THERMO TERRATECH INC
DEF 14A, 1997-08-14
TESTING LABORATORIES
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   Thermo TerraTech Inc.
   81 Wyman Street
   Waltham, Massachusetts 02254-9046




                                                               August 13, 1997


   Dear Stockholder:
    
        The enclosed Notice calls the 1997 Annual Meeting of the Stockholders
   of Thermo TerraTech Inc.  I respectfully request all Stockholders to attend
   this meeting, if possible.
    
        Our Annual Report for the fiscal year ended March 29, 1997, is
   enclosed.  I hope you will read it carefully.  Feel free to forward any
   questions you may have if you are unable to be present at the meeting.

        Enclosed with this letter is a proxy authorizing three officers of the
   Corporation to vote your shares for you if you do not attend the meeting.
   Whether or not you are able to attend the meeting, I urge you to complete
   your proxy and return it to our transfer agent, American Stock Transfer &
   Trust Company, in the enclosed addressed, postage-paid envelope, as a
   quorum of the Stockholders must be present at the meeting, either in person
   or by proxy.
    
        I would appreciate your immediate attention to the mailing of this
   proxy.
    
                                           Yours very truly,
    




                                           JOHN P. APPLETON
                                           President and Chief 
                                           Executive Officer
PAGE
<PAGE>









   Thermo TerraTech Inc.
   81 Wyman Street
   Waltham, Massachusetts 02254-9046



                                                               August 13, 1997


   To the Holders of the Common Stock of
        THERMO TERRATECH INC.


                            NOTICE OF ANNUAL MEETING 
        The 1997 Annual Meeting of the Stockholders of Thermo TerraTech Inc.
   (the "Corporation") will be held on Wednesday, September 24, 1997, at 11:00
   a.m. at the offices of Thermo Electron Corporation, 81 Wyman Street,
   Waltham, Massachusetts.  The purpose of the meeting is to consider and take
   action upon the following matters:
    
        1.   Election of six directors.

        2.   A proposal recommended by the Board of Directors to extend the
             term of the Corporation's employees stock purchase plan to
             November 2, 2005. 

        3.   Such other business as may properly be brought before the meeting
             and any adjournment thereof.
    
        The transfer books of the Corporation will not be closed prior to the
   meeting, but, pursuant to appropriate action by the Board of Directors, the
   record date for the determination of the Stockholders entitled to receive
   notice of and to vote at the meeting is August 8, 1997.
    
        The By-laws require that the holders of a majority of the stock issued
   and outstanding and entitled to vote be present or represented by proxy at
   the meeting in order to constitute a quorum for the transaction of
   business. It is important that your stock be represented at the meeting
   regardless of the number of shares you may hold. Whether or not you are
   able to be present in person, please sign and return promptly the enclosed
   proxy in the accompanying envelope, which requires no postage if mailed in
   the United States.
    
        This notice, the proxy and proxy statement enclosed herewith are sent
   to you by order of the Board of Directors.

                                                SANDRA L. LAMBERT
                                                      Secretary
PAGE
<PAGE>


                                 PROXY STATEMENT

        The enclosed proxy is solicited by the Board of Directors of Thermo
   TerraTech Inc. (the "Corporation") for use at the 1997 Annual Meeting of
   the Stockholders (the "Meeting") to be held on Wednesday, September 24,
   1997, at 11:00 a.m. at the offices of Thermo Electron Corporation, 81 Wyman
   Street, Waltham, Massachusetts, and any adjournment thereof. The mailing
   address of the executive office of the Corporation is 81 Wyman Street,
   Waltham, Massachusetts 02254.  This proxy statement and the enclosed proxy
   were first furnished to Stockholders of the Corporation on or about August
   15, 1997.
                                VOTING PROCEDURES

        The Board of Directors intends to present to the Meeting the election
   of six directors, constituting the entire Board of Directors, as well as
   one other matter: a proposal to extend the term of the Corporation's
   employees' stock purchase plan to November 2, 2005.

        The representation in person or by proxy of a majority of the
   outstanding shares of common stock of the Corporation, $.10 par value (the
   "Common Stock"), entitled to vote at the Meeting is necessary to provide a
   quorum for the transaction of business at the Meeting. Shares can only be
   voted if the Stockholder is present in person or is represented by
   returning a properly signed proxy. Each Stockholder's vote is very
   important. Whether or not you plan to attend the Meeting in person, please
   sign and promptly return the enclosed proxy card, which requires no postage
   if mailed in the United States. All signed and returned proxies will be
   counted towards establishing a quorum for the Meeting, regardless of how
   the shares are voted. 
    
        Shares represented by proxy will be voted in accordance with your
   instructions. You may specify your choice by marking the appropriate box on
   the proxy card. If your proxy card is signed and returned without
   specifying choices, your shares will be voted for the management nominees
   for directors, for the management proposal and as the individuals named as
   proxy holders on the proxy deem advisable on all other matters as may
   properly come before the Meeting. 
    
        In order to be elected a director, a nominee must receive the
   affirmative vote of a majority of the shares of Common Stock present and
   entitled to vote on the election.  For the management proposal to extend
   the term of the Corporation's employees' stock purchase plan, the
   affirmative vote of a majority of the shares present in person or
   represented by proxy and entitled to vote on the matter is necessary for
   approval.  Withholding authority to vote for a nominee for director or an
   instruction to abstain from voting on a proposal will be treated as shares
   present and entitled to vote and, for purposes of determining the outcome
   of the vote, will have the same effect as a vote against the nominee or the
   proposal. With respect to the election of directors and the management
   proposal, broker "non-votes" will not be treated as shares present and
   entitled to vote on a voting matter and will have no effect on the outcome
   of the vote.  A broker "non-vote" occurs when a nominee holding shares for
   a beneficial holder does not have discretionary voting power and does not
   receive voting instructions from the beneficial owner.
    
        A Stockholder who returns a proxy may revoke it at any time before the
   Stockholder's shares are voted at the Meeting by written notice to the
   Secretary of the Corporation received prior to the Meeting, by executing
   and returning a later-dated proxy or by voting by ballot at the Meeting. 


        The outstanding stock of the Corporation entitled to vote (excluding
   shares held in treasury by the Corporation) as of August 8, 1997, consisted
   of 18,873,210 shares of Common Stock. Only Stockholders of record at the
   close of business on August 8, 1997, are entitled to vote at the Meeting.
   Each share is entitled to one vote.

PAGE
<PAGE>


                                 --PROPOSAL 1--

                              ELECTION OF DIRECTORS

        Six directors are to be elected at the Meeting, each to hold office
   until his successor is chosen and qualified or until his earlier
   resignation, death or removal.
   Nominees for Directors

        Set forth below are the names of the persons nominated as directors,
   their ages, their offices in the Corporation, if any, their principal
   occupation or employment for the past five years, the length of their
   tenure as directors and the names of other public companies in which such
   persons hold directorships. Information regarding their beneficial
   ownership of the Corporation's Common Stock and of the common stock of its
   parent corporation, Thermo Electron Corporation ("Thermo Electron"), and of
   its subsidiary, Thermo Remediation Inc. ("Thermo Remediation"), is reported
   under the caption "Stock Ownership." All of the nominees are currently
   directors of the Corporation.

   John P. Appleton       Dr. Appleton, 62, has been president, chief
                          executive officer and a director of the
                          Corporation since September 1993.  Dr. Appleton
                          has been chairman, chief executive officer and a
                          director of Thermo Remediation since September
                          1993 and has served as a vice president of Thermo
                          Electron since 1975 in various managerial
                          capacities.

   John N. Hatsopoulos    Mr. Hatsopoulos, 63, has been a director of the
                          Corporation since 1986 and its vice president and
                          chief financial officer since 1988.  Mr.
                          Hatsopoulos has been the president of Thermo
                          Electron since January 1997 and its chief
                          financial officer since 1988.  Prior to becoming
                          president, he was an executive vice president of
                          Thermo Electron from 1986 to January 1997. Mr.
                          Hatsopoulos is also a director of LOIS/USA Inc.,
                          Metrika Systems Corporation, Thermedics Inc.,
                          Thermedics Detection Inc., Thermo Ecotek
                          Corporation, Thermo Fibergen Inc. Thermo Fibertek
                          Inc., Thermo Instrument Systems Inc., Thermo
                          Power Corporation and ThermoTrex Corporation.

   Brian D. Holt          Mr. Holt, 48, became a director of the
                          Corporation in February, 1997.  Mr. Holt has been
                          the president and chief executive officer of
                          Thermo Ecotek Corporation, a majority-owned
                          subsidiary of Thermo Electron involved in clean
                          combustion and engineered clean fuels, naturally
                          derived biopesticides and other environmentally
                          sound technologies, since February 1994 and a
                          director of that company since January 1995.  For
                          more than five years prior to his appointment as
                          an officer of the Thermo Ecotek Corporation, he
                          was president and chief executive officer of
                          Pacific Generation Company, a financier, builder,
                          owner and operator of independent power
                          facilities.  Mr. Holt is also a director of KFx,
                          Inc.
PAGE
<PAGE>


   Donald E. Noble        Mr. Noble, 82, has been a director of the
                          Corporation since 1986 and served as chairman of
                          the board from 1992 to November 1994.  For more
                          than 20 years, from 1959 to 1980, Mr. Noble
                          served as the chief executive officer of
                          Rubbermaid Incorporated, first with the title of
                          president and then as chairman of the board.  Mr.
                          Noble is also a director of Thermo Electron,
                          Thermo Fibertek Inc., Thermo Power Corporation
                          and Thermo Sentron Inc.  

   William A. Rainville   Mr. Rainville, 55, has been a director of the
                          Corporation since February 1993 and chairman of
                          the Board since November 1994.  Mr. Rainville has
                          been president and chief executive officer of
                          Thermo Fibertek Inc., a majority owned subsidiary
                          of Thermo Electron that develops and manufactures
                          equipment and products for the paper making and
                          paper recycling industries, since its inception
                          in 1991, a senior vice president of Thermo
                          Electron since March 1993 and a vice president of
                          Thermo Electron from 1986 to 1993.  From 1984
                          until January 1993, Mr. Rainville was the
                          president and chief executive officer of Thermo
                          Electron Web Systems Inc., a subsidiary of Thermo
                          Fibertek Inc.  Mr. Rainville is also a director
                          of Thermo Ecotek Corporation, Thermo Fibergen
                          Inc., Thermo Fibertek Inc. and Thermo
                          Remediation.

   Polyvios C. Vintiadis  Mr. Vintiadis, 61 has been a director of the
                          Corporation since September 1992.  Mr. Vintiadis
                          has been the chairman and chief executive officer
                          of Towermarc Corporation, a real estate
                          development company, since 1984.  Prior to
                          joining Towermarc Corporation, Mr. Vintiadis was
                          a principal of Morgens, Waterfall & Vintiadis,
                          Inc.,  a financial services firm, with whom he
                          remains associated.  For more than 20 years prior
                          to that time, Mr. Vintiadis was employed by
                          Arthur D. Little & Company, Inc.  Mr. Vintiadis
                          is also a director of Thermo Instrument Systems
                          Inc. 


   Committees of the Board of Directors and Meetings

        The Board of Directors has established an Audit Committee and a Human
   Resources Committee, each consisting solely of outside directors. The
   present members of the Audit Committee are Mr. Vintiadis (Chairman) and Mr.
   Noble.  The Audit Committee reviews the scope of the audit with the
   Corporation's independent public accountants and meets with them for the
   purpose of reviewing the results of the audit subsequent to its completion.
   The present members of the Human Resources Committee are Mr. Noble
   (Chairman) and Mr. Vintiadis. The Human Resources Committee reviews the
   performance of senior members of management, recommends executive
   compensation and administers the Corporation's stock option and other
   stock-based compensation plans. The Corporation does not have a nominating
   committee of the Board of Directors. The Board of Directors met six times,
   the Audit Committee met twice and the Human Resources Committee met six
PAGE
<PAGE>


   times during fiscal 1997. Each director attended at least 75% of all
   meetings of the Board of Directors and Committees on which he served held
   during fiscal 1997, except Dr. Appleton and Mr. Hatsopoulos, who each
   attended 67% of such meetings.  Dr. Appleton attended all of the meetings
   of the Board of Directors held in person, but did not participate in two
   meetings held by means of conference telephone due to scheduling
   difficulties while he was traveling overseas on company business.  Mr.
   Hatsopoulos is the chief financial officer of Thermo Electron and each of
   its publicly held subsidiaries, and his responsibilities require him to
   travel extensively on company business.

   Compensation of Directors

         Cash Compensation

        Directors who are not employees of the Corporation, of Thermo Electron
   or of any other company affiliated with Thermo Electron (also referred to
   as "outside directors"), receive an annual retainer of $4,000 and a fee of
   $1,000 per day for attending regular meetings of the Board of Directors and
   $500 per day for participating in meetings of the Board of Directors held
   by means of conference telephone and for participating in certain meetings
   of committees of the Board of Directors. Dr. Appleton, Mr. Hatsopoulos, Mr.
   Holt and Mr. Rainville are all employees of Thermo Electron or its
   subsidiaries and do not receive any cash compensation from the Corporation
   for their services as directors.  Directors are also reimbursed for
   out-of-pocket expenses incurred in attending such meetings.
PAGE
<PAGE>


        Deferred Compensation Plan for Directors

        Under the Deferred Compensation Plan for Directors (the "Deferred
   Compensation Plan"), a director has the right to defer receipt of his cash
   fees until he ceases to serve as a director, dies or retires from his
   principal occupation. In the event of a change in control or proposed
   change in control of the Corporation that is not approved by the Board of
   Directors, deferred amounts become payable immediately. Either of the
   following is deemed to be a change of control:  (a) the acquisition,
   without the prior approval of the Board of Directors, directly or
   indirectly, by any person of 50% or more of the outstanding Common Stock or
   25% or more of the outstanding common stock of Thermo Electron; or (b) the
   failure of the persons serving on the Board of Directors immediately prior
   to any contested election of directors or any exchange offer or tender
   offer for the Common Stock or the common stock of Thermo Electron to
   constitute a majority of the Board of Directors at any time within two
   years following any such event.  Amounts deferred pursuant to the Deferred
   Compensation Plan are valued at the end of each quarter as units of the
   Corporation's Common Stock. When payable, amounts deferred may be disbursed
   solely in shares of Common Stock accumulated under the Deferred
   Compensation Plan. A total of 41,416 shares of Common Stock have been
   reserved for issuance under the Deferred Compensation Plan.  As of June 28,
   1997, deferred units equal to 24,447 full shares of Common Stock were
   accumulated for current directors under the Deferred Compensation Plan. 

        Directors Stock Option Plan

        The Corporation's Directors Stock Option Plan (then "Directors Plan")
   provides for the grant of stock options to purchase shares of Common Stock
   of the Corporation and its majority owned subsidiaries to outside directors
   as additional compensation for their service as directors.  Under the
   Directors Plan, outside directors are automatically granted options to
   purchase 1,000 shares of Common Stock annually and are also automatically
   granted every five years options to purchase 1,500 shares of the common
   stock of a majority-owned subsidiary of the Corporation that is "spun out"
   to outside investors.  

        Pursuant to the Directors Plan, outside directors receive an annual
   grant of options to purchase 1,000 shares of Common Stock pursuant to the
   Directors Plan at the close of business on the date of each Annual Meeting
   of the Stockholders of the Corporation.  Options evidencing annual grants
   may be exercised at any time from and after the six-month anniversary of
   the grant date of the option and prior to the expiration of the option.
   Options granted under this provision before 1995 expire after seven years;
   commencing in 1995, the option term was shortened to three years.  Shares
   acquired upon exercise of the options are subject to repurchase by the
   Corporation at the exercise price if the recipient ceases to serve as a
   director of the Corporation or any other Thermo Electron company prior to
   the first anniversary of the grant date.

        In addition, under the Directors Plan, outside directors are
   automatically granted every five years options to purchase 1,500 shares of
   common stock of each majority-owned subsidiary of the Corporation that is
   "spun out" to outside investors.  The grant occurs on the close of business
   on the date of the first Annual Meeting of the Stockholders next following
   the subsidiary's spinout, which is the first to occur of either an initial
   public offering of the subsidiary's common stock or a sale of such stock to
   third parties in an arms-length transaction, and also as of the close of
   business on the date of every fifth Annual Meeting of the Stockholders of
   the Corporation that occurs thereafter during the duration of the Plan.
   The options granted vest and become exercisable on the fourth anniversary
   of the date of grant, unless prior to such date the subsidiary's common
PAGE
<PAGE>


   stock is registered under Section 12 of the Securities Exchange Act of
   1934, as amended (''Section 12 Registration").  In the event that the
   effective date of Section 12 Registration occurs before the fourth
   anniversary of the grant date, the option will become immediately
   exercisable and the shares acquired upon exercise will be subject to
   restrictions on transfer and the right of the Corporation to repurchase
   such shares at the exercise price in the event the director ceases to serve
   as a director of the Corporation or any other Thermo Electron company.  In
   the event of Section 12 Registration, the restrictions and repurchase
   rights shall lapse or be deemed to lapse at the rate of 25% per year,
   starting with the first anniversary of the grant date.  These options
   expire after five years.  

        The exercise price for options granted under the Directors Plan is the
   average of the closing prices of the Common Stock as reported on the
   American Stock Exchange (or other principal market on which the Common
   Stock is then traded) for the five trading days preceding and including the
   date of grant, or, if the shares are not then traded, at the last price per
   share paid by third parties in an arms-length transaction prior to the
   option grant.  As of June 28, 1997, options to purchase 22,700 shares of
   Common Stock had been granted under the Director's Plan,  of which 15,500
   were outstanding, 1,400 had lapsed,  and 5,800 had been exercised; and
   options to purchase 53,700 shares of Common Stock were reserved and
   available for grant under the Director's Plan as of June 28, 1997.


   Stock Ownership Policies for Directors

        During fiscal 1997, the Human Resources Committee of the Board of
   Directors (the "Committee") established a stock holding policy for
   directors.  The stock holding policy requires each director to hold a
   minimum of 1,000 shares of Common Stock.  Directors are requested to
   achieve this ownership level by the 1998 Annual Meeting of Stockholders.
   Directors who are also executive officers of the Corporation are required
   to comply with a separate stock holding policy established by the Committee
   in fiscal 1997, which is described in "Committee Report on Executive
   Compensation - Stock Ownership Policies."  

        In addition, the Committee adopted a policy requiring directors to
   hold shares of the Corporation's Common Stock equal to one-half of their
   net option exercises over a period of five years.  The net option exercise
   is determined by calculating the number of shares acquired upon exercise of
   a stock option, after deducting the number of shares that could have been
   traded to exercise the option and the number of shares that could have been
   surrendered to satisfy tax withholding obligations attributable to the
   exercise of the option.  This policy is also applicable to executive
   officers and is described in "Committee Report on Executive Compensation -
   Stock Ownership Policies." 


                                 STOCK OWNERSHIP

        The following table sets forth the beneficial ownership of Common
   Stock, as well as the common stock of Thermo Electron and Thermo
   Remediation, as of June 28, 1997, with respect to (i) each person who was
   known by the Corporation to own beneficially more than 5% of the
   outstanding shares of Common Stock, (ii) each director, (iii) each
   executive officer named in the summary compensation table under the heading
   "Executive Compensation" and (iv) all directors and current executive
   officers as a group.
PAGE
<PAGE>


        While certain directors or executive officers of the Corporation are
   also directors and executive officers of Thermo Remediation or Thermo
   Electron, all such persons disclaim beneficial ownership of the shares of
   Common Stock owned by Thermo Electron and the shares of the common stock of
   Thermo Remediation owned by the Corporation.







                                   Thermo       Thermo        Thermo
                                 TerraTech     Electron

               Name (1)           Inc. (2)    Corporation   Remediation
               --------           --------    -----------   -----------
                                                  (3)        Inc. (4)
                                                  ---        --------

        Thermo Electron           15,491,635           N/A           N/A
        Corporation (5)

        John P. Appleton             216,989       144,749        63,000

        John N. Hatsopoulos           62,306       632,768        42,182

        Emil C. Herkert              250,000        39,600         2,000

        Brian D. Holt                      0       164,493             0

        Donald E. Noble               49,934        55,198        10,500

        Jeffrey L. Powell             82,835        41,287       111,000

        William A. Rainville          60,000       249,292        24,000

        Polyvios C. Vintiadis         11,030         2,500         1,500

        All directors and
        current executive
        officers as a group 
             (9 persons)             744,240     1,465,381       269,182




   (1)  Except as reflected in the footnotes to this table, shares
        beneficially owned consist of shares owned by the indicated person or
        by that person for the benefit of minor children and all share
        ownership includes sole voting and investment power. 

   (2)  Shares of Common Stock beneficially owned by Dr. Appleton, Mr.
        Hatsopoulos, Mr. Herkert, Mr. Noble, Mr. Powell, Mr. Rainville, Mr.
        Vintiadis and all directors and current executive officers as a group
        include 215,000, 40,000, 187,500, 8,200, 63,000, 60,000, 6,300 and
        585,000 shares, respectively, that such person or group has the right
        to acquire within 60 days of June 28, 1997, through the exercise of
        stock options.  Shares beneficially owned by Dr. Appleton, Mr.
        Hatsopoulos and all directors and current executive officers as a
        group include 255, 265 and 771 full shares, respectively, allocated
        through June 28, 1997, to accounts maintained pursuant to Thermo
        Electron's Employee Stock Ownership Plan, of which the trustees, who
        have investment power over its assets, were as of June 28, 1997,
        executive officers of Thermo Electron ("ESOP").  Shares beneficially
        owned by Mr. Noble, Mr. Vintiadis and all directors and current
        executive officers as a group include 18,694, 4,730 and 23,424 full
        shares, respectively, allocated through June 28, 1997, to their
        respective accounts maintained under the Corporation's Deferred
        Compensation Plan for Directors.  Shares beneficially owned by Mr.
        Hatsopoulos and all directors and current executive officers as a
        group include 12,500 shares that Mr. Hatsopoulos has the right to
        acquire within 60 days after June 28, 1997, through the exercise of a
        stock purchase warrant.  Except for Dr. Appleton, who beneficially
        owned approximately 1.2% of the Common Stock outstanding as of June
        28, 1997, no director or executive officer beneficially owned more
        than 1% of the Common Stock outstanding as of June 28, 1997; all
        directors and current executive officers as a group beneficially owned
        4.1% of the Common Stock outstanding as of such date.

   (3)  Shares of the common stock of Thermo Electron beneficially owned by
        Dr. Appleton, Mr. Hatsopoulos, Mr. Herkert, Mr. Holt, Mr. Noble, Mr.
        Powell, Mr. Rainville and all directors and current executive officers
        as a group include 107,257, 535,685, 38,100, 164,000, 9,375, 35,012,
        197,236 and 1,181,802 shares, respectively, that such person or
        members of the group have the right to acquire within 60 days of June
        28, 1997, to accounts maintained pursuant to the ESOP. Shares
        beneficially owned by Mr. Hatsopoulos and all directors and current
        executive officers as a group include 1,934 and 3,258 full shares,
        respectively, allocated through June 28, 1997, to accounts maintained
        pursuant to the ESOP.  Shares beneficially owned by Mr. Noble and all
        directors and current executive officers as a group each include
        42,408 shares allocated through June 28, 1997, to Mr. Noble's account
        maintained pursuant to Thermo Electron's Deferred Compensation Plan
        for directors.  No director or executive officer beneficially owned
        more than 1% of such common stock outstanding as of such date; all
PAGE
<PAGE>


        directors and current executive officers as a group beneficially owned
        1% of the Thermo Electron common stock outstanding as of June 28,
        1997.

   (4)  Shares of the common stock of Thermo Remediation beneficially owned by
        Dr. Appleton, Mr. Hatsopoulos, Mr. Noble, Mr. Powell, Mr. Rainville,
        Mr. Vintiadis and all directors and current executive officers as a
        group include 63,000, 22,500, 6,000, 111,000, 22,500, 1,500 and
        241,500 shares, respectively, that such person or group has the right
        to acquire within 60 days after June 28, 1997, through the exercise of
        stock options.  No director or executive officer beneficially owned
        more than 1% of the common stock of Thermo Remediation outstanding as
        of June 28, 1997; all directors and current executive officers as a
        group beneficially owned 2.1% of such common stock outstanding as of
        such date.

   (5)  Shares of Common Stock beneficially owned by Thermo Electron include
        459,677 shares that Thermo Electron and two of its majority owned
        subsidiaries have the right to acquire within 60 days of June 28,
        1997, through the conversion of certain convertible notes of the
        Corporation held by Thermo Electron and such subsidiaries.  As of June
        28, 1997, Thermo Electron beneficially owned approximately 85.9% of
        the outstanding Common Stock.  Thermo Electron's address is 81 Wyman
        Street, Waltham, Massachusetts 02254-9046.


   Section 16(a) Beneficial Ownership Reporting Compliance

        Section 16(a) of the Securities Exchange Act of 1934 requires the
   Corporation's directors and executive officers, and beneficial owners of
   more than 10% of the Common Stock, such as Thermo Electron, to file with
   the Securities and Exchange Commission initial reports of ownership and
   periodic reports of changes in ownership of the Corporation's securities.
   Based upon a review of such filings, all Section 16(a) filing requirements
   applicable to such persons were complied with during fiscal 1997, except in
   the following instances.  The Form 3 of Mr. Brian D. Holt, a director of
   the Corporation, was filed late.  Thermo Electron filed eight Forms 4 late,
   reporting a total of 34 transactions consisting of 28 open market purchases
   of Common Stock and six transactions associated with the grant and lapse of
   options to purchase Common Stock granted to employees under its stock
   option program.


                             EXECUTIVE COMPENSATION

        The following table summarizes compensation for services to the
   Corporation in all capacities awarded to, earned by or paid to the
   Corporation's chief executive officer and its two other most highly
   compensated executive officers for the last three fiscal years.  No other
   executive officers of the Corporation who held office during fiscal 1997
   met the definition of "highly compensated" within the meaning of the
   Securities and Exchange Commission's executive compensation disclosure
   rules for such period.  

        The Corporation is required to appoint certain executive officers and
   full-time employees of Thermo Electron as executive officers of the
   Corporation, in accordance with the Thermo Electron Corporate Charter. The
   compensation for these executive officers is determined and paid entirely
   by Thermo Electron. The time and effort devoted by these individuals to the
   Corporation's affairs is provided to the Corporation under the Corporate
   Services Agreement between the Corporation and Thermo Electron.

   Accordingly, the compensation for these individuals is not reported in the
   following table.

<SEGEMENT>
TTT2
[/SEGMENTS]


   (1)  In addition to grants of  options to purchase Common Stock of the
        Corporation (designated in the table as TTT), the named executive
        officers of the Corporation have been granted options to purchase
        common stock of Thermo Electron and certain of its other subsidiaries
        as part of Thermo Electron's stock option program.  Options have been
        granted during the last three fiscal years to the named executive
        officers in the following Thermo Electron companies:  Thermo
        Remediation (designated in the table as THN), Thermo Electron
        (designated in the table as TMO), Thermo BioAnalysis Corporation
        (designated in the table as TBA), Thermo Fibergen Inc. (designated in
        the table as TFG), ThermoLase Corporation (designated in the table as
        TLZ), ThermoLyte Corporation (designated in the table as TLT), Thermo
        Optek Corporation (designated in the table as TOC), ThermoQuest
        Corporation (designated in the table as TMQ), Thermo Sentron Inc.
        (designated in the table as TSR), and Trex Medical Corporation
        (designated in the table as TXM).

   (2)  Represents the amount of matching contributions made by the
        individual's employer on behalf of the named executive officers
        participating in Thermo Electron's 401(k) plan or, in the case of Mr.
        Herkert, the Elson T. Killam Savings and Investment Plan.

   (3)  Dr. Appleton was appointed president and chief executive officer of
        the Corporation effective September 1, 1993.  Dr. Appleton is also a
        vice president of Thermo Electron and, until 1997, served as the chief
        executive officer of Thermo Remediation.  A portion of Dr. Appleton's
        annual cash compensation (salary and bonus) has been allocated to and
        paid by each of the Corporation, Thermo Remediation and Thermo
        Electron over each of the past three fiscal years as compensation for
        the services provided to these companies based on the time he devoted
        to his responsibilities to these companies.  The annual cash
        compensation reported in the table for Dr. Appleton represents the
        amount paid from all sources, including the Corporation, solely for
        Dr. Appleton's services as the president and chief executive officer
        of the Corporation.  For fiscal 1997, 1996 and 1995, approximately
        70%, 70% and 85%, respectively, of Dr. Appleton's annual cash
        compensation was paid by the Corporation for his services as its
        president and chief executive officer.  These percentages include the
        allocation of a portion of Dr. Appleton's annual cash compensation to
        the management of the Thermo Terra Tech joint venture, which was
        acquired by the Corporation in April 1995 in a transaction accounted
        for in a manner similar to pooling of interests accounting.  For
        fiscal 1997, 1996 and 1995, an additional 20%, 20% and 5%,
        respectively, of Dr. Appleton's annual cash compensation was allocated
        to Thermo Remediation for Dr. Appleton's service as its chief
        executive officer, and such amount is not included in the table.
        Bonuses paid to Dr. Appleton reflect compensation decisions based on
        calendar year performance, in accordance with Thermo Electron's
        compensation practices for its officers.  Dr. Appleton has served as
        an officer of Thermo Electron since 1975 and has been granted options
        to purchase shares of the common stock of Thermo Electron and certain
        of its subsidiaries other than the Corporation from time to time by
PAGE
<PAGE>


        Thermo Electron or such other subsidiaries.  These options are not
        reported here as they were granted as compensation for service to
        Thermo Electron companies in capacities other than in his capacity as
        the president and chief executive officer of the Corporation.

   (4)  Mr. Herkert was appointed an executive officer of the Corporation on
        May 8, 1996.


   Stock Options Granted During Fiscal 1997

        The following table sets forth information concerning individual
   grants of stock options made during fiscal 1997 to the Corporation's chief
   executive officer and the other named executive officers. It has not been
   the Corporation's policy in the past to grant stock appreciation rights,
   and no such rights were granted during fiscal 1997.  

        Dr. Appleton has served as a vice president of Thermo Electron since
   1975 and from time to time has been granted options to purchase common
   stock of Thermo Electron and certain of its subsidiaries other than the
   Corporation and Thermo Remediation.  These options are not reported in this
   table as they were granted as compensation for service to other Thermo
   Electron companies in capacities other than in his capacity as the chief
   executive officer of the Corporation.  No options were granted to Dr.
   Appleton during fiscal 1997 in his capacity as president and chief
   executive officer of the Corporation.



<TABLE>



                                   Option Grants in Fiscal 1997

                                                                                             
                                                                                       Potential Realizable       
                          Number of                                                    Value at Assumed   
                          Securities        Percent of                                 Annual Rates of Stock   
                                            Total Options                              Price Appreciation for
                          Underlying        Granted to       Exercise                  
                          Options           Employees in     Price                     Option Term
                                                             Per         Expiration    -----------
        Name              Granted (1)       Fiscal Year (2)  Share       Date          5%           10%
        ----              -------           ---------------- -----       ----------    --           ---
        <S>               <C>               <C>              <C>         <C>
        Jeffrey L. Powell   600 (TMO)       0.06% (3)         $42.79      05/22/99     $4,044      $8,496
                          2,000 (TFG)       0.4%  (3)         $10.00      09/12/08     $15,920    $42,760
                          6,000 (TOC)       0.2%  (3)         $12.00      04/09/08     $57,300   $153,960
        Emil C. Herkert     300 (TMO)       0.03% (3)         $42.79      05/22/99      $2,022     $4,248        


</TABLE>


   (1)  As part of Thermo Electron's stock option program, options have been
        granted during fiscal 1997 to the named executive officers to purchase
        the common stock of Thermo Electron (designated in the table as TMO),
        Thermo Fibergen Inc. (designated in the table as TFG) and Thermo Optek
        Corporation (designated in the table as TOC).  All of the options
        granted during the fiscal year are immediately exercisable at the date
        of grant.  In all cases, the shares acquired upon exercise are subject
        to repurchase by the granting corporation at the exercise price if the
        optionee ceases to be employed by such corporation or any other Thermo
        Electron company. The granting corporation may exercise its repurchase
        rights within six months after the termination of the optionee's
        employment.  For publicly traded companies, the repurchase rights
        generally lapse ratably over a five- to ten-year period, depending on
        the option term, which may vary from seven to twelve years, provided
        that the optionee continues to be employed by the Corporation or
        another Thermo Electron company.  The granting corporation may permit
        the holders of options to exercise options and to satisfy tax
        withholding obligations by surrendering shares equal in fair market
        value to the exercise price or withholding obligation.

   (2)  The amounts shown on this table represent hypothetical gains that
        could be achieved for the respective options if exercised at the end
        of the option term.  These gains are based on assumed rates of stock
        appreciation of 5% and 10% compounded annually from the date the
        respective options were granted to their expiration date.  The gains
        shown are net of the option exercise price, but do not include
        deductions for taxes or other expenses associated with the exercise.
        Actual gains, if any, on stock option exercises will depend on the
        future performance of the common stock of the applicable corporation,
PAGE
<PAGE>


        the optionee's continued employment through the option period and the
        date on which the options are exercised.  

   (3)  All of the options reported in the table were granted under stock
        option plans maintained by Thermo Electron or its subsidiaries as part
        of Thermo Electron's compensation program and accordingly are reported
        as a percentage of total options granted to employees of Thermo
        Electron and its subsidiaries. 


   Stock Options Exercised During Fiscal 1997 and Fiscal Year-End Option
   Values
        The following table reports certain information regarding stock option
   exercises during fiscal 1997 and outstanding stock options held at the end
   of fiscal 1997 by the Corporation's chief executive officer and the other
   named executive officers. No stock appreciation rights were exercised or
   were outstanding during fiscal 1997.



<TABLE>





        Aggregated Option Exercises In Fiscal 1997 And Fiscal 1997 Year-End Option Values


                                                    Number of
                                                    Unexercised
                                                    Options at Fiscal  Value of
                             Shares                 Year-End           Unexercised
                             Acquired   Value       (Exercisable/      In-the-Money
                               on
Name           Company       Exercise   Realized(1) Unexercisable) (2) Options
- ----           -------       --------   --------    ------------------ -------
<S>            <C>           <C>        <C>         <C>                <C>      

John P.        Thermo         --             --      215,000 /-- (4)   $34,075 /--
Appleton (3)    TerraTech

               Thermo         --             --      63,000  /--       $12,285 /--
                Remediation


Jeffrey L.     Thermo         --             --      63,000  /-- (5)   $74,785 /--
Powell          TerraTech

               Thermo         --             --     111,000  /--       $18,720 /--
                Remediation

               Thermo 
                Electron     5,062     $126,955      34,312  /-- (6)   $470,330 /-- 

               Thermo         --             --      2,000   /--            $0 /--
                BioAnalysis

               Thermo         --             --      2,000   /--            $0 /--
                Fibergen

               Thermo         --             --      4,500  /--        $32,625 /--
                Fibertek

               ThermoLase     --             --      5,000  /--             $0 /--

               ThermoLyte     --             --         --  /2,000          -- /$0  (7)

               Thermo Optek   --             --      6,000  /--         $3,000 /--

PAGE
<PAGE>

               ThermoQuest    --             --      6,000  /--         $9,000 /--


               Thermo         --             --      2,000  /--             $0 /--
                Sentron

               Trex Medical   --             --      4,000  /--         $2,500 /--

Emil C.
Herkert        Thermo     62,500       $697,975    187,500  /--     $1,695,938 /--
                TerraTech

               Thermo         --             --     37,800  /-- (8)   $286,763 /--
                Electron



</TABLE>



   (1)  Amounts shown in this column do not necessarily represent actual value
        realized from the sale of the shares acquired upon exercise of the
        option because in many cases the shares are not sold on exercise but
        continue to be held by the executive officer exercising the option.
        The amounts shown represent the difference between the option exercise
        price and the market price on the date of exercise, which is the
        amount that would have been realized if the shares had been sold
        immediately upon exercise.

   (2)  All of the options reported outstanding at the end of the fiscal year
        are immediately exercisable as of fiscal year-end, except options to
        purchase the common stock of ThermoLyte Corporation, which are not
        exercisable until the earlier of (i) 90 days after the effective date
        of  the registration of that company's common stock under Section 12
        of the Securities Exchange Act of 1934 and (ii) nine years from the
        grant date.  In all cases, the shares acquired upon exercise are
        subject to repurchase by the granting corporation at the exercise
        price if the optionee ceases to be employed by such corporation or any
        other Thermo Electron company. The granting corporation may exercise
        its repurchase rights within six months after the termination of the
        optionee's employment.  For publicly traded companies, the repurchase
        rights generally lapse ratably over a five- to ten-year period,
        depending on the option term, which may vary from seven to twelve
        years, provided that the optionee continues to be employed by the
        Corporation or another Thermo Electron company.  For companies whose
        shares are not publicly traded, the repurchase rights lapse in their
        entiety on the ninth anniversary of the grant date.

   (3)  Dr. Appleton has served as a vice president of Thermo Electron since
        1975 and has been granted options to purchase shares of the common
        stock of Thermo Electron and certain of its subsidiaries other than
        the Corporation from time to time by Thermo Electron or such other
        subsidiaries. These options are not reported here as they were granted
        as compensation for service to other Thermo Electron companies in
        capacities other than in his capacity as the chief executive officer
        of the Corporation.
PAGE
<PAGE>



   (4)  In addition to the terms described in footnote (1) above, 60,000 of
        the shares acquired upon exercise of these options are restricted from
        resale until Dr. Appleton's retirement.

   (5)  Of these options awarded to Mr. Powell, options to purchase 15,000
        shares are subject to the following terms in addition to those
        described in footnote (1):  in the event of the optionee's voluntary
        resignation or discharge for cause prior to February 8, 1998, all of
        the shares acquired upon exercise of these options are subject to
        repurchase by the Corporation at the exercise price.  In addition, all
        shares acquired upon the exercise of these options are subject to
        restrictions on resale until February 8, 1998.

   (6)  Options to purchase 22,500 shares of the common stock of Thermo
        Electron granted to Mr. Powell are subject to the same terms as
        described in footnote (1), except that the repurchase rights of the
        granting corporation generally do not lapse until the tenth
        anniversary of the grant date.  In the event of the employee's death
        or involuntary termination prior to the tenth anniversary of the grant
        date, the repurchase rights of the granting corporation shall be
        deemed to lapse ratably over a five-year period commencing with the
        fifth anniversary of the grant date.

   (7)  No public market existed for the shares underlying these options as of
        March 28, 1997. Accordingly, no value in excess of exercise price has
        been attributed to these options.

   (8)  Options to purchase 22,500 shares of the common stock of Thermo
        Electron granted to Mr. Herkert are subject to the same terms as
        described in footnote (1), except that the repurchase rights of the
        granting corporation generally do not lapse until the tenth
        anniversary of the grant date.  In fiscal 1997, the Human Resources
        Committee of the Board of Directors accelerated the vesting of 1,800
        shares.


   Severance Agreements

        Thermo Electron has entered into severance agreements with several key
   employees, including Dr. Appleton.  These agreements provide severance
   benefits if there is a change in control of Thermo Electron that is not
   approved by the Board of Directors of Thermo Electron and the employee's
   employment with Thermo Electron or one of its majority-owned subsidiaries
   is terminated, for whatever reason, within one year thereafter.  For
   purposes of the severance agreements, a change of control exists upon (i)
   the acquisition of 50% or more of the outstanding common stock of Thermo
   Electron by any person without the prior approval of the board of directors
   of Thermo Electron, (ii) the failure of the board of directors of Thermo
   Electron, within two years after any contested election of directors or
   tender or exchange offer not approved by the board of directors, to be
   constituted of a majority of directors holding office prior to such event
   or (iii) any other event that the board of directors of Thermo Electron
   determines constitutes an effective change in control of Thermo Electron.
   The benefit under these agreements is stated as an initial percentage which
   was established by the Board of Directors of Thermo Electron in 1983 and is
   generally based upon the employee's age and length of service with Thermo
   Electron at the time of severance.  Benefits are to be paid over a
   five-year period.  The benefit to be paid in the first year is determined
   by applying this percentage to the employee's highest annual total

PAGE
<PAGE>


   remuneration in any 12-month period during the preceding three years.  This
   benefit is reduced by 10% in each of the succeeding four years in which
   benefits are paid.  The initial percentage to be so applied to Dr. Appleton
   is 40.1%.  Assuming severance benefits would have been payable under such
   agreements as of March 29, 1997, Dr. Appleton would have received
   approximately $119,906 in the first year thereof from Thermo Electron.
PAGE
<PAGE>


                   COMMITTEE REPORT ON EXECUTIVE COMPENSATION

   Executive Compensation

        All decisions on compensation for the Corporation's executive officers
   are made by the Human Resources Committee of the Board of Directors (the
   "Committee").  In reviewing and establishing total cash compensation and
   stock-based compensation for executives, the Committee follows guidelines
   established by the human resources committee of the board of directors of
   its parent corporation, Thermo Electron. The executive compensation program
   presently consists of annual base salary ("salary"), short-term incentives
   in the form of annual cash bonuses, and long-term incentives in the form of
   stock options. 

        The Committee believes that the compensation of executive officers
   should reflect the scope of their responsibilities, the success of the
   Corporation, and the contributions of each executive to that success.  In
   addition, the Committee believes that base salaries should approximate the
   mid-point of competitive salaries derived from market surveys and that
   short-term and long-term incentive compensation should reflect the
   performance of the Corporation and the contributions of each executive.

        External competitiveness is an important element of the Committee's
   compensation policy.  The competitiveness of the Corporation's compensation
   for its executives is assessed by comparing it to market data provided by
   its compensation consultant and by participating in annual executive
   compensation surveys, primarily "Project 777," an executive compensation
   survey prepared by Management Compensation Services, a division of Hewitt
   Associates.  The majority of firms represented in the Project 777 survey
   are included in the Standard & Poor's 500 Index, but do not necessarily
   correspond to the companies included in the Corporation's peer group index.

        Principles of internal equity are also central to the Committee's
   compensation policies.  Compensation considered for the Corporation's
   officers, whether cash or stock-based incentives, is also evaluated by
   comparing it to compensation of other executives within the Thermo Electron
   organ ization with comparable levels of responsibility for comparably
   sized business units.

        The process for determining each of these elements for the
   Corporation's executive officers is outlined below.

        Base Salary

        Base salaries are set to approximate the mid-point of competitive
   salaries for similar organizations of comparable size and complexity to the
   Corporation.  Executive salaries are adjusted gradually over time and only
   as necessary to meet this objective.  Increases in base salary may be
   moderated by other considerations, such as geographic or regional market
   data, industry trends or internal fairness within the Corporation and
   Thermo Electron.  It is the Committee's intention that over time the base
   salaries for the chief executive officer and the Corporation's other named
   executive officers will approach the mid-point of competitive data.  The
   salary increases in fiscal 1997 for the chief executive officer and the
   other named executive officers generally reflect this practice of gradual
   increases and moderation.

        Cash Bonus

        The Committee establishes a median potential bonus for each executive
   by using the market data on total cash compensation from the same executive
   compensation surveys as used to determine salaries.  Specifically, the
   median potential bonus plus the salary of an executive officer is
PAGE
<PAGE>


   approximately equal to the mid-point of competitive total cash compensation
   for a similar position and level of responsibility in businesses having
   comparable sales and complexity to the Corporation. The actual bonus
   awarded to an executive officer may range from zero to three times the
   median potential bonus. The value within the range (the bonus multiplier)
   is determined at the end of each year by the Committee in its discretion.
   The Committee exercises its discretion by evaluating each executive's
   performance using a methodology developed by its parent corporation, Thermo
   Electron, and applied throughout the Thermo Electron organization.  The
   methodology incorporates measures of operating returns which are designed
   to measure profitability and contributions to shareholder value, and are
   measures of corporate and divisional performance that are evaluated using
   graphs developed by Thermo Electron intended to reward performance that is
   perceived as above average and to penalize performance that is perceived as
   below average.  The measures of operating returns used in the Committee's
   determinations in fiscal 1997 measured return on net assets, growth in
   income, and return on sales, and the Committee's determinations also
   included a subjective evaluation of the contributions of each executive
   thatare not captured by operating measures but are considered important to
   the creation of long-term value for the Stockholders.  These measures of
   achievements are not financial targets that are met, not met or exceeded.
   The relative weighting of the operating measures and subjective evaluation
   varies among the executives, depending on their roles and responsibilities
   with the organization.

        The bonuses for named executive officers approved by the Committee
   with respect to fiscal 1997 performance in each instance exceeded the
   median potential bonus, except in the case of one executive officer.
        Stock Option Program

        The primary goal of the Corporation is to excel in the creation of
   long-term value for the Stockholders. The principal incentive tool used to
   achieve this goal is the periodic award to key employees of options to
   purchase common stock of the Corporation and other Thermo Electron
   companies.

        The Committee and management believe that awards of stock options to
   purchase the shares of both the Corporation and other companies within the
   Thermo Electron group of companies accomplish many objectives. The grant of
   options to key employees encourages equity ownership in the Corporation,
   and closely aligns management's interests to the interests of all the
   Stockholders. The emphasis on stock options also results in management's
   compensation being closely linked to stock performance. In addition,
   because they are subject to vesting periods of varying durations and to
   forfeiture if the employee leaves the Corporation prematurely, stock
   options are an incentive for key employees to remain with the Corporation
   long-term. The Committee believes stock option awards in its subsidiary,
   Thermo Remediation, and its parent corporation, Thermo Electron, and the
   other majority-owned subsidiaries of Thermo Electron, are important tools
   in providing incentives for performance within the entire organization.

        In determining awards, the Committee considers the average annual
   value of all options to purchase shares of the Corporation and other
   companies within the Thermo Electron organization that vest in the next
   five years.  (Values are established using a modified Black-Scholes option
   pricing model.)  As a guideline, the Committee strives to maintain the
   aggregate amount of net awards to purchase shares of Common Stock to all
   employees over a five-year period below 12% of the Corporation's
   outstanding Common Stock, although other factors such as unusual
PAGE
<PAGE>


   transactions, acquisitions and standards for awards of comparably situated
   companies may affect the number of awards granted.

        Awards are not made annually in conjunction with the annual review of
   cash compensation, but are made periodically.  The Committee considers
   total compensation of executives, actual and anticipated contributions of
   each executive (which includes a subjective assessment by the Committee of
   the value of the executive's future potential within the organization), as
   well as the value of previously awarded options as described above, in
   determining option awards.  The option awards made to named executives
   officers in fiscal 1997 with respect to the common stock of the
   Corporation's parent company, Thermo Electron, and its subsidiaries, were
   made as part of Thermo Electron's overall stock option program and were
   determined by the human resources committee of the board of directors of
   the granting company using a similar analysis.


   Stock Ownership Policies

        During fiscal 1997, the Committee established a stock holding policy
   for executive officers of the Corporation.  The stock holding policy
   specifies an appropriate level of ownership of the Corporation's Common
   Stock as a multiple of the officer's compensation.  For the chief executive
   officer, the multiple is one times his base salary and reference bonus for
   the fiscal year.  For all other officers, the multiple is one times the
   officer's base salary.  The Committee deemed it appropriate to permit
   officers to achieve these ownership levels over a three-year period.

        In order to assist officers in complying with the policy, the
   Committee also adopted a stock holding assistance plan under which the
   Corporation is authorized to make interest-free loans to officers to enable
   them to purchase shares of the Common Stock in the open market.  The loans
   are required to be repaid upon the earlier of demand or the fifth
   anniversary of the date of the loan, unless otherwise authorized by the
   Committee.  No loans were outstanding under this program in fiscal 1997.
   See "Relationship with Affiliates - Stock Holding Assistance Plan."

        The Committee also adopted a policy requiring its executive officers
   to hold shares of the Corporation's Common Stock acquired upon the exercise
   of stock options granted by the Corporation.  Under this policy, executive
    officers are required to hold one-half of their net option exercises over
   a period of five years.  The net option exercise is determined by
   calculating the number of shares acquired upon exercise of a stock option,
   after deducting the number of shares that could have been traded to
   exercise the option and the number of shares that could have been
   surrendered to satisfy tax withholding obligations attributable to exercise
   of the option. 


   Policy on Deductibility of Compensation

        The Committee has also considered the executives application of
   Section 162(m) of the Internal Revenue Code to the Corporation's
   compensation practices.  Section 162(m) limits the tax deduction available
   to public companies for annual compensation paid to senior executives in
   excess of $1 million, unless the compensation qualifies as "performance
   based" or is otherwise exempt from Section 162(m).  The annual cash
   compensation paid to individual executives does not approach the $1 million
   threshold, and it is believed that the stock incentive plans of the
   Corporation qualify as "performance based."  Therefore, the Committee does
   not believe any further action is necessary in order to comply with Section
PAGE
<PAGE>


   162(m).  From time to time, the Committee will reexamine the Corporation's
   compensation practices and the effect of Section 162(m).


   CEO Compensation

        Cash compensation for Dr. Appleton is reviewed by both the Committee
   and the human resources committee of the board of directors of Thermo
   Electron, due to his responsibilities as both the Corporation's chief
   executive officer and as a vice president of Thermo Electron, the
   Corporation's parent company.  Each committee evaluates Dr. Appleton's
   performance and proposed compensation using a process similar to that used
   for the other executive officers of the Corporation.  At the Thermo
   Electron level, Dr. Appleton is evaluated on his performance related to the
   Corporation as well as other operating units of Thermo Electron for which
   he is responsible, weighted in accordance with the amount of time and
   effort devoted to each operation.  The Corporation's Committee then reviews
   the analysis and determinations of the Thermo Electron committee, makes an
   independent assessment of Dr. Appleton's performance as it relates to the
   Corporation using criteria similar to those used for the other executive
   officers of the Corporation, and then agrees to an appropriate allocation
   of Dr. Appleton's compensation to be paid by the Corporation.  

        In December 1996, the Committee conducted its review of Dr. Appleton's
    proposed salary for calendar 1997 and bonus for calendar 1996 performance.
   The Committee concurred in the recommendations made by the Thermo Electron
   committee and agreed to an allocation of 70% of Dr. Appleton's total cash
   compensation for calendar year 1996 to the Corporation, based on his
   relative responsibilities at the Corporation and Thermo Electron.  An
   additional 20% of Dr. Appleton's total cash compensation for 1996 was
   allocated to the Corporation's majority-owned subsidiary, Thermo
   Remediation Inc., for his services as its chief executive officer.


                         Mr. Donald E. Noble (Chairman)
                            Mr. Polyvios C. Vintiadis
PAGE
<PAGE>


                          COMPARATIVE PERFORMANCE GRAPH

        The Securities and Exchange Commission requires that the Corporation
   include in this proxy statement a line-graph presentation comparing
   cumulative, five-year shareholder returns for the Corporation's Common
   Stock with a broad-based market index and either a nationally recognized
   industry standard or an index of peer companies selected by the
   Corporation.  The Corporation has compared its performance with the
   American Stock Exchange Market Value Index and a peer group of companies
   consisting of Ecology & Environmental Inc., Fluor Daniel GTI, Inc.
   (formerly Groundwater Technology Inc.), International Technology Inc.,
   Safety Kleen Corp. and Roy F. Weston Inc. 

       Comparison of 1992-1997 Total Return Among Thermo TerraTech Inc.,
                 the American Stock Exchange Market Value Index
                        and the Corporation's Peer Group


                              [GRAPH APPEARS HERE]


                  03/27/92 04/01/93 03/31/94 03/31/95  03/29/96 03/27/97

        TTT       100      112      103      106       162      108

        AMEX      100      107      112      118       145      147

        PEER GROUP100      92       63       73        63       74

        The total return for the Corporation's Common Stock (TTT), the
   American Stock Exchange Market Value Index (AMEX) and the Corporation's
   Peer Group (PEER GROUP) assumes the reinvestment of dividends, although
   dividends have not been declared on the Corporation's Common Stock.  The
   American Stock Exchange Market Value Index tracks the aggregate performance
   of equity securities of companies listed on the American Stock Exchange
   ("AMEX"). The Corporation's Common Stock is traded on the AMEX under the
   ticker symbol "TTT."
PAGE
<PAGE>


                          RELATIONSHIP WITH AFFILIATES

        Thermo Electron has adopted a strategy of selling a minority  interest
   in subsidiary companies to  outside investors as an  important tool in  its
   future development. As part of  this strategy, the Corporation has  created
   Thermo Remediation as a majority-owned publicly held subsidiary.  From time
   to  time,  Thermo   Electron  and  its   subsidiaries  will  create   other
   majority-owned  subsidiaries  as  part  of  its  spinout  strategy.    (The
   Corporation and the other  majority-owned Thermo Electron subsidiaries  are
   hereinafter referred to as the "Thermo Subsidiaries".)
    
        Thermo Electron and each of the Thermo Subsidiaries recognize that the
   benefits  and  support  that  derive  from  their  mutual  affiliation  are
   essential elements  of their  individual performance.  Accordingly,  Thermo
   Electron and  each  of the  Thermo  Subsidiaries have  adopted  the  Thermo
   Electron Corporate Charter (the "Charter") to define the relationships  and
   delineate the nature of such  cooperation among themselves. The purpose  of
   the Charter  is  to  ensure  that  (1)  all  of  the  companies  and  their
   stockholders are treated consistently and fairly, (2) the scope and  nature
   of   the   cooperation   among   the   companies,   and   each    company's
   responsibilities, are adequately  defined, (3) each  company has access  to
   the  combined  resources  and   financial,  managerial  and   technological
   strengths  of  the  others,  and   (4)  Thermo  Electron  and  the   Thermo
   Subsidiaries, in the aggregate, are able to obtain the most favorable terms
   from outside parties. 
    
        To achieve these ends, the  Charter identifies the general  principles
   to be followed by the companies, addresses the role and responsibilities of
   the management of each company, provides for the sharing of group resources
   by the companies and provides  for centralized administrative, banking  and
   credit services to be performed  by Thermo Electron. The services  provided
   by Thermo  Electron  include  collecting and  managing  cash  generated  by
   members,  coordinating  the  access  of  Thermo  Electron  and  the  Thermo
   Subsidiaries (the "Thermo Group")  to external financing sources,  ensuring
   compliance  with  external  financial  covenants  and  internal   financial
   policies, assisting in the formulation of long-range planning and providing
   other banking and credit services. Pursuant to the Charter, Thermo Electron
   may also provide  guarantees of  debt or  other obligations  of the  Thermo
   Subsidiaries or may obtain external financing  at the parent level for  the
   benefit of  the  Thermo  Subsidiaries. In  certain  instances,  the  Thermo
   Subsidiaries  may  provide  credit  support  to,  or  on  behalf  of,   the
   consolidated  entity  or  may  obtain  financing  directly  from   external
   financing sources. Under  the Charter, Thermo  Electron is responsible  for
   determining that the Thermo Group remains in compliance with all  covenants
   imposed by  external  financing  sources, including  covenants  related  to
   borrowings of Thermo Electron or other members of the Thermo Group, and for
   apportioning such constraints within the Thermo Group. In addition,  Thermo
   Electron establishes certain internal policies and procedures applicable to
   members of the Thermo  Group. The cost of  the services provided by  Thermo
   Electron to the  Thermo Subsidiaries  is covered  under existing  corporate
   services  agreements  between  Thermo  Electron  and  each  of  the  Thermo
   Subsidiaries. 
    
        The Charter presently provides that it shall continue in effect so
   long as Thermo Electron and at least one Thermo Subsidiary participate. The
   Charter may be amended at any time by agreement of the participants. Any
   Thermo Subsidiary, including the Corporation, can withdraw from
   participation in the Charter upon 30 days' prior notice. In addition,
   Thermo Electron may terminate a subsidiary's participation in the Charter
   in the event the subsidiary ceases to be controlled by Thermo Electron or
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<PAGE>


   ceases to comply with the Charter or the policies and procedures applicable
   to the Thermo Group.  A withdrawal from the Charter automatically
   terminates the corporate services agreement and tax allocation agreement
   (if any) in effect between the withdrawing company and Thermo Electron. The
   withdrawal from participation does not terminate outstanding commitments to
   third parties made by the withdrawing company, or by Thermo Electron or
   other members of the Thermo Group, prior to the withdrawal. However, a
   withdrawing company is required to continue to comply with all policies and
   procedures applicable to the Thermo Group and to provide certain
   administrative functions mandated by Thermo Electron so long as the
   withdrawing company is controlled by or affiliated with Thermo Electron. 
    
        As provided in the Charter, the Corporation and Thermo Electron have
   entered into a Corporate Services Agreement (the "Services Agreement")
   under which Thermo Electron's corporate staff provides certain
   administrative services, including certain legal advice and services, risk
   management, certain employee benefit administration, tax advice and
   preparation of tax returns, centralized cash management and financial and
   other services to the Corporation.  The Corporation was assessed an annual
   fee equal to 1.0% of the Corporation's revenues for these services for
   fiscal 1997.  The fee is reviewed annually and may be changed by mutual
   agreement of the Corporation and Thermo Electron.  During fiscal 1997,
   Thermo Electron assessed the Corporation $2,785,000 in fees under the
   Services Agreement.  Management believes that the charges under the
   Services Agreement are reasonable and that the terms of the Services
   Agreement are fair to the Corporation.  For items such as employee benefit
   plans, insurance coverage and other identifiable costs, Thermo Electron
   charges the Corporation based on charges attributable to the Corporation.
   The Services Agreement automatically renews for successive one-year terms,
   unless canceled by the Corporation upon 30 days' prior notice.  In
   addition, the Services Agreement terminates automatically in the event the
   Corporation ceases to be a member of the Thermo Group or ceases to be a
   participant in the Charter. In the event of a termination of the Services
   Agreement, the Corporation will be required to pay a termination fee equal
   to the fee that was paid by the Corporation for services under the Services
   Agreement for the nine-month period prior to termination. Following
   termination, Thermo Electron may provide certain administrative services on
   an as-requested basis by the Corporation or as required in order to meet
   the Corporation's obligations under Thermo Electron's policies and
   procedures.  Thermo Electron will charge the Corporation a fee equal to the
   market rate for comparable services if such services are provided to the
   Corporation following termination.

        As  of  March  29,  1997,   $59,781,000  of  the  Corporation's   cash
   equivalents were invested in a  repurchase agreement with Thermo  Electron.
   Under this agreement, the Corporation in effect lends excess cash to Thermo
   Electron, which Thermo Electron collateralizes with investments principally
   consisting of  corporate notes,  U.S. government  agency securities,  money
   market funds,  commercial paper  and other  marketable securities,  in  the
   amount of at least 103% of such obligation. The Corporation's funds subject
   to the  repurchase  agreement are  readily  convertible into  cash  by  the
   Corporation and have  a maturity of  three months or  less. The  repurchase
   agreement earns a rate based on the 90-day Commercial Paper Composite  Rate
   plus 25 basis points, set at the beginning of each quarter.

        The Corporation leases or subleases three office and manufacturing
   facilities from Thermo Electron.  The total rental payments made to Thermo
   Electron during fiscal year 1997 under these agreements was $553,000.
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        The Corporation and Thermo Electron entered into a development
   agreement under which Thermo Electron agreed to fund up to $4,000,000 of
   the direct and indirect costs of the Corporation's development of
   soil-remediation centers.  In exchange for this funding, the Corporation
   granted Thermo Electron a royalty equal to approximately 3% of net revenues
   from soil-remediation services performed at the centers developed under
   this agreement.  The royalty payments may cease if the amounts paid by the
   Corporation yield a certain internal rate of return to Thermo Electron on
   the funds advanced to the Corporation under this agreement.  The
   Corporation paid Thermo Electron royalties of $186,000 in fiscal 1997.

        From time  to time,  the Corporation  may transact  business with  the
   other companies in the  Thermo Group.  In  fiscal 1997, these  transactions
   included the Corporation's October 1996 acquisition of Metal Treating Inc.,
   a provider of heat-treating services, from Thermo Electron in exchange  for
   $1,600,000 in cash.

        As of  March  29,  1997,  the  Corporation  owed  Thermo  Electron  an
   aggregate of $40,926,000.

        Thermo  Electron  owned  approximately  85.9% of  the  Corporation's
   outstanding Common Stock on June 28, 1997.

   Stock Holding Assistance Plan

        In fiscal 1997, the Corporation adopted a stock holding policy which
   requires its executive officers to acquire and hold a minimum number of
   shares of Common Stock.  In order to assist the executive officers in
   complying with the policy, the Corporation also adopted a stock holding
   assistance plan under which it may make interest-free loans to certain key
   employees, including its executive officers, to enable such employees to
   purchase the Common Stock in the open market.  Loans will be repaid upon
   the earlier of demand or the fifth anniversary of the date of the loan,
   unless otherwise authorized by the Human Resources Committee of the Board
   of Directors.  No such loans were outstanding in fiscal 1997.


                                -- PROPOSAL 2 --

        PROPOSAL TO EXTEND THE TERM OF THE EMPLOYEES' STOCK PURCHASE PLAN

        The Board of Directors has recommended that the Stockholders approved
   an amendment to the Corporation's employees' stock purchase plan (the
   "Stock Purchase Plan") that would extend the term of the plan for an
   additional ten years to November 2, 2005.  The material features of the
   Stock Purchase Plan are described below.  If the plan amendment is not
   approved by the Stockholders at this meeting, the Stock Purchase Plan will
   be discontinued effective as of November 1, 1997.  The Board of Directors
   believes that the Stock Purchase Plan is an important incentive in
   attracting and retaining key personnel, in motivating individuals to
   contribute significantly to the Corporation's future growth and success,
   and in aligning the long-term interest of these individuals with that of
   the Corporation's Stockholders.  For these reasons, the Board of Directors
   has acted to continue the plan and is recommending the extension to the
   Stockholders for approval.  The following is a summary of the terms of the
   Stock Purchase Plan.


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<PAGE>

   Summary of the Stock Purchase Plan

        Participation; Administration

        All full-time employees and part-time employees working at least 20
   hours per week and who have been employed for at least six months by the
   Corporation are eligible to participate in the Stock Purchase Plan, unless
   they own more than 5% of the Common Stock of the Corporation.  For purposes
   of determining the term of employment, employees are credited with years of
   continued employment with Thermo Electron or its other subsidiaries
   immediately prior to joining the Corporation.  Options to purchase shares
   of Common Stock of the Corporation may be granted from time to time at the
   discretion of the Board of Directors, which also determines the date upon
   which such options are exercisable.  At the present time, only employees
   based in the United States are eligible to participate in the Stock
   Purchase Plan.  The number of employees potentially eligible to participate
   in the Stock Purchase Plan is approximately 2,367 persons.

        Contributions

        A participating employee may purchase stock only through payroll
   deductions, which may not exceed 10% of the employee's gross salary or
   wages during the year.  Employees are allowed to decrease, but not increase
   the percentage of wages contributed once during the plan year.  An employee
   may suspend his or her contributions, but then is not permitted to
   contribute again for the remainder of the plan year.

        Terms of Options

        The exercise price is fixed on the grant date at the start of the plan
   year and is 95% of the fair market value for such stock on such date.  On
   the exercise date, participants may elect to use their accumulated payroll
   deductions to purchase shares at the exercise price.  Participants must
   agree not to resell  the shares so purchased for a period of six months
   following the exercise date.  The options are nontransferable, and except
   in the case of death of the employee, may not be exercised if the employee
   is not still employed by the Corporation at the exercise date.  If an
   employee dies, his or her beneficiary may withdraw the accumulated payroll
   deduction or use such deductions to purchase shares on the exercise date.
   A participant may elect to discontinue participation at any time prior to
   the exercise date and to have his or her accumulated payroll deduction
   refunded together with interest on such amount as fixed by the Board of
   Directors from time to time.

        Shares Subject to the Stock Purchase Plan

        The number of shares that are currently available for issuance under
   the Stock Purchase Plan is 56,166 shares of the Corporation's Common Stock,
   subject to adjustment for stock splits and similar events.  The proceeds
   received by the Corporation from the exercise of options granted under the
   Stock Purchase Plan will be used for the general purposes of the
   Corporation.  Shares issued under the Stock Purchase Plan may be authorized
   but unissued or shares reacquired by the Corporation and held in its
   treasury.

        Amendment and Termination

        The Stock Purchase Plan shall remain in full force and effect until
   suspended or discontinued by the Board of Directors.  The Board of
   Directors may at any time or times amend or review the Stock Purchase Plan
   for any purpose which may be permitted by law, or may at any time terminate
   the Stock Purchase Plan, provided that no amendment that is not approved by
   the Stockholders shall be effective if it would cause the Stock Purchase
   Plan to fail to satisfy the requirements of Rule 16b-3 (or any successor
   rule) of the Securities Exchange Act of 1934, as amended.  No amendment of
   the Stock Purchase Plan may adversely affect the rights of any recipient of
   any option previously granted without such recipient's consent.


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        Term of the Stock Purchase Plan

        The Stock Purchase Plan will expire on November 2, 2005, provided that
   the extension of the term of the Stock Purchase Plan is approved by the
   Stockholders at this Meeting.


   Federal Income Tax Aspects

        Federal income tax is not imposed upon an employee in the year an
   option is granted or the year the shares are purchased pursuant to the
   exercise of the option granted under the Stock Purchase Plan.  Federal
   income tax generally is imposed upon an employee when he or she sells or
   otherwise disposes of the shares acquired pursuant to the Stock Purchase
   Plan.  When an employee sells or disposes of the shares, if such sale or
   disposition occurs more than two years from the grant date and more than
   one year from the exercise date, then Federal income tax assessed at
   ordinary rates will be imposed upon the amount by which the fair market
   value of the shares on the date of grant or disposition, whichever is less,
   exceeds the amount paid for the shares.  In addition, the difference
   between the amount received by the employee at the time of sale and the
   employee's tax basis in the shares, which is equal to the amount paid on
   exercise of the option plus the amount recognized as ordinary income, will
   be recognized as a capital gain or loss.  The Corporation will not be
   allowed a deduction under these circumstances for Federal income tax
   purposes.  If the employee sells or disposes of the shares sooner than two
   years from the grant date or one year from the exercise date, then the
   employee's entire gain (the difference between the fair market value at
   disposition and the amount paid for the shares) will be taxed as ordinary
   income, and the Corporation would be entitled to a deduction equal to that
   amount.

        The closing price per share on the American Stock Exchange of the
   Common Stock on June 27, 1997 was $10.938.


   Recommendation

        The Board of Directors believes that the extension of the term of the
   Stock Purchase Plan is important for the Corporation to attract and retain
   key employees and to be able to continue to offer them the opportunity to
   participate in the ownership and growth of the Corporation through an
   employees stock purchase plan.  In addition,  the Board of Directors
   believes the Stock Purchase Plan is in the best interest of the Corporation
   and its Stockholders and recommends that the Stockholders vote FOR the
   approval of the extension of the term of the Stock Purchase Plan.  Thermo
   Electron, which owned of record approximately 85.9% of the outstanding
   voting stock of the Corporation on June 28, 1997 has indicated its
   intention to vote for the proposal.

                  APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS

        The Board of Directors has appointed Arthur Andersen LLP as
   independent public accountants for fiscal 1998. Arthur Andersen LLP has
   acted as independent public accountants for the Corporation since its
   inception in 1986.  Representatives of that firm are expected to be present
   at the Meeting, will have the opportunity to make a statement if they
   desire to do so and will be available to respond to questions. The Board of
   Directors has established an Audit Committee, presently consisting of two
   outside directors, the purpose of which is to review the scope and results
   of the audit.
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                                  OTHER ACTION

        Management is not aware at this time of any other matters that will be
   presented for action at the Meeting. Should any such matters be  presented,
   the proxies grant power to the proxy holders to vote shares represented  by
   the proxies in the discretion of such proxy holders.

                              STOCKHOLDER PROPOSALS

        Proposals of Stockholders intended to be presented at the 1998  Annual
   Meeting of the  Stockholders of  the Corporation  must be  received by  the
   Corporation for inclusion in the proxy statement and form of proxy relating
   to that meeting no later than April 24, 1998.

                             SOLICITATION STATEMENT

        The cost of this solicitation of proxies will be borne by the
   Corporation. Solicitation will be made primarily by mail, but regular
   employees of the Corporation may solicit proxies personally, by telephone
   or telegram. Brokers, nominees, custodians and fiduciaries are requested to
   forward solicitation materials to obtain voting instructions from
   beneficial owners of stock registered in their names, and the Corporation
   will reimburse such parties for their reasonable charges and expenses in
   connection therewith.


   Waltham, Massachusetts



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