merged with and into the
Company and the separate corporate existence of Merger Sub shall thereupon
cease, (b) the Company shall be the successor or surviving corporation in the
Merger and shall continue to be governed by the laws of the State of Delaware,
and (c) the separate corporate existence of the Company with all its rights,
privileges, immunities, powers and franchises shall continue unaffected by the
Merger. The corporation surviving the Merger is sometimes hereinafter referred
to as the "Surviving Corporation." The Merger shall have the effects set forth
in the DGCL.
 
  1.2 Effective Time. Subject to the terms and conditions of this Agreement,
Parent, Merger Sub and the Company will cause an appropriate Certificate of
Merger (the "Certificate of Merger") to be executed and filed on the date of
the Closing (as defined in Section 1.3) (or on such other date as Parent and
the Company may agree) with the Secretary of State of the State of Delaware as
provided in the DGCL. The Merger shall become effective at the time and on the
date on which the Certificate of Merger has been duly filed with the Secretary
of State of the State of Delaware or such other time as is agreed upon by the
parties and specified in the Certificate of Merger, and such time is
hereinafter referred to as the "Effective Time."
 
  1.3 Closing. The closing of the Merger (the "Closing") shall take place (a)
at the offices of WMX Technologies, Inc. in Oak Brook, Illinois at 10:00 a.m.
on the first business day following the date on which the last of the
conditions set forth in Article VIII hereof shall be fulfilled or waived in
accordance with this Agreement or (b) at such other place, time and date as
Parent and the Company may agree (the "Closing Date").
 
                                   ARTICLE II
 
       Articles of Incorporation and By-Laws of the Surviving Corporation
 
  2.1 Articles of Incorporation. The Certificate of Incorporation of Merger
Sub, as in effect immediately prior to the Effective Time, shall be the
Certificate of Incorporation of the Surviving Corporation, except that Article
I thereof shall be amended to read in its entirety as follows: "The name of the
Corporation is Chemical Waste Management, Inc."
 
                                      A-1
<PAGE>
 
  2.2 By-Laws. The By-Laws of Merger Sub, as in effect immediately prior to the
Effective Time, shall be the By-Laws of the Surviving Corporation.
 
                                  ARTICLE III
 
              Directors and Officers of The Surviving Corporation
 
  3.1 Directors. The directors of Merger Sub at the Effective Time shall, from
and after the Effective Time, be the directors of the Surviving Corporation
until their successors have been duly elected or appointed and qualified or
until their earlier death, resignation or removal in accordance with the
Surviving Corporation's Certificate of Incorporation and By-Laws.
 
  3.2 Officers. The officers of the Company at the Effective Time shall, from
and after the Effective Time, be the officers of the Surviving Corporation
until their successors have been duly elected or appointed and qualified or
until their earlier death, resignation or removal in accordance with the
Surviving Corporation's Certificate of Incorporation and By-Laws.
 
                                   ARTICLE IV
 
    Merger Consideration; Conversion or Cancellation of Shares in The Merger
 
  4.1 Merger Consideration; Conversion or Cancellation of Shares in the Merger.
At the Effective Time, by virtue of the Merger and without any action on the
part of the holders of any shares (the "Shares") of common stock, $.01 par
value per share, of the Company (the "Company Common Stock") or capital stock
of Merger Sub:
 
    (a) Each Share issued and outstanding immediately prior to the Effective
  Time (other than Shares to be cancelled pursuant to Section 4.1(c) and any
  Dissenting Shares (as hereinafter defined in Section 4.7)) shall be
  converted into $12.33 principal amount at maturity of Convertible
  Subordinated Notes of Parent ("Notes") having the principal terms (the
  "Principal Terms") set forth in the term sheet attached hereto as Annex I
  and such other customary terms as the parties hereto and their advisors
  shall agree upon. The Notes shall be issued pursuant to an indenture (the
  "Indenture") to be dated the Closing Date and to be entered into between
  Parent and a trustee to be selected by Parent and reasonably satisfactory
  to the Company. The Indenture shall contain the Principal Terms and shall
  be satisfactory to the Company and the Special Committee.
 
    (b) All Shares to be converted into Notes pursuant to this Section 4.1
  shall cease to be outstanding, be cancelled and retired and cease to exist,
  and each holder of a certificate representing any such Shares shall
  thereafter cease to have any rights with respect thereto, except the right
  to receive therefor, upon the surrender of such certificate in accordance
  with Section 4.2, the amount of Notes specified above (the "Merger
  Consideration") and cash in lieu of Fractional Notes (as hereinafter
  defined in Section 4.3).
 
    (c) At the Effective Time, each Share (other than the Parent Converted
  Shares, as hereinafter defined in Section 10.10) issued and outstanding and
  owned by Parent, Merger Sub or any direct or indirect wholly-owned
  subsidiary of Parent (collectively, the "Parent Companies") or any of the
  Company's direct or indirect wholly owned subsidiaries or treasury shares
  held by the Company immediately prior to the Effective Time shall cease to
  be outstanding, be cancelled and retired without payment of any
  consideration therefor and cease to exist.
 
    (d) At the Effective Time, each share of common stock of Merger Sub
  issued and outstanding immediately prior to the Effective Time shall be
  converted into one validly issued, fully paid and nonassessable share of
  common stock of the Surviving Corporation.
 
                                      A-2
<PAGE>
 
  4.2 Payment for Shares in the Merger. The manner of making payment for Shares
in the Merger shall be as follows:
 
    (a) As soon as reasonably practicable following the Effective Time,
  Parent shall make available to Harris Trust and Savings Bank (the "Exchange
  Agent"), or such other exchange agent selected by Parent and reasonably
  acceptable to the Company for the benefit of the holders of Shares, a
  sufficient number of certificates representing Notes required to effect the
  delivery of the aggregate Merger Consideration and sufficient cash for
  delivery in lieu of Fractional Notes pursuant to Section 4.3 (the
  certificates representing Notes comprising such aggregate Merger
  Consideration and cash in lieu of Fractional Notes being hereinafter
  referred to as the "Merger Exchange Fund"). The Exchange Agent shall,
  pursuant to irrevocable instructions, deliver the Notes and cash in lieu of
  Fractional Notes contemplated to be issued pursuant to Sections 4.1 and 4.3
  out of the Merger Exchange Fund. The Merger Exchange Fund shall not be used
  for any other purpose.
 
    (b) As soon as reasonably practicable after the Effective Time, the
  Exchange Agent shall mail to each holder of record (other than holders of
  certificates of Shares referred to in Section 4.1(c) or Dissenting Shares)
  of a certificate or certificates which immediately prior to the Effective
  Time represented outstanding Shares (the "Certificates") (i) a form of
  letter of transmittal (which shall specify that delivery shall be effected,
  and risk of loss and title to the Certificates shall pass, only upon proper
  delivery of the Certificates to the Exchange Agent) and (ii) instructions
  for use in effecting the surrender of the Certificates for payment
  therefor. Upon surrender of Certificates for cancellation to the Exchange
  Agent, together with such letter of transmittal duly executed and any other
  required documents, the holder of such Certificates shall be entitled to
  receive for each of the Shares represented by such Certificates the Merger
  Consideration and any cash in lieu of Fractional Notes and the Certificates
  so surrendered shall forthwith be cancelled. Until so surrendered, such
  Certificates shall represent solely the right to receive the Merger
  Consideration and any cash in lieu of Fractional Notes as contemplated by
  Section 4.3 with respect to each of the Shares represented thereby. No
  interest on the Notes will be paid to persons entitled by reason of the
  Merger to receive Notes until such persons surrender their Certificates. As
  soon as reasonably practicable following such surrender, there shall be
  paid any interest on the Notes payable between the Effective Time and the
  time of such surrender. If any certificate representing Notes is to be
  issued in a name other than that in which the Certificate surrendered in
  exchange therefor is registered, it shall be a condition of such exchange
  that the Certificate so surrendered shall be properly endorsed and
  otherwise in proper form for transfer and that the person requesting such
  exchange shall pay to the Exchange Agent any transfer or other taxes
  required by reason of the issuance of certificates for such Notes in a name
  other than that of the registered holder of the Certificate surrendered, or
  shall establish to the satisfaction of the Exchange Agent that such tax has
  been paid or is not applicable. Notwithstanding the foregoing, neither the
  Exchange Agent nor any party hereto shall be liable to a holder of Shares
  for any Notes or interest thereon, or, in accordance with Section 4.3, cash
  in lieu of Fractional Notes, delivered to a public official pursuant to
  applicable escheat law.
 
    (c) Any portion of the Merger Exchange Fund and any interest with respect
  to Notes made available to the Exchange Agent which remains unclaimed by
  the former stockholders of the Company for six months after the Effective
  Time shall be delivered to Parent, upon demand of Parent, and any former
  stockholders of the Company shall thereafter look only to Parent for
  payment of their claim for the Merger Consideration for the Shares or for
  cash in lieu of Fractional Notes.
 
  4.3 Fractional Notes. Notes shall be issued only in denominations of $1,000
and integral multiples of $1,000. Holders of Shares will not be entitled to
receive Notes in principal amounts of less than $1,000, or in principal amounts
in excess of $1,000 (or an integral multiple of $1,000) but less than the next
highest multiple of $1,000 ("Fractional Notes"). Each holder of Shares shall be
entitled to receive in lieu of any Fractional Notes to which such holder
otherwise would have been entitled pursuant to Section 4.2 (after taking into
account all Shares then held of record by such holder) cash in an amount equal
to the product of (i) the number of Shares of such holder which otherwise would
have been converted into such Fractional
 
                                      A-3
<PAGE>
 
Note and (ii) the average of the per share closing prices on the New York Stock
Exchange, Inc. (the "NYSE") of Shares (as reported in the NYSE Composite
Transactions) during the 10 consecutive trading days (the "Trading Period")
ending on the trading day prior to the Stockholder Meeting (as hereinafter
defined in Section 5.9) (the "Company Closing Price").
 
  4.4 Transfer of Shares After the Effective Time. No transfers of Shares shall
be made on the stock transfer books of the Company after the close of business
on the day prior to the date of the Effective Time.
 
  4.5 Stock Options.
 
    (a) After the Effective Time, each option (an "Option") which has been
  granted under the Company's 1986 Plan for Non-Employee Directors, 1986
  Stock Option Plan, 1990 Service Shares Stock Option Plan, 1992 Stock Option
  Plan and 1992 Stock Option Plan for Non-Employee Directors, in each case as
  such plan has been amended (collectively, the "Option Plans"), and is
  outstanding at the Effective Time, whether or not then exercisable, shall
  be assumed by Parent and shall be deemed to constitute an option to
  acquire, on the terms and conditions as were applicable under such Option,
  that number of Parent Common Shares equal to the product of (i) that number
  of Shares as the holder of such Option would have been entitled to receive
  had such holder exercised such Option in full immediately prior to the
  Effective Time (not taking into account whether such option was in fact
  exercisable at such time) and (ii) the quotient derived by dividing the
  Company Closing Price by the average of the per share closing prices on the
  NYSE of Parent Common Shares (as defined below) (as reported in the NYSE
  Composite Transactions) during the Trading Period, but rounded up to the
  next whole number of Parent Common Shares, at a price per share equal to
  (x) the aggregate exercise price for the Shares subject to such Option
  divided by (y) the number of full Parent Common Shares deemed purchasable
  pursuant to such Option. As soon as practicable after the Effective Time,
  Parent shall deliver to each holder of an Option an appropriate notice
  setting forth such holder's right to acquire Parent Common Shares and the
  Option agreements of each such holder shall be deemed to be appropriately
  amended so that such Options shall represent rights to acquire Parent
  Common Shares on the same terms and conditions as contained in the
  outstanding Options. "Parent Common Shares" shall mean shares of common
  stock, $1.00 par value per share, of Parent, including the associated
  rights (the "Parent Rights") to purchase shares of Series A Preferred Stock
  of Parent, pursuant to the Rights Agreement, dated as of February 6, 1987,
  as amended, between Parent and Harris Trust and Savings Bank, as Rights
  Agent (the "Parent Rights Agreement").
 
    (b) Parent shall take all corporate action necessary to reserve for
  issuance a sufficient number of Parent Common Shares for delivery upon
  exercise of the Options assumed in accordance with Section 4.5(a).
 
  4.6 Liquid Yield Option(TM) Notes due 2010. From and after the Effective
Time, the Liquid Yield Option(TM) Notes due 2010 (the "Company LYONs") issued
by the Company which, as of the date hereof, are exchangeable for Shares, shall
be assumed by Parent and shall be convertible into Notes. The parties agree to
take all actions required in connection with the transactions contemplated by
this Agreement by the Indenture, dated as of August 1, 1990, by and between the
Company and Harris Trust and Savings Bank, as Trustee, including the execution
of a supplemental indenture.
 
  4.7 Dissenting Shares.
 
    (a) Notwithstanding any other provision of this Agreement to the
  contrary, Shares that are outstanding immediately prior to the Effective
  Time and which are held by stockholders who shall have not voted in favor
  of the Merger or consented thereto in writing and who shall have demanded
  properly in writing appraisal for such shares in accordance with DGCL
  Section 262 and who shall not have withdrawn such demand or otherwise have
  forfeited appraisal rights (collectively, the "Dissenting Shares") shall
  not be converted into or represent the right to receive the Merger
  Consideration. Such stockholders shall be entitled to receive payment of
  the appraised value of such Shares held by them in
 
                                      A-4
<PAGE>
 
  accordance with the provisions of such Section 262, except that all
  Dissenting Shares held by stockholders who shall have failed to perfect or
  who effectively shall have withdrawn or lost their rights to appraisal of
  such Shares under such Section 262 shall thereupon be deemed to have been
  converted into and to have become exchangeable, as of the Effective Time,
  for the right to receive, without any interest thereon, the Merger
  Consideration, upon surrender, in the manner provided in Section 4.2 of the
  Certificates that formerly evidenced such Shares.
 
    (b) The Company shall give Parent (i) prompt notice of any demands for
  appraisal received by the Company, withdrawals of such demands, and any
  other instruments served pursuant to the DGCL and received by the Company
  and (ii) the opportunity to direct all negotiations and proceedings with
  respect to demands for appraisal under the DGCL. The Company shall not,
  except with the prior written consent of Parent, make any payment with
  respect to any demands for appraisal, or offer to settle, or settle, any
  such demands.
 
                                   ARTICLE V
 
                 Representations and Warranties of the Company
 
  The Company hereby represents and warrants to Parent and Merger Sub that:
 
  5.1 Corporate Organization and Qualification. Each of the Company and its
Significant Subsidiaries (as hereinafter defined in Section 10.10) (i) is a
corporation duly organized, validly existing and in good standing under the
laws of the jurisdiction of its incorporation, (ii) is qualified and in good
standing as a foreign corporation in each jurisdiction where the properties
owned, leased or operated, or the business conducted, by it require such
qualification and (iii) has all requisite power and authority to own its
properties and to carry on its business as it is now being conducted, except
where failure to so qualify, be in good standing or have such power and
authority would not, individually or in the aggregate, have a Material Adverse
Effect (as hereinafter defined in Section 10.10).
 
  5.2 Capitalization. The authorized capital stock of the Company consists of
(i) 500,000,000 shares of Company Common Stock, of which, as of August 31,
1994, 209,143,793 Shares were issued and outstanding, and (ii) 50,000,000
shares of preferred stock, par value $.01 per share, of which, as of August 31,
1994, no shares were issued and outstanding. All of the outstanding Shares have
been duly authorized and validly issued and are fully paid and nonassessable.
As of August 31, 1994, 8,631,386 Shares were reserved for issuance upon
exercise of outstanding Options pursuant to the Option Plans, and 3,910,561
Shares were reserved for issuance upon conversion of outstanding Company LYONs.
Except as set forth above and, except for Parent's option to acquire Shares
pursuant to Section 6.08 of the Intercorporate Agreement, dated as of September
3, 1986, by and between Parent and the Company, there are not as of the date
hereof any outstanding or authorized options, warrants, calls, rights
(including preemptive rights), commitments or any other agreements of any
character which the Company is a party to, or may be bound by, requiring it to
issue, transfer, sell, purchase, redeem or acquire any shares of capital stock
or any securities or rights convertible into, exchangeable for, or evidencing
the right to subscribe for, any shares of capital stock of the Company.
 
  5.3 Authority Relative to This Agreement. The Company has the requisite
corporate power and authority to execute and deliver this Agreement and to
consummate the transactions contemplated hereby. This Agreement and the
consummation by the Company of the transactions contemplated hereby have been
duly and validly authorized by the Board of Directors of the Company and no
other corporate proceedings on the part of the Company are necessary to
authorize this Agreement or to consummate the transactions contemplated hereby
(other than the approval of this Agreement and the Merger by the stockholders
of the Company in accordance with Section 251 of the DGCL, the Company's
Certificate of Incorporation and Section 8.1(a) hereof). This Agreement has
been duly and validly executed and delivered by the Company and, assuming this
Agreement constitutes the valid and binding agreement of Parent and Merger Sub,
 
                                      A-5
<PAGE>
 
constitutes the valid and binding agreement of the Company, enforceable against
the Company in accordance with its terms, except that the enforcement hereof
may be limited by (i) bankruptcy, insolvency, reorganization, moratorium or
other similar laws now or hereafter in effect relating to creditors' rights
generally and (ii) general principles of equity (regardless of whether
enforceability is considered in a proceeding in equity or at law).
 
  5.4 Consents and Approvals; No Violation. Neither the execution and delivery
of this Agreement by the Company nor the consummation by the Company of the
transactions contemplated hereby will (a) conflict with or result in any breach
of any provision of the Certificate of Incorporation or By-Laws of the Company;
(b) require of the Company or its subsidiaries any consent, approval,
authorization or permit of, or filing with or notification to, any governmental
or regulatory authority, except (i) pursuant to the applicable requirements of
the Securities Act and the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), and the rules and regulations promulgated thereunder, (ii) the
filing of the Certificate of Merger pursuant to the DGCL, (iii) as may be
required by any applicable state securities or "blue sky" laws or state
takeover laws or (iv) where the failure to obtain such consent, approval,
authorization or permit, or to make such filing or notification, would not,
individually or in the aggregate, have a Material Adverse Effect; (c) result in
a violation or breach of, or constitute a default under any of the terms,
conditions or provisions of any note, license, agreement or other instrument or
obligation to which the Company or any of its Significant Subsidiaries may be
bound, except for such violations, breaches and defaults as to which requisite
waivers or consents have been obtained or which would not, individually or in
the aggregate, have a Material Adverse Effect; or (d) violate any order, writ,
injunction, decree, statute, rule or regulation applicable to the Company or
any of its subsidiaries, except for violations which would not, individually or
in the aggregate, have a Material Adverse Effect.
 
  5.5 SEC Reports; Financial Statements.
 
    (a) The Company has filed all periodic reports required to be filed by it
  since January 1, 1994 with the Securities and Exchange Commission (the
  "SEC") pursuant to the federal securities laws and the SEC rules and
  regulations thereunder, all of which as of their respective dates complied
  in all material respects with all applicable requirements of the Exchange
  Act (collectively, the "Company SEC Reports"). None of the Company SEC
  Reports, including, without limitation, any financial statements or
  schedules included therein, as of their respective dates, contained any
  untrue statement of a material fact or omitted to state a material fact
  required to be stated therein or necessary in order to make the statements
  therein, in light of the circumstances under which they were made, not
  misleading.
 
    (b) The consolidated financial statements (including the related notes
  thereto) of the Company included in the Company SEC Reports complied in all
  material respects with applicable accounting requirements and the published
  rules and regulations of the SEC with respect thereto, have been prepared
  in accordance with generally accepted accounting principles applied on a
  basis consistent with prior periods (except as otherwise noted therein),
  and present fairly the consolidated financial position of the Company and
  its consolidated subsidiaries as of their respective dates, and the
  consolidated results of their operations and cash flows for the periods
  presented therein (subject, in the case of the unaudited interim financial
  statements, to normal year-end adjustments).
 
  5.6 Absence of Certain Changes or Events. Except as disclosed in the Company
SEC Reports filed prior to the date of this Agreement, as contemplated by this
Agreement or as otherwise known to Parent or Merger Sub at or prior to the date
of this Agreement, since June 30, 1994, the business of the Company has been
carried on only in the ordinary and usual course, and the Company has not
suffered any Material Adverse Effect.
 
  5.7 Undisclosed Liabilities. Except as disclosed in the Company SEC Reports
filed prior to the date of this Agreement, as contemplated by this Agreement or
as otherwise known to Parent or Merger Sub at or prior to the date of this
Agreement, there are no liabilities or obligations of the Company or its
subsidiaries of any kind whatsoever, whether accrued, contingent, absolute or
otherwise, that would be required by
 
                                      A-6
<PAGE>
 
generally accepted accounting principles to be reflected on a consolidated
balance sheet of the Company, other than liabilities or obligations (i)
incurred in the ordinary course of business consistent with past practice since
June 30, 1994 or (ii) which would not, individually or in the aggregate, have a
Material Adverse Effect.
 
  5.8 Litigation. Except as disclosed in the Company SEC Reports filed prior to
the date of this Agreement or for any litigation relating to the transactions
contemplated by this Agreement, (i) there are no actions, claims, suits,
proceedings or governmental investigations pending or, to the knowledge of the
Company, threatened, involving or affecting Company or any of its subsidiaries
which, individually or in the aggregate, are reasonably likely to have a
Material Adverse Effect and (ii) there are no judgments, decrees, injunctions,
rules or orders of any court or governmental or regulatory authority applicable
to the Company or any of its subsidiaries, which, individually or in the
aggregate, would have a Material Adverse Effect.
 
  5.9 S-4 Registration Statement; Schedule 13E-3; Proxy Statement/Prospectus.
None of the information to be supplied by and relating to the Company for
inclusion or incorporation by reference in the S-4 Registration Statement, the
Schedule 13E-3 or the Proxy Statement (as such terms are hereinafter defined in
Section 7.2) will (i) in the case of the S-4 Registration Statement, at the
time it becomes effective and at the Effective Time, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein not
misleading, or (ii) in the case of the Schedule 13E-3 and the Proxy Statement,
at the time of the mailing of the Proxy Statement and at the time of the
stockholder meeting of the Company in connection with the vote of such
stockholders with respect to the Merger and this Agreement (the "Stockholder
Meeting"), contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made,
not misleading. If at any time prior to the Effective Time any event with
respect to the Company should occur which is required to be described in an
amendment of, or a supplement to, the Proxy Statement, the Schedule 13E-3 or
the S-4 Registration Statement, such event shall be so described, and such
amendment or supplement shall be promptly filed with the SEC and, as required
by law, disseminated to the stockholders of the Company. With respect to the
information relating to the Company, the Schedule 13E-3 and the Proxy Statement
will comply as to form in all material respects with the requirements of the
Exchange Act. For purposes of this Section 5.9, any statement which is made or
incorporated by reference in the Proxy Statement, the Schedule 13E-3 or the S-4
Registration Statement shall be deemed modified or superseded to the extent any
later filed document incorporated by reference in the Proxy Statement, the
Schedule 13E-3 or the S-4 Registration Statement or any statement included in
the Proxy Statement, the Schedule 13E-3 or the S-4 Registration Statement
modifies or supersedes such earlier statement.
 
  5.10 Environmental Laws and Regulations. Except as set forth in the Company
SEC Reports filed prior to the date of this Agreement, (i) the Company and each
of its Significant Subsidiaries are in compliance with all applicable federal,
state and local laws and regulations relating to pollution or protection of
human health or the environment (including, without limitation, ambient air,
surface water, ground water, land surface or subsurface strata) (collectively,
"Environmental Laws"), except for non-compliance that would not, individually
or in the aggregate, have a Material Adverse Effect, and (ii) neither the
Company nor any of its Significant Subsidiaries has received written notice of,
or, to the knowledge of the Company, is the subject of, any action, cause of
action, claim, investigation, demand or notice by any person or entity alleging
liability under or non-compliance with any Environmental Law (an "Environmental
Claim") which, individually or in the aggregate, is reasonably likely to have a
Material Adverse Effect.
 
  5.11 Compliance with Applicable Laws. The Company and its subsidiaries hold
all permits, licenses, variances, exemptions, orders, franchises and approvals
of all governmental or regulatory authorities necessary for the lawful conduct
of its business, except where the failure to so hold would not, individually or
in the aggregate, have a Material Adverse Effect (the "Company Permits"). The
Company and its subsidiaries are in compliance with the terms of the Company
Permits, except where the failure so to comply would not, individually or in
the aggregate, have a Material Adverse Effect. Except as disclosed in the
 
                                      A-7
<PAGE>
 
Company SEC Reports filed prior to the date of this Agreement, the business of
the Company is not being conducted in violation of any law, ordinance or
regulation of any governmental or regulatory authorities, except for possible
violations which, individually or in the aggregate, would not have a Material
Adverse Effect.
 
  5.12 Opinion of Financial Advisor. The Special Committee has received the
opinion (the "Fairness Opinion") of CS First Boston Corporation ("CS First
Boston"), the Special Committee's financial advisor, dated the date of this
Agreement, to the effect that, as of such date, the consideration to be
received in the Merger is fair to the holders of Company Common Stock (other
than the Parent Companies) from a financial point of view.
 
                                   ARTICLE VI
 
            Representations and Warranties of Parent and Merger Sub
 
  Parent and Merger Sub represent and warrant, jointly and severally, to the
Company that:
 
  6.1 Corporate Organization and Qualification. Each of Parent and its
Significant Subsidiaries and Merger Sub (i) is a corporation duly organized,
validly existing and in good standing under the laws of its respective
jurisdiction of incorporation, (ii) is qualified and in good standing as a
foreign corporation in each jurisdiction where the properties owned, leased or
operated, or the business conducted, by it require such qualification and (iii)
has all requisite power and authority to own its properties and to carry on its
business as it is now being conducted, except where the failure to so qualify,
be in such good standing or have such power and authority would not,
individually or in the aggregate, have a Material Adverse Effect.
 
  6.2 Capitalization. The authorized capital stock of Parent consists of (i)
1,500,000,000 Parent Common Shares of which, as of August 31, 1994, 483,812,769
were issued and outstanding and (ii) 50,000,000 shares of preferred stock, $1
par value per share (the "Parent Preferred Shares"), of which, as of August 31,
1994, none were issued and outstanding. All of the outstanding shares of
capital stock of Parent have been duly authorized and validly issued and are
fully paid and nonassessable. As of August 31, 1994, 14,595,105 Parent Common
Shares were reserved for issuance upon exercise of outstanding options under
Parent's 1982 Stock Option Plan, 1981 Stock Option Plan for Non-Employee
Directors, 1992 Stock Option Plan, 1992 Stock Option Plan for Non-Employee
Directors, Replacement Stock Option Plan and 1990 Service Shares Stock Option
Plan and the Modulaire Industries 1983 Amended Incentive Stock Option Plan, in
each case as such plan has been amended (collectively, the "Parent Option
Plans"), and 697,147 Parent Common Shares were reserved for issuance upon
conversion of Liquid Yield Option(TM) Notes due 2001. Except as set forth above
and for (i) put options, which obligate Parent to purchase not more than
9,000,000 Parent Common Shares, (ii) up to 10,085,883 Parent Common Shares
issuable in connection with acquisitions by Parent, (iii) the right of Parent
to acquire additional shares of Wheelabrator Technologies, Inc. ("WTI"), Waste
Management International plc ("WME") and the Company and of the Company and WTI
to acquire shares of Rust International Inc. ("Rust") and of Rust and WTI to
acquire shares of WME, (iv) the Parent Rights and (v) stock option plans of
subsidiaries of Parent, there are not, as of the date hereof, any outstanding
or authorized options, warrants, calls, rights (including preemptive rights),
commitments or any other agreements of any character which Parent or any of its
Significant Subsidiaries is a party to, or may be bound by, requiring it to
issue, transfer, sell, purchase, redeem or acquire any Parent Common Shares or
any shares of capital stock or any securities or rights convertible into,
exchangeable for, or evidencing the right to subscribe for, any shares of
capital stock of Parent or any of its Significant Subsidiaries. The authorized
capital stock of Merger Sub consists of 1,000 shares of common stock, par value
$1.00 per share, all of which at the Effective Time will be validly issued,
fully paid and nonassessable and owned by Parent and any wholly-owned
subsidiary of Parent free and clear of all liens, charges, claims or
encumbrances.
 
  6.3 Authority Relative to This Agreement. Each of Parent and Merger Sub has
the requisite corporate power and authority to execute and deliver this
Agreement and to consummate the transactions contemplated
 
                                      A-8
<PAGE>
 
hereby. This Agreement and the consummation by Parent and Merger Sub of the
transactions contemplated hereby have been duly and validly authorized by the
respective Boards of Directors of Parent and Merger Sub and by Parent as sole
stockholder of Merger Sub, and no other corporate proceedings on the part of
Parent and Merger Sub are necessary to authorize this Agreement or to
consummate the transactions contemplated hereby. This Agreement has been duly
and validly executed and delivered by each of Parent and Merger Sub and,
assuming this Agreement constitutes the valid and binding agreement of the
Company, constitutes valid and binding agreements of each of Parent and Merger
Sub, enforceable against each of them in accordance with its terms, except that
the enforcement hereof may be limited by (a) bankruptcy, insolvency,
reorganization, moratorium or other similar laws now or hereafter in effect
relating to creditors' rights generally and (b) general principles of equity
(regardless of whether enforceability is considered in a proceeding at law or
in equity).
 
  6.4 Consents and Approvals; No Violation. Neither the execution and delivery
of this Agreement by Parent or Merger Sub nor the consummation by Parent and
Merger Sub of the transactions contemplated hereby will (a) conflict with or
result in any breach of any provision of the Certificate of Incorporation or
the By-Laws, respectively, of Parent or Merger Sub; (b) require of Parent or
its subsidiaries (except the Company) any consent, approval, authorization or
permit of, or filing with or notification to, any governmental or regulatory
authority, except (i) pursuant to the applicable requirements of the Securities
Act, the Exchange Act and the Trust Indenture Act (as hereinafter defined in
Section 7.2) and the rules and regulations promulgated thereunder, (ii) the
filing of the Certificate of Merger pursuant to the DGCL, (iii) as may be
required by any applicable state securities or "blue sky" laws or state
takeover laws, (iv) filings with, and approval of, the NYSE or (v) where the
failure to obtain such consent, approval, authorization or permit, or to make
such filing or notification, would not, individually or in the aggregate, have
a Material Adverse Effect; (c) result in a violation or breach of, or
constitute a default under any of the terms, conditions or provisions of any
note, license, agreement or other instrument or obligation to which Parent or
any of its Significant Subsidiaries (other than the Company) may be bound,
except for such violations, breaches and defaults as to which requisite waivers
or consents have been obtained or which would not, individually or in the
aggregate, have a Material Adverse Effect; or (d) violate any order, writ,
injunction, decree, statute, rule or regulation applicable to Parent or any of
its subsidiaries (other than the Company), except for violations which would
not, individually or in the aggregate, have a Material Adverse Effect.
 
  6.5 SEC Reports; Financial Statements.
 
    (a) Parent has filed all periodic reports required to be filed by it
  since January 1, 1994 with the SEC pursuant to the federal securities laws
  and the SEC rules and regulations thereunder, all of which as of their
  respective dates complied in all material respects with all applicable
  requirements of the Exchange Act (collectively, the "Parent SEC Reports").
  Except with respect to information about the Company furnished by the
  Company to Parent for inclusion in the Parent SEC Reports, none of the
  Parent SEC Reports, including, without limitation, any financial statements
  or schedules included therein, as of their respective dates, contained any
  untrue statement of a material fact or omitted to state a material fact
  required to be stated therein or necessary in order to make the statements
  therein, in light of the circumstances under which they were made, not
  misleading.
 
    (b) The consolidated financial statements (including the related notes
  thereto) of Parent included in the Parent SEC Reports complied in all
  material respects with applicable accounting requirements and the published
  rules and regulations of the SEC with respect thereto, have been prepared
  in accordance with generally accepted accounting principles applied on a
  basis consistent with prior periods (except as otherwise noted therein),
  and (assuming that all information about the Company furnished by the
  Company to Parent for inclusion in Parent's consolidated financial
  statements is true and complete in all material respects) present fairly
  the consolidated financial position of Parent and its consolidated
  subsidiaries as of their respective dates, and the consolidated results of
  their operations and cash flows for the periods presented therein (subject,
  in the case of the unaudited interim financial statements, to normal year-
  end adjustments).
 
                                      A-9
<PAGE>
 
  6.6 Absence of Certain Changes or Events. Except as disclosed in the Parent
SEC Reports filed prior to the date of this Agreement or as contemplated by
this Agreement, since June 30, 1994, the business of Parent has been carried on
only in the ordinary and usual course, and Parent has not suffered any Material
Adverse Effect.
 
  6.7 Undisclosed Liabilities. Except as disclosed in the Parent SEC Reports
filed prior to the date of this Agreement or as contemplated by this Agreement,
there are no liabilities or obligations of Parent or its subsidiaries (except
for the Company and its subsidiaries) of any kind whatsoever, whether accrued,
contingent, absolute or otherwise, that would be required by generally accepted
accounting principles to be reflected on a consolidated balance sheet of
Parent, other than liabilities or obligations (i) incurred in the ordinary
course of business consistent with past practice since June 30, 1994 or (ii)
which would not, individually or in the aggregate, have a Material Adverse
Effect.
 
  6.8 Litigation. Except as disclosed in the Parent SEC Reports filed prior to
the date of this Agreement or for any litigation relating to the transactions
contemplated by this Agreement, (i) there are no actions, claims, suits,
proceedings or governmental investigations pending or, to the knowledge of
Parent, threatened, involving or affecting Parent or any of its subsidiaries
(except for the Company and its subsidiaries) which, individually or in the
aggregate, are reasonably likely to have a Material Adverse Effect and (ii)
there are no judgments, decrees, injunctions, rules or orders of any court or
governmental or regulatory authority applicable to Parent or any of its
subsidiaries (except for the Company and its subsidiaries) which would,
individually or in the aggregate, have a Material Adverse Effect.
 
  6.9 S-4 Registration Statement; Schedule 13E-3; Proxy Statement/Prospectus.
None of the information to be supplied by Parent or Merger Sub for inclusion or
incorporation by reference in the S-4 Registration Statement, the Schedule 13E-
3 or the Proxy Statement (except for information about the Company furnished by
the Company to Parent) will (i) in the case of the S-4 Registration Statement,
at the time it becomes effective and at the Effective Time, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein not
misleading or (ii) in the case of the Schedule 13E-3 and the Proxy Statement,
at the time of the mailing of the Proxy Statement and at the time of the
Stockholder Meeting, contain any untrue statement of a material fact or omit to
state any material fact required to be stated therein or necessary in order to
make the statements therein, in light of the circumstances under which they are
made, not misleading. If at any time prior to the Effective Time any event with
respect to Parent, its officers and directors or any of its subsidiaries shall
occur which is required to be described in an amendment of, or a supplement to,
the Proxy Statement, the Schedule 13E-3 or the S-4 Registration Statement, such
event shall be so described, and such amendment or supplement shall be promptly
filed with the SEC and, as required by law, disseminated to the stockholders of
the Company. The Schedule 13E-3 and the Proxy Statement (except with respect to
information relating to the Company) will comply as to form in all material
respects with the provisions of the Exchange Act, and the S-4 Registration
Statement (except with respect to information relating to the Company) will
comply as to form in all material respects with the provisions of the
Securities Act. For purposes of this Section 6.9, any statement which is made
or incorporated by reference in the Proxy Statement, the Schedule 13E-3 or the
S-4 Registration Statement shall be deemed modified or superseded to the extent
any later filed document incorporated by reference in the Proxy Statement, the
Schedule 13E-3 or the S-4 Registration Statement or any statement included in
the Proxy Statement, the Schedule 13E-3 or the S-4 Registration Statement
modifies or supersedes such earlier statement.
 
  6.10 Authorization for Notes and Parent Common Shares. Prior to the Effective
Time, Parent will have taken all necessary action to permit it to issue the
Notes and the Parent Common Shares issuable upon conversion of the Notes.
Parent Common Shares issued upon conversion of the Notes will, when issued, be
validly issued, fully paid and nonassessable and no person will have any
preemptive right of subscription or purchase in respect thereof. Such Parent
Common Shares will, when issued, be registered or exempt from registration
under the Securities Act and the Exchange Act and registered or exempt from
registration under any applicable state securities laws and will, when issued,
be listed on the NYSE, subject to notice of official
 
                                      A-10
<PAGE>
 
issuance. At Closing, the Indenture will have been duly authorized and will be
the valid and binding obligation of Parent. The Notes, upon issuance pursuant
to the Indenture, will have been duly authorized and will be valid and binding
obligations of Parent entitled to the benefits of the Indenture.
 
  6.11 Interim Operations of Merger Sub. Merger Sub was formed solely for the
purpose of engaging in the transactions contemplated hereby and has not engaged
in any business activities or conducted any operations other than in connection
with the transactions contemplated hereby.
 
  6.12 Environmental Laws and Regulations. As of the date of this Agreement,
except as set forth in the Parent SEC Reports filed prior to the date of this
Agreement, (i) Parent and each of its Significant Subsidiaries (other than the
Company) are in compliance with all Environmental Laws, except for non-
compliance that would not, individually or in the aggregate, have a Material
Adverse Effect and (ii) neither Parent nor any of its Significant Subsidiaries
(other than the Company) has received written notice of, or, to the knowledge
of Parent, is the subject of, any Environmental Claim which, individually or in
the aggregate, is reasonably likely to have a Material Adverse Effect.
 
  6.13 Compliance with Applicable Laws. Parent and its subsidiaries (other than
the Company) hold all permits, licenses, variances, exemptions, orders,
franchises and approvals of all governmental or regulatory authorities
necessary for the lawful conduct of their respective businesses, except where
the failure to so hold would not, individually or in the aggregate, have a
Material Adverse Effect (the "Parent Permits"). Parent and its subsidiaries
(other than the Company) are in compliance with the terms of the Parent
Permits, except where the failure so to comply would not, individually or in
the aggregate, have a Material Adverse Effect. Except as disclosed in the
Parent SEC Reports filed prior to the date of this Agreement, the businesses of
Parent and its subsidiaries (other than the Company) are not being conducted in
violation of any law, ordinance or regulation of any governmental or regulatory
authorities, except for possible violations which, individually or in the
aggregate, would not have a Material Adverse Effect.
 
  6.14 Ownership of Shares. As of the date hereof, the Parent Companies own
164,278,417 Shares.
 
                                  ARTICLE VII
 
                      Additional Covenants and Agreements
 
  7.1 Stockholders' Approval.
 
    (a) The Company shall submit this Agreement and the transactions
  contemplated hereby for the approval of its stockholders at the Stockholder
  Meeting as promptly as practicable and shall use all reasonable efforts to
  obtain stockholder approval and adoption of this Agreement and the
  transactions contemplated hereby, such Stockholder Meeting to be held as
  soon as practicable following the date upon which the S-4 Registration
  Statement becomes effective, and the Company shall, through its Board of
  Directors, recommend to its stockholders approval of the transactions
  contemplated by this Agreement, subject to the provisions of Section 7.1(b)
  hereof.
 
    (b) Notwithstanding the foregoing, the Special Committee or the Board of
  Directors of the Company may at any time prior to the Effective Time
  withdraw, modify or change any recommendation and declaration regarding
  this Agreement or the Merger, or recommend and declare advisable any other
  offer or proposal, if in the opinion of the Special Committee or the Board
  of Directors after consultation with its counsel the failure to so
  withdraw, modify or change its recommendation and declaration would be
  inconsistent with its fiduciary duties to its stockholders under applicable
  law.
 
    (c) From the date hereof to the Effective Time, Parent shall not sell or
  otherwise dispose of the Shares that it owns, except upon exchange of
  Parent LYONs (as hereinafter defined in Section 10.10(d)). At the
  Stockholder Meeting, or any adjournment thereof, Parent shall vote the
  Shares it owns in favor of the Merger.
 
                                      A-11
<PAGE>
 
  7.2 Registration Statement. Parent and the Company will, as promptly as
practicable, prepare and file with the SEC a proxy statement/prospectus, a Rule
13e-3 Transaction Statement on Schedule 13E-3 (the "Schedule 13E-3") and forms
of proxy in connection with the vote of the Company's stockholders with respect
to the Merger and this Agreement (such proxy statement/prospectus, together
with any amendments thereof or supplements thereto, in each case in the form or
forms mailed to the Company's stockholders, is herein called the "Proxy
Statement"). Parent will, as promptly as practicable, prepare and file with the
SEC a registration statement on Form S-4 (as amended or supplemented, the "S-4
Registration Statement"), containing the Proxy Statement, and the Schedule 13E-
3 in connection with the registration under the Securities Act of Notes and
Parent Common Shares issuable upon conversion of the Notes (except to the
extent an exemption from registration is available). Parent and the Company
will each use all reasonable efforts to have or cause the S-4 Registration
Statement declared effective as promptly as practicable, including, without
limitation, causing their accountants to deliver necessary or required
instruments such as opinions and certificates, and will take any other action
required or necessary to be taken under federal or state securities laws (other
than qualifying to do business in any jurisdiction, subjecting itself to
taxation in any jurisdiction or giving any general consent to service of
process in any jurisdiction) or otherwise in connection with the registration
process. The Company and Parent will each use all reasonable efforts to cause
the Schedule 13E-3 and the Proxy Statement to be mailed to stockholders of the
Company at the earliest practicable date. Parent shall prepare and file the
Indenture with the SEC for qualification under the Trust Indenture Act of 1939,
as amended (the "Trust Indenture Act"), and shall use all reasonable efforts to
cause the trustee under the Indenture to file a T-1 under the Trustee Indenture
Act.
 
  7.3 All Reasonable Efforts.
 
    (a) Subject to the terms and conditions herein provided, each of the
  parties hereto shall use all reasonable efforts to take, or cause to be
  taken, all action and to do, or cause to be done, all things necessary,
  proper or advisable under applicable laws and regulations to consummate and
  make effective the transactions contemplated by this Agreement, including
  using all reasonable efforts to obtain all necessary or appropriate
  waivers, consents and approvals, to effect all necessary registrations,
  filings and submissions and to lift any injunction or other legal bar to
  the Merger (and, in such case, to proceed with the Merger as expeditiously
  as possible), subject, however, to the requisite vote of the stockholders
  of the Company.
 
    (b) Notwithstanding the foregoing, the Company shall not be obligated to
  use all reasonable efforts or take any action pursuant to this Section 7.3
  if in the opinion of the Special Committee or the Board of Directors after
  consultation with its counsel such actions would be inconsistent with its
  fiduciary duties to the Company's stockholders under applicable law.
 
  7.4 Access to Information. Upon reasonable notice, each of the Company and
Parent shall (and shall cause each of its subsidiaries to) afford to officers,
employees, counsel, accountants and other authorized representatives of the
other party hereto ("Respective Representatives"), in order to evaluate the
transactions contemplated by this Agreement, reasonable access during normal
business hours throughout the period prior to the Effective Time, to its
properties, books and records and, during such period, shall (and shall cause
each of its subsidiaries to) furnish promptly to such Respective
Representatives all information concerning its business, properties and
personnel as may reasonably be requested. Each of the Company and Parent agrees
that it will, and will cause its Respective Representatives to, keep all such
information confidential (except as required by law and except for information
(i) which is or becomes generally available to the public, (ii) which was
available to such party on a nonconfidential basis prior to disclosure to such
party or (iii) which becomes available to such a party on a non-confidential
basis from a source other than the other party) and will not, and will cause
its Respective Representatives not to, use any information obtained pursuant to
this Section 7.4 for any purpose unrelated to the consummation of the
transactions contemplated by this Agreement.
 
  7.5 Publicity. The parties will consult with each other and will mutually
agree upon any press releases or public announcements pertaining to the Merger
and shall not issue any such press releases or make any such
 
                                      A-12
<PAGE>
 
public announcements prior to such consultation and agreement, except as may be
required by applicable law or by obligations pursuant to any listing agreement
with any national securities exchange, in which case the party proposing to
issue such press release or make such public announcement shall use all
reasonable efforts to consult in good faith with the other party before issuing
any such press releases or making any such public announcements.
 
  7.6 Indemnification of Directors and Officers.
 
    (a) From and after the Effective Time, the Surviving Corporation shall
  maintain, and Parent agrees to cause the Surviving Corporation to maintain,
  for not less than three years director and officer liability insurance, to
  the extent such coverage is commercially available, providing at least the
  same amounts and coverage with respect to the Company's officers and
  directors as the current policies maintained by or on behalf of the
  Company, and containing terms and conditions which are no less advantageous
  with respect to matters existing or occurring on or prior to the Effective
  Time, and in the event any claim is made against present directors or
  officers of the Company that is covered, in whole or in part, or
  potentially so covered by insurance, the Surviving Corporation and Parent
  shall do nothing that would forfeit, jeopardize, restrict or limit the
  insurance coverage available for that claim until the final disposition of
  that claim. All rights to indemnification now existing in favor of the
  present directors or officers of the Company and its respective
  subsidiaries as provided in their respective certificates or articles of
  incorporation or by-laws or otherwise in effect on the date hereof shall
  survive the Merger for a period of six years, and, during such period, the
  Certificate of Incorporation and By-Laws of the Surviving Corporation shall
  not be amended to reduce or limit the rights of indemnity of the present
  directors or officers of the Company, or the ability of the Surviving
  Corporation to indemnify them, nor to hinder, delay or make more difficult
  the exercise of such rights of indemnity or the ability to indemnify. In
  addition, the Company (and, after the Effective Time, the Surviving
  Corporation) shall pay expenses in advance of the final disposition of any
  action or proceeding to the full extent permitted by law to each director
  or officer of the Company and its respective subsidiaries seeking
  indemnification pursuant to the existing rights of indemnification required
  to be maintained in the preceding sentence.
 
    (b) Without limiting the foregoing, in any case in which approval by the
  Surviving Corporation is required to effectuate any indemnification under
  this Section 7.6, Parent shall cause the Surviving Corporation to direct,
  at the election of the director or officer of the Company seeking
  indemnification hereunder, that the determination of any such approval
  shall be made by independent counsel reasonably acceptable to the Surviving
  Corporation selected by such director or officer of the Company seeking
  indemnification hereunder.
 
    (c) This Section 7.6 shall survive the consummation of the Merger. The
  provisions of this Section 7.6 are intended to be for the benefit of, and
  shall be enforceable by, the present directors or officers of the Company,
  as the case may be. If the Surviving Corporation or any of its successors
  or assigns (i) consolidates with or merges into any other corporation or
  entity and is not the continuing or surviving corporation or entity of such
  consolidation or merger or (ii) transfers all or substantially all of its
  properties or assets to any individual, corporation or any other entity, in
  each such case, proper provision shall be made so that the successors and
  assigns of the Surviving Corporation shall assume the obligations set forth
  in this Section 7.6.
 
  7.7 Blue Sky Permits. Parent shall use all reasonable efforts to obtain,
prior to the effective date of the S-4 Registration Statement, all necessary
state securities laws or "blue sky" permits and approvals required to carry out
the transactions contemplated by this Agreement and the Merger (other than
qualifying to do business in any jurisdiction, subjecting itself to taxation in
any jurisdiction or giving any general consent to service of process in any
jurisdiction), and will pay all expenses incident thereto.
 
  7.8 NYSE Listing. Parent shall use all reasonable efforts to cause the Notes
and the Parent Common Shares issuable upon conversion of the Notes to be listed
on the NYSE, subject to notice of official issuance thereof.
 
                                      A-13
<PAGE>
 
  7.9 Conduct of Business of Merger Sub. During the period of time from the
date of this Agreement to the Effective Time, Merger Sub shall not engage in
any activities of any nature except as provided in or contemplated by this
Agreement.
 
  7.10 Parent Common Shares. Parent shall not split, combine, subdivide or
reclassify any shares of its capital stock prior to the Effective Time or
declare a stock dividend or other stock distribution in Parent Common Shares
with a record date prior to the Effective Time.
 
                                  ARTICLE VIII
 
                                   Conditions
 
  8.1 Condition to Each Party's Obligations. The respective obligations of each
party to effect the Merger are subject to the satisfaction at or prior to the
Effective Time of the following conditions:
 
    (a) Stockholder Approval. This Agreement and the Merger shall have been
  duly approved and adopted at the Stockholder Meeting by (i) the holders of
  a majority of the Shares outstanding as of the record date and (ii) the
  holders of a majority of the Shares outstanding which are present in person
  or represented by proxy at the Stockholder Meeting and entitled to vote
  thereat, excluding Shares owned by the Parent Companies.
 
    (b) Injunction. There shall not be in effect any statute, rule,
  regulation, executive order, decree, ruling or injunction or other order of
  a court or governmental or regulatory agency of competent jurisdiction
  directing that the transactions contemplated herein not be consummated;
  provided, however, that prior to invoking this condition each party shall
  use all reasonable efforts to have any such decree, ruling, injunction or
  order vacated.
 
    (c) S-4 Registration Statement; "Blue Sky" Permits. The S-4 Registration
  Statement shall have become effective and the Indenture shall have been
  qualified under the Trust Indenture Act and no stop order suspending the
  effectiveness of the S-4 Registration Statement shall have been issued and
  no proceedings for such purpose shall have been initiated and be continuing
  by the SEC. Parent shall have received all state securities laws or "blue
  sky" permits and authorizations necessary to consummate the transactions
  contemplated hereby.
 
    (d) Listing of Parent Common Shares and Notes. The Notes and the Parent
  Common Shares issuable upon conversion of the Notes and the other such
  shares required to be reserved for issuance in connection with the Merger
  shall have been authorized for listing on the NYSE, subject to notice of
  official issuance.
 
    (e) Governmental Filings and Consents. All governmental consents, orders
  and approvals legally required for the consummation of the Merger and the
  transactions contemplated hereby shall have been obtained and be in effect
  at the Effective Time, except where the failure to obtain any such consent
  would not, individually or in the aggregate, reasonably be expected to have
  a Material Adverse Effect on Parent (assuming the Merger had taken place).
 
    (f) Fairness Opinion. CS First Boston shall not have withdrawn or
  modified in any material respect its Fairness Opinion on or prior to the
  Closing Date.
 
  8.2 Additional Conditions to the Obligations of Parent and Merger Sub. The
respective obligations of Parent and Merger Sub to effect the Merger are
subject to the satisfaction at or prior to the Effective Time of the following
conditions, any or all of which may be waived in whole or in part by Parent or
Merger Sub, as the case may be, to the extent permitted by applicable law.
 
    (a) Representations and Warranties. The representations and warranties of
  the Company set forth in this Agreement shall be true and correct when made
  and as of the Effective Time with the same force and effect as though the
  same had been made on and as of the Effective Time (except for changes
  permitted by this Agreement and except to the extent they relate to a
  particular date), except for such
 
                                      A-14
<PAGE>
 
  failures to be true and correct which, individually or in the aggregate,
  are not reasonably likely to have a Material Adverse Effect.
 
    (b) Performance. The Company shall have performed in all material
  respects all of its material obligations under this Agreement theretofore
  to be performed.
 
    (c) Officer's Certificate. Parent shall have received at the Effective
  Time a certificate dated the Effective Time and executed by the President
  or a Vice President of the Company certifying to the fulfillment of the
  conditions specified in Sections 8.2(a) and (b) hereof.
 
    (d) Material Adverse Effect. Except as disclosed in the Company SEC
  Reports filed prior to the date of this Agreement, as contemplated by this
  Agreement or as otherwise known to Parent or Merger Sub at or prior to the
  date hereof, since June 30, 1994, the Company has not suffered a Material
  Adverse Effect.
 
  8.3 Additional Conditions to the Obligations of the Company. The obligation
of the Company to effect the Merger is subject to the satisfaction at or prior
to the Effective Time of the following conditions, any and all of which may be
waived in whole or in part by the Company (with the concurrence of the Special
Committee) to the extent permitted by applicable law:
 
    (a) Representations and Warranties. The representations and warranties of
  Parent and Merger Sub set forth in this Agreement shall be true and correct
  when made and as of the Effective Time with the same force and effect as
  though the same had been made on and as of the Effective Time (except for
  changes permitted by this Agreement and except to the extent they relate to
  a particular date), except for such failures to be true and correct which,
  individually or in the aggregate, are not reasonably likely to have a
  Material Adverse Effect.
 
    (b) Performance. Parent and Merger Sub shall have performed in all
  material respects all of their respective material obligations under this
  Agreement theretofore to be performed.
 
    (c) Officer's Certificate. The Company shall have received at the
  Effective Time a certificate dated the Effective Time and executed by the
  President or a Vice President of the Parent certifying to the fulfillment
  of the conditions specified in Sections 8.3(a) and (b) hereof.
 
    (d) Material Adverse Effect. Except as disclosed in the Parent SEC
  Reports filed prior to the date hereof or as contemplated by this
  Agreement, since June 30, 1994, Parent has not suffered a Material Adverse
  Effect.
 
                                   ARTICLE IX
 
                                  Termination
 
  9.1 Termination by Mutual Consent. This Agreement may be terminated and the
Merger may be abandoned at any time prior to the Effective Time, before or
after the approval by stockholders of the Company, by the mutual written
consent of Parent and the Company (with the concurrence of the Special
Committee).
 
  9.2 Termination by Either Parent or the Company. This Agreement may be
terminated and the Merger may be abandoned by either Parent or the Company
(with the concurrence of the Special Committee in the case of termination by
the Company), before or after the approval by stockholders of the Company, if
(a) any court of competent jurisdiction in the United States or some other
governmental body or regulatory authority shall have issued an order, decree or
ruling or taken any other action permanently restraining, enjoining or
otherwise prohibiting the Merger and such order, decree, ruling or other action
shall have become final and nonappealable, (b) the Merger shall not have been
consummated by March 31, 1995, provided that the right to terminate this
Agreement pursuant to this Section 9.2(b) shall not be available to any party
whose failure to fulfill any of its obligation under this Agreement results in
the failure of the Merger to occur on or before
 
                                      A-15
<PAGE>
 
such date, or (c) this Agreement and the Merger shall have been voted on by
stockholders of the Company at the Stockholder Meeting and the vote shall not
have been sufficient to satisfy the condition set forth in Section 8.1(a).
 
  9.3 Termination by Parent. This Agreement may be terminated by Parent and the
Merger may be abandoned prior to the Effective Time, before or after the
approval by stockholders of the Company, if (a) the Company shall have failed
to perform in any material respect any of its material obligations under this
Agreement theretofore to be performed by the Company, which failure to perform
has not been cured within 30 days following receipt by the Company of notice of
such failure to perform from Parent, (b) any material representation or
warranty of the Company contained in this Agreement shall not be true and
correct in all material respects when made or on and as of the Effective Time
as if made on and as of the Effective Time (except to the extent any such
representation or warranty relates to a particular date); provided, that such
failure to be true and correct has not been cured within 30 days following
receipt by the Company of notice of such failure to be true and correct from
Parent, or (c) the Special Committee or the Board of Directors of the Company
withdraws or materially modifies or changes its recommendation of this
Agreement or the Merger and the Special Committee or the Board of Directors of
the Company after consultation with its counsel determines that the failure to
take such action would be inconsistent with its fiduciary duties to the
Company's stockholders under applicable law.
 
  9.4 Termination by the Company. This Agreement may be terminated by the
Company with the concurrence of the Special Committee and the Merger may be
abandoned prior to the Effective Time, before or after the approval by
stockholders of the Company, if (a) Merger Sub or Parent shall have failed to
perform in any material respect any of their material obligations under this
Agreement theretofore to be performed by Parent or Merger Sub, which failure to
perform has not been cured within 30 days following receipt by Parent of notice
of such failure to perform from the Company, (b) any material representation or
warranty of Merger Sub or Parent contained in this Agreement shall not be true
and correct in all material respects when made or on and as of the Effective
Time as if made on and as of the Effective Time (except to the extent any such
representation or warranty relates to a particular date); provided, that such
failure to be true and correct has not been cured within 30 days following
receipt by Parent of notice of such failure to be true and correct from the
Company or (c) the Special Committee or the Board of Directors of the Company
withdraws or materially modifies or changes its recommendation of this
Agreement or the Merger and the Special Committee or the Board of Directors of
the Company after consultation with its counsel determines that the failure to
take such action would be inconsistent with its fiduciary duties to the
Company's stockholders under applicable law.
 
  9.5 Effect of Termination. In the event of the termination and abandonment of
this Agreement pursuant to Article IX, this Agreement shall forthwith become
void and have no effect, without any liability on the part of any party hereto
or its affiliates, directors, officers or stockholders, other than the
provisions of this Section 9.5 and the provisions of Sections 7.5, 10.1 and
10.2 and the last sentence of Section 7.4. Nothing contained in this Section
9.5 shall relieve any party from liability for any breach of this Agreement.
 
                                   ARTICLE X
 
                           Miscellaneous and General
 
  10.1 Payment of Expenses. Whether or not the Merger shall be consummated,
each party hereto shall pay its own expenses incident to preparing for,
entering into and carrying out this Agreement and the consummation of the
transactions contemplated hereby. The cost of printing the S-4 Registration
Statement and the Proxy Statement shall be borne equally by the Company and
Parent.
 
  10.2 Survival of Representations and Warranties. The representations and
warranties made herein shall not survive beyond the earlier of termination of
this Agreement or the Effective Time. This Section 10.2 shall
 
                                      A-16
<PAGE>
 
not limit any covenant or agreement of the parties hereto which by its terms
contemplates performance after the Effective Time.
 
  10.3 Modification or Amendment. Subject to the applicable provisions of the
DGCL, at any time prior to the Effective Time, the parties hereto may modify or
amend this Agreement, by written agreement executed and delivered by duly
authorized officers of the respective parties; provided, however, that after
approval of this Agreement by the stockholders of the Company, no amendment
shall be made which by law requires further approval by such stockholders
without such further approval. Notwithstanding the foregoing, any amendment or
modification of this Agreement shall require the consent of the Special
Committee.
 
  10.4 Waiver of Conditions. The conditions to each of the parties' obligations
to consummate the Merger are for the sole benefit of such party and may be
waived by such party in whole or in part to the extent permitted by applicable
law; provided, however, that the waiver of any conditions by the Company shall
require the consent of the Special Committee.
 
  10.5 Counterparts. For the convenience of the parties hereto, this Agreement
may be executed in any number of counterparts, each such counterpart being
deemed to be an original instrument, and all such counterparts shall together
constitute the same agreement.
 
  10.6 Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware, without giving effect to the
principles of conflicts of law thereof.
 
  10.7 Notices. Any notice, request, instruction or other document to be given
hereunder by any party to the other parties shall be in writing and delivered
personally or sent by registered or certified mail, postage prepaid, or by
facsimile transmission (with a confirming copy sent by overnight courier), as
follows:
 
  (a) If to the Company, to
 
    D.P. Payne
    President and Chief Executive Officer
    Chemical Waste Management, Inc.
    3001 Butterfield Road
    Oak Brook, Illinois 60521
    (708) 218-1620 (telephone)
    (708) 684-7054 (telecopier)
 
    with a copy to:
 
    Kay Hahn Harrell
    Chairperson of the Special Committee of the Board of Directors of
     Chemical Waste Management, Inc.
 
    and
 
    Charles W. Mulaney, Jr., Esq.
    Skadden, Arps, Slate, Meagher & Flom
    333 West Wacker Drive
    Chicago, Illinois 60606
    (312) 407-0700 (telephone)
    (312) 407-0411 (telecopier)
 
                                      A-17
<PAGE>
 
  (b) If to Parent or Merger Sub, to
 
    Herbert A. Getz, Esq.
    Vice President, General Counsel and Secretary
    WMX Technologies, Inc.
    3003 Butterfield Road
    Oak Brook, Illinois 60521
    (708) 572-8840 (telephone)
    (708) 218-1553 (telecopier)
 
or to such other persons or addresses as may be designated in writing by the
party to receive such notice.
 
  10.8 Entire Agreement; Assignment. This Agreement (a) constitutes the entire
agreement among the parties with respect to the subject matter hereof and
supersedes all other prior agreements and understandings, both written and
oral, among the parties or any of them with respect to the subject matter
hereof and (b) shall not be assigned by operation of law or otherwise.
 
  10.9 Parties in Interest. This Agreement shall be binding upon and inure
solely to the benefit of each party hereto and their respective successors and
assigns. Nothing in this Agreement, express or implied, other than the right of
stockholders of the Company to receive the consideration payable in the Merger
pursuant to Article IV hereof is intended to or shall confer upon any other
person any rights, benefits or remedies of any nature whatsoever under or by
reason of this Agreement; provided, however, that the provisions of Section 7.6
shall inure to the benefit of and be enforceable by the present directors and
officers of the Company.
 
  10.10 Certain Definitions. As used herein:
 
    (a) "Significant Subsidiary" shall have the meaning ascribed to it under
  Rule 1-02 of Regulation S-X of the SEC.
 
    (b) "subsidiary" shall mean, when used with reference to any entity, any
  corporation a majority of the outstanding voting securities of which are
  owned directly or indirectly by such former entity.
 
    (c) "Material Adverse Effect" with respect to the Company shall mean any
  adverse change in the financial condition, business, properties or results
  of operation of the Company and its subsidiaries (to the extent owned by
  the Company) which is material to the Company and its subsidiaries (to the
  extent owned by the Company) taken as a whole. "Material Adverse Effect"
  with respect to Parent shall mean any adverse change in the financial
  condition, business, properties or results of operation of Parent and its
  subsidiaries (to the extent owned by Parent) which is material to Parent
  and its subsidiaries (to the extent owned by Parent) taken as a whole.
 
    (d) The "Parent Converted Shares" shall mean the 8,255,993 Shares held by
  Harris Trust and Savings Bank, as Escrow Agent, for delivery upon exchange
  of outstanding Liquid Yield Option(TM) Notes due 2012 (the "Parent LYONs")
  issued by Parent.
 
  10.11 Obligation of Parent. Whenever this Agreement requires Merger Sub to
take any action, such requirement shall be deemed to include an undertaking on
the part of Parent to cause Merger Sub to take such action and a guarantee of
the performance thereof.
 
  10.12 Validity. The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other
provisions of this Agreement, each of which shall remain in full force and
effect.
 
  10.13 Captions. The Article, Section and paragraph captions herein are for
convenience of reference only, do not constitute part of this Agreement and
shall not be deemed to limit or otherwise affect any of the provisions hereof.
 
                                      A-18
<PAGE>
 
  In Witness Whereof, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers as of the date first
above written.
 
                                          Chemical Waste Management, Inc.
 
                                                     /s/ D. P. Payne
                                          By: _________________________________
                                            Name:D. P. Payne
                                            Title:President
 
                                          WMX Technologies, Inc.
 
                                                   /s/ Herbert A. Getz
                                          By: _________________________________
                                            Name:Herbert A. Getz
                                            Title:Vice President
 
                                          WMX Merger Sub, Inc.
 
                                                   /s/ Herbert A. Getz
                                          By: _________________________________
                                            Name:Herbert A. Getz
                                            Title:Vice President
 
                                      A-19
<PAGE>
 
                                                                         ANNEX I
 
                   PRINCIPAL TERMS OF WMX TECHNOLOGIES, INC.
                         CONVERTIBLE SUBORDINATED NOTES
 
Issuer:                              WMX Technologies, Inc. ("WMX").
 
Security:                            Registered subordinated debt obligation
                                     of WMX (a "Note").
 
Exchange Ratio:                      Chemical Waste Management, Inc. ("CHW")
                                     shareholders will receive one Note for
                                     every 81.1 shares of CHW common stock
                                     exchanged in the merger, in accordance
                                     with the terms and provisions of the
                                     Merger Agreement.
 
Issue Price/Principal Amount:        Each Note will have a stated issue price
                                     of $717.80 (the "Stated Issue Price") and
                                     a principal amount (the "Principal
                                     Amount") due at maturity of $1,000 (the
                                     difference between the Issue Price and
                                     the Principal Amount being referred to
                                     herein as the "Stated Discount").
 
Denominations:                       Issuable in minimum denominations of
                                     $1,000 and integral multiples thereof.
 
Maturity:                            Each Note will mature on the tenth
                                     anniversary of the issue date, unless
                                     converted by the Holder of the Note or
                                     purchased or redeemed by WMX prior to
                                     maturity.
 
Yield to Maturity/Interest:          5.75% per annum (computed on a semi-
                                     annual bond equivalent basis) calculated
                                     from the issue date and based on the
                                     Stated Issue Price. Interest will be
                                     payable semi-annually in cash at a rate
                                     of 2% of the Principal Amount per annum.
 
Convertibility:                      Each Note will be convertible at the
                                     option of the holder at any time prior to
                                     maturity, unless previously redeemed or
                                     otherwise purchased by WMX, into that
                                     number of shares of WMX common stock (the
                                     "Conversion Rate") equal to the quotient
                                     derived by dividing 717.80 by the average
                                     of the per share closing price (the "WMX
                                     Closing Price") of WMX common stock on
                                     the 10 trading days prior to the
                                     Stockholder Meeting; provided, however,
                                     that the Conversion Rate shall not be
                                     less than 21.90 or more than 26.76. WMX
                                     may, at its option, pay such Holder cash
                                     for each converted Note in an amount
                                     equal to the Conversion Rate multiplied
                                     by the closing market price of WMX common
                                     stock on the day prior to the date of
                                     conversion. The Conversion Rate will not
                                     be adjusted for accrued Stated Discount
                                     or accrued but unpaid interest upon
                                     conversion and the Holder will not
                                     receive any cash payment representing
                                     accrued Stated Discount or accrued but
                                     unpaid interest; such accrued Stated
                                     Discount and accrued but unpaid interest
                                     will be deemed paid by the WMX common
                                     stock received on conversion.
 
                                      A-20
<PAGE>
 
Listing:                             WMX will apply to list the Notes on the
                                     New York Stock Exchange.
 
Optional Redemption:                 The Notes will not be redeemable by WMX
                                     prior to March 15, 2000. Thereafter, the
                                     Notes will be redeemable in cash at the
                                     option of WMX, in whole or in part, at
                                     any time at the Stated Issue Price plus
                                     accrued Stated Discount and accrued but
                                     unpaid interest through the date of
                                     redemption.
 
Purchase at the Option of the        WMX will purchase the Notes in cash, at
Holder:                              the option of the Holder, on March 15,
                                     1998 and March 15, 2000 at a price per
                                     Note of $790.24 and $843.35, respectively
                                     (Stated Issue Price plus accrued Stated
                                     Discount) plus accrued but unpaid
                                     interest.
 
Subordination:                       The Notes will be subordinated to all
                                     existing and future debt of WMX not
                                     designated as subordinated debt.
 
Sinking Fund:                        None.
 
                                      A-21
<PAGE>
 
                                                                      APPENDIX B
 
                                CS First Boston
 
CS First Boston Corporation                                  55 East 52nd Street
                                                         New York, NY 10055-0186
                                                          Telephone 212 909 2000
 
                                                                October 14, 1994
 
The Special Committee of the Board of Directors
Chemical Waste Management, Inc.
3001 Butterfield Road
Oak Brook, Illinois 60521
 
Members of the Special Committee:
 
  You have asked us to advise you with respect to the fairness to the holders
of the common stock of Chemical Waste Management, Inc. ("CHW"), other than WMX
Technologies, Inc. ("WMX") and its affiliates, from a financial point of view,
of the consideration to be received by such holders pursuant to the terms of
the Agreement and Plan of Merger, dated as of October 14, 1994 (the "Merger
Agreement"), by and among WMX, WMX Merger Sub, Inc., a subsidiary of WMX
("Merger Sub"), and CHW. The Merger Agreement provides for, among other things,
(i) the merger of Merger Sub with and into CHW pursuant to which CHW will
become a wholly owned subsidiary of WMX (the "Merger") and (ii) the conversion
of each outstanding share of the common stock, par value $0.01 per share, of
CHW (the "CHW Common Stock") into the right to receive $12.33 principal amount
at maturity of Convertible Subordinated Notes of WMX, the principal terms of
which are described in Annex I to the Merger Agreement (the "Notes").
 
  In arriving at our opinion, we have reviewed the Merger Agreement and certain
publicly available business and financial information relating to CHW, WMX and
certain of their affiliates. We have reviewed certain other information,
including financial forecasts, provided to us by CHW, WMX and certain of their
affiliates, and have met with the respective managements of CHW, WMX and
certain of their affiliates to discuss the businesses and prospects of CHW, WMX
and such affiliates. We also have evaluated the pro forma financial impact of
the Merger on WMX.
 
  We also have considered certain financial and stock market data of CHW, WMX
and certain of their affiliates, and we have compared that data with similar
data for other publicly held companies in businesses similar to those of CHW,
WMX and such affiliates and we have considered, to the extent publicly
available, the financial terms of certain other business combinations which
have recently been effected. We also considered such other information,
financial studies, analyses and investigations and financial, economic and
market criteria which we deemed relevant.
 
  In connection with our review, we have not assumed responsibility for
independent verification of any of the foregoing information and have relied
upon its being complete and accurate in all respects. With respect to the
financial forecasts and other data reviewed by us, including without
limitation, estimates of liability for environmental matters, reserves
established with respect thereto, and estimates of annual expenses in
connection therewith, the managements of CHW and WMX have advised us that such
forecasts and other data have been reasonably prepared on bases reflecting the
best currently available estimates and judgments of the respective managements
of CHW, WMX and their affiliates as to the future financial performance of CHW,
WMX and such affiliates. In addition, we have not made an independent
evaluation or appraisal of
 
                                      B-1
<PAGE>
 
The Special Committee of the Board of Directors
Chemical Waste Management, Inc.
October 14, 1994
Page 2
 
the assets or liabilities (contingent or otherwise) of CHW, WMX or their
affiliates, nor have we been furnished with any such evaluations or appraisals.
We are not expressing any opinion as to what the value of the Notes actually
will be when issued to CHW stockholders pursuant to the Merger or the price at
which such Notes or the common stock, par value $1.00 per share, of WMX into
which such Notes are convertible will trade subsequent to the Merger. We were
not requested to, and did not, solicit third party indications of interest in
acquiring all or any part of CHW. Our opinion is necessarily based on
information available to us and financial, stock market and other conditions
and circumstances as they exist and can be evaluated on the date hereof.
 
  CS First Boston is an internationally recognized investment banking firm and
is regularly engaged in the valuation of businesses and securities in
connection with mergers and acquisitions, negotiated underwritings, competitive
biddings, secondary distributions of listed and unlisted securities, private
placements and valuations for estate, corporate and other purposes.
 
  We have acted as financial advisor to the Special Committee in connection
with the Merger and will receive a fee for our services. In the ordinary course
of our business, CS First Boston and its affiliates may actively trade the debt
and equity securities of CHW, WMX and their affiliates for their own account
and for the accounts of customers and, accordingly, may at any time hold a long
or short position in such securities. As of the date hereof, CS First Boston
and its affiliates beneficially own approximately 2,800,000 shares of CHW
Common Stock.
 
  It is understood that this letter is for the information of the Special
Committee only in its evaluation of the Merger and may not be relied upon by
any other person, nor does our opinion constitute a recommendation to any
stockholder of CHW as to how such stockholder should vote on the proposed
Merger. This letter is not to be quoted or referred to, in whole or in part, in
any registration statement, prospectus or proxy statement, or in any other
document used in connection with the offering or sale of securities, nor shall
this letter be used for any other purposes, without CS First Boston's prior
written consent.
 
  Based upon and subject to the foregoing, it is our opinion that, as of the
date hereof, the consideration to be received in the Merger by the holders of
CHW Common Stock (other than WMX and its affiliates) is fair to such holders
from a financial point of view.
 
                                          Very truly yours,
 
                                          CS FIRST BOSTON CORPORATION
 
 
                                      B-2
<PAGE>
 
                                                                      APPENDIX C
 
SECTION 262 OF THE DELAWARE GENERAL CORPORATION LAW
 
  262 APPRAISAL RIGHTS. (a) Any stockholder of a corporation of this State who
holds shares of stock on the date of the making of a demand pursuant to
subsection (d) of this section with respect to such shares, who continuously
holds such shares through the effective date of the merger or consolidation,
who has otherwise complied with subsection (d) of this section and who has
neither voted in favor of the merger or consolidation nor consented thereto in
writing pursuant to (S) 228 of this title shall be entitled to an appraisal by
the Court of Chancery of the fair value of his shares of stock under the
circumstances described in subsections (b) and (c) of this section. As used in
this section, the word "stockholder" means a holder of record of stock in a
stock corporation and also a member of record of a nonstock corporation; the
words "stock" and "share" mean and include what is ordinarily meant by those
words and also membership or membership interest of a member of a nonstock
corporation.
 
  (b) Appraisal rights shall be available for the shares of any class or series
of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to (S)(S) 251, 252, 254, 257, 258, 263 or 264 of this title:
 
    (1) Provided, however, that no appraisal rights under this section shall
  be available for the shares of any class or series of stock which, at the
  record date fixed to determine the stockholders entitled to receive notice
  of and to vote at the meeting of stockholders to act upon the agreement of
  merger or consolidation, were either (i) listed on a national securities
  exchange or designated as a national market system security on an
  interdealer quotation system by the National Association of Securities
  Dealers, Inc., or (ii) held of record by more than 2,000 stockholders; and
  further provided that no appraisal rights shall be available for any shares
  of stock of the constituent corporation surviving a merger if the merger
  did not require for its approval the vote of the stockholders of the
  surviving corporation as provided in subsection (f) of (S) 251 of this
  title.
 
    (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
  under this section shall be available for the shares of any class or series
  of stock of a constituent corporation if the holders thereof are required
  by the terms of an agreement of merger or consolidation pursuant to (S)(S)
  251, 252, 254, 257, 258, 263 and 264 of this title to accept for such stock
  anything except: a. Shares of stock of the corporation surviving or
  resulting from such merger or consolidation; b. Shares of stock of any
  other corporation which at the effective date of the merger or
  consolidation will be either listed on a national securities exchange or
  designated as a national market system security on an interdealer quotation
  system by the National Association of Securities Dealers, Inc., or held of
  record by more than 2,000 stockholders; c. Cash in lieu of fractional
  shares of the corporations described in the foregoing subparagraph a. and
  b. of this paragraph; or d. Any combination of the shares of stock and cash
  in lieu of fractional shares described in the foregoing subparagraphs a.,
  b. and c. of this paragraph.
 
    (3) In the event all of the stock of a subsidiary Delaware corporation
  party to a merger effected under (S) 253 of this title is not owned by the
  parent corporation immediately prior to the merger, appraisal rights shall
  be available for the shares of the subsidiary Delaware corporation.
 
  (c) Any corporation may provide in its certificate of incorporation that
appraisal rights under this section shall be available for the shares of any
class or series of its stock as a result of an amendment to its certificate of
incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets
of the corporation. If the certificate of incorporation contains such a
provision, the procedures of this section, including those set forth in
subsections (d) and (e) of this section, shall apply as nearly as is
practicable.
 
  (d) Appraisal rights shall be perfected as follows:
 
    (1) If a proposed merger or consolidation for which appraisal rights are
  provided under this section is to be submitted for approval at a meeting of
  stockholders, the corporation, not less than 20 days prior
 
                                      C-1
<PAGE>
 
  to the meeting, shall notify each of its stockholders who was such on the
  record date for such meeting with respect to shares for which appraisal
  rights are available pursuant to subsections (b) or (c) hereof that
  appraisal rights are available for any or all of the shares of the
  constituent corporations, and shall include in such notice a copy of this
  section. Each stockholder electing to demand the appraisal of his shares
  shall deliver to the corporation, before the taking of the vote on the
  merger or consolidation, a written demand for appraisal of his shares. Such
  demand will be sufficient if it reasonably informs the corporation of the
  identity of the stockholder and that the stockholder intends thereby to
  demand the appraisal of his shares. A proxy or vote against the merger or
  consolidation shall not constitute such a demand. A stockholder electing to
  take such action must do so by a separate written demand as herein
  provided. Within 10 days after the effective date of such merger or
  consolidation, the surviving or resulting corporation shall notify each
  stockholder of each constituent corporation who has complied with this
  subsection and has not voted in favor of or consented to the merger or
  consolidation of the date that the merger or consolidation has become
  effective; or
 
    (2) If the merger or consolidation was approved pursuant to (S) 228 or
  (S) 253 of this title, the surviving or resulting corporation, either
  before the effective date of the merger or consolidation or within 10 days
  thereafter, shall notify each of the stockholders entitled to appraisal
  rights of the effective date of the merger or consolidation and that
  appraisal rights are available for any or all of the shares of the
  constituent corporation, and shall include in such notice a copy of this
  section. The notice shall be sent by certified or registered mail, return
  receipt requested, addressed to the stockholder at his address as it
  appears on the records of the corporation. Any stockholder entitled to
  appraisal rights may, within 20 days after the date of mailing of the
  notice, demand in writing from the surviving or resulting corporation the
  appraisal of his shares. Such demand will be sufficient if it reasonably
  informs the corporation of the identity of the stockholder and that the
  stockholder intends to demand the appraisal of his shares.
 
  (e) Within 120 days after the effective date of the merger or consolidation,
the surviving or resulting corporation or any stockholder who has complied with
subsections (a) and (d) hereof and who is otherwise entitled to appraisal
rights, may file a petition in the Court of Chancery demanding a determination
of the value of the stock of all such stockholders. Notwithstanding the
foregoing, at any time within 60 days after the effective date of the merger or
consolidation, any stockholder shall have the right to withdraw his demand for
appraisal and to accept the terms offered upon the merger or consolidation.
Within 120 days after the effective date of the merger or consolidation, any
stockholder who has complied with the requirements of subsections (a) and (d)
hereof, upon written request, shall be entitled to receive from the corporation
surviving the merger or resulting from the consolidation a statement setting
forth the aggregate number of shares not voted in favor of the merger or
consolidation and with respect to which demands for appraisal have been
received and the aggregate number of holders of such shares. Such written
statement shall be mailed to the stockholder within 10 days after his written
request for such a statement is received by the surviving or resulting
corporation or within 10 days after expiration of the period for delivery of
demands for appraisal under subsection (d) hereof, whichever is later.
 
  (f) Upon the filing of any such petition by a stockholder, service of a copy
thereof shall be made upon the surviving or resulting corporation, which shall
within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation. If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list. The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the
addresses therein stated. Such notice shall also be given by 1 or more
publications at least 1 week before the date of the hearing, in a newspaper of
general circulation published in the City of Wilmington, Delaware or such
publication as the Court deems advisable. The forms of the notices by mail and
by publication shall be approved by the Court, and the costs thereof shall be
borne by the surviving or resulting corporation.
 
                                      C-2
<PAGE>
 
  (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled
to appraisal rights. The Court may require the stockholders who have demanded
an appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as
to such stockholder.
 
  (h) After determining the stockholders entitled to an appraisal, the Court
shall appraise the shares, determining their fair value exclusive of any
element of value arising from the accomplishment or expectation of the merger
or consolidation, together with a fair rate of interest, if any, to be paid
upon the amount determined to be the fair value. In determining such fair
value, the Court shall take into account all relevant factors. In determining
the fair rate of interest, the Court may consider all relevant factors,
including the rate of interest which the surviving or resulting corporation
would have had to pay to borrow money during the pendency of the proceeding.
Upon application by the surviving or resulting corporation or by any
stockholder entitled to participate in the appraisal proceeding, the Court may,
in its discretion, permit discovery or other pretrial proceedings and may
proceed to trial upon the appraisal prior to the final determination of the
stockholder entitled to an appraisal. Any stockholder whose name appears on the
list filed by the surviving or resulting corporation pursuant to subsection (f)
of this section and who has submitted his certificates of stock to the Register
in Chancery, if such is required, may participate fully in all proceedings
until it is finally determined that he is not entitled to appraisal rights
under this section.
 
  (i) The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to
the stockholders entitled thereto. Interest may be simple or compound, as the
Court may direct. Payment shall be so made to each such stockholder, in the
case of holders of uncertificated stock forthwith, and in the case of holders
of shares represented by certificates upon the surrender to the corporation of
the certificates representing such stock. The Court's decree may be enforced as
other decrees in the Court of Chancery may be enforced, whether such surviving
or resulting corporation be a corporation of this State or of any state.
 
  (j) The costs of the proceedings may be determined by the Court and taxed
upon the parties as the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
of the shares entitled to an appraisal.
 
  (k) From and after the effective date of the merger or consolidation, no
stockholder who has demanded his appraisal rights as provided in subsection (d)
of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall
deliver to the surviving or resulting corporation a written withdrawal of his
demand for an appraisal and an acceptance of the merger or consolidation,
either within 60 days after the effective date of the merger or consolidation
as provided in subsection (e) of this section or thereafter with the written
approval of the corporation, then the right of such stockholder to an appraisal
shall cease. Notwithstanding the foregoing, no appraisal proceeding in the
Court of Chancery shall be dismissed as to any stockholder without the approval
of the Court, and such approval may be conditioned upon such terms as the Court
deems just.
 
  (l) The shares of the surviving or resulting corporation to which the shares
of such objecting stockholders would have been converted had they assented to
the merger or consolidation shall have the status of authorized and unissued
shares of the surviving or resulting corporation.
 
                                      C-3
<PAGE>
 
                                    PART II
 
                   INFORMATION NOT REQUIRED IN THE PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Section 145 of the General Corporation Law of Delaware empowers the
registrant to indemnify, subject to the standards set forth therein, any person
in connection with any action, suit or proceeding brought or threatened by
reason of the fact that he is or was a director, officer, employee or agent of
the registrant, or is or was serving as such with respect to another
corporation at the request of the registrant. The General Corporation Law of
Delaware also provides that the registrant may purchase indemnification
insurance on behalf of any such director, officer, employee or agent. Article
Twelfth of the registrant's Restated Certificate of Incorporation and Section 6
of Article VII of the registrant's by-laws each provide for the indemnification
by the registrant of each director, officer, employee or agent of the
registrant to the full extent permitted by the General Corporation Law of
Delaware.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, 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 the 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 director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, 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
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue.
 
  Under an insurance policy maintained by the registrant, the directors and
officers of the registrant are insured, within the limits and subject to the
limitation of the policy, against certain expenses in connection with the
defense of certain claims, actions, suits or proceedings, which may be brought
against them by reason of being or having been such directors and officers.
 
  Section 7.6 of the Merger Agreement provides that the registrant shall cause
CWM to maintain for not less than three years director and officer liability
insurance providing at least the same amounts and coverage for CWM's officers
and directors as the current policies maintained by or on behalf of CWM.
Section 7.6 of the Merger Agreement also provides that all rights to
indemnification now existing in favor of the present directors or officers of
CWM and its subsidiaries as in effect on the date of the Merger Agreement shall
continue for a period of six years beyond the Merger. The directors and
officers of the registrant currently serving as directors of CWM will be
entitled to the benefits of such indemnification and insurance.
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
  (a) A list of exhibits included as part of this registration statement is set
forth in the Exhibit Index appearing elsewhere herein, and is hereby
incorporated by reference herein.
 
  (b) Not applicable.

  (c) The opinion of CS First Boston Corporation is included in the Proxy
Statement-Prospectus.  
 
ITEM 22. UNDERTAKINGS.
 
  The undersigned registrant hereby undertakes:
 
    (a) That, for 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 15(d) of the Securities Exchange Act of 1934 (and, where
  applicable, each filing of an employee benefit plan's annual report
  pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
  incorporated by reference in the registration statement shall be deemed to
  be a new registration statement relating to the securities offered therein,
  and the offering of such securities at that time shall be deemed to be the
  initial bona fide offering thereof.
 
                                      S-1
<PAGE>
 
    (b)(1) That prior to any public reoffering of the securities registered
  hereunder through use of a prospectus which is a part of this registration
  statement, by any person or party who is deemed to be an underwriter within
  the meaning of Rule 145(c), the issuer undertakes that such reoffering
  prospectus will contain the information called for by the applicable
  registration form with respect to reofferings by persons who may be deemed
  underwriters, in addition to the information called for by the other Items
  of the applicable form.
 
    (2) That every prospectus (i) that is filed pursuant to paragraph (1)
  immediately preceding or (ii) that purports to meet the requirements of
  Section 10(a)(3) of the Act and is used in connection with the offering of
  securities subject to Rule 415, will be filed as a part of an amendment to
  the registration statement and will not be used until such amendment is
  effective, and that, for purposes 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
  therein, and the offering of such securities at that time shall be deemed
  to be the initial bona fide offering thereof.
 
    (c) To respond to requests for information that is incorporated by
  reference into the prospectus pursuant to Items 4, 10(b), 11 or 13 of this
  Form, within one business day of receipt of such request, and to send the
  incorporated documents by first class mail or other equally prompt means.
  This includes information contained in documents filed subsequent to the
  effective date of the registration statement through the date of responding
  to the request.
 
    (d) To supply by means of a post-effective amendment all information
  concerning a transaction, and the company being acquired involved therein,
  that was not the subject of and included in the registration statement when
  it became effective.
 
    (e) See Item 20.
 
                                      S-2
<PAGE>
 
                                   SIGNATURES

  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT
HAS DULY CAUSED THIS REGISTRATION STATEMENT, OR AMENDMENT THERETO, TO BE SIGNED
ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED, IN OAK BROOK,
ILLINOIS ON DECEMBER 16, 1994.  
 
                                          WMX TECHNOLOGIES, INC.
                                              
                                              /s/ Dean L. Buntrock  
                                          By___________________________________
                                                     Dean L. Buntrock,
                                              Chairman of the Board and Chief
                                                     Executive Officer
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS REGISTRATION
STATEMENT, OR AMENDMENT THERETO, HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN
THE CAPACITIES AND ON THE DATE INDICATED.
 
<TABLE>
<CAPTION>
             SIGNATURE                           TITLE                    DATE
             ---------                           -----                    ----
 
<S>                                  <C>                           <C>
       /s/ Dean L. Buntrock          Director, Chairman of the
____________________________________   Board and Chief Executive
          Dean L. Buntrock             Officer
 
       /s/ Jerry E. Dempsey          Director
____________________________________
          Jerry E. Dempsey
 
      /s/ Phillip B. Rooney          Director
____________________________________
         Phillip B. Rooney
 
       /s/ Donald F. Flynn           Director
____________________________________
          Donald F. Flynn
 
      /s/ Peter H. Huizenga          Director
____________________________________
         Peter H. Huizenga
 
        /s/ Peer Pedersen            Director
____________________________________
           Peer Pedersen
 
      /s/ James R. Peterson          Director                      December 16 , 1994
____________________________________
         James R. Peterson
 
   /s/ Alexander B. Trowbridge       Director
____________________________________
      Alexander B. Trowbridge
 
     /s/ Howard H. Baker, Jr.        Director
____________________________________
        Howard H. Baker, Jr.
 
       /s/ H. Jesse Arnelle          Director
____________________________________
          H. Jesse Arnelle
 
  /s/ Pastora San Juan Cafferty      Director
____________________________________
     Pastora San Juan Cafferty
 
        /s/ Thomas C. Hau            Vice President, Controller
____________________________________   and Principal Accounting
           Thomas C. Hau               Officer
 
       /s/ James E. Koenig           Senior Vice President,
____________________________________   Treasurer and Principal
          James E. Koenig              Financial Officer
</TABLE>
 
                                      S-3
<PAGE>
 
                             WMX TECHNOLOGIES, INC.
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                              DOCUMENT DESCRIPTION*
     -------                             ---------------------
     <S>       <C>
      1.       Inapplicable
      2.       Agreement and Plan of Merger dated October 14, 1994 among registrant, WMX
                Merger Sub, Inc. and Chemical Waste Management, Inc. (included as Annex A
                to the Proxy Statement-Prospectus forming a part of this registration
                statement)
      3.1(a)   Restated Certificate of Incorporation of registrant, as amended as of May
                24, 1985 (incorporated by reference to Exhibit 4.1 to registrant's report
                on Form 10-Q for the quarter ended June 30, 1985)
      3.1(b)   Certificate of Amendment of Restated Certificate of Incorporation of
                registrant, recorded May 23, 1986 (incorporated by reference to Exhibit
                4(c) to registrant's registration statement on Form S-8, Registration No.
                33-6265)
      3.1(c)   Certificate of Designation of Preferred Stock of registrant, filed January
                30, 1987 (incorporated by reference to Exhibit 3.1(c) to registrant's
                1986 annual report on Form 10-K)
      3.1(d)   Certificate of Amendment of Restated Certificate of Incorporation of
                registrant, filed
                May 15, 1987 (incorporated by reference to Exhibit 4.5(d) to registrant's
                registration statement on Form S-4, Registration No. 33-15518)
      3.1(e)   Certificate of Amendment of Restated Certificate of Incorporation of
                registrant, filed May 19, 1989 (incorporated by reference to Exhibit 3(e)
                to registrant's registration statement on Form S-3, Registration No. 33-
                30190)
      3.1(f)   Certificate of Amendment of Restated Certificate of Incorporation of
                registrant, filed May 18, 1990 (incorporated by reference to Exhibit 4(h)
                to registrant's registration statement on Form S-8, Registration No. 33-
                35936)
      3.1(g)   Conformed copy of Certificate of Incorporation of registrant, as amended
                (incorporated by reference to Exhibit 3.1(g) to registrant's registration
                statement on Form S-4, Registration No. 33-36119)
      3.2      By-laws of registrant, as amended and restated as of December 12, 1991
                (incorporated by reference to Exhibit 3.2 to registrant's registration
                statement on Form S-1, Registration No. 33-44849)
      4.1      Trust Indenture for Liquid Yield Option Notes due 2001 (incorporated by
                reference to Exhibit 4.1 to registrant's registration statement on Form
                S-3, Registration No. 2-96785)
      4.2(a)   Rights Agreement dated as of February 6, 1987, between the registrant and
                Harris Trust & Savings Bank (the "Rights Agreement"), which includes as
                Exhibit A the form of Certificate of Designation of Preferred Stock, as
                Exhibit B, the form of Rights Certificate and, as Exhibit C, the Summary
                of Rights (incorporated by reference to Exhibit 4 to registrant's report
                on Form 8-K dated January 26, 1987)
      4.2(b)   Certificate of Adjustment relating to April 1987 stock split pursuant to
                Section 12 of the Rights Agreement (incorporated by reference to Exhibit
                4.3(b) to registrant's registration statement on Form S-1, Registration
                No. 33-13839)
</TABLE>
- --------
*In the case of incorporation by reference to documents filed under the
   Securities Exchange Act of 1934, the registrant's file number under that Act
   is 1-7327, Chemical Waste Management, Inc.'s file number under that Act is
   1-9253 and Wheelabrator Technologies Inc.'s file number under that Act is 0-
   14246.
 
                                      EX-1
<PAGE>
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                              DOCUMENT DESCRIPTION*
     -------                             ---------------------
     <S>       <C>
      4.2(c)   Certificate of Adjustment relating to December 1989 stock split pursuant
                to Section 12 of the Rights Agreement (incorporated by reference to
                Exhibit 4.3(c) to registrant's 1989 annual report on Form 10-K)
      4.3      Trust Indenture for Liquid Yield Option Notes due 2012 (incorporated by
                reference to Exhibit 4(a) to registrant's registration statement on Form
                S-3, Registration No. 33-24615)
      4.4(a)   Trust Indenture dated as of August 1, 1989 (incorporated by reference to
                Exhibit 4.3(a) to registrant's 1990 annual report on Form 10-K)
      4.4(b)   First Supplemental Indenture dated as of December 1, 1990 (incorporated by
                reference to Exhibit 4.3(b) to registrant's 1990 annual report on Form
                10-K)
      4.5      Trust Indenture dated as of June 1, 1993 (incorporated by reference to
                Exhibit 4 to the registrant's current report on Form 8-K dated July 15,
                1993)
      4.6      Trust Indenture for Convertible Subordinated Notes due 2005 dated as of
                January 20, 1995
      4.7      Trust Indenture for Chemical Waste Management, Inc. Liquid Yield Option
                Notes due 2010 (incorporated by reference to Exhibit 4.1 to the
                registration statement on Form S-3 filed by Chemical Waste Management,
                Inc., Registration No. 33-36212)
      5.       Opinion of Bell, Boyd & Lloyd
      6.       Inapplicable
      7.       Inapplicable
      8.       Opinion of Bell, Boyd & Lloyd as to certain tax matters
      9.       Inapplicable
     10.1      1981 Stock Option Plan for Non-Employee Directors of registrant
                (incorporated by reference to Exhibit 19 to registrant's report on Form
                10-Q for the quarter ended June 30, 1982)
     10.2      WMX Technologies, Inc. 1982 Stock Option Plan, as amended to March 11,
                1988 (incorporated by reference to Exhibit 10.3 to registrant's 1988
                annual report on Form 10-K)
     10.3      Deferred Director's Fee Plan, as amended (incorporated by reference to
                Exhibit 10.3 to registrant's 1990 annual report on Form 10-K)
     10.4      Director's Phantom Stock Plan (incorporated by reference to Exhibit 10.9
                to registrant's 1984 annual report on Form 10-K)
     10.5      Employment Agreement, dated as of September 1, 1986, by and between the
                registrant and Phillip B. Rooney (incorporated by reference to Exhibit
                19.4 to registrant's report on Form 10-Q for the quarter ended September
                30, 1986)
     10.6      Intercorporate Agreement, dated as of September 3, 1986, between Chemical
                Waste Management, Inc. and the registrant (the "CWM Intercorporate
                Agreement") (incorporated by reference to Exhibit 10.6 to Chemical Waste
                Management, Inc.'s registration statement on Form S-1, Registration No.
                33-8509)
     10.7      Amendment No. 1 dated as of January 1, 1992 to CWM Intercorporate
                Agreement (incorporated by reference to Exhibit 10.7(b) to registrant's
                1991 annual report on Form 10-K)
     10.8      WMX Technologies, Inc. Corporate Incentive Bonus Plan (incorporated by
                reference to Exhibit 10.8 to registrant's 1993 annual report on Form 10-
                K)
</TABLE>
- --------
*In the case of incorporation by reference to documents filed under the
   Securities Exchange Act of 1934, the registrant's file number under that Act
   is 1-7327, Chemical Waste Management, Inc.'s file number under that Act is
   1-9253 and Wheelabrator Technologies Inc.'s file number under that Act is 0-
   14246.
 
                                      EX-2
<PAGE>
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                              DOCUMENT DESCRIPTION*
     -------                             ---------------------
     <S>       <C>
     10.9      WMX Technologies, Inc. Supplemental Executive Retirement Plan, as amended
                and restated as of May 14, 1993 (incorporated by reference to Exhibit 10
                to the registrant's current report on Form 8-K dated July 15, 1993)
     10.10     WMX Technologies, Inc. Long Term Incentive Plan (as amended and restated
                as of January 27, 1994) (incorporated by reference to Exhibit 10.10 to
                registrant's 1993 annual report on Form 10-K)
     10.11     Supplemental Retirement Benefit Agreement, dated as of January 1, 1989, by
                and between the registrant and Peter H. Huizenga (incorporated by
                reference to Exhibit 10.16 to post-Effective Amendment No. 2 to
                registrant's registration statement on Form S-1, Registration No. 33-
                13839)
     10.12     Chemical Waste Management, Inc. 1986 Stock Option Plan, as amended
                (incorporated by reference to Exhibit 10.1 to Chemical Waste Management,
                Inc.'s 1989 annual report on Form 10-K)
     10.13     Chemical Waste Management, Inc. 1986 Stock Option Plan for Non-Employee
                Directors (incorporated by reference to Exhibit 10.2 to Chemical Waste
                Management, Inc.'s registration statement on Form S-1, Registration No.
                33-8509)
     10.14     Chemical Waste Management, Inc. Deferred Director's Fee Plan (incorporated
                by reference to Exhibit 10.5 to Chemical Waste Management, Inc.'s
                registration statement on Form S-1, Registration No. 33-8509)
     10.15     WMX Technologies, Inc. Director's Charitable Endowment Plan (incorporated
                by reference to Exhibit 10.20 to registrant's 1989 annual report on Form
                10-K)
     10.16     Supplemental Retirement Benefit Agreement dated as of January 1, 1991 by
                and between registrant and Donald F. Flynn (incorporated by reference to
                Exhibit 10.17 to registrant's 1990 annual report on Form 10-K)
     10.17     Consulting Agreement dated as of January 1, 1991 by and between registrant
                and Donald F. Flynn (incorporated by reference to Exhibit 10.18 to
                registrant's 1990 annual report on Form 10-K)
     10.18     Restricted Unit Plan for Non-Employee Directors of Wheelabrator
                Technologies Inc. as amended through June 10, 1991 (incorporated by
                reference to Exhibit 19.03 to the report on Form 10-Q of Wheelabrator
                Technologies Inc. for the quarter ended June 30, 1991)
     10.19     1988 Stock Plan for Executive Employees of Wheelabrator Technologies Inc.
                and its subsidiaries (the "WTI 1988 Stock Plan") (incorporated by
                reference to Exhibit 28.1 to Amendment No. 1 to the registration
                statement of Wheelabrator Technologies Inc. on Form S-8, Registration No.
                33-31523)
     10.20     Amendments dated as of September 7, 1990 to the WTI 1988 Stock Plan
                (incorporated by reference to Exhibit 19.02 to the 1990 annual report on
                Form 10-K of Wheelabrator Technologies Inc.)
     10.21     Amendment dated as of November 1, 1990 to the WTI 1988 Stock Plan
                (incorporated by reference to Exhibit 19.04 to the 1990 annual report on
                Form 10-K of Wheelabrator Technologies Inc.)
</TABLE>
- --------
*In the case of incorporation by reference to documents filed under the
   Securities Exchange Act of 1934, the registrant's file number under that Act
   is 1-7327, Chemical Waste Management, Inc.'s file number under that Act is
   1-9253 and Wheelabrator Technologies Inc.'s file number under that Act is 0-
   14246.
 
                                      EX-3
<PAGE>
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                              DOCUMENT DESCRIPTION*
     -------                             ---------------------
     <S>       <C>
     10.22     1986 Stock Plan for Executive Employees of Wheelabrator Technologies Inc.
                and its subsidiaries (the "WTI 1986 Stock Plan") (incorporated by
                reference to Exhibit 28.2 to Amendment No. 1 to the registration
                statement of Wheelabrator Technologies Inc. on Form S-8, Registration No.
                33-31523)
     10.23     Amendment dated as of November 1, 1990 to the WTI 1986 Stock Plan
                (incorporated by reference to Exhibit 19.03 to the 1990 annual report on
                Form 10-K of Wheelabrator Technologies Inc.)
     10.24     Description of consulting agreement between registrant and Alexander B.
                Trowbridge (incorporated by reference to Exhibit 10.22 to registrant's
                1989 annual report on Form 10-K)
     10.25     WMX Technologies, Inc. 1992 Stock Option Plan (incorporated by reference
                to Exhibit 10.31 to registrant's registration statement on Form S-1,
                Registration No. 33-44849)
     10.26     WMX Technologies, Inc. 1992 Stock Option Plan for Non-Employee Directors
                (incorporated by reference to Exhibit 10.32 to registrant's registration
                statement on Form S-1, Registration No. 33-44849)
     10.27     Wheelabrator Technologies Inc. 1992 Stock Option Plan (incorporated by
                reference to Exhibit 10.45 to the 1991 annual report on Form 10-K of
                Wheelabrator Technologies Inc.)
     10.28     Deferred Director's Fee Plan of Wheelabrator Technologies Inc. adopted
                June 10, 1991 (incorporated by reference to Exhibit 19.02 to the
                quarterly report on Form 10-Q of Wheelabrator Technologies Inc. for the
                quarter ended June 30, 1991)
     10.29     Waste Management International plc Share Option Plan (incorporated by
                reference to Exhibit 10.1 to the registration statement on Form F-1 of
                Waste Management International plc, Registration No. 33-46511)
     10.30     Amendment dated as of December 6, 1991 to the WTI 1986 Stock Plan
                (incorporated by reference to Exhibit 19.01 to the 1991 annual report on
                Form 10-K of Wheelabrator Technologies Inc.)
     10.31     Amendment dated as of December 6, 1991 to the WTI 1988 Stock Plan
                (incorporated by reference to Exhibit 19.02 to the 1991 annual report on
                Form 10-K of Wheelabrator Technologies Inc.)
     10.32     Amendment dated as of December 6, 1991 to the Restricted Unit Plan for
                Non-Employee Directors of Wheelabrator Technologies Inc. (incorporated by
                reference to Exhibit 19.05 to the 1991 annual report on Form 10-K of
                Wheelabrator Technologies Inc.)
     10.33     Rust International Inc. 1993 Stock Option Plan (incorporated by reference
                to Exhibit 10.41 to registrant's 1992 annual report on Form 10-K)
     10.34     Rust International Inc. 1993 Stock Option Plan for Non-Employee Directors
                (incorporated by reference to Exhibit 10.42 to registrant's 1992 annual
                report on Form 10-K)
     10.35     Amendment No. 1 dated as of May 29, 1992 to Consulting Agreement dated as
                of January 1, 1991 by and between registrant and Donald F. Flynn
                (incorporated by reference to Exhibit 19.1 to registrant's 1992 annual
                report on Form 10-K)
</TABLE>
- --------
*In the case of incorporation by reference to documents filed under the
   Securities Exchange Act of 1934, the registrant's file number under that Act
   is 1-7327, Chemical Waste Management, Inc.'s file number under that Act is
   1-9253 and Wheelabrator Technologies Inc.'s file number under that Act is 0-
   14246.
 
                                      EX-4
<PAGE>
 
<TABLE>
<CAPTION>
     EXHIBIT
     NUMBER                              DOCUMENT DESCRIPTION*
     -------                             ---------------------
     <S>       <C>
     10.36     First Amended and Restated International Business Opportunities Agreement
                by and among registrant, Chemical Waste Management, Inc., Wheelabrator
                Technologies Inc., Waste Management International, Inc., Waste Management
                International plc and Rust International Inc., dated as of January 1,
                1993 (incorporated by reference to Exhibit 28 to the registration
                statement on Form S-3 of Wheelabrator Technologies Inc., Registration No.
                33-59606)
     10.37     Amendment Agreement dated as of January 28, 1994 relating to the
                International Business Opportunities Agreement (incorporated by reference
                to Exhibit 10.19 to the 1993 annual report on Form 10-K of Chemical Waste
                Management, Inc.)
     10.38     Chemical Waste Management, Inc. 1992 Stock Option Plan (incorporated by
                reference to Exhibit 10.20 to the 1991 annual report on Form 10-K of
                Chemical Waste Management, Inc.)
     11.       None
     12.       Computation of Ratios of Earnings to Fixed Charges (incorporated by
                reference to Exhibit 12 to registrant's quarterly report on Form 10-Q for
                the quarter ended September 30, 1994)
     13.       Inapplicable
     14.       Inapplicable
     15.       Inapplicable
     16.       Inapplicable
     21.       List of subsidiaries of registrant (incorporated by reference to Exhibit
                21 to registrant's 1993 annual report on Form 10-K)
     23.1      Consent of Bell, Boyd & Lloyd (included in Exhibit 5)
     23.2      Consent of Arthur Andersen LLP
     23.3      Consent of CS First Boston Corporation
     24.       None
     25.       Statement of Eligibility and Qualification of Trustee on Form T-1
     26.       Inapplicable
     27.       Inapplicable
     28.       None
     99.       None
</TABLE>
- --------
*In the case of incorporation by reference to documents filed under the
   Securities Exchange Act of 1934, the registrant's file number under that Act
   is 1-7327, Chemical Waste Management, Inc.'s file number under that Act is
   1-9253 and Wheelabrator Technologies Inc.'s file number under that Act is 0-
   14246.
 
                                      EX-5

<PAGE>
 
                                                                    EXHIBIT 4.6

                                                                          DRAFT
                                                                          -----


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

                             WMX TECHNOLOGIES, INC.

                         Convertible Subordinated Notes
                                    due 2005



                                   INDENTURE


                          Dated as of January 20, 1995



                 NATIONSBANK OF GEORGIA, NATIONAL ASSOCIATION

                                    TRUSTEE

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

<PAGE>
 
                            CROSS-REFERENCE TABLE/1/

<TABLE>
<CAPTION>
 
  TIA                                                        Indenture
Section                                                       Section
- -------                                                   ---------------
<S>                                                       <C>
 
310(a)(1)   .......................................                  7.10
   (a)(2)   .......................................                  7.10
   (a)(3)   .......................................                  N.A.
   (a)(4)   .......................................                  N.A.
   (b)      .......................................             7.8; 7.10
   (c)      .......................................                  N.A.
311(a)      .......................................                  7.11
   (b)      .......................................                  7.11
   (c)      .......................................                  N.A.
312(a)      .......................................                   2.5
   (b)      .......................................                  12.3
   (c)      .......................................                  12.3
313(a)      .......................................                   7.6
   (b)(1)   .......................................                  N.A.
   (b)(2)   .......................................                   7.6
   (c)      .......................................                  12.2
   (d)      .......................................                   7.6
314(a)      .......................................        4.2; 4.3; 12.2
   (b)      .......................................                  N.A.
   (c)(1)   .......................................                  12.4
   (c)(2)   .......................................                  12.4
   (c)(3)   .......................................                  N.A.
   (d)      .......................................                  N.A.
   (e)      .......................................                  12.5
   (f)      .......................................                  N.A.
315(a)      .......................................                   7.1
   (b)      .......................................             7.5; 12.2
   (c)      .......................................                   7.1
   (d)      .......................................                   7.1
   (e)      .......................................                  6.11
316(a) (last sentence).............................                   2.8
   (a)(1)(A).......................................                   6.5
   (a)(1)(B).......................................                   6.4
   (a)(2)   .......................................                  N.A.
   (b)      .......................................              6.6; 6.7
317(a)(1)   .......................................                   6.8
   (a)(2)   .......................................                   6.9
   (b)      .......................................                   2.4
318(a)      .......................................                  12.1
</TABLE> 

                           N.A. means Not Applicable

__________________
/1/  This Cross-Reference Table shall not, for any purpose, be deemed to be part
     of the Indenture.

<PAGE>

                             TABLE OF CONTENTS/1/

                                                                    Page
                                                                    ----

                                   ARTICLE I

                   DEFINITIONS AND INCORPORATION BY REFERENCE
<TABLE>
<CAPTION>
 
<S>                                                                 <C>
SECTION 1.1  Definitions........................................       1
SECTION 1.2  Other Definitions..................................       6
SECTION 1.3  Incorporation by Reference of
                Trust Indenture Act.............................       7
SECTION 1.4  Rules of Construction..............................       7
 

                                   ARTICLE II

                                 THE SECURITIES
 
SECTION 2.1  Form and Dating....................................       8
SECTION 2.2  Execution and Authentication.......................       8
SECTION 2.3  Registrar, Paying Agent and
                Conversion Agent................................       9
SECTION 2.4  Paying Agent to Hold Money
                in Trust........................................      10
SECTION 2.5  Securityholder Lists...............................      10
SECTION 2.6  Transfer and Exchange..............................      11
SECTION 2.7  Replacement Securities.............................      11
SECTION 2.8  Outstanding Securities;
                Determinations of Holders' Action...............      12
SECTION 2.9  Temporary Securities...............................      13
SECTION 2.10 Cancellation.......................................      14
SECTION 2.11 Defaulted Interest.................................      15
SECTION 2.12 Not Senior to LYONs due 2001, 2010
                or 2012.........................................      15
SECTION 2.13 Persons Deemed Owners..............................      15
 

                                  ARTICLE III

                            REDEMPTION AND PURCHASES
 
SECTION 3.1  Right to Redeem; Notices to Trustee................      15
SECTION 3.2  Selection of Securities to Be Redeemed.............      15
SECTION 3.3  Notice of Redemption...............................      16
SECTION 3.4  Effect of Notice of Redemption.....................      17
SECTION 3.5  Deposit of Redemption Price........................      18
SECTION 3.6  Securities Redeemed in Part........................      18
</TABLE> 

__________________
/1/  This Table of Contents shall not, for any purpose, be deemed to be part of
     the Indenture.

                                       ii

<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<CAPTION> 
                                                                    Page
                                                                    ----
<S>                                                                 <C>  
SECTION 3.7  Conversion Arrangement on
                Call for Redemption.............................      18
SECTION 3.8  Purchase of Securities at Option
                of the Holder...................................      19
SECTION 3.9  Purchase of Securities at Option
                of the Holder upon Change in Control............      21
SECTION 3.10 Effect of Purchase Notice or
                Change in Control Purchase Notice...............      25
SECTION 3.11 Deposit of Purchase Price or
                Change in Control Purchase Price................      26
SECTION 3.12 Securities Purchased in Part.......................      26
SECTION 3.13 Covenant to Comply with
                Securities Laws upon
                Purchase of Securities..........................      27
SECTION 3.14 Repayment to the Company...........................      27
 

                                   ARTICLE IV

                                   COVENANTS

SECTION 4.1  Payment of Securities..............................      28
SECTION 4.2  SEC and Other Reports..............................      28
SECTION 4.3  Compliance Certificate.............................      29
SECTION 4.4  Further Instruments and Acts.......................      29
SECTION 4.5  Maintenance of Office or Agency....................      29


                                   ARTICLE V

                             SUCCESSOR CORPORATION

SECTION 5.1  When Company May Merge or
                Transfer Assets.................................      30


                                  ARTICLE VI

                             DEFAULTS AND REMEDIES

SECTION 6.1  Events of Default..................................      32
SECTION 6.2  Acceleration.......................................      34
SECTION 6.3  Other Remedies.....................................      34
SECTION 6.4  Waiver of Past Defaults............................      35
SECTION 6.5  Control by Majority................................      35
SECTION 6.6  Limitation on Suits................................      35
SECTION 6.7  Rights of Holders to Receive Payment...............      36
SECTION 6.8  Collection Suit by Trustee.........................      36
</TABLE> 

                                      iii
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<CAPTION> 
                                                                    Page
                                                                    ----
<S>                                                                 <C>  
SECTION 6.9  Trustee May File Proofs of Claim...................      37
SECTION 6.10 Priorities.........................................      38
SECTION 6.11 Undertaking for Costs..............................      38
SECTION 6.12 Waiver of Stay, Extension or Usury Laws............      39
 

                                  ARTICLE VII

                                    TRUSTEE

SECTION 7.1  Duties of Trustee..................................      39
SECTION 7.2  Rights of Trustee..................................      41
SECTION 7.3  Individual Rights of Trustee.......................      41
SECTION 7.4  Trustee's Disclaimer...............................      41
SECTION 7.5  Notice of Defaults.................................      42
SECTION 7.6  Reports by Trustee to Holders......................      42
SECTION 7.7  Compensation and Indemnity.........................      42
SECTION 7.8  Replacement of Trustee.............................      43
SECTION 7.9  Successor Trustee by Merger........................      44
SECTION 7.10 Eligibility; Disqualification......................      44
SECTION 7.11 Preferential Collection of
                Claims Against Company..........................      45
SECTION 7.12 Investment of Funds................................      45


                                 ARTICLE VIII

                            DISCHARGE OF INDENTURE

SECTION 8.1  Discharge of Liability on Securities...............      47
SECTION 8.2  Repayment to the Company...........................      48


                                  ARTICLE IX

                                  AMENDMENTS

SECTION 9.1  Without Consent of Holders.........................      48
SECTION 9.2  With Consent of Holders............................      49
SECTION 9.3  Compliance with Trust Indenture Act................      50
SECTION 9.4  Revocation and Effect of
                Consents, Waivers and Actions...................      50
SECTION 9.5  Notation on or Exchange of
                Securities......................................      51
SECTION 9.6  Trustee to Sign Supplemental
                Indentures......................................      51
SECTION 9.7  Effect of Supplemental Indentures..................      51
</TABLE>

                                       iv
<PAGE>
 
                               TABLE OF CONTENTS

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

                                   ARTICLE X

                                 SUBORDINATION
 
SECTION 10.1  Securities Subordinate to
                Senior Indebtedness.............................      51
SECTION 10.2  Payment Over of Proceeds
                upon Dissolution, Etc...........................      52
SECTION 10.3  Acceleration of Securities........................      55
SECTION 10.4  Default on Senior Indebtedness....................      55
SECTION 10.5  Payment Permitted If No Default...................      57
SECTION 10.6  Subrogation to Rights of Holders
                of Senior Indebtedness..........................      58
SECTION 10.7  Provisions Solely to Define
                Relative Rights.................................      58
SECTION 10.8  Trustee to Effectuate Subordination...............      59
SECTION 10.9  No Waiver of Subordination Provisions.............      59
SECTION 10.10 Notice to Trustee.................................      60
SECTION 10.11 Reliance on Judicial Order or
                Certificate of Liquidating Agent................      61
SECTION 10.12 Trustee Not Fiduciary for Holders
                of Senior Indebtedness..........................      62
SECTION 10.13 Rights of Trustee as Holder
                of Senior Indebtedness,
                Preservation of Trustee's Rights................      62
SECTION 10.14 Article X Applicable to Paying Agents.............      62
SECTION 10.15 No Suspension of Remedies.........................      62


                                   ARTICLE XI

                                   CONVERSION

SECTION 11.1  Conversion Privilege..............................      63
SECTION 11.2  Conversion Procedure..............................      66
SECTION 11.3  Fractional Interests in Common Stock..............      68
SECTION 11.4  Taxes on Conversion...............................      68
SECTION 11.5  Company to Provide Common Stock...................      68
SECTION 11.6  Adjustment for Change in Capital Stock............      69
SECTION 11.7  Adjustment for Rights Issue.......................      70
SECTION 11.8  Adjustment for Other Distributions................      72
SECTION 11.9  When Adjustment May Be Deferred...................      75
SECTION 11.10 When No Adjustment Required.......................      75
SECTION 11.11 Notice of Adjustment..............................      76
SECTION 11.12 Voluntary Increase................................      76
SECTION 11.13 Notice of Certain Transactions....................      77
SECTION 11.14 Reorganization of Company;
                Special Distributions...........................      77
</TABLE> 

                                       v
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<CAPTION> 
                                                                    Page
                                                                    ----
<S>                                                                 <C> 
SECTION 11.15 Company Determination Final.......................      78
SECTION 11.16 Trustee's Adjustment Disclaimer...................      78
SECTION 11.17 Simultaneous Adjustments..........................      79
SECTION 11.18 Successive Adjustments............................      79
SECTION 11.19 Rights Issued in Respect of Common
                Stock Issued Upon Conversion....................      79


                                  ARTICLE XII

                                 MISCELLANEOUS

SECTION 12.1  Trust Indenture Act Controls......................      80
SECTION 12.2  Notices...........................................      80
SECTION 12.3  Communication by Holders
                with Other Holders..............................      81
SECTION 12.4  Certificate and Opinion as to
                Conditions Precedent............................      81
SECTION 12.5  Statements Required in
                Certificate or Opinion..........................      81
SECTION 12.6  Separability Clause...............................      82
SECTION 12.7  Rules by Trustee, Paying Agent,
                Conversion Agent and Registrar..................      82
SECTION 12.8  GOVERNING LAW.....................................      82
SECTION 12.9  No Recourse Against Others........................      82
SECTION 12.10 Successors........................................      83
SECTION 12.11 Multiple Originals................................      83
 
EXHIBIT A     Form of Security..................................     A-1
</TABLE>

                                       vi
<PAGE>
 
          INDENTURE, dated as of January 20, 1995 between WMX TECHNOLOGIES,
INC., a Delaware corporation (the "Company"), and NationsBank of Georgia, 
National Association, a national banking association organized under the laws of
the United States of America (the "Trustee").

          Each party agrees as follows for the benefit of the other party and
for the equal and ratable benefit of the Holders of the Company's Convertible
Subordinated Notes due 2005 (the "Securities"):


                                   ARTICLE I

                   DEFINITIONS AND INCORPORATION BY REFERENCE

                SECTION 1.1  Definitions.

          "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 purposes of this definition, "control"
when used with respect to any specified person means the power to direct or
cause the direction of 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.

          "Board of Directors" means either the Board of Directors of the
Company or any committee thereof duly authorized to act on behalf of such Board
of Directors.

          "Business Day" means each day of the year on which banking
institutions in the City of New York, the City of Chicago, the City of
Pittsburgh or the City of Atlanta are not required or authorized to close.

          "Capital Stock" for any corporation means any and all shares,
interests, rights to purchase, warrants, options, participations or other
equivalents of or interests in (however designated) stock issued by that
corporation.

          "Common Stock" shall mean the shares of common stock, $1.00 par value,
of the Company, including the associated Rights, as they exist on the date of
this 
<PAGE>
 
Indenture or any other shares of Capital Stock of the Company into which the
Common Stock shall be reclassified or changed.

          "Company" means the party named as the "Company" in the first
paragraph of this Indenture until a successor replaces it pursuant to the
applicable provisions of this Indenture and, thereafter, shall mean such
successor.  The foregoing sentence shall likewise apply to any subsequent such
successor or successors.

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

          "Debt" means with respect to any person at any date, without
duplication, (i) all obligations of such person for borrowed money, (ii) all
obligations of such person evidenced by bonds, debentures, notes or other
similar instruments, other than any account payable or other accrued current
liability or obligation incurred in the ordinary course of business in
connection with the obtaining of materials or services, (iii) all obligations of
the kinds set forth in (i) and (ii) above of others secured by a lien on any
asset of such person, whether or not such obligation is assumed by such person,
(iv) all obligations of such person with respect to letters of credit (or local
guaranties, as applicable) or bankers' acceptances issued for the account of
such person or with respect to interest rate protection agreements or currency
exchange or purchase agreements, (v) all obligations of such person in respect
to leases of such person as lessee which, in conformity with generally accepted
accounting principles, are required to be accounted for as capitalized lease
obligations on the balance sheet of such person, (vi) all obligations of such
person issued or assumed as the deferred purchase price of property, all
conditional sale obligations of such person and all obligations of such person
under any title retention agreement, and (vii) all obligations of the kind set
forth in (i), (ii), (iv), (v) or (vi) above of others for the payment of which
such person is responsible or liable as obligor or guarantor.

                                      -2-
<PAGE>
 
          "Default" means any event which is, or after notice or passage of 
time or both would be, an Event of Default.

          "Holder" or "Securityholder" means a person in whose name a Security 
is registered on the Registrar's books.

          "Indenture" means this Indenture, as amended or supplemented from time
to time in accordance with the terms hereof, including the provisions of the TIA
that are deemed to be part hereof.

          "Issue Date" of any Security means the date on which the Security was
originally issued or deemed issued as set forth on the face of the Security.

          "Issue Price" means the issue price for the Security as defined for 
federal income tax purposes.

          "Officer" means the Chairman of the Board, the President, any Senior
Vice President, any Vice President, the Treasurer, the Secretary, any Assistant
Treasurer or any Assistant Secretary of the Company.

          "Officers' Certificate" means a written certificate containing the
information specified in Sections 12.4 and 12.5, signed in the name of the
Company by its Chairman of the Board, its President, a Senior Vice President or
a Vice President, and by its Treasurer, an Assistant Treasurer, its Secretary or
an Assistant Secretary, and delivered to the Trustee.  An Officers' Certificate
given pursuant to Section 4.3 shall be signed by the principal executive
financial or accounting officer of the Company but need not contain the
information specified in Sections 12.4 and 12.5.

          "Opinion of Counsel" means a written opinion containing the
information specified in Sections 12.4 and 12.5, from legal counsel who is
acceptable to the Trustee.  The counsel may be an employee of, or counsel to,
the Company or the Trustee.

          "Original Issue Discount" of any Security means original issue 
discount as defined for federal income tax purposes.

                                      -3-
<PAGE>
 
          "Person" or "person" means any individual, corporation, partnership,
joint venture, association, joint-stock company, trust, unincorporated
organization, limited liability company, limited liability partnership or
government or any agency or political subdivision thereof.

          "Principal Amount at Maturity" of a Security means the Principal
Amount at Maturity as set forth on the face of the Security.

          "Redemption Date" or "redemption date" shall mean the date specified
for redemption of the Securities in accordance with the terms of the Securities
and this Indenture.

          "Redemption Price" or "redemption price" shall have the meaning set 
forth in paragraph 5 of the Securities.

          "Responsible Officer", when used with respect to the Trustee, means
any officer within the Corporate Trust Department (or any successor department)
including without limitation any vice president, any assistant vice president,
any trust officer, any assistant secretary 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.

          "Rights" shall mean the rights to purchase shares of Series A
Preferred Stock of the Company, pursuant to the Rights Agreement.

          "Rights Agreement" shall mean the Rights Agreement, dated as of
February 6, 1987, as amended, between the Company and the Harris Trust and
Savings Bank, as Rights Agent, or any subsequent similar rights agreement
relating to the Common Stock.

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

                                      -4-
<PAGE>
 
          "Securities" means any of the Company's Convertible Subordinated Notes
due 2005, as amended or supplemented from time to time, issued under this
Indenture.

          "Securityholder" or "Holder" means a person in whose name a Security 
is registered on the Registrar's books.

          "Stated Discount" of any Security means the difference between the
Stated Issue Price and the Principal Amount at Maturity of the Security as set
forth on the face of the Security.

          "Stated Issue Price" of any Security means, in connection with the
original issuance of such Security, the stated initial issue price of the
Security as set forth on the face of the Security.

          "Stated Maturity," when used with respect to any Security, means the
date specified in such Security as the fixed date on which an amount equal to
the Principal Amount at Maturity of such Security is due and payable.

          "Subsidiary" means (i) a corporation, a majority of whose Capital
Stock with voting power, under ordinary circumstances, to elect directors is, at
the date of determination, directly or indirectly owned by the Company, by one
or more Subsidiaries of the Company or by the Company and one or more
Subsidiaries of the Company, (ii) a partnership in which the Company or a
Subsidiary of the Company holds a majority interest in the equity capital or
profits of such partnership, or (iii) any other person (other than a
corporation) in which the Company, a Subsidiary of the Company or the Company
and one or more Subsidiaries of the Company, directly or indirectly, at the date
of determination, has (x) at least a majority ownership interest or (y) the
power to elect or direct the election of a majority of the directors or other
governing body of such person.

          "TIA" means the Trust Indenture Act of 1939 as in effect on the date
of this Indenture, provided, however, that in the event the TIA is amended 
after such date, TIA means, to the extent required by any such amendment, the
TIA as so amended.

                                      -5-
<PAGE>
 
          "trading day" means a day during which trading in securities generally
occurs on the New York Stock Exchange or, if the Common Stock is not listed on
the New York Stock Exchange, on the principal other national or regional
securities exchanges on which the Common Stock is then listed, or, if the Common
Stock is not listed on a national or regional securities exchange, on the Nasdaq
Stock Market or the principal other market on which the Common Stock is then
traded.

          "Trustee" means the party named as the "Trustee" in the first
paragraph of this Indenture until a successor replaces it pursuant to the
applicable provisions of this Indenture and, thereafter, shall mean such
successor.  The foregoing sentence shall likewise apply to any subsequent such
successor or successors.

          SECTION 1.2  Other Definitions.
<TABLE>
<CAPTION>
 
                                        Defined in
                Term                     Section
                ----                    ----------
<S>                                     <C>  
"Associate"..........................       3.9(a)
"Available Funds"....................       7.12
"Average Quoted Price"...............      11.1
"Bankruptcy Law".....................       6.1
"beneficial owner"...................       3.9(a)
"Change in Control"..................       3.9(a)
"Change in Control Purchase Date"....       3.9(a)
"Change in Control Purchase Notice"..       3.9(c)
"Change in Control Purchase Price"...       3.9(a)
"Conversion Agent"...................       2.3
"Conversion Date"....................      11.2
"Conversion Rate"....................      11.1
"Custodian"..........................       6.1
"Document"...........................       7.2(a)
"Event of Default"...................       6.1
"Exchange Act".......................       3.9(a)
"Ex-Dividend Time"...................      11.1
"Extraordinary Cash Dividend"........      11.8
"Indemnified Party"..................       7.7(c)
"Investment Return"..................       7.12
"Investment Securities"..............       7.12
"Notice of Default"..................       6.1
"Paying Agent".......................       2.3
"Purchase Date"......................       3.8(a)
"Purchase Notice"....................       3.8(a)
"Purchase Price".....................       3.8(a)
</TABLE> 

                                      -6-
<PAGE>
 
<TABLE> 
<S>                                     <C> 
"Quoted Price".......................      11.1
"Registrar"..........................       2.3
"Sale Price".........................      11.1
"Securities Act".....................       7.4
"Senior Indebtedness"................      10.1
"Time of Determination"..............      11.1
</TABLE>

          SECTION 1.3  Incorporation by Reference of Trust Indenture Act.
Whenever this Indenture refers to a provision of the TIA, the provision is
incorporated by reference in and made a part of this Indenture.  The following
TIA terms used in this Indenture have the following meanings:

          "Commission" means the SEC.
          
          "indenture securities" means the Securities.

          "indenture security holder" means a Securityholder.

          "indenture to be qualified" means this Indenture.

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

          "obligor" on the indenture securities means the Company.

          All other TIA terms used in this Indenture that are defined by the
TIA, defined by TIA reference to another statute or defined by SEC rule have the
meanings assigned to them by such definitions.

          SECTION 1.4 Rules of Construction. Unless the context otherwise
requires:

               (1)  a term has the meaning assigned to it;

               (2)  an accounting term not otherwise defined has the meaning
     assigned to it in accordance with generally accepted accounting principles
     as in effect from time to time;

                                      -7-
<PAGE>
 
               (3)  "or" is not exclusive;

               (4)  "including" means including, without limitation; and

               (5)  words in the singular include the plural, and words in the
     plural include the singular.


                                   ARTICLE II

                                 THE SECURITIES

          SECTION 2.1   Form and Dating.  The Securities and the Trustee's
certificate of authentication shall be substantially in the form of Exhibit A,
which is incorporated in and made a part of this Indenture.  The Securities may
have notations, legends or endorsements required by law, stock exchange rule or
usage (provided that any such notation, legend or endorsement required by usage
is in a form acceptable to the Company).  The Company shall provide any such 
notations, legends or endorsements to the Trustee in writing.  Each Security 
shall be dated the date of its authentication.

          SECTION 2.2  Execution and Authentication.  The Securities shall be
executed on behalf of the Company by its Chairman of the Board, its President,
one of its Senior Vice Presidents or one of its Vice Presidents, under its
corporate seal reproduced thereon and 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 the time of the execution of the Securities 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
authentication of such Securities.

          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
certifi-

                                      -8-
<PAGE>
 
cate of authentication substantially in the form provided for herein duly
executed by the Trustee by manual signature of an authorized signatory, and such
certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder.

          The Trustee shall authenticate and deliver Securities for original
issue in an aggregate Principal Amount at Maturity of up to $810,000,000 upon a
Company Order without any further action by the Company. The aggregate Principal
Amount at Maturity of Securities outstanding at any time may not exceed the
amount set forth in the foregoing sentence, except as provided in Section 2.7.

          The Securities shall be issued only in registered form, without
coupons, and only in denominations of $1,000 of Principal Amount at Maturity and
any integral multiple thereof.
 
          SECTION 2.3  Registrar, Paying Agent and Conversion Agent.  The
Company shall maintain an office or agency where Securities may be presented for
registration of transfer or for exchange ("Registrar"), an office or agency
where Securities may be presented for purchase, redemption or payment ("Paying
Agent") and an office or agency where Securities may be presented for conversion
("Conversion Agent"). The Registrar shall keep a register of the Securities and
of their transfer and exchange. The Company may have one or more co-registrars,
one or more additional paying agents and one or more additional conversion
agents. The term Registrar includes any co-registrar, including any named
pursuant to Section 4.5. The term Paying Agent includes any additional paying
agent, including any named pursuant to Section 4.5. The term Conversion Agent
includes any additional conversion agent, including any named pursuant to
Section 4.5.

          The Company shall enter into an appropriate agency agreement with any
Registrar, Paying Agent, Conversion Agent or co-registrar (other than the
Trustee). The agreement shall implement the provisions of this Indenture that
relate to such agent. The Company shall notify the Trustee of the name and
address of any such agent. If the Company fails to maintain a Registrar, Paying
Agent or Conversion Agent, the Trustee shall act 

                                      -9-
<PAGE>
 
as such and shall be entitled to appropriate compensation therefor pursuant to
Section 7.7. The Company or any Subsidiary or an Affiliate of either of them may
act as Paying Agent, Registrar, Conversion Agent or co-registrar.

          The Company initially appoints the Trustee as Registrar,
Conversion Agent and Paying Agent in connection with the Securities.

          SECTION 2.4  Paying Agent to Hold Money in Trust.  Except as
otherwise provided herein, on or prior to each due date of payments in respect
of any Security, the Company shall deposit with the Paying Agent a sum of money
(in immediately available funds if deposited on the due date) sufficient to make
such payments when so becoming due. The Company shall require each Paying Agent
(other than the Trustee) to agree in writing that the Paying Agent shall hold in
trust for the benefit of Securityholders or the Trustee all money held by the
Paying Agent for the making of payments in respect of the Securities and shall
notify the Trustee of any default by the Company in making any such payment. At
any time during the continuance of any such default, the Paying Agent shall,
upon the written request of the Trustee, forthwith pay to the Trustee all money
so held in trust. If the Company, a Subsidiary or an Affiliate of either of them
acts as Paying Agent, it shall segregate the money held by it as Paying Agent
and hold it as a separate trust fund. The Company at any time may require a
Paying Agent to pay all money held by it to the Trustee and to account for any
funds disbursed by it. Upon doing so, the Paying Agent shall have no further
liability for the money.

          SECTION 2.5 Securityholder Lists. The Trustee shall preserve in as
current a form as is reasonably practicable the most recent list available to it
of the names and addresses of Securityholders. If the Trustee is not the
Registrar, the Company shall cause to be furnished to the Trustee at least
semiannually, not more than 15 days after each regular record date for the 
payment of interest on the Securities, a list, in such form as the Trustee may 
reasonably require, of the names and addresses of Securityholders as of such
record date and at such other times as the Trustee may request in writing a list
in such form and as of such date as the Trustee may reasonably require of the
names and addresses of Securityholders.

                                      -10-
<PAGE>
 
          SECTION 2.6 Transfer and Exchange. Upon surrender for registration of
transfer of any Security, together with a written instrument of transfer
satisfactory to the Registrar duly executed by the Securityholder or such
Securityholder's attorney duly authorized in writing, at the office or agency of
the Company designated as Registrar pursuant to Section 2.3, 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 any
authorized denomination or denominations, of a like aggregate Principal Amount
at Maturity. The Company shall not charge a service charge for any registration
of transfer or exchange, but the Company may require payment of a sum sufficient
to pay all taxes, assessments or other governmental charges that may be imposed
in connection with the transfer or exchange of the Securities from the
Securityholder requesting such transfer or exchange.

          At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination or denominations, of a like aggregate
Principal Amount at Maturity, upon surrender of the Securities to be exchanged,
together with a written instrument of transfer satisfactory to the Registrar
duly executed by the Securityholder or such Securityholder's attorney duly
authorized in writing, 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.

          The Company shall not be required to make, and the Registrar need not
register, transfers or exchanges of Securities selected for redemption (except,
in the case of Securities to be redeemed in part, the portion thereof not to be
redeemed) or any Securities in respect of which a Purchase Notice or Change in
Control Purchase Notice has been given and not withdrawn by the Holder thereof
in accordance with the terms of this Indenture (except, in the case of
Securities to be purchased in part, the portion thereof not to be purchased) or
any Securities for a period of 15 days before a selection of Securities to be
redeemed.

          SECTION 2.7 Replacement Securities. If (a) any mutilated Security is
surrendered to the Trustee, or 

                                      -11-
<PAGE>
 
(b) the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them to
save each 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 written request the Trustee shall
authenticate and deliver, in exchange for any such mutilated Security or in lieu
of any such destroyed, lost or stolen Security, a new Security of like tenor and
Principal Amount at Maturity, 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, or is about to be purchased by the
Company pursuant to Article III hereof, the Company in its discretion may,
instead of issuing a new Security, pay or purchase such Security, as the case
may be.

          Upon the issuance of any new Securities under this Section 2.7, 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 fees and expenses of the Trustee) connected therewith.

          Every new Security issued pursuant to this Section 2.7 in lieu of any
mutilated, 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 benefits of this Indenture equally and proportionately with any
and all other Securities duly issued hereunder.

          The provisions of this Section 2.7 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 2.8  Outstanding Securities; Determinations of Holders' 
Action.  Securities outstanding at any time are all the Securities 
authenticated by the Trustee except for those cancelled by it, those delivered

                                      -12-
<PAGE>
 
to it for cancellation and those described in this Section 2.8 as not
outstanding. A Security does not cease to be outstanding because the Company or
an Affiliate thereof holds the Security; provided, however, that in determining
whether the Holders of the requisite Principal Amount at Maturity of Securities
have given or concurred in any request, demand, authorization, direction,
notice, consent or waiver hereunder, Securities owned by the Company or any
other obligor upon the Securities or any Affiliate of the Company or 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, only
Securities which a Responsible Officer of the Trustee knows to be so owned shall
be so disregarded. Subject to the foregoing, only Securities outstanding at the
time of such determination shall be considered in any such determination
(including, without limitation, determinations pursuant to Articles VI and IX).

          If a Security is replaced pursuant to Section 2.7, it ceases to be
outstanding unless the Trustee receives proof satisfactory to it that the
replaced Security is held by a bona fide purchaser.

          If the Paying Agent holds, in accordance with this Indenture, on a
Redemption Date, or on the Business Day following the Purchase Date or a Change
in Control Purchase Date, or on Stated Maturity, money sufficient to pay
Securities payable on that date, then immediately after such Redemption Date,
Purchase Date, Change in Control Purchase Date or Stated Maturity, as the case
may be, such Securities shall cease to be outstanding and Stated Discount and
interest on such Securities shall cease to accrue; 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. If a Security is converted in accordance with Article XI, then from
and after the time of conversion on the Conversion Date, such Security shall
cease to be outstanding and Stated Discount and interest shall cease to accrue
on such Security.

          SECTION 2.9  Temporary Securities.  Pending the preparation of
definitive Securities, the Company may 

                                      -13-
<PAGE>
 
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 and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Securities may determine, as conclusively evidenced
by their execution of such Securities.

          If temporary Securities are issued, the Company will cause
definitive Securities to be prepared without unreasonable delay. After the
preparation of definitive Securities, the temporary Securities shall be
exchangeable for definitive Securities upon surrender of the temporary
Securities at the office or agency of the Company designated for such purpose
pursuant to Section 2.3, without charge to the Holder. Upon surrender for
cancellation of any one or more temporary Securities the Company shall execute
and the Trustee shall authenticate and deliver in exchange therefor a like
Principal Amount at Maturity of definitive Securities of authorized
denominations. Until so exchanged the temporary Securities shall in all respects
be entitled to the same benefits under this Indenture as definitive Securities.

          SECTION 2.10  Cancellation.  All Securities surrendered for payment,
purchase by the Company pursuant to Article III, conversion, redemption or
registration of transfer or exchange shall, if surrendered to any person other
than the Trustee, be delivered to the Trustee and shall be promptly cancelled by
it. 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. The Company may not issue new
Securities to replace Securities it has paid or delivered to the Trustee for
cancellation or that any Holder has converted pursuant to Article XI. 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 destroyed by
the Trustee and the Trustee shall deliver a certificate of destruction to the
Company semi-annually.

                                      -14-
<PAGE>
 
          SECTION 2.11  Defaulted Interest.  If the Company defaults in a
payment of interest on the Securities, it shall pay the defaulted interest to
the Securityholders on a subsequent special record date. The Company shall fix
the special record date and payment date in a manner satisfactory to the
Trustee. At least 15 days before the special record date, the Company shall mail
to each Securityholder a notice that states the special record date, the payment
date and the amount of defaulted interest.

          SECTION 2.12  Not Senior to LYONs due 2001, 2010 or 2012.  The
Securities are not senior in right of payment to the Company's Liquid Yield
Option Notes, Zero Coupon--Subordinated due 2001, the Company's Liquid Yield
Option Notes, Zero Coupon--Subordinated due 2012 or the Liquid Yield Option
Notes due 2010 of Chemical Waste Management, Inc., which are being assumed by
the Company as of this date.

          SECTION 2.13  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 the Security or the payment of any Redemption Price, Purchase Price
or Change in Control Purchase Price in respect thereof, and interest thereon, 
for the purpose of conversion 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.


                                  ARTICLE III

                            REDEMPTION AND PURCHASES

          SECTION 3.1   Right to Redeem; Notices to Trustee.  The Company, at
its option, may redeem the Securities in accordance with the provisions of
paragraphs 5 and 7 of the Securities.  If the Company elects to redeem
Securities pursuant to paragraph 5 of the Securities, it shall notify the
Trustee in writing of the Redemption Date, the Principal Amount at Maturity of
Securities to be redeemed and the Redemption Price.

          The Company shall give the notice to the Trustee provided for in this
Section 3.1 by a Company Order at least 60 days before the Redemption Date
(unless a shorter notice shall be satisfactory to the Trustee).

          SECTION 3.2 Selection of Securities to Be Redeemed. If less than all
the Securities are to be redeemed, the Trustee shall select the Securities to be
redeemed pro rata or by lot or by any other method the Trustee considers fair
and appropriate (so long as such method is not prohibited by the rules of any
stock exchange on which the Securities are then listed). The Trustee shall make
the selection at least 30 days but not 

                                      -15-
<PAGE>
 
more than 60 days before the Redemption Date from outstanding Securities not
previously called for redemption. The Trustee may select for redemption portions
of the Principal Amount at Maturity of Securities that have denominations larger
than $1,000. Securities and portions of them the Trustee selects shall be in
Principal Amounts at Maturity of $1,000 or an integral multiple of $1,000.
Provisions of this Indenture that apply to Securities called for redemption also
apply to portions of Securities called for redemption. The Trustee shall notify
the Company promptly of the Securities or portions of Securities to be redeemed.

          If any Security selected for partial redemption is converted in part
before termination of the conversion right with respect to the portion of the
Security so selected, the converted portion of such Security so selected for
redemption shall be deemed (so far as may be) to be the portion selected for
redemption. Securities which have been converted during a selection of
Securities to be redeemed may be treated by the Trustee as outstanding for the
purpose of such selection.

          SECTION 3.3  Notice of Redemption.  At least 30 days but not more than
60 days before a Redemption Date, the Company shall mail a notice of redemption
by first-class mail, postage prepaid, to each Holder of Securities to be
redeemed.

          The notice shall identify the Securities to be redeemed and shall
state:

               (1)  the Redemption Date;

               (2)  the Redemption Price together with the amount of accrued but
     unpaid interest to the Redemption Date;

               (3)  the Conversion Rate;

               (4)  the name and address of the Paying Agent and Conversion 
     Agent;

               (5)  that Securities called for redemption may be converted at
     any time before the close of business on the Redemption Date;

                                      -16-
<PAGE>
 
               (6)  that Holders who want to convert Securities must satisfy the
     requirements set forth in paragraph 9 of the Securities;

               (7)  that Securities called for redemption must be surrendered to
     the Paying Agent to collect the Redemption Price;

               (8)  if fewer than all the outstanding Securities are to be
     redeemed, the certificate number and Principal Amounts at Maturity of the
     particular Securities to be redeemed;

               (9)  that, unless the Company defaults in making payment of such
     Redemption Price, Stated Discount and interest on Securities called for
     redemption will cease to accrue immediately after the Redemption Date; and

               (10)  the CUSIP number of the Securities.

          At the Company's request, the Trustee shall give the notice of
redemption in the Company's name and at the Company's expense, provided that the
Company makes such request at least three Business Days prior to such notice of
redemption.

          SECTION 3.4  Effect of Notice of Redemption.  Once notice of
redemption is given, Securities called for redemption become due and payable on
the Redemption Date and at the Redemption Price stated in the notice plus
accrued but unpaid interest to the Redemption Date except for Securities which
are converted in accordance with the terms of this Indenture.  Upon the
Redemption Date and the deposit (as provided in Section 3.5 hereof) with the
Paying Agent of money sufficient to pay the Redemption Price plus accrued but
unpaid interest, the Holder of such Securities called for Redemption shall
thereafter be entitled to receive solely the Redemption Price plus accrued but
unpaid interest to the Redemption Date with respect to such Securities. Upon the
later of the Redemption Date or the date such Securities are surrendered to the
Paying Agent, such Securities called for Redemption shall be paid at the
Redemption Price plus accrued but unpaid interest to the Redemption Date stated
in the notice.

                                      -17-
<PAGE>
 
          SECTION 3.5  Deposit of Redemption Price.  Prior to or on the
Redemption Date, the Company shall deposit with the Paying Agent (or if the
Company or a Subsidiary or an Affiliate of either of them is the Paying Agent,
shall segregate and hold in trust) money sufficient to pay the Redemption Price
plus accrued but unpaid interest to the Redemption Date of all Securities to be
redeemed on that date other than Securities or portions of Securities called for
redemption which on or prior thereto have been delivered by the Company to the
Trustee for cancellation or that the Conversion Agent has informed the Trustee
have been converted.  The Paying Agent shall as promptly as practicable return
to the Company any money, with interest, if any, thereon, not required for that
purpose because of conversion of Securities pursuant to Article XI.  If such
money is then held by the Company or a Subsidiary or an Affiliate of either in
trust and is not required for such purpose it shall be discharged from such
trust.

          SECTION 3.6  Securities Redeemed in Part.  Upon surrender of a
Security that is redeemed in part, the Company shall execute and the Trustee
shall authenticate and deliver to the Holder a new Security in an authorized
denomination equal in Principal Amount at Maturity to the unredeemed portion of
the Security surrendered.

          SECTION 3.7  Conversion Arrangement on Call for Redemption.  In
connection with any redemption of Securities, the Company may arrange for the
purchase and conversion of any Securities called for redemption by an agreement
with one or more investment bankers or other purchasers to purchase such
Securities by paying to the Paying Agent in trust for the Securityholders, on or
before the close of business on the Redemption Date, an amount that, together
with any amounts deposited with the Paying Agent by the Company for the
redemption of such Securities, is not less than the Redemption Price, together
with accrued but unpaid interest to the Redemption Date, of such Securities.
Notwithstanding anything to the contrary contained in this Article III, the
obligation of the Company to pay the Redemption Price of such Securities,
together with all accrued but unpaid interest, shall be deemed to be satisfied
and discharged to the extent such amount is so paid by such purchasers. If such
an agreement is entered into, any Securities not duly surrendered for conversion
by the Holders thereof 

                                      -18-
<PAGE>
 
may, at the option of the Company, be deemed, to the fullest extent permitted by
law, acquired by such purchasers from such Holders and (notwithstanding anything
to the contrary contained in Article XI) surrendered by such purchasers for
conversion, all as of immediately prior to the close of business on the
Redemption Date, subject to payment of the above amount as aforesaid. The Paying
Agent shall hold and pay to the Holders whose Securities are selected for
redemption any such amount paid to it for purchase and conversion in the same
manner as it would moneys deposited with it by the Company for the redemption of
Securities. Without the Paying Agent's prior written consent, no arrangement
between the Company and such purchasers for the purchase and conversion of any
Securities shall increase or otherwise affect any of the powers, duties,
responsibilities or obligations of the Paying Agent as set forth in this
Indenture, and the Company agrees to indemnify the Paying Agent from, and hold
it harmless against, any loss, liability or expense arising out of or in
connection with any such arrangement for the purchase and conversion of any
Securities between the Company and such purchasers, including the costs and
expenses incurred by the Paying Agent in the defense of any claim or liability
arising out of or in connection with the exercise or performance of any of its
powers, duties, responsibilities or obligations under this Indenture.

          SECTION 3.8  Purchase of Securities at Option of the Holder.
Securities shall be purchased by the Company pursuant to paragraph 6 of the
Securities as of March 15, 1998 and March 15, 2000 (each, a "Purchase Date") at
the purchase price specified therein (each, a "Purchase Price"), together with
accrued but unpaid interest to the Purchase Date, at the option of the Holder
thereof, upon:

          (a)  delivery to the Paying Agent, by the Holder, of a written notice
     of purchase (a "Purchase Notice") at any time from the opening of business
     on the date that is 20 Business Days prior to a Purchase Date until the
     close of business on such Purchase Date stating:

               (1)  the certificate number of the Security which the Holder will
     deliver to be purchased,

                                      -19-
<PAGE>
 
               (2)  the portion of the Principal Amount at Maturity of the
     Security which the Holder will deliver to be purchased, which portion must
     be $1,000 or an integral multiple thereof, and

               (3)  that such Security shall be purchased as of the Purchase
     Date pursuant to the terms and conditions specified in paragraph 6 of the
     Securities and in this Indenture; and

          (b)  delivery of such Security to the Paying Agent prior to, on or
     after the Purchase Date (together with all necessary endorsements) at the
     offices of the Paying Agent, such delivery being a condition to receipt by
     the Holder of the Purchase Price together with accrued but unpaid interest
     to the Purchase Date therefor; provided, however, that such Purchase Price
     together with accrued but unpaid interest to the Purchase Date shall be so
     paid pursuant to this Section 3.8 only if the Security so delivered to the
     Paying Agent shall conform in all respects to the description thereof in
     the related Purchase Notice.

          The Company shall purchase from the Holder thereof, pursuant to this
Section 3.8, a portion of a Security if the Principal Amount at Maturity of such
portion is $1,000 or an integral multiple of $1,000.  Provisions of this
Indenture that apply to the purchase of all of a Security also apply to the
purchase of such portion of such Security.

          Any purchase by the Company contemplated pursuant to the provisions of
this Section 3.8 shall be consummated by the delivery of the consideration to be
received by the Holder promptly following the later of the Purchase Date and the
time of delivery of the Security.

          Notwithstanding anything herein to the contrary, any Holder delivering
to the Paying Agent the Purchase Notice contemplated by this Section 3.8(a)
shall have the right to withdraw such Purchase Notice at any time prior to the
close of business on the Purchase Date by delivery of a written notice of
withdrawal to the Paying Agent in accordance with Section 3.10.

                                      -20-
<PAGE>
 
          The Paying Agent shall promptly notify the Company of the receipt by
it of any Purchase Notice or written notice of withdrawal thereof.

          SECTION 3.9  Purchase of Securities at Option of the Holder upon
Change in Control.  (a) If on or prior to March 15, 1998 there shall have
occurred a Change in Control, Securities shall be purchased by the Company, at
the option of the Holder thereof, at the purchase price specified in paragraph 6
of the Securities (the "Change in Control Purchase Price") together with accrued
but unpaid interest to the Change in Control Purchase Date, as of the date that
is 35 Business Days after the occurrence of the Change in Control (the "Change
in Control Purchase Date"), subject to satisfaction by or on behalf of the
Holder of the requirements set forth in Section 3.9(c).

          A "Change in Control" shall be deemed to have occurred at such time as
either of the following events shall occur:

          (i)  There shall be consummated any consolidation or merger of the
     Company (A) in which the Company is not the continuing or surviving
     corporation or (B) pursuant to which the Common Stock would be converted
     into cash, securities or other property, in each case, other than a
     consolidation or merger of the Company in which the holders of the Common
     Stock immediately prior to the consolidation or merger have, directly or
     indirectly, at least a majority of the common equity of the continuing or
     surviving corporation immediately after such consolidation or merger; or

          (ii)  There is a report filed on Schedule 13D or 14D-1 (or any
     successor schedule, form or report) pursuant to the Securities Exchange Act
     of 1934, as amended (the "Exchange Act"), disclosing that any person (for
     the purposes of this Section 3.9 only, as the term "person" is used in
     Section 13(d)(3) or Section 14(d)(2) of the Exchange Act) has become the
     beneficial owner (as the term "beneficial owner" is defined under Rule 13d-
     3 or any successor rule or regulation promulgated under the Exchange Act)
     of 50% or more of the voting power of the Common Stock then outstanding;
     provided, however, that a person 

                                      -21-
<PAGE>
 
     shall not be deemed beneficial owner of, or to own beneficially, (A) any
     securities tendered pursuant to a tender or exchange offer made by or on
     behalf of such person or any of such person's Affiliates or Associates
     until such tendered securities are accepted for purchase or exchange
     thereunder, or (B) any securities if such beneficial ownership (1) arises
     solely as a result of a revocable proxy delivered in response to a proxy or
     consent solicitation made pursuant to the applicable rules and regulations
     under the Exchange Act, and (2) is not also then reportable on Schedule 13D
     (or any successor schedule) under the Exchange Act.

Notwithstanding the foregoing provisions of this Section 3.9, a Change in
Control shall not be deemed to have occurred by virtue of the Company, any
Subsidiary, any employee stock ownership plan or any other employee benefit plan
of the Company or any Subsidiary, or any person holding Common Stock for or
pursuant to the terms of any such employee benefit plan, filing or becoming
obligated to file a report under or in response to Schedule 13D or Schedule 14D-
1 (or any successor schedule, form or report) under the Exchange Act disclosing
beneficial ownership by it of Common Stock, whether in excess of 50% or
otherwise.

          "Associate" shall have the meaning ascribed to such term in Rule 12b-2
of the General Rules and Regulations under the Exchange Act, as in effect on the
date hereof.

          (b)  Within 15 Business Days after the occurrence of a Change in
     Control, the Company shall mail a written notice of Change in Control by
     first-class mail to the Trustee and to each Holder (and to beneficial
     owners as required by applicable law) and shall cause a copy of such notice
     to be published once in a daily newspaper of national circulation. The
     notice shall include a form of Change in Control Purchase Notice to be
     completed by the Securityholder and shall state:

               (1)  briefly, the events causing a Change in Control and the date
     of such Change in Control;

                                      -22-
<PAGE>
 
               (2)  the date by which the Change in Control Purchase Notice
     pursuant to this Section 3.9 must be given;

               (3)  the Change in Control Purchase Date;

               (4)  the Change in Control Purchase Price plus the amount of
     accrued but unpaid interest payable by the Company;

               (5)  the name and address of the Paying Agent and the Conversion
     Agent;

               (6)  the Conversion Rate and any adjustments thereto;

               (7)  that Securities as to which a Change in Control Purchase
     Notice has been given may be converted pursuant to Article XI hereof only
     if the Change in Control Purchase Notice has been withdrawn in accordance
     with the terms of this Indenture;

               (8)  that Securities must be surrendered to the Paying Agent to
     collect payment;

               (9)  that the Change in Control Purchase Price plus accrued but
     unpaid interest for any Security as to which a Change in Control Purchase
     Notice has been duly given and not withdrawn will be paid promptly
     following the later of the Change in Control Purchase Date and the time of
     surrender of such Security as described in (8);

               (10)  briefly, the procedures the Holder must follow to exercise
     rights under this Section 3.9;

               (11)  briefly, the conversion rights of the Securities; and

               (12)  the procedures for withdrawing a Change in Control Purchase
     Notice.

          (c)  A Holder may exercise its rights specified in Section 3.9(a) upon
     delivery of a written notice of purchase (a "Change in Control Purchase
     Notice") to the Paying Agent at any time prior to the close 

                                      -23-
<PAGE>
 
     of business on the Change in Control Purchase Date, stating:

               (1)  the certificate number of the Security which the Holder will
     deliver to be purchased;

               (2)  the portion of the Principal Amount at Maturity of the
     Security which the Holder will deliver to be purchased, which portion must
     be $1,000 or an integral multiple thereof; and

               (3)  that such Security shall be purchased pursuant to the terms
     and conditions specified in paragraph 6 of the Securities.

          The delivery of such Security to the Paying Agent prior to, on or
after the Change in Control Purchase Date (together with all necessary
endorsements) at the offices of the Paying Agent shall be a condition to the
receipt by the Holder of the Change in Control Purchase Price plus accrued but
unpaid interest therefor; provided, however, that such Change in Control
Purchase Price plus accrued but unpaid interest shall be so paid pursuant to
this Section 3.9 only if the Security so delivered to the Paying Agent shall
conform in all respects to the description thereof set forth in the related
Change in Control Purchase Notice.

          The Company shall purchase from the Holder thereof, pursuant to this
Section 3.9, a portion of a Security if the Principal Amount at Maturity of such
portion is $1,000 or an integral multiple of $1,000.   Provisions of this
Indenture that apply to the purchase of all of a Security also apply to the
purchase of such portion of such Security.

          Any purchase by the Company contemplated pursuant to the provisions of
this Section 3.9 shall be consummated by the delivery of the consideration to be
received by the Holder promptly following the later of the Change in Control
Purchase Date and the time of delivery of the Security to the Paying Agent in
accordance with this Section 3.9.

          Notwithstanding anything herein to the contrary, any Holder delivering
to the Paying Agent the Change in Control Purchase Notice contemplated by this

                                      -24-
<PAGE>
 
Section 3.9(c) shall have the right to withdraw such Change in Control Purchase
Notice at any time prior to the close of business on the Change in Control
Purchase Date by delivery of a written notice of withdrawal to the Paying Agent
in accordance with Section 3.10.

          The Paying Agent shall promptly notify the Company of the receipt by
it of any Change in Control Purchase Notice or written withdrawal thereof.

          SECTION 3.10  Effect of Purchase Notice or Change in Control Purchase
Notice.  Upon receipt by the Paying Agent of the Purchase Notice or Change in
Control Purchase Notice specified in Section 3.8 or Section 3.9(c), as
applicable, the Holder of the Security in respect of which such Purchase Notice
or Change in Control Purchase Notice, as the case may be, was given shall
(unless such Purchase Notice or Change in Control Purchase Notice is withdrawn
as specified in the following two paragraphs) thereafter be entitled to receive
solely the Purchase Price or Change in Control Purchase Price plus accrued but
unpaid interest to the Purchase Date or Change in Control Purchase Date, as the
case may be, with respect to such Security.  Securities in respect of which a
Purchase Notice or Change in Control Purchase Notice, as the case may be, has
been given by the Holder thereof may not be converted pursuant to Article XI
hereof on or after the date of the delivery of such Purchase Notice or Change in
Control Purchase Notice, as the case may be, unless such Purchase Notice or
Change in Control Purchase Notice, as the case may be, has first been validly
withdrawn as specified in the following two paragraphs.

          A Purchase Notice or Change in Control Purchase Notice, as the case
may be, may be withdrawn by means of a written notice of withdrawal delivered to
the office of the Paying Agent in accordance with the Purchase Notice or Change
in Control Purchase Notice, as the case may be, at any time prior to the close
of business on the Purchase Date or the Change in Control Purchase Date, as the
case may be, specifying:

               (1)  the certificate number of the Security in respect of which
     such notice of withdrawal is being submitted,

                                      -25-
<PAGE>
 
               (2)  the Principal Amount at Maturity of the Security in respect
     of which such notice of withdrawal is being submitted, and

               (3)  the Principal Amount at Maturity, if any, of such Security
     which remains subject to the original Purchase Notice or Change in Control
     Purchase Notice, as the case may be, and which has been or will be
     delivered for purchase by the Company.

          There shall be no purchase of any Securities pursuant to Section 3.8
or 3.9 if there has occurred (prior to, on or after, as the case may be, the
giving, by the Holders of such Securities, of the required Purchase Notice or
Change in Control Purchase Notice, as the case may be) and is continuing an
Event of Default (other than a default in the payment of the Purchase Price or
Change in Control Purchase Price, as the case may be, plus accrued but unpaid
interest with respect to such Securities). The Paying Agent will promptly return
to the respective Holders thereof any Securities (x) with respect to which a 
Purchase Notice or Change in Control Purchase Notice, as the case may be, has 
been withdrawn in compliance with this Indenture, or (y) held by it during the 
continuance of an Event of Default (other than a default in the payment of the 
Purchase Price or Change in Control Purchase Price, as the case may be, with 
respect to such Securities) in which case, upon such return, the Purchase Notice
or Change in Control Purchase Notice with respect thereto shall be deemed to 
have been withdrawn.

          SECTION 3.11  Deposit of Purchase Price or Change in Control Purchase
Price.  On or before the Business Day following the Purchase Date or the Change
in Control Purchase Date, as the case may be, the Company shall deposit with the
Trustee or with the Paying Agent (or, if the Company or a Subsidiary or an
Affiliate of either of them is acting as the Paying Agent, shall segregate and
hold in trust as provided in Section 2.4) an amount of money (in immediately
available funds if deposited on such Business Day) sufficient to pay the
aggregate Purchase Price or Change in Control Purchase Price, as the case may
be, plus accrued but unpaid interest to the Purchase Date or Change in Control
Purchase Date of all the Securities or portions thereof which are to be
purchased as of the Purchase Date or Change in Control Purchase Date, as the
case may be.

          SECTION 3.12  Securities Purchased in Part.   Any Security which is to
be purchased only in part shall be surrendered at the office of the Paying Agent
(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 such Holder's attorney duly
authorized in writing) and the Company shall execute and the Trustee shall
authenticate and deliver to the Holder 

                                      -26-
<PAGE>
 
of such Security, without service charge, a new Security or Securities, of any
authorized denomination as requested by such Holder in aggregate Principal
Amount at Maturity equal to, and in exchange for, the portion of the Principal
Amount at Maturity of the Security so surrendered which is not purchased.

          SECTION 3.13  Covenant to Comply with Securities Laws upon Purchase of
Securities.  In connection with any offer to purchase or purchase of Securities
under Section 3.8 or 3.9 hereof (provided that such offer or purchase
constitutes an "issuer tender offer" for purposes of Rule 13e-4 (which term, as
used herein, includes any successor provision thereto) under the Exchange Act at
the time of such offer or purchase), the Company shall (i) comply with Rule 13e-
4 and Rule 14e-1 under the Exchange Act, (ii) file the related Schedule 13E-4
(or any successor schedule, form or report) under the Exchange Act, and (iii)
otherwise comply with all Federal and state securities laws so as to permit the
rights and obligations under Sections 3.8 and 3.9 to be exercised in the time
and in the manner specified in Sections 3.8 and 3.9.

          SECTION 3.14  Repayment to the Company.  The Trustee and the Paying
Agent shall return to the Company any cash that remains unclaimed as provided in
paragraph 13 of the Securities, together with interest thereon, held by them for
the payment of the Redemption Price, Purchase Price or Change in Control
Purchase Price, as the case may be, plus accrued but unpaid interest; provided,
however, that to the extent that the aggregate amount of cash deposited by the
Company pursuant to Section 3.5 or Section 3.11 exceeds the aggregate Redemption
Price, Purchase Price or Change in Control Purchase Price, as the case may be,
plus accrued but unpaid interest of the Securities or portions thereof which the
Company is obligated to purchase as of the Redemption Date, Purchase Date or
Change in Control Purchase Date, as the case may be, then promptly after the
Business Day following the Redemption Date, Purchase Date or Change in Control
Purchase Date, as the case may be, the Trustee and the Paying Agent shall return
any such excess to the Company together with interest thereon.

                                      -27-
<PAGE>
 
                                   ARTICLE IV

                                   COVENANTS

          SECTION 4.1  Payment of Securities.  The Company shall promptly make
all payments in respect of the Securities on the dates and in the manner
provided in the Securities or pursuant to this Indenture.  Principal Amount at
Maturity, Stated Issue Price plus accrued Stated Discount, Redemption Price,
Purchase Price, Change in Control Purchase Price, cash in respect of a
conversion in accordance with Article XI and interest shall be considered paid
on the applicable date due if on such date (or, in the case of a Purchase Price
or Change in Control Purchase Price plus accrued but unpaid interest to the
Purchase Date or Change in Control Purchase Date, on the Business Day following
the applicable Purchase Date or Change in Control Purchase Date, as the case may
be) the Trustee or the Paying Agent holds, in accordance with this Indenture,
money sufficient to pay all such amounts then due.

          The Company shall, to the extent permitted by law, pay interest on
overdue amounts at the rate per annum set forth in paragraph 1 of the
Securities, compounded semiannually, which interest shall accrue from the date
such overdue amount was originally due to the date payment of such amount,
including interest thereon, has been made or duly provided for.  All such
interest shall be payable on demand.

          SECTION 4.2  SEC and Other Reports.  The Company shall file with the
Trustee, within 15 days after it files such with the SEC, copies of its annual
report and of the information, documents and other reports (or copies of such
portions of any of the foregoing as the SEC may by rules and regulations
prescribe) which the Company is required to file with the SEC pursuant to
Section 13 or 15(d) of the Exchange Act.  In the event the Company is at any
time no longer subject to the reporting requirements of Section 13 or 15(d) of
the Exchange Act, it shall continue to provide the Trustee with reports
containing substantially the same information as would have been required to be
filed with the SEC had the Company continued to have been subject to such
reporting requirements. In such event, such reports shall be provided at the
times the Company would have 

                                      -28-
<PAGE>
 
been required to provide reports had it continued to have been subject to such
reporting requirements. The Company also shall comply with the other provisions
of TIA Section 314(a).

          SECTION 4.3  Compliance Certificate.  The Company shall deliver to the
Trustee within 120 days after the end of each fiscal year of the Company
(beginning with the fiscal year ending on December 31, 1995) an Officers'
Certificate stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions, covenants or conditions of this Indenture (without regard to any
period of grace or requirement of notice provided hereunder) and if the Company
shall be in default, specifying all such defaults and the nature and status
thereof of which they may have knowledge.

          SECTION 4.4  Further Instruments and Acts.  Upon request of the
Trustee, the Company will execute and deliver such further instruments and do
such further acts as may be reasonably necessary or proper to carry out more
effectively the purposes of this Indenture.

          SECTION 4.5  Maintenance of Office or Agency.   The Company will
maintain in the Borough of Manhattan, the City of New York, an office or agency
of the Trustee, Registrar, Paying Agent and Conversion Agent where Securities
may be presented or surrendered for payment, where Securities may be surrendered
for registration of transfer, exchange, purchase, redemption or conversion and
where notices and demands to or upon the Company in respect of the Securities
and this Indenture may be served.  The office of the Trustee, at Midwest 
Clearing Corporation, 40 Broad Street, 22nd Floor, New York, New York 10004,
shall initially be such office or agency for all of the aforesaid purposes.  The
Company shall give prompt written notice to the Trustee of the location, and of
any change in the location, of any such office or agency (other than a change in
the location of the office of the Trustee).  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 address of the Trustee set forth in Section
12.2.

                                      -29-
<PAGE>
 
          The Company may also from time to time designate one or more other
offices or agencies where the Securities 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 the
Borough of Manhattan, the City of New York, for such purposes.

          The Company shall furnish to the Trustee on or before December 15 of
each year during which the Securities are outstanding, such information as may
be requested by the Trustee in order that the Trustee may prepare the
information which is required to be reported for such year on Internal Revenue
Service Forms 1096 and 1099 pursuant to section 6049 of the Internal Revenue
Code of 1986, as amended.  Such information shall include and the Company shall
provide the amount of Original Issue Discount includable in income for each
$1,000 of Principal Amount at Maturity of the Securities for the year in which
such information is required to be furnished to the Trustee.


                                   ARTICLE V

                             SUCCESSOR CORPORATION

          SECTION 5.1  When Company May Merge or Transfer Assets.  The Company
shall not consolidate with or merge with or into any other person or convey,
transfer or lease all or substantially all of its properties and assets to any
person, unless:

          (a)  either (1) the Company shall be the continuing corporation or (2)
     the person (if other than the Company) formed by such consolidation or into
     which the Company is merged or the person which acquires by conveyance,
     transfer or lease all or substantially all of the properties and assets of
     the Company (i) shall be a corporation, partnership or trust organized and
     validly existing under the laws of the United States or any State thereof
     or the District of Columbia and (ii) shall expressly assume, by an
     indenture supplemental hereto, executed and delivered to the Trustee, in
     form satis-

                                      -30-
<PAGE>
 
     factory to the Trustee, all of the obligations of the Company under the 
     Securities and this Indenture;

          (b)  immediately after giving effect to such transaction, no Default
     shall have occurred and be continuing; and

          (c)  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 V and that all conditions
     precedent herein provided for relating to such transaction have been
     satisfied.

          For purposes of the foregoing, the transfer (by lease, assignment,
sale or otherwise) of all or substantially all of the properties and assets of
one or more Subsidiaries (other than to the Company or another Subsidiary),
which, if such properties and assets were owned by the Company, would constitute
a transfer of all or substantially all of the properties and assets of the
Company, shall be deemed to be the transfer of all or substantially all of the
properties and assets of the Company.

          The successor person formed by such consolidation or into which the
Company is merged or the successor person 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 had been named as the Company herein; and thereafter, except in
the case of a lease and obligations the Company may have under a supplemental
indenture pursuant to Section 11.14, the Company shall be discharged from all
obligations and covenants under this Indenture and the Securities.  Subject to
Section 9.6, the Company, the Trustee and the successor person shall enter into
a supplemental indenture to evidence the succession and substitution of such
successor person and such discharge and release of the Company.

                                      -31-
<PAGE>
 
                                   ARTICLE VI

                             DEFAULTS AND REMEDIES

          SECTION 6.1  Events of Default.  An "Event of Default" occurs if:

               (1)  the Company defaults in the payment of interest, the
     Principal Amount at Maturity, Redemption Price, Purchase Price or Change in
     Control Purchase Price on any Security or in the payment of cash or
     delivery of Common Stock in respect of conversions in accordance with
     Article XI when the same becomes due and payable at its Stated Maturity,
     upon redemption, upon declaration, when due for purchase by the Company or
     otherwise, whether or not such payment shall be prohibited by Article X;

               (2)  the Company fails to comply with any of its agreements in
     the Securities or this Indenture (other than those referred to in clause
     (1) above) and such failure continues for 60 days after receipt by the
     Company of a Notice of Default;

               (3)  the Company pursuant to or under or within the meaning of
     any Bankruptcy Law:

               (A)  commences a voluntary case or proceeding;

               (B)  consents to the entry of an order for relief against it in
          an involuntary case or proceeding or the commencement of any case
          against it;

               (C)  consents to the appointment of a Custodian of it or for any
          substantial part of its property;

               (D)  makes a general assignment for the benefit of its creditors;

               (E)  files a petition in bankruptcy or answer or consent seeking
          reorganization or relief; or

                                      -32-
<PAGE>
 
               (F)  consents to the filing of such petition or the appointment
          of or taking possession by a Custodian; or

               (4)  a court of competent jurisdiction enters an order or decree
     under any Bankruptcy Law that:

               (A)  is for relief against the Company in an involuntary case or
          proceeding, or adjudicates the Company insolvent or bankrupt;

               (B)  appoints a Custodian of the Company or for any substantial
          part of its property; or

               (C)  orders the winding up or liquidation of the Company;

     and the order or decree remains unstayed and in effect for 60 days.

          "Bankruptcy Law" means Title 11, United States Code, or any similar
Federal or state law for the relief of debtors.

          "Custodian" means any receiver, trustee, assignee, liquidator,
custodian or similar official under any Bankruptcy Law.

          A Default under clause (2) above is not an Event of Default until the
Trustee notifies the Company, or the Holders of at least 25% in aggregate
Principal Amount at Maturity of the Securities at the time outstanding notify
the Company and the Trustee, of the Default and the Company does not cure such
Default (and such Default is not waived) within the time specified in clause (2)
above after actual receipt of such notice.  Any such notice must specify the
Default, demand that it be remedied and state that such notice is a "Notice of
Default."

          The Company shall deliver to the Trustee, within 30 days after it
becomes aware of the occurrence thereof, written notice of any event which with
the giving of notice or the lapse of time, or both, would become an Event of
Default under clause (2) above, its

                                      -33-
<PAGE>
 
status and what action the Company is taking or proposes to take with
respect thereto.

          SECTION 6.2  Acceleration.  If an Event of Default (other than an
Event of Default specified in Section 6.1(3) or (4)) occurs and is continuing,
the Trustee by notice to the Company, or the Holders of at least 25% in
aggregate Principal Amount at Maturity of the Securities at the time outstanding
by notice to the Company and the Trustee, may declare the Stated Issue Price
plus accrued but unpaid interest and accrued Stated Discount to the date of
declaration on all the Securities to be immediately due and payable.  Upon such
a declaration, such Stated Issue Price plus accrued but unpaid interest and
accrued Stated Discount shall be due and payable immediately.  If an Event of
Default specified in Section 6.1(3) or (4) occurs and is continuing, the Stated
Issue Price plus accrued but unpaid interest and accrued Stated Discount on all
the Securities shall become and be immediately due and payable without any
declaration or other act on the part of the Trustee or any Securityholders.  The
Holders of a majority in aggregate Principal Amount at Maturity of the
Securities at the time outstanding, by notice to the Trustee (and without notice
to any other Securityholder) may rescind an acceleration and its consequences if
the rescission would not conflict with any judgment or decree and if all
existing Events of Default have been cured or waived except nonpayment of the
Stated Issue Price plus accrued but unpaid interest and accrued Stated Discount
that have become due solely as a result of acceleration and if all amounts due
to the Trustee under Section 7.7 have been paid.  No such rescission shall
affect any subsequent Default or impair any right consequent thereto.

          SECTION 6.3  Other Remedies.  If an Event of Default occurs and is
continuing, the Trustee may pursue any available remedy to collect the payment
of the Stated Issue Price plus accrued but unpaid interest and accrued Stated
Discount on the Securities or to enforce the performance of any provision of the
Securities or this Indenture.

          The Trustee may maintain a proceeding even if the Trustee does not
possess any of the Securities or does not produce any of the Securities in the
proceeding.  A delay or omission by the Trustee or any Securityholder 

                                      -34-
<PAGE>
 
in exercising any right or remedy accruing upon an Event of Default shall not
impair the right or remedy or constitute a waiver of, or acquiescence in, the
Event of Default. No remedy is exclusive of any other remedy. All available
remedies are cumulative.

          SECTION 6.4  Waiver of Past Defaults.  The Holders of a majority in
aggregate Principal Amount at Maturity of the Securities at the time
outstanding, by notice to the Trustee (and without notice to any other
Securityholder), may waive an existing Default and its consequences except (1)
an Event of Default described in Section 6.1(1), (2) a Default in respect of a
provision that under Section 9.2 cannot be amended without the consent of each
Securityholder affected or (3) a Default which constitutes a failure to convert
any Security in accordance with the terms of Article XI.  When a Default is
waived, it is deemed cured, but no such waiver shall extend to any subsequent or
other Default or impair any consequent right.  This Section 6.4 shall be in lieu
of Section 316(a)1(B) of the TIA, and such Section 316(a)1(B) is hereby
expressly excluded from this Indenture, as permitted by the TIA.

          SECTION 6.5  Control by Majority.  The Holders of a majority in
aggregate Principal Amount at Maturity of the Securities at the time outstanding
may direct the time, method and place of conducting any proceeding for any
remedy available to the Trustee or of exercising any trust or power conferred on
the Trustee.  However, the Trustee may refuse to follow any direction that
conflicts with law or this Indenture or that the Trustee determines in good
faith is unduly prejudicial to the rights of other Securityholders or would
involve the Trustee in personal liability.  The Trustee shall be entitled to 
indemnification satisfactory to it against losses or expenses caused by the 
taking of such action.  This Section 6.5 shall be in lieu of Section 316(a)1(A)
of the TIA, and such Section 316(a)1(A) is hereby expressly excluded from this 
Indenture, as permitted by the TIA.

          SECTION 6.6  Limitation on Suits.  A Securityholder may not pursue any
remedy with respect to this Indenture or the Securities unless:

               (1)  the Holder gives to the Trustee written notice stating that
     an Event of Default is continuing;

                                      -35-
<PAGE>
 
               (2)  the Holders of at least 25% in aggregate Principal Amount at
     Maturity of the Securities at the time outstanding make a written request
     to the Trustee to pursue the remedy;

               (3)  such Holder or Holders offer to the Trustee reasonable
     security or indemnity satisfactory to the Trustee against any loss,
     liability or expense;

               (4)  the Trustee does not comply with the request within 60 days
     after receipt of such notice, request and offer of security or indemnity;
     and

               (5)  the Holders of a majority in aggregate Principal Amount at
     Maturity of the Securities at the time outstanding do not give the Trustee
     a direction inconsistent with the request during such 60-day period.

          A Securityholder may not use this Indenture to prejudice the rights of
any other Securityholder or to obtain a preference or priority over any other
Securityholder.

          SECTION 6.7  Rights of Holders to Receive Payment.  Notwithstanding
any other provision of this Indenture, but subject to Article X, the right of
any Holder to receive payment of the Principal Amount at Maturity, Stated Issue
Price plus accrued Stated Discount, cash in respect of a conversion in
accordance with Article XI, Redemption Price, Purchase Price, Change in Control
Purchase Price or accrued interest in respect of the Securities held by such
Holder, on or after the respective due dates expressed in the Securities or any
Redemption Date, and to convert the Securities in accordance with Article XI, or
to bring suit for the enforcement of any such payment on or after such
respective dates or the right to convert, shall not be impaired or affected
adversely without the consent of such Holder.

          SECTION 6.8  Collection Suit by Trustee.  If an Event of Default
described in Section 6.1(1) occurs and is continuing, the Trustee may recover
judgment in its own name and as trustee of an express trust against the Company
for the whole amount owing with respect to the Securities and the amounts
provided for in Section 7.7.

                                      -36-
<PAGE>
 
          SECTION 6.9  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 Amount at Maturity, Stated Issue
Price plus accrued Stated Discount, Redemption Price, Purchase Price, Change in
Control Purchase Price or accrued interest in respect 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 any such amount) shall be entitled and empowered, by
intervention in such proceeding or otherwise,

          (a)  to file and prove a claim for the whole amount of the Principal
     Amount at Maturity, Stated Issue Price plus accrued Stated Discount,
     Redemption Price, Purchase Price, Change in Control Purchase Price, or
     accrued but unpaid interest 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 or any
     other amounts due the Trustee under Section 7.7) and of the Holders allowed
     in such judicial proceeding, and

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

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
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 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 7.7.

          Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or 

                                      -37-
<PAGE>
 
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 the Trustee to vote in respect of the claim of any
Holder in any such proceeding.

          SECTION 6.10  Priorities.  If the Trustee collects any money pursuant
to this Article VI, it shall pay out the money in the following order:

          FIRST: to the Trustee for amounts due under Section 7.7;

          SECOND: to holders of Senior Indebtedness to the extent required by
     Article X;

          THIRD: to Securityholders for amounts due and unpaid on the Securities
     for the Principal Amount at Maturity, Stated Issue Price plus accrued
     Stated Discount, Redemption Price, Purchase Price, Change in Control
     Purchase Price or accrued but unpaid interest, as the case may be, ratably,
     without preference or priority of any kind, according to such amounts due
     and payable on the Securities; and

          FOURTH: the balance, if any, to the Company.

          The Trustee may fix a record date and payment date for any payment to
Securityholders pursuant to this Section 6.10.  At least 15 days before such
record date, the Trustee shall mail to each Securityholder and the Company a
notice that states the record date, the payment date and the amount to be paid.

          SECTION 6.11  Undertaking for Costs.  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, a court in its discretion may
require the filing by any party litigant (other than the Trustee) in the suit of
an undertaking to pay the costs of the suit, and the court in its discretion may
assess reasonable costs, including reasonable attorneys' fees, against any party
litigant in the suit, having due regard to the merits and good faith of the
claims or defenses made by the party litigant. This Section 6.11 does not apply
to a suit by the Trustee, a suit by a Holder pursuant to Section 6.7 or a suit
by 

                                      -38-
<PAGE>
 
Holders of more than 10% in aggregate Principal Amount at Maturity of the
Securities at the time outstanding. This Section 6.11 shall be in lieu of
Section 315(e) of the TIA, and such Section 315(e) is hereby expressly excluded
from this Indenture, as permitted by the TIA.

          SECTION 6.12  Waiver of Stay, Extension or Usury 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 or any usury or other law
wherever enacted, now or at any time hereafter in force, which would prohibit or
forgive the Company from paying all or any portion of the interest, the
Principal Amount at Maturity, Stated Issue Price plus accrued interest and
Stated Discount, Redemption Price, Purchase Price or Change in Control Purchase
Price in respect of Securities, or any interest on such amounts, as contemplated
herein, or 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.


                                  ARTICLE VII

                                    TRUSTEE

          SECTION 7.1  Duties of Trustee.  (a) If an Event of Default has
occurred and is continuing, the Trustee shall exercise the rights and powers
vested in it by this Indenture and use the same degree of care and skill in its
exercise as a prudent man would exercise or use under the circumstances in the
conduct of his own affairs.

          (b)  Except during the continuance of an Event of Default:

          (1)  the Trustee need perform only those duties that are specifically
     set forth in this Indenture and no others; and

                                      -39-
<PAGE>
 
               (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.  However,
     the Trustee shall examine the certificates and opinions to determine
     whether or not they conform to the requirements of this Indenture.

This Section 7.1(b) shall be in lieu of Section 315(a) of the TIA, and such
Section 315(a) is hereby expressly excluded from this Indenture, as permitted by
the TIA.

          (c)  The Trustee may not be relieved from liability for its own
     negligent action, its own negligent failure to act or its own willful
     misconduct, except that:

               (1)  this paragraph (c) does not limit the effect of paragraph
     (b) of this Section 7.1;

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

               (3)  the Trustee shall not be liable with respect to any action
     it takes or omits to take in good faith in accordance with a direction
     received by it pursuant to Section 6.5.

Subparagraphs (c)(1), (2) and (3) shall be in lieu of Sections 315(d)(1),
315(d)(2) and 315(d)(3) of the TIA, and such Sections 315(d)(1), 315(d)(2) and
315(d)(3) are hereby expressly excluded from this Indenture, as permitted by the
TIA.

          (d)  Every provision of this Indenture that in any way relates to the
     Trustee shall be subject to the provisions of this Section 7.1.

          (e)  The Trustee may refuse to perform any duty or exercise any right
     or power or extend or risk its own funds or otherwise incur any financial
     liability 
     

                                      -40-
<PAGE>
 
     unless it receives indemnity satisfactory to it against any loss, liability
     or expense.

          (f)  Money held by the Trustee in trust hereunder need not be 
     segregated from other funds except to the extent required by law.

          (g)  No provision of this Indenture shall require the Trustee to 
     determine the maximum interest rate permissible under applicable law.

          SECTION 7.2  Rights of Trustee.  Subject to its duties and
responsibilities under the TIA,

          (a)  The Trustee may rely and shall be protected in acting or 
     refraining from acting upon any resolution, certificate, statement,
     opinion, report, notice, request, direction, consent, order, bond,
     debenture, note, other evidence of indebtedness or other paper or document
     (individually a "Document" and collectively "Documents") believed by it to
     be genuine and to have been signed or presented by the proper person. The
     Trustee need not investigate any fact or matter stated in any of the
     Documents.

          (b)  Before the Trustee acts or refrains from acting, it may require
     an Officers' Certificate or an Opinion of Counsel.  The Trustee shall not
     be liable for any action it takes or omits to take in good faith in
     reliance on such Officers' Certificate or Opinion of Counsel.

          (c)  The Trustee may act through agents and shall not be responsible
     for the misconduct or negligence of any agent appointed with due care.

          (d)  The Trustee shall not be liable for any action it takes or omits
     to take in good faith which it believes to be authorized or within its
     rights or powers.

          (e)  The Trustee may consult with counsel selected by it and any 
     advice or Opinion of Counsel shall be full and complete authorization and
     protection in respect of any action taken or suffered or omitted by it
     hereunder in good faith and in accordance with such advice or Opinion of
     Counsel.

          (f)  The Trustee shall be under no obligation to exercise any of the 
     rights or powers vested in it by this Indenture at the request, order or 
     direction of any of the Holders, pursuant to the provisions of this 
     Indenture, unless such Holders shall have offered to the Trustee reasonable
     security or indemnity against the costs, expenses and liabilities which may
     be incurred therein or thereby.

          SECTION 7.3  Individual Rights of Trustee.  The Trustee in its
individual or any other capacity may become the owner or pledgee of Securities
and may otherwise deal with the Company or its Affiliates with the same rights
it would have if it were not Trustee.  Any Paying Agent, Registrar, Conversion
Agent or co-registrar may do the same with like rights.  However, the Trustee
must comply with Sections 7.10 and 7.11.

          SECTION 7.4 Trustee's Disclaimer. The Trustee makes no representation
as to the validity or adequacy of this Indenture or the Securities. The Trustee
shall not be responsible for any statement in the registration statement or
prospectus for the Securities under the Securities Act of 1933, as amended (the
"Securities Act") (other than statements contained in Form T-1 filed with the
SEC under the TIA and any statements provided by the Trustee for use in such
registration statement) or in the Indenture or the Securities (other than its
certificate 

                                      -41-
<PAGE>
 
of authentication), or the determination as to which beneficial owners are
entitled to receive any notices hereunder.

          SECTION 7.5 Notice of Defaults. If a Default occurs and if it is known
to the Trustee, the Trustee shall give to each Securityholder notice of the
Default within 90 days after it occurs unless such Default shall have been cured
or waived before the giving of such notice. Except in the case of a Default
described in Section 6.1(1), the Trustee may withhold the notice if and so long
as a committee of its Responsible Officers in good faith determines that
withholding the notice is in the interests of Securityholders. The second
sentence of this Section 7.5 shall be in lieu of the proviso to Section 315(b)
of the TIA, and such proviso is hereby expressly excluded from this Indenture,
as permitted by the TIA.

          The Trustee shall not be deemed to have knowledge of any Default or 
Event of Default except (i) an Event of Default described in Section 6.1(1) so 
long as the Trustee is Paying Agent for the Securities or (ii) any Default or 
Event of Default of which the Trustee shall have received written notification 
or a Responsible Officer charged with the administration of the Indenture shall 
have obtained actual knowledge, and such notification shall not be deemed to 
include receipt of information obtained in any report or other documents 
furnished under Section 4.2 of this Indenture, which reports and documents the 
Trustee shall have no duty to examine.

          SECTION 7.6 Reports by Trustee to Holders. Within 60 days after each
May 15 beginning with the May 15 following the date of this Indenture, the
Trustee shall mail to each Securityholder a brief report dated as of such May 15
that complies with TIA Section 313(a), if required by such Section 313(a). The
Trustee also shall comply with TIA Section 313(b).

          A copy of each report at the time of its mailing to Securityholders
shall be filed with the SEC and each securities exchange on which the Securities
are listed. The Company agrees to notify the Trustee whenever the Securities
become listed on any securities exchange and of any delisting thereof.

          SECTION 7.7  Compensation and Indemnity.  The Company agrees:

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

          (b)  to reimburse the Trustee and each predecessor Trustee upon its 
     request for all reasonable expenses, disbursements and advances incurred 
     or made by or on behalf of the Trustee in accor-

                                      -42-
<PAGE>
 
     dance with any provision of this Indenture (excluding any and all counsel
     fees, but including the reasonable out-of-pocket expenses and
     disbursements of its counsel and all agents and other persons not regularly
     in its employ and the reasonable out-of-pocket expenses and disbursements
     of in-house counsel in the regular employ of the Trustee which are
     allocable to this trust), except any such expense, disbursement or advance
     as may be attributable to its negligence or bad faith; and

          (c)  to indemnify the Trustee and the officers, directors, employees 
and agents of the Trustee or any such predecessor Trustee (the Trustee, each 
predecessor Trustee and such officers, directors, employees and agents being 
hereinafter referred to in this Section collectively as the "Indemnified
Parties" and individually as an "Indemnified Party") for, and to hold each
Indemnified Party harmless against, any loss, damage, claim, liability, cost or
expense (including attorney's fees) incurred without negligence or bad faith on
such Indemnified Party's part, arising out of or in connection with the
acceptance or administration of this Indenture or the trust hereunder,
including the costs and expenses of defending itself against any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder.

          To secure the Company's payment obligations in this Section 7.7, the
Trustee shall have a lien prior to the Securities on all money or property held
or collected by the Trustee, except that held in trust to pay the Principal
Amount at Maturity, Stated Issue Price plus accrued Stated Discount, Redemption
Price, Purchase Price, Change in Control Purchase Price or accrued interest, if
any, as the case may be, on particular Securities.

          The Company's payment obligations pursuant to this Section 7.7 shall
survive the discharge of this Indenture.  When the Trustee incurs expenses after
the occurrence of a Default specified in Section 6.1(3) or (4), the expenses are
intended to constitute expenses of administration under any Bankruptcy Law.

          SECTION 7.8  Replacement of Trustee.  The Trustee may resign by so
notifying the Company; provided, however, no such resignation shall be effective
until a successor Trustee has accepted its appointment pursuant to this Section
7.8.  The Holders of a majority in aggregate Principal Amount at Maturity of the
Securities at the time outstanding may remove the Trustee by so notifying the
Trustee and the Company and may appoint a successor Trustee subject to the
consent of the Company, which consent shall not be unreasonably withheld. The
Company shall remove the Trustee if:

                                      -43-
<PAGE>
 
               (1)  the Trustee fails to comply with Section 7.10;

               (2)  the Trustee is adjudged bankrupt or insolvent;

               (3)  a receiver or public officer takes charge of the Trustee or
     its property; or

               (4)  the Trustee otherwise becomes incapable of acting.

          If the Trustee resigns or is removed or if a vacancy exists in the
office of Trustee for any reason, the Company shall promptly appoint, by
resolution of its Board of Directors, a successor Trustee.

          A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company satisfactory in form and
substance to the retiring Trustee and the Company.  Thereupon the resignation or
removal of the retiring Trustee shall become effective, and the successor
Trustee shall have all the rights, powers and duties of the Trustee under this
Indenture.  The successor Trustee shall mail a notice of its succession to
Securityholders.  The retiring Trustee shall promptly transfer all property held
by it as Trustee to the successor Trustee, subject to the lien provided for in
Section 7.7.

          If a successor Trustee does not take office within 30 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company or the
Holders of a majority in aggregate Principal Amount at Maturity of the
Securities at the time outstanding may petition any court of competent
jurisdiction for the appointment of a successor Trustee.

          If the Trustee fails to comply with Section 7.10, any Securityholder
may petition any court of competent jurisdiction for the removal of the Trustee
and the appointment of a successor Trustee.

          SECTION 7.9  Successor Trustee by Merger.  If the Trustee consolidates
with, merges or converts into, or transfers all or substantially all its
corporate trust business or assets to, another corporation, the result-

                                      -44-
<PAGE>
 
ing, surviving or transferee corporation without any further act shall be the
successor Trustee.

          SECTION 7.10  Eligibility; Disqualification.  The Trustee shall at all
times satisfy the requirements of TIA Sections 310(a)(1) and 310(b).  The
Trustee shall have a combined capital and surplus of at least $100,000,000 as
set forth in its most recent published annual report of condition.  Nothing
herein contained shall prevent the Trustee from filing with the Commission the
application referred to in the penultimate paragraph of TIA Section 310(b).

          SECTION 7.11  Preferential Collection of Claims Against Company.  The
Trustee shall comply with TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b).  A Trustee who has resigned or been
removed shall be subject to TIA Section 311(a) to the extent indicated therein.

          SECTION 7.12  Investment of Funds.  All funds acquired and held by the
Trustee hereunder on any day which are not to be paid as provided herein on such
day ("Available Funds"), including any income, interest, dividends or other
distributions with respect to any investment of funds ("Investment Return"),
shall be invested pursuant to the written instructions of the Company (or oral
instructions confirmed in writing on the same day) in Investment Securities (as
defined below).  For so long as no Event of Default hereunder has occurred and
is continuing, all Investment Return shall be paid to the Company or otherwise
applied as directed by the Company by written notice to the Trustee.  In the
event that on any day the Trustee is holding Available Funds and the Company has
failed to furnish written instructions as to payment or application or
investment of such funds in Investment Securities, the Trustee shall invest such
funds in an Investment Security which provides for the immediate availability of
the invested funds on a daily basis.  At any time when an Event of Default has
occurred and is continuing, the Trustee shall retain all Investment Return until
the earlier of such time as no Event of Default hereunder is continuing or the
Company's obligations under this Indenture are discharged as provided herein, at
which time all Investment Return shall be retained, invested, paid or applied as
the Company shall direct in writing. The Trustee shall incur no

                                      -45-
<PAGE>
 
liability for losses arising from any investments made pursuant to this Section.

          As used herein, the term "Investment Securities" shall mean:

          (i)  Obligations of the United States, its agencies, or United States
     government sponsored enterprises.

          (ii)  Obligations, the principal and interest of which are guaranteed
     by the United States or any one of its agencies.

          (iii)  Obligations of a state, a territory, or a possession of the
     United States, or any political subdivision of any of the foregoing or of
     the District of Columbia as described in Section 103(a) of the Internal
     Revenue Code of 1986, as amended.  These obligations must be graded in the
     highest three major grades as determined by at least one national rating
     service or be secured, as to payments of principal and interest, by a
     letter of credit provided by a financial institution or insurance provided
     by a bond insurance company which itself or its debt is rated in the
     highest three  major grades as determined by at least one national rating
     service.

          (iv)  Banker's acceptances, commercial accounts, certificates of
     deposit, or depository receipts issued by a bank, trust company, savings
     and loan association, savings bank, a credit union or other financial
     institution whose deposits are, as appropriate, insured by the Federal
     Deposit Insurance Corporation or the National Credit Union Administration
     or any successor entity.

          (v)  Commercial paper rated at the time of purchase not less than P-2
     by Moody's or A-2 by S & P or within the two highest classifications
     established by at least one national rating service, and which matures
     within 270 days after the date of issue.

          (vi)  Repurchase agreements against obligations itemized in paragraphs
     (i) and (ii) above, and 

                                      -46-
<PAGE>
 
     executed by a bank or trust company or by members of the association of
     primary dealers or other recognized dealers in United States government
     securities, the market value of which must be maintained at levels at least
     equal to the amounts advanced and which obligations must be held in the
     custody of the Trustee or the Trustee's agent.

          (vii)  Any fund or other pooling arrangement which exclusively
     purchases and holds the investments itemized in paragraphs (i) through (vi)
     above.

          (viii)  Investment agreements or guaranteed investment contracts with
     any financial institution (including insurance companies) which itself or
     whose debt is rated "AAA" (or its equivalent) by at least one national
     rating service.

          (ix)  Euro-dollar time deposits in a bank or branch in the United
     States owned by a bank domiciled outside the United States.  This type of
     investment must be in a bank with total assets of at least U.S.
     $45,000,000,000 and with a long-term debt rating of at least "A3" (or its
     equivalent) by at least one national rating service.


                                  ARTICLE VIII

                             DISCHARGE OF INDENTURE

          SECTION 8.1  Discharge of Liability on Securities.  When (i) the
Company delivers to the Trustee all outstanding Securities (other than
Securities replaced pursuant to Section 2.7) for cancellation or (ii) all
outstanding Securities have become due and payable or valid conversion notices
have been received by the Trustee with respect to all outstanding Securities and
the Company deposits with the Trustee cash or certificates for shares of Common
Stock sufficient to pay all amounts due and owing on all outstanding Securities
(other than Securities replaced pursuant to Section 2.7), and if in either case
the Company pays all other sums payable hereunder by the Company, then this
Indenture shall, subject to Section 7.7, cease to be of further effect. The
Trustee shall join in the execution of a document prepared by the Company
acknowledging satisfaction and 

                                      -47-
<PAGE>
 
discharge of this Indenture on demand of the Company accompanied by an Officers'
Certificate and Opinion of Counsel and at the cost and expense of the Company.

          SECTION 8.2 Repayment to the Company. The Trustee and the Paying Agent
shall return to the Company upon written request any money, together with
interest earned thereon, or securities, together with distributions thereon,
held by them for the payment of any amount with respect to the Securities that
remains unclaimed for two years, provided, however, that the Trustee or such
Paying Agent, before being required to make any such return, may at the expense
of the Company cause to be published once in a newspaper of general circulation
in the City of New York or mail to each Holder entitled to the money or
securities notice that such money or securities remains unclaimed and that,
after a date specified therein, which shall not be less than 30 days from the
date of such publication or mailing, any unclaimed money or securities then
remaining will be returned to the Company. After return to the Company, Holders
entitled to the money or securities must look to the Company for payment as
general creditors unless an applicable abandoned property law designates another
person, and the Trustee and the Paying Agent shall have no further liability to 
the Securityholders with respect to such money or securities for that period 
commencing after the return thereof.


                                   ARTICLE IX

                                   AMENDMENTS

          SECTION 9.1  Without Consent of Holders.  The Company and the Trustee
may amend this Indenture or the Securities without the consent of any
Securityholder:

               (1)  to cure any ambiguity, omission, defect or inconsistency,
     provided that such amendment does not adversely affect the rights of any
     Securityholder;

               (2)  to comply with Article V or Section 11.14;

               (3)  to provide for uncertificated Securities in addition to
     certificated Securities so long as such uncertificated Securities are in
     registered form for purposes of the Internal Revenue Code of 1986, as
     amended;

                                      -48-
<PAGE>
 
               (4)  to make any change that does not adversely affect the rights
     of any Securityholder; or

               (5)  to make any change to comply with the TIA, or any amendment
     thereto, or to comply with any requirement of the SEC in connection with
     the qualification of the Indenture under the TIA.

          SECTION 9.2  With Consent of Holders.  With the written consent of the
Holders of at least a majority in aggregate Principal Amount at Maturity of the
Securities at the time outstanding, the Company and the Trustee may amend this
Indenture or the Securities in any manner.  However, without the consent of each
Securityholder affected, an amendment to this Indenture or the Securities may
not:

               (1)  make any change to the Principal Amount at Maturity of
     Securities whose Holders must consent to an amendment;

               (2)  make any change in the manner or rate of accrual in
     connection with Stated Discount, reduce the rate of interest referred to in
     paragraph 1 of the Securities or extend the time for payment of Stated
     Discount or interest on any Security;

               (3)  reduce the Principal Amount at Maturity or the Stated Issue
     Price of or extend the Stated Maturity of any Security;

               (4)  reduce the Redemption Price, Purchase Price or Change in
     Control Purchase Price of any Security;

               (5)  make any Security payable in money or securities other than
     that stated in the Security;

               (6)  make any change in Article X that adversely affects the
     rights of any Securityholder;

               (7)  make any change in Section 6.4, Section 6.7 or this Section
     9.2, except to increase any percentage set forth therein;

                                      -49-
<PAGE>
 
               (8)  make any change that materially adversely affects the right
     to convert any Security; or

               (9)  make any change that materially adversely affects the right
     to require the Company to purchase the Securities in accordance with the
     terms thereof and this Indenture.

          It shall not be necessary for the consent of the Holders under this
Section 9.2 to approve the particular form of any proposed amendment, but it
shall be sufficient if such consent approves the substance thereof.

          An amendment under this Section 9.2 or Section 9.1 may not make any
change that adversely affects the rights under Article X of any holder of Senior
Indebtedness then outstanding unless the requisite holders of such Senior
Indebtedness consent to such change pursuant to the terms of such Senior
Indebtedness.

          After an amendment under this Section 9.2 becomes effective, the
Company shall mail to each Holder a notice briefly describing the amendment.

          SECTION 9.3  Compliance with Trust Indenture Act.  Every supplemental
indenture executed pursuant to this Article shall comply with the TIA.

          SECTION 9.4  Revocation and Effect of Consents, Waivers and Actions.
Until an amendment, waiver or other action by Holders becomes effective, a
consent thereto by a Holder of a Security hereunder is a continuing consent by
the Holder and every subsequent Holder of that Security or portion of the
Security that evidences the same obligation as the consenting Holder's Security,
even if notation of the consent, waiver or action is not made on the Security.
However, any such Holder or subsequent Holder may revoke the consent, waiver or
action as to such Holder's Security or portion of the Security if the Trustee
receives the notice of revocation before the date the amendment, waiver or
action becomes effective. After an amendment, waiver or action becomes
effective, it shall bind every Securityholder.

                                      -50-
<PAGE>
 
          SECTION 9.5  Notation on or Exchange of Securities.  Securities
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 so
modified as to conform, in the opinion of the Trustee and the Board of
Directors, 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.

          SECTION 9.6  Trustee to Sign Supplemental Indentures.  The Trustee
shall sign any supplemental indenture authorized pursuant to this Article IX if
the amendment contained therein does not adversely affect the rights, duties,
liabilities or immunities of the Trustee.  If it does, the Trustee may, but need
not, sign such supplemental indenture.  In signing such supplemental indenture
the Trustee shall be entitled to receive, and (subject to the provisions of
Section 7.1) shall be fully protected in relying upon, an Officers' Certificate
and an Opinion of Counsel stating that such amendment is authorized or permitted
by this Indenture.

          SECTION 9.7  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.


                                   ARTICLE X

                                 SUBORDINATION

          SECTION 10.1  Securities Subordinate to Senior Indebtedness.  The
Company covenants and agrees, and each Holder of a Security by such Holder's
acceptance thereof likewise covenants and agrees, that, to the extent and in the
manner hereinafter set forth in this Article X, the indebtedness represented by
the Securities and the payment of the Principal Amount at Maturity, Stated Issue
Price plus accrued Stated Discount, Redemption Price, 

                                      -51-
<PAGE>
 
Purchase Price, Change in Control Purchase Price, interest and cash in respect
of conversions in accordance with Article XI in respect of each and all of the
Securities are hereby expressly made subordinate and subject in right of payment
to the prior payment in full of all Senior Indebtedness.

          "Senior Indebtedness" means the principal of (and premium, if any) and
interest on (including interest accruing after the filing of a petition
initiating any proceeding pursuant to any Bankruptcy Law, but only to the extent
allowed or permitted to the holder of such Debt against the bankruptcy or other
insolvency estate of the Company in such proceeding) and fees, expenses,
reimbursement obligations, indemnity obligations and other amounts due on or in
connection with any Debt incurred, assumed or guaranteed by the Company, whether
outstanding on the date of the Indenture or thereafter incurred, assumed or
guaranteed and all deferrals, renewals, extensions and refundings of, or
amendments, modifications or supplements to, any such Debt; provided, however,
that the following will not constitute Senior Indebtedness: (a) any Debt if the
instrument creating the same or evidencing the same or pursuant to which the
same is outstanding expressly provides (i) that such Debt shall not be senior in
right of payment to the Securities, or (ii) that such Debt shall be subordinated
to any other Debt of the Company, unless such instrument expressly provides that
such Debt shall be senior in right of payment to the Securities; (b) any Debt of
the Company in respect of the Securities; (c) any Debt of the Company to any
Subsidiary or Affiliate of the Company and (d) the Company's Liquid Yield
Options Notes, Zero Coupon--Subordinated due 2001, the Company's Liquid Yield
Option Notes, Zero Coupon--Subordinated due 2012 or the Liquid Yield Option
Notes Zero Coupon--Subordinated due 2010 of Chemical Waste Management, Inc.,
which are being assumed by the Company as of this date.

          SECTION 10.2  Payment Over of Proceeds upon Dissolution, Etc.  Upon
any distribution of assets of the Company in the event of

          (a)  any insolvency or bankruptcy case or proceeding, or any
     receivership, liquidation, reorganization or other similar case or
     proceeding in 

                                      -52-
<PAGE>
 
     connection therewith, relative to the Company or to its creditors, as such,
     or to its assets, or

          (b)  any liquidation, dissolution or other winding up of the Company,
     whether voluntary or involuntary and whether or not involving insolvency or
     bankruptcy, or

          (c)  any assignment for the benefit of creditors or any other
     marshalling of assets and liabilities of the Company,

then and in any such event

               (1)  the holders of Senior Indebtedness shall be entitled to
     receive payment in full of all amounts due or to become due on or in
     respect of all Senior Indebtedness before the Holders of the Securities are
     entitled to receive any payment on account of the Principal Amount at
     Maturity, cash in respect of conversions in accordance with Article XI,
     Stated Issue Price plus accrued Stated Discount, Redemption Price, Purchase
     Price, Change in Control Purchase Price or interest in respect of the
     Securities; and

               (2)  any payment or distribution of assets of the Company of any
     kind or character, whether in cash, property or securities, by set-off or
     otherwise, to which the Holders or the Trustee would be entitled but for
     the provisions of this Article X, including any such payment or
     distribution which may be payable or deliverable by reason of the payment
     of any other Debt of the Company being subordinated to the payment of the
     Securities, shall be paid by the liquidating trustee or agent or other
     person making such payment or distribution, whether a trustee in
     bankruptcy, a receiver or liquidating trustee or otherwise, directly to the
     holders of Senior Indebtedness or their representative or representatives
     or to the trustee or trustees under any indenture under which any
     instruments evidencing any of such Senior Indebtedness may have been
     issued, ratably according to the aggregate amounts remaining unpaid on
     account of the principal of, and premium and interest on the Senior
     Indebtedness held or represented by each, to the extent necessary to

                                      -53-
<PAGE>
 
     make payment in full of all Senior Indebtedness remaining unpaid, after
     giving effect to any concurrent payment or distribution to the holders of
     such Senior Indebtedness.

          In the event that, notwithstanding the foregoing provisions of this
Section 10.2, the Trustee or the Holder of any Security shall receive any
payment or distribution of assets of the Company of any kind or character,
whether in cash, property or securities, including any such payment or
distribution which may be payable or deliverable by reason of the payment of any
other Debt of the Company being subordinated to the payment of the Securities,
before all Senior Indebtedness is paid in full or payment thereof provided for,
and if such fact shall then have been made known to the Trustee as provided in
Section 10.10 or such Holder, as the case may be, pursuant to the terms of this
Indenture, then and in such event such payment or distribution shall be paid
over or delivered forthwith to the trustee in bankruptcy, receiver, liquidating
trustee, Custodian, assignee, agent or other person making payment or
distribution of assets of the Company for application to the payment of all
Senior Indebtedness remaining unpaid, to the extent necessary to pay all Senior
Indebtedness in full, after giving effect to any concurrent payment or
distribution to or for the holders of Senior Indebtedness.

          For purposes of this Article X only, the words "cash, property or
securities" shall not be deemed to include shares of Capital Stock of the
Company as reorganized or readjusted, or securities of the Company or any other
corporation provided for by a plan of reorganization or readjustment the payment
of which is subordinated, at least to the extent provided in this Article X with
respect to the Securities, to the payment of all Senior Indebtedness which may
at the time be outstanding; provided, however, that (i) Senior Indebtedness is
assumed by the new corporation resulting from any such reorganization or
readjustment, and (ii) the rights of the holders of the Senior Indebtedness are
not, without the consent of such holders, altered by such reorganization or
readjustment.

          The consolidation of the Company with, or the merger of the Company
into, another person or the liquidation or dissolution of the Company following
the con-

                                      -54-
<PAGE>
 
veyance or transfer of its properties and assets substantially as an entirety to
another person upon the terms and conditions set forth in Article V shall not be
deemed a dissolution, winding up, liquidation, reorganization, assignment for
the benefit of creditors or marshalling of assets and liabilities of the Company
for the purposes of this Section 10.2 if the person formed by such consolidation
or into which the Company is merged or the person which acquires by conveyance
or transfer the properties and assets of the Company substantially as an
entirety, as the case may be, shall, as a part of such consolidation, merger,
conveyance or transfer, comply with the conditions set forth in Article V.

          SECTION 10.3  Acceleration of Securities.  In the event that any
Securities are declared due and payable before their Stated Maturity pursuant to
Section 6.2, then and in such event the Company shall promptly, and in any event
within ten Business Days of the occurrence thereof, notify holders of Senior
Indebtedness of such acceleration.  The Company may not make any payment on the
Securities until 120 days have passed after such notice of acceleration is given
to holders of Senior Indebtedness and may thereafter pay the Securities if this
Article X permits the payment at that time.

          In the event that, notwithstanding the foregoing, the Company shall
make any payment to the Trustee or the Holder of any Securities prohibited by
the foregoing provisions of this Section 10.3, and if such facts shall, at or
prior to the time of such payment, have been made known to the Trustee as
provided in Section 10.10 or such Holder, as the case may be, pursuant to the
terms of this Indenture, then and in such event such payment shall be paid over
and delivered forthwith to the Company by or on behalf of the person holding
such payment for the benefit of the holders of Senior Indebtedness.

          The provisions of this Section 10.3 shall not apply to any payment
with respect to which Section 10.2 would be applicable.

          SECTION 10.4  Default on Senior Indebtedness.  The Company may not
make any payment of the Principal Amount at Maturity, Stated Issue Price plus
accrued Stated Discount, Redemption Price, Purchase Price, Change in Control 
Purchase Price or interest in respect of the Securities 

                                      -55-
<PAGE>
 
or otherwise acquire any Securities for cash or property (except as otherwise
provided by Article XI and other than for Capital Stock of the Company) if:

               (1)  a default on Senior Indebtedness occurs and is continuing
     that permits holders of such Senior Indebtedness to accelerate its
     maturity; and

               (2)  the default is the subject of judicial proceedings or the
     Company receives a notice of default thereof from any person who may give
     such notice pursuant to the instrument evidencing or document governing
     such Senior Indebtedness.  If the Company receives any such notice, then a
     similar notice received within nine months thereafter relating to the same
     default (as distinguished from a subsequent default, including a subsequent
     default of the same provision) on the same issue of Senior Indebtedness
     shall not be effective for purposes of this Section 10.4.

          The Company may resume payments on the Securities and may acquire
Securities if and when:

               (A)  the default is cured or waived and such acceleration has
          been rescinded or annulled in accordance with the terms of such Senior
          Indebtedness; or

               (B)  in the case of defaults on Senior Indebtedness other than
          payment defaults, 120 or more days pass after the receipt by the
          Company of the notice described in clause (2) above and the default is
          not then the subject of judicial proceedings; and

this Article X otherwise permits the payment or acquisition at that time.

          In the event that, notwithstanding the foregoing, the Company shall
make any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section 10.4, and if such facts shall, 

                                      -56-
<PAGE>
 
at or prior to the time of such payment, have been made known to the Trustee as
provided in Section 10.10 or such Holder, as the case may be, pursuant to the
terms of this Indenture, then and in such event such payment shall be paid over
and delivered forthwith to the Company by or on behalf of the person holding
such payment for the benefit of the holders of the Senior Indebtedness.

          Nothing contained in this Article X or elsewhere in this Indenture or
in any of the Securities shall prevent the conversion by a Holder of any
Securities in accordance with the provisions for conversion of such Securities
set forth in this Indenture, including the payment of cash in lieu of fractional
shares of Common Stock in accordance with Article XI, or in any of such
Securities in the event of an occurrence of the events described in clauses (1)
and (2) of this Section 10.4.

          The provisions of this Section 10.4 shall not apply to any payment
with respect to which Section 10.2 would be applicable.

          SECTION 10.5  Payment Permitted If No Default.  Nothing contained in
this Article X or elsewhere in this Indenture or in any of the Securities shall
prevent (a) the Company, at any time except during the pendency of any case,
proceeding, dissolution, liquidation or other winding up, assignment for the
benefit of creditors or other marshalling of assets and liabilities of the
Company referred to in Section 10.2 or under the conditions described in Section
10.3 or 10.4, from making payments at any time of the Principal Amount at
Maturity, Stated Issue Price plus accrued Stated Discount, cash in respect of
conversions in accordance with Article XI, Redemption Price, Purchase Price,
Change in Control Purchase Price or interest, as the case may be, in respect of
the Securities, or (b) the application by the Trustee or the retention by any
Holder of any money deposited with it hereunder to the payment of or on account
of the Principal Amount at Maturity, Stated Issue Price plus accrued Stated
Discount, Redemption Price, Purchase Price, Change in Control Purchase Price or
interest, as the case may be, in respect of the Securities if the Trustee did
not have, at the time provided in the proviso to the first paragraph of Section
10.10, notice that such payment would have been prohibited by the provisions of
this Article X.

                                      -57-
<PAGE>
 
          SECTION 10.6  Subrogation to Rights of Holders of Senior Indebtedness.
Subject to the payment in full of all Senior Indebtedness, 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 Article X (equally and ratably with the holders of all indebtedness of the
Company which by its express terms is subordinated to indebtedness of the
Company to substantially the same extent as the Securities are subordinated and
is entitled to like rights of subrogation) to the rights of the holders of such
Senior Indebtedness to receive payments or distributions of cash, property or
securities applicable to the Senior Indebtedness until the Principal Amount at
Maturity, Stated Issue Price plus accrued Stated Discount, cash in respect of
conversions in accordance with Article XI, Redemption Price, Purchase Price or
Change in Control Purchase Price or interest, as the case may be, in respect of
the Securities shall be paid in full.  For purposes of such subrogation, no
payments or distributions to the holders of the Senior Indebtedness of any cash,
property or securities to which the Holders of the Securities or the Trustee
would be entitled except for the provisions of this Article X, and no payments
pursuant to the provisions of this Article X to the Company or to the holders of
Senior Indebtedness by Holders of the Securities or the Trustee, shall, as
between the Company, its creditors other than holders of Senior Indebtedness and
the Holders of the Securities, be deemed to be a payment or distribution by the
Company to or on account of the Senior Indebtedness.

          SECTION 10.7  Provisions Solely to Define Relative Rights.  The
provisions of this Article X are and are intended solely for the purpose of
defining the relative rights of the Holders of the Securities, on one hand, and
the holders of Senior Indebtedness, on the other hand.  Nothing contained in
this Article X or elsewhere in this Indenture or in the Securities is intended
to or shall:

          (a)  impair, as among the Company, its creditors other than holders of
     Senior Indebtedness and the Holders of the Securities, the obligation of
     the Company, which is absolute and unconditional, to pay to the Holders of
     the Securities the Principal Amount at Maturity, Stated Issue Price plus
     accrued 

                                      -58-
<PAGE>
 
     Stated Discount, cash in respect of conversions in accordance with Article
     XI, Redemption Price, Purchase Price, Change in Control Purchase Price, and
     interest, as the case may be, in respect of the Securities as and when the
     same shall become due and payable in accordance with the terms of the
     Securities and this Indenture and which, subject to the rights under this
     Article X of the holders of Senior Indebtedness, is intended to rank
     equally with all other general obligations of the Company; or

          (b)  affect the relative rights against the Company of the Holders of
     the Securities and creditors of the Company other than holders of Senior
     Indebtedness; or

          (c)  prevent the Trustee or the Holder of any Security from exercising
     all remedies otherwise permitted by applicable law upon default under this
     Indenture, subject to the rights, if any, under this Article X of the
     holders of Senior Indebtedness to receive cash, property or securities
     otherwise payable or deliverable to the Trustee or such Holder.

          SECTION 10.8  Trustee to Effectuate Subordination.  Each Holder of a
Security by such Holder's acceptance thereof authorizes and directs the Trustee
on such Holder's behalf to take such action as may be necessary or appropriate
to effectuate the subordination provided in this Article X and appoints the
Trustee such Holder's attorney-in-fact for any and all such purposes.

          SECTION 10.9 No Waiver of Subordination Provisions. No right of any
present or future holder of any Senior Indebtedness to enforce subordination as
herein provided 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, provisions and covenants of this Indenture, regardless of any
knowledge thereof any such holder may have or be otherwise charged with.

          Without in any way limiting the generality of the foregoing paragraph,
the holders of Senior Indebtedness may, at any time and from time to time,
without the 

                                      -59-
<PAGE>
 
consent of, or notice to, the Trustee or the Holders of the Securities, without
incurring responsibility to the Holders of the Securities and without impairing
or releasing the subordination provided in this Article X or the obligations
hereunder of the Holders of the Securities to the holders of Senior
Indebtedness, do any one or more of the following: (i) change the manner, place
or terms of payment or extend the time of payment of, or renew or alter, Senior
Indebtedness, or otherwise amend or supplement in any manner Senior Indebtedness
or any instrument evidencing the same or any agreement under which Senior
Indebtedness is outstanding; (ii) sell, exchange, release or otherwise dispose
of any property pledged, mortgaged or otherwise securing Senior Indebtedness;
(iii) release any person liable in any manner for the collection of Senior
Indebtedness; and (iv) exercise or refrain from exercising any rights against
the Company or any other person.

          SECTION 10.10 Notice to Trustee. The Company shall give prompt written
notice to the Trustee of any fact known to the Company which would prohibit the
making of any payment to or by the Trustee in respect of the Securities or that
would permit the resumption of any such payment. Notwithstanding the provisions
of this Article X or any other provision of this Indenture, the Trustee shall
not be charged with knowledge of the existence of any facts which would prohibit
the making of any payment to or by the Trustee in respect of the Securities or
that would permit the resumption of any such payment, unless and until the
Trustee shall have received written notice thereof from the Company or a holder
of Senior Indebtedness or from any trustee or agent therefor; and, prior to the
receipt of any such written notice, the Trustee, subject to the provisions of
Section 7.1, shall be entitled in all respects to assume that no such facts
exist; provided, however, that if a Responsible Officer of the Trustee shall not
have received, at least three Business Days prior to the date upon which by the
terms hereof any such money may become payable for any purpose (including,
without limitation, the payment of the Prin-cipal Amount at Maturity, Stated
Issue Price plus accrued Stated Discount, Redemption Price, Purchase Price,
Change in Control Purchase Price or interest as the case may be, in respect of
any Security), the notice with respect to such money provided for in this
Section 10.10, then, anything herein contained to the contrary notwithstand-

                                      -60-
<PAGE>
 
ing, the Trustee shall have full power and authority to receive such money and
to apply the same to the purpose for which such money was received and shall not
be affected by any notice to the contrary which may be received by it within 
three Business Days prior to such date; nor shall the Trustee be charged with 
knowledge of the curing of any such default or elimination of the act or 
condition preventing any such payment unless and until the Trustee shall have 
received an Officers' Certificate to such effect.

          Subject to the provisions of Section 7.1, the Trustee shall be
entitled to rely on the delivery to it of a written notice by a person
representing himself to be a holder of Senior Indebtedness (or a trustee or
agent on behalf of such holder) to establish that such notice has been given by
a holder of Senior Indebtedness (or a trustee or agent on behalf of any such
holder). In the event that the Trustee determines in good faith that further
evidence is required with respect to the right of any person as a holder of
Senior Indebtedness to participate in any payment or distribution pursuant to
this Article X, the Trustee may request such person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of Senior Indebtedness
held by such person, the extent to which such person is entitled to participate
in such payment or distribution and any other facts pertinent to the rights of
such person under this Article X, and if such evidence is not furnished, the
Trustee may defer any payment which it may be required to make for the benefit
of such person pursuant to the terms of this Indenture pending judicial
determination as to the right of such person to receive such payment.

          SECTION 10.11 Reliance on Judicial Order or Certificate of Liquidating
Agent. Upon any payment or distribution of assets of the Company referred to in
this Article X, the Trustee, subject to the provisions of Section 7.1, and the
Holders of the Securities shall be entitled to rely upon any order or decree
entered by any court of competent jurisdiction in which such insolvency,
bankruptcy, receivership, liquidation, reorganization, dissolution, winding up
or similar case or proceeding is pending, or a certificate of the trustee in
bankruptcy, liquidating trustee, Custodian, receiver, assignee for the benefit
of creditors, agent or other person making such payment or distribution,
delivered to the Trustee or to the Holders of Securities, for the purpose of
ascertaining the persons entitled to participate in such payment or
distribution, the holders of Senior Indebtedness and other indebtedness of the
Company, the amount thereof or payable thereon, the amount or amounts paid or

                                      -61-
<PAGE>
 
distributed thereon and all other facts pertinent thereto or to this Article X.

          SECTION 10.12 Trustee Not Fiduciary for Holders of Senior
Indebtedness. The Trustee shall not be deemed to owe any fiduciary duty to the
holders of Senior Indebtedness. The Trustee shall not be charged with knowledge
of the existence of Senior Indebtedness or of any facts that would prohibit any
payment hereunder or that would permit the resumption of any such payment unless
a Responsible Officer of the Trustee shall have received notice to that effect
at the address of the Trustee set forth in Section 12.2. With respect to the
holders of Senior Indebtedness, the Trustee undertakes to perform or to observe
only such of its covenants or obligations as are specifically set forth in this
Article X and no implied covenants or obligations with respect to holders of
Senior Indebtedness shall be read into this Indenture against the Trustee. 
Except in the case of the Trustee's negligence or bad faith, the Trustee shall 
not be liable to any holder of Senior Indebtedness if it shall mistakenly pay 
over or deliver to Securityholders, the Company or any other person monies or 
assets to which any holder of Senior Indebtedness shall be entitled by virtue of
this Article or otherwise.

          SECTION 10.13 Rights of Trustee as Holder of Senior Indebtedness;
Preservation of Trustee's Rights. The Trustee in its individual capacity shall
be entitled to all the rights set forth in this Article X with respect to any
Senior Indebtedness which may at any time be held by it, to the same extent as
any other holder of Senior Indebtedness, and nothing in this Indenture shall
deprive the Trustee of any of its rights as such holder.

          Nothing in this Article X shall apply to claims of, or payments to,
the Trustee under or pursuant to Section 7.7.

          SECTION 10.14 Article X Applicable to Paying Agents. In case at any
time any Paying 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
X shall in such case (unless the context otherwise requires) be construed as
extending to and including such Paying Agent within its meaning as fully for all
intents and purposes as if such Paying Agent were named in this Article X in
addition to or in place of the Trustee; provided, however, that Sections 10.10
and 10.12 shall not apply to the Company or any Affiliate of the Company if it
or such Affiliate acts as Paying Agent.

                                      -62-
<PAGE>
 
          SECTION 10.15  No Suspension of Remedies.  Nothing contained in this 
Article shall limit the right of the Trustee or the Holders of Securities to 
take any action to accelerate the maturity of the Securities pursuant to the 
provisions described under "Events of Default" and as set forth in this 
Indenture or to pursue any rights or remedies hereunder or under applicable law,
subject to the rights, if any, under this Article of the holders, from time to 
time, of Senior Indebtedness to receive the cash, property or securities 
receivable upon the exercise of such rights or remedies.
 
                                   ARTICLE XI

                                   CONVERSION

          SECTION 11.1  Conversion Privilege.  A Holder of a Security may
convert such Security into Common Stock at any time during the period stated in
paragraph 9 of the Securities.  The number of shares of Common Stock issuable
upon conversion of a Security per $ 1,000 of Principal Amount at Maturity
thereof (the "Conversion Rate") shall be that set forth in paragraph 9 in the
Securities, subject to adjustment as herein set forth. Such right of Holders to
convert Securities into Common Stock is subject to the Company's right to elect
to pay a Holder surrendering a Security pursuant to this Article XI the amount
of cash set forth in the next succeeding sentence, in lieu of delivering such
shares of Common Stock; provided that if such payment of cash is not allowed
pursuant to the provisions of the Indenture or otherwise, the Company shall
deliver shares of Common Stock (and cash, in lieu of fractional shares of Common
Stock) in accordance with this Article XI, whether or not the Company has
delivered its notice of whether such Security shall be converted into Common
Stock or cash pursuant to Section 11.2.  The amount of cash to be paid in lieu
of shares of Common Stock pursuant to such election by the Company per $1,000
Principal Amount at Maturity of a Security upon conversion of such Security
shall be equal to the Sale Price of a share of Common Stock on the Business Day
immediately prior to the Conversion Date multiplied by the Conversion Rate in
effect on the Conversion Date, as adjusted in accordance with this Article XI
and as further adjusted to reflect adjustments thereto calculated pursuant to
the terms of this Article XI with respect to events (i) that give rise to an
adjustment to the Conversion Rate pursuant to the terms of this Article XI which
has not become effective on or prior to the Conversion Date and (ii) with
respect to which the Time of Determination has occurred.

          In accordance with Articles VI and X, the Company shall not pay cash
in lieu of delivering shares of Common Stock upon the conversion of any Security
pursuant to the terms of this Article XI (other than cash in lieu of fractional
shares pursuant to Section 11.3) if there has occurred (prior to, on or after,
as the case may be, the Conversion Date or the date on which the 

                                      -63-
<PAGE>
 
Company delivers its notice of whether such Security shall be converted into
Common Stock or cash pursuant to Section 11.2) and is continuing an Event of
Default (other than a default in such payment on such Securities).

          A Holder may convert a portion of the Principal Amount at Maturity of
a Security if the portion is $1,000 or an integral multiple of $1,000.
Provisions of this Indenture that apply to conversion of all of a Security also
apply to conversion of a portion of a Security.

          The "Sale Price" of the Common Stock on any date means the closing per
share sale price (or, if no closing sale price is reported, the average of the
bid and ask prices or, if more than one in either case, the average of the
average bid and average ask prices) on such date as reported in the composite
transactions for the principal United States securities exchange on which the
Common Stock is traded or, if the Common Stock is not listed on a United States
national or regional securities exchange, as reported by Nasdaq.

          "Quoted Price" means, for any given day, the last reported per share
sale price (or, if no sale price is reported, the average of the bid and ask
prices or, if more than one in either case, the average of the average bid and
average ask prices) on such day of the Common Stock on the New York Stock
Exchange Composite Tape or, in the event Common Stock is not listed on the New
York Stock Exchange, in the composite transactions for such other national or
regional securities exchange upon which the Common Stock is listed, or, if the
Common Stock is not listed on a national or regional securities exchange, as
reported by Nasdaq. In the absence of such quotations, the Company shall be
entitled to determine the Quoted Price on the basis of such quotations as it
considers appropriate.

          "Average Quoted Price" means the average of the Quoted Prices of
the Common Stock for the shortest of

          (i)  30 consecutive trading days ending on the last full trading day
     prior to the Time of Determination with respect to the rights, warrants or
     options or distribution in respect of which the Average Quoted Price is
     being calculated, or

                                      -64-
<PAGE>
 
          (ii)  the period (x) commencing on the date next succeeding the first
     public announcement of (a) the issuance of rights, warrants or options or
     (b) the distribution, in each case, in respect of which the Average Quoted
     Price is being calculated and (y) proceeding through the last full trading
     day prior to the Time of Determination with respect to the rights, warrants
     or options or distribution in respect of which the Average Quoted Price is
     being calculated (excluding days within such period, if any, which are not
     trading days), or

          (iii)  the period, if any, (x) commencing on the date next succeeding
     the Ex-Dividend Time with respect to the next preceding (a) issuance of
     rights, warrants or options or (b) distribution, in each case, for which an
     adjustment is required by the provisions of Section 11.6(4), 11.7 or 11.8
     and (y) proceeding through the last full trading day prior to the Time of
     Determination with respect to the rights, warrants or options or
     distribution in respect of which the Average Quoted Price is being
     calculated (excluding days within such period, if any, which are not
     trading days).

          In the event that the Ex-Dividend Time (or in the case of a
subdivision, combination or reclassification, the effective date with respect
thereto) with respect to a dividend, subdivision, combination or
reclassification to which Section 11.6(1), (2), (3) or (5) applies occurs during
the period applicable for calculating "Average Quoted Price" pursuant to the
definition in the preceding sentence, "Average Quoted Price" shall be calculated
for such period in a manner determined by the Board of Directors to reflect the
impact of such dividend, subdivision, combination or reclassification on the
Quoted Price of the Common Stock during such period.

          "Time of Determination" means the time and date of the earlier of (i)
the determination of stockholders entitled to receive rights, warrants or
options or a distribution, in each case, to which Section 11.7 or 11.8 applies
and (ii) the time ("Ex-Dividend Time") immediately prior to the commencement of
"ex-dividend" trading for such rights, warrants or options or distribution on
the New York Stock Exchange or such other national or region-

                                      -65-
<PAGE>
 
al exchange or market on which the Common Stock are then listed or quoted.

          SECTION 11.2  Conversion Procedure.  To convert a Security a Holder
must satisfy the requirements in paragraph 9 of the Securities.  The date on
which the Holder satisfies all those requirements is the conversion date (the
"Conversion Date").  As soon as practicable after the Conversion Date, the
Company shall prepare and deliver to the Holder, through the Conversion Agent, 
written notice of whether such Security shall be converted into Common Stock or 
cash.  If the Company shall have notified the Holder that such Security shall be
converted into Common Stock, the Company shall deliver to the Holder no later
than the seventh Business Day following such Conversion Date, through the
Conversion Agent, a certificate for the number of shares of Common Stock
issuable upon the conversion and cash in lieu of any fractional shares of Common
Stock determined pursuant to Section 11.3.  If the Company shall have notified
the Holder that such Security shall be converted into cash, the Company shall
deliver to the Holder surrendering such Securities the amount of cash payable
upon such conversion no later than the fifth Business Day following such
Conversion Date.  The person in whose name the certificate is registered shall
be treated as a stockholder of record on and after the Conversion Date;
provided, however, that no surrender of a Security on any date when the stock
transfer books of the Company shall be closed shall be effective to constitute
the person or persons entitled to receive the shares of Common Stock upon such
conversion as the record holder or holders of such shares of Common Stock on
such date, but such surrender shall be effective to constitute the person or
persons entitled to receive such shares of Common Stock as the record holder or
holders thereof for all purposes at the close of business on the next succeeding
day on which such stock transfer books are open; such conversion shall be at the
Conversion Rate in effect on the date that such Security shall have been surren-
dered for conversion, as if the stock transfer books of the Company had not been
closed.  Upon conversion of a Security, such person shall no longer be a Holder
of such Security.

          No payment or adjustment will be made for dividends on, or other
distributions with respect to, any Common Stock except as provided in this
Article XI.  On 

                                      -66-
<PAGE>
 
conversion of a Security, that portion of accrued Stated Discount (and accrued
Original Issue Discount) attributable to the period from the Issue Date of the
Security to the Conversion Date and accrued but unpaid interest attributable to
the period from the most recent interest payment date to the Conversion Date
with respect to the converted Security shall not be cancelled, extinguished or
forfeited, but rather shall be deemed to be paid in full to the Holder thereof
through delivery of the Common Stock (together with the cash payment, if any, in
lieu of any fractional shares of Common Stock) or the payment of cash at the
election of the Company as provided above in exchange for the Security being
converted pursuant to the provisions hereof; and the fair market value of such
shares of Common Stock (together with any such cash payment in lieu of any
fractional shares of Common Stock) or such payment in cash at the election of
the Company, as the case may be, shall be treated as issued or paid, to the
extent thereof, first in exchange for accrued Stated Discount (and accrued
Original Issue Discount) to the Conversion Date and the interest attributable to
the period from the most recent interest payment date accrued to the Conversion
Date, and the balance, if any, of such fair market value of such shares of
Common Stock (and any such cash payment) or such payment in cash at the election
of the Company, as the case may be, shall be treated as issued or paid in
exchange for the Stated Issue Price and Issue Price of the Security being
converted pursuant to the provisions hereof.

          If the Holder converts more than one Security at the same time, the
number of shares of Common Stock issuable or the amount of cash to be paid, as
the case may be, upon the conversion shall be based on the total Principal
Amount at Maturity of the Securities converted.

          Upon surrender of a Security that is converted in part, the Company
shall execute, and the Trustee shall authenticate and deliver to the Holder, a
new Security in an authorized denomination equal in Principal Amount at Maturity
to the unconverted portion of the Security surrendered.

          If the last day on which a Security may be converted is not a Business
Day, the Security may be surrendered on the next succeeding day that is a
Business Day.

                                      -67-
<PAGE>
 
          SECTION 11.3  Fractional Interests in Common Stock.  The Company will
not issue a fractional share of Common Stock upon conversion of a Security.
Instead, the Company will deliver cash for the current market value of such
fractional share in an amount equal to the Sale Price of a share of Common Stock
on the Business Day immediately preceding the Conversion Date, multiplied by the
fraction of a share to which such Holder would have been entitled.

          SECTION 11.4  Taxes on Conversion.  If a Holder converts a Security,
the Company shall pay any documentary, stamp or similar issue or transfer tax
due on the issue of shares of Common Stock upon the conversion.  However, the
Holder shall pay any such tax which is due because the Holder requests the
shares of Common Stock to be issued in a name other than the Holder's name.  The
Conversion Agent may refuse to deliver the certificates representing the shares
of Common Stock being issued in a name other than the Holder's name until the
Conversion Agent receives a sum sufficient to pay any tax which will be due
because the shares of Common Stock are to be issued in a name other than the
Holder's name.  Nothing herein shall preclude any tax withholding required by
law or regulations.

          SECTION 11.5  Company to Provide Common Stock.  The Company shall,
prior to issuance of any Securities under this Article XI, and from time to time
as may be necessary, reserve out of its authorized but unissued shares of Common
Stock a sufficient number of shares of Common Stock to permit the conversion of
the Securities.

          All shares of Common Stock delivered upon conversion of the Securities
shall be newly issued shares of Common Stock or treasury shares of Common Stock,
shall be duly and validly issued and fully paid and nonassessable and shall be
free from preemptive rights and free of any lien or adverse claim.

          The Company will endeavor promptly to comply with all Federal and
state securities laws regulating the offer and delivery of Common Stock upon
conversion of Securities, if any, and will use all reasonable efforts to list or
cause to have quoted such shares of Common Stock on each national securities
exchange or in the 

                                      -68-
<PAGE>
 
over-the-counter market or such other market on which the Common Stock is then
listed or quoted.

          SECTION 11.6  Adjustment for Change in Capital Stock.  If, after the
Issue Date of the Securities, the Company:

               (1)  pays a dividend or makes a distribution on its Common Stock
     in shares of its Common Stock;

               (2)  subdivides its outstanding Common Stock into a greater
     number of shares of Common Stock;

               (3)  combines its outstanding Common Stock into a smaller number
     of shares of Common Stock;

               (4)  pays a dividend or makes a distribution on its Common Stock
     in shares of its Capital Stock (other than Common Stock or rights, warrants
     or options for its Capital Stock); or

               (5)  issues by reclassification of its Common Stock any shares of
     its Capital Stock (other than rights, warrants or options for its Capital
     Stock),

then the conversion privilege and the Conversion Rate in effect immediately
prior to such action shall be adjusted so that the Holder of a Security
thereafter converted may receive the number of shares of Capital Stock of the
Company which such Holder would have owned immediately following such action if
such Holder had converted the Security immediately prior to such action.

          The adjustment shall become effective immediately after the record
date in the case of a dividend or distribution and immediately after the
effective date in the case of a subdivision, combination or reclassification.

          If after an adjustment a Holder of a Security upon conversion of such
Security may receive shares of two or more classes of Capital Stock of the
Company, the Conversion Rate shall thereafter be subject to adjustment upon the
occurrence of an action taken with respect to 

                                      -69-
<PAGE>
 
any such class of Capital Stock as is contemplated by this Article XI with
respect to the Common Stock, on terms comparable to those applicable to Common
Stock in this Article XI.

          SECTION 11.7  Adjustment for Rights Issue.  If after the Issue Date of
the Securities, the Company distributes any rights, warrants or options to all
holders of its Common Stock entitling them, for a period expiring within 60 days
after the record date for such distribution, to purchase Common Stock at a price
per share of Common Stock less than the Quoted Price as of

                                      -70-
<PAGE>
 
the Time of Determination, the Conversion Rate shall be adjusted in accordance
with the formula:

               R'  =  R x      (O + N)
                           ---------------
                           (O + (N x P)/M)

     where:

     R' = the adjusted Conversion Rate.

     R =  the current Conversion Rate.

     O =  the number of shares of Common Stock outstanding on the record date
          for the distribution to which this Section 11.7 is being applied.

     N =  the number of additional shares of Common Stock offered pursuant to
          the distribution.

     P =  the exercise price per share of the additional Common Stock.

     M =  the Average Quoted Price, minus, in the case of (i) a distribution to
          which Section 11.6(4) applies or (ii) a distribution to which Section
          11.8 applies, for which, in each case, (x) the record date shall occur
          on or before the record date for the distribution to which this
          Section 11.7 applies and (y) the Ex-Dividend Time shall occur on or
          after the date of the Time of Determination for the distribution to
          which this Section 11.7 applies, the fair market value (on the record
          date for the distribution to which this Section 11.7 applies) of the
          (1) Capital Stock of the Company distributed in respect of each share
          of Common Stock in such Section 11.6(4) distribution and (2) assets of
          the Company or debt securities or any rights, warrants or options to
          purchase securities of the Company distributed in respect of each
          share of Common Stock in such Section 11.8 distribution.

The Board of Directors shall determine fair market values for the purposes of
this Section 11.7.

          The adjustment shall become effective immediately after the record
date for the determination of

                                      -71-
<PAGE>
 
stockholders entitled to receive the rights, warrants or options to which this
Section 11.7 applies.  If all of the shares of Common Stock subject to such
rights, warrants or options have not been issued when such rights, warrants or
options expire, then the Conversion Rate shall promptly be readjusted to the
Conversion Rate which would then be in effect had the adjustment upon the
issuance of such rights, warrants or options been made on the basis of the
actual number of shares of Common Stock issued upon the exercise of such rights,
warrants or options.

          No adjustment shall be made under this Section 11.7 if the application
of the formula stated above in this Section 11.7 would result in a value of R'
that is equal to or less than the value of R.

          SECTION 11.8  Adjustment for Other Distributions.  If, after the Issue
Date of the Securities, the Company distributes to all holders of its Common
Stock any of its assets, or debt securities or any rights, warrants or options
to purchase securities of the Company (including securities or cash, but
excluding (x) distributions of Capital Stock referred to in Section 11.6 and
distributions of rights, warrants or options referred to in Section 11.7 and (y)
cash dividends or other cash distributions that are paid out of consolidated
current net earnings or earnings retained in the business as shown on the books
of the Company unless such cash dividends or other cash distributions are
Extraordinary Cash Dividends) the Conversion Rate shall be adjusted, subject to
the provisions of the last paragraph of this Section 11.8, in accordance with
the formula:

          R'  =  R x    M
                      -----
                       M-F

     where:

     R' = the adjusted Conversion Rate.

     R =  the current Conversion Rate.

     M =  the Average Quoted Price, minus, in the case of a distribution to
          which Section 11.6(4) applies, for which (i) the record date shall
          occur on or before the record date for the

                                      -72-
<PAGE>
 
          distribution to which this Section 11.8 applies and (ii) the Ex-
          Dividend Time shall occur on or after the date of the Time of
          Determination for the distribution to which this Section 11.8 applies,
          the fair market value (on the record date for the distribution to
          which this Section 11.8 applies) of any Capital Stock of the Company
          distributed in respect of each share of Common Stock in such Section
          11.6(4) distribution.

     F =  the fair market value (on the record date for the distribution to
          which this Section 11.8 applies) of the assets, securities, rights,
          warrants or options to be distributed in respect of each share of
          Common Stock in the distribution to which this Section 11.8 is being
          applied (including, in the case of cash dividends or other cash
          distributions giving rise to an adjustment, all such cash distributed
          concurrently).

The Board of Directors shall determine fair market values for the purposes of
this Section 11.8.

          The adjustment shall become effective immediately after the record
date for the determination of stockholders entitled to receive the distribution
to which this Section 11.8 applies.

          For purposes of this Section 11.8, the term "Extraordinary Cash
Dividend" shall mean any cash dividend with respect to the Common Stock the
amount of which, together with the aggregate amount of cash dividends on the
Common Stock to be aggregated with such cash dividend in accordance with the
provisions of this paragraph, equals or exceeds the threshold percentages set
forth in item (i) or (ii) below:

          (i)  If, upon the date prior to the Ex-Dividend Time with respect to a
     cash dividend on the Common Stock, the aggregate amount of such cash
     dividend together with the amounts of all cash dividends on the Common
     Stock with Ex-Dividend Times occurring in the 85 consecutive day period
     ending on the date prior to the Ex-Dividend Time with respect to the cash
     dividend to which this provision is being

                                      -73-
<PAGE>
 
     applied equals or exceeds on a per share basis 12.5% of the average of the
     Quoted Prices during the period beginning on the date after the first such
     Ex-Dividend Time in such period and ending on the date prior to the Ex-
     Dividend Time with respect to the cash dividend to which this provision is
     being applied (except that if no other cash dividend has had an Ex-Dividend
     Time occurring in such period, the period for calculating the average of
     the Quoted Prices shall be the period commencing 85 days prior to the date
     prior to the Ex-Dividend Time with respect to the cash dividend to which
     this provision is being applied), such cash dividend together with each
     other cash dividend with an Ex-Dividend Time occurring in such 85 day
     period shall be deemed to be an Extraordinary Cash Dividend and for
     purposes of applying the formula set forth above in this Section 11.8, the
     value of "F" shall be equal to (w) the aggregate amount of such cash
     dividend together with the amounts of the other cash dividends with Ex-
     Dividend Times occurring in such period minus (x) the aggregate amount of
     such other cash dividends with Ex-Dividend Times occurring in such period
     for which a prior adjustment in the Conversion Rate was previously made
     under this Section 11.8.

          (ii)  If, upon the date prior to the Ex-Dividend Time with respect to
     a cash dividend on the Common Stock, the aggregate amount of such cash
     dividend together with the amounts of all cash dividends on the Common
     Stock with Ex-Dividend Times occurring in the 365 consecutive day period
     ending on the date prior to the Ex-Dividend Time with respect to the cash
     dividend to which this provision is being applied equals or exceeds on a
     per share basis 25% of the average of the Quoted Prices during the period
     beginning on the date after the first such Ex-Dividend Time in such period
     and ending on the date prior to the Ex-Dividend Time with respect to the
     cash dividend to which this provision is being applied (except that if no
     other cash dividend has had an Ex-Dividend Time occurring in such period,
     the period for calculating the average of the Quoted Prices shall be the
     period commencing 365 days prior to the date prior to the Ex-Dividend Time
     with respect to the cash dividend to which this provision is being
     applied), such cash dividend

                                      -74-
<PAGE>
 
     together with each other cash dividend with an Ex-Dividend Time occurring
     in such 365 day period shall be deemed to be an Extraordinary Cash Dividend
     and for purposes of applying the formula set forth above in this Section
     11.8, the value of "F" shall be equal to (y) the aggregate amount of such
     cash dividend together with the amounts of the other cash dividends with
     Ex-Dividend Times occurring in such period minus (z) the aggregate amount
     of such other cash dividends with Ex-Dividend Times occurring in such
     period for which a prior adjustment in the Conversion Rate was previously
     made under this Section 11.8.

In making the determinations required by items (i) and (ii) above, the amount of
cash dividends paid on a per share basis and the average of the Quoted Prices,
in each case during the period specified in item (i) or (ii) above, as
applicable, shall be appropriately adjusted to reflect the occurrence during
such period of any event described in Section 11.6.

          In the event that, with respect to any distribution to which this
Section 11.8 would otherwise apply, the difference "M-F" as defined in the above
formula is less than $1.00 or "F" is equal to or greater than "M", then the
adjustment provided by this Section 11.8 shall not be made and in lieu thereof
the provisions of Section 11.14 shall apply to such distribution.

          SECTION 11.9  When Adjustment May Be Deferred.  No adjustment in the
Conversion Rate need be made unless the adjustment would require an increase or
decrease of at least 1% in the Conversion Rate.  Any adjustments that are not
made shall be carried forward and taken into account in any subsequent
adjustment.

          All calculations under this Article XI shall be made to the nearest
cent or to the nearest 1/1,000th of a share, as the case may be.

          SECTION 11.10  When No Adjustment Required.  No adjustment need be
made for a transaction referred to in Section 11.6, 11.7, 11.8 or 11.14 if
Securityholders are to participate in the transaction on a basis and with notice
that the Board of Directors determines to be fair and appropriate in light of
the basis and notice on which

                                      -75-
<PAGE>
 
holders of Common Stock participate in the transaction.  Such participation by
Securityholders may include participation upon conversion provided that an
adjustment shall be made at such time as the Securityholders are no longer
entitled to participate.

          No adjustment need be made for rights to purchase Common Stock
pursuant to a Company plan for reinvestment of dividends or interest.

          No adjustment need be made for a change in the par value or no par
value of the Common Stock.

          To the extent the Securities become convertible pursuant to this
Article XI into cash, no adjustment need be made thereafter as to the cash.
Interest will not accrue on the cash.

          SECTION 11.11  Notice of Adjustment.  Whenever the Conversion Rate is
adjusted, the Company shall promptly mail to Securityholders a notice of the
adjustment.  The Company shall file with the Trustee and the Conversion Agent
such notice and a certificate from the Company's independent public accountants
briefly stating the facts requiring the adjustment and the manner of computing
it.  The certificate shall be conclusive evidence that the adjustment is
correct.  Neither the Trustee nor any Conversion Agent shall be under any duty
or responsibility with respect to any such certificate except to exhibit the
same to any Holder desiring inspection thereof.

          SECTION 11.12  Voluntary Increase.  The Company from time to time may
increase the Conversion Rate by any amount for any period of time.  Whenever the
Conversion Rate is increased, the Company shall mail to Securityholders and file
with the Trustee and the Conversion Agent a notice of the increase.  The Company
shall mail the notice at least 15 days before the date the increased Conversion
Rate takes effect.  The notice shall state the increased Conversion Rate and the
period it will be in effect.

          A voluntary increase of the Conversion Rate does not change or adjust
the Conversion Rate otherwise in effect for purposes of Section 11.6, 11.7 or
11.8.

                                      -76-
<PAGE>
 
          SECTION 11.13  Notice of Certain Transactions.  If:

               (1)  the Company takes any action that would require an
     adjustment in the Conversion Rate pursuant to Section 11.6, 11.7 or 11.8
     (unless no adjustment is to occur pursuant to Section 11.10); or

               (2)  the Company takes any action that would require a
     supplemental indenture pursuant to Section 11.14; or

               (3)  there is a liquidation or dissolution of the Company;

then the Company shall mail to Securityholders and file with the Trustee and the
Conversion Agent a notice stating the proposed record date for a dividend or
distribution or the proposed effective date of a subdivision, combination,
reclassification, consolidation, merger, binding share exchange, transfer,
liquidation or dissolution.  The Company shall file and mail the notice at least
15 days before such date.  Failure to file or mail the notice or any defect in
it shall not affect the validity of the transaction.

          SECTION 11.14  Reorganization of Company; Special Distributions.  If
the Company is a party to a transaction subject to Section 5.1 (other than a
sale of all or substantially all of the assets of the Company in a transaction
in which the holders of Common Stock immediately prior to such transaction do
not receive securities, cash or other assets of the Company or any other person)
or a merger or binding share exchange which reclassifies or changes its
outstanding Common Stock, the person obligated to deliver securities, cash or
other assets upon conversion of Securities shall enter into a supplemental
indenture.  If the issuer of securities deliverable upon conversion of
Securities is an Affiliate of the successor Company, that issuer shall join in
the supplemental indenture.

          The supplemental indenture shall provide that the Holder of a Security
may convert it into the kind and amount of securities, cash or other assets
which such Holder would have received immediately after the consoli-

                                      -77-
<PAGE>
 
dation, merger, binding share exchange or transfer if such Holder had converted
the Security immediately before the effective date of the transaction, assuming
(to the extent applicable) that such Holder (i) was not a constituent person or
an Affiliate of a constituent person to such transaction; (ii) made no election
with respect to the type or types of consideration such Holder would have
received immediately after such transaction; and (iii) was treated alike with
the plurality of nonelecting Holders.  The supplemental indenture shall provide
for adjustments which shall be as nearly equivalent as may be practical to the
adjustments provided for in this Article XI.  The successor Company shall mail
to Securityholders a notice briefly describing the supplemental indenture.

          If this Section applies, neither Section 11.6 nor Section 11.7
applies.

          If the Company makes a distribution to all holders of its Common Stock
of any of its assets, or debt securities or any rights, warrants or options to
purchase securities of the Company that, but for the provisions of the last
paragraph of Section 11.8, would otherwise result in an adjustment in the
Conversion Rate pursuant to the provisions of Section 11.8, then, from and after
the record date for determining the holders of Common Stock entitled to receive
the distribution, a Holder of a Security that converts such Security in
accordance with the provisions of this Indenture shall upon such conversion be
entitled to receive, in addition to the Common Stock into which the Security is
convertible, the kind and amount of securities, cash or other assets comprising
the distribution that such Holder would have received if such Holder had
converted the Security immediately prior to the record date for determining the
holders of Common Stock entitled to receive the distribution.

          SECTION 11.15  Company Determination Final.  Any determination that
the Company or the Board of Directors must make pursuant to Section 11.3, 11.6,
11.7, 11.8, 11.9, 11.10, 11.14 or 11.17 is conclusive.

          SECTION 11.16  Trustee's Adjustment Disclaimer.  The Trustee has no
duty to determine when an adjustment under this Article XI should be made, how
it should be made or what it should be.  The Trustee has no duty to determine
whether a supplemental indenture under Section

                                      -78-
<PAGE>
 
11.14 need be entered into or whether any provisions of any supplemental
indenture are correct.  The Trustee shall not be accountable for and makes no
representation as to the validity or value of any securities or assets issued
upon conversion of Securities.  The Trustee shall not be responsible for the
Company's failure to comply with this Article XI.  Each Conversion Agent shall
have the same protection under this Section 11.16 as the Trustee.

          SECTION 11.17  Simultaneous Adjustments.  In the event that this
Article XI requires adjustments to the Conversion Rate under more than one of
Sections 11.6(4), 11.7 or 11.8, and the record dates for the distributions
giving rise to such adjustments shall occur on the same date, then such
adjustments shall be made by applying, first, the provisions of Section 11.6,
second, the provisions of Section 11.8 and, third, the provisions of Section
11.7.

          SECTION 11.18  Successive Adjustments.  After an adjustment to the
Conversion Rate under this Article XI, any subsequent event requiring an
adjustment under this Article XI shall cause an adjustment to the Conversion
Rate as so adjusted.

          SECTION 11.19  Rights Issued in Respect of Common Stock Issued Upon
Conversion.  The appropriate number of Rights, if any, shall be issued with each
share of Common Stock issued upon conversion of Securities pursuant to this
Article XI and the certificates representing the Common Stock issued upon such
conversion shall bear such legends, if any, in each case as provided by the
terms of the Rights Agreement, as in effect at the time of such conversion.
Notwithstanding anything else to the contrary in this Article XI, there shall
not be any adjustment to the conversion privilege or Conversion Rate as a result
of (i) the distribution of separate certificates representing the Rights, (ii)
the occurrence of certain events entitling holders of Rights to receive, upon
exercise thereof, Common Stock of the Company or Capital Stock of another
corporation, or (iii) the exercise of such Rights in accordance with the Rights
Agreement.

                                      -79-
<PAGE>
 
                                  ARTICLE XII

                                 MISCELLANEOUS

          SECTION 12.1  Trust Indenture Act Controls.  If any provision of this
Indenture limits, qualifies, or conflicts with another provision which is
required to be included in this Indenture by the TIA, the required provision
shall control.

          SECTION 12.2  Notices.  Any request, demand, authorization, notice,
waiver, consent or communication shall be in writing and delivered in person or
mailed by first-class mail, postage prepaid, addressed as follows or transmitted
by facsimile transmission (confirmed by guaranteed overnight courier) to the
following facsimile numbers:

     if to the Company:

          WMX Technologies, Inc.
          3003 Butterfield Road
          Oak Brook, IL  60521
          Attention: Secretary
          Telecopy:  (708) 218-1553

     if to the Trustee:

          NationsBank of Georgia, National Association
          600 Peachtree Street, N.E., Suite 900
          Atlanta, Georgia  30308
          Attention: Corporate Trust Administration
          Telecopy:  (404) 607-6534

          The Company or the Trustee by notice given to the other in the manner
provided above may designate additional or different addresses for subsequent
notices or communications.

          Any notice or communication given to a Securityholder shall be mailed
to the Securityholder, by first-class mail, postage prepaid, at the
Securityholder's address as it appears on the registration books of the
Registrar and shall be sufficiently given if so mailed within the time
prescribed.

                                      -80-
<PAGE>
 
          Failure to mail a notice or communication to a Securityholder or any
defect in it shall not affect its sufficiency with respect to other
Securityholders.  If a notice or communication is mailed in the manner provided
above, it is duly given, whether or not received by the addressee.

          If the Company mails a notice or communication to the Securityholders,
it shall mail a copy to the Trustee and each Registrar, Paying Agent, Conversion
Agent or co-registrar.

          SECTION 12.3  Communication by Holders with Other Holders.
Securityholders may communicate pursuant to TIA Section 312(b) with other
Securityholders with respect to their rights under this Indenture or the
Securities.  The Company, the Trustee, the Registrar, the Paying Agent, the
Conversion Agent and anyone else shall have the protection of TIA Section
312(c).

          SECTION 12.4  Certificate and Opinion as to Conditions Precedent.
Upon any request or application by the Company to the Trustee to take any action
under this Indenture, the Company shall furnish to the Trustee:

               (1)  an Officers' Certificate stating that, in the opinion of the
     signers, all conditions precedent, if any, provided for in this Indenture
     relating to the proposed action have been complied with; and

               (2)  an Opinion of Counsel stating that, in the opinion of such
     counsel, all such conditions precedent have been complied with.

          SECTION 12.5  Statements Required in Certificate or Opinion.  Each
Officers' Certificate or Opinion of Counsel with respect to compliance with a
covenant or condition provided for in this Indenture shall include:

               (1)  a statement that each person making such Officers'
     Certificate or Opinion of Counsel has read such covenant or condition;

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

                                      -81-
<PAGE>
 
     Officers' Certificate or Opinion of Counsel are based;

               (3)  a statement that, in the opinion of each such person, he 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 that, in the opinion of such person, such
     covenant or condition has been complied with.

          SECTION 12.6  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 12.7 Rules by Trustee, Paying Agent, Conversion Agent and
Registrar. The Trustee may make reasonable rules for action by or a meeting of
Securityholders. The Registrar, Conversion Agent and the Paying Agent may make
reasonable rules for their functions.

          SECTION 12.8 GOVERNING LAW. THIS INDENTURE AND THE SECURITIES SHALL BE
GOVERNED BY THE LAWS OF THE STATE OF ILLINOIS AS APPLIED TO CONTRACTS MADE AND
PERFORMED WITHIN THE STATE OF ILLINOIS, WITHOUT REGARD TO PRINCIPLES OF
CONFLICTS OF LAWS.

          SECTION 12.9 No Recourse Against Others. A director, officer, employee
or stockholder, as such, of the Company shall not have any liability for any
obligations of the Company under the Securities or this Indenture or for any
claim based on, in respect of or by reason of such obligations or their
creation. By accepting a Security, each Securityholder shall waive and release
all such liability. The waiver and release shall be part of the consideration
for the issue of the Securities.

                                      -82-
<PAGE>
 
          SECTION 12.10 Successors. All agreements of the Company in this
Indenture and the Securities shall bind its successor. All agreements of the
Trustee in this Indenture shall bind its successor.

          SECTION 12.11 Multiple Originals. The parties may sign any number of
copies of this Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement. One signed copy is enough to prove this
Indenture.

                                      -83-
<PAGE>
 
          IN WITNESS WHEREOF, the undersigned, being duly authorized, have
executed this Indenture on behalf of the respective parties hereto as of the
date first above written.

                                       WMX TECHNOLOGIES, INC.



                                       By
                                         -------------------------------------
                                       Title:



Attest:


- --------------------------------------- 
Title:

[SEAL]



                                       NATIONSBANK OF GEORGIA,
                                         NATIONAL ASSOCIATION


                                       By
                                         -------------------------------------
                                         Title:



Attest:


- --------------------------------------- 
Title:

[SEAL]

                                      -84-
<PAGE>
 
                                   EXHIBIT A

                           [FORM OF FACE OF SECURITY]


                             WMX TECHNOLOGIES, INC.

                     Convertible Subordinated Note due 2005



 
No.                                     Interest Payment Dates:
Issue Date:  January 20, 1995             January 20 and July 20
Stated Issue Price:  $717.80            Record Dates:
Stated Discount:  $282.20                 January 5 and July 5
(in each case, for each $1,000
Principal Amount at Maturity)



          WMX TECHNOLOGIES, INC., a Delaware corporation, promises to pay to
__________ or registered assigns, the Principal Amount at Maturity of __________
Dollars on January 20, 2005.

          This Security shall bear interest as specified on the other side of
this Security.  Stated Discount will accrue as specified on the other side of
this Security.  This Security is convertible as specified on the other side of
this Security.

          Additional provisions of this Security are set forth on the other side
of this Security.

                                       WMX TECHNOLOGIES, INC.


[SEAL]                                 By
                                         -------------------------------------
                                         Title


Attest:

- -------------------------------------- 
Title:

                                      A-1
<PAGE>
 
TRUSTEE'S CERTIFICATE OF
  AUTHENTICATION

NATIONSBANK OF GEORGIA,
  NATIONAL ASSOCIATION
as Trustee, certifies that this
is one of the Securities referred
to in the Indenture.



By
   ------------------------------
   Authorized Signatory


Dated:
       --------------------------------

                                      A-2
<PAGE>
 
                       [FORM OF REVERSE SIDE OF SECURITY]

                     Convertible Subordinated Note Due 2005


1.   Interest.

          WMX Technologies, Inc. (the "Company") promises to pay interest on the
Principal Amount at Maturity of this Security at a rate of 2% per annum.  The
Company will pay such interest semi-annually on January 20 and July 20 of each
year.  Interest on the Security will accrue from the most recent date to which
interest has been paid or, if no interest has been paid, from January 20, 1995.
Interest will be computed on the basis of a 360-day year composed of twelve 30-
day months.  If the Principal Amount at Maturity or any interest payment hereof
or any portion of such Principal Amount at Maturity or interest payment is not
paid when due (whether upon acceleration pursuant to Section 6.2 of the
Indenture, upon the date set for payment of the Redemption Price pursuant to
paragraph 5 hereof, upon the date set for payment of the Purchase Price or
Change in Control Purchase Price pursuant to paragraph 6 hereof or upon the
Stated Maturity of this Security), or if cash in respect of a conversion of this
Security in accordance with the terms of Article XI of the Indenture is not paid
when due, then in each such case the overdue amount shall, to the extent
permitted by law, bear interest at the rate of 6.75% per annum, compounded
semiannually, which interest shall accrue from the date such overdue amount was
originally due to the date payment of such amount, including interest thereon,
has been made or duly provided for.  All such interest shall be payable on
demand.

          Stated Discount (the difference between the Stated Issue Price and the
Principal Amount at Maturity of the Security), in the period during which a
Security remains outstanding, together with interest payable on the Principal
Amount at Maturity of this Security, shall accrue at 5.75% per annum, on a semi-
annual bond equivalent basis using a 360-day year composed of twelve 30-day
months, from the Issue Date of this Security.

                                      A-3
<PAGE>
 
2.   Method of Payment.

          Subject to the terms and conditions of the Indenture, the Company will
pay interest on the Security provided for in paragraph 1 above (except defaulted
interest) to Holders of Securities at the close of business on the January 5 or
July 5 next preceding the interest payment date even though Securities are
cancelled after the record date and on or before the interest payment date.
Subject to the terms and conditions of the Indenture, the Company will make
payments in respect of interest, Redemption Prices, Purchase Prices, Change in
Control Purchase Prices and at Stated Maturity to Holders who surrender
Securities to a Paying Agent appointed to collect such payments in respect of
the Securities.  The Company will pay cash amounts in money of the United States
that at the time of payment is legal tender for payment of public and private
debts.  However, the Company may make such cash payments by check payable in
such money.

3.   Paying Agent, Conversion Agent and Registrar.

          Initially, NationsBank of Georgia, National Association (the 
"Trustee"), will act as Paying Agent, Conversion Agent and Registrar.  The 
Company may appoint and change any Paying Agent, Conversion Agent, Registrar or
co-registrar without notice, other than notice to the Trustee, except that the 
Company will maintain at least one office or agency of the Paying Agent, 
Conversion Agent and Registrar in the Borough of Manhattan, the City of New 
York.  The Company or any of its Subsidiaries or any of their Affiliates may 
act as Paying Agent, Conversion Agent, Registrar or co-registrar.

4.   Indenture.

          The Company issued the Securities under an Indenture dated as of
January 20, 1995 (the "Indenture"), between the Company and the Trustee.  The
terms of the Securities include those stated in the Indenture and those made
part of the Indenture by reference to the Trust Indenture Act of 1939 (the
"TIA").  Capitalized terms used herein and not defined herein have the meanings
ascribed thereto in the Indenture.  The Securities are subject to all such
terms, and Securityholders are

                                      A-4
<PAGE>
 
referred to the Indenture and the TIA for a statement of those terms.

          The Securities are general unsecured obligations of the Company
limited to $810,000,000 aggregate Principal Amount at Maturity (subject to
Sections 2.2 and 2.7 of the Indenture).  The Indenture does not limit other Debt
of the Company, secured or unsecured, including Senior Indebtedness.

5.   Redemption at the Option of the Company.

          No sinking fund is provided for the Securities.  The Securities are
redeemable as a whole, or from time to time in part, at any time at the option
of the Company at the Redemption Prices set forth below plus accrued but unpaid
interest to the Redemption Date, provided, that the Securities are not
redeemable prior to March 15, 2000.

          The table below shows Redemption Prices of a Security per $1,000
Principal Amount at Maturity on the dates shown below and at Stated Maturity,
which prices reflect accrued Stated Discount calculated to each such date.  The
Redemption Price of a Security redeemed between such dates shall include an
additional amount reflecting the additional Stated Discount accrued from the
immediately preceding date in the table to the actual Redemption Date.  The
Company shall also pay accrued but unpaid interest to the actual Redemption
Date.
<TABLE>
<CAPTION>
 
                          (1)         (2)          (3)
                                    Accrued     Redemption
                        Stated       Stated       Price
Redemption Date       Issue Price   Discount    (1) + (2)
- ---------------       -----------   --------    ----------
<S>                   <C>           <C>         <C>
March 15, 2000           717.80      125.55        843.35
March 15, 2001           717.80      154.45        872.25
March 15, 2002           717.80      185.04        902.84
March 15, 2003           717.80      217.41        935.21
March 15, 2004           717.80      251.67        969.47
 
At Stated Maturity       717.80      282.20      1,000.00
</TABLE>

                                      A-5
<PAGE>
 
6.   Purchase by the Company at the Option of the Holder or upon a Change in
     Control.

          Subject to the terms and conditions of the Indenture, the Company
shall become obligated to purchase, at the option of the Holder, the Securities
held by such Holder on the following Purchase Dates and at the following
Purchase Prices per $1,000 Principal Amount at Maturity, together with accrued
but unpaid interest to the Purchase Date, following delivery by the Holder of a
Purchase Notice in the form attached hereto, at any time from the opening of
business on the date that is 20 Business Days prior to such Purchase Date until
the close of business on such Purchase Date and following delivery of the
Securities to the Paying Agent by the Holder as set forth in the Indenture.  The
Company shall purchase a portion of a Holder's Security, at such Holder's
option, if the Principal Amount at Maturity of such portion is $1,000 or an
integral multiple of $1,000.

Purchase Date                      Purchase Price
- -------------                      --------------

March 15, 1998                     $790.24
March 15, 2000                      843.35

          At the option of the Holder and subject to the terms and conditions of
the Indenture, the Company shall become obligated to purchase the Securities
held by such Holder 35 Business Days after the occurrence of a Change in Control
of the Company occurring on or prior to March 15, 1998 for a Change in Control
Purchase Price equal to the Stated Issue Price plus accrued Stated Discount to
the Change in Control Purchase Date, together with accrued but unpaid interest
to the Change in Control Purchase Date.

          Holders have the right to withdraw any Purchase Notice or Change in
Control Purchase Notice, as the case may be, by delivering to the Paying Agent a
written notice of withdrawal in accordance with the provisions of the Indenture
prior to the close of business on the Purchase Date or Change in Control
Purchase Date, as the case may be.

          If cash sufficient to pay the Purchase Price or Change in Control
Purchase Price, as the case may be, plus accrued but unpaid interest to the
Purchase Date or

                                      A-6
<PAGE>
 
Change in Control Purchase Date, as the case may be, of all Securities or
portions thereof to be purchased as of the Purchase Date or the Change in
Control Purchase Date, as the case may be, is deposited with the Paying Agent on
the Business Day following the Purchase Date or the Change in Control Purchase
Date, as the case may be, Stated Discount and interest will cease to accrue on
such Securities (or portions thereof) on such Purchase Date or Change in Control
Purchase Date, as the case may be, and the Holder thereof shall have no other
rights as such (other than the right to receive the Purchase Price or Change in
Control Purchase Price, as the case may be, plus accrued but unpaid interest to
the Purchase Date or Change in Control Purchase Date upon surrender of such
Security).

7.  Notice of Redemption.

          At least 30 days but not more than 60 days before the Redemption Date,
the Company shall mail a notice of redemption by first-class mail, postage pre-
paid, to each Holder of Securities to be redeemed at the Holder's registered
address.  If cash sufficient to pay the Redemption Price plus accrued but unpaid
interest to the Redemption Date of all Securities (or portions thereof) to be
redeemed on the Redemption Date is deposited with the Paying Agent prior to or
on the Redemption Date, Stated Discount and interest will cease to accrue on
such Redemption Date on such Securities or portions thereof, and the Holder
thereof shall have no other rights as such (other than the right to receive the
Redemption Price plus accrued but unpaid interest to the Redemption Date upon
surrender of the Security).  Securities in denominations larger than $1,000 of
Principal Amount at Maturity may be redeemed in part but only in integral
multiples of $1,000 of Principal Amount at Maturity.

8.  Subordination.

          The Securities are subordinated to all existing and future Senior
Indebtedness.  To the extent provided in the Indenture, Senior Indebtedness must
be paid before the Securities may be paid.  The Indenture does not limit the
present or future amount of Senior Indebtedness the Company may have.  The
Company agrees, and each Securityholder by accepting a Security agrees, to the
subordination and authorizes the Trustee to give it

                                      A-7
<PAGE>
 
effect and appoints the Trustee as attorney-in-fact for such purpose.

9.  Conversion.

          Subject to the first, second and fourth succeeding sentences, a Holder
of a Security may convert it into Common Stock of the Company at any time before
the close of business on January 20, 2005.  If the Security is called for
redemption, the Holder may convert it at any time before the close of business
on the Redemption Date.  A Security in respect of which a Holder has delivered a
Purchase Notice or Change in Control Purchase Notice exercising the option of
such Holder to require the Company to purchase such Security may be converted
only if such notice of exercise is withdrawn in accordance with the terms of the
Indenture.  The number of shares of Common Stock to be delivered upon conversion
of a Security into Common Stock per $1,000 of Principal Amount at Maturity shall
be equal to the Conversion Rate in effect on the Conversion Date.  Subject to
the terms of the Indenture, the Holder's right to convert Securities into Common
Stock is subject to the Company's right to elect to pay a Holder surrendering a
Security pursuant to Article XI of the Indenture an amount of cash as set forth
in the next succeeding sentence, in lieu of delivering such shares of Common
Stock; provided that if such payment is not permitted pursuant to the terms of
the Indenture or otherwise, the Company shall deliver shares of Common Stock
(and cash in lieu of fractional shares) upon conversion of Securities.  The
amount of cash to be paid in lieu of shares of Common Stock pursuant to such
election by the Company per $1,000 of Principal Amount at Maturity of a Security
upon conversion of such Security shall be equal to the Sale Price of a share of
Common Stock on the Business Day immediately preceding the Conversion Date
multiplied by the Conversion Rate in effect on the Conversion Date, subject to
adjustment upon the occurrence of certain events.

          The initial Conversion Rate is ___ shares of Common Stock per $1,000
Principal Amount at Maturity, subject to adjustment in certain events described
in the Indenture.  The Company shall deliver cash in lieu of any fractional
shares of Common Stock in an amount equal to the Sale Price of a share of Common
Stock on the Business Day immediately preceding the Conversion Date, multiplied

                                      A-8
<PAGE>
 
by the fraction of a share to which such Holder would have been entitled.

          To convert a Security, a Holder must (1) complete and manually sign
the conversion notice below (or complete and manually sign a facsimile of such
notice) and deliver such notice to the Conversion Agent, (2) surrender the
Security to the Conversion Agent, (3) furnish appropriate endorsements and
transfer documents if required by the Conversion Agent, the Company or the
Trustee and (4) pay any transfer or similar tax, if required.

          If the Holder converts more than one Security at the same time, the
number of shares of Common Stock issuable upon the conversion shall be based on
the total Principal Amount at Maturity of the Securities converted.

          A Holder may convert a portion of a Security if the Principal Amount
at Maturity of such portion is $1,000 or an integral multiple of $1,000.  No
payment or adjustment will be made for dividends or other distributions on the
Common Stock except as provided in the Indenture.  On conversion of a Security,
that portion of accrued Stated Discount (and accrued Original Issue Discount)
attributable to the period from the Issue Date to the Conversion Date and that
portion of accrued but unpaid interest attributable to the period from the most
recent interest payment date to the Conversion Date with respect to the
converted Security shall not be cancelled, extinguished or forfeited, but rather
shall be deemed to be paid in full to the Holder thereof through the delivery of
the Common Stock (together with the cash payment, if any, in lieu of fractional
shares of Common Stock) or of cash, as the case may be, in exchange for the
Security being converted pursuant to the terms hereof; and the fair market value
of such Common Stock (together with any such cash payment in lieu of fractional
shares of Common Stock) or cash, as the case may be, shall be treated as issued
or paid, to the extent thereof, first in exchange for accrued Stated Discount
(and accrued Original Issue Discount) to the Conversion Date and the interest
accrued from the most recent interest payment date to the Conversion Date, and
the balance, if any, of such fair market value of such shares of Common Stock
(and any such cash payment) or cash, as the case may be, shall be treated as
issued or paid in exchange for the Stated

                                      A-9
<PAGE>
 
Issue Price and Issue Price of the Security being converted pursuant to the
provisions hereof.

          Pursuant to Article XI of the Indenture, the Conversion Rate will be
adjusted for dividends or distributions on Common Stock payable in shares of
Common Stock or other Capital Stock; subdivisions, combinations or certain
reclassifications of Common Stock; distributions to all holders of Common Stock
of certain rights to purchase shares of Common Stock for a period expiring
within 60 days at less than the Quoted Price at the Time of Determination; and
distributions to such holders of assets or debt securities of the Company or
certain rights to purchase securities of the Company (excluding certain cash
dividends or distributions).  However, no adjustment need be made if
Securityholders may participate in the transaction or in certain other cases.
The Company from time to time may voluntarily increase the Conversion Rate.

          If the Company is a party to a consolidation, merger or binding share
exchange or a transfer of all or substantially all of its assets, or upon
certain distributions described in the Indenture, the right to convert a
Security into Common Stock may be changed into a right to convert it into
securities, cash or other assets of the Company or another person.

10.  Conversion Arrangement on Call for Redemption.

          Any Securities called for redemption, unless surrendered for
conversion before the close of business on the Redemption Date, may be deemed to
be purchased from the Holders of such Securities at an amount not less than the
Redemption Price, together with accrued interest to the Redemption Date, by one
or more investment bankers or other purchasers who may agree with the Company to
purchase such Securities from the Holders, to convert them into Common Stock of
the Company and to make payment for such Securities to the Paying Agent in trust
for such Holders.

11.  Denominations; Transfer; Exchange.

          The Securities are in fully registered form, without coupons, in
denominations of $1,000 of Principal Amount at Maturity and integral multiples
of $1,000.  A

                                      A-10
<PAGE>
 
Holder may transfer or exchange Securities in accordance with the Indenture.
The Registrar may require a Holder, among other things, to furnish appropriate
endorsements and transfer documents and to pay any taxes and fees required by
law or permitted by the Indenture.  The Registrar need not transfer or exchange
any Securities selected for redemption (except, in the case of a Security to be
redeemed in part, the portion of the Security not to be redeemed) or any
Securities in respect of which a Purchase Notice or Change in Control Purchase
Notice has been given and not withdrawn (except, in the case of a Security to be
purchased in part, the portion of the Security not to be purchased) or any
Securities for a period of 15 days before a selection of Securities to be
redeemed.

12.  Persons Deemed Owners.

          The registered Holder of this Security may be treated as the owner of
this Security for all purposes.

13.  Unclaimed Money or Securities.

          The Trustee and the Paying Agent shall return to the Company upon
written request any money or securities held by them for the payment of any
amount with respect to the Securities that remains unclaimed for two years,
provided, however, that the Trustee or such Paying Agent, before being required
to make any such return, may at the expense of the Company cause to be published
once in a newspaper of general circulation in The City of New York or mail to
each Holder entitled to the money or securities notice that such money or
securities remain unclaimed and that, after a date specified therein, which
shall not be less than 30 days from the date of such publication or mailing, any
unclaimed money or securities then remaining will be returned to the Company.
After return to the Company, Holders entitled to the money or securities must
look to the Company for payment as general creditors unless an applicable
abandoned property law designates another person.

14.  Amendment; Waiver.

          Subject to certain exceptions set forth in the Indenture, (i) the
Indenture or the Securities may be amended with the written consent of the
Holders of at

                                      A-11
<PAGE>
 
least a majority in aggregate Principal Amount at Maturity of the Securities at
the time outstanding and (ii) certain Defaults may be waived with the written
consent of the Holders of a majority in aggregate Principal Amount at Maturity
of the Securities at the time outstanding.  Subject to certain exceptions set
forth in the Indenture, without the consent of any Securityholder, the Company
and the Trustee may amend the Indenture or the Securities to cure any ambiguity,
omission, defect or inconsistency, to comply with Article V or Section 11.14 of
the Indenture, to provide for uncertificated Securities in addition to or in
place of certificated Securities or to make any change that does not adversely
affect the rights of any Securityholder, or to comply with any requirement of
the SEC in connection with the qualification of the Indenture under the TIA.

15.  Defaults and Remedies.

          Under the Indenture, Events of Default include (i) default in payment
of interest, the Principal Amount at Maturity, Redemption Price, Purchase Price
or Change in Control Purchase Price or in the payment of cash or delivery of
Common Stock upon conversions, as the case may be, in respect of the Securities
when the same becomes due and payable; (ii) failure by the Company to comply
with other agreements in the Indenture or the Securities, subject to notice and
lapse of time; and (iii) certain events of bankruptcy or insolvency.  If an
Event of Default occurs and is continuing, the Trustee, or the Holders of at
least 25% in aggregate Principal Amount at Maturity of the Securities at the
time outstanding, may declare all the Securities to be due and payable
immediately.  Certain events of bankruptcy or insolvency are Events of Default
which will result in the Securities becoming due and payable immediately upon
the occurrence of such Events of Default.

          Securityholders may not enforce the Indenture or the Securities except
as provided in the Indenture.  The Trustee may refuse to enforce the Indenture
or the Securities unless it receives reasonable indemnity or security.  Subject
to certain limitations, Holders of a majority in aggregate Principal Amount at
Maturity of the Securities at the time outstanding may direct the Trustee in its
exercise of any trust or power.  The Trustee may withhold from Securityholders
notice of any continuing

                                      A-12
<PAGE>
 
Default (except a Default in payment of amounts specified in clause (i) above)
if it determines that withholding notice is in their interests.

16.  Trustee Dealings with the Company.

          Subject to certain limitations imposed by the TIA, the Trustee under
the Indenture, in its individual or any other capacity, may become the owner or
pledgee of Securities and may otherwise deal with and collect obligations owed
to it by the Company or its Affiliates and may otherwise deal with the Company
or its Affiliates with the same rights it would have if it were not Trustee.

17.  No Recourse Against Others.

          A director, officer, employee or stockholder, as such, of the Company
shall not have any liability for any obligations of the Company under the
Securities or the Indenture or for any claim based on, in respect of or by
reason of such obligations or their creation.  By accepting a Security, each
Securityholder waives and releases all such liability.  The waiver and release
are part of the consideration for the issue of the Securities.

18.  Authentication.

          This Security shall not be valid until an authorized signatory of the
Trustee manually signs the Trustee's Certificate of Authentication on the other
side of this Security.

19.  Abbreviations.

          Customary abbreviations may be used in the name of a Securityholder or
an assignee, such as TEN COM (=tenants in common), TEN ENT (=tenants by the
entireties), JT TEN (=joint tenants with right of survivorship and not as
tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors
Act).

20.  GOVERNING LAW.

          THIS INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY THE LAWS OF THE
STATE OF ILLINOIS AS APPLIED

                                      A-13
<PAGE>
 
TO CONTRACTS MADE AND PERFORMED WITHIN THE STATE OF ILLINOIS, WITHOUT REGARD TO
PRINCIPLES OF CONFLICTS OF LAWS.

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

          The Company will furnish to any Securityholder upon written request
and without charge a copy of the Indenture which has in it the text of this
Security in larger type.  Requests may be made to:

       WMX Technologies, Inc.
       3003 Butterfield Road
       Oak Brook, IL  60521
       Attention:  Secretary

                                      A-14
<PAGE>
 
                    ASSIGNMENT FORM                        

To assign this Security, fill in the form below:


I or we assign and transfer this Security to

                           -----------------------
                           :                     :
                           -----------------------

                  (Insert assignee's soc. sec. or tax ID no.)


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

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

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

- -------------------------------------------------------------------------------
             (Print or type assignee's name, address and zip code)

and irrevocably appoint ________________________ agent to transfer this Security
on the books of the Company. The agent may substitute another to act for him.


                               CONVERSION NOTICE

To convert this Security into Common Stock of the Company, check the box:

                                    ----
                                    :  :
                                    :  :
                                    ----

To convert only part of this Security, state the Principal Amount at Maturity to
be converted (which must be $1,000 or an integral multiple of $1,000):

                            ---------------------
                            :$                  :
                            ---------------------

If you want the stock certificate made out in another person's name, fill in the
form below:

                            ---------------------
                            :                   :
                            ---------------------

                (Insert other person's soc. sec. or tax ID no.)


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

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

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

- -------------------------------------------------------------------------------
           (Print or type other person's name, address and zip code)



Date:                                  Your Signature:
     -------------------------                         -----------------------

- -------------------------------------------------------------------------------
    (Sign exactly as your name appears on the other side of this Security)


                                      A-15
<PAGE>
 
                       OPTION OF HOLDER TO ELECT PURCHASE

          If you wish to have this Security purchased by the Company pursuant to
paragraph 6 of the Security check the Box:  [ ].

          If you wish to have a portion of this Security purchased by the
Company pursuant to paragraph 6 of the Security, state the Principal Amount at
Maturity to be purchased (which must be $1,000 or an integral multiple of
$1,000):


                               $_______________.


Date:  _______________

Your Signature:  ________________________________________________

(Sign exactly as your name appears on the other side of this Security)

Signature Guarantee:  ___________________________________________

                                      A-16

<PAGE>
 
                      [LETTERHEAD OF BELL, BOYD & LLOYD]

                                                                       Exhibit 5

                               December 15, 1994

WMX Technologies, Inc.
3003 Butterfield Road
Oak Brook, Illinois 60521

                       $550,000,000 Principal Amount of
                  Convertible, Subordinated Notes due 2005

Ladies and Gentlemen:

     We have acted as counsel to WMX Technologies, Inc., a Delaware corporation
(the "Company"), in connection with the preparation and filing with the
Securities and Exchange Commission under the Securities Act of 1933 of a
registration statement on Form S-4 ("Registration Statement") relating to up to
$550,000,000 aggregate principal amount at maturity of Convertible, Subordinated
Notes due 2005 ("Notes") to be issued in connection with the merger of a wholly
owned subsidiary of the Company into Chemical Waste Management, Inc., a Delaware
corporation, pursuant to which Chemical Waste Management, Inc. will become a
wholly owned subsidiary of the Company, and the shares of the Company's Common
Stock, $1.00 par value ("Common Stock"), issuable upon conversion of the Notes.
In this connection, we have examined such corporate and other records,
instruments, certificates and documents as we considered necessary to enable us
to express this opinion.

     Based on the foregoing, it is our opinion as follows:

     1.  The Company is a corporation duly incorporated in and validly existing 
under the laws of the State of Delaware.

     2.  The Company has taken all action necessary to authorize the execution 
and delivery of the Indenture relating to the Notes and the issuance of the 
Notes upon the terms and conditions set forth in the Merger Agreement.

     3.  Upon the execution and delivery of the Indenture by the respective 
parties and the execution, authentication and delivery of the Notes in 
accordance with the terms and conditions of the Merger Agreement, the Notes will
be valid and legally binding obligations of the Company, enforceable in 
accordance

<PAGE>
 
WMX Technologies, Inc.
December 15, 1994
Page 2

with their terms, except as such enforcement may be limited by bankruptcy,
insolvency or other laws affecting the enforcement of creditors' rights
generally and by general equitable principles, and entitled to the benefits of
the Indenture.

     4.  The Common Stock initially issuable upon conversion of the Notes has
been duly authorized and when such Common Stock is issued upon conversion of the
Notes, it will be legally issued, fully paid and non-assessable.

     We consent to the filing of this opinion as an exhibit to the Registration
Statement and to the reference to us under the caption "Legal Matters." In
giving this consent, we do not admit that we are within the category of persons
whose consent is required by Section 7 of the Securities Act of 1933.

                                       Very truly yours,

                                       /s/ Bell, Boyd & Lloyd
          





<PAGE>
 
                      [LETTERHEAD OF BELL, BOYD & LLOYD]

                                                                       Exhibit 8

                               December 15, 1994

WMX Technologies, Inc.
3003 Butterfield Road
Oak Brook, Illinois 60521

Gentlemen:

     We have acted as counsel to WMX Technologies, Inc., a Delaware corporation
(the "Company"), in connection with the registration under the Securities Act of
1933 of the Company's convertible, subordinated Notes due 2005 in the aggregate
principal amount of up to $550,000,000 (the "Notes"). In this connection, we
have examined the registration statement on Form S-4 (the "Registration
Statement"), including the proxy statement-prospectus which forms a part of the
Registration Statement (the "Prospectus"), and such other documents and papers,
and we have considered such questions of law, as we considered necessary for
purposes of this opinion.

     Based on the foregoing, it is our opinion that the description of Federal
income tax consequences included in the Prospectus under the heading "Certain
Tax Considerations" accurately sets forth the Federal income tax consequences
under existing law of the issuance, ownership, disposition and conversion of the
Notes to which it refers.

     We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement. In giving this consent we do not admit that we are
within the category of persons whose consent is required by Section 7 of the
Securities Act of 1933.

                                       Very truly yours,
                                       

                                       /s/ Bell, Boyd & Lloyd


<PAGE>
 
                                                                    EXHIBIT 23.2
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
  As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement on Form S-4 of our reports dated
February 16, 1994 included (or incorporated by reference) in the WMX
Technologies, Inc. Form 10-K for the year ended December 31, 1993 and our
reports dated February 7, 1994 included (or incorporated by reference) in the
Chemical Waste Management, Inc. Form 10-K for the year ended December 31, 1993,
and to all references to our firm included in this registration statement.
 
                                          /s/ Arthur Andersen LLP
 
                                          ARTHUR ANDERSEN LLP
 
Chicago, Illinois
December 16, 1994

<PAGE>
 
                                                                    EXHIBIT 23.3
 
                                    CONSENT
                                       OF
                          CS FIRST BOSTON CORPORATION

  We hereby consent to the inclusion of (i) our opinion letter to the Special
Committee of the Board of Directors of Chemical Waste Management, Inc. ("CWM")
as Appendix B to the Joint Proxy Statement-Prospectus of CWM and WMX
Technologies, Inc. (the "Company") relating to the proposed merger of WMX
Merger Sub, a wholly owned subsidiary of the Company, with and into CWM and
(ii) references made to our firm and such opinion in such Joint Proxy
Statement-Prospectus under the captions "SUMMARY--Opinion of CWM's Financial
Advisor" and "SPECIAL FACTORS--Background of the Merger," "--Recommendation of
the Special Committee and the Board of Directors of CWM; Fairness of the
Merger" and "--Opinion of CWM's Financial Advisor." In giving such consent, we
do not admit that we come within the category of persons whose consent is
required under, and we do not admit and we disclaim that we are "experts" for
purposes of, the Securities Act of 1933, as amended, and the rules and
regulations promulgated thereunder.  
 
                                            /s/ CS First Boston Corporation
                                          By: _________________________________
                                              CS FIRST BOSTON CORPORATION
 
New York, New York
December 16, 1994

<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                _______________
                                
                                   FORM T-1
                      STATEMENT OF ELIGIBILITY UNDER THE
                                
                 TRUST INDENTURE ACT OF 1939 OF A CORPORATION
                                
                         DESIGNATED TO ACT AS TRUSTEE
                                _______________
                                
         CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE
                                
                         PURSUANT TO SECTION 305(b)(2)
                                _______________
                                
                 NATIONSBANK OF GEORGIA, NATIONAL ASSOCIATION
              (Exact name of trustee as specified in its charter)
                                
                                  58-0193243
                     (I.R.S. employer identification no.)

       600 Peachtree Street, N.E.
       Suite 900
       Atlanta, Georgia                                   30308
       (Address of principal executive offices)         (Zip Code)
                                                       
                         _____________________________
                                
                               John T. Henderson
                 NationsBank of Georgia, National Association
                              Area Administration
                              6000 Feldwood Road
                         College Park, Georgia  30349
                                (404) 774-6074
           (Name, Address and telephone number of agent for service)
                                _______________
                                
                                with a copy to:
                 NationsBank of Georgia, National Association
                                Corporate Trust
                        600 Peachtree Street, Suite 900
                               Atlanta, GA 30308
                           ________________________
                                
                            WMX TECHNOLOGIES, INC.
              (Exact name of obligor as specified in its charter)

                Delaware                            36-2660763
       (State or other jurisdiction               (IRS employer
       of incorporation or organization)          identification no.)


                             3003 Butterfield Road
                          Oak Brook, Illinois  60521
                                (708) 572-8800
                                
   (Address, including zip code, and telephone number, including area code,
                        of principal executive office)
                  __________________________________________
                                
                        Convertible Subordinated Notes
                      (Title of the indenture securities)
       _________________________________________________________________
<PAGE>
 
1.   General information.

     Furnish the following information as to the trustee--

     (a)  Name and address of each examining or supervising
          authority to which it is subject.

          The Comptroller of the Currency,
          Washington, D.C.

          Federal Reserve Bank of Atlanta
          104 Marietta Street, N.W.
          Atlanta, Georgia

          Federal Deposit Insurance Corporation
          Washington, D.C.

     (b)  Whether it is authorized to exercise corporate trust
          powers.

          Yes.

2.   Affiliations with obligor.

     If the obligor is an affiliate of the trustee, describe each
     such affiliation.

          None.

16.  List of Exhibits.

     List below all exhibits filed as a part of this statement of
     eligibility.

     (1)  A copy of the Articles of Association of the trustee as
          now in effect.  (See Exhibit 1 to Form T-1, Exhibit 25
          to Registration No. 33-50233, which is incorporated
          herein by reference.)

     (2)  A copy of the certificate of authority of the trustee
          to commence business.

     (3)  A copy of the authorization of the trustee to exercise
          corporate trust powers.

     (4)  A copy of the existing by-laws of the trustee, as
          amended to date.  (See Exhibit 4 to Form T-1, Exhibit
          25 to Registration No. 33-50233, which is incorporated
          herein by reference.)

     (6)  The consent of the trustee required by Section 321(b)
          of the Trust Indenture Act of 1939.

     (7)  A copy of the latest report of condition of the trustee
          published pursuant to law or the requirements of its
          supervising or examining authority.
<PAGE>
 
                                   SIGNATURE


     Pursuant to the requirements of the Trust Indenture Act of 1939 the
trustee, NationsBank of Georgia, National Association, a corporation organized
and existing under the laws of the United States of America, has duly caused
this statement of eligibility and qualification to be signed on its behalf by
the undersigned, thereunto duly authorized, all in the City of Atlanta and the
State of Georgia, on the 1st day of December, 1994.

                                  NATIONSBANK OF GEORGIA,
                                   NATIONAL ASSOCIATION

  
                                  By: /s/ Sandra Carreker
                                      -------------------
                                          Sandra Carreker
                                          Vice President
<PAGE>
 
                             EXHIBIT 6 TO FORM T-1

                              CONSENT OF TRUSTEE


     Pursuant to the requirements of Section 321(b) of the Trust Indenture Act
of 1939 in connection with the proposed issuance of WMX Technologies, Inc.
Convertible Subordinated Notes, NationsBank of Georgia, National Association
hereby consents that reports of examinations by Federal, State, Territorial or
District Authorities may be furnished by such authorities to the Securities and
Exchange Commission upon request therefor.


                              NATIONSBANK OF GEORGIA,
                               NATIONAL ASSOCIATION


                              By: /s/ Sandra Carreker
                                  -------------------
                                      Sandra Carreker
                                      Vice President
<PAGE>
 
                             EXHIBIT 2 TO FORM T-1

____________________________________________________________
Comptroller of the Currency
Administrator of National Banks
____________________________________________________________
Washington, D.C.  20219


                                  CERTIFICATE


I, Eugene A. Ludwig, Comptroller of the Currency, do hereby certify that:

1.  The Comptroller of the Currency, pursuant to Revised Statutes 324, et seq.,
as amended, 12 U.S.C. 1, et seq., as amended, has possession, custody and
control of all records pertaining to the chartering, regulation and supervision
of all National Banking Associations.

2.  "NationsBank of Georgia, National Association", Atlanta, Georgia, (Charter
No. 13068), a National Banking Association formed under the laws of the United
States and is authorized thereunder to transact the business of banking on the
date of this Certificate.

                         IN TESTIMONY WHEREOF, I have

                         hereunto subscribed my name

                         and caused my seal of office

                         to be affixed to these presents

                         at the Treasury Department, in

                         the City of Washington and District

                         of Columbia, this 27th day of

                         October, 1994.



                              /s/ Eugene A. Ludwig
                              ---------------------------
                              Comptroller of the Currency
                                
<PAGE>
 
                             EXHIBIT 3 TO FORM T-1
                                
____________________________________________________________
Comptroller of the Currency
Administrator of National Banks
____________________________________________________________
Washington, D.C.  20219


                       Certification of Fiduciary Powers
                                


I, Eugene A. Ludwig, Comptroller of the Currency, do hereby certify the records
in this Office evidence "NationsBank of Georgia, National Association", Atlanta,
Georgia, (Charter No. 13068), was granted, under the hand and seal of the
Comptroller, the right to act in all fiduciary capacities authorized under the
provisions of The Act of Congress approved September 28, 1962, 76 Stat. 668, 12
U.S.C. 92a. I further certify the authority so granted remains in full force and
effect.


                         IN TESTIMONY WHEREOF, I have

                         hereunto subscribed my name

                         and caused my seal of Office

                         of the Comptroller of the

                         Currency to be affixed to these

                         presents at the Treasury

                         Department, in the City of

                         Washington and District of

                         Columbia, this 27th day of

                         October, 1994.


                              /s/ Eugene A. Ludwig
                              --------------------------- 
                              Comptroller of the Currency
<PAGE>
 
                             EXHIBIT 7 TO FORM T-1

Comptroller of the Currency
Administrator of National Banks

                              REPORT OF CONDITION

Consolidating domestic and foreign subsidiaries of the NationsBank of Georgia,
N.A. of Atlanta, in the state of Georgia, at the close of business on September
30, 1994 published in response to call made by Comptroller of the Currency,
under Title 12, United States Code, Section 161. Charter Number 13281,
Comptroller of the Currency, Atlanta District.

Statement of Resources and Liabilities
- ------------------------------------------------------------------------------
                                                   Dollar Amounts in Thousands
- ------------------------------------------------------------------------------

ASSETS
                                
Cash and balances due from depository institutions:
Noninterest-bearing balances and currency and coin.................   1,284,932.
Securities:
   Held-to-maturity securities.....................................   2,262,168.
   Available-for-sale securities...................................   1,979,730.

Federal funds sold and securities purchased under agreements to
resell in domestic offices of the bank and of its Edge and
Agreement subsidiaries, and in IBFs:
   Federal funds sold..............................................     681,581.
   Securities purchased under agreements to resell.................       1,000.
Loans and lease financing receivables:
   Loans and leases, net of unearned income.........  10,368,698.
   LESS: Allowance for loan and lease losses........     144,800.
   Loans and leases, net of unearned income,
   allowance, and reserve..........................................  10,223,898.
Assets held in trading accounts....................................      17,832.
Premises and fixed assets (including capitalized leases)...........     188,054.
Other real estate owned............................................      11,810.
Customers' liability to this bank on acceptances outstanding.......     166,352.
Intangible assets..................................................      41,997.
Other assets.......................................................     175,432.
Total assets.......................................................  17,034,786.
                                
<PAGE>
 
LIABILITIES

Deposits:
   In domestic offices.....................................          8,434,032.
   Noninterest-bearing.....................................  2,722,621.
   Interest-bearing........................................  5,711,411.

Federal funds purchased and securities sold under agreements to
 repurchase in domestic offices of the bank and of its Edge and
 Agreement subsidiaries, and in IBFs:
   Federal funds purchased.................................          5,922,740.
   Securities sold under agreements to repurchase..........            294,226.
Demand notes issued to the U.S. Treasury...................            148,359.
Trading Liabilities........................................              6,857.
Other borrowed money:
   With original maturity of one year or less..............            268,337.
   With original maturity of more than one year............                524.
Bank's liability on acceptances executed and outstanding...            166,352.
Other liabilities..........................................            771,599.
Total liabilities..........................................         16,013,026.

                                             EQUITY CAPITAL
Common stock...............................................             97,747.
Surplus....................................................            232,803.
Undivided profits and capital reserves.....................            714,854.
Less: Net unrealized loss on marketable equity securities..            (23,644)
Total equity capital.......................................          1,021,760.
Total liabilities, limited-life preferred stock, and 
 equity capital............................................         17,034,786.

We, the undersigned directors, attest to the correctness of this statement of
resources and liabilities. We declare that it has been examined by us, and to
the best of our knowledge and belief has been prepared in conformance with the
instructions and is true and correct.


 Hugh M. Chapman      |
L.L. Gellerstedt, III | Directors
 Harold A. Dawson     |



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