THERMO ECOTEK CORP
10-Q, 1996-05-06
ELECTRIC SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION


                              Washington, DC  20549

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


                                    FORM 10-Q

   (mark one)

   [ X ] Quarterly Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934 for the Quarter Ended March 30, 1996.

   [   ] Transition Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934.

                         Commission File Number 1-13572 


                            THERMO ECOTEK CORPORATION
             (Exact name of Registrant as specified in its charter)

   Delaware                                                         04-3072335
   (State or other jurisdiction of                            (I.R.S. Employer
   incorporation or organization)                          Identification No.)

   81 Wyman Street, P.O. Box 9046
   Waltham, Massachusetts                                           02254-9046
   (Address of principal executive offices)                         (Zip Code)


       Registrant's telephone number, including area code: (617) 622-1500

               Indicate by check mark whether the Registrant (1)
               has filed all reports required to be filed by
               Section 13 or 15(d) of the Securities Exchange Act
               of 1934 during the preceding 12 months (or for
               such shorter period that the Registrant was
               required to file such reports), and (2) has been
               subject to such filing requirements for the past
               90 days. Yes [ X ]  No [   ]           

               Indicate the number of shares outstanding of each
               of the issuer's classes of Common Stock, as of the
               latest practicable date.


                    Class                  Outstanding at April 26, 1996
         ----------------------------     ------------------------------
         Common Stock, $.10 par value                15,569,742
PAGE
<PAGE>

   PART I - FINANCIAL INFORMATION

   Item 1 - Financial Statements

                            THERMO ECOTEK CORPORATION

                           Consolidated Balance Sheet
                                   (Unaudited)

                                     Assets


                                                     March 30,  September 30,
   (In thousands)                                         1996           1995
   --------------------------------------------------------------------------

   Current Assets:
     Cash and cash equivalents                       $ 81,374        $ 49,159
     Restricted funds                                   7,180          11,992
     Accounts receivable and unbilled revenues         20,555          25,275
     Inventories                                        9,164           9,976
     Prepaid income taxes and other current assets      6,622           5,468
                                                     --------        --------
                                                      124,895         101,870
                                                     --------        --------

   Property, Plant and Equipment                      283,452         272,797
     Less: Accumulated depreciation and amortization   37,444          28,047
                                                     --------        --------
                                                      246,008         244,750
                                                     --------        --------

   Note Receivable                                        900             900
                                                     --------        --------

   Restricted Funds                                    13,320          12,040
                                                     --------        --------

   Other Assets                                        15,660          12,207
                                                     --------        --------

                                                     $400,783        $371,767
                                                     ========        ========












                                        2PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                     Consolidated Balance Sheet (continued)
                                   (Unaudited)

                    Liabilities and Shareholders' Investment


                                                    March 30,   September 30,
   (In thousands except share amounts)                   1996            1995
   --------------------------------------------------------------------------

   Current Liabilities:
     Accounts payable                                $  5,428       $  1,274
     Lease obligations payable                          1,809          1,765
     Current portion of long-term obligations          24,187         21,291
     Accrued interest                                   3,033          3,496
     Other accrued expenses                            12,125         11,555
     Due to parent company                                501            451
                                                     --------       --------
                                                       47,083         39,832
                                                     --------       --------
   Long-term Obligations:
     Nonrecourse tax-exempt obligations                78,700         94,700
     4% Subordinated convertible debentures,
       due to parent company                           68,500         68,500
     Noninterest-bearing subordinated convertible
       debentures (Note 2)                             37,000              -
     Capital lease obligations                         33,318         39,160
                                                     --------       --------
                                                      217,518        202,360
                                                     --------       --------

   Deferred Income Taxes                               22,320         19,775
                                                     --------       --------

   Other Deferred Items                                14,185         13,958
                                                     --------       --------

   Minority Interest                                    2,856          2,857
                                                     --------       --------
   Shareholders' Investment:
     Common stock, $.10 par value, 50,000,000
       shares authorized; 15,584,248 and
       15,506,433 shares issued                         1,558          1,551
     Capital in excess of par value                    64,653         64,188
     Retained earnings                                 30,929         27,268
     Treasury stock at cost, 17,388 and 1,521 shares     (319)           (22)
                                                     --------       --------
                                                       96,821         92,985
                                                     --------       --------

                                                     $400,783       $371,767
                                                     ========       ========

   The accompanying notes are an integral part of these consolidated financial
   statements.
                                        3PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                        Consolidated Statement of Income
                                   (Unaudited)


                                                         Three Months Ended
                                                      -----------------------
                                                      March 30,      April 1,
   (In thousands except per share amounts)                 1996          1995
   --------------------------------------------------------------------------

   Revenues                                             $33,505      $31,015
                                                        -------      -------

   Costs and Operating Expenses:
     Cost of revenues (includes $1,647 and
       $1,339 to related parties)                        26,560       25,668
     General and administrative expenses (includes
       $379 and $416 to parent company)                   2,749        2,327
                                                        -------      -------

                                                         29,309       27,995
                                                        -------      -------

   Operating Income                                       4,196        3,020

   Interest Income                                        1,113          671
   Interest Expense (includes $685 and $693
     to parent company)                                  (3,621)      (2,646)
                                                        -------       ------

   Income Before Provision for Income Taxes
     and Minority Interest                                1,688        1,045

   Provision for Income Taxes                               752          242
   Minority Interest Expense                                327          392
                                                        -------       ------

   Net Income                                           $   609      $   411
                                                        =======      =======

   Earnings per Share                                   $   .04      $   .03
                                                        =======      =======

   Weighted Average Shares                               16,310       13,953
                                                        =======      =======


   The accompanying notes are an integral part of these consolidated financial
   statements.

                                        4PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                        Consolidated Statement of Income
                                  (Unaudited) 


                                                         Six Months Ended
                                                     -----------------------  
                                                     March 30,       April 1,
   (In thousands except per share amounts)                1996           1995
   --------------------------------------------------------------------------

   Revenues                                            $67,801       $63,195
                                                       -------       -------

   Costs and Operating Expenses:
     Cost of revenues (includes $3,113 and
       $2,814 to related parties)                       50,749        50,393
     General and administrative expenses (includes
       $835 and $994 to parent company)                  5,175         3,778
                                                       -------       -------

                                                        55,924        54,171
                                                       -------       -------

   Operating Income                                     11,877         9,024

   Interest Income                                       2,368         1,191
   Interest Expense (includes $1,370 and $1,307
     to parent company)                                 (7,464)       (5,412)
                                                       -------        ------

   Income Before Provision for Income Taxes
     and Minority Interest                               6,781         4,803

   Provision for Income Taxes                            2,545         1,415
   Minority Interest Expense                               575           701
                                                       -------        ------

   Net Income                                            3,661         2,687
                                                       =======       =======
   Earnings per Share:
     Primary                                           $   .23       $   .20
                                                       =======       =======
     Fully diluted                                     $   .19       $   .17
                                                       =======       =======
   Weighted Average Shares:
     Primary                                            16,067        13,555
                                                       =======       =======
     Fully diluted                                      23,321        21,079
                                                       =======       =======

   The accompanying notes are an integral part of these consolidated financial
   statements.
                                        5PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                      Consolidated Statement of Cash Flows
                                   (Unaudited)

                                                          Six Months Ended
                                                      -----------------------
                                                      March 30,      April 1,
   (In thousands)                                          1996          1995
   --------------------------------------------------------------------------
   Operating Activities:
     Net income                                       $  3,661      $  2,687
     Adjustments to reconcile net income
       to net cash provided by operating activities:
         Minority interest expense                         575           701
         Depreciation and amortization                   9,984         5,214
         Increase in deferred income taxes               2,545         1,192
         Decrease in other deferred items                    -          (797)
         Changes in current accounts: 
           Restricted funds                              4,812         4,351
           Accounts receivable and unbilled revenues     4,720         4,952
           Inventories                                     812        (1,231)
           Other current assets                         (1,154)        1,489
           Accounts payable                              4,154           308
           Lease obligations payable                       441         1,161
           Due to parent company                            50        (2,015)
           Other current liabilities                       107           (33)
                                                      --------      --------
             Net cash provided by operating
               activities                               30,707        17,979
                                                      --------      --------
   Investing Activities:
     Funding of long-term restricted funds              (1,280)       (3,284)
     Increase in other assets                           (3,004)            -
     Purchases of property, plant and equipment        (10,672)       (1,140)
                                                      --------      --------
             Net cash used in investing
               activities                              (14,956)       (4,424)
                                                      --------      --------
   Financing Activities:
     Due to parent company                                   -           542
     Repayment of long-term obligations                (18,946)      (11,200)
     Net proceeds from issuance of subordinated
       convertible debentures (Note 2)                  35,942             -
     Net proceeds from issuance of Company
       common stock                                        175        27,506
     Distribution to minority partner                     (707)         (538)
                                                      --------      --------
             Net cash provided by financing
               activities                               16,464        16,310
                                                      --------      --------
   Increase in Cash and Cash Equivalents                32,215        29,865
   Cash and Cash Equivalents at Beginning of Period     49,159        14,259
                                                      --------      --------
   Cash and Cash Equivalents at End of Period         $ 81,374      $ 44,124
                                                      ========      ========
   Cash Paid For:
     Interest                                         $  7,927      $  5,811
     Income taxes                                     $     97      $      1

   The accompanying notes are an integral part of these consolidated financial
   statements.
                                        6PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                   Notes to Consolidated Financial Statements

   1. General

      The interim consolidated financial statements presented have been
   prepared by Thermo Ecotek Corporation (the Company) without audit and, in
   the opinion of management, reflect all adjustments of a normal recurring
   nature necessary for a fair statement of (a) the results of operations for
   the three- and six-month periods ended March 30, 1996 and April 1, 1995,
   (b) the financial position at March 30, 1996, and (c) the cash flows for
   the six-month periods ended March 30, 1996 and April 1, 1995. Interim
   results are not necessarily indicative of results for a full year.

      The consolidated balance sheet presented as of September 30, 1995, has
   been derived from the consolidated financial statements that have been
   audited by the Company's independent public accountants. The consolidated
   financial statements and notes are presented as permitted by Form 10-Q, and
   do not contain certain information included in the annual financial
   statements and notes of the Company. The consolidated financial statements
   and notes included herein should be read in conjunction with the financial
   statements and notes included in the Company's Transition Report on Form
   10-K for the nine months ended September 30, 1995, filed with the
   Securities and Exchange Commission.


   2. Noninterest-bearing Subordinated Convertible Debentures

      In March 1996, the Company issued and sold at par $37 million principal
   amount of noninterest-bearing subordinated convertible debentures due 2001.
   The debentures are convertible into shares of the Company's common stock at
   a conversion price of $20.34 per share and are guaranteed on a subordinated
   basis by Thermo Electron. Net proceeds were approximately $36 million. 


   Item 2 - Management's Discussion and Analysis of Financial Condition and
            Results of Operations

   Overview

      The Company earns revenues from the operation of independent electric
   power generation facilities through joint ventures, limited partnerships or
   wholly owned subsidiaries (the Operating Companies). Each Operating Company
   sells power under a long-term power sale agreement. The profitability of
   operating the Company's facilities depends on the price received for power
   under the power sale agreements with power purchasers, on plant performance
   or availability, on the degree to which utilities exercise curtailment
   rights granted under power sale agreements and on the fuel, operating and
   maintenance costs for the facilities. Curtailment rights allow a utility to
   require an Operating Company to curtail power output up to pre-established
   annual levels during periods of low system demand. A utility commonly
   experiences low system demand during periods when hydroelectric power is
   available, generally following periods of heavy rain or snow. The
   contractually allowable maximum for such curtailment at each of the
   Company's Woodland and Mendota plants is 1,000 hours per calendar year,
   which was reached in calendar 1995. The Woodland and Mendota plants each
   experienced approximately 425 hours of curtailment from January through
                                        7PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

   Overview (continued)

   March 1996, and expect to experience curtailment during the remainder of
   fiscal 1996. The Company earns a disproportionately high share of its
   income in the months of May to October due to the rate structures under the
   power sale agreements relating to its California plants, which provide
   strong incentives to operate during this period of high demand. Conversely,
   the Company has historically operated at a loss or marginal profit during
   the second fiscal quarter due to the rate structure under these agreements.
   The Company's profitability is also dependent on the amount of development
   expenses that it incurs.

   Results of Operations

       In June 1995, the Company changed its fiscal year-end from the
   Saturday nearest December 31 to the Saturday nearest September 30.

   Three Months Ended March 30, 1996 Compared With Three Months Ended April 1,
   1995

        Revenues in the three months ended March 30, 1996 were $33.5 million,
   compared with $31.0 million in the three months ended April 1, 1995, an
   increase of $2.5 million, or 8.1%. The increase is primarily due to higher
   contractual energy rates at all of the Company's facilities, except the
   Hemphill plant, as well as fewer days of scheduled and unscheduled outages
   at the Delano plants, offset in part by higher curtailment of power output
   at the Mendota and Woodland plants.

       The Hemphill and Whitefield Operating Companies have reached an
   agreement in principle with Public Service of New Hampshire (PSNH) to
   settle certain rate order renegotiations initiated by PSNH. The settlement
   agreement is subject to the approval of the New Hampshire Public Utilities
   Commission on terms acceptable to both PSNH and the Company, and the
   satisfaction of certain other conditions. The principal terms of the
   agreement generally call for the Hemphill and Whitefield Operating
   Companies to reduce the amount of power sold annually to PSNH to 70% of the
   plants' capacities, and to reduce the price per kilowatt paid by PSNH to
   $.06 per kilowatt hour, escalating three percent per year for the remainder
   of the term of the original, applicable rate order. In consideration for
   these reductions, the Operating Companies would receive certain cash
   settlement payments, paid over several years. The settlement, if approved
   and executed, is not expected to have a material impact on the Company's
   consolidated results of operations or financial condition.

       The gross profit margin increased to 21% in the three months ended
   March 30, 1996, compared with 17% in the three months ended April 1, 1995.
   The improvement results primarily from the effect of higher revenues
   described above and lower fuel and other operating costs at two of the
   Company's California plants.

       General and administrative expenses as a percentage of revenues were
   8.2% in the three months ended March 30, 1996, compared with 7.5% in the
   three months ended April 1, 1995. The change results primarily from an
   ongoing increase in international business development efforts.

       Interest income increased to $1.1 million in the three months ended
   March 30, 1996, compared with $671,000 in the three months ended April 1,
   1995, primarily due to increased invested amounts as a result of the 

                                        8PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

   Three Months Ended March 30, 1996 Compared With Three Months Ended
   April 1, 1995 (continued)

   Company's initial public offering in February 1995, which raised net
   proceeds of $27.5 million, and approximatly $36 million of net proceeds
   from the Company's issuance of convertible debentures in March 1996.
   Interest expense increased to $3.6 million in the three months ended March
   30, 1996, compared with $2.6 million in the three months ended April 1,
   1995, primarily due to the conversion of the Mendota plant lease to a
   capital lease effective April 1995.

       The effective tax rate was 45% in the three months ended March 30,
   1996, compared with 23% in the three months ended April 1, 1995. The tax
   rate in 1996 exceeds the statutory federal rate due to state income taxes.
   The 1995 effective tax rate reflects the benefit of tax credits and loss
   carryforwards.

       Minority interest expense represents the allocation of income from
   plant operations to a minority partner in an Operating Company.

   Six Months Ended March 30, 1996 Compared With Six Months Ended April 1,
   1995

       Revenues in the six months ended March 30, 1996 were $67.8 million,
   compared with $63.2 million in 1995, an increase of $4.6 million. The
   increase is primarily due to higher contractual energy rates in 1996 at all
   of the Company's facilities, except the Hemphill plant, as well as fewer
   days of scheduled and unscheduled outages at the Delano plants, offset in
   part by higher curtailment of power output at the Mendota and Woodland
   plants.

       The gross profit margin increased to 25% during the six months ended
   March 30, 1996, compared with 20% in the six months ended April 1, 1995.
   The improvement results largely from the effect of higher revenues and
   lower fuel costs.

       General and administrative expenses as a percentage of revenues were
   7.6% in the six months ended March 30, 1996, compared with 6.0% in the six
   months ended April 1, 1995. The change results primarily from an ongoing
   increase in international business development efforts.

       Interest income increased to $2.4 million in the six months ended
   March 30, 1996, compared with $1.2 million in the six months ended April 1,
   1995 due to increased invested amounts as a result of the Company's initial
   public offering in February 1995 and net proceeds from the Company's
   issuance of convertible debentures in March 1996. Interest expense
   increased to $7.5 million during the six months ended March 30, 1996,
   compared with $5.4 million in the six months ended April 1, 1995, primarily
   due to the conversion of the Mendota plant lease to a capital lease
   effective April 1995.

       The effective tax rates were 38% and 29% in 1996 and 1995,
   respectively. The rates in both years reflect the exclusion of income taxed
   directly to minority partners, offset in part by state income taxes. The
   1995 effective tax rate also reflects the benefit of tax credits and loss
   carryforwards.
                                        9PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

   Liquidity and Capital Resources

       Working capital increased to $77.8 million at March 30, 1996 from
   $62.0 million at September 30, 1995. The Company had cash, cash
   equivalents, and current restricted funds of $88.6 million at March 30,
   1996, compared with $61.2 million at September 30, 1995. At March 30, 1996,
   current restricted funds held in trust pursuant to certain lease and debt
   agreements totaled $7.2 million. The use of an additional $3.9 million of
   cash and cash equivalents at March 30, 1996 was also restricted by the
   terms of certain lease and financing agreements. These restrictions limit
   the ability of the Operating Companies to transfer funds to the Company in
   the form of dividends, loans, advances or other distributions.

       During the six months ended March 30, 1996, the Company's operating
   activities provided cash and restricted funds of $25.9 million. The Company
   received approximately $36 million of net proceeds from the issuance of  
   $37 million principal amount of noninterest-bearing subordinated
   convertible debentures in March 1996. The Company used cash of $18.9
   million for the repayment of long-term obligations related to two of its
   California plants. The Company also used cash of $3.0 million to purchase
   an additional 1,500,000 shares of KFX Inc. (KFX) common stock bringing its
   total equity interest in KFX to approximately 14%. Pursuant to certain
   agreements with KFX, the Company has the right, but not the obligation, to
   purchase an additional 1,250,000 shares of KFX common stock for $2.00 per
   share in fiscal 1997, and to purchase up to a 51% equity interest in KFX in
   fiscal 2000. In addition, during the six months ended March 30, 1996, the
   Company expended $10.2 million for the construction of a coal-beneficiation
   facility near Gillette, Wyoming and expended $.5 million on the purchase of
   other property, plant and equipment. The Company is committed to fund
   approximately an additional $31 million for construction of the
   coal-beneficiation facility, primarily during the remainder of fiscal 1996.
   During the first half of fiscal 1996, the Company distributed $.7 million
   to a minority partner of one of its Operating Companies.

       The Company is committed to contribute $15 million for a minority
   interest in a 185 megawatt combined cycle, steam-turbine
   electric-generation facility located in Puerta Plata, Dominican Republic.
   Funding is expected to take place by the end of fiscal 1996 unless the
   Company notifies its project partner of its intention not to provide
   funding and, within 60 days following such notice, the project fails to
   pass a prescribed performance test.

        Pursuant to an Asset Purchase Agreement between two of the Company's
   wholly owned subsidiaries and W.R. Grace & Co. - Conn. (Grace), the Company
   agreed to pay $8.0 million, subject to certain adjustments, for the
   acquisition of all net assets of Grace's business unit specializing in the
   manufacture and distribution of botanical extracts and microbial products
   used for pest control. The Company currently expects to complete this
   acquisition during its third fiscal quarter, however, completion is subject
   to obtaining regulatory approvals and consents of certain third parties, as
   well as satisfaction of other closing conditions.




                                       10PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

   Liquidity and Capital Resources (continued)

        The Company expects to fund its existing commitments for the remainder
   of fiscal 1996 through its current resources. Although the Company's
   projects are designed to produce positive cash flow over the long term, the
   Company will have to obtain significant amounts of funds from time to time
   to meet project development requirements, including the funding of equity
   investments. As the Company acquires, invests in or develops future plants
   or technologies, the Company expects to finance them with nonrecourse debt
   and to fund equity contributions through internal funds, raising additional
   equity or through borrowings from third parties or Thermo Electron. While
   Thermo Electron has expressed its willingness to provide funds to the
   Company to help finance the Company's equity investments in future
   projects, the Company has no agreements with Thermo Electron that assure
   funds will be available on acceptable terms, or at all.


   PART II - OTHER INFORMATION

   Item 4 - Submission of Matters to a Vote of Security Holders

        On March 11, 1996, at the Annual Meeting of Shareholders, the
   shareholders elected seven directors to a one-year term expiring in 1997.
   The directors elected at the meeting were Jerry P. Davis, George N.
   Hatsopoulos, John N. Hatsopoulos, Brian D. Holt, Frank Jungers, William A.
   Rainville, and Susan F. Tierney. Each nominee for director received
   14,872,970 shares voted in favor of his election and 15,204 shares against,
   except William A. Rainville who received 14,872,770 shares voted in favor
   of his election and 15,404 shares against, and Susan F. Tierney who
   received 14,868,670 shares voted in favor of her election and 19,504 shares
   against. No broker nonvotes were recorded on the election of directors.

        The shareholders also approved a proposal to adopt an employee's stock
   purchase plan and to reserve 50,000 shares of the Company's common stock
   and 50,000 shares of Thermo Electron's common stock for issuance thereunder
   as follows: 14,866,628 shares voted in favor, 13,606 shares voted against,
   and 7,940 shares abstained. No broker nonvotes were recorded on the
   proposal.


   Item 6 - Exhibits

       See Exhibit Index on the page immediately preceding exhibits.








                                       11PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                                   SIGNATURES

       Pursuant to the requirements of the Securities Exchange Act of 1934,
   the Registrant has duly caused this report to be signed on its behalf by
   the undersigned thereunto duly authorized as of the 3rd day of May 1996.

                                             THERMO ECOTEK CORPORATION



                                             Paul Kelleher
                                             -------------------------
                                             Paul F. Kelleher
                                             Chief Accounting Officer



                                             John N. Hatsopoulos
                                             -------------------------
                                             John N. Hatsopoulos
                                             Chief Financial Officer


























                                       12PAGE
<PAGE>
                            THERMO ECOTEK CORPORATION

                                  Exhibit Index


   Exhibit
   Number       Description of Exhibit                                    Page
   -------      -----------------------------------------------------     ----

      2         Asset Purchase Agreement among Thermo Trilogy
                Corporation, Thermo Ecotek International Holdings,
                Inc., and W.R. Grace & Co. - Conn. dated March 5, 1996.
                Pursuant to Item 601 (b)(2) of registration S-K,
                schedules to this Agreement have been omitted. The
                Company hereby undertakes to furnish supplementally a
                copy of such schedules to the Commission upon request.

      4         Fiscal Agency Agreement dated as of March 14, 1996
                among the Company, Thermo Electron Corporation, and
                Chemical Bank as fiscal agent, relating to $37 million
                principal amount of noninterest-bearing subordinated
                convertible debentures due 2001.

     11         Statement re: Computation of earnings per share.

     27         Financial Data Schedule.
































                                                                Exhibit 2





                            ASSET PURCHASE AGREEMENT



                                      Among



                           THERMO TRILOGY CORPORATION,



                   THERMO ECOTEK INTERNATIONAL HOLDINGS, INC.



                                       and


                            W. R. GRACE & CO. - CONN.





                                  March 5, 1996
PAGE
<PAGE>
                                TABLE OF CONTENTS
                                                                     Page
                                                                     ----

        ARTICLE I - THE PURCHASE  ...............................     1

             1.1  Purchase and Sale of Assets  ..................     1
             1.2  Assumption of Liabilities  ....................     3
             1.3  Purchase Price  ...............................     7
             1.4  The Closing  ..................................     8
             1.5  Allocation of Purchase Price  .................     9
             1.6  Post-Closing Adjustments  .....................    10
             1.7  Further Assurances  ...........................    12

        ARTICLE II - REPRESENTATIONS AND WARRANTIES
                       OF THE SELLER  ...........................    12

             2.1  Organization, Qualification and
                    Corporate Power  ............................    12
             2.2  Authority  ....................................    13
             2.3  Noncontravention  .............................    13
             2.4  Financial Statements  .........................    14
             2.5  Absence of Certain Changes  ...................    14
             2.6  Ownership and Condition of Assets  ............    14
             2.7  Intellectual Property  ........................    15
             2.8  Foreign Companies  ............................    16
             2.9  Contracts  ....................................    17
             2.10 Litigation  ...................................    19
             2.11 Product Warranty  .............................    19
             2.12 Environmental Matters  ........................    19
             2.13 Legal Compliance  .............................    20
             2.14 Permits and Registrations  ....................    20
             2.15 Brokers' Fees  ................................    21
             2.16 Books and Records  ............................    21
             2.17 Customers and Suppliers  ......................    21

        ARTICLE III - REPRESENTATIONS AND WARRANTIES OF THE BUYER    21

             3.1  Organization  .................................    21
             3.2  Authorization of Transaction  .................    21
             3.3  Noncontravention  .............................    22
             3.4  Brokers' Fees  ................................    22
             3.5  Status as Subsidiaries  .......................    22
             3.6  Financial Projections  ........................    22

        ARTICLE IV - PRE-CLOSING COVENANTS  .....................    23

             4.1  Reasonable Efforts  ...........................    23
             4.2  Notices and Consents  .........................    22
             4.3  Operation of Business  ........................    23
             4.4  Full Access  ..................................    24
             4.5  Exclusivity  ..................................    25

        ARTICLE V - CONDITIONS TO CLOSING  ......................    25

             5.1  Conditions to Obligations of the Buyer  .......    25
             5.2  Conditions to Obligations of the Seller  ......    27
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             5.3  Waiver of Intervening Event  ..................    28

        ARTICLE VI - POST-CLOSING COVENANTS  ....................    28

             6.1  Proprietary Information  ......................    28
             6.2  Solicitation and Hiring  ......................    29
             6.3  Non-Competition; Referral of Customers  .......    29
             6.4  Sharing of Data  ..............................    30
             6.5  Use of Labels  ................................    31
             6.6  Cooperation in Litigation  ....................    31
             6.7  Collection of Accounts Receivable and
                    Contracts in Progress  ......................    31
             6.8  Employees  ....................................    32
             6.9  Detachment of Machinery and Equipment  ........    32
             6.10 Defense of Patents  ...........................    33
             6.11 Intercompany Agreements  ......................    33
             6.12 Margo Consents  ...............................    33
             6.13 Maintenance of Pesticide Registrations  .......    33

        ARTICLE VII - INDEMNIFICATION  ..........................    34

             7.1  Indemnification by Seller  ....................    34
             7.2  Indemnification by Buyer  .....................    34
             7.3  Claims for Indemnification  ...................    35
             7.4  Defense by the Indemnifying Party  ............    35
             7.5  Payment of Indemnification Obligation  ........    36
             7.6  Survival  .....................................    36
             7.7  Limitations on Amount  ........................    37
             7.8  No Consequential or Lost Profit Damages.........   37

        ARTICLE VIII - TERMINATION  .............................    37

             8.1  Termination of Agreement  .....................    37
             8.2  Effect of Termination  ........................    38

        ARTICLE IX - DEFINITIONS  ...............................    39

        ARTICLE X - MISCELLANEOUS  ..............................    40

             10.1  Press Releases and Announcements  ............    40
             10.2  No Third Party Beneficiaries  ................    40
             10.3  Entire Agreement  ............................    40
             10.4  Succession and Assignment  ...................    40
             10.5  Counterparts  ................................    41
             10.6  Headings  ....................................    41
             10.7  Notices  .....................................    41
             10.8  Governing Law  ...............................    42
             10.9  Amendments and Waivers  ......................    42
             10.10 Severability  ................................    42
             10.11 Expenses  ....................................    42
             10.12 Specific Performance  ........................    43
             10.13 Submission to Jurisdiction  ..................    43
             10.14 Construction  ................................    43
             10.15 Incorporation of Exhibits and Schedules  .....    44


         Exhibit A - Form of Bill of Sale
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         Exhibit B - Form of Instrument of Assumption of Liabilities

         Exhibit C - Form of Lease

         Exhibit D - Financial Statements

         Exhibit E - Margo Financial Statements

         Schedule 1.1(b) - Excluded Assets

         Schedule 6.8 - Employees to be Offered Employment by the Buyer

         Schedule 6.9 - Equipment to be Detached

         Disclosure Schedule
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                            ASSET PURCHASE AGREEMENT


             This Agreement is entered into as of March 5, 1996 by and
        among Thermo Trilogy Corporation, a Delaware corporation ("TTC"),
        and Thermo Ecotek International Holdings, Inc., a Cayman Island
        corporation ("TEIH") (collectively, "Buyer"), and W. R. Grace &
        Co.-Conn., a Connecticut corporation (the "Seller").  The Buyer
        and the Seller are referred to collectively herein as the
        "Parties."

                              Preliminary Statement

             The Buyer desires to purchase, and the Seller desires to
        sell, the business and assets comprising the Seller's business of
        identifying, developing, manufacturing, marketing and selling
        biopesticide products and comprising its Biopesticides Business
        Unit (the "Business"), for the consideration set forth below and
        the assumption of certain of the Seller's liabilities set forth
        below relating to the Business, subject to the terms and
        conditions of this Agreement.

             NOW, THEREFORE, in consideration of the representations,
        warranties and covenants herein contained, the Parties agree as
        follows.

                                    ARTICLE I

                                  THE PURCHASE

             1.1  Purchase and Sale of Assets.

                  .1(a)     Upon and subject to the terms and conditions
        of this Agreement, the Buyer shall purchase from the Seller, and
        the Seller shall sell, transfer, convey, assign and deliver to
        the Buyer, at the Closing (as defined in Section 1.4(a)), for the
        consideration specified below in this Article I, all of the
        Seller's right, title and interest in and to all of the assets of
        the Seller primarily relating to or primarily used in the
        Business and existing as of the Closing (collectively, the
        "Acquired Assets"), including without limitation: 

                      (i)   all trade and other accounts receivable and
        notes receivable (the "Accounts Receivable") and all unbilled
        amounts for contracts in progress (the "Contracts in Progress");

                     (ii)   all inventories of raw materials, work in
        process, finished goods, supplies, packaging materials, spare
        parts and similar items;

                    (iii)   all machinery, equipment, tools and tooling,
        furniture and motor vehicles, including without limitation those
        set forth in Section 2.6(c) of the Disclosure Schedule; 

                     (iv)   all (A) patents, patent applications, patent
        disclosures and all related continuation, continuation-in-part,
        divisional, reissue, re-examination, utility model, certificate
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        of invention and design patents, patent applications,
        registrations and applications for registrations, (B) trademarks,
        service marks, trade drafts, logos and trade names and
        registrations and applications for registration thereof
        (C) copyrights and registrations and applications for
        registration thereof, (D) computer software, data and
        documentation, (E) trade secrets and confidential business
        information, whether patentable or nonpatentable and whether or
        not reduced to practice, know-how, manufacturing and product
        processes and techniques, research and development information,
        copyrightable works, financial, marketing and business data,
        pricing and cost information, business and marketing plans and
        customer and supplier lists and information, (F) other
        proprietary rights relating to any of the foregoing (including
        without limitation remedies against infringements thereof and
        rights of protection of interest therein under the laws of all
        jurisdictions) and (G) copies and tangible embodiments thereof
        (collectively, "Intellectual Property"), including without
        limitation the Intellectual Property set forth in Section 2.7(c)
        of the Disclosure Schedule; 

                      (v)   all rights under contracts, agreements or
        instruments (including without limitation any agreements or
        instruments securing any amounts owed to the Seller in connection
        with the Business, any leases or subleases for real property, any
        equipment leases, and any licenses or sublicenses issued to or by
        the Seller relating to Intellectual Property) (collectively, the
        "Assigned Contracts"), including without limitation those
        contracts and licenses set forth in Sections 2.7(d) and 2.9 of
        the Disclosure Schedule;

                     (vi)   all permits, licenses, registrations,
        certificates, orders, approvals, franchises, variances and
        similar rights ("Permits") issued by or obtained from any
        foreign, federal, state or local governmental, regulatory or
        administrative authority or agency, court or arbitrational
        tribunal (a "Governmental Entity"), including without limitation
        all registrations and pending registrations related to the
        manufacture, sale, distribution or use of pesticides ("Pesticide
        Registrations"); 

                    (vii)   800,000 equity shares, par value rs. 10 per
        share (the "Margo Shares"), of PJ Margo Private Limited, a
        company organized in the State of Karnataka, India under the
        Indian Companies Act, 1956 (1 of 1956) ("Margo") and one share of
        the capital stock, Baht 100 par value per share, of Neem Company
        Ltd., a corporation organized in Thailand ("Neem Co."), and all
        rights of the Seller under the Investment Agreement dated
        December 31, 1994 (the "Investment Agreement") among Polyagri
        Limited, P.F.C. Company Ltd., the Seller, Neem Co. and certain
        Thai citizens specified therein (the share of Neem Co. capital
        stock and the rights under the Investment Agreement are
        collectively referred to as the "Neem Shares") (Margo and Neem
        Co. are collectively referred to as the "Foreign Companies");  

                   (viii)   microbial cultures of Gliocladium 21,
        Paecyliomyces Fumaroses and Rhizobium soybean growth enhancers;
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                     (ix)   all rights to enforce any confidentiality
        agreements between the Seller and its employees to the extent
        that such confidentiality agreements relate to the Business; and

                      (x)   all books, records, accounts, ledgers, files,
        documents, correspondence, lists, architectural drawings or
        specifications, manufacturing and procedural manuals, advertising
        and promotional materials, studies, reports and other printed or
        written materials.

                  .1(b)     Notwithstanding the provisions of
        Section 1.1(a), the Acquired Assets shall not include those
        assets listed on Schedule 1.1(b) attached hereto (collectively,
        the "Excluded Assets").

             1.2  Assumption of Liabilities.

                  .2(a)     Upon and subject to the terms and conditions
        of this Agreement, TTC shall assume and become responsible for,
        upon the Closing, all of the following liabilities of the Seller
        (collectively, the "Assumed Liabilities"):  

                      (i)   the liabilities of the Seller incurred in
        connection with the Business as set forth on the face of the
        unaudited statement of net assets of the Business dated as of
        December 31, 1995 (i.e., accounts payable, progress payments and
        advances and other current liabilities), included in the
        Financial Statements (the "December 31, 1995 Balance Sheet"), to
        the extent they have not been paid or discharged prior to the
        Closing;

                     (ii)   all liabilities of the Seller which have
        arisen after the date of the December 31, 1995 Balance Sheet in
        the ordinary course of business and which are of the same type as
        those set forth on the face of the December 31, 1995 Balance
        Sheet (i.e., accounts payable, progress payments and advances and
        other current liabilities), to the extent that they have not been
        paid or discharged prior to the Closing; provided that this
        clause (ii) shall not encompass any such liabilities which relate
        to any breach of contract, breach of warranty, tort, infringement
        or violation of law or which arose out of any charge, complaint,
        action, suit, proceeding, hearing, investigation, claim or
        demand; 

                    (iii)   any obligation of the Seller under an
        Assigned Contract arising prior to the Closing to the extent the
        Seller has no knowledge as of the Closing Date of any breach
        thereof;

                     (iv)   any liability of the Seller for breach of
        warranty arising prior to the Closing with respect to any product
        which is continuing to be manufactured as part of the Business by
        the Seller as of the Closing Date; provided, however, that in no
        event shall TTC have any liability hereunder for tort claims,
        claims alleging health risk or personal injury or any claims
        related to property damage (including without limitation crop
        damage);
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                      (v)   all obligations of the Seller arising after
        the Closing under the Assigned Contracts; 

                     (vi)   all liability of the Seller arising out of
        any claim, suit, action, arbitration, proceeding, investigation
        or similar matter relating to (a) any infringement or alleged
        infringement of any patent by the Seller in the conduct of the
        Business or (b) any violation or alleged violation of law (other
        than violations or alleged violations of Environmental Laws) by
        the Seller if, with respect to both (a) and (b), (I) the Seller
        has no knowledge as of the Closing Date of the pendency or threat
        of such claim, suit, action, arbitration, proceeding,
        investigation or similar matter, and (II) the conduct giving rise
        to such claim, suit, action, arbitration, proceeding,
        investigation or similar matter is continuing as of the Closing
        Date and is continued by TTC in its conduct of the Business;
        provided that in no event shall TTC have any liability hereunder
        for tort claims; and

                    (vii)   any other liability of the Seller incurred in
        connection with the Business (other than Retained Liabilities)
        arising prior to the Closing if (a) such liability is less than
        $5,000 and (b) Seller has no knowledge of such liability on the
        Closing Date; provided, however, that liabilities that arise from
        the same violation or alleged violation, events, facts or
        circumstances shall be aggregated for purposes of calculating the
        amount of any liability under this Section 1.2(a)(vii).


                  .2(b)     The Buyer shall not assume or become
        responsible for, and the Seller shall remain liable for, any and
        all liabilities or obligations (whether known or unknown, whether
        absolute or contingent, whether liquidated or unliquidated,
        whether accrued or unaccrued, whether due or to become due, and
        whether claims with respect thereto are asserted before or after
        the Closing) of the Seller which are not Assumed Liabilities
        (collectively, the "Retained Liabilities").  The Retained
        Liabilities shall include, without limitation, the following:

                      (i)   all liabilities of the Seller for costs and
        expenses incurred in connection with this Agreement or the
        consummation of the transactions contemplated by this Agreement; 

                     (ii)   all liabilities or obligations of the Seller
        under this Agreement or any agreement or instrument attached as
        an exhibit hereto or contemplated to be entered into hereby
        (collectively, the "Ancillary Agreements"); 

                    (iii)   all liabilities of the Seller for any taxes
        (including without limitation deferred taxes or taxes measured by
        income of the Seller earned prior to the Closing, any liabilities
        for federal or state income tax and FICA taxes of employees of
        the Seller which the Seller is legally obligated to withhold
        prior to the Closing, any liabilities for employer FICA and
        unemployment taxes incurred prior to the Closing, and any
        liabilities for sales, use, ad valorem or excise taxes or customs
        and duties incurred prior to the Closing);
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                     (iv)   all liabilities and obligations of the Seller
        under any agreements, contracts, leases or licenses which are not
        Assigned Contracts; 

                      (v)   other than as expressly assumed by TTC
        pursuant to Section 1.2(a)(iv), all obligations of the Seller for
        rework, replacement or return of products sold prior to the
        Closing;

                     (vi)   all liabilities of the Seller for any product
        liability claim, including damage to persons or property,
        relating to products sold prior to the Closing;

                    (vii)   other than as expressly assumed by TTC
        pursuant to Section 1.2(a)(vi), all liabilities and obligations
        of the Seller arising out of events, conduct or conditions
        existing or occurring prior to the Closing that constitute a
        violation of or noncompliance with any law, rule or regulation,
        any judgment, decree or order of any Governmental Entity, or any
        Permit; 

                   (viii)   all liabilities of the Seller resulting from
        (A) any releases of any Materials of Environmental Concern (as
        defined in Section 2.12(b)) into the environment in connection
        with the operation of the Business by the Seller or any
        predecessor business or company prior to the Closing Date or for
        which Seller is otherwise liable; or (B) any violation of any
        Environmental Law by the Seller or any predecessor business or
        company which occurred prior to the Closing Date;

                     (ix)   all liabilities of the Seller for injury to
        or death of persons or damage to or destruction of property
        occurring prior to the Closing (including without limitation any
        workers compensation claim);

                      (x)   all inter-company liabilities of the Seller;

                     (xi)   all accounts payable to Margo in respect of
        goods in transit;

                    (xii)   all liabilities and obligations of the Seller
        to pay severance or other benefits to any employee of the Seller
        whose employment is terminated (or treated as terminated) in
        connection with the consummation of the transactions contemplated
        by this Agreement and all liabilities resulting from the
        termination of employment of employees of the Seller prior to the
        Closing that arose under any federal or state law or under any
        employee benefit plan established or maintained by the Seller; 

                   (xiii)   all liabilities and obligations of the Seller
        for all compensation and benefits accrued by employees of the
        Seller employed in the Business, including without limitation,
        accrued vacation time and sick leave, premiums or benefits under
        any employee benefit plan and severance pay; and

                    (xiv)   other than as expressly assumed by TTC
        pursuant to Section 1.2(a)(vi) and 1.2(a)(vii), all liability of
        the Seller arising out of any claim, suit, action, arbitration,
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        proceeding, investigation or other similar matter which commenced
        or relates to the ownership of the Acquired Assets or the
        operation of the Business on or prior to the Closing.

                  .2(c)     Notwithstanding anything herein to the
        contrary, the maximum aggregate amount that TTC shall be required
        to expend (including without limitation monetary damages, fines,
        fees, penalties, interest obligations, deficiencies, losses,
        amounts paid in settlement, court costs, costs of investigation,
        fees and expenses of attorneys, accountants, financial advisers
        and other experts, and other expenses of litigation, arbitration
        or investigation) in respect of the liabilities assumed pursuant
        to Sections 1.2(a)(iii), 1.2(a)(iv), 1.2(a)(vi) and 1.2(a)(vii)
        shall not exceed the sum of (i) $100,000 plus (ii) one-half of
        amounts in excess of said $100,000 up to an additional excess
        amount of $400,000.  In no event shall the aggregate amount
        payable by TTC in respect of the liabilities assumed pursuant to
        Sections 1.2(a)(iii), 1.2(a)(iv), 1.2(a)(vi) and 1.2(a)(vii)
        exceed $300,000.  In calculating the aggregate amount which TTC
        has expended in respect of the liabilities assumed pursuant to
        Sections 1.2(a)(iii), 1.2(a)(iv), 1.2(a)(vi) and 1.2(a)(vii),
        amounts expended on a single liability, claim, action, suit,
        investigation, arbitration, proceeding or similar matter which
        aggregate less than $5,000 shall not be considered; provided,
        however, that amounts expended on matters that arise from the
        same violation or alleged violation, events, facts or
        circumstances shall be aggregated for purposes of this
        calculation.  

                  .2(d)     As used in this Agreement, the words
        "knowledge," "to the knowledge of Seller," "to the best knowledge
        of Seller" or similar words shall mean the actual knowledge of
        the employees of the Seller (other than employees of the
        Business) and of W. R. Grace & Co. after inquiry that is
        reasonable in light of the subject matter involved and the
        position held by the person in question, including without
        limitation due inquiry made by such persons of the Subject
        Business Executives; provided, however, that with respect to
        knowledge as it applies to Margo, knowledge shall mean the actual
        knowledge of such employees and the actual knowledge of the
        directors of Margo who serve in such position at the Seller's
        request.  The "Subject Business Executives" shall mean J.L. Su,
        J. Eyal, J.F. Walter, T.R. Gouker and K. Warkentien. 

                  (e)  Following receipt of notice of the filing of any
        claim, suit or action or of the commencement of any proceeding or
        investigation with respect to a liability assumed by TTC pursuant
        to Sections 1.2(a)(iii), 1.2(a)(iv), 1.2(a)(vi) and 1.2(a)(vii),
        TTC shall use commercially reasonable efforts to conduct the
        Business so as to mitigate further damages related to such
        liability.  

             1.3  Purchase Price.  The purchase price to be paid by the
        Buyer for the Acquired Assets shall be SEVEN MILLION DOLLARS
        ($7,000,000), increased or decreased by the respective amounts by
        which the Working Capital (as defined in Section 1.6) exceeds or
        is less than $2,555,000 (the "Purchase Price"), payable by wire
        transfer or other delivery of immediately available funds.  The
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        Buyer and Seller shall agree upon an estimate of the Purchase
        Price no less than two business days prior to the Closing, such
        estimated Purchase Price to be paid at the Closing.

             As additional consideration for the Acquired Assets, TTC
        shall pay the Seller a royalty payment for each calendar year
        ending after the Closing Date through the calendar year ending
        December 31, 2000 equal to 7% of the amount by which (a) the
        gross revenues derived by TTC from the sale of products
        containing any of the following active ingredients:
        Azadirachtin, Neem Oil, Gliocladium 21, Paecyliomyces Fumaroses,
        Clove Oil or Rhizobium soybean growth enhancers (the "Active
        Ingredients") exceeds (b) a base amount (the "Base Amount").  Any
        amounts payable to Seller with respect to any calendar year
        hereunder shall be paid within 60 days of the end of such
        calendar year.  Within 60 days of the end of each calendar year
        through the year ending December 31, 2000, TTC shall deliver to
        the Seller a certificate signed by its chief financial officer
        certifying the gross revenues derived from the sale of products
        containing any of the Active Ingredients by TTC for such year.
        TTC shall keep complete and accurate books and records of such
        revenues and preserve such records for three years after the end
        of the applicable fiscal year.  Seller shall have the right,
        during normal business hours and upon reasonable notice to TTC,
        to inspect such books and records for purposes of auditing the
        accuracy of TTC's reports.  Any dispute relating to or in
        connection with this Section shall be submitted to the Neutral
        Accountants (as defined in Section 1.6(b)) for resolution.

             The Base Amount shall equal $14,000,000, except that for the
        year ending December 31, 1996, the Base Amount shall equal the
        product of (x) $14,000,000 times (y) a fraction, the numerator of
        which is the number of days from the Closing Date through
        December 31, 1996 and the denominator of which is 366.  The Base
        Amount shall be increased by the gross revenues from the sales of
        products whose active ingredients include one or more of the
        Active Ingredients and are derived from any business or assets
        acquired by TTC subsequent to the Closing Date (such gross
        revenues to calculated for the one-year period prior to the date
        of acquisition).  

             1.4  The Closing.

                  .4(a)     The closing of the transactions contemplated
        by this Agreement (the "Closing") shall take place at the offices
        of Hale and Dorr in Boston, Massachusetts, commencing at
        9:00 a.m. on the date which is five business days after the
        satisfaction or waiver of all conditions to the obligations of
        the Parties to consummate the transactions contemplated hereby
        (the "Closing Date").

                  .4(b)     At the Closing:

                      (i)   the Seller shall deliver to the Buyer the
        various certificates, instruments and documents referred to in
        Section 5.1; provided that Seller shall not be in default under
        this Section 1.4(b)(i) if the conditions specified in
        Section 5.1(b) have not been met because of the occurrence of an
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        Intervening Event (as defined in Section 8.2(a));

                     (ii)   the Buyer shall deliver to the Seller the
        various certificates, instruments and documents referred to in
        Section 5.2; provided that Buyer shall not be in default under
        this Section 1.4(b)(ii) if the conditions specified in
        Section 5.2(a) have not been met because of circumstances beyond
        Buyer's control;

                    (iii)   the Seller shall execute and deliver to TTC a
        bill of sale in the form attached hereto as Exhibit A and execute
        and deliver or obtain, as appropriate, such other instruments of
        conveyance (e.g., trademark assignments or patent assignments) as
        TTC may reasonably request in order to effect the sale, transfer,
        conveyance and assignment to TTC of valid ownership of the
        Acquired Assets other than the Margo Shares and the Neem Shares; 

                     (iv)   the Seller shall execute and deliver to TEIH
        stock certificates (in the case of Margo), stock powers,
        assignments and other appropriate instruments of conveyance
        necessary to transfer to TEIH ownership of the Margo Shares and
        the Neem Shares;

                      (v)   TTC shall execute and deliver to the Seller
        an instrument of assumption of liabilities in the form attached
        hereto as Exhibit B and such other instruments as the Seller may
        reasonably request in order to effect the assumption by TTC of
        the Assumed Liabilities; 

                     (vi)   the Seller and TTC shall execute and deliver
        to each other the lease of certain premises (the "Leased
        Premises") in the form attached hereto as Exhibit C;

                    (vii)   the Buyer shall pay to the Seller the
        estimated Purchase Price as specified in Section 1.3;

                   (viii)   the Seller shall deliver to TTC, or otherwise
        put TTC in possession and control of, all of the Acquired Assets
        set forth in Section 2.6(c) of the Disclosure Schedule; and 

                     (ix)   the Buyer and the Seller shall execute and
        deliver to each other a cross-receipt evidencing the transactions
        referred to above. 

             1.5  Allocation of Purchase Price.  The Buyer and the Seller
        agree to allocate the Purchase Price (and all other capitalizable
        costs), as soon as practicable following the Closing, among the
        Acquired Assets.  The Parties agree that such allocation will be
        made in the manner required by Section 1060 of the Internal
        Revenue Code of 1986, as amended.  

             1.6  Post-Closing Adjustments.  The Purchase Price set forth
        in Section 1.3 shall be subject to adjustment after the Closing
        Date as follows:  

                  .6(a)     On the 90th day after the Closing Date, the
        Seller shall prepare and deliver to TTC a statement of net assets
        reflecting only the Acquired Assets (other than the Margo Shares
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        and Neem Shares) and Assumed Liabilities (the "Initial Closing
        Statement") as of the close of business on the Closing Date
        (without giving effect to the transactions contemplated by this
        Agreement).  The Seller shall prepare the Initial Closing
        Statement in accordance with the accounting principles used in,
        and applied on a basis consistent with, the preparation of the
        Financial Statements (as defined in Section 2.4(a)).  The Initial
        Closing Statement shall also set forth the Seller's determination
        of the Purchase Price, as adjusted pursuant to this Section 1.6.
        Any Accounts Receivable as of the Closing Date which have not
        been collected by TTC on or prior to the 90th day after the
        Closing Date shall be written off and not appear as current
        assets on the Initial Closing Statement.  Such Accounts
        Receivable shall be assigned by TTC to the Seller immediately
        following the 90th day after the Closing Date, and any Accounts
        Receivable which have been so written off and are subsequently
        collected by TTC shall be promptly paid to the Seller.  Within 21
        days after the Closing Date, the Seller and TTC shall have
        jointly tested the quality and determined the quantity of the
        inventory of the Business as of the Closing Date, and the value
        of inventory as set forth in the Initial Closing Statement shall
        be (i) reduced to reflect any inventory that is obsolete, of
        below-standard quality, unusable or unsalable or a quantity of
        inventory that is less than that set forth on the Initial Closing
        Statement or (ii) increased to reflect a quantity of inventory
        that is more than that set forth on the Initial Closing
        Statement.

                  .6(b)     TTC shall deliver to the Seller within 30
        days after receiving the Initial Closing Statement a detailed
        statement describing its objections (if any) thereto.  Failure of
        TTC to so object to the Initial Closing Statement shall
        constitute acceptance thereof, whereupon the Initial Closing
        Statement shall be deemed to be the Closing Statement.  TTC and
        the Seller shall use reasonable efforts to resolve any such
        objections, but if they do not reach a final resolution within 15
        days after the Seller has received the statement of objections,
        TTC and the Seller shall engage Coopers & Lybrand (the "Neutral
        Accountants") to resolve any remaining objections.  The Neutral
        Accountants promptly shall determine whether the objections
        raised by TTC are appropriate.  The Initial Closing Statement
        shall be adjusted to the extent such objections are determined to
        be appropriate and, as so adjusted, shall be the "Closing
        Statement."  Such determination by the Neutral Accountants shall
        be conclusive and binding upon TTC and the Seller, absent fraud
        or manifest error.  Nothing herein shall be construed to
        authorize or permit the Neutral Accountants to determine (i) any
        question or matter whatever under or in connection with this
        Agreement except the determination of what adjustments, if any,
        must be made in one or more of the items reflected in the Initial
        Closing Statement, and (ii) an adjustment to an item on the
        Initial Closing Statement that is outside of the range defined by
        amounts as finally proposed by the Seller and TTC, respectively.

                  .6(c)     TTC and the Seller shall share equally the
        fees and expenses of the Neutral Accountants in connection with
        the resolution of any dispute pursuant to paragraph (b) above.
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                  .6(d)     If the Working Capital (as defined below) as
        shown on the Closing Statement exceeds $2,555,000.00, the
        Purchase Price shall equal $7,000,000 plus the amount of such
        excess.  

                  .6(e)     If the Working Capital as shown on the
        Closing Statement is less than $2,555,000.00, the Purchase Price
        shall equal $7,000,000 less the amount of such deficiency.  

                  .6(f)     If the Purchase Price as adjusted is more
        than the estimated Purchase Price paid at the Closing, TTC shall
        pay to the Seller, by wire transfer or other delivery of
        immediately available funds, within three business days after the
        date on which the Closing Statement is finally determined
        pursuant to this Section 1.6, an amount equal to such excess
        (plus interest thereon at 8% per annum from the Closing Date).
        If the Purchase Price as adjusted is less than the estimated
        Purchase Price paid at the Closing, the Seller shall pay to TTC,
        by wire transfer or other delivery of immediately available
        funds, within three business days after the date on which the
        Closing Statement is finally determined pursuant to this
        Section 1.6, an amount equal to such deficiency (plus interest
        thereon at 8% per annum from the Closing Date).  

                  .6(g)     "Working Capital" shall mean the difference
        between current assets and current liabilities (other than
        accounts payable to Margo in respect of goods in transit, which
        do not constitute an Assumed Liability), determined in accordance
        with United States generally accepted accounting principles,
        consistently applied.  

                  .6(h)     For purposes of Sections 1.6(d) and 1.6(e),
        Working Capital as shown on the Closing Statement shall be deemed
        to be increased by (i) the amount of capital expenditures made by
        the Seller with respect to the Mitchfield tolling facility up to
        a maximum of $90,000, (ii) the amount of expenditures made by the
        Seller in connection with purchasing accounting software related
        to the Business up to a maximum of $42,000, (iii) any other
        capital expenditures incurred by the Seller in connection with
        the Business after the date hereof and prior to the Closing Date
        which are approved in writing by TTC and (iv) if a dividend with
        respect to Margo's March 31, 1996 fiscal year has not been
        declared following the date hereof and prior to the Closing Date
        (with a record date prior to the Closing Date) on the Margo
        Shares, an amount equal to the United States dollar equivalent on
        the Closing Date of 800,000 rupees less Indian taxes that would
        be payable on a dividend of such amount.

                  .6(i)     If the Purchase Price is adjusted pursuant to
        this Section 1.6, the allocation of the Purchase Price among the
        Acquired Assets (other than the Margo Shares and the Neem Shares)
        as set forth in Section 1.5 shall be appropriately modified to
        reflect increases or decreases in the various asset categories
        which give rise to such adjustments.  

             1.7  Further Assurances.  At any time and from time to time
        after the Closing, at the request of the Buyer and without
        further consideration, the Seller shall execute and deliver such
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        other instruments of sale, transfer, conveyance and assignment
        and take such action as the Buyer may reasonably determine is
        necessary to transfer, convey and assign to the Buyer, and to
        confirm Buyer's rights to, title in and ownership of, the
        Acquired Assets and to place the Buyer in actual possession and
        operating control thereof.


                                   ARTICLE II

                  REPRESENTATIONS AND WARRANTIES OF THE SELLER

             The Seller represents and warrants to Buyer that the
        statements contained in this Article II are true and correct,
        except as set forth in the disclosure schedule attached hereto
        (the "Disclosure Schedule").  The Disclosure Schedule shall be
        arranged in sections corresponding to the numbered sections
        contained in this Article II. 

             2.1  Organization, Qualification and Corporate Power.  The
        Seller is a corporation duly organized, validly existing and in
        corporate and tax good standing under the laws of the state of
        its incorporation.  The Seller has all requisite corporate power
        and authority to carry on the businesses in which it is engaged
        and to own and use the properties owned and used by it.  

             2.2  Authority.  The Seller has all requisite power and
        authority to execute and deliver this Agreement and the Ancillary
        Agreements and to perform its obligations hereunder and
        thereunder.  The execution and delivery of this Agreement and the
        Ancillary Agreements and the performance by the Seller of this
        Agreement and the Ancillary Agreements and the consummation by
        the Seller of the transactions contemplated hereby and thereby
        have been duly and validly authorized by all necessary corporate
        action on the part of the Seller.  This Agreement has been duly
        and validly executed and delivered by the Seller and constitutes,
        and each of the Ancillary Agreements, upon its execution and
        delivery by the Seller, will constitute, valid and binding
        obligations of the Seller, enforceable against the Seller in
        accordance with their respective terms.  

             2.3  Noncontravention.  Neither the execution and delivery
        of this Agreement or the Ancillary Agreements by the Seller, nor
        the consummation by the Seller of the transactions contemplated
        hereby or thereby, will, directly or indirectly (with or without
        notice or lapse of time) (a) conflict with or violate any
        provision of the charter or By-laws of the Seller or any
        resolution adopted by the board of directors or the stockholders
        of the Seller, (b) to the knowledge of the Seller, conflict with
        or violate any of the provisions of the Organizational Documents
        (as defined in Section 2.8) of Margo or any resolution adopted by
        the board of directors or the stockholders of Margo, (c) except
        as set forth in Section 2.3 of the Disclosure Schedule, require
        on the part of the Seller any filing with, or any permit,
        authorization, consent or approval of, any Governmental Entity
        (other than Indian and Thai Governmental Entities) or give any
        Governmental Entity (other than Indian and Thai Governmental
        Entities) the right to challenge any of the transactions
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        contemplated by this Agreement or the Ancillary Agreements,
        (d) except as set forth in Section 2.3 of the Disclosure
        Schedule, with respect to the transfer of the Margo Shares,
        require on the part of the Seller any filing  with any
        Governmental Entity or require the granting to the Seller by any
        Governmental Entity of any permit, authorization, consent or
        approval, (e) except as set forth in Section 2.3 of the
        Disclosure Schedule, conflict with, result in a breach of,
        constitute a default under, result in the acceleration of, create
        in any party the right to accelerate, terminate, modify or cancel
        any contract, lease, sublease, license, sublicense, franchise,
        permit, indenture, agreement or mortgage for borrowed money,
        instrument of indebtedness, Security Interest (as defined below)
        or other arrangement to which the Seller or Margo is a party or
        by which the Seller or Margo is bound or to which any of their
        assets are subject (provided that to the extent such
        representation is made with respect to Margo, it is made only to
        the extent of Seller's knowledge), (f) result in the imposition
        of any Security Interest upon any of the Acquired Assets or
        (g) violate any order, writ, injunction, decree, statute, rule or
        regulation applicable to the Seller or to Margo or any of their
        properties or assets (provided that to the extent such
        representation is made with respect to Margo, it is made only to
        the extent of Seller's knowledge).  For purposes of this
        Agreement, "Security Interest" means any mortgage, pledge,
        security interest, encumbrance, charge, or other lien (whether
        arising by contract or by operation of law).

             2.4  Financial Statements.  The Seller has provided to the
        Buyer unaudited statements of net assets of the Business as at
        December 31, 1995 and September 30, 1995 and unaudited statements
        of operations for the periods then ended, which statements are
        attached hereto as Exhibit D (collectively, the "Financial
        Statements").  The Financial Statements have been prepared in
        accordance with the accounting principles and procedures set
        forth in Section 2.4 of the Disclosure Schedule applied on a
        consistent basis throughout the periods covered thereby and are
        consistent with the books and records of the Seller.  The Seller
        has provided to the Buyer the Balance Sheet and Profit and Loss
        Account of Margo as at and for the year ended March 31, 1995,
        which is attached hereto as Exhibit E (the "Margo Financial
        Statements").  To the knowledge of Seller, the Margo Financial
        Statements have been prepared in accordance with the accounting
        principles and procedures described in the notes thereto and
        present fairly the state of affairs and profits of Margo as of
        the respective dates thereof and for the periods referred to
        therein and are consistent with the books and records of Margo.

             2.5  Absence of Certain Changes.  To the knowledge of the
        Seller, since December 31, 1995, except as set forth in
        Section 2.5 of the Disclosure Schedule, (a) there has not been
        any material adverse change in the assets, business, financial
        condition or results of operations of the Business or Margo,
        (b) the Seller has not taken any of the actions set forth in
        paragraphs (a) through (j) of Section 4.3 and (c) the Board of
        Directors of Margo has not authorized Margo to take any of the
        actions set forth in paragraphs (a) through (j) of Section 4.3
        other than the Permitted Actions (as defined in Section 4.3).
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             2.6  Ownership and Condition of Assets.

                  .6(a)     The Seller is the true and lawful owner of,
        and has good title to, all of the Acquired Assets, free and clear
        of all Security Interests, except for those Security Interests
        that do not secure borrowings or other obligations and will not
        interfere with the continued use of the Acquired Assets by TTC
        following the Closing.  Upon execution and delivery by the Seller
        to TTC of the instruments of conveyance referred to in
        Section 1.4(b)(iii), TTC will become the true and lawful owner
        of, and will receive good title to, the Acquired Assets other
        than the Margo Shares and the Neem Shares, free and clear of all
        Security Interests other than those described above.  

                  .6(b)     Except for the Excluded Assets, the Acquired
        Assets include all of the assets primarily used for the conduct
        of the Business as presently conducted and include all of the
        Intellectual Property used in the Business as presently
        conducted.  The tangible Acquired Assets that are primarily used
        in the Business as conducted during the three-month period prior
        to the date hereof are, in the aggregate, free from material
        defects, and have been maintained in good operating condition and
        repair (subject to normal wear and tear).  

                  .6(c)     Section 2.6(c) of the Disclosure
        Schedule lists all Acquired Assets which are tangible personal
        property having an original cost of more than $25,000.

             2.7  Intellectual Property.

                  .7(a)     Upon execution and delivery by the Seller to
        TTC of the instruments of conveyance referred to in
        Section 1.4(b)(iii), each item of Intellectual Property owned by
        the Seller will be owned by TTC immediately following the
        Closing, and each item of Intellectual Property available for use
        by the Seller will be  available for use by TTC, subject to
        obtaining any required consents or approvals, on identical terms
        and conditions immediately following the Closing.  The Seller has
        taken reasonable measures to protect the proprietary nature of
        each item of Intellectual Property, and to maintain in confidence
        all trade secrets and confidential information, that it owns or
        uses in connection with the Business.  To the knowledge of the
        Seller except as set forth in Section 2.7(a) of the Disclosure
        Schedule, no other person or entity has any rights to any of the
        patents used in the Business or used by Margo (except pursuant to
        agreements or licenses specified in Section 2.7(c) or 2.7(d) of
        the Disclosure Schedule), and no other person or entity is
        infringing, violating or misappropriating any of the patents used
        in the Business or used by Margo.  

                  .7(b)     To the best knowledge of the Seller, the
        business, operations and activities of the Business and of Margo
        as presently conducted or as conducted at any time within the six
        years prior to the date of this Agreement, have not infringed or
        violated, or constituted a misappropriation of, and do not now
        infringe or violate, or constitute a misappropriation of, any
        patent rights of any other person or entity.  Except as specified
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        in Section 2.7(b) of the Disclosure Schedule, the Seller has not
        received any written complaint, claim or notice alleging any
        infringement, violation or misappropriation of any intellectual
        property rights of any other person or entity.

                  .7(c)     Section 2.7(c) of the Disclosure Schedule
        identifies each patent or trademark registration which has been
        issued or is owned by the Seller with respect to any Intellectual
        Property or, to the knowledge of Seller, has been issued to or is
        owned by Margo, identifies each pending patent application or
        application for trademark registration which the Seller has made
        or which the Seller owns with respect to any Intellectual
        Property or, to the knowledge of the Seller, which Margo has made
        or owns, and identifies each license or other agreement pursuant
        to which the Seller has granted any rights to any third party
        with respect to any such Intellectual Property.  The Seller has
        delivered or made available to the Buyer, correct and complete
        copies of all such patents, trademark registrations and
        applications, and has made available to the Buyer correct and
        complete copies of all other written documentation evidencing
        ownership of, and any claims or disputes relating to, each such
        item.  The Seller has delivered or made available to the Buyer
        correct and complete copies of all such licenses and agreements
        as amended to date.  The Seller has paid all maintenance fees
        required to be paid on or prior to the date hereof in respect of
        each item of Intellectual Property.

                  .7(d)     Section 2.7(d) of the Disclosure Schedule
        identifies each agreement (other than confidentiality, secrecy or
        nondisclosure agreements) pursuant to which the Seller uses or
        has the right to use any item of Intellectual Property that is
        owned by a party other than the Seller.  The Seller has supplied
        the Buyer with correct and complete copies of all licenses,
        sublicenses or other agreements (as amended to date) pursuant to
        which the Seller uses such Intellectual Property, all of which
        are listed on Section 2.7(d) of the Disclosure Schedule.  Except
        as set forth in Section 2.7(d) of the Disclosure Schedule, with
        respect to each such item of Intellectual Property:

                      (i)   with regard to such license, sublicense or
        other agreement, to the Seller's knowledge, no party is in breach
        or default, and no event has occurred which with notice or lapse
        of time would constitute a breach or default or permit
        termination, modification or acceleration thereunder; 

                     (ii)   to the Seller's knowledge, the underlying
        item of Intellectual Property is not subject to any outstanding
        judgment, order, decree, stipulation or injunction; and 

                    (iii)   Seller has not agreed to indemnify any person
        or entity for or against any interference, infringement,
        misappropriation or other conflict with respect to such item.

             2.8  Foreign Companies.  Section 2.8 of the Disclosure
        Schedule sets forth for each Foreign Company (a) its name and
        jurisdiction of incorporation, (b) the number of shares of
        authorized capital stock of each class of its capital stock,
        (c) the number of issued and outstanding shares of each class of
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        its capital stock, the names of the holders thereof and the
        number of shares held by each such holder, and (d) its directors
        and officers.  To the knowledge of Seller, Margo is a corporation
        duly organized, validly existing and in good standing under the
        laws of the jurisdiction of its incorporation.  To the knowledge
        of the Seller, Margo is duly qualified to conduct business and is
        in corporate and tax good standing under the laws of each
        jurisdiction in which the nature of its businesses or the
        ownership or leasing of its properties requires such
        qualification.  To the knowledge of Seller, Margo has all
        requisite corporate power and authority to carry on the
        businesses in which it is engaged and to own and use the
        properties owned and used by it.  The Seller has delivered to the
        Buyer correct and complete copies of the Certificate of
        Incorporation and Articles of Association of Margo, as amended
        and as in effect on the date hereof.  All of the issued and
        outstanding Margo Shares and Neem Shares are duly authorized,
        validly issued, fully paid and nonassessable.  Except as
        specified in Section 2.8 of the Disclosure Schedule, all shares
        of each Foreign Company that are held of record or owned
        beneficially by the Seller are held or owned free and clear of
        any restrictions on transfer, claims, Security Interests,
        options, warrants, rights of first refusal, rights, contracts,
        calls, commitments, equities and demands.  The transfer of the
        Margo Shares and the Neem Shares to TEIH pursuant to this
        Agreement will vest in TEIH full title to the Margo Shares and
        the Neem Shares, free and clear of all liens, encumbrances,
        claims, equities, options, calls, rights of first refusal, voting
        trusts, agreements and commitments whatsoever.  Except as set
        forth in Section 2.8 of the Disclosure Schedule, (i) there are no
        outstanding or authorized options, warrants, rights, agreements
        or commitments to which the Seller or, to the knowledge of
        Seller, Margo is a party or which are binding on any of them
        providing for the issuance, disposition or acquisition of any
        capital stock of Margo; (ii) to the knowledge of Seller, there
        are no outstanding stock appreciation, phantom stock or similar
        rights with respect to Margo; (iii) to the knowledge of Seller,
        there are no voting trusts, proxies, or other agreements or
        understandings with respect to the voting of any capital stock of
        Margo and; (iv) to the knowledge of Seller, Margo is not in
        default under or in violation of any provision of its
        Organizational Documents.  

             2.9  Contracts.

                  .9(a)     Section 2.9 of the Disclosure Schedule lists
        the following written contracts or agreements of the Seller which
        relate to the Acquired Assets or the Business:

                      (i)   any written contract or agreement
        establishing a partnership or joint venture or to which Margo or
        Neem Co. is a party other than purchase orders;

                     (ii)   any written contract or agreement (or group
        of related written contracts or agreements) which is reflected in
        the Grace Biopesticides Expense Budget (which reflects 1995
        (Grace/WRC), 1996 (Grace/WRC) and 1996 (Thermo/Offsite)) and
        which is included in Section 2.9 of the Disclosure Schedule (the
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        "Budget") (A) under which the Seller has created, incurred,
        assumed, or guaranteed (or may create, incur, assume, or
        guarantee) indebtedness (including capitalized lease
        obligations), or is obligated to make payments in the aggregate,
        involving more than $50,000, (B) which has imposed (or may
        impose) a Security Interest on any of the Acquired Assets,
        tangible or intangible or (C) which involves more than $25,000
        and has a noncancellable remaining term in excess of one year;

                    (iii)   any written contract or agreement concerning
        noncompetition (other than noncompetition agreements contained in
        a license agreement described in Section 2.9(a)(iv)) or, to the
        knowledge of Seller, concerning confidentiality (relating to any
        intellectual property used in the manufacturing operations of the
        Business as it is currently conducted or used currently in
        connection with products under late stage active development)
        other than written contracts or agreements which have been
        superseded by a license agreement described in
        Section 2.9(a)(iv);

                     (iv)   any written contract or agreement which
        includes the grant to or by the Seller of a license or the
        payment to or by the Seller of a royalty payment;

                      (v)   any written contract or agreement relating to
        the toll manufacturing of product for the Seller;

                     (vi)   any distribution agreement providing for
        distribution of product outside the United States;

                    (vii)   any written contract or agreement to which
        Margo Biocontrols PVT, Ltd., Polyagri Limited, HPI Products, Inc.
        or Mitchfield Company is a party; and

                   (viii)   any other written contract or agreement (or
        group of related written arrangements) not reflected in the
        Budget either involving more than $10,000 or having a
        noncancellable remaining term in excess of six months.

                  .9(b)     The Seller has delivered or made available to
        the Buyer a correct and complete copy of each written contract or
        agreement (as amended to date) listed in Section 2.9 of the
        Disclosure Schedule.  With respect to each written arrangement so
        listed, to the Seller's knowledge, no party is in breach or
        default, and no event has occurred which with notice or lapse of
        time would constitute a breach or default or permit termination,
        modification, or acceleration, under the written agreement or
        contract, nor is there any material dispute between the parties
        thereto.  Neither the Seller nor, to the knowledge of the Seller,
        any Foreign Company is a party to any oral contract, agreement or
        other arrangement which, if reduced to written form, would be
        required to be listed in Section 2.9 of the Disclosure
        Schedule under the terms of this Section 2.9.  

             2.10 Litigation.  Section 2.10 of the Disclosure
        Schedule identifies, and contains a brief description of, (a) any
        unsatisfied judgement, order, decree, stipulation or injunction
        relating to the Acquired Assets, the Business or, to the
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        knowledge of Seller, Margo and (b) any claim, action, suit or
        proceeding involving the Business or affecting the Acquired
        Assets, the Business or, to the knowledge of Seller, Margo which
        is currently pending or, to the knowledge of the Seller,
        threatened and (c) to the knowledge of Seller, any hearing or
        investigation involving the Business or affecting the Acquired
        Assets, the Business or Margo which is currently pending or
        threatened.

             2.11 Product Warranty.  The aggregate expenses incurred by
        the Seller in fulfilling its obligations under its guaranty,
        warranty, right of return (due to product defects) and indemnity
        provisions in connection with the Business during the most recent
        fiscal year did not exceed $50,000.

             2.12 Environmental Matters.
 
                  .12(a)    Except as set forth in Section 2.12(a) of the
        Disclosure Schedule, to the best knowledge of the Seller, the
        Seller has complied with all Environmental Laws (as defined
        below) applicable to the Acquired Assets or the Business, and
        Margo has complied with all Environmental Laws applicable to its
        business.  For purposes of this Agreement, "Environmental Law"
        means any federal, state, regional, county, local or foreign law,
        statute, rule or regulation or the common law relating to the
        environment or occupational health and safety, including without
        limitation any statute, regulation or order pertaining to
        (i) treatment, storage, disposal, generation and transportation
        of industrial, toxic or hazardous substances or solid or
        hazardous waste; (ii) air, water and noise pollution;
        (iii) groundwater and soil contamination; (iv) the release or
        threatened release into the environment of industrial, toxic or
        hazardous substances, or solid or hazardous waste, including
        without limitation emissions, discharges, injections, spills,
        escapes or dumping of pollutants, contaminants, pesticides or
        chemicals; (v) the protection of wild life, marine sanctuaries
        and wetlands, including without limitation all endangered and
        threatened species; (vi) storage tanks, vessels and containers;
        (vii) underground and other storage tanks or vessels, abandoned,
        disposed or discarded barrels, containers and other closed
        receptacles; (viii) health and safety of employees and other
        persons; and (ix) manufacture, processing, use, distribution,
        treatment, storage, disposal, transportation or handling of
        pollutants, contaminants, pesticides, chemicals or industrial,
        toxic or hazardous substances or oil or petroleum products or
        solid or hazardous waste.  As used above, the terms "release" and
        "environment" shall have the meaning set forth in the federal
        Comprehensive Environmental Compensation, Liability and Response
        Act of 1980 ("CERCLA"). 

                  .12(b)    Except as set forth in Section 2.12(b) of the
        Disclosure Schedule, neither the Seller, with respect to the
        Business, nor, to the best knowledge of the Seller, Margo has any
        obligation to remediate, clean up or dispose of any Materials of
        Environmental Concern.  For purposes of this Agreement,
        "Materials of Environmental Concern" means any chemicals,
        pollutants or contaminants, hazardous substances (as such term is
        defined under CERCLA), solid wastes and hazardous wastes (as such
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        terms are defined under the federal Resources Conservation and
        Recovery Act), pesticides, toxic materials, oil or petroleum and
        petroleum products or any other material subject to regulation
        under any Environmental Law.

             2.13 Legal Compliance.  To the knowledge of the Seller, the
        Seller is conducting and has conducted the business and
        operations of the Business and Margo is conducting and has
        conducted the operations of its business, in compliance in all
        material respects with all applicable federal, state, local and
        foreign laws, regulations and orders.  Except as set forth on
        Section 2.13 of the Disclosure Schedule, the Seller has not since
        January 1, 1992 received any written notice or communication from
        any Governmental Entity regarding any violation or alleged
        violation of such laws, regulations or orders.  

             2.14 Permits and Registrations.  Section 2.14 of the
        Disclosure Schedule sets forth a list of all Permits and the
        status thereof (including without limitation Pesticide
        Registrations and those issued or required under Environmental
        Laws but excluding Permits held by the Seller for its Columbia,
        Maryland site) issued to or held by the Seller relating to the
        Acquired Assets or the Business.  Other than Permits which TTC
        will have the right to use pursuant to the Lease, such listed
        Permits are the only Permits that are required to be held or
        obtained by the Seller to conduct the Business as presently
        conducted.  Each such Permit is in full force and effect and, to
        the knowledge of the Seller, no suspension or cancellation of
        such Permit is threatened.  To the knowledge of the Seller, the
        transfer of the Margo Shares to TEIH will not cause any Permit
        issued to or held by Margo to be rescinded, revoked or declared
        invalid.  Except as set forth in Section 2.14 of the Disclosure
        Schedule, each such Permit issued to or held by the Seller is
        assignable (subject to post-Closing notification) by the Seller
        to TTC without the consent or approval of any party and will
        continue in full force and effect following the Closing.
         
             2.15 Brokers' Fees.  Neither the Seller nor any Foreign
        Company has any liability or obligation to pay any fees or
        commissions to any broker, finder or agent with respect to the
        transactions contemplated by this Agreement.

             2.16 Books and Records.  The books, records, accounts,
        ledgers and files of the Seller relating to the Business made
        available to the Buyer are the actual and complete books,
        records, accounts, ledgers and files of the Seller.

             2.17 Customers and Suppliers.  Margo is the only supplier of
        any raw materials used in connection with the Business which is a
        party to a contract with the Seller with a remaining
        noncancellable term in excess of one year.  Section 2.17 of the
        Disclosure Schedule sets forth a list of each customer that
        accounted for more than 5% of the revenues of the Business during
        the last full fiscal year and the amount of revenues accounted
        for by such customer during such period.  Since January 1, 1995,
        Seller has received no written notice from any such customer that
        it will stop, or decrease the rate of, buying materials, products
        or components produced by, or services offered by, the Business.
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                                   ARTICLE III

                   REPRESENTATIONS AND WARRANTIES OF THE BUYER

             The Buyer represents and warrants to the Seller as follows:

             3.1  Organization.  Each of TTC and TEIH is a corporation
        duly organized, validly existing and in good standing under the
        laws of the jurisdiction of its incorporation.

             3.2  Authorization of Transaction.  Each of TTC and TEIH has
        all requisite power and authority to execute and deliver this
        Agreement and the Ancillary Agreements and to perform its
        obligations hereunder and thereunder.  The execution and delivery
        of this Agreement and the Ancillary Agreements by TTC and TEIH
        and the performance of this Agreement and the Ancillary
        Agreements and the consummation of the transactions contemplated
        hereby and thereby by TTC and TEIH have been duly and validly
        authorized by all necessary corporate action on the respective
        parts of TTC and TEIH.  This Agreement has been duly and validly
        executed and delivered by TTC and TEIH and constitutes a valid
        and binding obligation of TTC and TEIH, enforceable against them
        in accordance with its terms.

             3.3  Noncontravention.  Other than as required to be
        disclosed by the Seller on the Disclosure Schedule, neither the
        execution and delivery of this Agreement or the Ancillary
        Agreements by the Buyer, nor the consummation by the Buyer of the
        transactions contemplated hereby or thereby, will, directly or
        indirectly (with or without notice or lapse of time) (a) conflict
        or violate any provision of the charter or By-laws of TTC or TEIH
        or any resolution adopted by the board of directors or
        stockholders of TTC or TEIH, (b) require on the part of TTC and
        TEIH any filing with, or permit, authorization, consent or
        approval of, any Governmental Entity (other than Indian or Thai
        Governmental Entities) or give any Governmental Entity (other
        than Indian or Thai Governmental Entities) the right to challenge
        any of the transactions contemplated by this Agreement or the
        Ancillary Agreements, (c) conflict with, result in breach of,
        constitute a default under, result in the acceleration of, create
        in any party any right to accelerate, terminate, modify or
        cancel, or require any notice, consent or waiver under, any
        contract, lease, sublease, license, sublicense, franchise,
        permit, indenture, agreement or mortgage for borrowed money,
        instrument of indebtedness, Security Interest or other
        arrangement to which the Buyer is a party or by which it is bound
        or to which any of its assets is subject, or (d) violate any
        order, writ, injunction, decree, statute, rule or regulation
        applicable to the Buyer or any of its properties or assets.

             3.4  Brokers' Fees.  The Buyer has no liability or
        obligation to pay any fees or commissions to any broker, finder
        or agent with respect to the transactions contemplated by this
        Agreement.

             3.5  Status as Subsidiaries.  Each of TTC and TEIH is a
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        wholly-owned subsidiary of Thermo Ecotek Corporation.

             3.6  Financial Projections.  As part of its investigation of
        the business, Buyer has been given certain financial projections
        regarding the Business.  Buyer has taken responsibility for
        evaluating these financial projections.  There are uncertainties
        inherent in attempting to make projections, and Buyer is familiar
        with such uncertainties.  Buyer is not relying on such financial
        projections, and Seller shall have no liability of any kind to
        Buyer in respect of such financial projections; provided,
        however, that no representation is made hereunder by Buyer with
        respect to reliance on historical information.


                                   ARTICLE IV

                              PRE-CLOSING COVENANTS

             4.1  Reasonable Efforts.  Each Party shall use all
        reasonable efforts to take all actions and to do all things
        necessary, proper or advisable to consummate the transactions
        contemplated by this Agreement.

             4.2  Notices and Consents.  The Parties shall cooperate and
        shall use all reasonable efforts to obtain all such waivers,
        permits, consents, approvals or other authorizations from third
        parties and Governmental Entities, and to effect all such
        registrations, filings and notices with or to third parties and
        Governmental Entities, as may be necessary or desirable in
        connection with the transactions contemplated by this Agreement
        and the Ancillary Agreements (the "Consents") (including without
        limitation those listed in Sections 2.3, 2.8 and 2.14 of the
        Disclosure Schedule).  The Buyer shall make all filings,
        applications, requests for approval and notices which are
        required of a buyer or transferee in obtaining or effecting the
        Consents.  The Seller shall make all filings, applications,
        requests for approval and notices which are required of a seller
        or transferor in obtaining or effecting the Consents.  Each Party
        shall provide such information regarding itself and its business
        which the other Party may reasonably request for purposes of
        obtaining or effecting the Consents.  

             4.3  Operation of Business.  Except as contemplated by this
        Agreement, during the period from the date of this Agreement to
        the Closing, the Seller shall conduct the operations of the
        Business, and shall take no actions to cause Margo not to conduct
        the operations of its business, in the ordinary course of
        business and in accordance with past practice and custom.
        Without limiting the generality of the foregoing, prior to the
        Closing, except for the proposed loan of Rs. 325 lakhs to be
        obtained by Margo from the International Development Bank of
        India and the expenditure of funds materially in accordance with,
        and transactions contemplated by, the related budget
        (collectively, "the Permitted Actions") the Seller shall not, and
        shall take no actions to cause Margo to, without the written
        consent of the Buyer: 

                  .3(a)     acquire, sell, lease, encumber or dispose of
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        any assets relating to the Business or Margo's business, other
        than purchases and sales of assets in the ordinary course of
        business;

                  .3(b)     create, incur or assume any debt not
        currently outstanding (including obligations in respect of
        capital leases) in connection with the Business or Margo's
        business;

                  .3(c)     mortgage or pledge any of the property or
        assets of the Business or Margo's business or subject any such
        assets to any Security Interest;

                  .3(d)     sell, assign, transfer, license or sublicense
        any Intellectual Property used in the Business or Margo's
        business, other than in the ordinary course of business;

                  .3(e)     enter into, amend, terminate, or knowingly
        take or omit to take any action that would constitute a violation
        of or default under, or waive any rights under, any contract or
        agreement of a type that would be required to be disclosed in
        Section 2.9 of the Disclosure Schedule;

                  .3(f)     enter into any written contract or agreement
        (excluding purchase orders for Neem Oil) which creates a
        liability on the Seller's or Margo's part in excess of $25,000;

                  .3(g)     make or commit to make any capital
        expenditure in excess of $50,000 per item, or total capital
        expenditures in excess of $200,000 in the aggregate, in
        connection with the Business or Margo's business;

                  .3(h)     intentionally take any action or fail to take
        any action permitted by this Agreement with the knowledge that
        such action or failure to take action would result in (i) any of
        the representations and warranties of the Seller set forth in
        this Agreement becoming untrue or (ii) any of the conditions to
        the Closing set forth in Article V not being satisfied;

                  .3(i)     fail to take any action reasonably necessary
        to preserve the validity of any Intellectual Property or Permit,
        including the timely payment of all required maintenance fees; or

                  .3(j)     agree in writing or otherwise to take any of
        the foregoing actions.

             4.4  Full Access.  The Seller shall permit representatives
        of the Buyer to have full access (at all reasonable times, and in
        a manner so as not to interfere with the normal business
        operations of the Seller) to all premises, properties, financial
        and accounting records, contracts, other records and documents,
        and personnel, of or pertaining to the Business or, to the extent
        Seller has access thereto, the Foreign Companies.  The Seller
        shall keep TTC notified of all material developments in, shall
        provide copies of all filings made with respect to, and shall
        cooperate with TTC in connection with, the patent defenses
        described in Section 6.10 hereof.
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             4.5  Exclusivity.  The Seller shall not, and the Seller
        shall cause its Affiliates and each of its officers, directors,
        employees, representatives and agents not to, directly or
        indirectly, (a) encourage, solicit, initiate, engage or
        participate in discussions or negotiations with any person or
        entity (other than the Buyer) concerning any merger,
        consolidation, sale of material assets or other business
        combination involving the Business or (b) provide any non-public
        information concerning the business, properties or assets of the
        Business to any person or entity (other than the Buyer) except in
        the ordinary course of business so long as the recipient (which
        recipient may in no event include any person or entity which has
        indicated a desire to engage in any merger, consolidation, sale
        of material assets or other business combination involving the
        Business) of such information agrees to treat the information
        confidentially.  "Affiliate" shall mean, with respect to the
        Buyer or Seller, the Buyer's or Seller's parent company, and such
        parent company's direct or indirect majority-owned subsidiaries.


                                    ARTICLE V

                              CONDITIONS TO CLOSING

             5.1  Conditions to Obligations of the Buyer.  The obligation
        of the Buyer to consummate the transactions to be performed by it
        in connection with the Closing is subject to the satisfaction, or
        waiver by the Buyer, of the following conditions:

                  .1(a)     the Parties shall have (i) obtained all of
        the waivers, permits, consents, approvals or other authorizations
           from any Governmental Entity and from any third party with
             respect to any written agreement or contract listed in
         Section 2.9 of the Disclosure Schedule and effected all of the
        registrations, filings and notices (other than notices regarding
        Pesticide Registrations which are required to be filed only after
          the Closing), that the Buyer deems necessary or desirable to
         effect the transactions contemplated by this Agreement and (ii)
            obtained all other waivers, consents, approvals or other
        authorizations that the Buyer deems necessary or desirable except
          in the case of this clause (ii) for any which if not obtained
          would not have a material adverse effect on the right of the
         Buyer to own, operate or control the Acquired Assets or conduct
           the Business following the Closing or on the ability of the
           Parties to consummate the transactions contemplated by this
                                   Agreement.

                  .1(b)     the representations and warranties of the
        Seller set forth in Sections 2.1, 2.2 and 2.3(a) shall be true in
        all respects and the representations and warranties of the Seller
        set forth in the other sections of Article II shall be true and
        correct in all material respects (other than those
        representations and warranties which by their terms are qualified
        as to materiality, which representations and warranties shall be
        true and correct in accordance with their terms without any
        additional qualification as to materiality pursuant to this
        Section 5.1(b)) as of the Closing as if made as of the Closing,
        except for representations and warranties made as of a specific
PAGE
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        date, which shall be true and correct as of such specific date;

                  .1(c)     the Seller shall have performed or complied
        with in all material respects its agreements and covenants
        required to be performed or complied with under this Agreement as
        of or prior to the Closing;

                  .1(d)     no action, suit or proceeding shall be
        pending before any Governmental Entity wherein an unfavorable
        judgment, order, decree, stipulation or injunction would
        (i) prevent consummation of any of the transactions contemplated
        by this Agreement, (ii) cause any of the transactions
        contemplated by this Agreement to be rescinded following
        consummation or (iii) affect adversely the right of the Buyer to
        own, operate or control any of the Acquired Assets or to conduct
        the Business as currently conducted and as presently proposed to
        be conducted following the Closing, and no such judgment, order,
        decree, stipulation or injunction shall be in effect; 

                  .1(e)     the Seller shall have delivered to the Buyer
        a certificate (without qualification as to knowledge or
        materiality to or otherwise) to the effect that each of the
        conditions specified in clauses (b) through (d) of this
        Section 5.1 is satisfied in all respects; 

                  .1(f)     the Buyer shall have received the
        resignations of Martin B. Sherwin, K. R. Narasimhan and Ajit
        Vaswani, effective as of the Closing, as directors of Margo and
        the Organizational Documents of Margo shall have been amended to
        reflect the transfer of the Margo Shares;

                  .1(g)     the Seller shall have delivered to the Buyer
        a certificate of its Secretary attesting that attached to it are
        true and correct copies of (i) Seller's charter, (ii) Seller's
        by-laws and (iii) evidence reasonably satisfactory to Buyer of
        Seller's authorization to enter into this Agreement; and

                  .1(h)     the Seller shall have delivered to the Buyer
        a certificate of good standing from its jurisdiction of
        incorporation.

             5.2  Conditions to Obligations of the Seller.  The
        obligation of the Seller to consummate the transactions to be
        performed by it in connection with the Closing is subject to the
        satisfaction, or waiver by the Seller, of the following
        conditions:

                  .2(a)     the representations and warranties of the
        Buyer set forth in Sections 3.1, 3.2, 3.3(a) and 3.5 shall be
        true in all respects, and the representations and warranties of
        the Buyer set forth in the other sections of Article III shall be
        true and correct in all material respects (other than those
        representations and warranties which by their terms are qualified
        as to materiality, which representations and warranties shall be
        true and correct in accordance with their terms without any
        additional qualification as to materiality pursuant to this
        Section 5.2(a)) as of the Closing as if made as of the Closing,
        except for representations and warranties made as of a specific
PAGE
<PAGE>
        date, which shall be true and correct as of such date;

                  .2(b)     the Buyer shall have performed or complied in
        all material respects with its agreements and covenants required
        to be performed or complied with under this Agreement as of or
        prior to the Closing;

                  .2(c)     the Buyer shall have delivered to the Seller
        a certificate (without qualification as to knowledge or
        materiality or otherwise) to the effect that each of the
        conditions specified in clauses (a) and (b) of this Section 5.2
        is satisfied in all respects; 

                  .2(d)     the Parties shall have (i) obtained all of
        the waivers, permits, consents, approvals or other authorizations
        referred to in Section 4.2, and (ii) obtained all other waivers,
        permits, consents, approvals or other authorizations and effected
        all other registrations, filings and notices necessary or
        desirable in connection with the transactions contemplated by
        this Agreement, except for any waivers, permits, consents,
        approvals or authorizations in whose absence the Closing could be
        consummated without materially adversely affecting the Seller;

                  .2(e)     the Buyer shall have delivered to the Seller
        a certificate of the respective Secretaries of each of TTC and
        TEIH, attesting that attached to it are true and correct copies
        of (i) such corporation's charter, (ii) such corporation's
        by-laws and (iii) evidence reasonably satisfactory to Seller of
        such corporation's authority to enter into this Agreement; and

                  .2(f)     the Buyer shall have delivered to the Seller
        for each of TTC and TEIH a certificate of good standing, to the
        extent such certificate is available for TEIH, from its
        jurisdiction of incorporation.

             5.3  Waiver of Intervening Events

                  If the condition set forth in Section 5.1(b) has not
        been satisfied as a result of the occurrence of an Intervening
        Event (as defined in Section 8.2(a)) and the Buyer desires (but
        shall have no obligation to) to close the transactions
        contemplated by this Agreement despite the occurrence of the
        Intervening Event, the Buyer shall waive in writing the failure
        of the condition to be satisfied as a result of the Intervening
        Event.  If the Buyer so waives the condition and the Closing
        occurs, notwithstanding Section 7.1, Seller shall have no
        liability to Buyer arising out of the occurrence of the
        Intervening Event; provided, however, that any Damages (as
        defined in Section 7.1) incurred by the Buyer as a result of such
        Intervening Event shall be included for the purposes of
        calculating the total of all Damages pursuant to Section 7.7
        hereof.

                                   ARTICLE VI

                             POST-CLOSING COVENANTS

             6.1  Proprietary Information.
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                  (a)  Buyer and Seller acknowledge that, after the
        Closing, each of them may have access to Confidential Information
        of the other as a result of the arrangements set forth hereunder
        and in the Ancillary Agreements.  Throughout the term of such
        agreements, and for a period of ten years thereafter, the Parties
        shall hold in confidence such Confidential Information and shall
        not use or disclose any of it except as may be required by law in
        the reasonable judgment of such Party's counsel (in which event
        the Party so required to disclose such Confidential Information
        shall provide the other Party with prompt notice so that such
        other Party may seek a protective order or other appropriate
        remedy, and the Party so required to disclose such Confidential
        Information shall not oppose any action by the other Party to
        obtain such order or remedy).  For purposes of this subsection,
        the term "Confidential Information" shall mean information about
        a Party or its business, which information is obtained by the
        other Party while carrying out the activities under, or in
        connection with, this Agreement or the Ancillary Agreements.  

                  (b)  Buyer and Seller acknowledge that each of them may
        have in their possession, as a result of their prior
        relationships and the transactions contemplated by this
        Agreement, Confidential Information concerning proprietary
        technology which is exclusively owned by the other Party.  For a
        period of ten years from the Closing Date, the Parties agree to
        hold such Confidential Information in confidence and not to use
        or disclose any of it to third parties except as may be required
        by law in the reasonable judgment of such Party's counsel (in
        which event the Party so required to disclose such Confidential
        Information shall provide the other Party with prompt notice so
        that such other Party may seek a protective order or other
        appropriate remedy, and the Party so required to disclose such
        Confidential Information shall not oppose any action by the other
        Party to obtain such order or remedy).  For purposes of this
        subsection, the term "Confidential Information" shall mean all
        proprietary information, including but not limited to all trade
        secrets, know-how, inventions, formulae, data, specifications,
        techniques, procedures, samples, equipment, processes, computer
        programs, test results and evaluations, which relates to a
        Party's business and is owned exclusively by a Party without any
        right or license having been granted to the other Party.  

                  (c)  For purposes of subsections (a) and (b) of this
        Section, Confidential Information shall not include information
        which (i) is available to the public, or (ii) becomes available
        to the public through no act or omission of the obtaining Party,
        or (iii) becomes available to the obtaining Party from a third
        party that is not known by the obtaining Party to be under any
        obligation of confidentiality with respect thereto.  Each Party
        hereto shall inform its directors, officers, employees and
        representatives (collectively, its "Representatives") who may
        obtain Confidential Information of the existence of the
        obligations set forth in this Section and each Party shall be
        responsible for its Representatives' compliance with such
        obligations.  

             6.2  Solicitation and Hiring.  For a period of two years
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        after the Closing Date, the Seller shall not, and shall cause its
        Affiliates (and any of its or their respective directors,
        officers or employees) not to, either directly or indirectly, (a)
        solicit or attempt to induce any Employee (as defined below) to
        terminate his employment with the Buyer or (b) hire or attempt to
        hire any Employee other than a nonsalaried Employee whose
        employment has been terminated by the Buyer.  For purposes of
        this Agreement, "Employee" shall mean any person who either
        (i) was an employee of the Buyer on either the date of this
        Agreement or the Closing Date or (ii) was employed by the Seller
        in connection with the Business on either the date of this
        Agreement or the Closing Date and received an employment offer
        from the Buyer on or prior to the Closing Date.  

             6.3  Non-Competition; Referral of Customers.
 
                  .3(a)     For a period of five years after the Closing
        Date, the Seller shall not, and shall cause its Affiliates not
        to, either directly or indirectly, (i) develop, manufacture,
        market, sell, perform or offer any material, product, component
        or service which is competitive with any material, product,
        component or service developed (or under development),
        manufactured, marketed, sold or offered by the Seller in
        connection with the Business on or prior to the Closing Date or
        (ii) engage in any business competitive with the Business as
        conducted on the date of this Agreement or as of the Closing
        Date, in the United States or any other country.

                  .3(b)     The Seller, for itself or on behalf of its
        Affiliates, agrees that the duration and geographic scope of the
        noncompetition provision set forth in this Section 6.3 are
        reasonable.  In the event that any court determines that the
        duration or the geographic scope, or both, are unreasonable and
        that such provision is to that extent unenforceable, the Parties
        agree that the provision shall remain in full force and effect
        for the greatest time period and in the greatest area that would
        not render it unenforceable.  The Parties intend that this
        noncompetition provision shall be deemed to be a series of
        separate covenants, one for each and every county of each and
        every state of the United States of America and each and every
        political subdivision of each and every country outside the
        United States of America where this provision is intended to be
        effective.

                  .3(c)     The Seller shall, and shall cause its
        Affiliates to, refer all inquiries regarding the Business and its
        products and services to the Buyer.  

             6.4  Sharing of Data.

                  .4(a)     The Seller shall have the right for a period
        of three years following the Closing Date to have reasonable
        access to such books, records and accounts, including financial
        and tax information, correspondence, production records,
        employment records and other records that are transferred to the
        Buyer pursuant to the terms of this Agreement for the limited
        purposes of concluding its involvement in the Business as
        conducted by the Seller prior to the Closing Date and for
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        complying with its obligations under applicable securities, tax,
        environmental, employment or other laws and regulations.  The
        Buyer shall have the right for a period of three years following
        the Closing Date to have reasonable access to those books,
        records and accounts, including financial and tax information,
        correspondence, production records, employment records and other
        records that are retained by the Seller pursuant to the terms of
        this Agreement to the extent that any of the foregoing is needed
        by the Buyer in order to comply with its obligations under
        applicable securities, tax, environmental, employment or other
        laws and regulations.  Each Party shall preserve such books,
        records and accounts during such three-year period, and following
        the expiration of such three-year period, neither the Buyer nor
        the Seller shall destroy any such books, records or accounts
        retained by it without first providing the other Party with the
        opportunity to obtain or copy such books, records or accounts.  

                  .4(b)     In addition to all files and documents
        required to be provided pursuant to this Agreement or the
        Ancillary Agreements, promptly upon request by the Buyer made at
        any time following the Closing Date, the Seller shall authorize
        the release to the Buyer of all files pertaining primarily to the
        Acquired Assets or the business or operations of the Business
        held by any federal, state, county or local authorities, agencies
        or instrumentalities.  

             6.5  Use of Labels.  After the Closing, the Buyer shall not
        have the right to use the "Grace" name, except that the Seller
        hereby authorizes TTC to use the labels which constitute Acquired
        Assets and which contain the name "W. R. Grace & Co." or "Grace"
        and to affix such labels to products manufactured and sold as
        part of the Business for a period of one year from the Closing
        Date.  TTC shall use reasonable efforts to exhaust the supply of
        such labels within six months following the Closing Date.

             6.6  Cooperation in Litigation.  From and after the Closing
        Date, each Party shall fully cooperate with the other in the
        defense or prosecution of any litigation or proceeding already
        instituted or which may be instituted hereafter against or by
        such other Party relating to or arising out of the conduct of the
        Business prior to or after the Closing Date (other than
        litigation arising out of the transactions contemplated by this
        Agreement or the Ancillary Agreements).  The Party requesting
        such cooperation shall pay the reasonable out-of-pocket expenses
        incurred in providing such cooperation (including legal fees and
        disbursements) by the Party providing such cooperation and by its
        officers, directors, employees and agents, but shall not be
        responsible for reimbursing such Party or its officers,
        directors, employees and agents, for their time spent in such
        cooperation.

             6.7  Collection of Accounts Receivable and Contracts in
        Progress.  The Seller agrees that it shall forward promptly to
        the Buyer any monies, checks or instruments received by the
        Seller after the Closing Date with respect to the Accounts
        Receivable and the Contracts in Progress, except as otherwise
        provided in Section 1.6.
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             6.8  Employees.

                  .8(a)     Effective as of the Closing, the Seller shall
        terminate the employment of each of its employees designated on
        Schedule 6.8 attached hereto and TTC shall offer employment to
        each such employee, terminable at the will of TTC or as otherwise
        agreed to between the Buyer and such employee.  Any such employee
        shall (i) receive credit for his years of service with the Seller
        with respect to eligibility and vesting under any employee
        benefit plan of TTC, and (ii) shall be eligible for TTC's health
        insurance benefits without regard to any pre-existing condition.
        TTC shall provide any such employee with notice of such credit
        and benefits and of the severance benefits described below.  TTC
        shall have complete discretion to change any of the terms or
        conditions of employment, compensation or benefits relating to
        any such employee at any time.  TTC agrees that any such employee
        whose employment with TTC is terminated by TTC (other than for
        cause, as determined by TTC in its sole discretion) prior to
        November 1, 1996 shall receive from TTC severance benefits equal
        to those the employee would have received from the Seller on the
        Closing Date, which severance benefits are set forth on Schedule
        6.8 attached hereto.  The Seller hereby consents to the hiring of
        such employees by TTC and waives, with respect to the employment
        by TTC of such employees, any claims or rights the Seller may
        have against TTC or, to the extent such agreements relate to the
        Business, any such employee under any noncompetition,
        confidentiality or employment agreement.

             TTC agrees that it will make an independent determination of
        its decision to offer employment to any such employee and will
        independently determine the terms of such employment, without any
        representations from the Seller.

                  .8(b)     The Seller agrees that Dr. Martin B. Sherwin
        may, at TEIH's request, serve as a director of Margo and may, at
        TTC's request, serve as a director of TTC, so long as the
        requesting party, in each case, may desire.  

             6.9  Detachment of Machinery and Equipment.  Following the
        Closing, upon not less than 60 days' prior written notice by the
        Buyer, Seller shall cause, at its own cost and expense, the
        detachment from the Leased Premises of the machinery and
        equipment described in Schedule 6.9.  Following such detachment,
        the machinery and equipment shall be in a condition as good as
        that immediately prior to detachment.  The machinery and
        equipment shall be made available at the Leased Premises for
        transport by TTC at TTC's cost and expense.

             6.10 Defense of Patents.  Following the Closing, TTC shall
        assume the defense of the proceedings involving United States
        Patent Number 5,124,349 (the "United States Defense") and
        European Patent Number 0 436 257 (90250319.2) (the "European
        Defense").  The costs and expenses of the United States Defense
        shall be borne equally by TTC and the Seller following the
        Closing Date until $150,000 shall have been expended or 18 months
        shall have elapsed from the Closing Date.  The costs and expenses
        of the European Defense shall be borne equally by TTC and the
        Seller until $100,000 shall have been expended or 18 months shall
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        have elapsed from the Closing Date.  The Seller shall pay its
        share of such expenses promptly on demand.  All expenses in
        excess of such amounts shall be the sole responsibility of TTC.

             6.11 Intercompany Agreements.  All contracts, licenses,
        agreements, commitments or other arrangements between other units
        of the Seller or its Affiliates and the business unit which
        conducts the Business, whether written or oral, and whether
        express or implied, pursuant to which the other unit of the
        Seller or its Affiliates provides management, administrative,
        legal, financial, accounting, data processing, insurance, human
        resources, technical support or other services to the Business,
        or the use of any assets of the other unit of the Seller or its
        Affiliates other than the Acquired Assets, or pursuant to which
        rights, privileges or benefits are accorded to the Business as a
        unit of Seller, shall terminate as of the Closing.  After the
        Closing, Buyer shall have no rights or obligations under any
        similar contract, license, agreement, commitment or arrangement
        with Seller or its Affiliates except rights under the Ancillary
        Agreements.  

             6.12 Margo Consents.  To the extent that any approval,
        consent, authorization or permit which is required to be obtained
        from a Governmental Entity by TEIH in its capacity as a
        transferee of the Margo Shares is not obtained and the
        requirement to obtain such approval, consent, authorization, or
        permit becomes known to TEIH following the Closing Date, the
        Seller, commencing on the date TEIH gives the Seller notice of
        such requirement and continuing until such approval, consent,
        authorization or permit is obtained, shall use reasonable efforts
        to (i) provide to TEIH the benefits of the ownership of the Margo
        Shares, (ii) cooperate with TEIH to reach a reasonable and lawful
        arrangement designed to provide such benefits to TEIH during such
        period and (iii) enforce and exercise at the request of TEIH, or
        allow TEIH to enforce and exercise (and, solely for such purpose,
        the Seller hereby constitutes and appoints TEIH as its true and
        lawful attorney-in-fact) any rights of the Seller as owner of the
        Margo Shares; provided, however, that the reasonable costs and
        expenses of the Seller (including reasonable professional fees
        and expenses) incurred at TEIH's request with respect to any of
        the actions contemplated above shall be promptly paid or
        reimbursed by TEIH to the Seller.

             6.13 Maintenance of Pesticide Registrations.  To the extent
        that any assignment of a Pesticide Registration requires the
        filing of a notice following the Closing in order to become
        effective, the Seller and Buyer, commencing on the Closing Date
        and continuing until such transfer is effective, shall cooperate
        to maintain (including applying for any extensions) such
        Pesticide Registration in full force and effect and the Seller
        shall make such Pesticide Registration available for use by TTC.
        TTC shall promptly pay or reimburse to the Seller the reasonable
        costs and expenses (including filing or maintenance fees)
        incurred in performing its obligations under this Section 6.13.

                                   ARTICLE VII

                                 INDEMNIFICATION
PAGE
<PAGE>
             7.1  Indemnification by Seller.  The Seller shall indemnify
        the Buyer in respect of, and hold the Buyer harmless against, any
        and all debts, obligations and other liabilities (whether
        absolute, accrued, contingent, fixed or otherwise, or whether
        known or unknown, or due or to become due or otherwise), monetary
        damages, fines, fees, penalties, interest obligations,
        deficiencies, losses and expenses (including without limitation
        amounts paid in settlement, court costs, costs of investigators,
        fees and expenses of attorneys, accountants, financial advisors
        and other experts, and other expenses of litigation) ("Damages")
        incurred or suffered by the Buyer or any Affiliate thereof
        resulting from, relating to, constituting (with respect to
        Retained Liabilities) or arising out of:

                  .1(a)     any misrepresentation or breach of warranty
        by Seller contained in this Agreement;

                  .1(b)     any failure to perform any covenant or
        agreement of the Seller contained in this Agreement or the
        Ancillary Agreements; 

                  .1(c)     any Retained Liabilities; or 

                  .1(d)     any payments required to be made by the Buyer
        in respect of the liabilities assumed pursuant to
        Sections 1.2(a)(iii), 1.2(a)(iv), 1.2(a)(vi) and 1.2(a)(vii) in
        excess of the amounts specified in Section 1.2(c).

             7.2  Indemnification by Buyer.  The Buyer shall indemnify
        the Seller in respect of, and hold the Seller harmless against,
        any and all debts, obligations and other liabilities (whether
        absolute, accrued, contingent, fixed or otherwise, or whether
        known or unknown, or due or to become due or otherwise), monetary
        damages, fines, fees, penalties, interest obligations,
        deficiencies, losses and expenses (including without limitation
        amounts paid in settlement, court costs, costs of investigators,
        fees and expenses of attorneys, accountants, financial advisors
        and other experts, and other expenses of litigation) ("Damages")
        incurred or suffered by the Seller or any Affiliate thereof
        resulting from, relating to or arising out of:

                  .2(a)     any misrepresentation or breach of warranty
        by Buyer contained in this Agreement or the Ancillary Agreements;
        and

                  .2(b)     any failure to perform any covenant or
        agreement of the Buyer contained in this Agreement or the
        Ancillary Agreements. 

             7.3  Claims for Indemnification.  Whenever any claim shall
        arise for indemnification hereunder, the Party seeking
        indemnification (the "Indemnified Party") shall promptly notify
        the Party from whom indemnification is sought (the "Indemnifying
        Party") of the claim and, when known, the facts constituting the
        basis for such claim; provided, however, that no delay on the
        part of the Indemnified Party in notifying the Indemnifying Party
        shall relieve the Indemnifying Party from any liability or
PAGE
<PAGE>
        obligation hereunder except to the extent of any damage or
        liability caused by or arising out of such failure.  In the event
        of any such claim for indemnification hereunder resulting from or
        in connection with any claim or legal proceedings by a third
        party, the notice to the Indemnifying Party shall specify, if
        known, the amount or an estimate of the amount of the liability
        arising therefrom.  The Indemnified Party shall not settle or
        compromise any claim by a third party for which it is seeking
        indemnification hereunder without the prior written consent of
        the Indemnifying Party, unless the Indemnifying Party shall not
        have taken control of the defense of such claim as provided in
        Section 7.4 of this Agreement, after notification thereof
        pursuant to this Section 7.3, in which case the Indemnified Party
        may settle or compromise such claim without the Indemnifying
        Party's consent.

             7.4  Defense by the Indemnifying Party.  In connection with
        any claim for indemnification hereunder (other than a claim
        pursuant to Section 7.1(d) to the extent such claim and all prior
        claims pursuant to Section 7.1(d) aggregate less than $200,000)
        resulting from or arising out of any claim or legal proceeding by
        a third party, the Indemnifying Party at its sole cost and
        expense may, upon written notice to the Indemnified Party given
        at any time after the date of the notice of the claim from the
        Indemnified Party pursuant to Section 7.2, assume the defense of
        such claim or legal proceeding with counsel approved by the
        Indemnified Party, which approval shall not be unreasonably
        withheld, if (i) the Indemnifying Party acknowledges to the
        Indemnified Party in writing the Indemnifying Party's obligations
        to indemnify the Indemnified Party with respect to all elements
        of such claim, (ii) the third party seeks monetary damages only
        and (iii) an adverse resolution of the third party's claim would
        not have a material adverse effect on the goodwill or the
        reputation of the Indemnified Party or the Business or the future
        conduct of the business of the Indemnified Party or the Business.
        If the Indemnifying Party so assumes such defense, the
        Indemnified Party shall be entitled to participate in (but not
        control) such defense, with its counsel and at its own expense
        (except that the Indemnifying Party will be responsible for the
        reasonable fees and expenses of the separate co-counsel to the
        extent the Indemnified Party reasonably concludes that the
        counsel the Indemnifying Party has selected has a conflict of
        interest).  In addition, if the Indemnifying Party so assumes
        such defense, it shall take all steps necessary in the defense or
        settlement thereof; provided, however, that the Indemnifying
        Party shall not consent to any settlement or to the entry of any
        judgment with respect to a claim or legal proceeding which does
        not include a complete release of the Indemnified Party from all
        liability with respect thereto or which imposes any liability on
        the Indemnified Party without the written consent of the
        Indemnified Party.  If the Indemnifying Party does not (or is not
        permitted under the terms hereof to) assume the defense of any
        such claim or legal proceeding, (a) the Indemnified Party may
        defend against such claim or legal proceeding (with the
        Indemnifying Party responsible for the reasonable fees and
        expenses of counsel for the Indemnified Party if the Indemnifying
        Party is obligated to indemnify with respect to the claim or
        legal proceeding) in such manner as it may deem appropriate,
PAGE
<PAGE>
        including, but not limited to, settling such claim or legal
        proceeding on such terms as the Indemnified Party may deem
        appropriate, and (b) the Indemnifying Party shall be entitled to
        participate in (but not control) the defense of such action, with
        its counsel and at its own expense. 

             7.5  Payment of Indemnification Obligation.  All
        indemnification by the Indemnifying Party hereunder shall be
        effected by wire transfer of immediately available funds in the
        amount of the indemnification liability.

             7.6. Survival.  All representations, warranties, covenants,
        and obligations in this Agreement and any certificate delivered
        pursuant to this Agreement will survive the Closing.  If the
        Closing occurs, an Indemnifying Party will have no liability for
        indemnification with respect to Section 7.1(d) or with respect to
        any representation or warranty in Article II or Article III,
        other than those in Sections 2.1, 2.2, 2.3, 2.8, 3.1, 3.2, 3.3
        and 3.5, unless on or before the date which is 18 months
        following the Closing Date the Indemnifying Party is given notice
        of claim pursuant to Section 7.3 hereof.  However, the preceding
        sentence of this Section 7.6 will not apply to any claim based
        upon intentional misrepresentation or fraud.  A claim with
        respect to Sections 2.1, 2.2, 2.3, 2.8, 3.1, 3.2, 3.3 or 3.5, or
        a claim for indemnification or reimbursements not based upon any
        breach of a representation or warranty or not made pursuant to
        Section 7.1(d) may be made at any time.  

             7.7  Limitations on Amount.  An Indemnifying Party will have
        no liability for indemnification pursuant to Section 7.1(a) or
        7.2(a), as the case may be, until the total of all Damages with
        respect to Section 7.1(a) or 7.1(b), as the case may be, exceeds
        $150,000 and then only for the amount by which such Damages
        exceed $150,000 and are less than $7,000,000.  However, the
        preceding sentence of this Section 7.7 will not apply to any
        claim based upon intentional misrepresentation or fraud and will
        not apply to any breach of the representations and warranties set
        forth in Sections 2.1, 2.2, 2.3, 2.8, 3.1, 3.2, 3.3 or 3.5.  In
        calculating the total of Damages for purposes of this
        Section 7.7, amounts expended on a single liability, claim,
        action, suit, investigation, arbitration, proceeding or similar
        matter which aggregate less than $5,000 shall not be considered;
        provided, however, that amounts expended on matters that arise
        from the same violation or alleged violation, events, facts or
        circumstances shall be aggregated for purposes of this
        calculation.

             7.8  No Consequential or Lost Profit Damages.  No Party to
        this Agreement shall seek or be entitled to incidental, indirect
        or consequential damages or damages for lost profits from the
        operation of the Business in any claim relating to or arising
        under this Agreement. 


                                  ARTICLE VIII

                                   TERMINATION
PAGE
<PAGE>
             8.1  Termination of Agreement.  The Parties may terminate
        this Agreement prior to the Closing as provided below:

                  .1(a)     the Parties may terminate this Agreement by
        mutual written consent;

                  .1(b)     the Buyer may terminate this Agreement by
        giving written notice to the Seller in the event the Seller is in
        breach, and the Seller may terminate this Agreement by giving
        written notice to the Buyer in the event the Buyer is in breach,
        of any material representation, warranty, or covenant contained
        in this Agreement, which breach is not cured within 15 days of
        the receipt by the breaching Party of notice delivered in
        accordance with the provisions of Section 10.7 of this Agreement;
        or

                  .1(c)     the Buyer may terminate this Agreement by
        giving written notice to the Seller if the Closing shall not have
        occurred (i) on or before 70 days following the date of this
        Agreement if the Reserve Bank of India shall have disapproved the
        transfer of the Margo Shares prior to such date and (ii) on or
        before 120 days following the date of this Agreement by reason of
        the failure of any condition precedent under Section 5.1 hereof
        (unless the failure results primarily from a breach by the Buyer
        of any representation, warranty or covenant contained in this
        Agreement, in which event the period set forth in
        clause (ii) shall be the later of (x) the date which is 50 days
        after the date of disclosure of such breach to the Seller by the
        Buyer or (y) 120 days.)

                  (d)  the Seller may terminate this Agreement by giving
        written notice to the Buyer if the Closing shall not have
        occurred (i) on or before 70 days following the date of this
        Agreement if the Reserve Bank of India shall have disapproved the
        transfer of the Margo Shares and (ii) on or before 120 days
        following the date of this Agreement by reason of the failure of
        any condition precedent under Section 5.2 hereof (unless the
        failure results primarily from a breach by the Seller of any
        representation, warranty or covenant contained in this Agreement,
        in which event the period set forth in clause (ii) shall be the
        later of (x) the date which is 50 days after the disclosure of
        the breach to the Buyer by the Seller or (y) 120 days).

             8.2  Effect of Termination.  If either Party terminates this
        Agreement pursuant to Section 8.1, all obligations of the Parties
        hereunder shall terminate without any liability of either Party
        to the other Party.  Upon termination of this Agreement, that
        certain Purchase and Sale Agreement dated as of the date hereof
        between Buyer and Seller relating to the sale of the Margo Shares
        shall also terminate.  Notwithstanding the foregoing, each Party
        shall be liable to the other Party for breaches of this Agreement
        occurring prior to such termination except as set forth below:
                                            
                  (a)  If Buyer terminates this Agreement because the
        condition set forth in Section 5.1(b) has not been satisfied as a
        result of the occurrence of an "Intervening Event," Seller shall
        have no liability to Buyer arising out of the occurrence of the
        Intervening Event.  An "Intervening Event" shall mean (I) an
PAGE
<PAGE>
        event or circumstance which occurs after the date of this
        Agreement and prior to the Closing, which was not caused by the
        Seller's intentional actions or negligence and which is disclosed
        to the Buyer by the Seller prior to the Closing or (II) with
        respect to a representation qualified to the Seller's knowledge,
        the receipt by the Seller after the date of this Agreement and
        prior to the Closing of written notice of an event or
        circumstance of which the Seller had no knowledge as of the date
        of this Agreement and which was not caused by the Seller's
        intentional actions or negligence; and

                  (b)  If Buyer terminates this Agreement because the
        condition set forth in Section 5.1(b) has not been satisfied as a
        result of an occurrence or event other than (i) a fraudulent or
        intentional misrepresentation on the part of the Seller or (ii)
        an Intervening Event, then any claim brought by the Buyer in
        respect of the failure of such condition to occur shall (I) be
        brought no later than the earlier of (x) 450 days following the
        date of this Agreement or (y) the one-year anniversary of the
        date of termination of this Agreement and (II) allege Damages (as
        defined in Section 7.1) of no less than $150,000.  The Seller
        shall have the benefit of the provisions of Section 7.7 with
        respect to any such claim.


                                   ARTICLE IX

                                   DEFINITIONS

                  For purposes of this Agreement, each of the following
        defined terms is defined in the Section of this Agreement
        indicated below.

             Defined Term                               Section

             Accounts Receivable                        1.1(a)(i)
             Acquired Assets                            1.1(a)
             Affiliate                                  4.5
             Ancillary Agreements                       1.2(b)(ii)
             Assigned Contracts                         1.1(a)(v)
             Assumed Liabilities                        1.2(a)
             Buyer                                      Introduction
             CERCLA                                     2.12
             Closing                                    1.4(a)
             Closing Statement                          1.6(b)
             Closing Date                               1.4(a)
             Contracts in Progress                      1.1(a)(i)
             Damages                                    7.1
             Disclosure Schedule                        Article II
             Environmental Law                          2.12
             Excluded Assets                            1.1(b)
             Financial Statements                       2.4(a)
             Foreign Companies                          1.1(a)(vii)
             Governmental Entity                        1.1(a)(vii)
             Initial Closing Statement                  1.6(a)
             Intellectual Property                      1.1(a)(iv)
             Intervening Event                          8.2(a)
             Knowledge                                  1.2(d)
PAGE
<PAGE>
             Leased Premises                            1.4(b)(vi)
             Margo                                      1.1(a)(vii)
             Materials of Environmental Concern         2.12
             Neutral Accountants                        1.6(b)
             Ordinary Course of Business                1.2(a)(ii)
             Organizational Documents                   2.18
             Parties                                    Introduction
             Permits                                    1.1(a)(vi)
             Pesticide Registrations                    1.1(a)(vi)
             Purchase Price                             1.3
             Restricted Employee                        6.2
             Retained Liabilities                       1.2(b)
             Security Interest                          2.3
             Seller                                     Introduction
             TEIH                                       Introduction
             TTC                                        Introduction
             December 31, 1995 Balance Sheet            1.2(a)(i)
             Working Capital                            1.6(d)


                                    ARTICLE X

                                  MISCELLANEOUS

             10.1  Press Releases and Announcements.  Prior to the
        Closing, neither Party shall issue any press release or
        announcement relating to the subject matter of this Agreement
        without the prior written approval of the other Party, which
        shall not be unreasonably withheld; provided, however, that
        (a) either Party may issue a press release or make other public
        statements announcing the signing of this Agreement and the
        principal terms thereof and (b) either Party may make any public
        disclosure it believes in good faith is required by law or
        regulation or the applicable rules of a stock exchange (in which
        case the disclosing Party shall advise the other Party and
        provide it with a copy of the proposed disclosure prior to making
        such disclosure).

             10.2  No Third Party Beneficiaries.  This Agreement
         (including, without limitation, Section 6.8 hereof) shall not
        confer any rights or remedies upon any person other than the
        Parties and their respective successors and permitted assigns.  

             10.3  Entire Agreement.  This Agreement (including the
        documents referred to herein) constitutes the entire agreement
        between the Parties and supersedes any prior understandings,
        agreements, or representations by or between the Parties, written
        or oral, that may have related in any way to the subject matter
        hereof.  Notwithstanding the foregoing, the provisions of the
        Confidentiality Agreement, dated November 21, 1995, by and
        between Thermo Ecotek Corporation and Seller shall survive until
        the Closing, whereupon it shall terminate.

             10.4  Succession and Assignment.  This Agreement shall be
        binding upon and inure to the benefit of the Parties named herein
        and their respective successors and permitted assigns.  Neither
        Party may assign either this Agreement or any of its rights,
        interests, or obligations hereunder without the prior written
PAGE
<PAGE>
        approval of the other Party; provided that the Buyer may assign
        its rights, interests and/or obligations hereunder to an
        Affiliate of the Buyer. 

             10.5  Counterparts.  This Agreement may be executed in one
        or more counterparts, each of which shall be deemed an original
        but all of which together shall constitute one and the same
        instrument.

             10.6  Headings.  The section headings contained in this
        Agreement are inserted for convenience only and shall not affect
        in any way the meaning or interpretation of this Agreement. 

             10.7  Notices.  All notices, requests, demands, claims, and
        other communications hereunder shall be in writing.  Any notice,
        request, demand, claim, or other communication hereunder shall be
        deemed duly delivered four business days after it is sent by U.S.
        registered or certified mail, return receipt requested, postage
        prepaid, or one business day after it is sent via a reputable
        nationwide overnight courier service, in each case to the
        intended recipient as set forth below:

        If to the Seller:                  Copy to:

        W. R. Grace & Co. - Conn.          W. R. Grace & Co. - Conn.
        One Town Center Road               One Town Center Road
        Boca Raton, Florida  33486-1010    Boca Raton, Florida  
        33486-1010
        Telecopy: (407) 362-1865           Telecopy: (407) 362-1635
        Attention: Dr. Martin B. Sherwin   Attention: Secretary


        If to the Buyer:                   Copies to:

        Thermo Trilogy Corporation         Hale and Dorr
        81 Wyman Street                    60 State Street
        P.O. Box 9046                      Boston, MA 02109
        Waltham, MA 02254-9046             Telecopy:  (617) 526-5000
        Telecopy:  (617) 622-1296          Attention: Kenneth A. Hoxsie,
        Esq.
        Attention:  Brian D. Holt

        Thermo Ecotek International        Thermo Electron Corporation
          Holdings, Inc.                   81 Wyman Street
        81 Wyman Street                    P.O. Box 9036
        P.O. Box 9046                      Waltham, MA  02254-9036
        Waltham, MA  02254-9046            Telecopy:  (617) 622-1283
        Telecopy:  (617) 622-1296          Attention: Seth H. Hoogasian,
        Esq.
        Attention:  Brian D. Holt


        Either Party may give any notice, request, demand, claim, or
        other communication hereunder by personal delivery or telecopy,
        but no such notice, request, demand, claim, or other
        communication shall be deemed to have been duly given unless and
        until it actually is received by the individual for whom it is
        intended.  Any notice sent by telecopy shall be followed by a
PAGE
<PAGE>
        confirmation copy sent by reputable overnight business courier
        service.  Either Party may change the address to which notices,
        requests, demands, claims, and other communications hereunder are
        to be delivered by giving the other Party notice in the manner
        herein set forth.

             10.8  Governing Law.  This Agreement shall be governed by
        and construed in accordance with the internal laws (and not the
        law of conflicts) of the State of Delaware.

             10.9  Amendments and Waivers.  The Parties may mutually
        amend any provision of this Agreement at any time prior to the
        Closing.  No amendment of any provision of this Agreement shall
        be valid unless the same shall be in writing and signed by each
        of the Parties.  No waiver by either Party of any default,
        misrepresentation, or breach of warranty or covenant hereunder,
        whether intentional or not, shall be deemed to extend to any
        prior or subsequent default, misrepresentation, or breach of
        warranty or covenant hereunder or affect in any way any rights
        arising by virtue of any prior or subsequent such occurrence.

             10.10  Severability.  Any term or provision of Section 6.3
        that is invalid or unenforceable in any situation in any
        jurisdiction shall not affect the validity or enforceability of
        the remaining terms and provisions hereof or the validity or
        enforceability of the offending term or provision in any other
        situation or in any other jurisdiction.  If the final judgment of
        a court of competent jurisdiction declares that any term or
        provision of such Section is invalid or unenforceable, the
        Parties agree that the court making the determination of
        invalidity or unenforceability shall have the power to reduce the
        scope, duration, or area of the term or provision, to delete
        specific words or phrases, or to replace any invalid or
        unenforceable term or provision with a term or provision that is
        valid and enforceable and that comes closest to expressing the
        intention of the invalid or unenforceable term or provision, and
        such Section shall be enforceable as so modified after the
        expiration of the time within which the judgment may be appealed.

             10.11  Expenses.  Except as specifically set forth in this
        Agreement, each Party shall bear its own costs and expenses
        (including legal fees and expenses) incurred in connection with
        this Agreement and the transactions contemplated hereby.  In the
        event of any litigation, claim, proceeding or arbitration with
        respect to this Agreement or the Ancillary Agreements, the
        prevailing Party shall be paid its reasonable legal fees and
        expenses by the opposing Party.

             10.12  Specific Performance.  Each Party acknowledges and
        agrees that the other Party would be damaged irreparably in the
        event any of the provisions of Sections 6.1, 6.2 and 6.3 hereof
        are not performed in accordance with their specific terms or
        otherwise are breached.  Accordingly, each Party agrees that the
        other Party shall be entitled to an injunction or injunctions to
        prevent breaches of such provisions and to enforce specifically
        the terms and provisions thereof in any action instituted in any
        court of the United States or any state thereof having
        jurisdiction over the Parties and the matter, in addition to any
PAGE
<PAGE>
        other remedy to which it may be entitled, at law or in equity.
        Nothing herein shall preclude any Party from enforcing any remedy
        of specific performance to which it may be entitled pursuant to
        the breach of any other provision hereof.

             10.13  Submission to Jurisdiction.  Each Party (a) submits
        to the jurisdiction of any state or federal court sitting in the
        State of Delaware in any action or proceeding arising out of or
        relating to this Agreement or the Ancillary Agreements (other
        than the Lease), (b) agrees that all claims in respect of the
        action or proceeding may be heard and determined in any such
        court, and (c) agrees not to bring any action or proceeding
        arising out of or relating to this Agreement or the Ancillary
        Agreements in any other court (other than actions or proceedings
        arising out of or relating to the Lease, which shall be brought
        in any state or federal court sitting in the State of Maryland).
        Each Party hereby waives any defense of inconvenient forum to the
        maintenance of any action or proceeding so brought and waives any
        bond, surety or other security that might be required of the
        other Party with respect thereto.  Either Party may make service
        on the other Party by sending or delivering a copy of the process
        to the Party to be served at the address and in the manner
        provided for the giving of notices in Section 10.7.  Nothing in
        this Section 10.13, however, shall affect the right of either
        Party to serve legal process in any other manner permitted by
        law.

             10.14  Construction.  The language used in this Agreement
        shall be deemed to be the language chosen by the Parties hereto
        to express their mutual intent, and no rule of strict
        construction shall be applied against either Party.  Any
        reference to any federal, state, local, or foreign statute or law
        shall be deemed also to refer to all rules and regulations
        promulgated thereunder, unless the context requires otherwise.  

             10.15  Incorporation of Exhibits and Schedules.  The
        Exhibits and Schedules identified in this Agreement are
        incorporated herein by reference and made a part hereof.


             IN WITNESS WHEREOF, the Parties hereto have executed this
        Agreement as of the date first above written. 

                                      Buyer:

                                      THERMO TRILOGY CORPORATION


                                      By:________________________________

                                      Title:_____________________________


                                      THERMO ECOTEK INTERNATIONAL
                                        HOLDINGS, INC.


                                      By:
PAGE
<PAGE>

                                      Title:

                                      Seller:

                                      W. R. GRACE & CO.-CONN.


                                      By:________________________________

                                      Title:_____________________________


        Thermo Ecotek Corporation
        join in this Agreement
        solely for the purpose
        of guaranteeing Buyer's
        obligations pursuant to
        Sections 1.4(b), 1.6(d),
        6.1, 6.4, 6.6, 6.8, 7.2 
        and 10.4 hereunder.

        THERMO ECOTEK CORPORATION

        By:______________________


                                                                Exhibit 4.0

                             FISCAL AGENCY AGREEMENT

                                      among

                      THERMO ECOTEK CORPORATION, as Issuer,


                    THERMO ELECTRON CORPORATION, as Guarantor

                                       and

                         CHEMICAL BANK, as Fiscal Agent



                           Dated as of March 14, 1996




                        U.S. $33,000,000 Principal Amount

        Non-Interest Bearing Convertible Subordinated Debentures Due 2001
PAGE
<PAGE>
                                    CONTENTS

             Heading                                           Page


        1.   The Securities                                     1

        2.   Appointment of Agents and Security Registrar       3

        3.   Registration of Transfer and Exchange; 
                  Restrictions on Transfer                      4

        4.   Closing Date; Exchange of Regulation S 
                  Global Security                               7

        5.   Payment                                            9

        6.   Redemption                                        11

        7.   Conversion of Securities                          13

        8.   Surrendered Securities                            19

        9.   Mutilated, Destroyed, Stolen or Lost 
                  Securities                                   19

        10.  Signatures                                        19

        11.  Agreements Concerning Agents                      20

        12.  Offices, Resignation, Successors, Etc. of 
                  Agents, Paying, Conversion and 
                  Transfer Agencies                            23 

        13.  Taxes                                             26

        14.  Meetings and Votes of Holders                     26

        15.  Merger, Consolidation or Sale of Assets           30

        16.  Governing Law                                     31

        17.  Amendments                                        31

        18.  Agent for Service of Process                      32

        19.  Notices                                           32

        20.  Counterparts                                      34
PAGE
<PAGE>
        Exhibit A-     Form of Registered Security
                       Form of Bearer Security

        Exhibit B-     Form of Regulation S Global Security

        Exhibit C-     Form of Certificate to be given by the Euroclear 
                       Operator or Cedel with respect to the exchange of
                       all or a portion of the Regulation S Global
                       Security for Bearer Securities

        Exhibit D-     Form of Certificate of Beneficial Ownership for
                       Bearer Securities to be provided to the Euroclear
                       Operator or Cedel

        Exhibit E-     Form of Certificate of Beneficial Ownership for
                       Registered Securities to be provided to the 
                       Euroclear Operator or Cedel

        Exhibit F-     Form of Certificate to be given by the Euroclear
                       Operator or Cedel with respect to the exchange of 
                       all or a portion of the Regulation S Global 
                       Security for Registered Regulation S Securities
PAGE
<PAGE>
             FISCAL AGENCY AGREEMENT, dated as of March 14, 1996 (this
        "Agreement"), among THERMO ECOTEK CORPORATION, a corporation
        duly organized and validly existing under the laws of the State
        of Delaware (the "Company"), THERMO ELECTRON CORPORATION, a
        corporation duly organized and validly existing under the laws
        of the State of Delaware (the "Guarantor"), and CHEMICAL BANK, a
        banking corporation duly organized and validly existing under
        the laws of the State of New York (the "Fiscal Agent").

             1.   The Securities.

                  (a)  The Company has, by a Subscription Agreement,
        dated March 7, 1996 (the "Subscription Agreement"), among the
        Company, the Guarantor and the managers named therein (the
        "Managers"), agreed to issue and sell to the Managers U.S.
        $33,000,000 aggregate principal amount of its Non-Interest
        Bearing Convertible Subordinated Debentures Due 2001 (hereinafter
        referred to as the "Initial Securities" and together with the
        Over-Allotment Securities (as defined below), if any, the
        "Securities").  In addition, the Company has granted an option
        to the Managers to subscribe for up to an additional U.S.
        $4,000,000 principal amount of Securities (the "Over-Allotment
        Securities") solely to cover over-allotments, if any.  The
        amount of Securities that may be issued hereunder may be
        increased by agreement among Lehman Brothers International
        (Europe) (the "Lead Manager"), the Company, the Guarantor and
        the Fiscal Agent, and such additional securities shall be
        "Securities" hereunder.  The due and punctual payment of
        principal and Additional Amounts (as defined in Section 2 of the
        Securities) on the Securities when and as the same shall become
        due and payable, whether at maturity, upon redemption or
        otherwise, are unconditionally guaranteed on a subordinated
        basis by the Guarantor.  The Securities shall not bear interest.

                  (b)  Pursuant to the Subscription Agreement, the
        Managers (or their affiliates) may sell the Securities to persons
        who are not "U.S. Persons" (as such term is defined in Regulation
        S promulgated by the United States Securities and Exchange
        Commission (the "SEC") pursuant to the Securities Act of 1933,
        as amended (the "Securities Act")) in transactions that meet the
        requirements of Regulation S.

                  (c)  The Securities will initially be issued in the
        form of a temporary global debenture in bearer form without
        conversion rights having endorsed thereon the guarantee of the
        Guarantor (the "Guarantee"), which will be deposited with a
        depository in London for Cedel and Euroclear for the accounts of
        the subscribers of such Securities on the Closing Date (as
        defined herein).  Upon deposit of the temporary global debenture,
        Cedel or Euroclear, as the case may be, will credit each
        subscriber with a principal amount of Securities equal to the
        principal amount thereof for which it has subscribed and paid,
        substantially in the form of Exhibit B hereto (the "Regulation S
        Global Security").  As hereinafter provided, the Regulation S

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        Global Security may subsequently be exchanged for Securities in
        printed definitive form with the Guarantees endorsed thereon
        either as bearer Securities ("Bearer Securities") in
        denominations of U.S. $1,000 and U.S. $10,000, or  fully
        registered Securities ("Registered Regulation S Securities") in
        denominations of U.S. $1,000 and integral multiples thereof, in
        accordance with the provisions of Section 3(c).  Bearer
        Securities shall be substantially in the form of Exhibit A
        hereto.  Registered Regulation S Securities also shall be
        substantially in the form of Exhibit A hereto.  The Securities
        which are not Bearer Securities or the Regulation S Global
        Security are hereinafter collectively referred to as the
        "Registered Securities."

                  (d)  During the period beginning on the Closing Date
        and ending on the date which is three years (or the then
        applicable holding period under Rule 144(k) under the Securities
        Act (or successor provision)) after the later of the date of
        original issuance thereof and the last date on which the Company
        or any affiliate of the Company was the owner thereof (or any
        predecessor), all Registered Securities and all Securities issued
        upon registration of transfer of or in exchange for such
        Securities, shall be "Restricted Securities" and shall be subject
        to the restrictions on transfer in Section 3 hereof; provided,
        however, that the term "Restricted Securities" shall not include
        Registered Securities as to which such restrictions on transfer
        have been terminated in accordance with Section 3(e) hereof. 
        All Restricted Securities shall bear the legend required by
        Section 3(d) hereof.

                  (e)  The Securities will be convertible as provided in
        Section 4 of the Registered Securities and the Bearer Securities
        and Section 7 hereof.  The Securities may be redeemed by the
        Company as provided in Section 3 of the Registered Securities and
        the Bearer Securities and Section 6 hereof.  The Securities will
        be subordinated as provided in Section 7 of the Registered
        Securities and the Bearer Securities.  The Registered Securities,
        the Bearer Securities and the Regulation S Global Security shall
        contain such appropriate insertions, omissions, substitutions and
        other variations as are required or permitted by this Agreement
        and may have such letters, numbers or other marks of
        identification and such legends or endorsements placed thereon as
        may, consistent herewith, be determined by the officer of the
        Company executing such Securities, as evidenced by his execution
        of such Securities.

                  (f)  The Company in issuing the Securities shall use
        CUSIP numbers, and the Fiscal Agent may use such CUSIP numbers in
        any notice of redemption with respect to the Securities.  The
        Company shall obtain a CUSIP number for the Registered Regulation
        S Securities.  In addition, the Company shall obtain an ISIN
        number and a Common Code for the Regulation S Global Security,
        the Bearer Securities and the Registered Regulation S Securities.

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                  (g)  Pursuant to the Subscription Agreement, the
        Managers (or their affiliates) may sell the Securities to persons
        who are not persons within the United States or its possessions
        or "United States persons" as defined in the Internal Revenue
        Code except as provided in U.S. Treasury Regulation Section
        1.163-5(c)(2)(i)(D).  In compliance with United States tax laws
        and regulations, Bearer Securities may not be offered or sold
        during the 40-day period beginning on the Closing Date, or at
        any time if part of a Manager's unsold allotment, to a person
        who is within the United States or to a United States person
        other than (a) foreign branches of United States financial
        institutions if such institutions agree in writing to comply
        with the requirements of Section 165(j)(3)(A), (B), or (C) of
        the Internal Revenue Code of 1986, as amended, and the
        regulations thereunder, (b) United States offices of exempt
        distributors, or (c) United States offices of international
        organizations or foreign central banks.  United States tax laws
        and regulations also require that Bearer Securities not be
        delivered within the United States.

                  (h)  The Company will use its reasonable best efforts
        to have the Securities approved for listing on the Luxembourg
        Stock Exchange or such other exchange as shall be agreed upon by
        the Managers and the Company, as soon as practicable after the
        date hereof.

             2.   Appointment of Agents and Security Registrar.

                  (a)  The Company and the Guarantor hereby appoint
        Chemical Bank, at present having its principal corporate trust
        office at 450 West 33rd Street, New York, New York 10001, and
        having its main office in London at Chemical Bank House, 125
        London Wall, London EC2Y 5AJ, England, as their fiscal agent in
        respect of the Securities and the Guarantees upon the terms and
        subject to the conditions herein set forth. (Chemical Bank and
        its successor or successors as such fiscal agent qualified and
        appointed in accordance with Section 12 hereof are herein called
        the "Fiscal Agent.") The Fiscal Agent shall have the powers and
        authority granted to and conferred upon it herein and in the
        Securities, and such further powers and authority, acceptable to
        it, to act on behalf of the Company and the Guarantor as the
        Company and the Guarantor may hereafter grant to or confer upon
        it.

                  (b)  The Company and the Guarantor hereby appoint
        Chemical Bank, at present located at 450 West 33rd Street, New
        York, New York 10001, and having its main office in London at
        Chemical Bank House, 125 London Wall, London EC2Y 5AJ, England,
        as their paying agent in respect of the Securities and the
        Guarantees upon the terms and subject to the conditions herein
        set forth. (Chemical Bank and its successor or successors as such
        paying agent qualified and appointed in accordance with Section
        12 hereof are herein called the "Paying Agent.") The Paying Agent
        shall have the powers and authority granted to and conferred

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        upon it herein and in the Securities, and such further powers
        and authority, acceptable to it, to act on behalf of the Company
        and the Guarantor as the Company and the Guarantor may hereafter
        grant to or confer upon it.  As used herein, "paying agencies"
        shall mean paying agencies maintained by the Company as provided
        in Section 12(f) hereof.

                  (c)  The Company hereby appoints Chemical Bank, at
        present located at 450 West 33rd Street, New York, New York
        10001, and having its main office in London at Chemical Bank
        House, 125 London Wall, London EC2Y 5AJ, England, as its
        conversion agent in respect of the Securities upon the terms and
        subject to the conditions herein set forth. (Chemical Bank and
        its successor or successors as such conversion agent qualified
        and appointed in accordance with Section 12 hereof are herein
        called the "Conversion Agent," and the Paying Agent, the
        Conversion Agent, the Transfer Agents (as herein defined) and the
        Fiscal Agent are sometimes herein referred to severally as an
        "Agent" and, collectively, as the "Agents.").  The Conversion
        Agent shall have the powers and authority granted to and
        conferred upon it herein and in the Securities, and such further
        powers and authority, acceptable to it, to act on behalf of the
        Company as the Company may hereafter grant to or confer upon it.
        As used herein, "conversion agencies" shall mean conversion
        agencies maintained by the Company as provided in Section 12(f)
        hereof.

                  (d)  The Company shall cause to be kept at the
        principal corporate trust office of the Fiscal Agent a register
        (the registers maintained in such office and in any other office
        or agency designated for such purpose (which office shall be
        located outside of the United Kingdom) being herein sometimes
        collectively referred to as the "Security Register") in which,
        subject to such reasonable regulations as the Fiscal Agent may
        prescribe, the Company shall provide for the registration of
        Registered Securities and of transfers of Registered Securities.
         The Fiscal Agent is hereby appointed "Security Registrar" for
        the purpose of registering Registered Securities and transfers
        of Registered Securities as herein provided.

             3.   Registration of Transfer and Exchange; Restrictions on
        Transfer.

                  (a)  Upon surrender for registration of transfer of any
        Registered Security at any office or agency designated for such
        purpose by the Company pursuant to Section 12(g) hereof, the
        Company shall execute, and the Fiscal Agent shall authenticate,
        register and deliver, in the name of the designated transferee
        or transferees, one or more new Registered Securities of any
        authorized denominations and of a like aggregate principal
        amount, having endorsed thereon a Guarantee duly executed by the
        Guarantor, and bearing such restrictive legends as may be
        required by this Agreement; provided, however, that, with
        respect to any Registered Security that is a Restricted

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        Security, the Fiscal Agent shall not register the transfer of
        such Security unless the conditions in Sections 3(b) hereof
        shall have been satisfied.  The holder of each Restricted
        Security, by such holder's acceptance thereof, agrees to be
        bound by the transfer restrictions set forth herein and in the
        legend on such Restricted Security.

                  (b)  Whenever any Restricted Security is presented or
        surrendered for registration of transfer or exchange for a
        Registered Security registered in a name other than that of the
        holder, no registration of transfer or exchange shall be made
        unless the Fiscal Agent has received transfer documentation
        indicating that the transfer is being made pursuant to an
        exemption from, or a transaction not otherwise subject to, the
        registration requirements of the Securities Act.  For purposes
        of this Section 3(b), the Transfer Notice set forth on the
        reverse of such Security shall be completed and delivered to the
        Fiscal Agent.  In addition, the Company and the Fiscal Agent may
        require that the registered holder deliver an opinion of
        counsel, certifications or other information acceptable to them
        in form and substance.  The Fiscal Agent shall notify the
        Company upon receipt of such Transfer Notice and the Company
        shall immediately advise the Fiscal Agent as to whether an
        opinion of counsel, certifications or other information as
        described herein shall be required for such transfer.

                  (c)  Bearer Securities may, at the option of the holder
        thereof, be exchanged at, subject to applicable laws and
        regulations, the offices of the paying agencies in London and,
        if the Securities are listed on the Luxembourg Stock Exchange
        and so long as listed thereon, Luxembourg or as designated by
        the Company for such purposes pursuant to Section 12(g), for an
        equal aggregate principal amount of Registered Securities in
        denominations of $1,000 and integral multiples thereof and/or
        Bearer Securities of authorized denominations. Bearer Securities
        are transferable upon delivery.

                  Registered Securities may, at the option of the holder
        thereof, be exchanged at the Corporate Trust Office of the
        Fiscal Agent in New York City, or subject to applicable laws and
        regulations, the offices of the paying agencies in London and,
        if the Securities are listed on the Luxembourg Stock Exchange
        and so long as listed thereon, Luxembourg or as designated by
        the Company for such purposes pursuant to Section 12(g), for an
        equal aggregate principal amount of Registered Securities of
        different denominations.  Registered Securities shall not be
        exchangeable for Bearer Securities.  Whenever any Registered
        Securities are so surrendered for exchange, the Company shall
        execute, and the Fiscal Agent shall authenticate and deliver,
        the Registered Securities which the holder making the exchange
        is entitled to receive, having endorsed thereon a Guarantee duly
        executed by the Guarantor.

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                  (d)  Each certificate evidencing Restricted Securities
        shall bear a legend in substantially the following form:

             THIS SECURITY (OR ITS PREDECESSOR) HAS NOT BEEN REGISTERED
             UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED
             (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS AND
             NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION
             HEREIN MAY BE OFFERED, SOLD OR OTHERWISE TRANSFERRED WITHIN
             THE "UNITED STATES" OR TO "U.S. PERSONS" (AS DEFINED IN
             REGULATION S UNDER THE SECURITIES ACT) EXCEPT PURSUANT TO AN
             EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE
             REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.  ANY OFFER,
             SALE OR OTHER DISPOSITION IS SUBJECT TO THE RIGHT OF THE
             ISSUER OF THIS SECURITY AND THE FISCAL AGENT FOR SUCH ISSUER
             TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL,
             CERTIFICATIONS OR OTHER INFORMATION ACCEPTABLE TO THEM IN
             FORM AND SUBSTANCE.

                  (e)  The restrictions imposed by Section 3(b) upon the
        transferability of any particular Restricted Security shall
        cease and terminate when such Restricted Security has been
        transferred pursuant to Rule 144 under the Securities Act (or
        any successor provision thereto), unless the holder is an
        affiliate of the Company within the meaning of said Rule 144 (or
        such successor provision).  Any Restricted Security as to which
        such restrictions on transfer shall have expired in accordance
        with their terms or shall have terminated may, upon surrender of
        such Restricted Security for exchange to the Fiscal Agent in
        accordance with the provisions of this Section 3(e) accompanied,
        by an opinion of counsel reasonably acceptable to the Company,
        addressed to the Company and the Fiscal Agent and in form and
        scope satisfactory to the Company, to the effect that the
        transfer of such Restricted Security has been made in compliance
        with Rule 144 (or such successor provision), be exchanged for a
        new Registered Security, of like tenor and aggregate principal
        amount, which shall not bear the restrictive legend required by
        Section 3(d) hereof.

                  (f)  All Securities issued upon any registration of
        transfer or exchange of Securities shall be the valid obligations
        of the Company, and the Guarantees endorsed thereon shall be the
        valid obligations of the Guarantor, evidencing the same
        obligations, and entitled to the same benefits under this
        Agreement, as the Securities surrendered upon such registration
        of transfer or exchange.

                  (g)  Every Registered Security presented for
        registration of transfer or surrendered for exchange shall be
        duly endorsed, or be accompanied by a written instrument of
        transfer in form satisfactory to the Company, the Fiscal Agent
        and the Transfer Agent to which such Security is presented or
        surrendered and the Security Registrar, duly executed by the
        holder thereof or his attorney duly authorized in writing.  All
        such instruments shall comply with the applicable provisions of

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        this Section 3. The registration of the transfer of a Registered
        Security by the Security Registrar shall be deemed to be the
        written acknowledgment of such transfer on behalf of the Company.

                  (h)  No service charge shall be made for any
        registration of transfer or exchange (other than the cost of
        delivery), but the Company or the Transfer Agent may require
        payment of a sum sufficient to cover any tax or other
        governmental charge that may be imposed in connection with any
        registration of transfer or exchange of Securities, other than
        exchanges pursuant to Section 4 hereof or not involving any
        registration of transfer.

                  (i)  Neither the Company nor the Fiscal Agent nor any
        of the offices or agencies designated for the purposes specified
        in Section 12(f) nor any Transfer Agent shall be required (i) to
        exchange any Bearer Security (or portion thereof) for a
        Registered Security if the Company shall determine and inform
        the Fiscal Agent in writing that, as a result thereof, the
        Company would incur adverse consequences under the United States
        Federal income tax laws at the time of such exchange, or (ii) in
        the event of a redemption in part, (A) to register the transfer
        of Registered Securities or to exchange any Bearer Securities
        for Registered Securities for a period of 15 days immediately
        preceding the date notice is given pursuant to Section 3(e) of
        the Registered Securities and the Bearer Securities identifying
        the serial numbers of any Securities to be redeemed, or (B) to
        register the transfer of or exchange of any Registered Security
        so selected for redemption in whole or in part, except portions
        not being redeemed of Securities being redeemed in part, or (C)
        to exchange any Bearer Security called for redemption; provided,
        however, that a Bearer Security called for redemption may be
        exchanged, on the terms and conditions set forth above, for a
        Registered Security that is simultaneously surrendered, with
        written instruction for payment on the date fixed for redemption.

             4.   Closing Date; Exchange of Regulation S Global Security.

                  (a)  At any time and from time to time after the
        execution and delivery of this Agreement, the Company may
        deliver Securities executed by the Company in accordance with
        this Agreement bearing the Guarantees of the Guarantor endorsed
        thereon to the Fiscal Agent for authentication together with an
        officer's certificate of the Company directing such
        authentication, and the Fiscal Agent shall thereupon authenticate
        and make such Securities available for delivery upon and in
        accordance with the written order of the Company. No Security
        shall be valid or enforceable for any purpose unless and until
        the certificate of authentication thereon shall have been
        manually signed by a duly authorized signatory of the Fiscal
        Agent and such duly executed certificate of authentication on any
        Security shall be conclusive evidence that the Security has been
        duly authenticated and delivered hereunder.  The Regulation S
        Global Security will be issued upon payment to the Company or its

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        order in United States dollars in same-day funds by check or wire
        transfer to a United States dollar account designated by the
        Company, at 4:00 p.m., London time, on March 14, 1996, or at such
        other time on the same or such other date, not later than 5:00
        p.m., London time, on the fourth Business Day (as such term is
        defined in Section 5(h) hereof) in London thereafter, as the
        Managers and the Company may agree (the "Closing Date").  Such
        payment will be made (1) upon authorization from the Managers and
        (2) against delivery of the Regulation S Global Security for the
        Securities to The Chase Manhattan Bank, N.A., London office, as
        depositary (the "Common Depositary") for Morgan Guaranty Trust
        Company of New York, Brussels office, as operator of the
        Euroclear System (the "Euroclear Operator"), and Cedel Bank
        societe anonyme ("Cedel"). The Regulation S Global Security shall
        be held on deposit with the Common Depositary for the accounts of
        the Euroclear Operator and Cedel, for credit to the Managers'
        respective Securities Clearance Accounts (or to such other
        accounts as the Lead Manager may have specified) with the
        Euroclear Operator or Cedel.

                  (b)  On or before the Exchange Date, the Company will
        execute and deliver to the Fiscal Agent, at its office in London,
        definitive Registered Regulation S Securities and Bearer
        Securities bearing the Guarantees of the Guarantor endorsed
        thereon in the aggregate principal amount outstanding in the
        Regulation S Global Security and in such proportion of Registered
        Regulation S Securities to Bearer Securities as the Fiscal Agent
        may specify.  "Exchange Date" means the date following the
        expiration of the 40-day period commencing on the Closing Date.
        On or after the Exchange Date, the Regulation S Global Security
        may be surrendered to the Fiscal Agent to be exchanged, as a
        whole or in part, for definitive Bearer Securities without
        charge, and the Fiscal Agent shall authenticate and deliver, in
        exchange for such Regulation S Global Security or the portions
        thereof to be exchanged, an equal aggregate principal amount of
        definitive Bearer Securities, but only upon presentation to the
        Fiscal Agent at its office in London of a certificate of the
        Euroclear Operator or Cedel with respect to the Regulation S
        Global Security or portions thereof being exchanged,
        substantially in the form of Exhibit C hereto, to the effect that
        it has received a certificate or certificates in substantially
        the form set forth in Exhibit D hereto dated no earlier than 15
        days prior to the Exchange Date and signed by the person
        appearing in its records as the owner of the Regulation S Global
        Security or portions thereof being exchanged. Similarly, on or
        after the Exchange Date, portions of the Regulation S Global
        Security may be exchanged for an equal aggregate principal amount
        of definitive Registered Regulation S Securities upon
        presentation to the Fiscal Agent of a certificate substantially
        in the form of Exhibit F hereto, to the effect that it has
        received a certificate or certificates in substantially the form
        set forth in Exhibit E hereto dated no earlier than 15 days prior
        to the Exchange Date and signed by the person appearing in its


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        records as the owner of the Regulation S Global Security or
        portions thereof being exchanged.

                  (c)  The definitive Securities shall be printed,
        lithographed or engraved or produced by any combination of these
        methods or may be produced in any other manner permitted by the
        rules of any securities exchange on which the Securities may be
        listed, all as determined by the officers executing such
        Securities, as evidenced by such execution.

                  (d)  Only Bearer Securities may be issued upon receipt
        by the Euroclear Operator or Cedel of a certificate or
        certificates in the form of Exhibit D hereto.  Bearer Securities
        will be delivered only outside the United States, its territories
        or its possessions.  Only Registered Securities may be issued
        upon receipt by the Euroclear Operator or Cedel of a certificate
        or certificates in the form of Exhibit E hereto.

                  (e)  The delivery to the Fiscal Agent by the Euroclear
        Operator or Cedel of any certificate referred to above may be
        relied upon by the Company and the Fiscal Agent as conclusive
        evidence that a corresponding certificate or certificates has or
        have been delivered to the Euroclear Operator or Cedel pursuant
        to the terms of this Agreement.  The Fiscal Agent shall receive
        such certificate on behalf of the Company and shall promptly
        deliver the original certificate to the Company, retaining a copy
        of such certificate for its records.

                  (f)  Upon any such exchange of a portion of the
        Regulation S Global Security for a definitive Bearer Security or
        Securities or a definitive Registered Regulation S Security or
        Securities, the Regulation S Global Security shall be endorsed by
        the Fiscal Agent to reflect the reduction of its principal amount
        by an amount equal to the aggregate principal amount of such
        definitive Security or Securities.  Until so exchanged in full,
        the Regulation S Global Security shall in all respects be
        entitled to the same benefits under this Agreement as definitive
        Securities authenticated and delivered hereunder.

             5.   Payment.

                  (a)  The Company will pay or cause to be paid to the
        Paying Agent the amounts, at the times and for the purposes, set
        forth herein and in the text of the Securities, and the Company
        hereby authorizes and directs the Paying Agent to make payment of
        the principal and Additional Amounts (as defined in Section 2 of
        the Registered Securities and the Bearer Securities), if any, on
        the Securities from such payments.


                  (b)  At least 15 days prior to the date on which any
        payment of Additional Amounts shall be required to be made
        pursuant to Section 2 of the Registered Securities and the Bearer
        Securities, the Company will furnish the Paying Agent, each

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        other paying agency of the Company and the Fiscal Agent with a
        certificate of one of its duly authorized officers instructing
        the Paying Agent and each other paying agency of the Company as
        to the amounts required (i) to be deducted or withheld for or on
        account of any taxes described in Section 2 of the Registered
        Securities and the Bearer Securities from a payment to be made
        on that date and (ii) to be paid to each holder of Securities as
        Additional Amounts pursuant to that Section.  If the foregoing
        amounts are not uniform for all holders, then the Company's
        certificate shall specify by country of residence or other
        factor the amounts required to be deducted or withheld and to be
        paid as Additional Amounts for each holder or class of holders
        of the Securities.  In the absence of its receipt of any such 
        certificate from the Company, the Paying Agent may make payment
        without deduction or withholding.  The Company and the Guarantor
        hereby agree to indemnify the Paying Agent, each other paying
        agency of the Company and the Fiscal Agent for, and to hold them
        harmless against, any loss, liability or expense reasonably
        incurred without gross negligence or bad faith on their part,
        arising out of or in connection with actions taken or omitted by
        any of them in reliance on any certificate furnished pursuant to
        this Section.

                  (c)  In order to provide for the payment of the
        principal of the Securities as the same shall become due and
        payable, the Company shall pay to the Paying Agent at its office
        in London, in such coin or currency of the United States of
        America as at the time of payment is legal tender for the payment
        of public and private debts therein, and in same day funds, the
        following amounts (and the Company shall give notice to the
        Fiscal Agent at least one full Business Day prior to the date
        payment is due to the Paying Agent as to the means of such
        payment), to be held and applied by the Paying Agent as
        hereinafter set forth:

                       (i)  If the Company shall elect, or shall be
             required, to redeem the Securities in accordance with
             Section 6 hereof, the Company will pay to the Paying Agent
             on the Business Day immediately prior to the date fixed for
             redemption thereof in same day funds an amount sufficient
             (with any amount then held by the Paying Agent and available
             for the purpose) to pay the redemption price of the
             Securities called for redemption on the redemption date or
             entitled to be redeemed, together with Additional Amounts,
             if any, thereon and the Paying Agent shall apply such amount
             to the payment of the redemption price and Additional
             Amounts, if any, thereon in accordance with the terms of the
             Securities.

                       (ii) On the Business Day immediately prior to the
             maturity date of the Securities, the Company shall pay to
             the Paying Agent in same day funds an amount which, together
             with any amounts then held by the Paying Agent, and
             available for payment thereof, shall be equal to the entire

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             amount of principal (and Additional Amounts, if any) to be
             due on such maturity date on all the Securities then
             outstanding, and the Paying Agent shall apply such amount to
             each payment of the principal of (Additional Amounts, if
             any, on) the Securities in accordance with the terms of the
             Securities.

                  (d)  Notwithstanding anything in this Section to the
        contrary, if any payment of principal (or Additional Amounts, if
        any) is due on a day that is not a Business Day, payment shall be
        made on the next succeeding Business Day, with the same effect as
        if made on the day such payment was due.  A "Business Day" is
        defined, with respect to any act to be performed pursuant hereto
        or to the Securities, as any day which is not a Saturday, Sunday
        or a day on which banking institutions in the place where such
        act is to occur are authorized or obligated by applicable law,
        regulation or executive order to close.

             6.   Redemption.

                  (a)  If, under the circumstances described in Section 3
        of the Registered Securities and Bearer Securities, the Company
        shall elect or be required to redeem outstanding Securities, the
        following provisions shall be applicable:

                  (i)  The Company shall, at least 35 days in the case of
             a redemption in whole or 75 days in the case of a redemption
             in part (or such shorter period as shall be reasonably
             acceptable to the Fiscal Agent) before the date designated
             for such redemption, give written notice to the Agents of
             its election to redeem the Securities on the redemption date
             specified in such notice and state in such notice that the
             conditions precedent to such redemption have occurred and
             describe them, and in case of redemptions pursuant to
             Section 3(b) of the Registered Securities and the Bearer
             Securities, shall provide to the Fiscal Agent an opinion of
             counsel satisfactory to the Fiscal Agent stating that the
             legal conditions precedent to the right of the Company to
             effect such redemption have occurred, and shall request the
             Fiscal Agent to arrange for publication and mailing of the
             notice specified in clause (a) (ii) below.

                  (ii) In case the Company shall give notice to the
             Agents of its election to redeem the Securities, the Fiscal
             Agent shall cause to be published on behalf of and at the
             expense of the Company a notice of redemption in accordance
             with the provisions of Section 3 of the Registered
             Securities and Bearer Securities and shall mail by
             first-class mail a copy of the notice to each holder of a
             Registered Security at the address of such holder as it
             shall appear in the Security Register.  The Fiscal Agent
             shall send a copy of such notice of redemption to the
             Company, the Guarantor, the Paying Agent (if different from


                                       11PAGE
<PAGE>
             the Fiscal Agent) and each other paying agency of the
             Company.

                  (iii)   Such notice shall be published on behalf and at
             the expense of the Company in an Authorized Newspaper (as
             defined in Section 19 hereof) on a Business Day in New York
             City and in London and, if the Securities are listed on the
             Luxembourg Stock Exchange and so long as listed thereon, in
             an Authorized Newspaper in Luxembourg, or, if publication in
             either London or Luxembourg is not practical, in an
             Authorized Newspaper in any country in Western Europe, as
             set forth in Section 19 of this Agreement and Section 3 of
             the Registered Securities and Bearer Securities.  In the
             case of a redemption in whole, notice will be given once not
             more than 60 nor less than 30 days prior to the date fixed
             for redemption.  In the case of partial redemption, notice
             will be given twice, the first such notice to be given not
             more than 75 nor less than 60 days prior to the date fixed
             for redemption and the second such notice to be given not
             more than 60 and not less than 30 days prior to the date
             fixed for redemption.  The Fiscal Agent shall notify the
             Company promptly of the portions of outstanding Securities
             to be called for redemption as determined pursuant to
             Section 3(a) of the Registered Securities and Bearer
             Securities.

                  (b)  Under the circumstances described in Section 3(d)
        of the Registered Securities and Bearer Securities concerning the
        redemption of outstanding Securities at the option of the
        holders thereof, the following provisions shall be applicable:

                       (i)  The Company shall give notice to the Fiscal
             Agent of the occurrence of a Redemption Event (as defined in
             Section 3(d) of the Registered Securities and Bearer
             Securities) immediately upon the occurrence of such
             Redemption Event.  Such notice shall state:

                            (A)  The nature of the Redemption Event;

                            (B)  The Holder Redemption Date (as defined
                  in Section 3(d) of the Registered Securities and Bearer
                  Securities) in respect of such Redemption Event; and

                            (C)  The redemption price as set forth in
                  Section 3(d) of the Registered Securities and Bearer
                  Securities.



                       (ii) The Fiscal Agent shall cause to be published
             on behalf of the Company a notice of entitlement to redeem
             in accordance with the provisions of Section 3 of the
             Registered Securities and Bearer Securities and shall mail
             by first-class mail a copy of such notice to each holder of

                                       12PAGE
<PAGE>
             a Registered Security at the address of such holder as it
             shall appear in the Security Register.  The Fiscal Agent
             shall send a copy of such notice of entitlement to redeem to
             the Company, the Guarantor, the Paying Agent (if different
             from the Fiscal Agent) and each other paying agency of the
             Company hereunder.  Such notice shall be published on behalf
             and at the expense of the Company in Authorized Newspapers
             on a Business Day in New York City and in London and, if the
             Securities are listed on the Luxembourg Stock Exchange and
             so long as listed thereon, in an Authorized Newspaper in
             Luxembourg, or, if either publication in London or
             Luxembourg is not practical, in an Authorized Newspaper in
             any country in Western Europe, as set forth in Section 19 of
             this Agreement. Notice shall be given not later than 10 days
             after the later of the Exchange Date or the date of the
             occurrence of a Redemption Event.

                       (iii)  Upon the deposit of any of the Registered
             Securities or Bearer Securities with the agency designated
             by the Company as the place for payment of the Registered
             Securities and Bearer Securities together with a duly signed
             and completed redemption notice in the form set forth on the
             reverse of the Bearer Securities and Registered Securities,
             all in accordance with the provisions of Section 3 of the
             Registered Securities and Bearer Securities, the holder of
             such Registered Security and Bearer Security shall be
             entitled to receive a non-transferable receipt evidencing
             such deposit.

                       (iv) The Fiscal Agent shall notify the Company on
             each Business Day in the five Business Days prior to the
             Holder Redemption Date for outstanding Securities to be
             redeemed under this Section 6(b) of the amount required to
             redeem such Securities.

             7.   Conversion of Securities.

                  (a)  Subject to and upon compliance with the provisions
        of this Section 7, at the option of the holder thereof, any
        outstanding Registered Security or Bearer Security or, in the
        case of any outstanding Registered Security or Bearer Security of
        a denomination other than $1,000, any portion of the principal
        amount thereof which is $1,000 or an integral multiple of
        $1,000, may be converted into shares of the Company's common
        stock, par value $.10 per share ("Common Stock"), issuable upon
        conversion of the Securities, at the principal amount thereof,
        or of such portion thereof, into fully paid and nonassessable
        shares of Common Stock ("Conversion Shares") as set forth in the
        Registered Securities and Bearer Securities.  Such Registered
        Securities or Bearer Securities may be converted on or after the
        date which is the later of: (i) the Exchange Date, and (ii) May
        30, 1996, and in any event prior to redemption or maturity.  The
        right to convert Securities called for redemption will terminate
        at the close of business on the fifteenth day next preceding the

                                       13PAGE
<PAGE>
        date fixed for redemption (or if such date is not a Business
        Day, then the next succeeding Business Day), and will be lost if
        not exercised prior to that time.  No payment or adjustment
        shall be made upon any conversion on account of any dividends on
        the Common Stock issued upon conversion. The price at which
        Conversion Shares shall be delivered upon conversion (herein
        called the "Conversion Price") shall be initially U.S. $20.34
        per share of Common Stock.  The Conversion Price shall be
        adjusted in certain instances as provided in paragraphs (c)(i),
        (ii), (iii), (iv), (vi) and (vii) of Section 4 of the Registered
        Securities and Bearer Securities.

                  (b)  In order to exercise the conversion privilege, the
        holder of any Security to be converted shall surrender such
        Security, or, if less than the entire principal amount of a
        Registered Security or Bearer Security of a denomination other
        than $1,000 is to be converted, the portion thereof to be
        converted, at the office of the Conversion Agent or any office or
        agency of the Company maintained for that purpose pursuant to
        Section 12(f) hereof, accompanied by a duly signed and completed
        Conversion Notice, in substantially the form set forth in the
        Registered Securities and Bearer Securities, to the Company, at
        such office or agency that the holder elects to convert such
        Security (or specified portion thereof).

                  (c)  Securities shall be deemed to have been converted
        immediately prior to the close of business on the day of
        surrender of such Securities for conversion in accordance with
        the foregoing provisions, and at such time the rights of the
        holders of such Securities as holders shall cease, and the
        person or persons entitled to receive the Common Stock issuable
        upon conversion shall be treated for all purposes as the record
        holder or holders of such Common Stock at such time.  As
        promptly as practicable on or after the conversion date, the
        Company shall cause to be issued or delivered at such office or
        agency a certificate or certificates for the number of full
        shares of Common Stock issuable or deliverable upon conversion,
        together with payment, in lieu of any fraction of a share, as
        provided below.  The Paying Agent shall, within five business
        days after the conversion date, make a payment for the
        Additional Amounts, if any, thereon.

                  (d)  In the case of any Registered Security or Bearer
        Security of a denomination other than $1,000 which is converted
        in part only, upon such conversion the Company shall execute and
        the Fiscal Agent shall authenticate and deliver to the holder
        thereof, at the expense of the Company, a new Security or
        Securities of any authorized kind or denomination as requested
        by such holder, in aggregate principal amount equal to the
        unconverted portion of the principal amount of such Security,
        having endorsed thereon a Guarantee duly executed by the
        Guarantor.

                                       14PAGE
<PAGE>
                  (e)  No fractional shares of Common Stock shall be
        issued or delivered upon conversion of Securities.  If more than
        one Security shall be surrendered for conversion at one time by
        the same holder, the number of full shares of Common Stock which
        shall be issuable or deliverable upon conversion thereof shall
        be computed on the basis of the aggregate principal amount of
        the Securities (or, in the case of Registered Securities or
        Bearer Securities of a denomination other than $1,000, specified
        portions thereof) so surrendered.  Instead of any fractional
        share of Common Stock which would otherwise be issuable or
        deliverable upon conversion of any Security or Securities (or,
        in the case of Registered Securities or Bearer Securities of a
        denomination other than $1,000, specified portions thereof), the
        Company shall pay a cash adjustment in respect of such fraction
        in an amount equal to the same fraction of the Closing Price (as
        defined in Section 4(c)(v) of the Registered Securities and
        Bearer Securities) for a share of Common Stock at the close of
        business on the day preceding the day of conversion.

                  (f)  Whenever the Conversion Price is adjusted as
        provided in the Registered Securities and Bearer Securities:

                  (i)  the Company shall compute the adjusted Conversion
             Price in accordance with the terms of the Registered
             Securities and Bearer Securities and shall prepare a
             certificate signed by the President, any Vice President or
             the Treasurer of the Company setting forth the adjusted
             Conversion Price and showing in reasonable detail the facts
             upon which such adjustment is based, and such certificate
             shall forthwith be filed with the Conversion Agent and at
             each office or agency maintained for the purpose of
             conversion of Securities pursuant to Section 12(f) hereof;
             and

                  (ii) a notice stating that the Conversion Price has
             been adjusted and setting forth the adjusted Conversion
             Price shall forthwith be prepared, and, as soon as
             practicable after it is prepared, the Company shall promptly
             cause a notice setting forth the adjusted Conversion Price
             to be given to the holders of the Securities.  Such notice
             shall be published on behalf and at the expense of the
             Company in Authorized Newspapers on a Business Day in New
             York City and in London and, if the Securities are listed on
             the Luxembourg Stock Exchange and so long as listed thereon,
             in an Authorized Newspaper in Luxembourg, or, if publication
             in either London or Luxembourg is not practical, in an
             Authorized Newspaper in any country in Western Europe, as
             set forth in Section 19 of this Agreement and Section 4 of
             the Registered Securities and Bearer Securities.

                  (g)  In case:

                  (i)  the Company shall declare a dividend (or any other
             distribution) on its Common Stock payable otherwise than in

                                       15PAGE
<PAGE>
             cash out of its retained earnings (excluding dividends
             payable in stock for which adjustment is made pursuant to
             the terms of the Registered Securities and Bearer
             Securities); or

                  (ii) the Company shall authorize the granting to the
             holders of its Common Stock of rights or warrants to
             subscribe for or purchase any shares of capital stock of any
             class or of any other rights; or

                  (iii)  of any reclassification of the Common Stock of
             the Company (other than a subdivision or combination of its
             outstanding shares of Common Stock), or of any consolidation
             with, or merger of the Company into, any other corporation,
             or of any merger of another corporation into the Company
             (other than a merger which does not result in any
             reclassification, conversion, exchange or cancellation of
             outstanding shares of Common Stock of the Company), or of
             any sale or transfer of all or substantially all of the
             assets of the Company (which shall not include the sale or
             transfer of any portion of the assets of the Company to any
             corporation which, immediately following such transfer is at
             least 51% owned by the Company, provided that such sale or
             transfer does not result in the reclassification,
             conversion, exchange or cancellation of outstanding shares
             of Common Stock of the Company); or

                  (iv) of the involuntary dissolution, liquidation or
             winding up of the Company; or

                  (v)  the Company proposes to take any other action
             which would require an adjustment of the Conversion Price
             pursuant to the Registered Securities and Bearer Securities;

             then the Company shall cause to be filed with the Conversion
             Agent and at each office or agency maintained for the
             purpose of conversion of Securities a notice setting forth
             the adjusted Conversion Price and shall cause notice to be
             given as provided in Section 19 except that notice need be
             given once at least 20 days (or 10 days in any case
             specified in clause (i) or (iii) above) prior to the
             applicable record date hereinafter specified, stating (x)
             the date on which a record is to be taken for the purpose of
             such dividend, distribution, rights or warrants or, if a
             record is not to be taken, the date as of which the holders
             of Common Stock of record to be entitled to such dividend,
             distribution, rights or warrants is to be determined, or (y)
             the date on which a reclassification, consolidation, merger,
             sale, transfer, dissolution, liquidation or winding up is
             expected to become effective, and the date as of which it is
             expected that holders of Common Stock of record shall be
             entitled to exchange their shares of Common Stock for
             the securities, cash or other property deliverable upon such
             reclassification, consolidation, merger, sale, transfer,

                                       16PAGE
<PAGE>
             dissolution, liquidation or winding up. The failure to give
             notice required by this Section or any defect therein shall
             not affect the legality or validity of any dividend,
             distribution, rights, warrants, reclassification,
             consolidation, merger, sale, transfer, dissolution,
             liquidation or winding up, or the vote on any such action.

                  (h)  The Company shall, at all times, have reserved and
        available, free from preemptive rights, out of its authorized
        but unissued shares of Common Stock, for the purpose of
        effecting the conversion of Securities, the full number of
        Conversion Shares then issuable upon the conversion of all
        Securities (based on the aggregate principal amount of
        Securities outstanding).

                  (i)  The Company shall in good faith use its best
        efforts, to (i) cause all registrations with, and to obtain any
        approvals by, any governmental authority under any Federal or
        State law of the United States that may be required in connection
        with the conversion of the Securities into Common Stock and the
        resale thereof and (ii) to list the shares of Common Stock
        required to be issued or delivered upon conversion of securities
        (or other securities issuable upon conversion of the Securities)
        prior to such issue or delivery on such national securities
        exchange or automated over-the-counter trading market where such
        Common Stock is listed or traded at the time of such delivery.

                  (j)  The Company covenants that all shares of Common
        Stock which may be issued or delivered upon conversion of
        Securities (or other securities issuable upon conversion of the
        Securities) will upon issuance be fully paid and nonassessable
        and, except as provided in Section 13 hereof, the Company will
        pay all stamp, excise or similar taxes or duties, liens and
        charges with respect to the issue thereof.

                  (k)  All converted Securities shall be held by the
        Company, and may, at any time, be delivered to the Fiscal Agent
        for cancellation, which shall hold or dispose of the same in
        accordance with its policy for disposal of canceled securities
        or as otherwise directed by the Company.  Converted Securities
        shall not be transferred.  The Conversion Agent shall give the
        Company prompt notice of all Securities which have been
        converted, and if the Fiscal Agent is not also the Conversion
        Agent, the Company will promptly give, or cause to be given,
        written notice to the Fiscal Agent of the serial numbers of all
        Securities which have been converted.



                  (l)  In case of any consolidation with, or merger of
        the Company into, any other corporation, or in case of any merger
        of another corporation into the Company (other than a merger
        which does not result in any reclassification, conversion,

                                       17PAGE
<PAGE>
        exchange or cancellation of outstanding shares of Common Stock of
        the Company), or in case of any sale or transfer of all or
        substantially all of the assets of the Company (which shall not
        include the sale or transfer of any portion of the assets of the
        Company to any corporation which, immediately following such
        transfer is at least 51% owned by the Company, provided that
        such sale or transfer does not result in the reclassification,
        conversion, exchange or cancellation of outstanding shares of
        Common Stock of the Company), the corporation formed by such
        consolidation or resulting from such merger, or which acquires
        such assets, as the case may be, shall execute and deliver to
        the Fiscal Agent an amendment to the Fiscal Agency Agreement
        providing that the holder of each Registered Security and Bearer
        Security shall have the right during the period such Security
        shall be convertible as specified in the Registered Securities
        and Bearer Securities to convert such Security only into the
        kind and amount of securities, cash and other property
        receivable upon such consolidation, merger, sale or transfer by
        a holder of the number of shares of Common Stock of the Company
        into which such Security might have been converted immediately
        prior to such consolidation, merger, sale or transfer, assuming,
        if such consolidation, merger, sale or transfer is prior to the
        period such Security shall be convertible as specified in the
        Registered Securities and Bearer Securities, that the Securities
        were convertible at such time at the initial Conversion Price as
        adjusted pursuant to the terms of the Registered Securities and
        Bearer Securities.  Such amendment shall provide for adjustments
        which, for events subsequent to the effective date of such
        amendment, shall be as nearly equivalent as may be practicable
        to the adjustments provided for in the Registered Securities and
        the Bearer Securities.  The above provisions of this Section
        shall similarly apply to successive consolidations, mergers,
        sales or transfers.

                  (m)  Subject to Section 11(j) hereof, neither the
        Fiscal Agent nor the Conversion Agent or conversion agency
        appointed by the Company shall at any time be under any duty or
        responsibility to any holder of Securities to determine whether
        any facts exist which may require any adjustment of the
        Conversion Price, or with respect to the nature or extent of any
        such adjustment when made, or with respect to the method
        employed, or herein or in the Registered Securities and Bearer
        Securities provided to be employed, in making the same.  Neither
        the Fiscal Agent nor the Conversion Agent or conversion agency
        appointed by the Company shall be accountable with respect to the
        validity or value (or the kind or amount) of any shares of Common
        Stock or of any securities or property which may at any time be
        issued or delivered upon the conversion of any Security; and
        neither the Fiscal Agent nor the Conversion Agent or conversion
        agency appointed by the Company makes any representation with
        respect thereto.  Neither the Fiscal Agent nor the Conversion
        Agent or conversion agency appointed by the Company shall be
        responsible for any acts or omissions of the Company including
        without limitation any failure of the Company to issue, transfer

                                       18PAGE
<PAGE>
        or deliver any certificates representing shares of Common Stock
        or other securities or property or to make any cash payment upon
        the delivery of any Security for the purpose of conversion or to
        comply with any of the covenants contained in this Section 7.

                  (n)  Any Common Stock issued upon conversion of a
        Restricted Security ("Restricted Common Stock") at any time prior
        to the date which is three years (or the then applicable holding
        period under Rule 144(k) under the Securities Act (or successor
        provision)) after the date of original issuance of such
        Restricted Security and the last date on which the Company or
        any affiliate of the Company was the owner thereof (or any
        predecessor), shall be subject to the restrictions on transfer
        set forth in Section 3 hereof to the same extent as such
        Restricted Securities which were so converted.  All shares of
        Restricted Common Stock shall bear the legend and transfer
        requirements set forth in Section 3(d) hereof, with such
        modifications thereto as the Company shall deem appropriate.

             8.   Surrendered Securities.

                  All Securities surrendered for payment, redemption,
        retirement, transfer or exchange and all Securities purchased by
        the Company or any subsidiary shall be delivered to the Fiscal
        Agent.  In any such case the Fiscal Agent shall cancel all
        Securities not previously canceled and destroy all such
        Securities and coupons so delivered and shall furnish to the
        Company and the Guarantor a certificate with respect to such
        destruction.  Such certificate shall state, in the case of
        destruction of the Regulation S Global Security, that all
        certificates of the Euroclear Operator or Cedel as to beneficial
        ownership required by Section 4 hereof have been duly presented
        by the Euroclear Operator or Cedel.

             9.   Mutilated, Destroyed, Stolen or Lost Securities.

                  The Fiscal Agent is hereby authorized, in accordance
        with the provisions of the Securities and this Section, from time
        to time to authenticate and deliver Securities in exchange for or
        in lieu of Securities that become mutilated, destroyed, stolen or
        lost, upon receipt of indemnity and such other documents or
        proof as may be required in form and substance satisfactory to
        the Fiscal Agent, the Company and the Guarantor.  Every Security
        authenticated and delivered in exchange for or in lieu of any
        such Security shall have endorsed thereon a Guarantee and shall
        be considered obligations of the Company and the Guarantor .

             10.  Signatures.
                  (a) Securities shall be executed on behalf of the
        Company by its President, its Secretary, any Vice President or
        its Treasurer, any of whose signatures may be manual or in
        facsimile.  Any signature in facsimile may be imprinted or
        otherwise reproduced on the Securities.  The Company may adopt
        and use the signature or facsimile signature of any person who

                                       19PAGE
<PAGE>
        shall be a President, Secretary, Vice President or Treasurer at
        the time of the execution of the Securities, notwithstanding the
        fact that at the time the Securities shall be authenticated and
        delivered, or disposed of, such person shall have ceased to have
        held such office by virtue of which such person so executed such
        security.

                  (b) The Guarantees shall be executed on behalf of the
        Guarantor by its President, any Vice President, or its
        Treasurer, manually or in facsimile, and a facsimile of its
        corporate seal shall be impressed, imprinted or engraved thereon
        and shall be attested by its Secretary or one of its Assistant
        Secretaries, whose signature may be manual or in facsimile,
        prior to the authentication of the Securities on which they are
        endorsed.  Any signature in facsimile may be imprinted or
        otherwise reproduced on the Guarantees.  The Guarantor may adopt
        and use the signature or facsimile signature of any person who
        shall be any such officer of the Guarantor at the time of the
        execution of the Guarantee, notwithstanding the fact that at the
        time the Securities shall be authenticated and delivered, or
        disposed of, such person shall have ceased to be such officer of
        the Guarantor.

             11.  Agreements Concerning Agents.

                  Each of the Agents accepts its obligations herein and
        in the Securities, upon the terms and conditions hereof and
        thereof, including the following, to all of which the Company and
        the Guarantor agree and to all of which the rights hereunder of
        the holders from time to time of the Securities and coupons shall
        be subject:

                  (a)  Each of the Agents shall be entitled to reasonable
        compensation for all services rendered by such Agent, as
        separately agreed by the Company and the Agent, and the Company
        and the Guarantor agree promptly to pay such compensation and to
        reimburse each of the Agents for the reasonable out-of-pocket
        expenses (including, but not limited to, counsel fees) incurred
        by such Agent in connection with the services rendered by it
        hereunder.  The Company and the Guarantor also agree to
        indemnify each of the Agents and each other paying agency and
        conversion agency of the Company for, and to hold it harmless
        against, any loss, liability or expense (including the costs and
        expenses of defending against any claim of liability) incurred
        without negligence or bad faith on the part of such Agent or
        other paying agency and conversion agency of the Company
        hereunder.  The obligations of the Company and the Guarantor
        under this clause (a) shall survive payment of the Securities or
        the resignation or removal of any Agent or paying agency or
        conversion agency.

                  (b)  In acting under this Agreement and in connection
        with the Securities, each of the Agents and each other paying
        agency and conversion agency of the Company is acting solely as

                                       20PAGE
<PAGE>
        agent of the Company, and does not assume any obligation, or
        relationship of agency or trust, for or with any of the owners or
        holders of the Securities or coupons, except that all funds held
        by the Paying Agent or any other paying agency of the Company for
        payment of principal of (or Additional Amounts, if any, on) the
        Securities shall be held in trust but need not be segregated
        from other funds except as required by law and as set forth
        herein and in the Securities, and shall be applied as set forth
        herein and in the Securities; provided, however, that monies
        paid by the Company or the Guarantor to the Paying Agent or any
        other paying agency of the Company for the payment of principal
        of (or Additional Amounts, if any, on) Securities remaining
        unclaimed at the end of two years after such principal (or
        Additional Amounts, if any) shall have become due and payable
        shall be repaid to the Company or the Guarantor, as provided and
        in the manner set forth in the Securities, whereupon the
        aforesaid trust shall terminate and all liability of the Paying
        Agent or such other paying agency or the Company with respect
        thereto shall cease.

                  (c)  Each of the Agents and each other paying agency
        and conversion agency of the Company may consult with one or more
        counsel satisfactory to it (including counsel to the Company or
        the Guarantor), and the written opinion of such counsel shall be
        full and complete authorization and protection in respect of any
        action taken, omitted or suffered by it hereunder in good faith
        and in accordance with the opinion of such counsel.

                  (d)  Each of the Agents and each other paying agency
        and conversion agency of the Company shall be protected and shall
        incur no liability for or in respect of any action taken,
        omitted or suffered by it in reliance upon any Security,
        Guarantee, notice, direction, consent, certificate, affidavit,
        statement or other paper or document believed in good faith by
        such Agent or such other paying agency and conversion agency of
        the Company to be genuine and to have been signed by the
        property parties.

                  (e)  Each of the Agents and each other paying agency
        and conversion agency of the Company, its officers, directors and
        employees may become the owner of, or acquire any interest in,
        any Securities, with the same rights that it or they would have
        if it were not an Agent or such other paying agency of the
        Company hereunder, and may engage or be interested in any
        financial or other transaction with the Company, the Guarantor
        and their affiliates and may act on, or as depositary, trustee
        or agent for, any committee or body of holders of Securities or
        other obligations of the Company or the Guarantor, as freely as
        if it were not an Agent or a paying agency or conversion agency
        of the Company hereunder.

                  (f)  Neither the Paying Agent nor any other paying
        agency of the Company shall be under any liability for interest


                                       21PAGE
<PAGE>
        on any monies at any time received by it pursuant to any of the
        provisions of this Agreement or of the Securities.

                  (g)  The recitals contained herein and in the
        Securities (except in the Fiscal Agent's certificates of
        authentication), shall be taken as the statements of the Company
        or the Guarantor, as the case may be, and the Agents assume no
        responsibility for the correctness of the same.  None of the
        Agents makes any representation as to the validity or sufficiency
        of this Agreement or the Securities or the Guarantees, except for
        such Agent's due authorization to execute this Agreement.
        Neither the Agents nor any other paying agency or conversion
        agency of the Company shall be accountable for the use or
        application by the Company of the proceeds of any Securities
        authenticated and delivered by the Fiscal Agent in conformity
        with the provisions of this Agreement.

                  (h)  The Agents and each other paying agency and
        conversion agency of the Company shall be obligated to perform
        such duties and only such duties as are herein and in the
        Securities specifically set forth and no implied duties or
        obligations shall be read into this Agreement or the Securities
        against the Agents or any other paying agency of the Company.
        The Agents shall not be under any obligation to take any action
        hereunder which may tend to involve them in any expense or
        liability, the payment of which, within a reasonable time, is
        not, in their reasonable opinion, assured to them.

                  (i)  Unless herein or in the Securities otherwise
        specifically provided, any order, certificate, notice, request,
        direction, or other communication, from the Company or the
        Guarantor made by or given by it under any provision of this
        Agreement shall be sufficient if signed by the President, the
        Secretary, any Vice President or the Treasurer of the Company or
        the Guarantor, as the case may be.

                  (j)  Anything in this Agreement to the contrary
        notwithstanding, none of the Agents shall incur any liability
        hereunder, except as a result of negligence or bad faith
        attributable to it or its officers or employees, and shall incur
        no liability for the negligence or bad faith of its agents
        appointed by it with due care; provided that the Agent shall
        notify the Company and the Guarantor of the appointment of any
        such agents.

                  (k)  The Agents shall not be liable for any loss caused
        by events beyond the reasonable control of the Agents, including
        any malfunction, interruption of or error in the transmission of
        information caused by any machines or systems or interruption of
        communication facilities, abnormal operating conditions or acts
        of God.  The Agents shall have no liability whatsoever for any
        consequential, special, indirect or speculative losses or
        damages.

                                       22PAGE
<PAGE>
             12.  Offices, Resignation, Successors, Etc. of Agents,
        Paying, Conversion and Transfer Agencies.

                  (a)  The Company agrees that, until none of the
        Securities are outstanding or until monies for the payment of all
        principal of (and Additional Amounts, if any, on) all outstanding
        Securities shall have been made available at the office of the
        Paying Agent and shall have been returned to the Company as
        provided in the Securities, there shall at all times be a Fiscal
        Agent in the Borough of Manhattan, New York City, which shall be
        a bank or trust company organized and doing business under the
        laws of the United States of America or of any State of the
        United States of America, in good standing and authorized under
        such laws to exercise corporate trust powers, a Paying Agent, a
        Conversion Agent and a Transfer Agent having offices in one city
        in Western Europe and in New York City, which shall be a bank or
        trust company organized, in good standing and doing business
        under the laws of the United States of America or of any State of
        the United States of America, and a paying agency, a conversion
        agency and a transfer agency in at least one city in Western
        Europe, which shall be Luxembourg if the Securities are listed
        on the Luxembourg Stock Exchange and so long as listed thereon.

                  (b)  Each of the Agents may at any time resign as such
        Agent by giving written notice to the Company and to the
        Guarantor of such intention on its part, specifying the date on
        which its desired resignation shall become effective; provided,
        however, that such date shall not be less than 90 days after
        receipt of such notice by the Company and the Guarantor unless
        the Company and the Guarantor agree to accept less notice.  Each
        of the Agents hereunder may be removed at any time by the filing
        with it of any instrument in writing signed on behalf of the
        Company and the Guarantor and specifying such removal and the
        date when it is intended to become effective.  Such resignation
        or removal shall take effect upon the date of the appointment by
        the Company and the Guarantor, as hereinafter provided, of a
        successor Fiscal Agent, Conversion Agent or Paying Agent, as the
        case may be, and the acceptance of such appointment by such
        successor Agent.  Upon its resignation or removal, each of the
        Agents shall be entitled to the payment by the Company and the
        Guarantor of its compensation for the services rendered
        hereunder and to the reimbursement of all reasonable
        out-of-pocket expenses incurred in connection with the services
        rendered hereunder by such Agent.

                  (c)  In case at any time any of the Agents shall
        resign, or shall be removed, or shall be incapable of acting, or
        shall file a voluntary petition as a debtor under Chapter 7 or 11
        of Title 11 of the United States Code or have an order for relief
        entered against it as a debtor under Chapter 7 or 11 of Title 11
        of the United States Code or make an assignment for the benefit
        of its creditors or consent to the appointment of a receiver of
        all or any substantial part of its property, or shall admit in
        writing its inability to pay or meet its debts as they mature, or

                                       23PAGE
<PAGE>
        if an order of any court shall be entered approving any petition
        filed by or against the Fiscal Agent under any legislation
        similar to the provisions of Title 11 of the United States Code
        or against any of the Agents under the provisions of any
        legislation similar to the provisions of Title 11 of the United
        States Code, or if a receiver of it or of all or any substantial
        part of its property shall be appointed, or if any public officer
        shall take  charge or control of it or of its property or
        affairs, for the purpose of rehabilitation, conservation or
        liquidation, a successor Agent, qualified as aforesaid, shall be
        appointed by the Company and the Guarantor by an instrument in
        writing.  Upon the appointment as aforesaid of a successor Agent
        and acceptance by it of such appointment, the Agent so superseded
        shall cease to be such Agent hereunder.  If no successor Agent
        shall have been so appointed by the Company and the Guarantor and
        shall have accepted appointment as hereinafter provided, any
        holder of a Security, on behalf of itself and all others
        similarly situated, or any Agent may petition any court of
        competent jurisdiction for the appointment of a successor Agent
        and shall promptly notify the Company and the Guarantor of such
        action.

                  (d)  Any successor Fiscal Agent, Conversion Agent,
        Transfer Agent or Paying Agent appointed hereunder shall execute,
        acknowledge and deliver to its predecessor and to the Company
        and the Guarantor an instrument accepting such appointment
        hereunder, and thereupon such successor Agent, without any
        further act, deed or conveyance, shall become vested with all
        the authority, rights, powers, trusts, immunities, duties and
        obligations of such predecessor with like effect as if
        originally named as such Agent hereunder, and such predecessor,
        upon payment of its charges and disbursements then unpaid, shall
        thereupon become obligated to transfer, deliver and pay over,
        and such successor Agent shall be entitled to receive, all
        monies, securities or other property on deposit with or held by
        such predecessor, as such Agent hereunder.

                  (e)  Any corporation or bank into which any of the
        Agents hereunder may be merged or converted, or any corporation
        or bank with which such Agent may be consolidated, or any
        corporation or bank resulting from any merger, conversion or
        consolidation to which such Agent shall be a party, or any
        corporation or bank to which such Agent shall sell or otherwise
        transfer all or substantially all the assets and business of such
        Agent, or any corporation to which the Fiscal Agent shall sell or
        otherwise transfer all or substantially all of its corporate
        trust business, provided that it shall be qualified as aforesaid,
        shall be the successor to such Agent under this Agreement
        without the execution or filing of any document or any further
        act on the part of any of the parties hereto.

                  (f)  So long as there shall be a Fiscal Agent and
        Paying Agent hereunder, the Company shall maintain agencies (i)
        where Registered Securities (but not Bearer Securities or

                                       24PAGE
<PAGE>
        coupons) may be presented for surrender for payment (and for the
        payment of Additional Amounts on the Registered Securities, if
        any) and where Securities may be surrendered for conversion in
        the Borough of Manhattan, New York City, and (ii) where Bearer
        Securities may be surrendered for payment (and for the payment
        of Additional Amounts (pursuant to Section 2 of the Bearer
        Securities) on Bearer Securities, if any) and where Bearer
        Securities may be surrendered for conversion in at least one
        city in Western Europe, which shall be Luxembourg if the
        Securities are listed on the Luxembourg Stock Exchange and so
        long as listed thereon.  The Company now intends to maintain
        additional agencies (subject to applicable laws and regulations)
        where Bearer Securities may be surrendered for payment (and for
        the payment of Additional Amounts (pursuant to Section 2 of the
        Bearer Securities) on Bearer Securities, if any), where
        Registered Securities may be surrendered for payment and where
        Securities may be surrendered for conversion in London, England
        and, if the Securities are listed on the Luxembourg Stock
        Exchange and so long as listed thereon, Luxembourg, and during
        such period to keep the Agents advised of the names and
        locations of such agencies.  Unless the Company shall otherwise
        notify each of the Agents in writing, the sole such paying
        agencies and conversion agencies shall be the agencies specified
        in the Securities.  The Company authorizes the Paying Agent to
        pay to or to the order of the aforesaid agencies, upon demand by
        such agencies, funds for the payment of the principal of (and
        Additional Amounts pursuant to Section 2 of the Registered
        Securities and Bearer Securities, if any, on) the Securities. 
        Except as otherwise arranged by the Company, the Fiscal Agent
        shall arrange for the payment of the compensation of such paying
        agencies for their services as such, and the Company and the
        Guarantor shall pay to the Fiscal Agent from time to time
        sufficient funds to make such payments.

                  (g)  So long as there shall be a Fiscal Agent, Paying
        Agent and Conversion Agent hereunder, the Company shall maintain
        a Security Registrar and additional transfer agencies (the
        "Transfer Agents") (i) where Registered Securities may be
        surrendered for exchange for other Registered Securities in New
        York City and (ii) in at least one city in Western Europe, which
        shall be Luxembourg if the Securities are listed on the
        Luxembourg Stock Exchange and so long as listed thereon, where
        Bearer Securities may be delivered in exchange for Bearer
        Securities or for Registered Securities.  Consistent with
        applicable laws and regulations, including the provisions of the
        federal income tax laws of the United States, such agencies may
        be the same agencies as or different agencies from those
        maintained by the Company pursuant to Section 12(f).

                  The Company hereby appoints, subject to the listing of
        the Securities on the Luxembourg Stock Exchange, Banque
        Internationale a Luxembourg, 69, route d'Esch, L-1470 Luxembourg
        Ville, Luxembourg, as Transfer Agent for such exchanges.  The
        transfer, exchange and registration of transfer or exchange of

                                       25PAGE
<PAGE>
        Registered Securities shall be made by the Fiscal Agent in New
        York City.

             13.  Taxes.

                  The Company will pay all stamp taxes and other similar 
        duties, if any, that may be imposed by the United States of
        America or the United Kingdom, or any state or political
        subdivision thereof or taxing authority therein, with respect to
        the execution or delivery of this Agreement, or the issuance of
        the Regulation S Global Security or the Guarantees, or the
        exchange from time to time of the Regulation S Global Security
        for Registered Securities and Bearer Securities, or with respect
        to the issue or delivery of shares of Common Stock on conversion
        of Securities; provided, however, that the Company shall not be
        required to pay any tax or duty which may be payable in respect
        of any transfer involved in the issue or delivery of shares of
        Common Stock in a name other than that of the holder of the
        Security or Securities to be converted, and no such issue or
        delivery shall be made unless and until the person requesting
        such issue has paid to the Company the amount of any such tax or
        duty or has established to the satisfaction of the Company that
        such tax or duty has been paid.

             14.  Meetings and Votes of Holders.

                  (a)  A meeting of holders of Securities may be called
        at any time and from time to time pursuant to this Section for
        any of the following purposes: (i) to give any notice to the
        Company, to the Guarantor or to the Fiscal Agent, or to give any
        directions to the Fiscal Agent, or to consent to the waiving of
        any default hereunder or under the Registered Securities and
        Bearer Securities and its consequences, or to take any other
        action authorized to be taken by holders of Securities pursuant
        to Section 9 of the Registered Securities and Bearer Securities;
        or (ii) to take any other action authorized to be taken by or on
        behalf of the holders of any specified aggregate principal
        amount of the Securities under any other provision of this
        Agreement, the Registered Securities and Bearer Securities or
        under applicable law.

                  (b)  Meetings of holders of Securities may be held at
        such place or places in New York City or London as the Fiscal
        Agent or, in case of its failure to act, the Company, the
        Guarantor or the holders calling the meeting shall from time to
        time determine.

                  (c)  The Fiscal Agent may at any time call a meeting of
        holders of Securities to be held at such time and at such place
        in any of the locations designated in Section 14(b) hereof as the
        Fiscal Agent shall determine.  Notice of every meeting of
        holders shall be made as specified in Section 19 hereof, except
        that such notice shall set forth the time and the place of such
        meeting, in general terms the action proposed to be taken at

                                       26PAGE
<PAGE>
        such meeting and a general description of regulations applicable
        to such meeting, and shall be published at least three times in
        the publications specified in such Section 19, the first
        publication to be not less than 21 nor more than 180 days prior
        to the date fixed for the meeting.

                  (d)  In case at any time the Company, the Guarantor or
        the holders of at least 25% in aggregate principal amount of the
        Securities shall have requested the Fiscal Agent to call a
        meeting of the holders, by written request setting forth in
        reasonable detail the action proposed to be taken at the
        meeting, and the Fiscal Agent shall not have given the first
        notice of such meeting within 21 days after receipt of such
        request or shall not thereafter proceed to cause the meeting to
        be held as provided herein, then the Company, the Guarantor or
        the holders of Securities in the amount above specified may
        determine the time and the place in either of the locations
        designated in Section 14(b) hereof for such meeting and may call
        such meeting to take any action authorized in Section 14(a)
        hereof by giving notice thereof as provided in Section 14(c)
        hereof.

                  (e)  To be entitled to vote at any meeting of holders
        of Securities, a person shall be (i) a holder of one or more
        Securities, or (ii) a person appointed by an instrument in
        writing as proxy for a holder or holders of Securities by such
        holder or holders, which proxy need not be a holder of
        Securities.  The only persons who shall be entitled to be
        present or to speak at any meeting of holders shall be the
        persons entitled to vote at such meeting and their counsel and
        any representatives of the Fiscal Agent and its counsel and any
        representatives of the Company and its counsel and any
        representatives of the Guarantor and its counsel.

                  (f)  The persons entitled to vote a majority in
        principal amount of the outstanding Securities shall constitute a
        quorum for the transaction of all business specified in Section
        14(a) hereof. No business shall be transacted in the absence of a
        quorum unless a quorum is represented when the meeting is called
        to order.  In the absence of a quorum within 30 minutes of the
        time appointed for any such meeting, the meeting shall, if
        convened at the request of the holders of Securities (as
        provided in Section 14(d) hereof), be dissolved.  In any other
        case the meeting shall be adjourned for a period of not less
        than 10 days as determined by the chairman of the meeting prior
        to the adjournment of such adjourned meeting.  Notice of the
        reconvening of any adjourned meeting shall be given as provided
        in Section 14(c) hereof except that such notice need be
        published only once but must be given not less than five days
        prior to the date on which the meeting is scheduled to be
        reconvened.  Subject to the foregoing, at the reconvening of any
        meeting adjourned for a lack of a quorum the persons entitled to
        vote 25% in principal amount of the Securities outstanding shall
        constitute a quorum for the taking of any action set forth in

                                       27PAGE
<PAGE>
        the notice of the original meeting.  Notice of the reconvening
        of an adjourned meeting shall state expressly the percentage of
        the aggregate principal amount of the Securities that shall
        constitute a quorum.  At a meeting or an adjourned meeting duly
        reconvened and at which a quorum is present as aforesaid, any
        resolution and all matters (except as limited by Section 9 of
        the Registered Securities and Bearer Securities) shall be
        effectively passed and decided if passed or decided by the
        persons entitled to vote a majority in principal amount of the
        Securities represented and voting at such meeting, provided that
        such amount shall be not less than 25% in principal amount of
        the Securities outstanding.  Any holder of a Security who has
        executed an instrument in writing appointing a person as his
        proxy shall be deemed to be present for the purposes of
        determining a quorum and be deemed to have voted; provided,
        however, that such holder shall be considered as present or
        voting only with respect to the matters covered by such
        instrument in writing.  Any resolution passed or decision taken
        at any meeting of the holders of Securities duly held in
        accordance with this Section 14 shall be binding on all the
        holders of Securities whether or not present or represented at
        the meeting.

                  (g)  Notwithstanding any other provision of this
        Agreement, the Fiscal Agent may make such reasonable regulations
        as it may deem advisable for any meeting of holders of Securities
        in regard to proof of the holding of Securities and of the
        appointment of proxies and in regard to the appointment and
        duties of inspectors of votes, the submission and examination of
        proxies, certificates and other evidence of the right to vote,
        and such other matters concerning the conduct of the meeting as
        it shall deem appropriate.  Except as otherwise permitted or
        required by any such regulations, the holding of Bearer
        Securities shall be proved by the production of the Bearer
        Securities or by a certificate executed, as depositary, by, and
        the appointment of any proxy shall be proved by having the
        signature of the person executing the proxy witnessed or
        guaranteed by, in each case, any trust company, bank or banker
        satisfactory to the Fiscal Agent.  Such regulations may provide
        that written instruments appointing proxies, regular on their
        face, may be presumed valid and genuine without the proof
        specified herein or other proof.  The holding of Registered
        Securities shall be proved by the registry books maintained in
        accordance with Section 2(d) hereof or by a certificate or
        certificates of the Fiscal Agent in its capacity as Company's
        agent for the maintenance of such books.

                  (h)  The Fiscal Agent shall, by an instrument in
        writing, appoint a temporary chairperson and a temporary
        secretary of the meeting, unless the meeting shall have been
        called by the Company, the Guarantor or by the holders of
        Securities or the Fiscal Agent at the request of the Company, the
        Guarantor or the holders of Securities as provided in Section
        14(d) hereof and in the Securities, in which case the Company,

                                       28PAGE
<PAGE>
        the Guarantor or the holders calling the meeting, as the case may
        be, shall in like manner appoint a temporary chairperson and a
        temporary secretary.  A permanent chairperson and a permanent
        secretary of the meeting shall be elected by vote of the holders
        of a majority in principal amount of the Securities represented
        at the meeting and entitled to vote.

                  (i)  At any meeting each holder or proxy shall be
        entitled to one vote for each U.S. $1,000 principal amount of
        Securities held or represented by him; provided, however, that no
        vote shall be cast or counted at any meeting in respect of any
        Securities challenged as not outstanding and ruled by the
        chairperson of the meeting to be not outstanding.  The
        chairperson of the meeting shall have no right to vote, except
        as a holder or proxy.

                  (j)  Any meeting of holders of Securities duly called
        pursuant to Section 14(c) or 14(d) hereof at which a quorum is
        present may be adjourned from time to time by vote of the holders
        (or proxies for the holders) of a majority in principal amount of
        the Securities represented at the meeting and entitled to vote;
        and the meeting may be held as so adjourned without further
        notice.

                  (k)  The vote upon any resolution submitted to any
        meeting of holders of Securities shall be by written ballots on
        which shall be subscribed the signatures of the holders of
        Securities or of their representatives by proxy and the serial
        number or numbers of the Securities held or represented by them.
        The permanent chairperson of the meeting shall appoint two
        inspectors of votes who shall count all votes cast at the meeting
        for or against any resolution and who shall make and file with
        the secretary of the meeting their verified written reports in
        triplicate of all votes cast at the meeting.  A record, at least
        in triplicate, of the proceedings of each meeting of holders of
        Securities shall be prepared by the secretary of the meeting and
        there shall be attached to said record the original reports of
        the inspectors of votes on any vote by ballot taken thereat and
        affidavits by one or more persons having knowledge of the facts
        setting forth a copy of the notice of the meeting and showing
        that said notice was published as provided in Section 14(c) or
        14(d) hereof and, if applicable, Section 14(f) hereof.  Each copy
        shall be signed and verified by the affidavits of the permanent
        chairperson and secretary of the meeting, and one such copy shall
        be delivered to the Company, another to the Guarantor and another
        to the Fiscal Agent to be preserved by the Fiscal Agent, the copy
        delivered to the Fiscal Agent to have attached thereto the
        ballots voted at the meeting.  Any record so signed and verified
        shall be conclusive evidence of the matters therein stated.

             15.  Merger, Consolidation or Sale of Assets.

                  (a)  If at any time there shall be a merger,
        consolidation, sale or conveyance of assets or assumption of

                                       29PAGE
<PAGE>
        obligations to which any of the covenants contained in Section 6
        of the Registered Securities and Bearer Securities or Section 3
        of the Guarantees, is applicable, then in any such event the
        successor or assuming corporation referred to therein will
        promptly deliver to the Fiscal Agent:

                  (i)  a certificate signed by an executive officer of
             such successor or assuming corporation stating that as of
             the time immediately after the effective date of any such
             transaction, the covenants of the Company or the Guarantor,
             as the case may be, contained in the Registered Securities
             and Bearer Securities or the Guarantees, as applicable, have
             been complied with and the successor or assuming corporation
             is not in default under the provisions of this Agreement or
             the Securities or the Guarantees, as applicable; and

                  (ii) a written opinion of legal counsel (who may be an
             employee of or counsel to the successor or assuming
             corporation) stating that, in such counsel's opinion, such
             covenants have been complied with and that any instrument or
             instruments executed in the performance of such covenants
             comply with the requirements thereof.

                  In case of any such merger, consolidation, sale,
        conveyance or assumption, such successor or assuming corporation
        shall succeed to and be substituted for the Company or the
        Guarantor, as the case may be, with the same effect, subject to
        (in the case of a merger to which the Company is a party) Section
        6(b) of the Registered Securities and Bearer Securities, as if
        such successor or assuming corporation had been named herein and
        in the Registered Securities and Bearer Securities or the
        Guarantees, as applicable, as the Company or the Guarantor, as
        the case may be; the Company or the Guarantor, as the case may
        be, shall thereupon be relieved of any further obligation or
        liability hereunder or upon the Securities or the Guarantees, as
        applicable, provided that any successor or assuming corporation
        shall have the right to redeem the Securities, pursuant to
        Section 3(b) of the Registered Securities and Bearer Securities,
        only as a result of circumstances which occur subsequent to such
        merger, consolidation, sale, conveyance or assumption and as a
        result of which the Company would have had such right if the
        Company had remained the obligor on the Securities.  The Company
        or the Guarantor, as the case may be, as the predecessor
        corporation may thereupon or at any time thereafter be
        dissolved, wound up or liquidated.  If applicable, such
        successor or assuming corporation thereupon may cause to be
        signed, and may issue either in its own name or in the name of
        the Company any or all of the Securities issuable hereunder
        which theretofore shall not have been executed on behalf of the
        Company and delivered to the Fiscal Agent; and, upon the order
        of such successor or assuming corporation, instead of the
        Company, and subject to all the terms, conditions and
        limitations in this Agreement prescribed, the Fiscal Agent shall
        authenticate and shall deliver any Securities which previously

                                       30PAGE
<PAGE>
        shall have been signed and delivered by the officers of the
        Company to the Fiscal Agent for authentication, and any
        Securities which such successor or assuming corporation
        thereafter shall cause to be signed and delivered to the Fiscal
        Agent for that purpose.  If applicable, such successor or
        assuming corporation may cause to be endorsed either in its own
        name or in the name of the Guarantor, Guarantees on any or all
        of the Securities issuable hereunder which theretofore shall not
        have been so endorsed and delivered to the Fiscal Agent.  All
        the Securities so issued shall in all respects have the same
        legal rank and benefit under this Agreement as the Securities
        theretofore or thereafter issued in accordance with the terms of
        this Agreement as though all of such Securities had been issued
        at the date of the execution hereof.

                  In case of any merger, consolidation, sale, conveyance
        or assumption, such changes in phraseology and form (but not in
        substance) may be made in the Securities or the Guarantees
        thereafter to be issued as may be appropriate.

                  (b)  The Fiscal Agent may rely on the documents
        delivered pursuant to this Agreement by any successor or assuming
        corporation pursuant to this Section 15 as conclusive evidence
        that any such merger, consolidation, sale, conveyance or
        assumption complies with the provisions of this Section and the
        Securities.

             16.  Governing Law.

                  THIS AGREEMENT, THE SECURITIES AND THE GUARANTEES SHALL
        BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
        COMMONWEALTH OF MASSACHUSETTS, UNITED STATES OF AMERICA, WITHOUT
        GIVING EFFECT TO ITS CONFLICTS OF LAW RULES.

             17.  Amendments.

                  This Agreement may be amended by the parties hereto,
        and certain provisions hereof may be waived, in the manner
        provided in Section 9 of the Registered Securities and Bearer
        Securities.  This Agreement may also be amended by the parties
        hereto, without the consent of the holder of any Security, for
        the purposes set forth in Section 9 of the Registered Securities
        and Bearer Securities and for the purpose of curing any
        ambiguity, or of curing, correcting or supplementing any
        defective provision contained herein or in any manner that the
        parties may mutually deem necessary or desirable, and that shall
        not materially adversely affect the interests of the holders of
        the Securities.

             18.  Agent for Service of Process.

                  As long as any of the Securities remain outstanding,
        the Company and the Guarantor will at all times have an
        authorized agent in the City of New York, upon whom process may

                                       31PAGE
<PAGE>
        be served in any legal action or proceeding arising out of or
        relating to this Agreement or any Security or any Guarantee.
        Service of process upon such agent and written notice of such
        service mailed or delivered to the Company or the Guarantor, as
        the case may be, shall to the extent permitted by law be deemed
        in every respect effective service of process upon the Company or
        the Guarantor, as the case may be, in any such legal action or
        proceeding.  Each of the Company and the Guarantor hereby
        appoints the Fiscal Agent as its agent for such purpose, and
        covenants and agrees that service of process in any legal action
        or proceeding may be made upon it at the office of such agent
        located at 450 West 33rd Street, 15th Floor, New York, New York
        10001  (or such other address in the City of New York, as may be
        the principal corporate trust office of such agent), unless and
        until the Company or the Guarantor, as the case may be, shall
        designate another agent for such purpose by written notice to
        the Fiscal Agent.  If the Fiscal Agent receives any such service
        of process, it shall promptly notify the Company and the
        Guarantor of such service.

              19. Notices.

             All notices hereunder shall be deemed to have been given
        when deposited in the mail as first-class mail, registered or
        certified, return receipt requested, postage prepaid, addressed
        to any party hereto as follows:

                  The Company:        81 Wyman Street
                                      P.O. Box  9046
                                      Waltham, MA 02254-9046
                                      Attn:  President
                                      with a copy to the
                                      Guarantor and the
                                      General Counsel of
                                      the Guarantor



                  The Guarantor:      81 Wyman Street
                                      P.O. Box 9046
                                      Waltham, MA 02254-9046
                                      Attn: Secretary,
                                      with a copy to the General Counsel 


                  The Fiscal Agent:   450 West 33rd Street
                                      15th Floor
                                      New York, New York 10001
                                      Attn: Corporate Trust Department

                                      Chemical Bank House
                                      125 London Wall
                                      London EC2Y 5AJ
                                      England

                                       32PAGE
<PAGE>
                                      Attn:  Corporate Agency

                  The Paying Agent:   450 W. 33rd Street
                                      15th Floor
                                      New York, New York 10001
                                      Attn: Corporate Trust Department
                                      Chemical Bank House
                                      125 London Wall
                                      London EC2Y 5A4J
                                      England 
                                      Attn: Corporate Agency

                  The Transfer Agent: Banque Internationale a Luxembourg,
                                      S.A.
                                      69, Route d'Esch
                                      L-1470 Luxembourg Ville, Luxembourg

        or at any other address of which any of the foregoing shall have
        notified the others in writing.

                  Notices to holders of the Securities shall be given by
        publication on a Business Day in an Authorized Newspaper. For
        purposes of this Agreement, the term "Authorized Newspaper"
        means an English language newspaper, customarily published on
        each business day in morning editions, whether or not it shall
        be published in Saturday, Sunday or holiday editions, such as
        The Wall Street Journal (Eastern edition) in New York City, the
        Financial Times in London and the Luxemburger Wort in
        Luxembourg.  If by reason of the temporary or permanent
        suspension of publication of any newspaper or by reason of any
        other cause it shall be impossible to make publication of such
        notice in an Authorized Newspaper as herein provided, then such
        publication or other notice in lieu thereof as shall be made by
        the Fiscal Agent shall constitute sufficient publication of such
        notice, if such publication or other notice shall, so far as may
        be possible, approximate the terms and conditions of the
        publication in lieu of which it is given.  Notices will be
        mailed by the Fiscal Agent, on behalf of and at the expense of
        the Company, by first-class mail to registered holders of
        Registered Securities at their registered address as the same
        shall appear on the books of the Fiscal Agent on the day 15 days
        prior to such mailing.  The Fiscal Agent shall promptly furnish
        to the Company and to each other paying agency of the Company a
        copy of each notice so published or mailed.

             20.  Counterparts.

                  This Agreement may be executed in separate
        counterparts, and by each party separately in a separate
        counterpart, each such counterpart, when so executed and
        delivered, to be an original. Such counterparts shall together
        constitute but one and the same instrument.

                                       33PAGE
<PAGE>





                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]












































                                       34PAGE
<PAGE>
            IN WITNESS WHEREOF, the parties hereto have executed this
        Fiscal Agency Agreement as of the date first above written.



                                      THERMO ECOTEK CORPORATION



                                      By:  Jonathan W. Painter

                                      Name:     Jonathan W. Painter

                                      Title:    Treasurer



                                      THERMO ELECTRON CORPORATION



                                      By:  Jonathan W. Painter

                                      Name:     Jonathan W. Painter

                                      Title:    Treasurer



                                      CHEMICAL BANK,
                                           as Fiscal Agent



                                      By:  Trevor J. Hearn

                                      Name:     Trevor J. Hearn

                                      Title:    Attorney-in-Fact











                                       35PAGE
<PAGE>
                                                                EXHIBIT A

                      (FORM OF FACE OF REGISTERED SECURITY)



                  THIS SECURITY (OR ITS PREDECESSOR) HAS NOT BEEN
        REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS
        AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS AND
        NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN
        MAY BE OFFERED, SOLD OR OTHERWISE TRANSFERRED WITHIN THE "UNITED
        STATES" OR TO "U.S. PERSONS" (AS DEFINED IN REGULATION S UNDER
        THE SECURITIES ACT) EXCEPT PURSUANT TO AN EXEMPTION FROM, OR IN
        A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF
        THE SECURITIES ACT. ANY OFFER, SALE OR OTHER DISPOSITION IS
        SUBJECT TO THE RIGHT OF THE ISSUER OF THIS SECURITY AND THE
        FISCAL AGENT FOR SUCH ISSUER TO REQUIRE THE DELIVERY OF AN
        OPINION OF COUNSEL, CERTIFICATIONS OR OTHER INFORMATION
        ACCEPTABLE TO THEM IN FORM AND SUBSTANCE.



























                                       A-1PAGE
<PAGE>
                           THERMO ECOTEK CORPORATION
                     (Incorporated in the State of Delaware)



        NON-INTEREST BEARING CONVERTIBLE SUBORDINATED DEBENTURE DUE 2001
                      GUARANTEED ON A SUBORDINATED BASIS BY
                           THERMO ELECTRON CORPORATION
                     (Incorporated in the State of Delaware)



        No. R-________________                            U.S.$_______



                  Thermo Ecotek Corporation, a corporation duly
        incorporated and existing under the laws of the State of Delaware
        (the "Company"), for value received, hereby promises to pay to
        ________________, or registered assigns, the principal sum of
        __________________ United States Dollars on March 15, 2001 upon
        presentation and surrender hereof.  This Security shall not bear
        interest.

                  Reference is hereby made to the further provisions of
        this Security set forth under Terms and Conditions of the
        Securities on the reverse hereof, which further provisions shall
        for all purposes have the same effect as if set forth at this
        place.

                  This Security shall not become valid or enforceable for
        any purpose unless and until the certificate of authentication
        hereon shall have been manually signed by a duly authorized
        signatory of the Fiscal Agent.

                  IN WITNESS WHEREOF, the Company has caused this
        Security to be duly executed in its corporate name by the manual
        or facsimile signature of a duly authorized officer.

        Dated: __________

                                      THERMO ECOTEK CORPORATION

                                      By: ______________________

                                      Name: ____________________

                                      Title: ___________________

        Attest:

        _______________________________


                                       A-2PAGE
<PAGE>
                          CERTIFICATE OF AUTHENTICATION



             This is one of the Securities described in the within-
        mentioned Fiscal Agency Agreement.




                                           CHEMICAL BANK,
                                                as Fiscal Agent

                                           By: _______________________
                                               Authorized Signatory

         

        Dated: ______________





















                                       A-3PAGE
<PAGE>
                       (FORM OF FACE OF BEARER SECURITY)



        THIS SECURITY HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE
        UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
        ACT"), AND MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR
        TO U.S. PERSONS EXCEPT PURSUANT TO AN EXEMPTION FROM, OR IN A
        TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
        SECURITIES ACT.


        ANY UNITED STATES PERSON WHO HOLDS THIS OBLIGATION WILL BE
        SUBJECT TO LIMITATIONS UNDER THE UNITED STATES INCOME TAX LAWS,
        INCLUDING THE LIMITATIONS PROVIDED IN SECTIONS 165(j) AND 1287(a)
        OF THE UNITED STATES INTERNAL REVENUE CODE.



                            THERMO ECOTEK CORPORATION
                     (Incorporated in the State of Delaware)


        NON-INTEREST BEARING CONVERTIBLE SUBORDINATED DEBENTURE DUE 2001

                      GUARANTEED ON A SUBORDINATED BASIS BY

                           THERMO ELECTRON CORPORATION
                     (Incorporated in the State of Delaware)



        No. B-______________                              U.S.$ ______



                  Thermo Ecotek Corporation, a corporation duly
        incorporated and existing under the laws of the State of Delaware
        (the "Company"), for value received, hereby promises to pay to
        bearer upon presentation and surrender of this Security the
        principal sum of __________ United States Dollars on March 15,
        2001.  This Security shall not bear interest.  Such payment shall
        be made in such coin or currency of the United States of America
        as at the time of payment shall be legal tender for the payment
        of public and private debts, subject to any laws or regulations
        applicable thereto and to the right of the Company (limited as
        provided in the Fiscal Agency Agreement (as defined on the
        reverse hereof)) to terminate the appointment of any paying
        agency, at the London office of Chemical Bank located at Chemical
        Bank House, 125 London Wall, London EC2Y 5AJ, England, or, if the
        Securities are listed on the Luxembourg Stock Exchange and so
        long as listed thereon, Banque Internationale a Luxembourg S.A.,
        69, Route d'Esch, L-1470 Luxembourg or at such other offices or

                                       A-4PAGE
<PAGE>
        agencies outside the United States of America, its territories or
        its possessions as the Company may designate, by United States
        dollar check drawn on a bank in the City of New York, or (if
        arrangements satisfactory to the Company and the Fiscal Agent
        (as defined on the reverse hereof) are made) by wire transfer to
        a United States dollar account maintained by the holder at a
        bank outside the United States, its territories and its
        possessions. No payment on this Security will be made at the
        corporate trust office of the Fiscal Agent or any other paying
        agency maintained by the Company in the United States its
        territories and possessions, nor will any payment be made by
        transfer to an account in, or by mail to an address in, the
        United States, its territories or possessions, except as may be
        permitted by United States tax laws and regulations in effect at
        the time of such payment without detriment to the Company. 
        Notwithstanding the foregoing, payment of this Security may be
        made at the office of the Fiscal Agent in the City of New York
        if full payment at all paying agencies outside the United States
        is illegal or effectively precluded by exchange controls or
        other similar restrictions.

                  Reference is hereby made to the further provisions of
        this Security set forth under Terms and Conditions of the
        Securities on the reverse hereof, which further provisions shall
        for all purposes have the same effect as if set forth at this
        place.
         
                  This Security shall not become valid or enforceable for
        any purpose unless and until the certificate of authentication
        hereon shall have been manually signed by a duly authorized
        signatory of the Fiscal Agent.

                  IN WITNESS WHEREOF, the Company has caused this
        Security to be duly executed in its corporate name by the manual
        or facsimile signature of a duly authorized signatory.

        Dated: ______________

                                           THERMO ECOTEK CORPORATION

                                           By: _____________________

                                           Name: ___________________

                                           Title: __________________


        Attest:

        _______________________________

                                       A-5PAGE
<PAGE>
                          CERTIFICATE OF AUTHENTICATION



             This is one of the Securities described in the within-
        mentioned Fiscal Agency Agreement.


                                           CHEMICAL BANK,
                                                as Fiscal Agent

                                           By: ________________
                                               Authorized Signatory

        Dated: ____________




























                                       A-6PAGE
<PAGE>

              (FORM OF REVERSE OF REGISTERED AND BEARER SECURITIES)


                     Terms and Conditions of the Securities 

        1.   General.

                  (a)  This Security is one of a duly authorized issue of
        Securities of the Company designated as its Non-Interest Bearing
        Convertible Subordinated Debentures Due 2001 (herein called the
        "Securities").  The Company, for the benefit of the holders from
        time to time of the Securities, has entered into a Fiscal Agency
        Agreement dated as of March 14, 1996 (the "Fiscal Agency
        Agreement") among the Company, Thermo Electron Corporation, a
        corporation duly organized and existing under the laws of the
        State of Delaware, as Guarantor (the "Guarantor") and Chemical
        Bank, as Fiscal Agent, Paying Agent, Security Registrar and
        Conversion Agent (the "Fiscal Agent"), to which Fiscal Agency
        Agreement reference is hereby made for a statement of the
        respective rights, limitations of rights, duties and immunities
        thereunder of the Company, the Guarantor, the Fiscal Agent, and
        the holders of Securities and of the terms upon which the
        Securities are, and are to be, authenticated and delivered.  The
        holders of the Securities will be entitled to the benefits of,
        be bound by, and be deemed to have notice of, all of the
        provisions of the Fiscal Agency Agreement.  A copy of the Fiscal
        Agency Agreement is on file and may be inspected at the office
        of paying agencies appointed by the Company.

                  (b)  The Securities are issuable as bearer securities
        (the "Bearer Securities"), in the denominations of U.S. $1,000
        and U.S. $10,000, and as registered securities (the "Registered
        Securities"), in denominations of U.S. $1,000 and integral
        multiples thereof.  The Registered Securities, and transfers
        thereof, shall be registered as provided in Section 8 hereof and
        in the Fiscal Agency Agreement.  The holder of any Bearer
        Security and the registered holder of a Registered Security
        shall (to the fullest extent permitted by applicable law) be
        treated at all times, by all persons and for all purposes as the
        absolute owner of such Security regardless of any notice of
        ownership, theft or loss or of any writing thereon.

                  (c)  The Securities are direct and unsecured
        obligations of the Company, subordinated as set forth in Section
        7 hereof.  There are no restrictions herein on other indebtedness
        or securities which may be incurred or issued by the Company.

        2.   Additional Amounts.  The Company will pay to the holder of
        this Security who is a United States Alien (as defined below)
        such additional amounts ("Additional Amounts") as may be
        necessary in order that every net payment of the principal of
        this Security,  after withholding for or on account of any
        present or future tax, assessment or governmental charge imposed
        upon or as a result of such payment by the United States or any

                                       A-7PAGE
<PAGE>
        political subdivision or taxing authority thereof or therein,
        will not be less than the amount provided herein to be then due
        and payable; provided, however, that the foregoing obligation to
        pay Additional Amounts shall not apply to any one or more of the
        following:

                  (a)  any tax, assessment or other governmental charge
        which would not have been so imposed but for (i) the existence of
        any present or former connection between such holder (or between
        a fiduciary, settlor, beneficiary, member or stockholder of, or a
        person holding a power over, such holder, if such holder is an
        estate, trust, partnership or corporation) and the United
        States, including, without limitation, such holder (or such
        fiduciary, settlor, beneficiary, member, stockholder or person
        holding a power) being or having been a citizen or resident or
        treated as a resident thereof or being or having been engaged in
        a trade or business therein or being or having been present
        therein or having or having had a permanent establishment
        therein, or (ii) such holder's present or former status as a
        personal holding company, foreign personal holding company,
        passive foreign investment company, foreign private foundation
        or other foreign tax-exempt entity or controlled foreign
        corporation for United States tax purposes or a corporation
        which accumulates earnings to avoid United States Federal income
        tax, or (iii) such holder's status as a bank extending credit
        pursuant to a loan agreement entered into in the ordinary course
        of business;

                  (b)  any tax, assessment or other governmental charge
        which would not have been so imposed but for the presentation by
        the holder of this Security for payment on a date more than 10
        days after the date on which such payment became due and payable
        or on the date on which payment thereof is duly provided,
        whichever occurs later;

                  (c)  any estate, inheritance, gift, sales, transfer or
        personal property tax or any similar tax, assessment or other
        governmental charge;

                  (d)  any tax, assessment or other governmental charge
        which would not have been imposed but for the failure to comply
        with certification, information, documentation or other reporting
        requirements concerning the nationality, residence, identity or
        present or former connection with the United States of the
        holder or beneficial owner of such Security if such compliance
        is required by statute, regulation or ruling of the United
        States or any political subdivision or taxing authority thereof
        as a precondition to relief or exemption from such tax,
        assessment or other governmental charge;

                  (e)  any tax, assessment or other governmental charge
        which is payable otherwise than by deduction or withholding from
        payments of principal of this Security;

                                       A-8PAGE
<PAGE>
                  (f)  any tax, assessment or other governmental charge
        required to be withheld by any paying agent from any payment of
        principal of any Security if such payment can be made without
        such withholding by any other paying agent; nor will Additional
        Amounts be paid with respect to any payment of the principal of
        this Security (or cash in lieu of issuance of shares of Common
        Stock upon conversion) to a person other than the sole
        beneficial owner of such payment, or that is a partnership or
        fiduciary to the extent such beneficial owner, member of such
        partnership or beneficiary or settlor with respect to such
        fiduciary would not have been entitled to the payment of
        Additional Amounts had such beneficial owner, member,
        beneficiary or settlor been the holder of this Security or any
        coupon appertaining hereto.

                  The term "United States Alien" means any person who,
        for United States Federal income tax purposes, is a foreign
        corporation, a non-resident alien individual, a foreign
        partnership, or an estate or trust subject to United States
        Federal income tax on net income basis, and the term "United
        States" means the United States of America (including the
        several States and the District of Columbia), its territories,
        its possessions and other areas subject to its jurisdiction.

                  Except as specifically provided herein and in the
        Fiscal Agency Agreement, the Company shall not be required to
        make any payment with respect to any tax, assessment or other
        governmental charge imposed by any government or any political
        subdivision or taxing authority thereof or therein.

                  Whenever any Additional Amounts are to be paid on the
        Securities, the Company will give notice to the Guarantor, the
        Fiscal Agent, the Paying Agent and any paying agency of the
        Company, all as provided in the Fiscal Agency Agreement.

             3.   Redemption.

                  (a)  The Company, at its option, may redeem the
        Securities, in whole or in part, at any time on or after March
        15, 1999, upon notice as hereinafter prescribed, at a redemption
        price equal to 100% of the principal amount thereof.  In the
        event of a partial redemption, the Securities to be redeemed will
        be selected by the Fiscal Agent not more than 75 days before the
        date fixed for redemption by such method as the Fiscal Agent
        shall deem fair and appropriate. Provisions of this Security that
        apply to Securities called for redemption also apply to portions
        of Securities called for redemption.  The Fiscal Agent shall
        notify the Company promptly of the Securities or portions of
        Securities to be called for redemption.

                  (b)  If, at any time, the Company shall determine that
        as a result of any change in or amendment to the laws or any
        regulations or rulings of the United States or any political

                                       A-9PAGE
<PAGE>
        subdivision or taxing authority thereof or therein affecting
        taxation, or any amendment to, or change in, an official
        application or interpretation of such laws, regulations or
        rulings, which amendment or change is announced or becomes
        effective on or after March 7, 1996, the Company has or will
        become obligated to pay to the holder of any Security (other
        than the Restricted Securities) Additional Amounts and such
        obligation cannot be avoided by the Company taking reasonable
        measures available to it, then the Company may, at its election
        exercised at any time when such conditions continue to exist,
        redeem such Securities as a whole but not in part, upon notice
        as hereinafter prescribed, at a redemption price equal to 100%
        of the principal amount; provided that no such notice of
        redemption shall be given earlier than 90 days prior to the
        earliest date on which the Company would be obligated to pay
        such Additional Amounts were a payment in respect of such
        Securities then due; and provided  further that, at the time
        such notice is given, such obligations to pay such Additional
        Amounts remains in effect.

                  Prior to any redemption of the Securities pursuant to
        the preceding paragraph, the Company shall provide the Fiscal
        Agent with one or more certificates (signed by the President or
        any Vice President and the Treasurer or the Secretary) of the
        Company on which the Fiscal Agent may conclusively rely to the
        effect that the Company is entitled to redeem such Securities
        pursuant to such paragraph and that the conditions precedent to
        the right of the Company to redeem such Securities pursuant to
        such paragraph have occurred and a written opinion of counsel
        (who may be an employee of the Company or the Guarantor) stating
        that all legal conditions precedent to the right of the Company
        to redeem such Securities pursuant to such paragraph have
        occurred.

                  (c)  Except as set forth in the next succeeding
        paragraph, the Company shall redeem the Bearer Securities as a
        whole but not in part, upon notice as hereinafter prescribed, at
        100% of their principal amount, less applicable withholding
        taxes, if any, plus any applicable Additional Amounts payable, in
        the event that the Company determines that payment of principal
        of a Bearer Security made outside the United States by the
        Company or a paying agent, based on a written opinion of counsel,
        would under any present or future laws or regulations of the
        United States be subject to any certification, identification or
        information reporting requirement with regard to the
        nationality, residence or identity of a beneficial owner of a
        Bearer Security who is a United States Alien (other than a
        requirement (a) that would not be applicable to a payment made
        by the Company or any one of its paying agents (i) directly to
        the beneficial owner or (ii) to a custodian, nominee or other
        agent of the beneficial owner, or (b) that can be satisfied by
        the custodian, nominee or other agent certifying that the
        beneficial owner is a United States Alien, provided, however, in
        each case referred to in clauses (a)(ii) and (b), payment by

                                      A-10PAGE
<PAGE>
        such custodian, nominee or other agent of the beneficial owner
        is not otherwise subject to any such requirement).  The Company
        shall make such determination on the basis of a written opinion
        of counsel and will notify the Fiscal Agent thereof in writing
        as soon as practicable, stating in the notice the effective date
        of such certification, identification, or information reporting
        requirement and the dates within which the redemption shall
        occur, and the Fiscal Agent shall give prompt notice thereof to
        the holders of the Securities in accordance with the Fiscal
        Agency Agreement.  The Company shall determine the redemption
        date by notice to the Fiscal Agent at least 75 days before the
        redemption date, unless shorter notice is acceptable to the
        Fiscal Agent.  Such redemption of the Bearer Securities must
        take place on such date, not later than one year after the
        publication of the initial notice of the Company's determination
        of the existence of such certification, identification or
        information reporting requirement.  The Company shall not so
        redeem the Bearer Securities, however, if the Company, based on
        a written opinion of counsel, determines not less than 30 days
        prior to the date fixed for redemption, that no such payment
        would be subject to any requirement described above, in which
        case the Company shall notify the Fiscal Agent, which shall give
        prompt notice of that determination in accordance with the
        Fiscal Agency Agreement and any earlier redemption notice shall
        thereupon be revoked and of no further effect.

                  Notwithstanding the next preceding paragraph, if and so
        long as the certification, identification or information
        reporting requirement referred to in the next preceding paragraph
        would be fully satisfied by payment of United States withholding,
        backup withholding or similar taxes, the Company may elect, prior
        to publication of the notice of redemption and in lieu of
        redemption of the Bearer Securities, to have the provisions of
        this paragraph apply in lieu of the provisions of the next
        preceding paragraph.  In that event, the Company will pay such
        Additional Amounts (without regard to Section 2 hereof) as are
        necessary in order that, following the effective date of such
        requirements, every net payment made outside the United States
        by the Company or a paying agent of the principal of a Bearer
        Security to a holder who is a United States Alien (without
        regard to a certification, identification or information
        reporting requirement as to the nationality, residence or
        identity of such holder), after deduction for United States
        withholding, backup withholding or similar taxes (other than a
        tax (i) that would not be applicable in the circumstances
        referred to in the parenthetical clause of the first sentence of
        the next preceding paragraph or (ii) are imposed as a result of
        presentation of such Bearer Security for payment more than 10
        days after the date on which such payment becomes due and
        payable or on which payment thereof is duly provided for,
        whichever occurs later), will not be less than the amount
        provided in the Bearer Security to be then due and payable.  If
        the Company elects to pay such Additional Amounts and as long as
        it is obligated to pay such Additional Amounts, the Company may

                                      A-11PAGE
<PAGE>
        subsequently redeem the Bearer Securities, at any time, in whole
        but not in part, upon not more than 60 days nor less than 30
        days notice, given as hereinafter prescribed, at 100% of their
        principal amount, plus Additional Amounts, if any.

                  (d)  Each Security is subject to redemption in whole or
        in part (which shall be in a principal amount hereof which is
        U.S. $1,000 or an integral multiple thereof) at the option of the
        holder thereof on any Holder Redemption Date (as defined below)
        at a redemption price equal to 100% of the principal amount
        thereof, if a Redemption Event shall occur or have occurred. 
        For purposes hereof a "Redemption Event" shall have occurred if
        the Company's Common Stock (or other equity securities into
        which the Securities are then convertible) is neither listed for
        trading on a United States national securities exchange nor
        approved for trading on an established automated
        over-the-counter trading market in the United States.  The
        "Holder Redemption Date" with respect to any Redemption Event
        shall be the ninetieth day after the later of the Exchange Date
        or the date a Redemption Event has occurred.

                  Notwithstanding the fact that a Security or a portion
        thereof is called for redemption by the Company, each holder of a
        Security desiring to exercise the option for redemption set
        forth in this Section 3(d) shall, as a condition to such
        redemption, on or before the close of business on the fifth day
        prior to the Holder Redemption Date, surrender the Security to
        be redeemed in whole or in part together with the redemption
        notice hereon duly executed at the place or places specified in
        the notice required by Section 3(e) and otherwise comply with
        the provisions of Section 3(f).  A holder of a Security who has
        tendered a redemption notice (i) will be entitled to revoke its
        election by delivering a written notice of such revocation
        together with the holder's non-transferable receipt for such
        Security to the office or agency of the Company designated as
        the place for the payment of the Securities to be so redeemed on
        or before the Holder Redemption Date and (ii) will retain the
        right to convert its Securities into shares of Common Stock of
        the Company to the extent set forth in Section 4.

                  (e)  Notice of redemption will be given by publication
        in Authorized Newspapers (as defined in the Fiscal Agency
        Agreement) on a Business Day (as defined in the Fiscal Agency
        Agreement) in New York City and in London and, if the Securities
        are listed on the Luxembourg Stock Exchange and so long as
        listed thereon, in an Authorized Newspaper in Luxembourg, or, if
        either publication in London or Luxembourg is not practical, in
        an Authorized Newspaper in any country in Western Europe, and by
        mail to holders of Registered Securities, all as provided in the
        Fiscal Agency Agreement.  In the case of a redemption at the
        option of the Company, notice will be given once not more than
        60 nor less than 30 days prior to the date fixed for redemption.
        In the case of a partial redemption at the option of the
        Company, notice will be given twice, the first such notice to be

                                      A-12PAGE
<PAGE>
        given not more than 75 nor less than 60 days prior to the date
        fixed for redemption and the second such notice to be given not
        more than 60 nor less than 30 days prior to the date fixed for
        redemption.  In the case of a redemption by the Company at the
        option of a holder of a Security pursuant to Section 3(d)
        hereof, notice will be given by the Fiscal Agent setting forth
        the information described below not later than 10 days after the
        later of the Exchange Date or the occurrence of a Redemption
        Event. Neither the failure to give notice nor any defect in any
        notice given to any particular holder of a Security shall affect
        the sufficiency of any notice with respect to other Securities.

                  Notices relating to the redemption of Securities
        whether at the option of the Company or the holder hereof shall
        specify: the date fixed for redemption or the Holder Redemption
        Date, as the case may be; the redemption price; the date the
        conversion privilege expires; the place or places of payment; and
        that payment will be made upon presentation and surrender of the
        Securities to be redeemed.  In the case of a redemption by the
        Company at the option of the holder of a Security pursuant to
        Section 3(d), the notices given by the Fiscal Agent informing a
        holder of such holder's entitlement to redeem shall also specify
        that a holder electing redemption will be entitled to revoke its
        election by delivering a written notice of such revocation,
        together with the holder's non-transferable receipt for such
        Security, to the agency designated by the Company as the place
        for the payment of the Securities to be so redeemed not later
        than the fifth day prior to the Holder Redemption Date.  In the
        case of a redemption in part at the option of the Company,
        notices shall specify the aggregate principal amount of
        Securities to be redeemed and the aggregate principal amount of
        Securities outstanding after such partial redemption.  The first
        notice shall specify the last date on which exchanges or
        transfers of Securities may be made, and the second notice shall
        specify the serial numbers of the Securities and the portions
        thereof called for redemption.  In the case of a redemption in
        whole or in part by the Company, notices shall specify the date
        the conversion privilege expires in accordance with Section 4(a)
        hereof.  Such notices shall also state that the conditions
        precedent, if any, to such redemption have occurred.

                  (f)  If (i) notice of redemption has been given in the
        manner set forth in Section 3(e) hereof with respect to
        Securities to be redeemed at the option of the Company, or (ii)
        notice of redemption has been given by the holder of a Security
        to be redeemed pursuant to Section 3(d) hereof, the Securities so
        to be redeemed shall become due and payable on the applicable
        redemption date specified in such notice and upon presentation
        and surrender of the Securities at the place or places specified
        in the notices given by the Company with respect to such
        redemption, the Securities shall be paid and redeemed by the
        Company, at the places and in the manner and currency herein
        specified and at the redemption price.

                                      A-13PAGE
<PAGE>

             4.   Conversion.

                  (a)  Subject to and upon compliance with the provisions
        of the Fiscal Agency Agreement, a holder of Securities is
        entitled, at its option, at any time on or after the date that is
        the later of (i) the Exchange Date and (ii) May 30, 1996 and on
        or before the close of business on March 15, 2001, or in the case
        of a Security or portion thereof that is called for redemption by
        the Company, or the holder thereof elects to have such Security
        or portion thereof redeemed by the Company pursuant to Section
        3(d) hereof, then in respect of such Security or such portion
        thereof until and including, but (unless the Company and the
        Guarantor default in making the payment due upon redemption) not
        after, the close of business on the 15th day next preceding the
        date fixed for redemption (or if such date is not a business day,
        as described in Section 11 hereof in New York City, then the next
        succeeding business day), to convert such Security (or any
        portion of the principal amount thereof which is U.S. $1,000 or
        an integral multiple thereof), at the principal amount thereof,
        or of such portion, into fully paid and nonassessable shares
        ("Conversion Shares")  (calculated as to each conversion to the
        nearest 1/1000 of a share) of common stock, par value $.10 per
        share of the Company ("Common Stock"), at a Conversion Price
        equal to U.S. $20.34 aggregate principal amount of Securities
        for each Conversion Share (the "Conversion Price") (or at the
        current adjusted Conversion Price if an adjustment has been made
        as provided herein) by surrender of the Security, or in the case
        of a Security submitted for redemption pursuant to Section 3(d)
        hereof, satisfactory evidence of such submission, together with
        (i) if a Registered Security (if so required by the Company or
        the Fiscal Agent), instruments of transfer in form satisfactory
        to the Company and the Fiscal Agent, duly executed by the
        registered holder or by his duly authorized attorney, and (ii)
        the conversion notice hereon duly executed (x) at the principal
        corporate trust office of the Fiscal Agent, or at such other
        office or agency of the Company as may be designated by it for
        such purpose in New York City, or (y) subject to any laws or
        regulations applicable thereto and subject to the right of the
        Company to terminate the appointment of any such conversion
        agency, at Chemical Bank, Chemical Bank House, 125 London Wall,
        London EC2Y 5AJ, England, and if the Securities are listed on
        the Luxembourg Stock Exchange and so long as listed thereon,
        Banque Internationale a Luxembourg, S.A., 69, Route d'Esch,
        L-1470 Luxembourg, or at such other offices or agencies as the
        Company may designate.

                  (b)  No payment or adjustment shall be made upon any
        conversion for dividends on the Common Stock delivered on
        conversion.  Additional Amounts, if any, thereon will be paid to
        the holder within five business days after presentment for
        conversion. No fractions of shares or scrip representing
        fractions of shares will be issued or delivered on conversion,
        but instead of any fractional interest the Company shall pay a

                                      A-14PAGE
<PAGE>
        cash adjustment as provided in the Fiscal Agency Agreement.  Such
        conversion shall be so affected by the Company, except payment of
        Additional Amounts, if any, thereon which will be paid by the
        Paying Agent.

                  (c)  (i) In case at any time the Company shall pay or
        make a dividend or other distribution on any class of capital
        stock of the Company in shares of Common Stock, the Conversion
        Price in effect at the opening of business on the day following
        the date fixed for the determination of stockholders entitled to
        receive such dividend or other distribution shall be reduced so
        that the same shall equal the price determined by multiplying
        such Conversion Price by a fraction of which the numerator shall
        be the number of shares of Common Stock outstanding at the close
        of business on the date fixed for such determination and the
        denominator shall be the sum of such number of shares and the
        total number of shares of Common Stock constituting such
        dividend or other distribution, such adjustment to become
        effective immediately after the opening of business on the day
        following the date fixed for such determination.

                       (ii) In the case at any time the Company shall (A)
        subdivide its outstanding shares of Common Stock, (B) combine its
        outstanding shares of Common Stock into a smaller number of
        shares, or (C) issue by reclassification of its shares of Common
        Stock (including any such reclassification in connection with a
        consolidation or merger in which the Company is the continuing
        corporation) any shares of capital stock, the Conversion Price
        in effect at the effective date of such subdivision, combination
        or reclassification shall be proportionately adjusted so that
        the holder of any Security surrendered for conversion after such
        time shall be entitled to receive the aggregate number and kind
        of shares which, if such Security had been converted immediately
        prior to such time, the holder would have owned upon such
        conversion and been entitled to receive upon such subdivision,
        combination or reclassification.  Such adjustment shall become
        effective immediately after the effectiveness of such
        subdivision, combination or reclassification.  Such adjustment
        shall be made successively whenever any event listed above shall
        occur.

                       (iii)  In case at any time the Company shall fix a
        record date for the issuance of rights or warrants to all holders
        of its Common Stock entitling them to subscribe for or purchase
        Common Stock at a price per share less than the current market
        price per share of Common Stock (determined as provided in
        paragraph (v) of this subsection (c)) on such record date, the
        Conversion Price in effect at the opening of business on the day
        following such record date shall be reduced so that the same
        shall equal the price determined by multiplying such Conversion
        Price by a fraction of which the numerator shall be the number
        of shares of Common Stock outstanding at the close of business
        on such record date plus the number of shares of Common Stock
        which the aggregate of the offering price of the total number of

                                      A-15PAGE
<PAGE>
        shares so offered for subscription or purchase would purchase at
        such current market price per share of Common Stock and the
        denominator shall be the number of shares of Common Stock
        outstanding at the close of business on such record date plus
        the number of shares so offered for subscription or purchase,
        such reduction to become effective immediately after the opening
        of business on the day following such record date.  Such
        reduction shall be made successively whenever such a record date
        is fixed; and in the event that such rights or warrants are not
        so issued, the Conversion Price shall again be adjusted to be
        the Conversion Price which would then be in effect if such
        record date had not been fixed.

                       (iv) In case at any time the Company shall fix a
        record date for the making of a distribution, by dividend or
        otherwise, to all holders of its shares if Common Stock, of
        evidences of its indebtedness or assets (including securities,
        but excluding any dividend or distribution referred to in
        paragraph (i) of this subsection (c), any rights or warrants
        referred to in paragraph (iii) of this subsection (c), and any
        dividend or distribution paid in cash out of the retained
        earnings of the Company), then in each such case the Conversion
        Price in effect after such record date shall be determined by
        multiplying the Conversion Price in effect immediately prior to
        such record date by a fraction, of which numerator shall be the
        total number of outstanding shares of Common Stock multiplied by
        the current market price per share of Common Stock (determined as
        provided in paragraph (v) of this subsection (c)) on such record
        date, less the fair market value (as determined by the Board of
        Directors of the Company, whose determination shall be
        conclusive and described in a statement filed with the Fiscal
        Agent) of the portion of the assets or evidences of indebtedness
        so to be distributed, and of which denominator shall be the
        total number of outstanding shares of Common Stock multiplied by
        such current market price per share of Common Stock.  Such
        adjustment shall be made successively whenever such a record
        date is fixed; and in the event that such distribution is not so
        made, the Conversion Price shall again be adjusted to be the
        Conversion Price which would then be in effect if such record
        date has not been fixed.

                       (v)  For the purpose of any computation under
        paragraphs (iii) and (iv) of this subsection (c), the current
        market price per share of Common Stock on any date shall be
        deemed to be the average of the Closing Prices (as defined below)
        for the 15 consecutive trading days upon which the principal
        trading market for the Common Stock is open and selected by the
        Company commencing not less than 20 nor more than 30 days before
        the day in question.  The "Closing Price" for any day shall be
        the last reported sales prices regular way or, in case no such
        reported sale takes place on such day, the average of the
        reported closing bid and asked prices regular way, in either case
        on the American Stock Exchange or, if the Common Stock is not or
        admitted to trading on such exchange, on the principal national

                                      A-16PAGE
<PAGE>
        securities exchange on which the Common Stock is listed or
        admitted to trading or, if not listed or admitted to trading on
        any national securities exchange, the closing sale price quoted
        on the Nasdaq National Market, or if not so quoted, as
        determined by the Company.

                       (vi) The Company may make such adjustments in the
        Conversion Price, in addition to those required by paragraphs
        (i), (ii) and, (iii) selected by the Company of this section, as
        it considers to be advisable in order that any event treated for
        United States Federal income tax purposes as a dividend of stock
        or stock rights shall not be taxable to the recipients.

                       (vii)  No adjustment in the Conversion Price shall
        be required unless such adjustment would require an increase or
        decrease of at least U.S. $.25 in such Conversion Price;
        provided, however, that any adjustment which by reason of this
        paragraph (vii) is not required to be made shall be carried
        forward and taken into account in any subsequent adjustment. 
        All calculations under this subsection (c) shall be made to the
        nearest cent or to the nearest 1/1000 of a share, as the case
        may be.

                  (d)  Whenever the Conversion Price is adjusted and in
        the event of certain other corporate actions, as herein provided,
        the Company shall give notice, all as provided in the Fiscal
        Agency Agreement.

                  (e)  The Company shall in good faith use its best
        efforts, to (i) cause all registrations with, and to obtain any
        approvals by, any governmental authority under any Federal or
        State law of the United States that may be required in connection
        with the conversion of the Securities into Common Stock and the
        resale thereof and (ii) to list the shares of Common Stock
        required to be issued or delivered upon conversion of securities
        (or other securities issuable upon conversion of the Securities)
        prior to such issue or delivery on such national securities
        exchange or automated over-the-counter trading market where such
        Common Stock is listed or traded at the time of such delivery.

                  (f)  The Company shall, at all times, have reserved and
        available, free from preemptive rights, out of its authorized
        but unissued shares of Common Stock, for the purpose of
        effecting the conversion of Securities, the full number of
        shares of Common Stock then issuable upon the conversion of all
        Securities (based on the aggregate principal amount of
        Securities outstanding).  The Company covenants that all shares
        of Common Stock which may be issued or delivered upon conversion
        of Securities will upon issuance be fully paid and nonassessable.



                  (g)  In case of any consolidation with, or merger of
        the Company into, any other corporation, or in case of any merger

                                      A-17PAGE
<PAGE>
        of another corporation into the Company (other than a merger
        which does not result in any reclassification, conversion,
        exchange or cancellation of outstanding shares of Common Stock of
        the Company), or in case of any sale or transfer of all or
        substantially all of the assets of the Company (which shall not
        include the sale or transfer of any portion of the assets of the
        Company to any corporation which, immediately following such
        transfer is at least 51% owned by the Company, provided that
        such sale or transfer does not result in the reclassification,
        conversion, exchange or cancellation of outstanding shares of
        Common Stock of the Company), the corporation formed by such
        consolidation or resulting from such merger or which acquires
        such assets, as the case may be, shall execute and deliver to
        the Fiscal Agent an amendment to the Fiscal Agency Agreement
        providing that the holder of each Security shall have the right
        during the period such Security shall be convertible as
        specified in section (a) hereof to convert such Security only
        into the kind and amount of securities, cash and other property
        receivable upon such consolidation, merger, sale or transfer by
        a holder of the number of shares of Common Stock of the Company
        into which such Security might have been converted immediately
        prior to such consolidation, merger, sale or transfer assuming,
        if such consolidation, merger, sale or transfer is prior to the
        period such Security shall be convertible as specified in
        subsection (a) hereof, that the Securities were convertible at
        such time at the initial Conversion Price as adjusted from March
        7, 1996 to such time pursuant to paragraphs (i), (ii), (iii),
        (iv) and (vi) of subsection (c) hereof.  Such amendment shall
        provide for adjustments which, for events subsequent to the
        effective date of such amendment, shall be as nearly equivalent
        as may be practicable to the adjustments provided for herein. 
        The above provisions of this subsection shall similarly apply to
        successive consolidations, mergers, sales or transfers.

             5.   Events of Default.  In the event that any of the
        following ("Events of Default") shall occur and be continuing:

                  (a)  the Company shall fail to pay when due the
        principal of any of the Securities whether at maturity or upon
        redemption or otherwise; or

                  (b)  the Company shall fail to pay any required payment
        of any Additional Amounts (as described in Section 2 hereof) on
        any of the Securities for a period of 10 days after the date when
        due; or

                  (c)  the Company shall fail duly to perform or observe
        any other term, covenant or agreement contained in any of the
        Securities or in the Fiscal Agency Agreement or the Guarantor
        shall fail to perform or observe any term, covenant or 
        agreement contained in a Guarantee endorsed on any of the
        Securities or in the Fiscal Agency Agreement, for a period of 60
        days after the date on which written notice of such failure,
        requiring the Company or the Guarantor, as the case may be, to

                                      A-18PAGE
<PAGE>
        remedy the same, shall first have been given to the Company and
        the Fiscal Agent by the holders of at least 25% in aggregate
        principal amount of the Securities at the time outstanding;
        provided, however, that in the event the Company or the
        Guarantor shall within the aforesaid period of 60 days commence
        legal action in a court of competent jurisdiction seeking a
        determination that the Company or the Guarantor, as the case may
        be, had not failed duly to perform or observe the term or terms,
        covenant or covenants or agreement or agreements specified in
        the aforesaid notice, such failure shall not be an Event of
        Default unless the same continues for a period of 10 days after
        the date of any final determination to the effect that the
        Company or the Guarantor had failed to duly perform or observe
        one or more of such terms, covenants or agreements; or

                  (d)  a court having jurisdiction in the premises shall
        enter a decree or order for relief in respect of the Company or
        the Guarantor in an involuntary case or proceeding under any
        applicable bankruptcy, insolvency, reorganization or other
        similar law now or hereafter in effect, or appointing a
        receiver, liquidator, assignee, custodian, trustee, sequestrator
        (or similar official) of the Company or the Guarantor or for any
        substantial part of the property of either of them or ordering
        the winding-up or liquidation of the affairs of either of them
        and such decree or order shall remain unstayed and in effect for
        a period of 20 consecutive days; or

                  (e)  the Company or the Guarantor shall commence a
        voluntary case or proceeding under any applicable bankruptcy,
        insolvency, reorganization or other similar law now or hereafter
        in effect, or shall consent to the entry of an order for relief
        in an involuntary case under any such law, or shall consent to
        the appointment of or taking possession by a receiver,
        liquidator, assignee, trustee, custodian, sequestrator (or
        similar official) of the Company or the Guarantor, as the case
        may be, or for any substantial part of its property, or shall
        make any general assignment for the benefit of creditors, or
        shall admit in writing its inability to pay its debts as they
        become due or shall take any corporate action in furtherance of
        any of the foregoing; or

                  (f)  an event of default, as defined in any indenture
        or instrument evidencing or under which the Company shall have at
        least $10,000,000 outstanding (or its equivalent in another
        currency), in aggregate principal amount of indebtedness for
        borrowed money, shall happen and be continuing and such default
        shall involve the failure to pay the principal of such
        indebtedness (or any part thereof), when due and payable after
        the expiration of any applicable grace period with respect
        thereto, or such indebtedness shall have been accelerated so the
        same shall be or become due and payable prior to the date on
        which the same would otherwise have become due and payable, and
        failure to pay shall not have been cured by the Company within
        20 days after such failure or such acceleration shall not be

                                      A-19PAGE
<PAGE>
        rescinded or annulled within 20 days after notice thereof shall
        have first been given to the Company; provided that if such
        event of default under such indenture or instrument shall be
        remedied or cured by the Company or waived by the holders of
        such indebtedness, then the Event of Default hereunder by reason
        thereof shall be deemed likewise to have been thereupon
        remedied, cured or waived without further action upon the part
        of any of the holders of Securities; then the holder of this
        Security may, at such holder's option, declare the principal of
        this Security (and Additional Amounts under Section 2 hereof, if
        any, thereon) to be due and payable immediately by written
        notice to the Company, the Guarantor and the Fiscal Agent, and
        if any such Event of Default shall continue at the time of
        receipt of such written notice, the principal of this Security
        (and Additional Amounts, if any, hereon) shall become
        immediately due and payable, subject to the proviso of
        subsection (c) of this Section 5. Upon payment of such amount of
        principal (and Additional Amounts pursuant to Section 2 hereof,
        if any), all of the Company's obligations in respect of payment
        of principal of (and Additional Amounts, if any, on) this
        Security shall terminate.  Interest on overdue principal (and
        Additional Amounts, if any) shall accrue from the date on which
        such principal (and Additional Amounts, if any) were due and
        payable to the date such principal (and Additional Amounts, if
        any) are paid or duly provided for, at the rate of 5% per annum
        (to the extent payment of such interest shall be legally
        enforceable).  Any acceleration of this Security pursuant to
        this Section 5 shall not affect the subordination provisions of
        Section 7 hereof.

                  If an Event of Default, as defined in this Section 5,
        with respect to the Securities, or an event which would, with the
        passing of time or the giving of notice, or both, be an Event of
        Default, shall occur and be continuing, the Company or the
        Guarantor, as the case may be, shall within five Business Days
        of becoming aware thereof notify the Company or the Guarantor,
        as the case may be, and the Fiscal Agent in writing of such
        Event of Default, and the Fiscal Agent shall thereupon promptly
        notify all of the holders of the Securities of such Event of
        Default.

             6.   Merger, Consolidation, Sale, Conveyance or Assumption.

                  (a)  The Company will not merge or consolidate with, or
        sell or convey all or substantially all of its assets to, any
        other corporation, unless (i) either (A) the Company shall be the
        surviving corporation in the case of a merger, (B) the assets
        sold or conveyed shall be owned by a corporation which,
        immediately following such sale or conveyance, is at least 51%
        owned by the Company, provided that such sale or conveyance does
        not result in the reclassification, conversion, exchange or
        cancellation of outstanding shares of Common Stock of the
        Company, or (C) (I) the surviving, resulting or transferee
        corporation shall expressly assume the due and punctual payment

                                      A-20PAGE
<PAGE>
        (including Additional Amounts pursuant to Section 2 hereof, if
        any) of all the Securities, according to their tenor, and the
        due and punctual performance of all of the covenants and
        obligations of the Company under the Securities and the Fiscal
        Agency Agreement, by supplemental agreement reasonably
        satisfactory to the Fiscal Agent and (II) the Fiscal Agent shall
        have received the documentation required in the context by the
        Fiscal Agency Agreement, (ii) the surviving, resulting or
        transferee corporation, if not organized and validly existing
        under the laws of the United States, shall expressly agree to
        make payments under the Securities free of any deduction or
        withholding for any and all then existing or future withholding
        taxes, levies, imposts and charges whatsoever imposed by or for
        the account of the jurisdiction where such successor corporation
        is generally subject to taxation (or any political subdivision
        or taxing authority thereof or therein) in a manner equivalent
        to that set forth herein, subject to the exceptions contained in
        such forms of the Securities, and (iii) the Company or such
        successor corporation, as the case may be, shall not,
        immediately after such merger, consolidation, sale or
        conveyance, be in default in the performance of any covenants or
        obligations of the Company under the Securities or the Fiscal
        Agency Agreement.

                  (b)  Upon any merger, consolidation, sale, conveyance
        or assumption as provided in Section 6(a), the successor or
        assuming corporation shall succeed to and be substituted for,
        and may exercise every right and power of and be subject to all
        the obligations of, the Company under the Securities and Fiscal
        Agency Agreement, with the same effect as if such successor or
        assuming corporation had been named as the Company therein and
        herein and the Company shall be released from its liability as
        obligor under the Securities and Fiscal Agency Agreement;
        provided that any successor or assuming corporation shall have
        the right to redeem the Securities pursuant to Section 3(b)
        hereof only as a result of circumstances which occur subsequent
        to such merger, consolidation, sale, conveyance or assumption
        and as a result of which the Company would have had such right
        if the Company had remained the obligor on the Securities.

             7.   Agreement of Subordination of Securities.

                  (a)  The Company, for itself, its successors and
        assigns, covenants and agrees, and each holder of Securities by
        his acceptance thereof, likewise covenants and agrees, that the
        payment of the principal of and Additional Amounts (pursuant to
        Section 2 hereof) on each and all of the Securities is hereby
        expressly subordinated, to the extent and in the manner
        hereinafter set forth, in right of payment to the prior payment
        in full of all Senior Indebtedness of the Company (as defined
        below).


                                      A-21PAGE
<PAGE>
                  "Senior Indebtedness of the Company" or "Senior
        Indebtedness" shall mean the principal of, premium, if any, and
        interest on and all other amounts due on or with respect to the
        following whether outstanding at the date of execution of the
        Fiscal Agency Agreement or thereafter incurred or created:

                  (i)  indebtedness of the Company for money borrowed by
        the Company (excluding the Securities, but including, without
        limitation, purchase money obligations), whether or not
        evidenced by debentures, bonds, notes or other corporate debt
        securities or similar instruments issued by the Company;
        provided, however, that Senior Indebtedness shall not include
        the Company's 4% Convertible Subordinated Debentures due 2001
        issued to the Guarantor, the obligations represented by which
        shall rank pari passu with the obligations represented hereby in
        right of payment;

                  (ii) obligations to reimburse any bank or other person
        in respect of amounts paid under letters of credit;

                  (iii)  leases of real property, equipment or other
        assets, which leases are capitalized in the Company's financial
        statements in accordance with generally accepted accounting
        principles;

                  (iv) commitment, standby and other fees due and payable
        to financial institutions with respect to credit facilities
        available to the Company;

                  (v)  obligations of the Company under interest rate and
        currency swaps, floors, caps or other similar arrangements
        intended to hedge interest rates or currency exposure;

                  (vi) indebtedness secured by any mortgage, pledge, lien
        or other encumbrance on property which is owned or held by the
        Company subject to such mortgage, pledge, lien or other
        encumbrance, whether or not the indebtedness secured thereby
        shall have been assumed by the Company;

                  (vii)  obligations of the Company constituting
        guarantees of indebtedness of or joint obligations with another
        or others which would be included in the preceding clauses (i),
        (ii), (iii), (iv), (v) or (vi); and

                  (viii)    modifications, renewals, extensions or
        refundings of any of the indebtedness, leases, fees or
        obligations referred to in the preceding clauses (i), (ii),
        (iii), (iv), (v), (vi) or (vii), or debentures, notes or other
        evidences of indebtedness issued in exchange therefor;

        provided that Senior Indebtedness shall not include any
        particular indebtedness, lease, fee, obligation, modification,
        renewal, extension, refunding or exchanged securities if, under
        the express provisions of the instrument creating or evidencing

                                      A-22PAGE
<PAGE>
        the same, or pursuant to which the same is outstanding, such
        indebtedness, lease, fee or obligation or such modification,
        renewal, extension, refunding or exchanged security is stated to
        be not superior in right to payment to the Securities.

                  (b)  (i) In the event of any insolvency or bankruptcy
        proceedings, or any receivership, liquidation, reorganization or
        other similar proceedings in connection therewith, relative to
        the Company or to its creditors, in their capacity as such
        creditors, or to its property, or in the event of any
        proceedings for voluntary liquidation, dissolution or other
        winding up of the Company, whether or not involving insolvency
        or bankruptcy, or in the event of any assignment for the benefit
        of creditors of the Company or any marshalling of assets of the
        Company, then the holders of Senior Indebtedness of the Company
        shall first be entitled to receive payment in full of the
        principal of (and premium, if any, on) and interest, including
        interest thereon accruing after the commencement of any such
        proceeding, and other amounts due on or with respect to, all
        Senior Indebtedness of the Company before the holders of any of
        the Securities shall be entitled to receive any payment on
        account of the principal of and Additional Amounts (pursuant to
        Section 2 hereof) on the Securities, and to that end the holders
        of Senior Indebtedness of the Company shall be entitled to
        receive for application in payment thereof any payment or
        distribution of any kind or character, whether in cash, property
        or securities, which may be payable or deliverable in any such
        proceedings in respect of the Securities, other than securities
        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
        subordinate, at least to the extent provided in this Section 7
        with respect to the Securities, to the payment of all Senior
        Indebtedness of the Company, provided that the rights of the
        holders of Senior Indebtedness of the Company are not altered by
        such reorganization or readjustment.  For the purposes of this
        Section 7, no consolidation, merger, conveyance or transfer made
        pursuant to the provisions of Section 6 shall be deemed to be a
        liquidation, reorganization, dissolution or other winding up of
        the Company.

                  (ii) If under the circumstances set forth in paragraph
        (i) of this subsection, and notwithstanding the provisions
        thereof, any payment or distribution of assets of the Company of
        any kind, whether in cash, property or securities (other than
        securities 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 Section
        7 with respect to the Securities, to the payment of all Senior
        Indebtedness of the Company, provided that the rights of the
        holders of Senior Indebtedness of the Company are not altered by
        such reorganization or readjustment), shall be received by the
        holders of the Securities before all Senior Indebtedness of the

                                      A-23PAGE
<PAGE>
        Company is paid in full, such payment or distribution shall be
        paid over to the holders of Senior Indebtedness of the Company,
        ratably, for application to the payment of all Senior
        Indebtedness of the Company remaining unpaid until all Senior
        Indebtedness of the Company shall have been paid in full, after
        giving effect to any concurrent payment or distribution to the
        holders of such Senior Indebtedness of the Company.

                  (iii)  Upon any distribution of assets of the Company
        referred to in this Section, the holders of Securities shall be
        entitled to rely upon any final order or decree of a court of
        competent jurisdiction in which such dissolution, winding up,
        liquidation or reorganization proceedings are pending, and the
        holders of Securities shall be entitled to rely upon a
        certificate of the liquidating trustee or agent or other person
        making any distribution to the holders of Securities for the
        purpose of ascertaining the persons entitled to participate in
        such distribution, the holders of the Senior Indebtedness of the
        Company and other indebtedness of the Company, the amount
        thereof or payable thereon, the amount or amounts paid or
        distributed thereon and all other facts pertinent thereto or to
        this Section.

                  (c)  (i) Upon the maturity of any Senior Indebtedness
        of the Company by lapse of time, acceleration or otherwise, all
        principal thereof (and premium, if any) and interest due
        thereon, including interest thereon accruing after the
        commencement of any proceeding of the type referred to in
        paragraph (i) of Section 7(b) above, and all other amounts due
        on or with respect thereto, shall first be paid in full, or such
        payment duly provided for in cash, before any payment, directly
        or indirectly, is made on account of the principal of and
        Additional Amounts (pursuant to Section 2 hereof) on the
        Securities.

                  (ii) Upon the happening of an event of default with
        respect to any Senior Indebtedness of the Company, as defined
        therein or in the instrument under which it is outstanding
        permitting the holders to accelerate the maturity thereof, then,
        unless and until such event of default shall have been cured or
        waived or shall have ceased to exist, no payment shall be made by
        the Company, directly or indirectly, on account of the principal
        of, premium and Additional Amounts (pursuant to Section 2 hereof)
        on the Securities.

                  (d)  In case cash, securities or other property
        otherwise payable or deliverable to the holders of the Securities
        shall have been applied, pursuant to Section 7(b) or 7(c), to the
        payment of Senior Indebtedness of the Company, then, upon the
        payment in full of all Senior Indebtedness of the Company, the
        holders of the Securities shall be subrogated to any rights of
        any holders of Senior Indebtedness of the Company to receive any
        further payment or distributions applicable to Senior
        Indebtedness of the Company until the principal of and

                                      A-24PAGE
<PAGE>
        Additional Amounts (pursuant to Section 2 hereof) on the
        Securities shall have been paid in full, and such payments or
        distributions received by the holders of the Securities, by
        reason of such subrogation, of cash, securities or other
        property which otherwise would be paid or distributed to the
        holders of Senior Indebtedness of the Company shall, as between
        the Company and its creditors other than the holders of Senior
        Indebtedness of the Company, on the one hand, and the holders of
        the Securities, on the other hand, be deemed to be a payment by
        the Company on account of Senior Indebtedness of the Company and
        not on account of the Securities.

                  (e)  No present or future holder of any Senior
        Indebtedness of the Company shall be prejudiced in any way in the
        right to enforce the subordination of the Securities by any act
        or failure to act on the part of the Company.  The provisions of
        this Section are solely for the purpose of defining the relative
        rights of the holders of Senior Indebtedness of the Company, on
        the one hand, and the holders of the Securities, on the other
        hand, against the Company and its assets, and nothing contained
        in this Section shall impair, as between the Company and the
        holder of any Security, the obligation of the Company, which is
        unconditional and absolute, to pay to the holder thereof, the
        principal thereof and Additional Amounts (pursuant to Section 2
        hereof) thereon as and when the same shall become due and
        payable in accordance with the terms thereof, or prevent the
        holder of any Security, upon default hereunder or under such
        Security, from exercising all rights, powers and remedies
        otherwise provided herein or therein or by applicable law, all
        subject to the rights of the holders of Senior Indebtedness of
        the Company under this Section to receive cash, property or
        securities otherwise payable or deliverable to the holders of
        the Securities.

                  (f)  Nothing contained in this Section or in any of the
        Securities shall prevent at any time, except under the
        conditions described in Sections 7(b) and (c) hereof or during
        the pendency of any dissolution, winding up, liquidation or
        reorganization proceedings therein referred to, the Company from
        making payments at any time of principal of or Additional
        Amounts (pursuant to Section 2 hereof) on the Securities. 
        Nothing contained in this Section shall prevent conversions of
        Securities.

             8.   Replacement, Transfer and Exchange of Securities.

                  (a)  In case any Security  shall at any time become
        mutilated, destroyed, stolen or lost and such Security or
        evidence of the loss, theft or destruction thereof (together with
        the indemnity hereinafter referred to and such other documents or
        proof as may be required) shall be delivered to the Fiscal Agent,
        a new Security of like tenor and date and having the Guarantee
        endorsed thereon will be issued by the Company in exchange for
        the Security so mutilated, or in lieu of the Security so

                                      A-25PAGE
<PAGE>
        destroyed, stolen or lost, but, in the case of a destroyed,
        stolen or lost Security only upon receipt of evidence
        satisfactory to the Fiscal Agent, the Company and the Guarantor
        that such Security was destroyed, stolen or lost, and if
        required by the Fiscal Agent, the Company or the Guarantor, upon
        receipt also of indemnity satisfactory to the Fiscal Agent, the
        Company and the Guarantor.  All expenses and reasonable charges
        associated with procuring such indemnity and with the
        preparation, authentication and delivery of a new Security shall
        be borne by the owner of the Security so mutilated, destroyed,
        stolen or lost.

                  (b)  As provided in the Fiscal Agency Agreement and
        subject to certain limitations therein set forth, Bearer
        Securities are exchangeable at, subject to applicable laws and
        regulations, the offices of the paying agencies in London and, if
        the Securities are listed on the Luxembourg Stock Exchange and so
        long as listed thereon, Luxembourg or as designated by the
        Company for such purpose pursuant to the Fiscal Agency Agreement,
        for an equal aggregate principal amount of Registered Securities
        in the denominations of $1,000 and integral multiples thereof
        and/or Bearer Securities of authorized denominations, and
        Registered Securities are exchangeable at the Corporate Trust
        Office of the Fiscal Agent in New York City or, subject to
        applicable laws and regulations, the offices of the paying
        agencies in London and, if the Securities are listed on the
        Luxembourg Stock Exchange and so long as listed thereon,
        Luxembourg or as designated by the Company for such purpose
        pursuant to the Fiscal Agency Agreement, for an equal aggregate
        principal amount of Registered Securities of authorized
        denominations as requested by the holder surrendering the same.
        Registered Securities will not be exchangeable for Bearer
        Securities.  The Company shall not be required (a) to exchange
        Bearer Securities for Registered Securities, if as a result, the
        Company or the Guarantor would incur adverse consequences under
        United States Federal income tax laws in effect of the time of
        exchange, or (b) in the event of a redemption in part, (i) to
        register the transfer of Registered Securities or to exchange
        Bearer Securities for Registered Securities for a period of 15
        days immediately preceding the date notice is given identifying
        the serial numbers of the Securities called for such redemption;
        (ii) to register the transfer or exchange of any such Registered
        Securities, or portion thereof, called for redemption; or (iii)
        to exchange any such Bearer Securities called for redemption;
        provided, however, that a Bearer Security called for redemption
        may be exchanged for a Registered Security that is
        simultaneously surrendered, with written instruction for payment
        on the date fixed for redemption.  In the event of redemption or
        conversion of a Security in part only, a new Security or
        Securities for the unredeemed or unconverted portion hereof will
        be issued in the name of the holder thereof.


                                      A-26PAGE
<PAGE>
                  (c)  The costs and expenses of effecting any exchange
        or registration of transfer pursuant to the foregoing provisions,
        except for the expenses of delivery by other than regular mail
        (if any) and except, if the Company shall so require, the
        payment of a sum sufficient to cover any tax or other
        governmental charge or insurance charges that may be imposed in
        relation thereto, will be borne by the Company.

                  (d)  The Company has initially appointed as registrar
        and transfer agent the Fiscal Agent acting through the Corporate
        Trust Office in New York.  The Company has also initially
        appointed Banque Internationale a Luxembourg as a transfer
        agent, subject to the listing of the Securities on the
        Luxembourg Stock Exchange.  The Company may at any time
        terminate the appointment of the registrar and transfer agent
        and appoint additional or other registrars and transfer agents
        or approve any change in an office through which the registrar
        and transfer agent acts; provided that, until all of the
        Securities have been delivered to the Fiscal Agent for
        cancellation, or monies sufficient to pay the Securities have
        been made available for payment and either paid or returned to
        the Company as provided in the Securities, the Company will
        maintain a registrar and transfer agent in the City of New York
        in the United States.

                  (e)  For purposes of the provisions of this Security
        and the Fiscal Agency Agreement, any Security authenticated and
        delivered pursuant to the Fiscal Agency Agreement shall, as of
        any date of determination, be deemed to be "outstanding", except
        for:

                       (i)  Securities previously canceled by the Fiscal
        Agent or delivered to the Fiscal Agent for cancellation;

                       (ii) Securities which have been called for
        redemption by the Company in accordance with Section 3 hereof or
        which have become due and payable at maturity or otherwise and
        with respect to which monies sufficient to pay the principal
        thereof (including Additional Amounts, if any) shall have been
        made available to the Fiscal Agent; or

                       (iii)  Securities in lieu of or in substitution
        for which other Securities have been authenticated and delivered
        pursuant to the Fiscal Agency Agreement;

        provided, however, that in determining whether the holders of
        the requisite principal amount of outstanding Securities are
        present at a meeting of holders of Securities for quorum
        purposes or have given any request, demand, authorization,
        direction, notice, consent or waiver hereunder, Securities owned
        by the Company or the Guarantor or any subsidiary thereof shall
        be disregarded and deemed not to be outstanding.

             9.   Modifications and Amendments.

                                      A-27PAGE
<PAGE>

                  (a)  Without the consent of any holders of Securities,
        modifications of or amendments to the Fiscal Agency Agreement or
        the Terms and Conditions of the Securities may be made for any
        of the following purposes:

                       (i)  to evidence the succession of another
        corporation to the Company or the Guarantor and the assumption by
        any such successor of the covenants of the Company or the
        Guarantor, as the case may be, in the Fiscal Agency Agreement,
        the Securities or the Guarantees;

                       (ii) to add to the covenants of the Company or the
        Guarantor for the benefit of the holders of Securities, or to
        surrender any right or power herein conferred upon the Company or
        the Guarantor;

                       (iii)  to permit payment of principal of Bearer
        Securities in the United States, provided that such payment is
        permitted by United States tax laws and regulations then in
        effect;

                       (iv) to make provision with respect to the
        conversion rights of holders of Securities in the event of a
        consolidation, merger or sale of substantially all of the assets
        of the Company;

                       (v)  to cure any ambiguity, to correct or
        supplement any defective provision in the Fiscal Agency Agreement
        which may be inconsistent with any other provision therein, or to
        make any other provisions with respect to matters or questions
        arising under this Security or the Fiscal Agency Agreement,
        provided such action pursuant to this clause (v) will not
        materially adversely affect the interests of the holders of
        Securities; or

                       (vi) to increase the principal amount of
        Securities that may e issued pursuant to the Fiscal Agency
        Agreement; or

                       (vii)  to delete the agreement of subordination
        contained in Section 7 hereof or in Section 4 of the Guarantee
        and any other references thereto.

                  (b)  Modifications and amendments to the Fiscal Agency
        Agreement or to the Terms and Conditions of the Securities may
        be made, and future compliance with or past default by the
        Company under any of the provisions thereof may be waived, with
        the written consent of the holders of not less than a majority
        in aggregate principal amount of the Securities at the time
        outstanding (excluding for purposes of this calculation the
        aggregate principal amount of Securities held by the Company or
        the Guarantor or any of its subsidiaries), or of such lesser
        percentage as may act at a meeting of holders of Securities held

                                      A-28PAGE
<PAGE>
        in accordance with the provisions set forth herein; provided
        that no such modification, amendment or waiver may, without the
        consent of the holder of each such Security affected thereby:

                       (i)  waive a default in the payment of the
        principal of any Security;

                       (ii) change the stated maturity of the principal
        of any Security, or reduce the principal amount thereof or change
        the obligation of the Company to pay Additional Amounts pursuant
        to Section 2 hereof (except as permitted by subsection (a) of
        Section 9 or by the Fiscal Agency Agreement), or change the coin
        or currency in which any Security is payable, or, except as
        otherwise permitted or contemplated by the provisions concerning
        corporate reorganizations, adversely affect the right to redeem
        (pursuant to Section 3(d) hereof) or convert any Securities as
        provided in Sections 3 and 4, respectively, or modify the
        provisions of the Guarantees in a manner adverse to the holders;

                       (iii)  reduce the requirements of Section 10
        hereof for the adoption of a resolution of the quorum required at
        any meeting of holders of Securities at which a resolution is
        adopted, or reduce the percentage in principal amount of the
        outstanding Securities the consent of whose holders is required
        for any amendment or modification of the Fiscal Agency Agreement
        or the Terms and Conditions of the Securities or the consent of
        whose holders is required for any waiver (of compliance with
        certain provisions of the Fiscal Agency Agreement or the
        Securities or certain defaults hereunder and thereunder and their
        consequences) provided for in the Terms and Conditions of the
        Securities;

                       (iv) modify the obligation of the Company and the
        Guarantor to maintain an office or agency in the City of New York
        and outside the United States; or

                       (v)  modify any of the provisions of this section
        except to increase any such percentage or to provide that certain
        other provisions of the Fiscal Agency Agreement or the Securities
        cannot be modified or waived without the consent of the holder
        of each outstanding Security affected thereby.

        It shall not be necessary for any act of holders of Securities
        under this Section to approve the particular form of any
        proposed amendment, modification or waiver, but it shall be
        sufficient if such act shall approve the substance thereof.  Any
        modifications, amendments or waivers to the Fiscal Agency
        Agreement or to these Terms and Conditions will be conclusive
        and binding on all holders of the Securities, whether or not
        they have given such consent or were present at such meeting and
        whether or not notation of such modifications, amendments or
        waivers is made upon the Securities, and on all future holders
        of Securities.  Any instrument given by or on behalf of any
        holder of a Security in connection with any consent to any such

                                      A-29PAGE
<PAGE>
        modification, amendment or waiver will be irrevocable once given
        and will be conclusive and binding on all subsequent holders of
        such Security.

             10.  Meetings and Votes of Holders.

                  (a)  A meeting of holders of Securities may be called
        at any time and from time to time pursuant to this Section for
        any of the following purposes: (i) to give any notice to the
        Company, to the Guarantor or to the Fiscal Agent, or to give any
        directions to the Fiscal Agent, or to consent to the waiving of
        any default hereunder and its consequences, or to take any other
        action authorized to be taken by holders of Securities pursuant
        to these Terms and Conditions; or (ii) to take any other action
        authorized to be taken by or on behalf of the holders of any
        specified aggregate principal amount of the Securities under any
        other provision of the Fiscal Agency Agreement, under applicable
        law or under these Terms and Conditions.

                  (b)  Meetings of holders of Securities may be held at
        such place or places in New York City or London as the Fiscal
        Agent or, in case of its failure to act, the Company, the
        Guarantor or the holders calling the meeting shall from time to
        time determine.

                  The Fiscal Agent may at any time call a meeting of
        holders of the Securities to be held at such time and at such
        place in any of such designated locations as the Fiscal Agent
        shall determine.  Notice of every meeting of holders shall be
        made as specified in the Fiscal Agency Agreement.

                  In case at any time the Company, the Guarantor or the
        holders of at least 25% in aggregate principal amount of the
        Securities shall have requested the Fiscal Agent to call a
        meeting of the holders, by written request setting forth in
        reasonable detail the action proposed to be taken at the meeting,
        and the Fiscal Agent shall not have given the first notice of
        such meeting within 21 days after receipt of such request or
        shall not thereafter proceed to cause the meeting to be held as
        provided herein, then the Company , the Guarantor or the holders
        of Securities in the amount above specified may determine the
        time and the place in such designated locations for such meeting
        and may call such meeting to take any action authorized herein by
        giving notice thereof as provided in the Fiscal Agency Agreement.

                  (c)  To be entitled to vote at any meeting of holders
        of Securities, a person shall be (i) a holder of one or more
        Securities, or (ii) a person appointed by an instrument in
        writing as proxy for a holder or holders of Securities by such
        holder or holders, which proxy need not be a holder of
        Securities. The only persons who shall be entitled to be present
        or to speak at any meeting of holders shall be the persons
        entitled to vote at such meeting and their counsel and any
        representatives of the Fiscal Agent and its counsel and any

                                      A-30PAGE
<PAGE>
        representatives of the Company and its counsel and any
        representatives of the Guarantor and its counsel.  The persons
        entitled to vote a majority in principal amount of outstanding
        Securities shall constitute a quorum for the transaction of all
        business specified in subsection (a) hereof.  No business shall
        be transacted in the absence of a quorum unless a quorum is
        represented when the meeting is called to order.  In the absence
        of a quorum within 30 minutes of the time appointed for any such
        meeting, the meeting shall, if convened at the request of the
        holders of Securities, be dissolved.  In any other case the
        meeting shall be adjourned for a period of not less than 10 days
        as determined by the chairman of the meeting prior to the
        adjournment of such adjourned meeting.  Notice of the
        reconvening of any adjourned meeting shall be given as provided
        in the Fiscal Agency Agreement.  Subject to the foregoing, at
        the reconvening of any meeting adjourned for a lack of a quorum
        the persons entitled to vote 25% in principal amount of the
        Securities outstanding shall constitute a quorum for the taking
        of any action set forth in the notice of the original meeting. 
        Notice of the reconvening of an adjourned meeting shall state
        expressly the percentage of the aggregate principal amount of
        the Securities that shall constitute a quorum.  At a meeting or
        an adjourned meeting duly reconvened and at which a quorum is
        present as aforesaid, any resolution and all matters (except as
        limited by Section 9 of these Terms and Conditions) shall be
        effectively passed and decided if passed or decided by the
        persons entitled to vote a majority in principal amount of the
        Securities represented and voting at such meeting, provided that
        such amount shall not be less than 25 % in principal amount of
        the Securities outstanding.  Any holder of a Security who has
        executed an instrument in writing appointing a person as his
        proxy shall be deemed to be present for the purposes of
        determining a quorum and be deemed to have voted; provided,
        however, that such holder shall be considered as present or
        voting only with respect to the matters covered by such
        instrument in writing.  Any resolution effectively passed or
        decision taken at any meeting of the holders of Securities duly
        held in accordance with this Section 10 shall be binding on all
        the holders of Securities whether or not present or represented
        at the meeting.

                  (d)  Notwithstanding any other provision of this
        Security, the Fiscal Agent may make such reasonable regulations
        as it may deem advisable for any meeting of holders of Securities
        in regard to proof of the holding of Securities and of the
        appointment of proxies and in regard to the appointment and
        duties of inspectors of votes, the submission and examination of
        proxies, certificates and other evidence of the right to vote,
        and such other matters concerning the conduct of the meeting as
        it shall deem appropriate.  Except as otherwise permitted or
        required by any such regulations, the holding of Bearer
        Securities shall be proved by the production of the Bearer
        Securities or by a certificate executed, as depositary, by, and
        the appointment of any proxy shall be proved by having the

                                      A-31PAGE
<PAGE>
        signature of the person executing the proxy witnessed or
        guaranteed by, in each case, any trust company, bank or banker
        satisfactory to the Fiscal Agent.  Such regulations may provide
        that written instruments appointing proxies, regular on their
        face, may be presumed valid and genuine without the proof
        specified herein or other proof. The holding of Registered
        Securities shall be proved by the registry books maintained in
        accordance with the Fiscal Agency Agreement or by a certificate
        or certificates of the Fiscal Agent in its capacity as the
        Company's agent for the maintenance of such books.

                  (e)  The Fiscal Agent shall, by an instrument in
        writing, appoint a temporary chairperson and a temporary
        secretary of the meeting, unless the meeting shall have been
        called by the Company, the Guarantor or by the holders of
        Securities as provided herein and in the Fiscal Agency Agreement,
        in which case the Company, the Guarantor or the holders calling
        the meeting, as the case may be, shall in like manner appoint a
        temporary chairperson and a temporary secretary.  A permanent
        chairperson and a permanent secretary of the meeting shall be
        elected by vote of the holders of a majority in principal amount
        of the Securities represented at the meeting and entitled to
        vote.  At any meeting each holder or proxy shall be entitled to
        one vote for each U.S. $1,000 principal amount of Securities
        held or represented by him; provided, however, that no vote
        shall be cast or counted at any meeting in respect of the
        Securities challenged as not outstanding and ruled by the
        chairperson of the meeting to be not outstanding.  The
        chairperson of the meeting shall have no right to vote, except
        as a holder or proxy.  Any meeting of holders of Securities duly
        called at which a quorum is present may be adjourned from time
        to time by vote of the holders (or proxies for the holders) of a
        majority in principal amount of the Securities represented at
        the meeting and entitled to vote; and the meeting may be held as
        so adjourned without further notice.

                  (f)  The vote upon any resolution submitted to any
        meeting of holders of Securities shall be written ballots on
        which shall be subscribed the signatures of the holders of
        Securities or of their representatives by proxy and the serial
        number or numbers of the Securities held or represented by them.
        The permanent chairperson of the meeting shall appoint two
        inspectors of votes who shall count all votes cast at the meeting
        for or against any resolution and who shall make and file with
        the secretary of the meeting their verified written reports in
        triplicate of all votes cast at the meeting.  A record, at least
        in triplicate, of the proceedings of each meeting of holders of
        Securities shall be prepared by the secretary of the meeting and
        there shall be attached to said record the original reports of
        the inspectors of votes on any vote by ballot taken thereat and
        affidavits by one or more persons having knowledge of the facts
        setting forth a copy of the notice of the meeting and showing
        that said notice was published as provided in the Fiscal Agency
        Agreement. Each copy shall be signed and verified by the

                                      A-32PAGE
<PAGE>
        affidavits of the permanent chairperson and secretary of the
        meeting, and one of such copy shall be delivered to the Company,
        another to the Guarantor and another to the Fiscal Agent to be
        preserved by the Fiscal Agent, the copy delivered to the Fiscal
        Agent to have attached thereto by ballots voted at the meeting.
        Any record so signed and verified shall be conclusive evidence of
        the matters therein stated.

             11.  Business Days.  Notwithstanding anything herein or in
        the Fiscal Agency Agreement to the contrary, if any payment of
        principal (or Additional Amounts, if any) is due on a day that
        is not a Business Day, payment shall be made on the next
        succeeding Business Day, with the same effect as if made on the
        day such payment was due.  A "Business Day" is defined, with
        respect to any act to be performed pursuant hereto or to the
        Fiscal Agency Agreement, as any day which is not a Saturday,
        Sunday or a day on which banking institutions in the place where
        such act is to occur are authorized or obligated by applicable
        law, regulation or executive order to close.

             12.  Fiscal and Paying Agent.

                  (a)  In acting under the Fiscal Agency Agreement and in
        connection with the Securities, the Fiscal Agent is acting
        solely as agent of the Company and the Guarantor and does not
        assume any obligation, or relationship of agency or trust, for
        or with the owner or holder of this Security, except that funds
        held by the Fiscal Agent for payment on this Security shall be
        held in trust by it and applied as set forth herein, but need
        not be segregated from other funds held by it, except as
        required by law.  For a description of the duties and the
        immunities and rights of the Fiscal Agent under the Fiscal
        Agency Agreement, reference is made to the Fiscal Agency
        Agreement, and the obligations of the Fiscal Agent to the holder
        hereof are subject to such immunities and rights.

                  (b)  Any monies paid by the Company to any paying
        agency for payment of principal of any Security (including
        Additional Amounts, if any, in respect thereof) and remaining
        unclaimed for two years after such payment has been made shall be
        repaid to the Company and to the extent permitted by law the
        holder of any Security shall thereafter look only to the Company
        or the Guarantor for any payment thereof as a general unsecured
        obligation thereof and all liability of the Fiscal Agent with
        respect thereto shall cease.

                  (c)  No reference herein to the Fiscal Agency Agreement
        and no provision of this Security or of the Fiscal Agency
        Agreement shall alter or impair the obligation of the Company,
        which is absolute and unconditional, to pay the principal of (and
        Additional Amounts, as described above) on this Security at the
        times, places and rate, and in the coin or currency, herein
        prescribed or to convert or redeem (at the request of a holder)
        this Security as provided herein or in the Fiscal Agency

                                      A-33PAGE
<PAGE>

        Agreement.

                  Title to Bearer Securities and coupons shall pass by
        delivery. As provided in the Fiscal Agency Agreement and subject
        to certain limitations therein set forth, the transfer of
        Registered Securities is registrable on the Security Register
        upon surrender of a Registered Security for registration of
        transfer at the office or agency of the Company in the City of
        New York,  duly endorsed by, or accompanied by a written
        instrument of transfer in form satisfactory to the Company and
        the Security Registrar duly executed by, the holder thereof or
        his attorney duly authorized in writing, and thereupon one or
        more new Registered Securities, of authorized denominations and
        for the same aggregate principal amount, having endorsed thereon
        a Guarantee executed by the Guarantor, will be issued to the
        designated transferee or transferees.

             13.  Notices.  All notices to the holders of Securities will
        be published on a Business Day in an Authorized Newspaper (as
        defined in the Fiscal Agency Agreement) in New York City and in
        London, and, if the Securities are listed on the Luxembourg
        Stock Exchange and so long as listed thereon , in Luxembourg or,
        if either publication in London or Luxembourg is not practical,
        in an Authorized Newspaper in any country in Western Europe.  It
        is expected that publication in New York City will be made in
        The Wall Street Journal (Eastern edition), in London in the
        Financial Times and in Luxembourg in the Luxemburger Wort. 
        Notices shall be deemed to have been given on the date of
        publication as aforesaid or, if published on different dates, on
        the date of the first such publication.  A copy of each such
        notice will be mailed by the Fiscal Agent, on behalf of and at
        the expense of the Company, by first-class mail to each holder
        of a Registered Security at the registered address of such
        holder as the same shall appear in the Security Register (as
        defined in the Fiscal Agency Agreement) on the day fifteen days
        prior to such mailing.

             14.  Governing Law.

                  (a)  THE FISCAL AGENCY AGREEMENT, THE SECURITIES AND
        THE GUARANTEES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
        WITH THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS,  UNITED
        STATES OF AMERICA WITHOUT GIVING EFFECT TO ITS CONFLICTS OF LAWS
        RULES.

                  (b)  The Company and the Guarantor have appointed the
        Fiscal Agent as its agent upon whom process may be served in any
        suit, action or proceeding initially at its office located at 450
        West 33rd Street, 15th Floor, New York, New York 10001, with a
        copy to the Company at 81 Wyman Street, Waltham, MA 02254-9046,
        Attention: President and with a copy to the Guarantor at 81
        Wyman Street, Waltham, Massachusetts 02254-9046, Attention:
        General Counsel.

                                      A-34PAGE
<PAGE>
             15.  Authentication.  This Security shall not become valid
        or obligatory for any purpose until the certificate or
        authentication hereon shall have been duly signed by the Fiscal
        Agent acting under the Fiscal Agency Agreement.

             16.  Warranty of the Issuer.  Subject to Section 15 hereof,
        the Company hereby certifies and warrants that all acts,
        conditions and things required to be done and performed and to
        have happened precedent to the creation and issuance of this
        Security, and to constitute the same legal, valid and binding
        obligations of the Company enforceable in accordance with their
        terms, have been done and performed and have happened in due and
        strict compliance with all applicable laws.

             17.  Accounting Terms.  All accounting terms not otherwise
        defined herein shall have the meanings assigned to them in
        accordance with generally accepted accounting principles as
        applied in the United States.

             18.  Descriptive Headings.  The descriptive headings
        appearing in these Terms and Conditions are for convenience of
        reference only and shall not alter, limit or define the
        provisions hereof.

















                                      A-35PAGE
<PAGE>
                    GUARANTEE OF THERMO ELECTRON CORPORATION

             1.   FOR VALUE RECEIVED, Thermo Electron Corporation, a
        corporation duly organized and existing under the laws of the
        State of Delaware (herein called the "Guarantor"), hereby
        unconditionally guarantees to the holder of the Security upon
        which this Guarantee is endorsed the due and punctual payment of
        the principal of and any Additional Amounts (payable in
        accordance with Section 2 of such Security) on such Security
        when and as the same shall become due and payable, whether at
        the stated maturity or by declaration of acceleration, call for
        redemption, redemption at the option of the holder thereof or
        otherwise, according to the terms of such Security and of the
        Fiscal Agency Agreement referred to in the Security upon which
        this Guarantee is endorsed.  In case of the failure of the
        Company referred to in the Security upon which this Guarantee is
        endorsed punctually to make any such payment of principal or
        such Additional Amounts, if any, the Guarantor hereby agrees to
        cause any such payment to be made punctually when and as the
        same shall become due and payable, whether at the stated
        maturity or by declaration of acceleration, call for redemption,
        redemption at the option of the holder thereof or otherwise, and
        as if such payment were made by the Company. 

             2.   The Guarantor hereby agrees that its obligations
        hereunder shall be unconditional, irrespective of the validity,
        regularity or enforceability of such Security or the Fiscal
        Agency Agreement, the absence of any action to enforce the same,
        any waiver or consent by the holder of such Security or by the
        Fiscal Agent with respect to any provisions thereof or of the
        Fiscal Agency Agreement, the recovery of any judgment against
        the Company or any action to enforce the same or any other
        circumstance which might otherwise constitute a legal or
        equitable discharge or defense of a guarantor.  The Guarantor
        hereby waives diligence, presentment, demand of payment, filing
        of claims with a court in the event of insolvency or bankruptcy
        of the Company, any right to require a proceeding first against
        the Company, protest or notice with respect to such Security or
        the indebtedness evidenced thereby and all demands whatsoever,
        and covenants that this Guarantee will not be discharged except
        by complete performance of the obligations contained in such
        Security and in this Guarantee.

             3.   (a)  The Guarantor will not merge or consolidate with,
        or sell or convey all or substantially all of its assets to, any
        other corporation, unless (i) either (A) the Guarantor shall be
        the surviving corporation in the case of a merger, (B) the
        assets sold or conveyed shall be owned by a corporation which,
        immediately following such sale or conveyance, is at least
        51%-owned by the Guarantor, provided that such sale or
        conveyance does not result in the reclassification, conversion,
        exchange or cancellation of outstanding shares of Common Stock
        of the Guarantor, or (C) (I) the surviving, resulting or
        transferee corporation shall expressly assume the due and

                                      A-36PAGE
<PAGE>
        punctual performance of all of the covenants and obligations of
        the Guarantor under the Guarantees and Fiscal Agency Agreement,
        by supplemental agreement reasonably satisfactory to the Fiscal
        Agent, and (II) the Fiscal Agent shall have received the
        documentation required in the context by the Fiscal Agency
        Agreement and (ii) the Guarantor or such successor corporation,
        as the case may be, shall not, immediately after such merger,
        consolidation, sale or conveyance, be in default in the
        performance of any covenants or obligations of the Guarantor
        under the Guarantees or the Fiscal Agency Agreement.

                  (b)  Upon any merger, consolidation, sale, conveyance
        or assumption as provided in Section 3(a), the successor or
        assuming corporation shall succeed to and be substituted for,
        and may exercise every right and power of and be subject to all
        the obligations of, the Guarantor under the Guarantees and
        Fiscal Agency Agreement, with the same effect as if such
        successor or assuming corporation had been named as the
        Guarantor therein and herein and the Guarantor shall be released
        from its obligations as obligor under the Guarantees and Fiscal
        Agency Agreement. 

             4.   (a)  The Guarantor, for itself, its successors and
        assigns, covenants and agrees, and each holder of Securities by
        his acceptance thereof, likewise covenants and agrees, that all
        obligations of the Guarantor relating to payment of the
        principal of and Additional Amounts (pursuant to Section 2 of
        the Securities) on each and all of the Securities is hereby
        expressly subordinated, to the extent and in the manner
        hereinafter set forth, in right of payment to the prior payment
        in full of all Senior Indebtedness of the Guarantor (as defined
        below).

             "Senior Indebtedness of the Guarantor" or "Senior
        Indebtedness" shall mean the principal of, premium, if any, and
        interest on and all other amounts due on or with respect to the
        following, whether outstanding at the date hereof or hereafter
        created or incurred:

                       (i)  indebtedness of the Guarantor for money
        borrowed by the Guarantor (excluding the Guarantees, but
        including purchase money obligations) whether or not evidenced by
        debentures, bonds, notes or other corporate debt securities or
        similar instruments issued by the Guarantor (including the
        Guarantor's obligations with respect to its 5% Senior Convertible
        Debentures due 2001 and its 4-5/8% Senior Convertible Debentures
        due 1997); provided, however, that Senior Indebtedness shall not
        include (a) the Guarantor's 4-7/8% Convertible Subordinated
        Debentures due 1997, the obligations represented by which shall
        rank pari passu with the obligations represented hereby in right
        of payment, (b) the Guarantor's subordinated guarantee of the
        principal, premium, if any, and interest on the 6-5/8%
        Convertible Subordinated Debentures due 2001 of Thermo
        Instrument Systems Inc., on the 6-1/2% Convertible Subordinated

                                      A-37PAGE
<PAGE>
        Debentures due 1997 of Thermo TerraTech Inc., on the
        Non-Interest Bearing Convertible Subordinated Debentures due
        1997 of Thermo Cardiosystems Inc., on the 3-3/4% Convertible
        Subordinated Debentures due 2000 of Thermo Voltek Corp., on the
        4-7/8% Convertible Subordinated Debentures due 2000 of Thermo
        Remediation Inc., on the 5% Convertible Subordinated Debentures
        due 2000 of ThermoQuest Corporation, and on the 5% Convertible
        Subordinated Debentures due 2000 of Thermo Optek Corporation,
        the obligations represented by which shall rank pari passu with
        the obligations represented hereby in right of payment and (c)
        the Guarantor's subordinated guarantee of the obligations to
        redeem the common stock of ThermoLyte Corporation, the
        obligations represented by which shall rank pari passu with the
        obligations represented hereby in right of payment;

                       (ii) obligations to reimburse any bank or other
        person in respect of amounts paid under letters of credit;

                       (iii)     leases for real property, equipment or
        other assets, which leases are capitalized in the Guarantor's
        consolidated financial statements in accordance with generally
        accepted accounting principles;

                       (iv) commitment, standby and other fees due and
        payable to financial institutions with respect to credit
        facilities available to the Guarantor;

                       (v)  obligations of the Guarantor under interest
        rate and currency swaps, floors, caps or other similar
        arrangements intended to fix or hedge interest rate obligations
        or currency exposure;

                       (vi) indebtedness secured by any mortgage, pledge,
        lien or other encumbrance on property which is owned or held by
        the Guarantor subject to such mortgage, pledge, lien or other
        encumbrance, whether or not the indebtedness secured thereby
        shall have been assumed by the Guarantor;

                       (vii)  obligations of the Guarantor constituting
        guarantees of indebtedness of or joint obligations with another
        or others which would be included in the preceding clauses (i),
        (ii), (iii), (iv), (v) or (vi) (including the Guarantor's
        guarantee of the principal, premium, if any, and interest on the
        3-3/4% Senior Convertible Debentures due 2000 of Thermo
        Instrument Systems Inc.); or

                       (viii)    modifications, renewals, extensions or
        refundings of any of the indebtedness, leases, fees or
        obligations referred to in the preceding clauses (i), (ii),
        (iii), (iv), (v), (vi) and (vii), or debentures, notes or other
        evidences of indebtedness issued in exchange therefor;

        provided that Senior Indebtedness shall not include any
        particular indebtedness, lease, fee, obligation, modification,

                                      A-38PAGE
<PAGE>
        renewal, extension, refunding or exchanged security if, under
        the express provisions of the instrument creating or evidencing
        the same, or pursuant to which the same is outstanding, such
        indebtedness, lease, fee or obligation or such modification,
        renewal, extension, refunding or exchanged security is stated to
        be not superior in right of payment to the Guarantees.

                  (b) (i)   In the event of any insolvency or bankruptcy
        proceedings, or any receivership, liquidation, reorganization or
        other similar proceedings in connection therewith, relative to
        the Guarantor or it its creditors, in their capacity as such
        creditors, or to its property, or in the event of any
        proceedings for voluntary liquidation, dissolution or other
        winding up of the Guarantor, whether or not involving insolvency
        or bankruptcy, or in the event of any assignment for the benefit
        of creditors of the Guarantor or any marshalling of assets of
        the Guarantor, then the holders of Senior Indebtedness of the
        Guarantor shall first be entitled to receive payment in full of
        the principal of (and premium, if any) and interest, including
        interest thereon accruing after the commencement of any such
        proceeding, and other amounts due on or with respect to, all
        Senior Indebtedness of the Guarantor before the holders of any
        of the Securities shall be entitled to receive any payment on
        account of the obligations of the Guarantor relating to the
        principal of and Additional Amounts (pursuant to Section 2 of
        the Securities) on the Securities, and to that end the holders
        of Senior Indebtedness of the Guarantor shall be entitled to
        receive for application in payment thereof any payment or
        distribution of any kind or character, whether in cash, property
        or securities, which may be payable or deliverable in any such
        proceedings in respect of the obligations of the Guarantor
        relating to the Securities, other than securities of the
        Guarantor as reorganized or readjusted or securities of the
        Guarantor or any other corporation provided for by a plan of
        reorganization or readjustment the payment of which is
        subordinate, at least to the extent provided in this Section 4
        with respect to the obligations of the Guarantor relating to the
        Securities, to the payment of all Senior Indebtedness of the
        Guarantor, provided that the rights of the holders of Senior
        Indebtedness of the Guarantor are not altered by such
        reorganization or readjustment.  For the purposes of this
        Section 4, no consolidation, merger, conveyance or transfer made
        pursuant to the provisions of Section 3 shall be deemed to be a
        liquidation, reorganization, dissolution or other winding up of
        the Guarantor.

                       (ii) If under the circumstances set forth in
        paragraph (i) of this subsection, and notwithstanding the
        provisions thereof, any payment or distribution of assets of the
        Guarantor of any kind, whether in cash, property, or securities
        (other than securities of the Guarantor as reorganized or
        readjusted or securities of the Guarantor or any other
        corporation provided for by a plan of reorganization or
        readjustment the payment of which is subordinated, at least to

                                      A-39PAGE
<PAGE>
        the extent provided in this Section 4 with respect to the
        obligations of the Guarantor relating to the Securities to the
        payment of all Senior Indebtedness of the Guarantor, provided
        that the rights of the holders of Senior Indebtedness of the
        Guarantor are not altered by such reorganization or
        readjustment), shall be received by the holders of the Securities
        in respect of the obligations of the Guarantor before all Senior
        Indebtedness of the Guarantor is paid in full, such payment or
        distribution shall be paid over to the holders of Senior
        Indebtedness of the Guarantor, ratably, for application to the
        payment of all Senior Indebtedness of the Guarantor remaining
        unpaid until all Senior Indebtedness of the Guarantor shall have
        been paid in full, after giving effect to any concurrent payment
        or distribution to the holders of such Senior Indebtedness of the
        Guarantor.

                       (iii)     Upon any distribution of assets of the
        Guarantor referred to in this Section, the holders of Securities
        shall be entitled to rely upon any final order or decree of a
        court of competent jurisdiction in which such dissolution,
        winding up, liquidation or reorganization proceedings are
        pending, and the holders of Securities shall be entitled to rely
        upon a certificate of the liquidating trustee or agent or other
        person making any distribution to the holders of Securities for
        the purpose of ascertaining the persons entitled to participate
        in such distribution, the holders of Senior Indebtedness of the
        Guarantor and other indebtedness of the Guarantor, the amount
        thereof or payable thereon, the amount or amounts paid or
        distributed thereon and all other facts pertinent thereto or to
        this Section.

                  (c) (i)   Upon the maturity of any Senior Indebtedness
        of the Guarantor by lapse of time, acceleration or otherwise, all
        principal thereof (and premium, if any) and interest due
        thereon, including interest thereon accruing after the
        commencement of any proceeding of the type referred to in
        paragraph (i) of Section 4(b) above, and all other amounts due
        on or with respect thereto, shall first be paid in full, or such
        payment duly provided for in cash, before any payment, directly
        or indirectly, is made on account of the obligations of the
        Guarantor relating to the principal of and Additional Amounts
        (pursuant to Section 2 of the Securities) on the Securities.

                       (ii) Upon the happening of an event of default
        with respect to any Senior Indebtedness of the Guarantor, as
        defined therein or in the instrument under which it is
        outstanding, permitting the holders to accelerate the maturity
        thereof, then, unless and until such event of default shall have
        been cured or waived or shall have ceased to exist, no payment
        shall be made by the Guarantor, directly or indirectly, on
        account of the obligations of the Guarantor relating to the
        principal of and Additional Amounts (pursuant to Section 2 of the
        Securities) on the Securities. 


                                      A-40PAGE
<PAGE>
                  (d)  In case cash, securities or other property
        otherwise payable or deliverable to the holders of the Securities
        on account of the Guarantees shall have been applied, pursuant to
        Section 4(b) or (c), to the payment of Senior Indebtedness of
        the Guarantor, then, upon the payment in full of all Senior
        Indebtedness of the Guarantor, the holders of the Securities and
        coupons shall be subrogated to any rights of any holders of
        Senior Indebtedness of the Guarantor, to receive any further
        payments or distributions applicable to Senior Indebtedness of
        the Guarantor until the obligations of the Guarantor in respect
        of the Guarantees shall have been discharged in full, and such
        payments or distributions received by the holders of the
        Securities, by reason of such subrogation, of cash, securities
        or other property which otherwise would be paid or distributed
        to the holders of Senior Indebtedness of the Guarantor, shall,
        as between the Guarantor and its creditors other than the
        holders of Senior Indebtedness of the Guarantor, on the one
        hand, and the holders of the Securities on account of the
        Guarantees, on the other hand, be deemed to be a payment by the
        Guarantor on account of Senior Indebtedness of the Guarantor and
        not on account of the Securities. 

                  (e)  No present or future holder of any Senior
        Indebtedness of the Guarantor shall be prejudiced in any way in
        the right to enforce the subordination of the Guarantees by any
        act or failure to act on the part of the Guarantor.  The
        provisions of this Section 4 are solely for the purpose of
        defining the relative rights of the holders of Senior
        Indebtedness of the Guarantor, on the one hand, and the holders
        of the Securities on account of the Guarantees, on the other
        hand, against the Guarantor and its assets, and nothing contained
        in this Section 4 shall impair, as between the Guarantor and the
        holder of any Security, the obligation of the Guarantor, which is
        unconditional and absolute, to perform in accordance with the
        terms of its Guarantees, or prevent the holder of any Security,
        upon default hereunder or under such Security , from exercising
        all rights, powers and remedies otherwise provided herein or
        therein or by applicable law, all subject to the rights of the
        holders of Senior Indebtedness of the Guarantor under this
        Section 4 to receive cash, property or securities otherwise
        payable or deliverable to the holders of the Securities on
        account of the Guarantees.

                  (f)  Nothing contained in this Section 4 or in any
        Guarantees shall prevent at any time, except under the conditions
        described in Sections 4(b) and (c) hereof or during the pendency
        of any dissolution, winding up, liquidation or reorganization
        proceedings therein referred to, the Guarantor from performing
        its obligations under the Guarantees.



             5.   The Guarantor shall be subrogated to all rights of the
        holders of the Securities against the Company in respect of any

                                      A-41PAGE
<PAGE>
        amounts paid by the Guarantor pursuant to the provisions of this
        Guarantee; provided, however, that the Guarantor shall not be
        entitled to enforce or to receive any payments arising out of,
        or based upon, such right of subrogation until the principal of
        and Additional Amounts (pursuant to Section 2 of the Securities,
        if any, on) all of the Securities shall have been paid in full. 

             6.   THIS GUARANTEE SHALL BE GOVERNED BY AND CONSTRUED IN
        ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS,
        UNITED STATES OF AMERICA WITHOUT GIVING EFFECT TO ITS CONFLICTS
        OF LAWS RULES. 

             7.   All terms used in this Guarantee which are defined in
        the Fiscal Agency Agreement shall have the meanings assigned to
        them in the Fiscal Agency Agreement. 

             8.   Subject to the next following paragraph, the Guarantor
        hereby certifies and warrants that all acts, conditions and
        things required to be done and performed and to have happened
        precedent to the creation and issuance of this Guarantee and to
        constitute the same a legal, valid and binding obligations of
        the Guarantor enforceable in accordance with their terms, have
        been done and performed and have happened in due and strict
        compliance with all applicable laws. 

             9.   This Guarantee shall not become valid or obligatory for
        any purpose until the certificate of authentication on the
        Security upon which this Guarantee is endorsed shall have been
        duly signed by the Fiscal Agent acting under the Fiscal Agency
        Agreement.

















                                      A-42PAGE
<PAGE>
             IN WITNESS WHEREOF, the Guarantor has caused this Guarantee
        to be duly executed in its corporate name by the manual or
        facsimile signature of a duly authorized officer. 


        Dated:  March 14, 1996



                                      THERMO ELECTRON CORPORATION


                                      By: _______________________

                                      Name: _____________________

                                      Title: ____________________



        Attest:


        _________________________



















                                      A-43PAGE
<PAGE>
                                 TRANSFER NOTICE



        Only if a Registered Security is transferred:



        FOR VALUE RECEIVED, the undersigned Holder hereby sell(s),
        assign(s) and transfer(s) unto __________________________________
        _________________________________________________________________
        _______________________________________ whose taxpayer
        identification number is __________________ and whose address
        including postal/zip code is ____________________________________
        the within Security and all rights thereunder, hereby irrevocably
        constituting and appointing _____________________________________
        attorney-in-fact to transfer said Security on the books of the
        Fiscal Agent with full power of substitution in the premises.

        In connection with the transfer of this Security, the
        undersigned Holder certifies that the transfer is being made
        pursuant to an exemption from, or in a transaction not subject
        to, the registration requirements of the Securities Act of 1933
        and, in connection with which transfer the Company has received,
        if requested, an opinion of counsel (satisfactory to it in form
        and substance) to the effect that the transfer is being made
        pursuant to an exemption from, or in a transaction not subject
        to, the registration requirements of the Securities Act of 1933.



        Dated: ______________         Name: ____________________

                                      By: ______________________

                                      Title: ___________________



                            NOTICE: The signature of the Holder to this
                            assignment must correspond with the name as
                            written upon the face of the within
                            instrument in every particular, without
                            enlargement or any change whatsoever.


                            SIGNATURE GUARANTEED


                            _________________________


                                      A-44PAGE
<PAGE>
                                CONVERSION NOTICE



        If Bearer Security of denomination U.S. $1,000:



             The undersigned holder of this Security hereby (i)
        irrevocably exercises the option to convert this Security into
        shares of Common Stock of Thermo Ecotek Corporation (the
        "Company") in accordance with the terms of this Security, and
        (ii) directs that such shares be registered in the name of and
        delivered, together with a check in payment for any fractional
        share, to the undersigned unless a different name has been
        indicated below.  If shares are to be registered in the name of a
        person other than the undersigned, the undersigned will pay all
        transfer taxes payable with respect thereto.


        Dated: __________________


        _________________________
        Signature 

        [MUST BE GUARANTEED IF STOCK IS TO BE ISSUED 
        IN A NAME OTHER THAN THE REGISTERED 
        HOLDER OF THE SECURITY]


        If shares are to be registered in the 
        name of and delivered to a person 
        other than the holder, please print 
        such person's name and address and, 
        if this is a Restricted Security, 
        complete the Transfer Notice:

        __________________________
        __________________________
        __________________________

        HOLDER

        Please print name and address of holder:

        __________________________
        __________________________
        __________________________ 



                                      A-45PAGE
<PAGE>

                                CONVERSION NOTICE

        If (i) Registered Security or (ii) Bearer Security of
        denomination U.S. $10,000:

             The undersigned holder of this Security hereby irrevocably
        exercises the option to convert this Security, or portion hereof
        (which is U.S. $1,000 or an integral multiple thereof) below
        designated, into shares of Common Stock of Thermo Ecotek
        Corporation (the "Company") in accordance with the terms of this
        Security, and (ii) directs that such shares, together with a
        check in payment for any fractional share and any Securities
        representing any unconverted principal amount hereof, be
        delivered to and be registered (if a Registered Security) in the
        name of the undersigned unless a different name has been
        indicated below.  If shares or Securities are to be registered
        in the name of a person other than the undersigned, the
        undersigned will pay all transfer taxes payable with respect
        thereto.


        ________________________
        Signature

        [MUST BE GUARANTEED IF STOCK IS TO  
        BE ISSUED IN A NAME OTHER THAN 
        THE REGISTERED HOLDER OF THE SECURITY]

        Dated: ___________________




        If shares or Securities are to be registered in 
        the name of a Person other than the 
        registered holder, please print such person's 
        name and address and, if this is a Restricted 
        Security, complete Transfer Notice:

        ________________________ 
        ________________________ 
        ________________________

        HOLDER  

        Please print name and address of holder: 

        _________________________________
        _________________________________
        _________________________________

                                      A-46PAGE
<PAGE>
        If only a portion of the Securities is to 
        be converted, please indicate:


        1.   Principal Amount to be converted: 
             U.S.$ ________


        2.   Kind, amount and denomination of 
             Securities representing unconverted 
             principal amount to be issued:

        Bearer U.S. $_____________
        (U.S. $1,000 or $10,000)


        Registered U.S. $___________ 
        Denominations:  U.S. $__________ 
        (U.S. $1,000 or an integral multiple thereof)


        Registered Securities are not exchangeable 
        for Bearer Securities.















                                      A-47PAGE
<PAGE>
                     REDEMPTION NOTICE UNDER SECTION 3(d)


        If Bearer Security of denomination U.S. $ 1,000:

             The undersigned holder of this Security hereby requests and
        instructs the Company to redeem this Security in accordance with
        the terms of Section 3(d) of this Security and directs that a
        check in payment of the redemption amount be delivered to the
        undersigned unless a different name has been indicated below. 
        The undersigned understands that this request can be revoked by
        delivering written notice to the Paying Agent on or before the
        Holder Redemption Date, together with the undersigned's
        non-transferable receipt for such Security.


        Dated: _______________________


        _____________________________________ 
        Signature 

        [MUST BE GUARANTEED IF CHECK IS TO 
        BE MADE PAYABLE TO A NAME OTHER 
        THAN THE REGISTERED HOLDER OF THE SECURITY]

        If a check in payment of the 
        redemption amount is to be delivered 
        to a person other than the holder, 
        please print such person's name and 
        address:

        _________________________________
        _________________________________
        _________________________________



        HOLDER

        Please print name and address of holder:

        _________________________________
        _________________________________
        _________________________________


                                      A-48PAGE
<PAGE>
                      REDEMPTION NOTICE UNDER SECTION 3(d)



        If (i) Registered Security or (ii) Bearer Security of
        denomination U.S. $10,000:

             The undersigned holder of this Security hereby requests and
        instructs the Company to redeem this Security or portion hereof
        (which is U.S. $1,000 or an integral multiple thereof) in
        accordance with the terms of Section 3(d) of this Security, and
        directs that a check in payment of the redemption amount be
        delivered to, and any Securities representing any unredeemed
        principal amount hereof be delivered to and be registered in the
        name of, the undersigned unless a different name has been
        indicated below.  If Securities are to be registered in the name
        of a person other than the undersigned, the undersigned will pay
        all transfer taxes payable with respect thereto.  The
        undersigned understands that this request can be revoked by
        delivering written notice to the Paying Agent on or before the
        Holder Redemption Date, together with the undersigned's
        non-transferable receipt for such Security.


        Dated:

                        
                                      ___________________________
                                      Signature
                                      [MUST BE GUARANTEED IF CHECK IS TO
                                      BE MADE PAYABLE TO A NAME OTHER
                                      THAN THE REGISTERED HOLDER OF THE
                                      SECURITY]

        If Securities are to be 
        registered in the name of,                   HOLDER 
        or a check in payment of the  Please print name and address of
        redemption amount is to be    holder:
        delivered to, a person other 
        than the holder, please 
        print such person's name           ________________________
        and address, and if this is 
        a Restricted Security and any      ________________________
        Securities representing any 
        unredeemed principal amount        ________________________
        hereof are to be registered 
        in the name of a person other 
        than the undersigned, 
        complete Transfer Notice.

        _____________________________
        _____________________________
        _____________________________ 

                                      A-49PAGE
<PAGE>

                            1.   Principal Amount to redeemed: U.S. $

                            2.   Kind, amount and denomination of 
                                 Securities representing unredeemed 
                                 principal amount to be issued:

                                      Bearer U.S. $_____________ 
                                      Denominations:  U.S. $_________ 
                                      (U.S. $1,000 or $10,000)

                                      Registered U.S. $___________ 
                                      Denominations: U.S. $__________ 
                                      (U.S. $1,000 or an integral 
                                         multiple thereof)

                                      Registered Securities are not
                                        exchangeable for Bearer 
                                        Securities.























                                      A-50PAGE
<PAGE>
                                                                EXHIBIT B



                     (FORM OF REGULATION S GLOBAL SECURITY)



             THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE UNITED
        STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
        OR ANY STATE SECURITIES LAWS.  NEITHER THIS SECURITY NOR ANY
        INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD OR
        OTHERWISE TRANSFERRED, DIRECTLY OR INDIRECTLY, IN THE UNITED
        STATES OF AMERICA, ITS TERRITORIES, ITS POSSESSION AND OTHER
        AREAS SUBJECT TO ITS JURISDICTION (THE "UNITED STATES" ) OR TO
        ANY CITIZEN, NATIONAL RESIDENT OF THE UNITED STATES OR TO ANY
        CORPORATION, PARTNERSHIP OR OTHER ENTITY CREATED OR ORGANIZED IN
        OR UNDER THE LAWS OF THE UNITED STATES OR ANY POLITICAL
        SUBDIVISION THEREOF, OR TO ANY ESTATE OR TRUST THE INCOME OF
        WHICH IS SUBJECT TO UNITED STATES FEDERAL INCOME TAXATION
        REGARDLESS OF ITS SOURCE OR TO ANY OTHER PERSON OR ENTITY DEEMED
        A U.S. PERSON UNDER REGULATIONS UNDER THE SECURITIES ACT
        ("UNITED STATES PERSON").

             ANY UNITED STATES PERSON WHO HOLDS THIS SECURITY WILL BE
        SUBJECT TO LIMITATIONS UNDER THE UNITED STATES INCOME TAX LAWS,
        INCLUDING THE LIMITATIONS PROVIDED IN SECTION 165(j) AND 1287(a)
        OF THE UNITED STATES INTERNAL REVENUE CODE.

             THIS SECURITY IS A TEMPORARY GLOBAL SECURITY, WITHOUT
        CONVERSION RIGHTS, EXCHANGEABLE FOR DEFINITIVE BEARER SECURITIES
        OR REGISTERED SECURITIES.  THE RIGHTS ATTACHING TO THIS GLOBAL
        SECURITY, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS
        EXCHANGE FOR DEFINITIVE SECURITIES, ARE AS SPECIFIED IN THE
        FISCAL AGENCY AGREEMENT (AS DEFINED HEREIN).












                                       B-1PAGE
<PAGE>

                            THERMO ECOTEK CORPORATION
                     (Incorporated in the State of Delaware)


        Non-Interest Bearing Convertible Subordinated Debenture Due 2001

                      Guaranteed on a Subordinated Basis By

                           THERMO ELECTRON CORPORATION
                     (Incorporated in the State of Delaware)

                           TEMPORARY GLOBAL DEBENTURE



             THERMO ECOTEK CORPORATION, a corporation duly incorporated
        and existing under the laws of the State of Delaware (the
        "Company"), for value received, hereby promises to pay to bearer
        upon presentation and surrender of this Global Security the
        principal sum of $_______ United States Dollars on March 15,
        2001.

             This Global Security is one of a duly authorized issue of
        Securities of the Company designated as specified in the title
        hereof, issued and to be issued under the Fiscal Agency
        Agreement dated as of March 14, 1996 (the "Fiscal Agency
        Agreement") among the Company, Thermo Electron Corporation, a
        corporation duly incorporated and existing under the laws of the
        State of Delaware, as guarantor and Chemical Bank, as fiscal
        agent (the "Fiscal Agent", which term includes any successor
        fiscal agent under the Fiscal Agency Agreement).  This Global
        Security is a temporary security and is exchangeable in whole or
        from time to time in part without charge upon request of the
        holder hereof for definitive Securities in bearer form or in
        registered form, of authorized denominations, (a) not earlier
        than the day following expiration of the 40-day period that
        begins on the date hereof and (b) as promptly as practicable
        following presentation of certification, in the forms set forth
        as Exhibits C and F of the Fiscal Agency Agreement for such
        purpose, that the beneficial owner or owners of this Global
        Security (or, if such exchange is only for a part of this Global
        Security, of such part) are not United States Persons or other
        persons who have purchased such Debenture for resale to United
        States Persons.  Definitive Securities in bearer form to be
        delivered in exchange for any part of this Global Security shall
        be delivered only outside of the United States, its territories
        and its possessions.  Upon any exchange of a part of this Global
        Security for definitive Securities, the portion of the principal
        amount hereof so exchanged shall be endorsed by the Fiscal Agent
        or its agents on the Schedule of Exchanges hereto, and the
        principal amount hereof shall be reduced for all purposes by the

                                       B-2PAGE
<PAGE>
        amount so exchanged.

             Until exchanged in full for definitive Securities, this
        Global Security shall in all respects be entitled to the same
        benefits under, and subject to the same terms and conditions of,
        the Fiscal Agency Agreement as definitive Securities
        authenticated and delivered thereunder, except that neither the
        holder hereof nor the beneficial owners of this Global Security
        shall be entitled to convert this Global Security into shares of
        Common Stock of the Company or any other security, cash or other
        property.

             THIS GLOBAL SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN
        ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS,
        UNITED STATES OF AMERICA, WITHOUT GIVING EFFECT TO ITS CONFLICTS
        OF LAW RULES.

             All terms used in this Global Security which are defined in
        the Fiscal Agency Agreement shall have the meanings assigned to
        them in the Fiscal Agency Agreement.

             Unless the certificate of authentication hereon has been
        manually executed by an authorized signatory of the Fiscal
        Agent, this Global Security shall not be entitled to any benefit
        under the Fiscal Agency Agreement or valid or obligatory for any
        purpose.

             IN WITNESS WHEREOF, the Company has caused this Global
        Security to be duly executed in its corporate name by its duly
        authorized signatory under its corporate seal.

        Dated: March 14, 1996


                                      THERMO ECOTEK CORPORATION

                                      By: _____________________

                                      Name: ___________________

                                      Title: __________________


        Attest:


        _________________________



                                       B-3PAGE
<PAGE>
                          CERTIFICATE OF AUTHENTICATION

             This is one of the Securities described in the within-
        mentioned Fiscal Agency Agreement.



                                      CHEMICAL BANK
                                           as Fiscal Agent

                                           By: _____________________
                                               Authorized Officer

                              SCHEDULE OF EXCHANGES



                  Principal           Remaining
                  amount              principal           Notation
                  exchanged for       amount              made on
        Date      definitive          following           behalf of the
        made      Securities          such exchange       Fiscal Agent

        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________
        ______    ___________         __________          ______________



        _________________________________________________________________



                                       B-4PAGE
<PAGE>
                    GUARANTEE OF THERMO ELECTRON CORPORATION



             1.   FOR VALUE RECEIVED, Thermo Electron Corporation, a
        corporation duly organized and existing under the laws of the
        State of Delaware (herein called the "Guarantor"), hereby
        unconditionally guarantees to the holder of the Security upon
        which this Guarantee is endorsed the due and punctual payment of
        the principal of and any Additional Amounts (payable in
        accordance with Section 2 of such Security) on such Security
        when and as the same shall become due and payable, whether at
        the stated maturity or by declaration of acceleration, call for
        redemption, redemption at the option of the holder thereof or
        otherwise, according to the terms of such Security and of the
        Fiscal Agency Agreement referred to in the Security upon which
        this Guarantee is endorsed.  In case of the failure of the
        Company referred to in the Security upon which this Guarantee is
        endorsed punctually to make any such payment of principal or
        such Additional Amounts, if any, the Guarantor hereby agrees to
        cause any such payment to be made punctually when and as the
        same shall become due and payable, whether at the stated
        maturity or by declaration of acceleration, call for redemption,
        redemption at the option of the holder thereof or otherwise, and
        as if such payment were made by the Company. 

             2.   The Guarantor hereby agrees that its obligations
        hereunder shall be unconditional, irrespective of the validity,
        regularity or enforceability of such Security or the Fiscal
        Agency Agreement, the absence of any action to enforce the same,
        any waiver or consent by the holder of such Security or by the
        Fiscal Agent with respect to any provisions thereof or of the
        Fiscal Agency Agreement, the recovery of any judgment against
        the Company or any action to enforce the same or any other
        circumstance which might otherwise constitute a legal or
        equitable discharge or defense of a guarantor.  The Guarantor
        hereby waives diligence, presentment, demand of payment, filing
        of claims with a court in the event of insolvency or bankruptcy
        of the Company, any right to require a proceeding first against
        the Company, protest or notice with respect to such Security or
        the indebtedness evidenced thereby and all demands whatsoever,
        and covenants that this Guarantee will not be discharged except
        by complete performance of the obligations contained in such
        Security and in this Guarantee.

             3.   (a)  The Guarantor will not merge or consolidate with,
        or sell or convey all or substantially all of its assets to, any
        other corporation, unless (i) either (A) the Guarantor shall be
        the surviving corporation in the case of a merger, (B) the
        assets sold or conveyed shall be owned by a corporation which,
        immediately following such sale or conveyance, is at least
        51%-owned by the Guarantor, provided that such sale or

                                       B-5PAGE
<PAGE>
        conveyance does not result in the reclassification, conversion,
        exchange or cancellation of outstanding shares of Common Stock
        of the Guarantor, or (C) (I) the surviving, resulting or
        transferee corporation shall expressly assume the due and
        punctual performance of all of the covenants and obligations of
        the Guarantor under the Guarantees and Fiscal Agency Agreement,
        by supplemental agreement reasonably satisfactory to the Fiscal
        Agent, and (II) the Fiscal Agent shall have received the
        documentation required in the context by the Fiscal Agency
        Agreement and (ii) the Guarantor or such successor corporation,
        as the case may be, shall not, immediately after such merger,
        consolidation, sale or conveyance, be in default in the
        performance of any covenants or obligations of the Guarantor
        under the Guarantees or the Fiscal Agency Agreement.

                  (b)  Upon any merger, consolidation, sale, conveyance
        or assumption as provided in Section 3(a), the successor or
        assuming corporation shall succeed to and be substituted for,
        and may exercise every right and power of and be subject to all
        the obligations of, the Guarantor under the Guarantees and
        Fiscal Agency Agreement, with the same effect as if such
        successor or assuming corporation had been named as the
        Guarantor therein and herein and the Guarantor shall be released
        from its obligations as obligor under the Guarantees and Fiscal
        Agency Agreement. 

             4.   (a)  The Guarantor, for itself, its successors and
        assigns, covenants and agrees, and each holder of Securities by
        his acceptance thereof, likewise covenants and agrees, that all
        obligations of the Guarantor relating to payment of the
        principal of and Additional Amounts (pursuant to Section 2 of
        the Securities) on each and all of the Securities is hereby
        expressly subordinated, to the extent and in the manner
        hereinafter set forth, in right of payment to the prior payment
        in full of all Senior Indebtedness of the Guarantor (as defined
        below).

             "Senior Indebtedness of the Guarantor" or "Senior
        Indebtedness" shall mean the principal of, premium, if any, and
        interest on and all other amounts due on or with respect to the
        following, whether outstanding at the date hereof or hereafter
        created or incurred:

                       (i)  indebtedness of the Guarantor for money
        borrowed by the Guarantor (excluding the Guarantees, but
        including purchase money obligations) whether or not evidenced by
        debentures, bonds, notes or other corporate debt securities or
        similar instruments issued by the Guarantor (including the
        Guarantor's obligations with respect to its 5% Senior Convertible
        Debentures due 2001 and its 4-5/8% Senior Convertible Debentures
        due 1997); provided, however, that Senior Indebtedness shall not
        include (a) the Guarantor's 4-7/8% Convertible Subordinated
        Debentures due 1997, the obligations represented by which shall


                                       B-6PAGE
<PAGE>
        rank pari passu with the obligations represented hereby in right
        of payment, (b) the Guarantor's subordinated guarantee of the
        principal, premium, if any, and interest on the 6-5/8%
        Convertible Subordinated Debentures due 2001 of Thermo
        Instrument Systems Inc., on the 6-1/2% Convertible Subordinated
        Debentures due 1997 of Thermo TerraTech Inc., on the
        Non-Interest Bearing Convertible Subordinated Debentures due
        1997 of Thermo Cardiosystems Inc., on the 3-3/4% Convertible
        Subordinated Debentures due 2000 of Thermo Voltek Corp., on the
        4-7/8% Convertible Subordinated Debentures due 2000 of Thermo
        Remediation Inc., on the 5% Convertible Subordinated Debentures
        due 2000 of ThermoQuest Corporation, and on the 5% Convertible
        Subordinated Debentures due 2000 of Thermo Optek Corporation,
        the obligations represented by which shall rank pari passu with
        the obligations represented hereby in right of payment and (c)
        the Guarantor's subordinated guarantee of the obligations to
        redeem the common stock of ThermoLyte Corporation, the
        obligations represented by which shall rank pari passu with the
        obligations represented hereby in right of payment;

                       (ii) obligations to reimburse any bank or other
        person in respect of amounts paid under letters of credit;

                       (iii)     leases for real property, equipment or
        other assets, which leases are capitalized in the Guarantor's
        consolidated financial statements in accordance with generally
        accepted accounting principles;

                       (iv) commitment, standby and other fees due and
        payable to financial institutions with respect to credit
        facilities available to the Guarantor;

                       (v)  obligations of the Guarantor under interest
        rate and currency swaps, floors, caps or other similar
        arrangements intended to fix or hedge interest rate obligations
        or currency exposure;

                       (vi) indebtedness secured by any mortgage, pledge,
        lien or other encumbrance on property which is owned or held by
        the Guarantor subject to such mortgage, pledge, lien or other
        encumbrance, whether or not the indebtedness secured thereby
        shall have been assumed by the Guarantor;

                       (vii)  obligations of the Guarantor constituting
        guarantees of indebtedness of or joint obligations with another
        or others which would be included in the preceding clauses (i),
        (ii), (iii), (iv), (v) or (vi) (including the Guarantor's
        guarantee of the principal, premium, if any, and interest on the
        3-3/4% Senior Convertible Debentures due 2000 of Thermo
        Instrument Systems Inc.); or

                       (viii)  modifications, renewals, extensions or
        refundings of any of the indebtedness, leases, fees or
        obligations referred to in the preceding clauses (i), (ii),

                                       B-7PAGE
<PAGE>
        (iii), (iv), (v), (vi) and (vii), or debentures, notes or other
        evidences of indebtedness issued in exchange therefor;

        provided that Senior Indebtedness shall not include any
        particular indebtedness, lease, fee, obligation, modification,
        renewal, extension, refunding or exchanged security if, under
        the express provisions of the instrument creating or evidencing
        the same, or pursuant to which the same is outstanding, such
        indebtedness, lease, fee or obligation or such modification,
        renewal, extension, refunding or exchanged security is stated to
        be not superior in right of payment to the Guarantees.

                  (b) (i)   In the event of any insolvency or bankruptcy
        proceedings, or any receivership, liquidation, reorganization or
        other similar proceedings in connection therewith, relative to
        the Guarantor or it its creditors, in their capacity as such
        creditors, or to its property, or in the event of any
        proceedings for voluntary liquidation, dissolution or other
        winding up of the Guarantor, whether or not involving insolvency
        or bankruptcy, or in the event of any assignment for the benefit
        of creditors of the Guarantor or any marshalling of assets of
        the Guarantor, then the holders of Senior Indebtedness of the
        Guarantor shall first be entitled to receive payment in full of
        the principal of (and premium, if any) and interest, including
        interest thereon accruing after the commencement of any such
        proceeding, and other amounts due on or with respect to, all
        Senior Indebtedness of the Guarantor before the holders of any
        of the Securities shall be entitled to receive any payment on
        account of the obligations of the Guarantor relating to the
        principal of and Additional Amounts (pursuant to Section 2 of
        the Securities) on the Securities, and to that end the holders
        of Senior Indebtedness of the Guarantor shall be entitled to
        receive for application in payment thereof any payment or
        distribution of any kind or character, whether in cash, property
        or securities, which may be payable or deliverable in any such
        proceedings in respect of the obligations of the Guarantor
        relating to the Securities, other than securities of the
        Guarantor as reorganized or readjusted or securities of the
        Guarantor or any other corporation provided for by a plan of
        reorganization or readjustment the payment of which is
        subordinate, at least to the extent provided in this Section 4
        with respect to the obligations of the Guarantor relating to the
        Securities, to the payment of all Senior Indebtedness of the
        Guarantor, provided that the rights of the holders of Senior
        Indebtedness of the Guarantor are not altered by such
        reorganization or readjustment.  For the purposes of this
        Section 4, no consolidation, merger, conveyance or transfer made
        pursuant to the provisions of Section 3 shall be deemed to be a
        liquidation, reorganization, dissolution or other winding up of
        the Guarantor.


                       (ii) If under the circumstances set forth in
        paragraph (i) of this subsection, and notwithstanding the

                                       B-8PAGE
<PAGE>
        provisions thereof, any payment or distribution of assets of the
        Guarantor of any kind, whether in cash, property, or securities
        (other than securities of the Guarantor as reorganized or
        readjusted or securities of the Guarantor 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 Section 4 with respect to the
        obligations of the Guarantor relating to the Securities, to the
        payment of all Senior Indebtedness of the Guarantor, provided
        that the rights of the holders of Senior Indebtedness of the
        Guarantor are not altered by such reorganization or
        readjustment), shall be received by the holders of the Securities
        in respect of the obligations of the Guarantor before all Senior
        Indebtedness of the Guarantor is paid in full, such payment or
        distribution shall be paid over to the holders of Senior
        Indebtedness of the Guarantor, ratably, for application to the
        payment of all Senior Indebtedness of the Guarantor remaining
        unpaid until all Senior Indebtedness of the Guarantor shall have
        been paid in full, after giving effect to any concurrent payment
        or distribution to the holders of such Senior Indebtedness of the
        Guarantor.

                       (iii)  Upon any distribution of assets of the
        Guarantor referred to in this Section, the holders of Securities
        shall be entitled to rely upon any final order or decree of a
        court of competent jurisdiction in which such dissolution,
        winding up, liquidation or reorganization proceedings are
        pending, and the holders of Securities shall be entitled to rely
        upon a certificate of the liquidating trustee or agent or other
        person making any distribution to the holders of Securities for
        the purpose of ascertaining the persons entitled to participate
        in such distribution, the holders of Senior Indebtedness of the
        Guarantor and other indebtedness of the Guarantor, the amount
        thereof or payable thereon, the amount or amounts paid or
        distributed thereon and all other facts pertinent thereto or to
        this Section.

                  (c) (i)   Upon the maturity of any Senior Indebtedness
        of the Guarantor by lapse of time, acceleration or otherwise, all
        principal thereof (and premium, if any) and interest due
        thereon, including interest thereon accruing after the
        commencement of any proceeding of the type referred to in
        paragraph (i) of Section 4(b) above, and all other amounts due
        on or with respect thereto, shall first be paid in full, or such
        payment duly provided for in cash, before any payment, directly
        or indirectly, is made on account of the obligations of the
        Guarantor relating to the principal of and Additional Amounts
        (pursuant to Section 2 of the Securities) on the Securities.

                       (ii) Upon the happening of an event of default
        with respect to any Senior Indebtedness of the Guarantor, as
        defined therein or in the instrument under which it is
        outstanding, permitting the holders to accelerate the maturity
        thereof, then, unless and until such event of default shall have

                                       B-9PAGE
<PAGE>
        been cured or waived or shall have ceased to exist, no payment
        shall be made by the Guarantor, directly or indirectly, on
        account of the obligations of the Guarantor relating to the
        principal of and Additional Amounts (pursuant to Section 2 of the
        Securities) on the Securities. 

                  (d)  In case cash, securities or other property
        otherwise payable or deliverable to the holders of the Securities
        on account of the Guarantees shall have been applied, pursuant to
        Section 4(b) or (c), to the payment of Senior Indebtedness of
        the Guarantor, then, upon the payment in full of all Senior
        Indebtedness of the Guarantor, the holders of the Securities and
        coupons shall be subrogated to any rights of any holders of
        Senior Indebtedness of the Guarantor, to receive any further
        payments or distributions applicable to Senior Indebtedness of
        the Guarantor until the obligations of the Guarantor in respect
        of the Guarantees shall have been discharged in full, and such
        payments or distributions received by the holders of the
        Securities, by reason of such subrogation, of cash, securities
        or other property which otherwise would be paid or distributed
        to the holders of Senior Indebtedness of the Guarantor, shall,
        as between the Guarantor and its creditors other than the
        holders of Senior Indebtedness of the Guarantor, on the one
        hand, and the holders of the Securities on account of the
        Guarantees, on the other hand, be deemed to be a payment by the
        Guarantor on account of Senior Indebtedness of the Guarantor and
        not on account of the Securities. 

                  (e)  No present or future holder of any Senior
        Indebtedness of the Guarantor shall be prejudiced in any way in
        the right to enforce the subordination of the Guarantees by any
        act or failure to act on the part of the Guarantor.  The
        provisions of this Section 4 are solely for the purpose of
        defining the relative rights of the holders of Senior
        Indebtedness of the Guarantor, on the one hand, and the holders
        of the Securities on account of the Guarantees, on the other
        hand, against the Guarantor and its assets, and nothing contained
        in this Section 4 shall impair, as between the Guarantor and the
        holder of any Security, the obligation of the Guarantor, which is
        unconditional and absolute, to perform in accordance with the
        terms of its Guarantees, or prevent the holder of any Security,
        upon default hereunder or under such Security, from exercising
        all rights, powers and remedies otherwise provided herein or
        therein or by applicable law, all subject to the rights of the
        holders of Senior Indebtedness of the Guarantor under this
        Section 4 to receive cash, property or securities otherwise
        payable or deliverable to the holders of the Securities on
        account of the Guarantees.


                  (f)  Nothing contained in this Section 4 or in any
        Guarantees shall prevent at any time, except under the conditions
        described in Sections 4(b) and (c) hereof or during the pendency
        of any dissolution, winding up, liquidation or reorganization

                                      B-10PAGE
<PAGE>
        proceedings therein referred to, the Guarantor from performing
        its obligations under the Guarantees.

             5.   The Guarantor shall be subrogated to all rights of the
        holders of the Securities against the Company in respect of any
        amounts paid by the Guarantor pursuant to the provisions of this
        Guarantee; provided, however, that the Guarantor shall not be
        entitled to enforce or to receive any payments arising out of,
        or based upon, such right of subrogation until the principal of
        and Additional Amounts (pursuant to Section 2 of the Securities,
        if any, on) all of the Securities shall have been paid in full. 

             6.   THIS GUARANTEE SHALL BE GOVERNED BY AND CONSTRUED IN
        ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS,
        UNITED STATES OF AMERICA WITHOUT GIVING EFFECT TO ITS CONFLICTS
        OF LAWS RULES. 

             7.   All terms used in this Guarantee which are defined in
        the Fiscal Agency Agreement shall have the meanings assigned to
        them in the Fiscal Agency Agreement. 

             8.   Subject to the next following paragraph, the Guarantor
        hereby certifies and warrants that all acts, conditions and
        things required to be done and performed and to have happened
        precedent to the creation and issuance of this Guarantee and to
        constitute the same a legal, valid and binding obligations of
        the Guarantor enforceable in accordance with their terms, have
        been done and performed and have happened in due and strict
        compliance with all applicable laws. 

             9.   This Guarantee shall not become valid or obligatory for
        any purpose until the certificate of authentication on the
        Security upon which this Guarantee is endorsed shall have been
        duly signed by the Fiscal Agent acting under the Fiscal Agency
        Agreement.













                                      B-11PAGE
<PAGE>
             IN WITNESS WHEREOF, the Guarantor has caused this Guarantee
        to be duly executed in its corporate name by the manual or
        facsimile signature of a duly authorized officer. 

        Dated:  March 14, 1996


                                      THERMO ELECTRON CORPORATION

                                      By: _________________________

                                      Name: _______________________

                                      Title: ______________________


        Attest:

        _________________________



























                                      B-12PAGE
<PAGE>
                                                                EXHIBIT C



                       Form of Certificate to be Given by 
             The Euroclear Operator and Cedel Bank, societe anonyme


                                  CERTIFICATION


                               U.S. $_____________


                            THERMO ECOTEK CORPORATION


          Non-Interest Bearing Convertible Subordinated Debentures due
                                 March 15, 2001


                               (the  "Securities")



             This is to certify that, based solely on certifications we
        have received in writing, by tested telex or electronic
        transmission from member organizations appearing in our records
        as persons being entitled to a portion of the principal amount
        set forth below (our "Member Organizations"), substantially to
        the effect set forth in the Fiscal Agency Agreement relating to
        the above-captioned Securities, as of the date hereof, U.S.
        $_______________ aggregate principal amount of the
        above-captioned Securities is owned by persons that are not
        citizens or residents of the United States, domestic
        partnerships, domestic corporations or any estate or trust the
        income of which is subject to United States Federal income
        taxation regardless of its source or any other person deemed a
        "United States person" or a "U.S. person" under the Internal
        Revenue Code of 1986, as amended, or Regulation S under the U.S.
        Securities Act of 1933, as amended ("United States persons").

             The following denominations of Bearer Securities are
        requested:


                                 No. of Certificates      Amount

        $1,000 Denomination      ________________   =  $________________
        $10,000 Denomination     ________________   =  $________________
        Total Requested          ________________   =  $________________ 


                                       C-1PAGE
<PAGE>
             We further certify (i) that we are not making available
        herewith for exchange any portion of the Regulation S Global
        Security excepted in such certifications and (ii) that as of the
        date hereof we have not received any notification from any of
        our Member Organizations to the effect that the statements made
        by such Member Organization with respect to any portion of the
        part submitted herewith for exchange are no longer true and
        cannot be relied upon as of the date hereof.

             We further certify that under the rules of the undersigned
        organization, each Member Organization has agreed that any
        electronic certification shall have the effect of a signed
        certification and that all certifications shall be retained for
        at least four years in compliance with the rules set forth under
        Treas. Reg. Section 1. 163-5 (c)(2)(i)(D)(3)(ii).

             We understand that this certification is required in
        connection with certain tax laws and, if applicable, certain
        securities laws of the United States.  In connection therewith,
        if administrative or legal proceedings are commenced or
        threatened in connection with which this certification is or
        would be relevant, we irrevocably authorize you to produce this
        certification to any interested party in such proceedings.

             As used herein, "United States" means the United States of
        America (including the States and the District of Columbia); and
        its territories and possessions, including Puerto Rico, the U.S.
        Virgin Islands, Guam, American Samoa, Wake Island and the
        Northern Mariana Islands.  As used herein, "restricted period"
        means the period described in Section 1. 163-5(c)(2)(i)(D)(7) of
        the Treasury Regulations and "financial institution" means the
        persons described in Section 1. 165-12(c)(1)(v) of the Treasury
        Regulations.

        Dated:         ____________________, 1996 


                                      Yours faithfully,

                                      [MORGAN GUARANTY TRUST COMPANY OF 
                                      NEW YORK, BRUSSELS OFFICE, AS
                                      OPERATOR OF THE EUROCLEAR SYSTEM]

                                      [CEDEL BANK, SOCIETE ANONYME]

                                      By: _____________________________




                                       C-2PAGE
<PAGE>

                                                                EXHIBIT D



                Form of Certificate of Beneficial Ownership for 
                    Bearer Securities to be Provided to the 
              Euroclear Operator or to Cedel Bank, societe anonyme


                                  CERTIFICATION


                               U.S. $____________


                            THERMO ECOTEK CORPORATION


            Non-Interest Bearing Convertible Subordinated Debentures 
                               due March 15, 2001


                               (the "Securities")



             This is to certify that as of the date hereof and except as
        set forth below, $___________ aggregate principal amount of the
        above-mentioned Securities held by you for our account are owned
        by or on behalf of, (a) a person (other than a financial
        institution for purposes of resale during the restricted period)
        who is not a United States person; or (b) a United States person
        (other than a financial institution for purposes of resale
        during the restricted period) who is (i) a foreign branch of a
        United States financial institution or (ii) a United States
        person acquiring such Securities through the foreign branch of a
        United States financial institution and who for purposes of this
        certification holds such Securities through such financial
        institution on the date hereof, and, in the case of either (i)
        or (ii), such United States financial institution has agreed,
        for the benefit of the Company, to comply with the requirements
        of Section 165(j)(3)(A), (B) or (C) of the United States
        Internal Revenue Code of 1986, as from time to time amended, and
        the regulations thereunder; or (c) a financial institution for
        purposes of resale during the restricted period and such
        financial institution has not acquired such Securities for
        purposes of resale directly or indirectly to a United States
        person or to a person within the United States or its
        possessions; and the undersigned has obtained a similar
        certificate from its member organizations on which this
        certificate is based; provided, however, that if the undersigned
        has actual knowledge that the information contained in such a
        certificate is false (and, absent documentary evidence that the
        beneficial owner of such Security is not a United states person,

                                       D-1PAGE
<PAGE>
        it will be deemed to have actual knowledge that such certificate
        is false if it has a United States address for such beneficial
        owner, other than a financial institution described above), the
        undersigned will not deliver a Security in temporary or
        definitive bearer form to the person who signed such certificate
        notwithstanding the delivery of such certificate to the
        undersigned.


                                 No. of Certificates      Amount

        $1,000 Denomination      ________________    = $________________
        $10,000 Denomination     ________________    = $________________
        Total Requested          ________________    = $________________ 


             As used herein, (i) "United States person" means a citizen
        or resident of the United States, a corporation, partnership or
        other entity created or organized in or under the laws of the
        United States and an estate or trust the income of which is
        subject to United States Federal income taxation regardless of
        its source or any other person deemed a "United States person"
        or a "U.S. person" under the Internal Revenue Code of 1986, as
        amended, or Regulation S under the U.S. Securities Act of 1933,
        as amended, (ii) "United States" means the United States of
        America (including the States and the District of Columbia) and
        its territories and possessions, including Puerto Rico, the U.S.
        Virgin Islands, Guam, American Samoa, Wake Island and the
        Northern Mariana Islands, (iii) "restricted period" means the
        period described in Section 1.163-5(c)(2)(i)(D)(7) of the
        Treasury Regulations, and (iv) "financial institution" means the
        persons described in Section 1. 165-12(c)(1)(v) of the United
        States Treasury Regulations.

             We undertake to advise you promptly by tested telex on or
        prior to the date on which you intend to submit your
        certification relating to the Securities held by you for our
        account in accordance with your operating procedures if any
        applicable statement herein is not correct on such date, and in
        the absence of any such notification it may be assumed that this
        certification applies as of such date.

             This certification excepts and does not relate to
        U.S. $_______________ of such interest in the above Securities in
        respect of which we are not able to certify and as to which we
        understand exchange and delivery of definitive Securities cannot
        be made until we do so certify.

             We understand that this certification is required in
        connection with certain tax laws and, if applicable, certain
        securities laws of the United States.  In connection therewith,
        if administrative or legal proceedings are commenced or
        threatened in connection with which this certification is or
        would be relevant, we irrevocably authorize you to produce this

                                       D-2PAGE
<PAGE>
        certification or a copy hereof to any interested party in such
        proceedings.


        Dated:         ___________________, 1996 



                                           [Name]



                                           By: _________________________

                                                Signature

                                                As, or as agent for, the
                                                beneficial owner[s] of
                                                the Securities to which
                                                this certificate relates.























                                       D-3PAGE
<PAGE>
                                                               EXHIBIT E



                  Form of Certificate of Beneficial Ownership 
                for Registered Securities to be Provided to the 
              Euroclear Operator or to Cedel Bank, societe anonyme


                                 CERTIFICATION 


                               U.S. $____________


                            THERMO ECOTEK CORPORATION


            Non-Interest Bearing Convertible Subordinated Debentures 
                               due March 15, 2001


                               (the "Securities")



             Please issue U. S. $_______ of the U.S. $________ aggregate
        principal amount of the Securities held by you for our account
        in registered form.  We hereby certify to you that we are not a
        "U.S. Person" as defined in Regulation S under the United States
        Securities Act of 1933, as amended or a "United States person"
        as defined under the Internal Revenue Code of 1986, as amended,
        except as provided in U.S. Treasury Regulation Section
        1.163-5(c)(2)(i)(D).  The exact name of the beneficial holder
        that the Securities are to be registered in is as follows:

             The following denomination(s) of Registered Securities are
        requested (integral multiples of $1,000):


             Denominations       No. of Certificates           Amount

        $_________________       ________________    = $________________
        __________________       ________________    = $________________
        __________________       ________________    = $________________
        __________________       ________________    = $________________

             Total Requested     ________________    = $________________ 

             We irrevocably authorize you to produce this certificate or
        a copy hereof to any interested party in any administrative or
        proceedings with respect to the matters covered by this
        certificate.


                                       E-1PAGE
<PAGE>

        Dated:         __________________, 1996 



                                           Yours faithfully,


                                           [NAME]


                                           By: _____________________
                                                Signature

                                                To be completed by the
                                                account holder as, or as
                                                agent for, the beneficial
                                                owner(s) of the
                                                Securities to which this
                                                certificate relates.
























                                       E-2PAGE
<PAGE>

                                                                EXHIBIT F

                       Form of Certificate to be Given by 
             The Euroclear Operator and Cedel Bank, societe anonyme


                                  CERTIFICATION


                               U.S. $_____________


                            THERMO ECOTEK CORPORATION


            Non-Interest Bearing Convertible Subordinated Debentures 
                               due March 15, 1996


                               (the "Securities")



             This is to certify that, based solely on certifications we
        have received in writing, by tested telex or electronic
        transmission from member organizations appearing in our records
        as persons being entitled to a portion of the principal amount
        set forth below (our "Member Organizations"), substantially to
        the effect set forth in the Fiscal Agency Agreement, as of the
        date hereof, U.S. $___________ aggregate principal amount of the
        above-captioned Securities is owned by persons that are not
        citizens or residents of the United States, domestic
        partnerships, domestic corporations or any estate or trust the
        income of which is subject to United States Federal income
        taxation regardless of its source (except as provided in U.S.
        Treasury Regulation Section 1.163-5(c)(2)(i)(D)) or any other
        person deemed a "U.S. person" under Regulation S under the U.S.
        Securities Act of 1933, as amended.  

             The following denomination(s) of Registered Securities are
        requested (integral multiples of $1,000):

                                 No. of Certificates           Amount

        $1,000 Denomination      ________________    = $________________
        $10,000 Denomination     ________________    = $________________
        Total Requested          ________________    = $________________ 

             We further certify (i) that we are not making available
        herewith for exchange (or, if relevant, exercise of any rights)
        any portion of the Regulation S Global Security excepted in such
        certifications and (ii) that as of the date hereof we have not
        received any notification from any of our Member Organizations
        to the effect that the statements made by such Member

                                       F-1PAGE
<PAGE>
        Organization with respect to any portion of the part submitted
        herewith for exchange (or, if relevant, exercise of any rights)
        are no longer true and cannot be relied upon as of the date
        hereof.

             We understand that this certification is required in
        connection with certain tax laws and, if applicable, certain
        securities laws of the United States.  In connection therewith,
        if administrative or legal proceedings are commenced or
        threatened in connection with which this certification is or
        would be relevant, we irrevocably authorize you to produce this
        certification to any interested party in such proceedings.

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


        Dated:    __________________, 1996 


                                           Yours faithfully,

                                           [MORGAN GUARANTY TRUST COMPANY
                                           OF NEW YORK, BRUSSELS OFFICE,
                                           AS OPERATOR OF THE EUROCLEAR
                                           SYSTEM]

                                           [CEDEL BANK, SOCIETE ANONYME]

                                           By: _________________________




                                                                    Exhibit 11
                            THERMO ECOTEK CORPORATION

                        Computation of Earnings per Share


                                                        Three Months Ended
                                                  --------------------------
                                                     March 30,       April 1,
                                                          1996           1995
   --------------------------------------------------------------------------
     
   Net income (a)                                 $   609,000    $   411,000
                                                  ===========    ===========
   Shares:
   Weighted average shares outstanding             15,544,553     13,952,725

   Add: Shares issuable from assumed exercise
        of options (as determined by the
        application of the treasury stock method)     346,158              -

        Shares issuable from assumed conversion
        of noninterest-bearing subordinated
        convertible debentures                        419,787              -
                                                  -----------    -----------

   Weighted average shares - primary (b)           16,310,498     13,952,725
                                                  ===========    ===========

   Primary earnings per share (a) / (b)           $       .04    $       .03
                                                  ===========    ===========
PAGE
<PAGE>

                                                                    Exhibit 11
                            THERMO ECOTEK CORPORATION

                  Computation of Earnings per Share (continued)


                                                         Six Months Ended
                                                  ---------------------------
                                                     March 30,       April 1,
                                                          1996           1995
   --------------------------------------------------------------------------

   Net income (a)                                 $ 3,661,000    $ 2,687,000

   Add: Convertible debenture interest, net
        of tax                                        822,000        863,000
                                                  -----------    -----------

   Income applicable to common stock assuming
     dilution (b)                                 $ 4,483,000    $ 3,550,000
                                                  ===========    ===========
   Shares:
   Weighted average shares outstanding             15,536,028     13,555,251

   Add: Shares issuable from assumed exercise
        of options (as determined by the
        application of the treasury stock method)     320,954              -

        Shares issuable from assumed conversion
        of noninterest-bearing subordinated
        convertible debentures                        209,893              -
                                                  -----------    -----------

   Weighted average shares - primary (c)           16,066,875     13,555,251

   Add: Incremental shares issuable from assumed
        exercise of options (as determined
        by the application of the treasury
        stock method)                                  43,475        313,470

   Add: Shares issuable from assumed conversion
        of 4% subordinated convertible debentures   7,210,526      7,210,526
                                                  -----------    -----------

   Weighted average shares - fully diluted (d)     23,320,876     21,079,247
                                                  ===========    ===========

   Primary earnings per share (a) / (c)           $       .23    $       .20
                                                  ===========    ===========

   Fully diluted earnings per share (b) / (d)     $       .19    $       .17
                                                  ===========    ===========


<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
ECOTEK CORP.'S QUARTERLY REPORT FILED ON FORM 10-Q FOR THE QUARTER ENDED MARCH
30, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-28-1996
<PERIOD-END>                               MAR-30-1996
<CASH>                                          81,374
<SECURITIES>                                         0
<RECEIVABLES>                                   20,555
<ALLOWANCES>                                         0
<INVENTORY>                                      9,164
<CURRENT-ASSETS>                               124,895
<PP&E>                                         283,452
<DEPRECIATION>                                  37,444
<TOTAL-ASSETS>                                 400,783
<CURRENT-LIABILITIES>                           47,083
<BONDS>                                        149,018
<COMMON>                                         1,558
                                0
                                          0
<OTHER-SE>                                      95,263
<TOTAL-LIABILITY-AND-EQUITY>                   400,783
<SALES>                                         67,801
<TOTAL-REVENUES>                                67,801
<CGS>                                           50,749
<TOTAL-COSTS>                                   50,749
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,464
<INCOME-PRETAX>                                  6,781
<INCOME-TAX>                                       575
<INCOME-CONTINUING>                              3,661
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,661
<EPS-PRIMARY>                                      .23
<EPS-DILUTED>                                      .19
        

</TABLE>


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