THERMO TERRATECH INC
10-K, 1999-06-10
TESTING LABORATORIES
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
              ----------------------------------------------------

                                    FORM 10-K

(mark one)
[ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities
      Exchange Act of 1934 for the fiscal year ended April 3, 1999

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

                          Commission file number 1-9549

                              THERMO TERRATECH INC.
             (Exact name of Registrant as specified in its charter)

Delaware                                                        04-2925807
(State or other jurisdiction of       (I.R.S. Employer Identification No.)
 incorporation or organization)

81 Wyman Street, P.O. Box 9046
Waltham, Massachusetts                                           02454-9046
(Address of principal executive offices)                         (Zip Code)

       Registrant's telephone number, including area code: (781) 622-1000

           Securities registered pursuant to Section 12(b) of the Act:

    Title of each class               Name of each exchange on which registered
 Common Stock, $.10 par value                  American Stock Exchange

           Securities registered pursuant to Section 12(g) of the Act:
                                      None

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 and (2) has been subject to the filing requirements for
at least the past 90 days. Yes [ X ] No [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference into Part III of this Form 10-K or any
amendment to this Form 10-K. [ ]

The aggregate market value of the voting stock held by nonaffiliates of the
Registrant as of April 30, 1999, was approximately $9,493,000.

As of April 30, 1999, the Registrant had 19,049,354 shares of Common Stock
outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's Fiscal 1999 Annual Report to Shareholders for the
year ended April 3, 1999, are incorporated by reference into Parts I and II.

Portions of the Registrant's definitive Proxy Statement for the Annual Meeting
of Shareholders to be held on September 16, 1999, are incorporated by reference
into Part III.

<PAGE>


                                     PART I

Item 1.  Business

(a)   General Development of Business

     Thermo TerraTech Inc. (the Company or the Registrant)  provides  industrial
outsourcing services and manufacturing support encompassing a broad range of
specializations. The Company operates in four segments: environmental-liability
management, engineering and design, laboratory testing, and metal treating.

      The Environmental-liability Management segment includes the Company's
majority-owned, publicly held ThermoRetec Corporation (formerly Thermo
Remediation Inc.) subsidiary, which is a national provider of
environmental-liability and resource-management services. Through a nationwide
network of offices, ThermoRetec offers these and related consulting services in
four areas: consulting and engineering, nuclear remediation, soil remediation,
and fluids recycling. As of April 3, 1999, the Company owns 70% of ThermoRetec's
outstanding common stock and holds a $2.7 million principal amount 3 7/8%
subordinated convertible note due 2000 issued by ThermoRetec, convertible into
shares of ThermoRetec common stock at a conversion price of $9.83 per share. The
Company's majority-owned Thermo EuroTech N.V. subsidiary, located in the
Netherlands, specializes in converting "off-spec" and contaminated petroleum
fluids into useable oil products. Thermo EuroTech also provides in-plant waste
management and recycling services through its Ireland-based Green Sunrise
Holdings Ltd. subsidiary. As of April 3, 1999, the Company owns 78% of Thermo
EuroTech's outstanding common stock.

      The Engineering and Design segment includes the Company's majority-owned,
publicly held The Randers Killam Group Inc. (formerly The Randers Group
Incorporated) subsidiary, which provides comprehensive engineering and
outsourcing services in four areas: water and wastewater treatment, process
engineering and construction, highway and bridge engineering, and infrastructure
engineering. As of April 3, 1999, the Company owns approximately 95% of Randers
Killam's outstanding common stock. This segment also includes the Company's
wholly owned Normandeau Associates Inc. subsidiary, which provides consulting
services that address natural resource management issues.

      The Company's wholly owned Thermo Analytical Inc. subsidiary, which
represents the Laboratory Testing segment, operates analytical laboratories that
provide environmental- and pharmaceutical-testing services, primarily to
commercial clients throughout the U.S.

      The Metal Treating segment performs metallurgical processing services
using thermal-treatment equipment at locations in California, Minnesota, and
Wisconsin.

      In May 1999, the Company announced the planned sale of several businesses
by its majority-owned subsidiaries. In connection with these proposed sales, the
Company expects to incur pretax charges totaling approximately $65 million,
primarily in the first quarter of fiscal 2000. Thermo EuroTech intends to sell
its used-oil processing operations, Randers Killam plans to sell three operating
units, and ThermoRetec plans to sell three soil-recycling facilities. For the
fiscal year ended April 3, 1999, revenues and operating loss from these
businesses totaled approximately $50 million and $0.1 million, respectively.

      The Company was incorporated on May 30, 1986, as an indirect, wholly owned
subsidiary of Thermo Electron Corporation. As of April 3, 1999, Thermo Electron
owned 16,605,831 shares of the Company's common stock, representing 87% of such
stock outstanding. Thermo Electron is a world leader in monitoring, analytical,
and biomedical instrumentation; biomedical products including heart-assist
devices, respiratory-care equipment, and mammography systems; and paper
recycling and papermaking equipment. Thermo Electron also develops
alternative-energy systems and clean fuels, provides a range of services
including industrial outsourcing and environmental-liability management, and
conducts research and development in advanced imaging, laser, and electronic
information-management technologies.


                                       2
<PAGE>

      Thermo Electron has from time to time repurchased shares of the Company's,
ThermoRetec's, Randers Killam's, and Thermo EuroTech's common stock in the open
market or in negotiated transactions. During fiscal 1999*, Thermo Electron
purchased 670,521 shares, 70,800 shares, and 474,000 shares of the Company's,
ThermoRetec's, and Thermo EuroTech's common stock, respectively, in the open
market and negotiated transactions for a total price of $3.4 million, $0.2
million, and $1.5 million, respectively.

      Thermo Electron has announced a proposed reorganization involving certain
of Thermo Electron's subsidiaries, including the Company. Under this plan, the
Company, ThermoRetec, and Randers Killam would be merged into Thermo Electron.
As a result, all three companies would become wholly owned subsidiaries of
Thermo Electron. The public shareholders of the Company, ThermoRetec, and
Randers Killam would receive common stock in Thermo Electron in exchange for
their shares. The completion of these transactions is subject to numerous
conditions, as outlined in Note 17 to Consolidated Financial Statements in the
Registrant's Fiscal 1999 Annual Report to Shareholders, which statements are
incorporated herein by reference.

Forward-looking Statements

      Forward-looking statements, within the meaning of Section 21E of the
Securities Exchange Act of 1934, are made throughout this Annual Report on Form
10-K. For this purpose, any statements contained herein that are not statements
of historical fact may be deemed to be forward-looking statements. Without
limiting the foregoing, the words "believes," "anticipates," "plans," "expects,"
"seeks," "estimates," and similar expressions are intended to identify
forward-looking statements. There are a number of important factors that could
cause the results of the Company to differ materially from those indicated by
such forward-looking statements, including those detailed under the heading
"Forward-looking Statements" in the Registrant's Fiscal 1999 Annual Report to
Shareholders, which statements are incorporated herein by reference.

(b)   Financial Information About Segments

      Financial information concerning the Company's segments is summarized in
Note 15 to Consolidated Financial Statements in the Registrant's Fiscal 1999
Annual Report to Shareholders, which information is incorporated herein by
reference.

(c)   Description of Business

      (i)  Principal Services and Products

Environmental-liability Management

      The Company provides environmental consulting and remediation construction
management to clients in the transportation, refining, chemical, wood-treating,
gas, and electric utility industries across the nation. The Company offers a
broad array of remedial solutions to help clients manage problems associated
with environmental compliance, resource management, and the remediation of
industrial sites contaminated with various wastes and residues. The Company
provides particular expertise in bioremediation and in managing wastes from
manufactured-gas plants, refineries, and railroad properties.

      The Company also performs cleanups of hazardous waste sites for government
and industry as a prime construction contractor and completes predesigned
remedial action contracts at sites containing hazardous, toxic, and radioactive
wastes. Under contracts with federal and state governments, and other public and
private sector clients, the Company also provides project management and
construction services for the remediation of hazardous and nonhazardous wastes.
Most of this contract work is obtained through a bid process, with the job being
awarded to the best qualified bidder.

- --------------------
*  References to fiscal 1999, 1998, and 1997 herein are for the fiscal years
   ended April 3, 1999, April 4, 1998, and March 29, 1997, respectively.


                                       3
<PAGE>

      In addition, the Company helps public utilities, government institutions,
and Fortune 500 companies develop and implement management and computer-based
systems that aid in the collection and application of environmental and
resource-management data. By helping to establish or improve a customer's
environmental-compliance program, the Company's customized services promote and
support the integration of environmental-management functions with everyday
business activities. The Company's services help multinational companies
accurately estimate and control the cost of their environmental-compliance and
health and safety efforts. The Company also develops measurement systems that
track clients' progress toward their stated environmental performance goals.

      The Company provides services to remove radioactive contaminants from
sand, gravel, and soil, as well as health physics services, radiochemistry
laboratory services, radiation dosimetry services, radiation-instrument
calibration and repair services, and radiation-source production. As part of its
radiation and nuclear/health physics services business, the Company provides
site surveys for radioactive materials and on-site samples, as well as analysis
in support of decontamination programs and dosimetry services to measure
personnel exposure. In addition, using its proprietary segmented-gate system
technology, the Company removes radioactive contaminants from sand, gravel, and
soil. A substantial part of the Company's health physics services has been
performed under the U.S. Department of Energy's remedial action programs.

      The Company designs and operates facilities for the remediation of
nonhazardous soil. The Company's soil-remediation centers are environmentally
secure facilities for receiving, storing, and processing petroleum-contaminated
soils. Each site consists principally of a soil-remediation unit and a
soil-storage area. The Company currently provides soil-remediation services at
facilities in California, Oregon, Washington, Maryland, and New York. During
fiscal 1999, the Company announced plans to close two soil-recycling facilities,
one of which was closed in March 1999. The Company is actively seeking a buyer
for the second facility. In May 1999, ThermoRetec announced plans to sell three
additional soil-recycling facilities.

      The market for remediation of petroleum-contaminated soils, as with many
other waste markets, was created by environmental regulations. The market for
soil-remediation services has been driven largely by state programs to enforce
the Environmental Protection Agency's (EPA's) underground storage tank (UST)
regulations and to fund cleanups. UST compliance requirements and attendant
remediation costs are often beyond the financial capabilities of individuals and
smaller companies. To address this problem, some states established
tax-supported trust funds to assist in the financing of UST compliance and
remediation. Many states have realized that the number of sites requiring
remediation and the costs of compliance are substantially higher than were
originally estimated. As a result, several states have significantly reduced
compliance requirements and altered regulatory approaches and standards in order
to reduce the costs of cleanup. More lenient regulatory standards, reduced
enforcement, and uncertainty with respect to such changes have already resulted
in lower levels of cleanup activity in most states where the Company conducts
business, which had a material adverse effect on the Company's business in
recent years. Although the Company expects this market to remain viable for some
time after April 3, 1999, there can be no assurance that this business will not
decline in future years.

      The Company offers a full spectrum of environmental services related to
managing and recycling nonhazardous, liquid, and solid materials generated by
business and industry. The Company's client base is largely public retail and
industrial businesses, but also includes municipalities, public utilities,
railroads, the mining industry, and government agencies. The materials managed
by the Company for its customers primarily are used oils and oil-contaminated
waters, which are continuously generated as part of the customers' operations.
As such, the Company provides services for its customers on a recurring basis.
The Company processes the materials it collects into products for resale and/or
recycling, such as fuel, glycol, steel, and clean water. The Company has
expanded its services to include a variety of field technical services,
including on-site waste sampling and testing, emergency response, and tank
cleaning.

                                       4
<PAGE>

      Thermo EuroTech specializes in processing "off-spec" mixtures of oil that
contain water, ash, and sediment into commercially tradable end products used in
blending. The end products of this process are commercial grade oils that can be
blended to make diesel fuels and marine fuels or be used as a feed material. In
recent years, the global drop in oil prices has affected sales of the off-spec
oil produced at Thermo EuroTech's North Refinery division. Because of the price
decline and instability in the worldwide oil market, Thermo EuroTech has applied
to Dutch authorities for licenses to broaden the variety of waste streams that
could be treated at North Refinery. In addition, Thermo EuroTech has taken steps
to replace and diversify its feedstock suppliers. However, no assurance can be
given that it will not experience future disruptions in deliveries. In May 1999,
the Company announced plans to exit this business. Thermo EuroTech also provides
in-plant waste management and recycling services through its Ireland-based Green
Sunrise subsidiary.

      During fiscal 1999, 1998, and 1997, the Company derived revenues of $159.1
million, $141.1 million, and $126.8 million, respectively, from
environmental-liability management services.

Engineering and Design

      The Company provides comprehensive engineering and outsourcing services in
such areas as water and wastewater treatment, process engineering and
construction, highway and bridge engineering, and infrastructure engineering. A
substantial portion of the Company's engineering and design services sales are
made to existing customers on a repeat basis. Engineering and design services
are often performed as multiyear studies. In addition to federal, state, and
local governments, customers include public utilities, waste management
companies, oil refineries, mining companies, chemical manufacturers,
architectural and engineering firms, and a variety of service companies involved
with real estate transactions.

      The Company specializes in the design, planning, and construction
observation of municipal and privately owned water treatment plants, wastewater
treatment plants, and hazardous wastewater facilities. The Company provides
full-service contract operations to plant owners in the public and private
sectors. These services facilitate regulatory compliance; optimize day-to-day
plant operations; reduce costs; provide competent, experienced personnel; and
promote good community relations.

      In addition, the Company provides design engineering, project management,
and construction services for industrial clients in the manufacturing,
pharmaceutical, and chemical-processing industries, principally in the Mid-West,
Massachusetts, and West Virginia; a broad range of consulting services that
address transportation planning and design; and transportation and environmental
consulting, professional engineering, and architectural services.

      In May 1999, Randers Killam announced plans to sell three businesses: the
Randers division, which provides the Company's process engineering and
construction services; BAC Killam Inc., which provides the Company's highway and
bridge engineering services; and E3-Killam Inc., which provides a small portion
of the Company's water and wastewater treatment services.

      During fiscal 1999, 1998, and 1997, the Company derived revenues of $91.8
million, $84.6 million, and $74.8 million, respectively, from engineering and
design services.

Laboratory Testing

      The Company provides comprehensive laboratory-based services for the
environmental and pharmaceutical industries. Analytical laboratory services
consist of a comprehensive range of analytical tests to detect and measure
organic contaminants and inorganic contaminants in samples of soil, water, air,
industrial wastes, and biological materials. The Company also provides testing
services for major pharmaceutical companies in support of their new healthcare
drug development.

      During fiscal 1999, 1998, and 1997, the Company derived revenues of $40.5
million, $37.5 million, and $35.4 million, respectively, from laboratory testing
services.



                                       5
<PAGE>

Metal Treating

      The Company performs metallurgical processing services using
thermal-treatment equipment at locations in California, Minnesota, and
Wisconsin. Through its Holcroft Division, which was sold in October 1997, the
Company designed, manufactured, and installed computer-controlled,
custom-engineered, thermal-processing systems used to treat primary metals and
metal parts.

      During fiscal 1999, 1998, and 1997, the Company derived revenues of $19.3
million, $36.6 million, and $44.3 million, respectively, from metal treating
services and process systems.

      (ii) New Products

      The Company has made no commitments to new products that would require the
investment of a material amount of the Company's assets.

      (iii) Raw Materials

      Prior to fiscal 1996, a large percentage of oil feedstock at Thermo
EuroTech's North Refinery division came from the former Soviet Union. Thermo
EuroTech no longer receives any oil from that nation as a result of political
and economic changes that make transportation of waste oil difficult. To
overcome this loss of supply, Thermo EuroTech has taken steps to replace and
diversify its feedstock suppliers. However, no assurance can be given that it
will not experience future disruptions in deliveries. In May 1999, the Company
announced plans to sell the North Refinery division.

      Since the Company's business is primarily service oriented, it does not
involve the processing of raw materials and is not dependent on fluctuations in
the supply or price of raw materials, except as described above. To date, the
Company has not experienced any difficulty in obtaining any of the materials or
components used in its operations and does not foresee any such difficulty in
the future. The Company has multiple sources for all of its significant raw
material needs.

      (iv) Patents, Licenses, and Trademarks

      The Company currently owns or has rights under licenses to a number of
U.S. patents. Although the Company believes that patent protection provides it
with competitive advantages with respect to certain portions of its business and
will continue to seek patent protection when appropriate, the Company also
believes that its business depends primarily upon trade secrets and the
technical and marketing expertise of its personnel.

      (v)  Seasonal Influences

      A majority of the Company's businesses experience seasonal fluctuations. A
majority of the Company's soil-remediation sites, as well as the Company's
fluids-recycling sites, experience declines in revenues if severe weather
conditions occur. Site remediation work and certain environmental testing
services may decline in winter months as a result of severe weather conditions.
In Europe, Thermo EuroTech may experience a decline in the feedstock delivered
to and from its facilities during winter months due to frozen waterways.

      (vi) Working Capital Requirements

      In general, there are no special inventory requirements or credit terms
extended to customers that would have a material adverse effect on the Company's
working capital.

                                       6
<PAGE>


      (vii)  Dependency on a Single Customer

      See Government Contracts.

      (viii) Backlog
<TABLE>
<CAPTION>

      The Company's backlog of firm orders at fiscal year-end 1999 and 1998 was:

(In thousands)                                                                             1999      1998
- -------------------------------------------------------------------------------------- --------- ---------

<S>                                                                                    <C>       <C>
Environmental-liability Management                                                     $ 47,635  $ 51,860

Engineering and Design                                                                   62,136    59,633

Laboratory Testing                                                                        2,517     2,362

Metal Treating                                                                              300       300
                                                                                       --------  --------
                                                                                       $112,588  $114,155
                                                                                       ========  ========

      These amounts include the backlog of all of the Company's subsidiaries,
with the exception of soil-recycling, fluids-recycling, and in-plant waste
management and recycling services, which are provided on a current basis
pursuant to purchase orders. Included in the Company's backlog at fiscal
year-end 1999 and 1998 is the incomplete portion of contracts that are accounted
for using the percentage-of-completion method. The Company believes that
substantially all of the backlog at April 3, 1999, will be completed during
fiscal 2000. Certain of these orders are subject to cancellation by the customer
upon payment of a cancellation charge and all government contracts are subject
to termination at any time by the government without penalty.

      (ix) Government Contracts

      Approximately 6%, 4%, and 13%, of the Company's revenues in fiscal 1999,
1998, and 1997, respectively, were derived from contracts or subcontracts with
the federal government that are subject to renegotiation of profits or
termination. The Company does not have any knowledge of threatened or pending
renegotiation or termination of any material contract or subcontract.

      (x)  Competition

      Many of the Company's businesses are engaged in highly competitive,
regional markets, with competition coming from numerous small firms offering
limited services, as well as much larger firms that offer an array of services.

Environmental-liability Management

      In the market for consulting and engineering services, the Company
competes with numerous regional and local companies as well as a number of
national remediation contractors. The Company competes primarily on the basis of
value, with the vast majority of the contracts it seeks awarded on the basis of
scope, effectiveness, and cost. Other competitive factors for the Company's
consulting and engineering businesses include: reputation; experience; breadth
and quality of services offered; and technical, managerial, and business
proficiency.

      The type of radiation and nuclear/health physics services offered by the
Company are also offered by many large national companies. The Company competes
primarily on the basis of its proprietary technology and price.

      Competition in the soil-remediation business is intense. The Company's
principal competitors are landfills, including major landfill companies. The
Company also currently competes with companies offering a wide range of disposal
options, including other fixed-site, thermal-treatment facilities, operators of
mobile thermal-treatment facilities, bioremediation and vapor-extraction
facilities, and, in certain states, with asphalt plants and brick kilns that

                                       7
<PAGE>

use the contaminated soil in their production processes. Competition in the
soil-remediation market has always been highly localized, consisting mostly of
single-site or single-unit operators. Competitive conditions limit the prices
charged by the Company in each local market for soil-remediation services.
Pricing is therefore a major competitive factor for the Company. The Company
believes competition and price pressure will remain intense for the foreseeable
future.

      Competition in the fluids recycling market is highly fragmented and ranges
in size from small, under-capitalized private enterprises to larger national
public companies. At both ends of this spectrum, the industry continues to
consolidate and restructure. The Company competes primarily on the basis of
quality and price.

      Thermo EuroTech faces competition for oil from other oil processors and
blenders and from a company with a similar distillation technology in Italy. The
market for blending oils is very large and oils such as Thermo EuroTech's end
products represent a very small percentage of the total market. Green Sunrise is
the leading integrated service provider in an emerging, still fragmented market.
No one competitor offers Green Sunrise's complete line of services and no single
firm is dominant in any of Green Sunrise's primary service areas. Thermo
EuroTech competes primarily on the basis of price.

Engineering and Design

      The Company's engineering and design businesses are engaged in highly
competitive markets in all of its service areas. These markets tend to be
regional. In its geographic service area, competition consists of small, one- to
three-person firms offering a limited scope of services, as well as much larger
firms that may be regional, national, or international in the scope of services
they offer. The principal competitive factors for the Company are: reputation;
experience; price; breadth and quality of services offered; and technical,
managerial, and business proficiency.

Laboratory Testing

      Hundreds of independent analytical testing laboratories and consulting
firms compete for business nationwide. Many of these firms use equipment and
processes similar to those of the Company. Competition is based not only on
price, but also on reputation for accuracy, quality, and the ability to respond
rapidly to customer requirements. In addition, many industrial companies have
their own in-house analytical testing capabilities. The Company believes that
its competitive strength lies in the quality of its services.

Metal Treating

      The market for metal-treating services is typically regional and
competitive. All regions in which the Company has facilities contain numerous
competitors. In addition, in-house heat-treating facilities provide a major
source of competition. The Company competes in this segment on the basis of
services provided, turnaround time, and price.

      (xi) Environmental Protection Regulations

      The Company believes that compliance by the Company with federal, state,
and local environmental protection regulations will not have a material adverse
effect on its capital expenditures, earnings, or competitive position.

      (xii) Number of Employees

      As of April 3, 1999, the Company employed approximately 2,900 persons.

(d)   Financial Information About Geographic Areas

      The Company's sales in foreign locations are currently insignificant.
</TABLE>

                                       8
<PAGE>


(e)   Executive Officers of the Registrant
<TABLE>
<CAPTION>
<S>                                 <C>     <C>

        Name                          Age   Present Title (Fiscal Year First Became Executive
                                            Officer)
        ---------------------------- ------ -----------------------------------------------------

        Dr. John P. Appleton          64    President and Chief Executive Officer (1993)
        Emil C. Herkert               61    Vice President (1996)
        Jeffrey L. Powell             40    Vice President (1994)
        Theo Melas-Kyriazi            39    Chief Financial Officer (1999)
        Paul F. Kelleher              56    Chief Accounting Officer (1986)

      Each executive officer serves until his successor is chosen or appointed
by the Board of Directors and qualified or until earlier resignation, death, or
removal. All executive officers, except Mr. Herkert and Mr. Powell, have held
comparable positions for at least five years, either with the Company or with
its parent company, Thermo Electron. Mr. Herkert has served as President of
Killam Associates, a subsidiary of Randers Killam, since 1977 and was appointed
Chief Executive Officer of Randers Killam in May 1997. Mr. Powell served as
President of ThermoRetec since its inception in 1993, and as its Chief Executive
Officer from May 1997 until April 1998, when he was named Senior Vice President.
Mr. Melas-Kyriazi was appointed Chief Financial Officer of the Company and
Thermo Electron on January 1, 1999. He joined Thermo Electron in 1986 as
Assistant Treasurer, and became Treasurer in 1988. He was named President and
Chief Executive Officer of ThermoSpectra Corporation, a public subsidiary of
Thermo Instrument Systems Inc., in 1994, a position he held until becoming Vice
President of Corporate Strategy for Thermo Electron in 1998. Mr. Melas-Kyriazi
remains a Vice President of Thermo Electron. Messrs. Melas-Kyriazi and Kelleher
are full-time employees of Thermo Electron, but devote such time to the affairs
of the Company as the Company's needs reasonably require.

Item 2.  Properties

      The location and general character of the Company's principal properties
by segment as of April 3, 1999, are:

Environmental-liability Management

      The Company owns approximately 115,000 square feet of office, engineering,
laboratory, and production space, principally in Ireland, the Netherlands, and
California, and leases approximately 200,000 square feet of office, engineering,
laboratory, and production space pursuant to leases expiring in fiscal 2000
through 2023, principally in Ireland, Colorado, Pennsylvania, Massachusetts, and
New Mexico.

      The Company also owns approximately 72 acres in Maryland, California,
Oregon, and Idaho, from which it provides soil-remediation services. The Company
occupies approximately 20 acres principally in New York, Washington, and South
Carolina pursuant to leases expiring in fiscal 2000 through 2006, from which it
provides soil-remediation services.

      The Company leases approximately six acres on one site in Arizona and one
site in Nevada pursuant to leases expiring in fiscal 2001 and 2003,
respectively, upon which it has constructed fluids storage and processing
equipment.

      The Company occupies approximately 15 acres in Delfzijl, the Netherlands,
pursuant to a lease expiring in 2059, consisting of office space, distillation
facilities, and oil storage tanks.

Engineering and Design

      The Company owns approximately 75,000 square feet of office, engineering,
and laboratory space in New Jersey, Massachusetts, and Michigan, and leases
approximately 180,000 square feet of office, engineering, and laboratory space
pursuant to leases expiring in fiscal 2000 through 2008, principally in
Pennsylvania, New Jersey, New York, Florida, New Hampshire, and Michigan.

                                       9
<PAGE>

Laboratory Testing

      The Company owns approximately 180,000 square feet of office and
laboratory space in Pennsylvania, and leases approximately 12,000 square feet of
office and laboratory space pursuant to leases expiring in fiscal 2001 and 2009
in Michigan and South Carolina, respectively.

Metal Treating

      The Company owns approximately 140,000 square feet of office, laboratory,
and production space in Minnesota and Wisconsin, and leases approximately
330,000 square feet of office, laboratory, and production space pursuant to
leases expiring in fiscal 2003 in California.

      The Company believes that these facilities are in good condition and are
adequate for its present operations and that other suitable space is readily
available if any of such leases are not extended. With respect to leases
expiring in the near future, in the event the Company does not renew such
leases, the Company believes suitable alternate space is available for lease on
acceptable terms.

Item 3.  Legal Proceedings

      Not applicable.

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

      Not applicable.


                                       10
<PAGE>

                                     PART II
Item 5.  Market for Registrant's Common Equity and Related Stockholder Matters

      Information concerning the market and market price for the Registrant's
Common Stock, $.10 par value, and dividend policy are included under the
sections labeled "Common Stock Market Information" and "Dividend Policy" in the
Registrant's Fiscal 1999 Annual Report to Shareholders and is incorporated
herein by reference.

Item 6.  Selected Financial Data

      The information required under this item is included under the sections
labeled "Selected Financial Information" and "Dividend Policy" in the
Registrant's Fiscal 1999 Annual Report to Shareholders and is incorporated
herein by reference.

Item 7.  Management's Discussion and Analysis of Financial Condition and Results of Operations

      The information required under this item is included under the heading
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" in the Registrant's Fiscal 1999 Annual Report to Shareholders and is
incorporated herein by reference.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

      The information required under this item is included under the heading
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" in the Registrant's Fiscal 1999 Annual Report to Shareholders and is
incorporated herein by reference.

Item 8.  Financial Statements and Supplementary Data

      The Registrant's Consolidated Financial Statements as of April 3, 1999,
are included in the Registrant's Fiscal 1999 Annual Report to Shareholders and
are incorporated herein by reference.

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

      Not applicable.


                                       11
<PAGE>

                                    PART III
Item 10. Directors and Executive Officers of the Registrant

      The information concerning Directors required under this item is
incorporated herein by reference from the material contained under the caption
"Election of Directors" in the Registrant's definitive proxy statement to be
filed with the Securities and Exchange Commission pursuant to Regulation 14A,
not later than 120 days after the close of the fiscal year. The information
concerning delinquent filers pursuant to Item 405 of Regulation S-K is
incorporated herein by reference from the material contained under the heading
"Section 16(a) Beneficial Ownership Reporting Compliance" under the caption
"Stock Ownership" in the Registrant's definitive proxy statement to be filed
with the Securities and Exchange Commission pursuant to Regulation 14A, not
later than 120 days after the close of the fiscal year.

Item 11. Executive Compensation

      The information required under this item is incorporated herein by
reference from the material contained under the caption "Executive Compensation"
in the Registrant's definitive proxy statement to be filed with the Securities
and Exchange Commission pursuant to Regulation 14A, not later than 120 days
after the close of the fiscal year.

Item 12. Security Ownership of Certain Beneficial Owners and Management

      The information required under this item is incorporated herein by
reference from the material contained under the caption "Stock Ownership" in the
Registrant's definitive proxy statement to be filed with the Securities and
Exchange Commission pursuant to Regulation 14A, not later than 120 days after
the close of the fiscal year.

Item 13. Certain Relationships and Related Transactions

      The information required under this item is incorporated herein by
reference from the material contained under the caption "Relationship with
Affiliates" in the Registrant's definitive proxy statement to be filed with the
Securities and Exchange Commission pursuant to Regulation 14A, not later than
120 days after the close of the fiscal year.


                                       12
<PAGE>

                                     PART IV
Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

(a,d) Financial Statements and Schedules

      (1)The consolidated financial statements set forth in the list below are
filed as part of this Report.

      (2)The consolidated financial statement schedule set forth in the list
below is filed as part of this Report.

      (3)Exhibits filed herewith or incorporated herein by reference are set
forth in Item 14(c) below.

      List of Financial Statements and Schedules Referenced in this Item 14

      Information incorporated by reference from Exhibit 13 filed herewith:

         Consolidated Statement of Operations
         Consolidated Balance Sheet
         Consolidated Statement of Cash Flows
         Consolidated Statement of Comprehensive Income and Shareholders' Investment
         Notes to Consolidated Financial Statements
         Report of Independent Public Accountants

      Financial Statement Schedule filed herewith:

         Schedule II:  Valuation and Qualifying Accounts

     All other schedules are omitted because they are not applicable or not
     required, or because the required information is shown either in the
     financial statements or the notes thereto.

(b)   Reports on Form 8-K

      None.

(c)   Exhibits

      See Exhibit Index on the page immediately preceding exhibits.
</TABLE>

                                       13
<PAGE>

                                   SIGNATURES
      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed by
the undersigned, thereunto duly authorized.

Date:  June 10, 1999              THERMO TERRATECH INC.


                                  By: /s/ John P. Appleton
                                      John P. Appleton
                                      President and Chief Executive Officer

      Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities indicated, as of June 10, 1999.

Signature                         Title


By:  /s/ John P. Appleton         President, Chief Executive Officer, and
     John P. Appleton              Director


By:  /s/ Theo Melas-Kyriazi       Chief Financial Officer
     Theo Melas-Kyriazi


By:  /s/ Paul F. Kelleher         Chief Accounting Officer
     Paul F. Kelleher


By:  /s/ John N. Hatsopoulos      Director
     John N. Hatsopoulos


By:  /s/ Brian D. Holt            Director
     Brian D. Holt


By:  /s/ Donald E. Noble          Director
     Donald E. Noble


By:  /s/ William A. Rainville     Director
     William A. Rainville


By:  /s/ Polyvios C. Vintiadis    Chairman of the Board and Director
     Polyvios C. Vintiadis

                                       14
<PAGE>


                    Report of Independent Public Accountants
To the Shareholders and Board of Directors of Thermo TerraTech Inc.:

      We have audited, in accordance with generally accepted auditing standards,
the consolidated financial statements included in Thermo TerraTech Inc.'s Annual
Report to Shareholders incorporated by reference in this Form 10-K, and have
issued our report thereon dated May 11, 1999 (except with respect to the matters
discussed in Note 19, as to which the date is June 1, 1999). Our audits were
made for the purpose of forming an opinion on those statements taken as a whole.
The schedule listed in Item 14 on page 13 is the responsibility of the Company's
management and is presented for purposes of complying with the Securities and
Exchange Commission's rules and is not part of the basic consolidated financial
statements. This schedule has been subjected to the auditing procedures applied
in the audits of the basic consolidated financial statements and, in our
opinion, fairly states in all material respects the consolidated financial data
required to be set forth therein in relation to the basic consolidated financial
statements taken as a whole.



                                                          Arthur Andersen LLP



Boston, Massachusetts
May 11, 1999

                                       15
<PAGE>
<TABLE>
<CAPTION>

SCHEDULE II

                              THERMO TERRATECH INC.
                        Valuation and Qualifying Accounts
                                 (In thousands)

<S>                                 <C>         <C>         <C>         <C>         <C>         <C>


                                    Balance at
                                     Beginning   Provision                Accounts                 Balance
                                            of  Charged to    Accounts     Written                  at End
Description                               Year     Expense   Recovered         Off   Other (a)     of Year
- ----------------------------------- ----------- ----------- ----------- ----------- ----------- -----------

 Allowance for Doubtful Accounts

Year Ended April 3, 1999               $ 4,450     $ 2,085     $   (45)    $(2,479)    $  (434)    $ 3,577

Year Ended April 4, 1998               $ 3,838     $ 1,141     $     -     $  (773)    $   244     $ 4,450

Year Ended March 29, 1997              $ 2,861     $   625     $    49     $  (516)    $   819     $ 3,838



 Description                                          Balance at     Provision          Cash       Balance
                                                       Beginning    Charged to      Payments        at End
                                                         of Year   Expense (c)                     of Year
- --------------------------------------------------- ------------- ------------- ------------- -------------

Accrued Restructuring Costs (b)

Year Ended April 3, 1999                                  $    -       $ 2,095       $  (376)      $ 1,719


(a) Includes allowances of businesses acquired during the year as described in
    Note 3 to Consolidated Financial Statements in the Registrant's Fiscal 1999
    Annual Report to Shareholders. Fiscal 1999 amount includes an acquired
    company's reserves that were not required and were therefore reversed to
    cost in excess of net assets of acquired companies.
(b) The nature of activity in this account is described in Note 13 to
    Consolidated Financial Statements in the Registrant's Fiscal 1999 Annual
    Report to Shareholders.
(c) Excludes provision of $8.1 million for fixed asset and intangible asset
    write-downs.

                                       16
<PAGE>

                               EXHIBIT INDEX
Exhibit
Number     Description of Exhibit

  2.1      Purchase and Sale Agreement executed October 6, 1997, by and among
           Remediation Technologies, Inc., RETEC Thermal, Inc., TETRA Thermal,
           Inc., and TETRA Technologies, Inc. (filed as Exhibit 2.1 to Thermo
           Remediation Inc.'s Current Report on Form 8-K dated October 6, 1997
           [File No. 1-12636] and incorporated herein by reference).

  2.2      Assignment and Assumption Agreement executed October 6, 1997, by and
           among Remediation Technologies, Inc., RETEC Thermal, Inc., TETRA
           Thermal, Inc., and TETRA Technologies, Inc. (filed as Exhibit 2.2 to
           Thermo Remediation Inc.'s Current Report on Form 8-K dated October 6,
           1997 [File No. 1-12636] and incorporated herein by reference).

  2.3      Asset Purchase Agreement dated as of October 10, 1997, between the
           Registrant and Holcroft L.L.C. (filed as Exhibit 2.1 to the
           Registrant's Current Report on Form 8-K dated October 10, 1997 [File
           No. 1-9549] and incorporated herein by reference).

  2.4      $2,218,000.00 Principal Promissory Note issued by Holcroft L.L.C. to
           the Registrant (filed as Exhibit 2.2 to the Registrant's Current
           Report on Form 8-K dated October 10, 1997 [File No. 1-9549] and
           incorporated herein by reference).

  2.5      $663,117.82 Principal Promissory Note issued by Holcroft L.L.C. to
           the Registrant (filed as Exhibit 2.3 to the Registrant's Current
           Report on Form 8-K dated October 10, 1997 [File No. 1-9549] and
           incorporated herein by reference).

  2.6      Subordination Agreement dated as of October 10, 1997, between the
           Registrant and Comerica Bank (filed as Exhibit 2.4 to the
           Registrant's Current Report on Form 8-K dated October 10, 1997 [File
           No. 1-9549] and incorporated herein by reference).

  2.7      Stock Purchase and Sale Agreement dated May 12, 1997, by and between
           the Registrant and Thomas R. Eurich, Michael J. Krivitzky, Thomas J.
           McEnhill, and Bruce M. Bourdon (filed as Exhibit (iv) to Amendment
           No. 3 to Schedule 13D filed by Thermo Electron Corporation, Thermo
           Power Corporation, and the Registrant on May 13, 1997, and
           incorporated herein by reference).

  2.8      Amendment No. 1 dated September 19, 1997, to Stock Purchase and Sale
           Agreement dated May 12, 1997, by and between the Registrant and
           Thomas R. Eurich, Michael J. Krivitzky, Thomas J. McEnhill, and Bruce
           M. Bourdon (filed as Exhibit 2.5 to The Randers Group Incorporated's
           Annual Report on Form 10-K for the fiscal year ended April 4, 1998
           [File No. 0-18095] and incorporated herein by reference).

  2.9      Letter of Intent dated May 12, 1997, by and between the Registrant
           and The Randers Group Incorporated (filed as Exhibit (v) to Amendment
           No. 3 to Schedule 13D filed by Thermo Electron Corporation and the
           Registrant on May 13, 1997, and incorporated herein by reference).

  2.10     Stock Purchase Agreement entered on September 19, 1997, by and between the
           Registrant and The Randers Group Incorporated (filed as Exhibit (vii)
           to Amendment No. 4 to Schedule 13D filed by Thermo Electron
           Corporation and the Registrant on October 3, 1997, and incorporated
           herein by reference).

                                       17
<PAGE>


Exhibit
Number     Description of Exhibit

  2.11     Amendment No. 1 dated as of April 4, 1998, to Stock Purchase
           Agreement entered on September 19, 1997, by and between the
           Registrant and The Randers Group Incorporated (filed as Exhibit 2.8
           to The Randers Killam Group Incorporated's Annual Report on Form 10-K
           for the fiscal year ended April 4, 1998 [File No. 0-18095] and
           incorporated herein by reference).

  2.12     Agreement by and among the Registrant, The Randers Group
           Incorporated, Thomas R. Eurich, Michael J. Krivitzky, Thomas J.
           McEnhill, Bruce M. Bourdon, and David A. Wiegerink (filed as Exhibit
           10 to The Randers Group Incorporated's Current Report on Form 8-K
           dated October 3, 1997 [File No. 0-18095] and incorporated herein by
           reference).

  3.1      Restated Certificate of Incorporation, as amended (filed as Exhibit
           99 to the Registrant's Registration Statement on Form S-2 [Reg. No.
           333-02269] and incorporated herein by reference).

  3.2      Bylaws of the Registrant (filed as Exhibit 3(b) to the Registrant's
           Annual Report on Form 10-K for the fiscal year ended April 2, 1988
           [File No. 1-9549] and incorporated herein by reference).

  4.1      Fiscal Agency Agreement dated as of May 2, 1996, among the
           Registrant, Thermo Electron Corporation, and Chemical Bank, as Fiscal
           Agent (filed as Exhibit 4.2 to the Registrant's Annual Report on Form
           10-K for the fiscal year ended March 30, 1996 [File No. 1-9549] and
           incorporated herein by reference).

  4.2      Fiscal Agency Agreement dated as of May 5, 1995, among Thermo
           Remediation Inc., Thermo Electron Corporation, and Chemical Bank, as
           fiscal agent (filed as Exhibit 4.1 to Thermo Remediation Inc.'s
           Annual Report on Form 10-K for the fiscal year ended April 4, 1998
           [File No. 1-12636] and incorporated herein by reference).

           The Registrant hereby agrees, pursuant to Item 601(b)(4)(iii) (A) of
           Regulation S-K, to furnish to the Commission, upon request, a copy of
           each other instrument with respect to other long-term debt of the
           Company or its subsidiaries.

 10.1      Thermo Electron Corporate Charter as amended and restated effective
           January 3, 1993 (filed as Exhibit 10(a) to the Registrant's Annual
           Report on Form 10-K for the fiscal year ended April 3, 1993 [File No.
           1-9549] and incorporated herein by reference).

 10.2      Amended and Restated Corporate Services Agreement dated January 3,
           1993, between Thermo Electron Corporation and the Registrant (filed
           as Exhibit 10(b) to the Registrant's Annual Report on Form 10-K for
           the fiscal year ended April 3, 1993 [File No. 1-9549] and
           incorporated herein by reference).

 10.3      Agreement of Lease dated December 31, 1985, between Claridge
           Properties Ltd. and Thermo Electron Corporation (filed as
           Exhibit 10(c) to the Registrant's Registration Statement on
           Form S-1 [Reg. No. 33-6763] and incorporated herein by
           reference).

 10.4      Assignment of Lease dated December 31, 1985, between Thermo
           Electron Corporation and TMO, Inc. (filed as Exhibit 10(d) to
           the Registrant's Registration Statement on Form S-1 [Reg. No.
           33-6763] and incorporated herein by reference).

                                       18
<PAGE>

Exhibit
Number     Description of Exhibit

 10.5      Sublease dated March 30, 1986, between TMO, Inc. and
           Holcroft/Loftus, Inc. (filed as Exhibit 10(e) to the
           Registrant's Registration Statement on Form S-1 [Reg. No.
           33-6763] and incorporated herein by reference).

 10.6      Lease Amending Agreement dated January 1, 1995, between Claridge
           Properties Ltd., Thermo Electron Corporation, and TMO, Inc. (filed as
           Exhibit 10.6 to the Registrant's Annual Report on Form 10-K for the
           fiscal year ended April 1, 1995 [File No.
           1-9549] and incorporated by reference).

 10.7      Second Amendment to Sublease dated as of October 10, 1997, between
           the Registrant and TMO, Inc. (filed as Exhibit 2.5 to the
           Registrant's Current Report on Form 8-K dated October 10, 1997 [File
           No. 1-9549] and incorporated herein by reference).

 10.8      Sublease dated as of October 10, 1997, between the Registrant and
           Holcroft L.L.C. (filed as Exhibit 2.6 to the Registrant's Current
           Report on Form 8-K dated October 10, 1997 [File No. 1-9549] and
           incorporated herein by reference).

 10.9      Exclusive License and Marketing Agreement dated March 22, 1990, among
           TPS Technologies Inc., Holcroft Inc., and Thermo Soil Recyclers Inc.
           (filed as Exhibit 10(q) to the Registrant's Annual Report on Form
           10-K for the fiscal year ended March 31, 1990 [File No. 1-9549] and
           incorporated herein by reference).

 10.10     Form of Indemnification Agreement with Directors and Officers (filed
           as Exhibit 10(k) to the Registrant's Annual Report on Form 10-K for
           the fiscal year ended March 30, 1991 [File No. 1-9549] and
           incorporated herein by reference).

 10.11     Development Agreement dated September 15, 1991, between Thermo
           Electron Corporation and the Registrant (filed as Exhibit 10(l) to
           the Registrant's Quarterly Report on Form 10-Q for the fiscal quarter
           ended September 28, 1991 [File No. 1-9549] and incorporated herein by
           reference).

 10.12     Amended and Restated Development Agreement dated January 2, 1992,
           between Thermo Electron Corporation and the Registrant (filed as
           Exhibit 10(m) to the Registrant's Annual Report on Form 10-K for the
           fiscal year ended March 28, 1992 [File No. 1-9549] and incorporated
           herein by reference).

 10.13     Asset Transfer Agreement dated as of October 1, 1993, among the
           Registrant, TPS Technologies Inc., and Thermo Remediation Inc.
           (filed as Exhibit 2.3 to Thermo Remediation Inc.'s Registration
           Statement on Form S-1 [Reg. No. 33-70544] and incorporated
           herein by reference).

 10.14     Exclusive License Agreement dated as of October 1, 1993, among
           the Registrant, TPS Technologies Inc., and Thermo Remediation
           Inc. (filed as Exhibit 2.4 to Thermo Remediation Inc.'s
           Registration Statement on Form S-1 [Reg. No. 33-70544] and
           incorporated herein by reference).

 10.15     Non-Competition and Non-Disclosure Agreement dated as of
           October 1, 1993, among the Registrant, TPS Technologies Inc.'s,
           and Thermo Remediation Inc. (filed as Exhibit 2.5 to Thermo
           Remediation Inc.'s Registration Statement on Form S-1 [Reg. No.
           33-70544] and incorporated herein by reference).

 10.16     Tax Allocation Agreement dated as of June 1, 1992, between the
           Registrant and Thermo Remediation Inc. (filed as Exhibit 10.3
           to Thermo Remediation Inc.'s Registration Statement on Form S-1
           [Reg. No. 33-70544] and incorporated herein by reference).

                                       19
<PAGE>

Exhibit
Number     Description of Exhibit

 10.17     Agreement of Partnership dated May 16, 1994, among Terra Tech Labs
           Inc. (a wholly owned subsidiary of the Registrant) and Eberline
           Analytical Corporation, Skinner & Sherman, Inc., TMA/NORCAL Inc.,
           Normandeau Associates Inc., Bettigole Andrews & Clark Inc., Fellows,
           Read & Associates Inc., and Thermo Consulting Engineers Inc. (each a
           wholly owned subsidiary of Thermo Instrument Systems Inc.; filed as
           Exhibit 1 to the Registrant's Current Report on Form 8-K relating to
           the events occurring on May 16, 1994 [File No. 1-9549] and
           incorporated herein by reference).

 10.18     Promissory Note dated May 16, 1994, issued by the Registrant to
           Thermo Electron Corporation (filed as Exhibit 2 to the Registrant's
           Current Report on Form 8-K relating to the events occurring on May
           16, 1994 [File No. 1-9549] and incorporated herein by reference).

 10.19     Agreement of Dissolution of Partnership dated May 9, 1995, among
           Thermo Terra Tech (the Partnership), Terra Tech Labs, Inc. (a wholly
           owned subsidiary of the Registrant) and Eberline Analytical
           Corporation, Skinner & Sherman, Inc., TMA/NORCAL Inc., Normandeau
           Associates Inc., Bettigole Andrews & Clark Inc., Fellows, Read &
           Associates Inc., and Thermo Consulting Engineers Inc. (each a wholly
           owned subsidiary of Thermo Instrument Systems Inc.; filed as Exhibit
           2.1 to the Registrant's Current Report on Form 8-K relating to the
           events occurring on May 9, 1995 [File No. 1-9549] and incorporated
           herein by reference).

 10.20     Stock Purchase Agreement dated May 9, 1995, between the Registrant
           and Thermo Instrument Systems Inc. (filed as Exhibit 2.2 to the
           Registrant's Current Report on Form 8-K relating to the events
           occurring on May 9, 1995 [File No. 1-9549] and incorporated herein by
           reference).

 10.21     Note dated May 17, 1995, from the Registrant to Thermo Electron
           Corporation (filed as Exhibit 2.3 to the Registrant's Current Report
           on Form 8-K relating to the events occurring on May 9, 1995 [File No.
           1-9549] and incorporated herein by reference).

 10.22     Stock Purchase and Note Issuance Agreement dated as of November
           22, 1993, between the Registrant and Thermo Remediation Inc.
           (filed as Exhibit 10.11 to Thermo Remediation Inc.'s
           Registration Statement on Form S-1 [Reg. No. 33-70544] and
           incorporated herein by reference).

 10.23     $2,650,000 principal amount Subordinated Convertible Note dated as of
           November 22, 1993, made by Thermo Remediation Inc., issued to the
           Registrant (filed as Exhibit 10.12 to Thermo Remediation Inc.'s
           Registration Statement on Form S-1 [Reg. No. 33-70544] and
           incorporated herein by reference).

 10.24     Stock Purchase and Sale Agreement made and entered into on
           February 6, 1995, to be effective as of January 29, 1995, by
           and between Nord Est S.A., the Registrant, and Emil C. Herkert,
           Kenneth L. Zippler, Franklin O. Williamson, Jr., Fletcher N.
           Platt, Jr., Eugene J. Destefano, Meint Olthof, and Stanley P.
           Kaltnecker, Jr. (filed as Exhibit 1 to the Registrant's Current
           Report on Form 8-K relating to the events occurring on February
           6, 1995 [File No. 1-9549] and incorporated herein by reference).

 10.25     Agreement and Plan of Merger dated as of June 28, 1995, by and among
           the Registrant, Eberline Acquisition Inc., Thermo Remediation Inc.,
           and Eberline Holdings Inc. (filed as Appendix B to Thermo Remediation
           Inc.'s Proxy Statement for the Annual Meeting held on December 13,
           1995 [File No. 1-12636] and  incorporated herein by reference).

                                       20
<PAGE>

Exhibit
Number     Description of Exhibit

 10.26     $28,000,000 Secured Promissory Note dated as of January 29, 1995,
           issued by the Registrant to Nord Est S.A. (filed as Exhibit 2 to the
           Registrant's Current Report on Form 8-K relating to the events
           occurring on February 6, 1995 [File No. 1-9549] and incorporated
           herein by reference).

 10.27     $38,000,000 Promissory Note dated as of February 21, 1995, issued by
           the Registrant to Thermo Electron Corporation (filed as Exhibit 3 to
           the Registrant's Current Report on Form 8-K relating to the events
           occurring on February 6, 1995 [File No. 1-9549] and incorporated
           herein by reference).

 10.28     Asset Purchase Agreement by and among Thermo Analytical Inc.
           (as Buyer); Lancaster Laboratories, Inc. and Clewmark Holdings
           (as Sellers); and Earl H. Hess, Anita F. Hess, Kenneth E. Hess,
           J. Wilson Hershey, and Carol D. Hess (as the principal owners
           of Sellers) (filed as Exhibit 1 to the Registrant's Current
           Report on Form 8-K relating to the events occurring on May 10,
           1995 [File No. 1-9549] and incorporated herein by reference).

 10.29     Agreement and Plan of Merger dated as of the first day of December
           1995, by and among Thermo Remediation Inc., TRI Acquisition Inc., and
           Remediation Technologies, Inc. (filed as Exhibit 2(a) to the
           Registrant's Current Report on Form 8-K relating to the events
           occurring on December 8, 1995 [File No. 1-9549] and incorporated
           herein by reference).

 10.30     Purchase and Sale Agreement dated as of December 20, 1994, by and
           among TPS Technologies Inc., TPST Soil Recyclers of Maryland Inc.,
           Rafich Corporation, Harry Ratrie, John C. Cyphers, and J. Thomas Hood
           (filed as Exhibit 1 to Thermo Remediation Inc.'s Current Report on
           Form 8-K for the events occurring on December 21, 1994 [File No.
           1-12636] and incorporated herein by reference).

 10.31     Stock Purchase Agreement entered into on March 29, 1995, by and among
           Stalt Holding, B.V., Beheersmaatschappij J. Amerika N.V., A.J. Van
           Es, J.B. Van Es and D.A. Slager, and the Registrant (filed as Exhibit
           1 to the Registrant's Current Report on Form 8-K relating to the
           events occurring on March 29, 1995 [File No. 1-9549] and incorporated
           herein by reference).

 10.32     Thermo TerraTech Inc. - The Randers Group Incorporated Nonqualified
           Stock Option Plan (filed as Exhibit 10.1 to the Registrant's
           Quarterly Report on Form 10-Q for the quarter ended January 3, 1998
           [File No. 1-9549] and incorporated herein by reference).

 10.33     Incentive Stock Option Plan of the Registrant (filed as Exhibit 10(h)
           to the Registrant's Registration Statement on Form S-1 [Reg. No.
           33-6763] and incorporated herein by reference). (Maximum number of
           shares issuable in the aggregate under this plan and the Registrant's
           Nonqualified Stock Option Plan is 1,850,000 shares, after adjustment
           to reflect share increases approved in 1987, 1989, and 1992, 6-for-5
           stock splits effected in July 1988 and March 1989, and 3-for-2 stock
           split effected in September 1989.)

 10.34     Nonqualified Stock Option Plan of the Registrant (filed as Exhibit
           10(i) to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-6763] and incorporated herein by reference). (Maximum number
           of shares issuable in the aggregate under this plan and the
           Registrant's Incentive Stock Option Plan is 1,850,000 shares, after
           adjustment to reflect share increases approved in 1987, 1989, and
           1992, 6-for-5 stock splits effected in July 1988 and March 1989, and
           3-for-2 stock split effected in September 1989.)

 10.35     Deferred Compensation Plan for Directors of the Registrant
           (filed as Exhibit 10(k) to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-6763] and incorporated
           herein by reference).

                                       21
<PAGE>

Exhibit
Number     Description of Exhibit

 10.36     Equity Incentive Plan (filed as Exhibit 10.63 to Thermedics Inc.'s
           Annual Report on Form 10-K for the fiscal year ended January 1, 1994
           [File No. 1-9567] and incorporated herein by reference; maximum
           number of shares issuable is 1,750,000 shares, after adjustment to
           reflect share increase approved in 1994).

 10.37     Directors Stock Option Plan, as amended and restated effective
           January 1, 1995 (filed as Exhibit 10.39 to the Registrant's Annual
           Report on Form 10-K for the fiscal year ended April 1, 1995 [File No.
           1-9549] and incorporated herein by reference).

 10.38     Thermo TerraTech Inc. (formerly Thermo Process Systems Inc.) -
           Thermo Remediation Inc. Nonqualified Stock Option Plan (filed
           as Exhibit 10(l) to the Registrant's Quarterly Report on Form
           10-Q for the fiscal quarter ended January 1, 1994 [File No.
           1-9549] and incorporated herein by reference).

           In addition to the stock-based compensation plans of the Registrant,
           the executive officers of the Registrant may be granted awards under
           stock-based compensation plans of Thermo Electron for services
           rendered to the Registrant or to such affiliated corporations. The
           terms of such plans are substantially the same as those of the
           Registrant's Equity Incentive Plan.

 10.39     Restated Stock Holdings Assistance Plan and Form of Executive Loan
           (filed as Exhibit 10.42 to the Registrant's Annual Report on Form
           10-K for the fiscal year ended March 29, 1997 [File No. 1-9549] and
           incorporated herein by reference).

 10.40     Deferred Compensation Agreement dated September 16, 1996, between Elson T.
           Killam Associates Inc. and Emil C. Herkert (filed as Exhibit 10.1 to
           the Registrant's Quarterly Report on Form 10-Q for the fiscal quarter
           ended July 4, 1998 [File No. 1-9549] and incorporated herein by
           reference).

 10.41     Addendum dated 1990, to Deferred Compensation Agreement dated September 16,
           1986, between Elson T. Killam Associates Inc. and Emil C. Herkert
           (filed as Exhibit 10.2 to the Registrant's Quarterly Report on Form
           10-Q for the fiscal quarter ended July 4, 1998 [File No. 1-9549] and
           incorporated herein by reference).

 10.42     Amendment No. 1, dated April 27, 1990, to Deferred Compensation Agreement
           dated September 16, 1986, between Elson T. Killam Associates Inc.
           and Emil C. Herkert (filed as Exhibit 10.3 to the Registrant's Quarterly
           Report on Form 10-Q for the fiscal quarter ended July 4, 1998
           [File No. 1-9549] and incorporated herein by reference).

 10.43     Master Cash Management, Guarantee Reimbursement, and Loan Agreement dated as
           of June 1, 1999, between the Registrant and Thermo Electron
           Corporation.

 10.44     Master Cash Management, Guarantee Reimbursement, and Loan Agreement dated as
           of June 1, 1999, between ThermoRetec Corporation and Thermo Electron
           Corporation (filed as Exhibit 10.17 to ThermoRetec Corporation's
           Annual Report on Form 10-K for the fiscal year ended April 3, 1999
           [File No. 1-12636] and incorporated herein by reference).

 10.45     Master Cash Management, Guarantee Reimbursement, and Loan Agreement dated as
           of June 1, 1999, between The Randers Killam Group Inc. and Thermo
           Electron Corporation (filed as Exhibit 10.18 to The Randers Killam
           Group Inc.'s Annual Report on Form 10-K for the fiscal year ended
           April 3, 1999 [File No. 0-18095] and incorporated herein by
           reference).

                                       22
<PAGE>


Exhibit
Number     Description of Exhibit

 13        Annual Report to Shareholders for the fiscal year ended April 3, 1999
           (only those portions incorporated herein by reference).

 21        Subsidiaries of the Registrant.

 23        Consent of Arthur Andersen LLP.

 27        Financial Data Schedule.
</TABLE>


                                                                 Exhibit 10.43

                        MASTER CASH MANAGEMENT, GUARANTEE
                        REIMBURSEMENT AND LOAN AGREEMENT


      This  AGREEMENT  is  entered  into as of the 1st day of June,  1999 by and
between Thermo Electron Corporation,  a Delaware corporation ("Thermo Electron")
and Thermo TerraTech Inc., a Delaware corporation (the "Subsidiary").

                                   WITNESSETH:

      WHEREAS,  Thermo  Electron  and  the  Subsidiary  are  party  to a  Master
Repurchase Agreement, as amended and restated,  which contains terms governing a
cash management  arrangement  between them and a Master Guarantee  Reimbursement
and Loan  Agreement,  as amended and restated,  which contains terms relating to
intercompany credit support and a short term borrowing facility;

      WHEREAS, Thermo Electron and the Subsidiary desire to establish a new cash
management arrangement and short term borrowing facility between them in lieu of
the  arrangements  set forth in the Master  Repurchase  Agreement and the Master
Guarantee  Reimbursement  and Loan Agreement and also to  consolidate  the terms
relating to intercompany credit support in one agreement;

      WHEREAS,  the Subsidiary and other majority owned  subsidiaries  of Thermo
Electron  that  join  in  this  Agreement  (collectively,   the  "Majority-Owned
Subsidiaries")  and their  wholly-owned  subsidiaries wish to enter into various
financial  transactions,  such as convertible  or  nonconvertible  debt,  loans,
equity  offerings,  and other  contractual  arrangements with third parties (the
"Underlying Obligations") and may provide credit support to, on behalf of or for
the  benefit  of,  other   subsidiaries  of  Thermo  Electron  ("Credit  Support
Obligations");

      WHEREAS,  the Majority Owned Subsidiaries and Thermo Electron  acknowledge
that the Majority Owned Subsidiaries and their wholly-owned  subsidiaries may be
unable to enter into many kinds of Underlying Obligations without a guarantee of
their  performance  thereunder  from Thermo  Electron (a "Parent  Guarantee") or
without   obtaining  Credit  Support   Obligations  from  other  Majority  Owned
Subsidiaries;

      WHEREAS,  certain Majority Owned Subsidiaries ("Second Tier Majority Owned
Subsidiaries")  may themselves be majority owned  subsidiaries of other Majority
Owned Subsidiaries ("First Tier Majority Owned Subsidiaries");

      WHEREAS, for various reasons,  Parent Guarantees of a Second Tier Majority
Owned Subsidiary's  Underlying Obligations may be demanded and given without the
respective First Tier Majority Owned Subsidiary also issuing a guarantee of such
Underlying Obligation;

      WHEREAS, Thermo Electron may itself make a loan or provide other credit to
a Second Tier Majority Owned Subsidiary or its wholly-owned  subsidiaries  under
circumstances where the applicable First Tier Majority Owned Subsidiary does not
provide such credit; and
<PAGE>

      WHEREAS, Thermo Electron is willing to consider continuing to issue Parent
Guarantees and providing credit, and the Majority Owned Subsidiaries are willing
to consider continuing to provide Credit Support  Obligations,  on the terms and
conditions set forth below;

      NOW,  THEREFORE,  in  consideration  of the  foregoing  and other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged by each party hereto, the parties agree as follows:

      1. Cash Management  Arrangement.  The Subsidiary directly,  or through its
wholly-owned U.S. subsidiaries,  may, from time to time, lend its excess cash to
Thermo Electron (a "Transaction"),  on an unsecured basis, bearing interest at a
rate equal to the 30-day  Dealer  Commercial  Paper Rate as reported in the Wall
Street  Journal  (the "DCP  Rate")  plus 50 basis  points,  which  rate shall be
adjusted on the second  business day of each fiscal month of the  Subsidiary and
shall be in effect for the entirety of such fiscal month.  The Subsidiary  shall
institute  a  Transaction  by  depositing  its excess  cash in the  Subsidiary's
concentration  account at BankBoston  Corporation  ("BankBoston")  or other bank
designated by Thermo Electron. At the end of each business day, the cash balance
deposited in the  Subsidiary's  concentration  account shall be  transferred  to
Thermo Electron's intercompany account at BankBoston or other bank designated by
Thermo Electron.  Thermo Electron shall indicate on its books the balance of the
Subsidiary's  cash held by Thermo  Electron under this  arrangement.  After each
fiscal  month  end,  Thermo  Electron  shall  provide  the  Subsidiary  a report
indicating  the  Subsidiary's  aggregate  cash balance  ("Excess  Cash") held by
Thermo Electron  hereunder.  The Subsidiary shall have the right to withdraw all
or part of its Excess Cash upon 30 days' prior notice to Thermo Electron. Within
30 days of receipt of such withdrawal notice, Thermo Electron shall transfer the
portion of the Excess Cash requested for withdrawal to an account  designated by
the  Subsidiary.  Thermo  Electron  shall  maintain,  at all times,  cash,  cash
equivalents and/or immediately  available bank lines of credit equal to at least
50% of the  cash  balances  of the  Subsidiary  and of all  other  participating
subsidiaries of Thermo Electron, other than wholly-owned  subsidiaries of Thermo
Electron,  held by Thermo  Electron  under this  arrangement.  Interest shall be
payable on the Excess  Cash by Thermo  Electron  to the  Subsidiary  each fiscal
month in arrears. In addition, the Subsidiary's non-U.S.  subsidiaries may, from
time to time,  lend or  advance  their  excess  cash to Thermo  Electron,  on an
unsecured  basis,  bearing  interest  at rates  set by  Thermo  Electron  at the
beginning of each month, based to the extent practicable on comparable  interest
rates  generally  available  in the  local  jurisdiction  of such  participating
non-U.S.  subsidiary.  Further,  Thermo Electron and such non-U.S.  subsidiaries
participating  in the cash  management  arrangement  with Thermo  Electron shall
establish   mutually  agreeable   procedures   governing  such  cash  management
arrangement.

      2. Loans and Advances.  Upon request from the Subsidiary,  Thermo Electron
may make loans and advances to the Subsidiary on a short-term,  revolving credit
basis,  from time to time,  in such  amounts as  mutually  determined  by Thermo
Electron and the Subsidiary.  The aggregate  principal  amount of such loans and
advances  shall be  reflected  on the books and  records of the  Subsidiary  and
Thermo  Electron.  All such loans and advances  shall be on an  unsecured  basis
unless  specifically  provided  otherwise in separate loan documents executed at
that time. The Subsidiary  shall pay interest on the aggregate  unpaid principal
amount of such  loans from time to time  outstanding  at a rate equal to the DCP
Rate plus one hundred fifty (150) basis points,  which rate shall be adjusted on


                                       2
<PAGE>



the second  business day of each fiscal month of the  Subsidiary and shall be in
effect for the entirety of such fiscal month.  If,  however,  one or more of the
Subsidiary's  majority-owned U.S.  subsidiaries (i.e., not wholly-owned) is also
participating in the cash management arrangement with Thermo Electron,  then the
rate  payable  on  the  Subsidiary's  outstanding  principal  balance  shall  be
calculated   as  follows:   If  the   aggregate   amount  of  the   Subsidiary's
majority-owned  U.S.  subsidiaries'  cash  balances  under  the cash  management
arrangement  ("Majority-Owned  Excess Cash") equals or exceeds the  Subsidiary's
outstanding  principal  balance,  then the Subsidiary  shall pay interest on the
aggregate unpaid principal amount of such loans at a rate per annum equal to the
DCP  Rate  plus  fifty  (50)  basis  points.  If  the  aggregate  amount  of the
Majority-Owned  Excess Cash is less than the Subsidiary's  outstanding principal
balance, then (A) the Subsidiary shall pay interest at a rate per annum equal to
the DCP Rate  plus  fifty  (50)  basis  points  on that  portion  of the  unpaid
principal amount equal to the Majority-Owned Excess Cash, and (B) the Subsidiary
shall pay  interest  at a rate per annum  equal to the DCP Rate plus one hundred
fifty (150) basis points on that portion of the unpaid principal amount equal to
(i)  the   Subsidiary's   outstanding   principal   balance,   minus   (ii)  the
Majority-Owned  Excess  Cash.  The  interest  rates  set  forth in the prior two
sentences  shall be adjusted on the second  business day of each fiscal month of
the  Subsidiary  and shall be in effect for the  entirety of such fiscal  month.
Interest shall be computed on a 360-day  basis.  Interest is payable each fiscal
month in arrears.  The aggregate  principal amount  outstanding shall be payable
within 30 days of demand by Thermo  Electron.  Overdue  principal  and  interest
shall bear interest at a rate per annum equal to the rate of interest  published
from  time to time in the Wall  Street  Journal  as the  "prime  rate"  plus one
percent (1%).  The principal and accrued  interest may be paid by the Subsidiary
at any time or from  time to time,  in whole  or in  part,  without  premium  or
penalty.  All payments  shall be applied  first to accrued  interest and then to
principal.  At the end of each business  day,  Thermo  Electron  shall apply the
balance of the  Subsidiary's  Excess Cash held by Thermo Electron under the cash
management  arrangement  toward  the  payment  of any loans or  advances  to the
Subsidiary.  Principal  and  interest  shall be payable  in lawful  money of the
United  States of America,  in  immediately  available  funds,  at the principal
office  of  Thermo  Electron  or at such  other  place as  Thermo  Electron  may
designate from time to time in writing to the Subsidiary.  The unpaid  principal
amount of any such  borrowings,  and  accrued  interest  thereon,  shall  become
immediately  due and payable,  without  demand,  upon  occurrence  of any of the
following events:

      (a) the failure of the  Subsidiary to pay any amount due hereunder  within
      fifteen (15) days of the date when due;

      (b) the failure of the Subsidiary to pay its debts as they become due, the
      filing  by or  against  the  Subsidiary  of any  petition  under  the U.S.
      Bankruptcy  Code  (or  the  filing  of  any  similar  petition  under  the
      insolvency law of any jurisdiction), or the making by the Subsidiary of an
      assignment  or  trust  mortgage  for  the  benefit  of  creditors  or  the
      appointment of a receiver,  custodian or similar agent with respect to, or
      the taking by any such person of possession  of, any material  property of
      the Subsidiary;

      (c)   the sale by the Subsidiary of all or substantially all of its
assets;

      (d) the merger or  consolidation  of the Subsidiary with or into any other
      corporation  in a transaction in which the Subsidiary is not the surviving
      entity;

                                       3
<PAGE>

      (e) the  issuance  of any  writ  of  attachment,  by  trustee  process  or
      otherwise, or any restraining order or injunction against or affecting the
      person or  property of the  Subsidiary  that is not  removed,  repealed or
      dismissed  within  thirty  (30)  days of  issuance  and as a result  has a
      material adverse effect on the business,  operations, assets or condition,
      financial or otherwise,  of the Subsidiary or its ability to discharge any
      of its liabilities or obligations to Thermo Electron; and

      (f)   the  suspension  of the  transaction  of the usual  business  of the
            Subsidiary.

      3.     Guarantee Arrangements.

      (a) If  Thermo  Electron  provides  a Parent  Guarantee  of an  Underlying
      Obligation,  and the  beneficiary(ies) of the Parent Guarantee enforce the
      Parent  Guarantee,  or Thermo Electron performs under the Parent Guarantee
      for  any  other  reason,  then  the  Majority  Owned  Subsidiary  that  is
      obligated,   either   directly  or  indirectly   through  a   wholly-owned
      subsidiary,  under such  Underlying  Obligation  shall  indemnify and save
      harmless  Thermo  Electron  from any  liability,  cost,  expense or damage
      (including  reasonable  attorneys'  fees) suffered by Thermo Electron as a
      result of the Parent Guarantee.  If the Underlying Obligation is issued by
      a Second Tier  Majority  Owned  Subsidiary  or a  wholly-owned  subsidiary
      thereof, and such Second Tier Majority Owned Subsidiary is unable to fully
      indemnify Thermo Electron (because of the poor financial condition of such
      Second Tier Majority Owned Subsidiary,  or for any other reason), then the
      First Tier Majority Owned  Subsidiary  that owns the majority of the stock
      of such Second Tier Majority  Owned  Subsidiary  shall  indemnify and save
      harmless Thermo Electron from any remaining  liability,  cost,  expense or
      damage (including  reasonable attorneys' fees) suffered by Thermo Electron
      as a result of the Parent  Guarantee.  If a Majority Owned Subsidiary or a
      wholly-owned  subsidiary  thereof provides a Credit Support Obligation for
      any  subsidiary  of  Thermo  Electron,  other  than a  subsidiary  of such
      Majority Owned Subsidiary,  and the beneficiary(ies) of the Credit Support
      Obligation  enforce the Credit Support  Obligation,  or the Majority Owned
      Subsidiary  or its  wholly-owned  subsidiary  performs  under  the  Credit
      Support  Obligation  for any other  reason,  then  Thermo  Electron  shall
      indemnify  and  save  harmless  the  Majority  Owned   Subsidiary  or  its
      wholly-owned subsidiary, as applicable,  from any liability, cost, expense
      or damage (including  reasonable attorneys' fees) suffered by the Majority
      Owned  Subsidiary or its  wholly-owned  subsidiary,  as  applicable,  as a
      result of the Credit Support  Obligation.  Without limiting the foregoing,
      Credit  Support  Obligations  include  the  deposit of funds by a Majority
      Owned  Subsidiary  or  a  wholly-owned  subsidiary  thereof  in  a  credit
      arrangement  with a banking  facility  whereby such funds are available to
      the banking  facility as  collateral  for overdraft  obligations  of other
      Majority Owned  Subsidiaries or their  subsidiaries also  participating in
      the credit  arrangement with such banking facility.  Nothwithstanding  the
      foregoing,  in  order  to  obtain  the  benefits  of  the  indemnification
      obligations of the First Tier Majority Owned Subsidiary set forth above in
      this  Section  3(a),  Thermo  Electron  must have  notified the First Tier
      Majority Owned  Subsidiary  prior to  guaranteeing  the obligations of the
      Second Tier Majority  Owned  Subsidiary.  If after five (5) business days,


                                       4
<PAGE>

      Thermo  Electron  has not  received  from the First  Tier  Majority  Owned
      Subsidiary  a notice of  objection  stating  that the First Tier  Majority
      Owned Subsidiary  objects to Thermo Electron  guaranteeing the obligations
      of the Second Tier Majority  Owned  Subsidiary,  then Thermo  Electron may
      proceed  to issue its  guarantee  of the  Underlying  Obligation  and such
      guarantee  shall  be  subject  to  the  benefits  of  the  indemnification
      obligations of the First Tier Majority Owned Subsidiary set forth above in
      this  Section  3(a).  If  Thermo  Electron  does  receive  such  notice of
      objection,  then Thermo  Electron's  guarantee shall not be subject to the
      indemnification  obligations of the First Tier Majority  Owned  Subsidiary
      set forth above in this Section 3(a).

      (b) For purposes of this Agreement, the term "guarantee" shall include not
      only a formal guarantee of an obligation,  but also any other  arrangement
      where Thermo  Electron is liable for the  obligations  of a Majority Owned
      Subsidiary  or its  wholly-owned  subsidiaries.  Such  other  arrangements
      include  (a)   representations,   warranties  and/or  covenants  or  other
      obligations joined in by Thermo Electron,  whether on a joint or joint and
      several  basis,  for the benefit of the Majority  Owned  Subsidiary or its
      wholly-owned  subsidiaries  and (b)  responsibility  of Thermo Electron by
      operation  of law  for  the  acts  and  omissions  of the  Majority  Owned
      Subsidiary or its wholly-owned subsidiaries,  including controlling person
      liability under securities and other laws.

      (c) Promptly after Thermo Electron receives notice that a beneficiary of a
      Parent  Guarantee  is seeking to enforce  such  Parent  Guarantee,  Thermo
      Electron shall notify the Majority Owned Subsidiary(s)  obligated,  either
      directly  or  indirectly  through  a  wholly-owned  subsidiary,  under the
      relevant  Underlying  Obligation.  Such Majority  Owned  Subsidiary(s)  or
      wholly-owned  subsidiary thereof, as applicable,  shall have the right, at
      its own expense,  to contest the claim of such beneficiary.  If a Majority
      Owned Subsidiary or wholly-owned  subsidiary  thereof,  as applicable,  is
      contesting the claim of such beneficiary, Thermo Electron will not perform
      under the relevant Parent Guarantee unless and until, in Thermo Electron's
      reasonable judgment,  Thermo Electron is obligated under the terms of such
      Parent Guarantee to perform. Subject to the foregoing, any dispute between
      a  Majority  Owned  Subsidiary  or  wholly-owned  subsidiary  thereof,  as
      applicable,  and a beneficiary of a Parent Guarantee shall not affect such
      Majority  Owned  Subsidiary's  obligation  to  promptly  indemnify  Thermo
      Electron  hereunder.   Promptly  after  a  Majority  Owned  Subsidiary  or
      wholly-owned  subsidiary  thereof,  as applicable,  receives notice that a
      beneficiary  of a Credit  Support  Obligation  is seeking to enforce  such
      Credit  Support  Obligation,  the Majority Owned  Subsidiary  shall notify
      Thermo Electron. Thermo Electron shall have the right, at its own expense,
      to  contest  the  claim of such  beneficiary.  If Thermo  Electron  or the
      subsidiary  of  Thermo   Electron  on  whose  behalf  the  Credit  Support
      Obligation  is given is  contesting  the  claim of such  beneficiary,  the
      Majority  Owned  Subsidiary  or  wholly-owned   subsidiary   thereof,   as
      applicable,  will not perform under the relevant Credit Support Obligation
      unless and until, in the Majority Owned Subsidiary's  reasonable judgment,
      the Majority  Owned  Subsidiary or  wholly-owned  subsidiary  thereof,  as
      applicable, is obligated under the terms of such Credit Support Obligation
      to perform.  Subject to the foregoing, any dispute between Thermo Electron
      or the  subsidiary of Thermo  Electron on whose behalf the Credit  Support
      Obligation  was  given,  on the one hand,  and a  beneficiary  of a Credit
      Support  Obligation,  on the  other,  shall not affect  Thermo  Electron's
      obligation  to promptly  indemnify  the Majority  Owned  Subsidiary or its
      wholly-owned subsidiary, as applicable, hereunder.

                                       5
<PAGE>

      (d) If Thermo  Electron  makes a loan or provides  other  credit  ("Credit
      Extension")  to a Second Tier Majority  Owned  Subsidiary,  the First Tier
      Majority  Owned  Subsidiary  that owns the  majority  of the stock of such
      Second Tier Majority Owned  Subsidiary  hereby  guarantees the Second Tier
      Majority Owned  Subsidiary's  obligations to Thermo  Electron  thereunder.
      Such  guaranty  shall be  enforced  only  after  Thermo  Electron,  in its
      reasonable  judgment,  determines  that the  Second  Tier  Majority  Owned
      Subsidiary  is unable to fully  perform its  obligations  under the Credit
      Extension.  If Thermo Electron provides Credit Extension to a wholly-owned
      subsidiary of a Second Tier  Majority  Owned  Subsidiary,  the Second Tier
      Majority Owned Subsidiary hereby  guarantees it wholly-owned  subsidiary's
      obligations  to Thermo  Electron  thereunder  and the First Tier  Majority
      Owned  Subsidiary  that owns the majority of the stock of such Second Tier
      Majority Owned Subsidiary hereby guarantees the Second Tier Majority Owned
      Subsidiary's  obligations to Thermo Electron  hereunder.  Such guaranty by
      the First Tier  Majority  Owned  Subsidiary  shall be enforced  only after
      Thermo Electron,  in its reasonable  judgment,  determines that the Second
      Tier  Majority  Owned  Subsidiary  is unable to fully perform its guaranty
      obligation hereunder. Notwithstanding the foregoing, in order for a Credit
      Extension  to be  deemed  guaranteed  by the  First  Tier  Majority  Owned
      Subsidiary as set forth above in this Section 3(d),  Thermo  Electron must
      have notified the First Tier Majority Owned  Subsidiary prior to providing
      the Credit  Extension to the Second Tier  Majority  Owned  Subsidiary.  If
      after five (5) business  days,  Thermo  Electron has not received from the
      First Tier Majority  Owned  Subsidiary a notice of objection  stating that
      the First  Tier  Majority  Owned  Subsidiary  objects  to Thermo  Electron
      providing a Credit Extension to the Second Tier Majority Owned Subsidiary,
      then  Thermo  Electron  may proceed to issue the Credit  Extension  to the
      Second Tier Majority  Owned  Subsidiary  and the First Tier Majority Owned
      Subsidiary shall be deemed to have guaranteed such Credit Extension as set
      forth above in this Section  3(d).  If Thermo  Electron  does receive such
      notice of objection,  then Thermo Electron's Credit Extension shall not be
      deemed guaranteed by the First Tier Majority Owned Subsidiary as set forth
      in this Section 3(d).

      (e) All  payments  required to be made under this  Section 3 by a Majority
      Owned Subsidiary or its wholly-owned subsidiaries, as applicable, shall be
      made within two days after  receipt of notice from  Thermo  Electron.  All
      payments required to be made under this Section 3 by Thermo Electron shall
      be made within two days after  receipt of notice from the  Majority  Owned
      Subsidiary.

      4. Waivers. No delay or omission on the part of either party in exercising
any right  hereunder  shall  operate  as a waiver of such  right or of any other
right of the party, nor shall any delay,  omission or waiver on any one occasion
be  deemed a bar to or  waiver  of the  same or any  other  right on any  future
occasion. The Subsidiary hereby waives demand, notice of prepayment, protest and
all other  demands  and notices in  connection  with the  delivery,  acceptance,
performance,  default or enforcement of the Subsidiary's  obligations hereunder.
The  Subsidiary  hereby  assents to any indulgence and any extension of time for
payment of any indebtedness hereunder granted or permitted by the party.

                                       6
<PAGE>

      5.  Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the laws of the  Commonwealth  of  Massachusetts  applicable to
contracts made and performed  therein without giving effect to any choice of law
provision or rule that would cause the  application of laws of any  jurisdiction
other than the Commonwealth of Massachusetts.

      6.  Severability.  Each provision and agreement herein shall be treated as
separate and independent  from any other provision or agreement herein and shall
be enforceable  notwithstanding the unenforceability of any such other provision
or agreement.

      7. Non-assignability. The rights and obligations of the parties under this
Agreement  shall not be  assigned  by either  party  without  the prior  written
consent of the other party.  Subject to the foregoing,  this Agreement  shall be
binding upon and shall inure to the benefit of the parties and their  respective
successors and assigns.

      8. Other  Agreements.  The parties  agree that,  effective  as of the date
hereof,  each of the  Master  Repurchase  Agreement,  as amended  and  restated,
between  the   Subsidiary   and  Thermo   Electron  and  the  Master   Guarantee
Reimbursement  and  Loan  Agreement,  as  amended  and  restated,   between  the
Subsidiary and Thermo Electron,  is hereby terminated and is of no further force
and effect.




                                       7
<PAGE>






      IN WITNESS WHEREOF,  the parties have caused this Agreement to be executed
by their duly authorized officers as of the date first above written.


                                   THERMO ELECTRON CORPORATION


                                   By:  /s/  Theo Melas-Kyriazi
                                        ----------------------------
                                   Title: Chief Financial Officer


                                   THERMO TERRATECH INC.


                                   By:  /s/  Kenneth J. Apicerno
                                        ----------------------------
                                   Title: Treasurer






















TTT 10854




















                                          Thermo TerraTech Inc.

                                    Consolidated Financial Statements

                                               Fiscal 1999


<PAGE>
<TABLE>
<CAPTION>


Thermo TerraTech Inc.                                                           1999 Financial Statements

                                   Consolidated Statement of Operations
<S>                                                                        <C>        <C>       <C>

                                                                                     Year Ended
                                                                           April 3,   April 4,  March 29,
(In thousands except per share amounts)                                        1999       1998       1997
- ------------------------------------------------------------------------- ---------- ---------- ----------

Revenues (Note 12):
 Service revenues                                                          $310,039   $281,456   $251,384
 Product revenues                                                                 -     17,330     27,119
                                                                           --------   --------    -------

                                                                            310,039    298,786    278,503
                                                                           --------   --------    -------

Costs and Operating Expenses:
 Cost of service revenues                                                   247,610    230,376    204,724
 Cost of product revenues                                                         -     14,735     22,677
 Selling, general, and administrative expenses (Note 8)                      46,224     41,941     39,191
 Restructuring and nonrecurring items (Notes 3 and 13)                       10,217          -      9,282
                                                                           --------   --------    -------

                                                                            304,051    287,052    275,874
                                                                           --------   --------    -------

Operating Income                                                              5,988     11,734      2,629

Interest Income                                                               2,185      4,163      7,253
Interest Expense (includes $162, $593, and $2,638 to parent                  (8,981)   (10,778)   (12,914)
 company)
Gain on Issuance of Stock by Subsidiary (Note 10)                                 -          -      1,475
Gain on Sale of Unconsolidated Subsidiary (Note 3)                                -      3,012          -
Equity in Earnings of Unconsolidated Subsidiary                                   -        174        865
Other Income, Net                                                                 -        209        401
                                                                           --------   --------    -------

Income (Loss) Before Provision for Income Taxes and Minority                   (808)     8,514       (291)
 Interest
Provision for Income Taxes (Note 5)                                           1,786      5,146      1,705
Minority Interest (Income) Expense                                           (1,173)        95     (1,834)
                                                                           --------   --------    -------

Net Income (Loss)                                                          $ (1,421)  $  3,273    $  (162)
                                                                           ========   ========    =======

Earnings (Loss) per Share (Note 16)
 Basic                                                                     $  (.07)   $    .18    $  (.01)
                                                                           =======    ========    =======


 Diluted                                                                   $  (.07)   $    .17    $  (.01)
                                                                           =======    ========    =======

Weighted Average Shares (Note 16)
 Basic                                                                       19,402     18,700     18,090
                                                                           ========   ========    =======

   Diluted                                                                   19,402     18,978     18,090
                                                                           ========   ========    =======







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


                                       3
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

                                        Consolidated Balance Sheet
                                                                                      April 3,   April 4,
(In thousands)                                                                            1999       1998
- ----------------------------------------------------------------------------------- ----------- ---------

Assets
Current Assets:
 Cash and cash equivalents (includes $41,667 and $29,583 under                        $ 43,013    $34,711
   repurchase agreements with parent company; Note 19)
 Available-for-sale investments, at quoted market value (amortized cost                      -      2,003
   of $2,008; Note 2)
 Short-term held-to-maturity investments, at amortized cost (quoted                          -     13,939
   market value of $13,979; Note 2)
 Accounts receivable, less allowances of $3,577 and $4,450                              59,377     60,050
 Unbilled contract costs and fees                                                       21,207     20,547
 Inventories                                                                             1,869      1,498
 Prepaid and refundable income taxes (Note 5)                                            6,946      6,224
 Prepaid expenses                                                                        3,196      3,810
                                                                                      --------   --------

                                                                                       135,608    142,782
                                                                                      --------   --------

Property, Plant, and Equipment, at Cost, Net                                            91,514     91,709
                                                                                      --------   --------

Other Assets                                                                            15,949     18,227
                                                                                      --------   --------

Cost in Excess of Net Assets of Acquired Companies (Notes 3 and 13)                    108,627    107,808
                                                                                      --------   --------

                                                                                      $351,698   $360,526
                                                                                      ========   ========


                                       4
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

                                  Consolidated Balance Sheet (continued)
                                                                                      April 3,   April 4,
(In thousands except share amounts)                                                       1999       1998
- ----------------------------------------------------------------------------------- ----------- ---------

Liabilities and Shareholders' Investment
Current Liabilities:
 Notes payable and current maturities of long-term obligations                        $ 17,618    $27,165
   (includes $9,228 under overdraft facility with related party; Note 6)
 Accounts payable                                                                       17,404     17,728
 Accrued payroll and employee benefits                                                  12,771     11,359
 Deferred revenue                                                                        3,908      3,394
 Other accrued expenses (Note 13)                                                       14,342     11,476
 Due to parent company and affiliated companies                                          2,522      2,341
                                                                                      --------   --------

                                                                                        68,565     73,463
                                                                                      --------   --------

Deferred Income Taxes (Note 5)                                                           3,538      2,901
                                                                                      --------   --------

Other Deferred Items                                                                     1,076      1,049
                                                                                      --------   --------

Long-term Obligations (Notes 6 and 11):
 Subordinated convertible debentures (includes $4,695 and $3,000 of                    156,799    149,800
   related-party debt)
 Other                                                                                   1,818      3,344
                                                                                      --------   --------

                                                                                       158,617    153,144
                                                                                      --------   --------

Minority Interest                                                                       27,745     32,839
                                                                                      --------   --------

Commitments and Contingencies (Note 7)

Shareholders' Investment (Notes 4 and 9):
 Common stock, $.10 par value, 75,000,000 shares authorized; 19,583,773                  1,958      1,958
   shares issued
 Capital in excess of par value                                                         70,633     70,437
 Retained earnings                                                                      25,898     27,319
 Treasury stock at cost, 543,319 and 51,188 shares                                      (4,130)      (484)
 Deferred compensation (Note 4)                                                           (252)         -
 Accumulated other comprehensive items                                                  (1,950)    (2,100)
                                                                                      --------   --------

                                                                                        92,157     97,130
                                                                                      --------   --------

                                                                                      $351,698   $360,526
                                                                                      ========   ========







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

                                       5
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

                                   Consolidated Statement of Cash Flows
                                                                                    Year Ended
                                                                           April 3,   April 4,  March 29,
(In thousands)                                                                 1999       1998       1997
- ------------------------------------------------------------------------- ---------- ----------- ---------

Operating Activities
 Net income (loss)                                                         $ (1,421)  $  3,273    $  (162)
 Adjustments to reconcile net income (loss) to net cash provided
   by operating activities:
     Depreciation and amortization                                           16,823     14,784     12,900
     Noncash restructuring and nonrecurring items (Note 13)                   8,122          -      9,282
     Gain on sale of unconsolidated subsidiary (Note 3)                           -     (3,012)         -
     Equity in earnings of unconsolidated subsidiary                              -       (174)      (865)
     Minority interest (income) expense                                      (1,173)        95     (1,834)
     Provision for losses on accounts receivable                              2,085      1,141        625
     Other noncash items                                                        199        327        430
     Increase (decrease) in deferred income taxes                               443     (1,583)       (43)
     Gain on issuance of stock by subsidiary (Note 10)                            -          -     (1,475)
     Changes in current accounts, excluding the effects of acquisitions and
       dispositions:
        Accounts receivable                                                    (643)   (11,154)    (6,818)
        Inventories and unbilled contract costs and fees                     (2,026)    (3,353)    (7,784)
        Other current assets                                                   (176)     1,715        403
        Accounts payable                                                         55      5,507        895
        Other current liabilities                                             7,653     (1,038)     3,399
                                                                           --------   --------   --------

          Net cash provided by operating activities                          29,941      6,528      8,953
                                                                           --------   --------   --------

Investing Activities
 Acquisitions, net of cash acquired (Note 3)                                   (643)   (12,746)    (5,156)
 Purchases of available-for-sale investments                                      -          -    (38,913)
 Proceeds from sale and maturities of available-for-sale                      2,006     16,372     29,822
   investments (Note 2)
 Proceeds from maturity of held-to-maturity investments (Note 2)             14,065     13,935          -
 Purchases of property, plant, and equipment                                (17,415)   (18,460)   (15,426)
 Proceeds from sale of businesses (Note 3)                                        -     19,722        347
 Issuances of notes receivable                                                    -       (569)         -
 Purchases of other assets                                                   (1,570)    (1,993)      (450)
 Other, net                                                                     474      2,464      1,356
                                                                           --------   --------   --------

          Net cash provided by (used in) investing activities              $ (3,083)  $ 18,725   $(28,420)
                                                                           --------   --------   --------



                                       6
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

                             Consolidated Statement of Cash Flows (continued)
                                                                                     Year Ended
                                                                           April 3,   April 4,  March 29,
(In thousands)                                                                 1999       1998       1997
- ------------------------------------------------------------------------- ---------- ----------- ---------

Financing Activities
 Net proceeds from issuance of subordinated convertible debentures         $      -   $      -   $112,398
 Repayment of notes payable to parent company                                     -    (38,000)   (50,000)
 Proceeds from issuance of Company and subsidiaries' common                      58      1,148      5,346
   stock (Note 10)
 Repurchase of Company and subsidiaries' common stock and                    (3,390)    (7,355)   (14,984)
   subordinated convertible debentures
 Issuance of short-term obligations                                               -      6,171        803
 Repayment of notes payable (Note 2)                                        (14,748)   (14,878)      (736)
 Dividends paid by subsidiary to minority shareholders                         (805)      (751)      (847)
 Other, net                                                                     425          -       (266)
                                                                           --------   --------   --------

          Net cash provided by (used in) financing activities               (18,460)   (53,665)    51,714
                                                                           --------   --------   --------

Exchange Rate Effect on Cash                                                    (96)       (49)      (257)
                                                                           --------   --------   --------

Increase (Decrease) in Cash and Cash Equivalents                              8,302    (28,461)    31,990
Cash and Cash Equivalents at Beginning of Year                               34,711     63,172     31,182
                                                                           --------   --------   --------

Cash and Cash Equivalents at End of Year                                   $ 43,013   $ 34,711   $ 63,172
                                                                           ========   ========   ========

See Note 14 for supplemental cash flow information.























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

                                       7
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

               Consolidated Statement of Comprehensive Income and Shareholders' Investment
                                                                                             Year Ended
                                                                           April 3,    April 4,  March 29,
(In thousands)                                                                 1999        1998       1997
- ------------------------------------------------------------------------- ----------- ---------- ---------

Comprehensive Income
Net Income (Loss)                                                           $(1,421)    $ 3,273    $  (162)
                                                                            -------     -------    -------

Other Comprehensive Items:
 Foreign currency translation adjustment                                        147      (1,071)    (1,661)
 Unrealized gains (losses) on available-for-sale investments                      3         (10)        15
                                                                            -------     -------    -------

                                                                                150      (1,081)    (1,646)
                                                                            -------     -------    -------

Minority Interest Income (Expense)                                             (284)        461        724
                                                                            -------     -------    -------

                                                                            $(1,555)    $ 2,653    $(1,084)
                                                                            =======     =======    =======

Shareholders' Investment
Common Stock, $.10 Par Value:
 Balance at beginning of year                                               $ 1,958     $ 1,830    $ 1,760
 Issuance of stock under employees' and directors' stock plans                    -           -         24
 Conversions of subordinated convertible debentures                               -         128         46
                                                                            -------     -------    -------

 Balance at end of year                                                       1,958       1,958      1,830
                                                                            -------     -------    -------

Capital in Excess of Par Value:
 Balance at beginning of year                                                70,437      62,610     59,419
 Activity under employees' and directors' stock plans                          (130)     (5,490)       264
 Tax benefit related to employees' and directors' stock plans                   181         655        461
 Effect of outstanding put rights                                            (1,271)          -          -
 Conversions of subordinated convertible debentures (Note 6)                      -      13,092      4,766
 Effect of majority-owned subsidiaries' equity transactions                   1,416        (430)    (2,300)
                                                                            -------     -------    -------

 Balance at end of year                                                      70,633      70,437     62,610
                                                                            -------     -------    -------

Retained Earnings:
 Balance at beginning of year                                                27,319      24,046     24,474
 Net income (loss)                                                           (1,421)      3,273       (162)
 Metal Treating, Inc. transfer of cash to parent company (Note 3)                 -           -       (266)
                                                                            -------     -------    -------

 Balance at end of year                                                      25,898      27,319     24,046
                                                                            -------     -------    -------

Treasury Stock:
 Balance at beginning of year                                                  (484)     (3,941)      (410)
 Activity under employees' and directors' stock plans                           411       6,637        260
 Purchases of Company common stock                                           (4,057)     (3,180)    (3,791)
                                                                            -------     -------    -------

 Balance at end of year                                                     $(4,130)    $  (484)   $(3,941)
                                                                            -------     -------    -------


                                       8
<PAGE>

Thermo TerraTech Inc.                                                           1999 Financial Statements

         Consolidated Statement of Comprehensive Income and Shareholders' Investment (continued)
                                                                                             Year Ended
                                                                           April 3,    April 4,  March 29,
(In thousands)                                                                 1999        1998       1997
- ------------------------------------------------------------------------- ----------- ---------- ---------

Deferred Compensation (Note 4):
 Balance at beginning of year                                               $     -     $     -    $     -
 Activity under employees' stock plans                                         (252)          -          -
                                                                            -------     -------    -------

 Balance at end of year                                                        (252)          -          -
                                                                            -------     -------    -------

Accumulated Other Comprehensive Items:
 Balance at beginning of year                                                (2,100)     (1,019)       627
 Other comprehensive items                                                      150      (1,081)    (1,646)
                                                                            -------     -------    -------

 Balance at end of year                                                      (1,950)     (2,100)    (1,019)
                                                                            -------     -------    -------

                                                                            $92,157     $97,130    $83,526
                                                                            =======     =======    =======




















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

                                       9
<PAGE>

Thermo TerraTech Inc.                                  1999 Financial Statements

                   Notes to Consolidated Financial Statements

1.    Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations
     Thermo  TerraTech  Inc.  (the  Company)  provides  industrial   outsourcing
services and manufacturing support encompassing a broad range of
specializations. The Company operates in four segments: environmental-liability
management, engineering and design, laboratory testing, and metal treating.

Relationship with Thermo Electron Corporation
     The Company was incorporated on May 30, 1986, as an indirect,  wholly owned
subsidiary of Thermo Electron Corporation. As of April 3, 1999, Thermo Electron
owned 16,605,831 shares of the Company's common stock, representing 87% of such
stock outstanding.
     Thermo Electron has announced a proposed  reorganization  involving certain
of Thermo Electron's subsidiaries, including the Company. Under this plan, the
Company and its majority-owned subsidiaries, ThermoRetec Corporation (formerly
Thermo Remediation Inc.) and The Randers Killam Group Inc. (formerly The Randers
Group Incorporated), would be merged into Thermo Electron (Note 17).

Principles of Consolidation
      The accompanying financial statements include the accounts of the Company;
its wholly owned subsidiaries; its majority-owned public subsidiaries,
ThermoRetec and Randers Killam; and its majority-owned, privately held Thermo
EuroTech N.V. subsidiary. All material intercompany accounts and transactions
have been eliminated. The Company accounted for its investment in a business in
which it owned 50% using the equity method. In October 1997, the Company sold
this investment (Note 3).

Fiscal Year
      The Company has adopted a fiscal year ending the Saturday nearest March
31. References to fiscal 1999, 1998, and 1997 are for the fiscal years ended
April 3, 1999, April 4, 1998, and March 29, 1997, respectively. Fiscal years
1999 and 1997 each included 52 weeks; fiscal 1998 included 53 weeks.

Revenue Recognition
      For the majority of its operations, the Company recognizes revenues upon
completion of the services it renders. Revenues and profits on substantially all
contracts are recognized using the percentage-of-completion method. Revenues
recorded under the percentage-of-completion method were $109,798,000 in fiscal
1999, $117,464,000 in fiscal 1998, and $113,481,000 in fiscal 1997. The
percentage of completion is determined by relating either the actual costs or
actual labor incurred to date to management's estimate of total costs or total
labor, respectively, to be incurred on each contract. If a loss is indicated on
any contract in process, a provision is made currently for the entire loss. The
Company's contracts generally provide for billing of customers upon the
attainment of certain milestones specified in each contract. Revenues earned on
contracts in process in excess of billings are classified as unbilled contract
costs and fees in the accompanying balance sheet. There are no significant
amounts included in the accompanying balance sheet that are not expected to be
recovered from existing contracts at current contract values, or that are not
expected to be collected within one year, including amounts that are billed but
not paid under retainage provisions. Amounts billed in excess of revenues
recognized are included in other accrued expenses in the accompanying balance
sheet. Revenues from soil-remediation services are recognized as soil is
processed and the Company bills customers upon receipt of contaminated soil at
its remediation centers.

                                       10
<PAGE>

1.    Nature of Operations and Summary of Significant Accounting Policies (continued)

Gain on Issuance of Stock by Subsidiary
      At the time a subsidiary sells its stock to unrelated parties at a price
in excess of its book value, the Company's net investment in that subsidiary
increases. If at that time the subsidiary is an operating entity and not engaged
principally in research and development, the Company records the increase as a
gain (Note 10).
      If gains have been recognized on issuances of a subsidiary's stock and
shares of the subsidiary are subsequently repurchased either by the subsidiary,
the Company, or Thermo Electron, gain recognition does not occur on issuances
subsequent to the date of a repurchase until such time as shares have been
issued in an amount equivalent to the number of repurchased shares. Such
transactions are reflected as equity transactions and the net effect of these
transactions is reflected in the accompanying statement of comprehensive income
and shareholders' investment as effect of majority-owned subsidiaries' equity
transactions.

Equity in Earnings of Unconsolidated Subsidiary
      Equity in earnings of unconsolidated subsidiary in the accompanying
statement of operations represents the Company's proportionate share of income
from a 50% investment in RETEC/TETRA L.C., acquired in December 1995 through
ThermoRetec's acquisition of RETEC. In October 1997, ThermoRetec sold its 50%
limited-liability interest in RETEC/TETRA to TETRA Thermal, Inc. (Note 3).
      For the year ended December 31, 1996, RETEC/TETRA reported revenues of
$12,066,000, cost of revenues of $9,040,000, gross profit of $3,026,000, and net
income of $981,000.

Stock-based Compensation Plans
      The Company applies Accounting Principles Board Opinion (APB) No. 25,
"Accounting for Stock Issued to Employees," and related interpretations in
accounting for its stock-based compensation plans (Note 4). Accordingly, no
accounting recognition is given to stock options granted at fair market value
until they are exercised. Upon exercise, net proceeds, including tax benefits
realized, are credited to shareholders' investment.

Income Taxes
      The Company and Thermo Electron have a tax allocation agreement under
which the Company and certain of its subsidiaries, exclusive of foreign
operations, are included in Thermo Electron's consolidated federal and certain
state income tax returns. The agreement provides that in years in which the
Company has taxable income, it will pay to Thermo Electron amounts comparable to
the taxes the Company would have paid if it had filed separate tax returns. If
Thermo Electron's equity ownership of the Company were to drop below 80%, the
Company would be required to file its own federal income tax return.
      In accordance with Statement of Financial Accounting Standards (SFAS) No.
109, "Accounting for Income Taxes," the Company recognizes deferred income taxes
based on the expected future tax consequences of differences between the
financial statement basis and the tax basis of assets and liabilities calculated
using enacted tax rates in effect for the year in which the differences are
expected to be reflected in the tax return.

Earnings (Loss) per Share
      Basic earnings (loss) per share have been computed by dividing net income
(loss) by the weighted average number of shares outstanding during the year.
Except where the result would be antidilutive, diluted earnings (loss) per share
have been computed assuming the exercise of stock options and warrants, as well
as their related income tax effects. Diluted earnings (loss) per share for all
periods exclude the effect of assuming the conversion of convertible obligations
and the elimination of the related interest expense and the exercise of put
rights, because the result would be antidilutive.

                                       11
<PAGE>

1.    Nature of Operations and Summary of Significant Accounting Policies (continued)

Cash and Cash Equivalents
      At fiscal year-end 1999 and 1998, $40,625,000 and $29,583,000,
respectively, of the Company's cash equivalents were invested in a repurchase
agreement with Thermo Electron. Under this agreement, the Company in effect
lends excess cash to Thermo Electron, which Thermo Electron collateralizes with
investments principally consisting of corporate notes, U.S. government-agency
securities, commercial paper, money market funds, and other marketable
securities, in the amount of at least 103% of such obligation. The Company's
funds subject to the repurchase agreement are readily convertible into cash by
the Company. 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 (Note 19).
       At fiscal year-end 1999, $1,042,000 of the Company's cash equivalents,
denominated in Dutch guilders, were invested in a repurchase agreement with a
wholly owned subsidiary of Thermo Electron. Under this agreement, the Company in
effect lends excess cash to the subsidiary, which Thermo Electron collateralizes
with investments principally consisting of corporate notes, U.S.
government-agency securities, commercial paper, money market funds, and other
marketable securities, in the amount of at least 103% of such obligation. The
Company's funds subject to the repurchase agreement are readily convertible into
cash by the Company. The repurchase agreement earns a rate based on the
Netherlands market rates, set at the beginning of each month.
      At fiscal year-end 1999 and 1998, the Company's cash equivalents also
included investments in a money market fund, which has an original maturity of
three months or less. Cash equivalents are carried at cost, which approximates
market value.

Inventories
      Inventories are stated at the lower of cost (on an average-cost basis) or
market value and include materials, labor, and overhead. The components of
inventories are:

(In thousands)                                                                            1999       1998
- ----------------------------------------------------------------------------------- ----------- ----------

Raw Materials and Supplies                                                            $    640    $   618
Work in Process and Finished Goods                                                       1,229        880
                                                                                      --------    -------

                                                                                      $  1,869    $ 1,498
                                                                                      ========    =======

Property, Plant, and Equipment
      The costs of additions and improvements are capitalized, while maintenance
and repairs are charged to expense as incurred. The Company provides for
depreciation and amortization primarily using the straight-line method over the
estimated useful lives of the property as follows: buildings and improvements, 5
to 40 years; machinery and equipment, 2 to 15 years; and leasehold improvements,
the shorter of the term of the lease or the life of the asset. Soil-remediation
units, which accounted for 8% and 12% of the Company's machinery and equipment,
net, at fiscal year-end 1999 and 1998, respectively, are depreciated based on an
hourly rate that is computed by estimating total hours of operation for each
unit. Property, plant, and equipment consists of:

(In thousands)                                                                            1999      1998
- ----------------------------------------------------------------------------------- ----------- ---------

Land                                                                                  $  7,741    $ 7,743
Buildings                                                                               42,161     38,785
Machinery, Equipment, and Leasehold Improvements                                       101,317     95,840
                                                                                      --------    -------

                                                                                       151,219    142,368
Less:  Accumulated Depreciation and Amortization                                        59,705     50,659
                                                                                      --------    -------

                                                                                      $ 91,514    $91,709
                                                                                      ========    =======


                                       12
<PAGE>

1.    Nature of Operations and Summary of Significant Accounting Policies (continued)

Other Assets
      Other assets in the accompanying balance sheet includes the costs of
acquired technology and other specifically identifiable intangible assets that
are being amortized using the straight-line method over their estimated useful
lives, which range from 5 to 20 years. These assets were $3,291,000 and
$5,212,000, net of accumulated amortization of $6,771,000 and $5,716,000, at
fiscal year-end 1999 and 1998, respectively. In fiscal 1999, the Company wrote
off $1,169,000 of other assets in connection with restructuring actions (Note
13).

Cost in Excess of Net Assets of Acquired Companies
      The excess of cost over the fair value of net assets of acquired companies
is amortized using the straight-line method over periods ranging from 20 to 40
years. Accumulated amortization was $16,725,000 and $13,651,000 at fiscal
year-end 1999 and 1998, respectively. The Company assesses the future useful
life of this asset whenever events or changes in circumstances indicate that the
current useful life has diminished (Note 13). The Company considers the future
undiscounted cash flows of the acquired companies in assessing the
recoverability of this asset. If impairment has occurred, any excess of carrying
value over fair value is recorded as a loss.

Foreign Currency
      All assets and liabilities of the Company's foreign subsidiaries are
translated at year-end exchange rates, and revenues and expenses are translated
at average exchange rates for the year in accordance with SFAS No. 52, "Foreign
Currency Translation." Resulting translation adjustments are reflected in the
"Accumulated other comprehensive items" component of shareholders' investment.
Foreign currency transaction gains and losses are included in the accompanying
statement of operations and are not material for the three years presented.

Comprehensive Income
      During the first quarter of fiscal 1999, the Company adopted SFAS No. 130,
"Reporting Comprehensive Income." This pronouncement sets forth requirements for
disclosure of the Company's comprehensive income and accumulated other
comprehensive items. In general, comprehensive income combines net income and
"other comprehensive items," which represents certain amounts that are reported
as components of shareholders' investment in the accompanying balance sheet,
including foreign currency translation adjustments and unrealized net of tax
gains and losses on available-for-sale investments. At fiscal year-end 1999, the
balance of accumulated other comprehensive items represents the Company's
cumulative translation adjustment. At fiscal year-end 1998, the balance also
includes net unrealized losses on available-for-sale investments of $3,000.

Use of Estimates
      The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities,
disclosure of contingent assets and liabilities at the date of the financial
statements, and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

Presentation
      Certain amounts in fiscal 1998 and 1997 have been reclassified to conform
to the presentation in the fiscal 1999 financial statements.

                                       13
<PAGE>

2.    Available-for-sale and Held-to-maturity Investments

      The Company's debt securities are considered available-for-sale
investments in the accompanying balance sheet and are carried at market value,
with the difference between cost and market value, net of related tax effects,
recorded in the "Accumulated other comprehensive items" component of
shareholders' investment. The aggregate market value and cost basis of
available-for-sale investments in the accompanying fiscal 1998 balance sheet,
which represents investments in corporate bonds, were $2,003,000 and $2,008,000,
respectively. The gross unrealized loss on these investments was $5,000.
      The cost of available-for-sale investments that were sold was based on
specific identification in determining realized gains and losses recorded in the
accompanying statement of operations. In fiscal 1997, the Company recorded gross
realized gains of $204,000 and gross realized losses of $9,000 relating to the
sale of available-for-sale investments.
      In order to secure the Company's obligation to the former owner of a
business acquired in fiscal 1995, the Company purchased U.S. treasury bonds. In
May 1998 and February 1998, $13,939,000 and $13,935,000 principal amounts,
respectively, of the U.S. treasury bonds matured and the proceeds were used to
repay the Company's zero coupon promissory note to the seller. The unmatured
portion of these securities was classified as short-term held-to-maturity
investments in the accompanying fiscal 1998 balance sheet and was carried at
amortized cost.

3.    Acquisitions and Dispositions

Acquisitions
      During fiscal 1999, the Company, through ThermoRetec, acquired one company
for $576,000 in cash and paid an additional $67,000 for a post-closing
adjustment relating to a fiscal 1998 acquisition.
      In May 1997, the Company purchased a controlling interest in The Randers
Group Incorporated, a publicly traded provider of design, engineering, project
management, and construction services for industrial clients in the
manufacturing, pharmaceutical, and chemical-processing industries. The Company
purchased 1,420,000 shares of Randers' common stock from certain members of
Randers' management, and 84,000 shares from Thermo Power Corporation, an
affiliate of the Company, at a price of $3.125 per share, for an aggregate cost
of $4,700,000. Following these transactions, the Company owned approximately
53.3% of Randers' outstanding common stock. In addition, Thermo Electron owned
approximately 8.9% of Randers' outstanding common stock.
      Subsequently, in September 1997, the Company entered into a definitive
agreement to transfer The Killam Group Inc., its wholly owned engineering and
consulting businesses, to Randers in exchange for newly issued shares of
Randers' common stock. Effective April 4, 1998, the agreement was amended to
provide that the price for these businesses would equal $70,644,407, the book
value of the transferred businesses as of April 4, 1998. The number of new
shares of Randers' common stock issued to the Company equaled such book value
divided by $3.125, or 22,606,210 shares. In January 1999, the Randers
shareholders approved the listing of these shares on the American Stock Exchange
and an amendment to Randers' certificate of incorporation changing Randers' name
to The Randers Killam Group Inc. Upon such issuance, the Company and Thermo
Electron owned approximately 94.8% and 1.0%, respectively, of Randers Killam's
outstanding common stock.
      In addition, during fiscal 1998, ThermoRetec made three acquisitions for
an aggregate purchase price of $5,665,000 in cash and 459,613 shares of
ThermoRetec's common stock, valued at $2,850,000. In fiscal 1998, Thermo
EuroTech made an acquisition of 70% of the outstanding shares of a business for
$4,400,000 in cash and a commitment to issue 69,200 shares of Thermo EuroTech's
common stock valued at $275,000. As of April 3, 1999, these shares had not been
issued.
      In October 1996, the Company acquired Metal Treating, Inc. from Thermo
Electron in exchange for $1,600,000 in cash. Metal Treating provides heat
treating services, including carburizing, vacuum hardening, silver and copper
brazing, and aluminum heat treating, primarily in the Milwaukee and southeastern
Wisconsin areas. Because the Company and Metal Treating were deemed for
accounting purposes to be under control of their common majority owner, Thermo
Electron, the transaction has been accounted for at historical cost in a manner
similar to a pooling-of-interests and the results of Metal Treating are included
in the accompanying statement of operations from the beginning of fiscal 1997.

                                       14
<PAGE>

3.    Acquisitions and Dispositions (continued)

      In addition, during fiscal 1997, the Company, directly and through
ThermoRetec, acquired two companies for an aggregate of $3,865,000 in cash,
311,040 shares of ThermoRetec's common stock valued at $2,006,000, and the
issuance of $1,300,000 of short- and long-term obligations.
      These acquisitions, except for Metal Treating, have been accounted for
using the purchase method of accounting, and their results have been included in
the accompanying financial statements from their respective dates of
acquisition. The aggregate cost of these acquisitions exceeded the estimated
fair value of the acquired net assets by $27,181,000, which is being amortized
over periods ranging from 20 to 40 years. Allocation of the purchase price for
these acquisitions was based on estimates of the fair value of the net assets
acquired. Pro forma data is not presented since the acquisitions were not
material to the Company's results of operations.

Dispositions
      In October 1997, ThermoRetec sold its 50% limited-liability interest in
RETEC/TETRA L.C. to TETRA Thermal, Inc. for $8,825,000 in cash. The Company
realized a pretax gain of $3,012,000 on the sale, which is classified as "gain
on sale of unconsolidated subsidiary" in the accompanying statement of
operations.
      In addition, in October 1997, the Company sold substantially all of the
assets of its Holcroft Division, its thermal-processing equipment business,
excluding certain accounts receivable, to Holcroft L.L.C., an affiliate of
Madison Capital Partners. The sale price for the transferred assets consisted of
$10,897,000 in cash, two promissory notes for principal amounts aggregating
$2,881,000, which is generally payable in annual installments through fiscal
2003, and the assumption by Holcroft L.L.C. of certain liabilities of the
Holcroft Division. After recording a post-closing purchase price adjustment, the
Company incurred a nominal loss on the sale. This business represented the
Company's product revenues in the accompanying statement of operations and
contributed $893,000 and $1,765,000 of operating income in fiscal 1998 and 1997,
respectively.
      In fiscal 1997, the Company sold its J. Amerika division, resulting in a
loss of $1,482,000, which is included in restructuring and other nonrecurring
items in the accompanying statement of operations. J. Amerika's revenues and
operating loss were $3,970,000 and $552,000, respectively, in fiscal 1997.

4.    Employee Benefit Plans

Stock-based Compensation Plans

Stock Option Plans
      The Company has stock-based compensation plans for its key employees,
directors, and others. Two of these plans permit the grant of nonqualified and
incentive stock options. A third plan permits the grant of a variety of stock
and stock-based awards as determined by the human resources committee of the
Company's Board of Directors (the Board Committee), including restricted stock,
stock options, stock bonus shares, or performance-based shares. The option
recipients and the terms of options granted under these plans are determined by
the Board Committee. Generally, options granted to date are exercisable
immediately, but are subject to certain transfer restrictions and the right of
the Company to repurchase shares issued upon exercise of the options at the
exercise price, upon certain events. The restrictions and repurchase rights
generally lapse ratably over a one- to ten-year period, depending on the term of
the option, which may range from five to twelve years. Nonqualified stock
options may be granted at any price determined by the Board Committee, although
incentive stock options must be granted at not less than the fair market value
of the Company's stock on the date of grant. Generally, all options have been
granted at fair market value. The Company also has a directors' stock option
plan that provides for the grant of stock options to outside directors pursuant
to a formula approved by the Company's shareholders. Options awarded under this
plan are exercisable six months after the date of grant and expire three to
seven years after the date of grant. In addition to the Company's stock-based
compensation plans, certain officers and key employees may also participate in
the stock-based compensation plans of Thermo Electron.

                                       15
<PAGE>

4.    Employee Benefit Plans (continued)

      In November 1998, the Company's employees, excluding its officers and
directors, were offered the opportunity to exchange previously granted options
to purchase shares of Company common stock for an amount of options equal to
half of the number of options previously held, exercisable at a price equal to
the fair market value at the time of the exchange offer. Holders of options to
acquire 1,182,000 shares at a weighted average exercise price of $8.80 elected
to participate in this exchange and, as a result, received options to purchase
591,000 shares of Company common stock at $4.50 per share, which are included in
the fiscal 1999 grants in the table below. The other terms of the new options
are the same as the exchanged options except that the holders may not sell
shares purchased pursuant to such new options for six months from the exchange
date. The options exchanged were canceled by the Company.
      In February 1999, the Company awarded 50,400 shares of restricted Company
common stock to certain key employees. The shares had an aggregate value of
$252,000 and vest three years from the date of award, assuming continued
employment, with certain exceptions. The Company has recorded the fair value of
the restricted stock as deferred compensation in the accompanying balance sheet
and is amortizing such amount over the vesting period.
      A summary of the Company's stock option activity is:
</TABLE>
<TABLE>
<CAPTION>

                                                       1999               1998                 1997
                                               ------------------  ------------------  ------------------

                                                         Weighted            Weighted            Weighted
                                                Number    Average   Number    Average    Number   Average
                                                    of   Exercise       of   Exercise        of  Exercise
(Shares in thousands)                           Shares      Price   Shares      Price    Shares     Price
- --------------------------------------------- -------- ---------- -------- ---------- --------- ---------

<S>                                           <C>       <C>       <C>       <C>        <C>       <C>
Options Outstanding, Beginning of Year           1,986     $ 8.87    2,558     $ 6.99     2,561     $ 6.13
 Granted                                         1,111       4.78      296       7.67       288      10.10
 Exercised                                           -          -     (696)      1.36      (242)      1.16
 Forfeited                                        (158)      8.28     (172)      9.35       (49)      8.79
 Canceled due to exchange                       (1,182)      8.80        -          -         -          -
                                                 -----               -----               ------

Options Outstanding, End of Year                 1,757     $ 6.38    1,986     $ 8.87     2,558     $ 6.99
                                                 =====     ======    =====     ======    ======     ======


Options Exercisable                              1,757     $ 6.38    1,986     $ 8.87     2,558     $ 6.99
                                                 =====     ======    =====     ======    ======     ======


Options Available for Grant                        351                 327                  483
                                                 =====               =====               ======

      A summary of the status of the Company's stock options at April 3, 1999,
is:

                                                             Options Outstanding and Exercisable
                                                      ---------------------------------------------------
Range of Exercise Prices                                   Number            Weighted           Weighted
                                                               of             Average            Average
                                                           Shares           Remaining           Exercise
                                                   (In thousands)    Contractual Life              Price
- --------------------------------------------- -------------------- ------------------- ------------------

$  4.16 - $  5.85                                           1,065           6.9 years              $4.74
   5.86 -    7.55                                              55           4.5 years               6.62
   7.56 -    9.24                                             230           3.6 years               8.40
   9.25 -   10.93                                             407           4.6 years               9.49
                                                           ------

$  4.16 - $ 10.93                                           1,757           5.9 years              $6.38
                                                           ======


                                       16
<PAGE>

4.    Employee Benefit Plans (continued)

Employee Stock Purchase Program
      Substantially all of the Company's full-time employees are eligible to
participate in an employee stock purchase program sponsored by the Company and
Thermo Electron. Prior to November 1, 1998, the applicable shares of common
stock could be purchased at the end of a 12-month period at 95% of the fair
market value at the beginning of the period and the shares purchased were
subject to a six-month resale restriction. Effective November 1, 1998, the
applicable shares of common stock may be purchased at 85% of the lower of the
fair market value at the beginning or end of the plan year, and the shares
purchased are subject to a one-year resale restriction. Shares are purchased
through payroll deductions of up to 10% of each participating employee's gross
wages. No shares were issued under this program during fiscal 1999. During
fiscal 1998 and 1997, the Company issued 13,976 shares and 25,053 shares,
respectively, of its common stock under this program.

Pro Forma Stock-based Compensation Expense
      In October 1995, the Financial Accounting Standards Board issued SFAS No.
123, "Accounting for Stock-based Compensation," which sets forth a fair-value
based method of recognizing stock-based compensation expense. As permitted by
SFAS No. 123, the Company has elected to continue to apply APB No. 25 to account
for its stock-based compensation plans. Had compensation cost for awards granted
after fiscal 1995 under the Company's stock-based compensation plans been
determined based on the fair value at the grant dates consistent with the method
set forth under SFAS No. 123, the effect on the Company's net income (loss) and
earnings (loss) per share would have been:

(In thousands except per share amounts)                                        1999        1998      1997
- ----------------------------------------------------------------------- ----------- ----------- ----------

Net Income (Loss):
 As reported                                                                $(1,421)    $ 3,273   $  (162)
 Pro forma                                                                   (3,172)      2,218      (866)

Basic Earnings (Loss) per Share:
 As reported                                                                   (.07)        .18      (.01)
 Pro forma                                                                     (.16)        .12      (.05)

Diluted Earnings (Loss) per Share:
 As reported                                                                   (.07)        .17      (.01)
 Pro forma                                                                     (.16)        .12      (.05)

      Because the method prescribed by SFAS No. 123 has not been applied to
options granted prior to April 2, 1995, the resulting pro forma compensation
expense may not be representative of the amount to be expected in future years.
Pro forma compensation expense for options granted is reflected over the vesting
period; therefore, future pro forma compensation expense may be greater as
additional options are granted.
      The weighted average fair value per share of options granted was $1.45,
$2.27, and $4.15 in fiscal 1999, 1998, and 1997, respectively. The fair value of
each option grant was estimated on the grant date using the Black-Scholes
option-pricing model with the following weighted-average assumptions:
</TABLE>
<TABLE>
<CAPTION>
<S>                                                                      <C>         <C>        <C>

                                                                              1999        1998        1997
- ----------------------------------------------------------------------- ----------- ----------- ---------

Volatility                                                                     28%         27%         29%
Risk-free Interest Rate                                                       4.9%        5.6%        6.2%
Expected Life of Options                                                 4.0 years   3.6 years   6.1 years


                                       17
<PAGE>

4.    Employee Benefit Plans (continued)

      The Black-Scholes option-pricing model was developed for use in estimating
the fair value of traded options that have no vesting restrictions and are fully
transferable. In addition, option-pricing models require the input of highly
subjective assumptions, including expected stock price volatility. Because the
Company's employee stock options have characteristics significantly different
from those of traded options, and because changes in the subjective input
assumptions can materially affect the fair value estimate, in management's
opinion, the existing models do not necessarily provide a reliable single
measure of the fair value of its employee stock options.

401(k) Savings Plan
      The majority of the Company's full-time U.S. employees are eligible to
participate in Thermo Electron's 401(k) savings plan. Contributions to this
401(k) savings plan are made by both the employee and the Company. Company
contributions are based upon the level of employee contributions. For this plan,
the Company contributed and charged to expense $650,000, $955,000, and $975,000
in fiscal 1999, 1998, and 1997, respectively.

Other Retirement Plans
      Certain of the Company's subsidiaries offer other retirement plans in lieu
of participation in the Thermo Electron 401(k) savings plan. Company
contributions to these plans are based on formulas determined by the Company.
For these plans, the Company contributed and charged to expense $4,258,000,
$3,585,000, and $2,872,000 in fiscal 1999, 1998, and 1997, respectively.

5.    Income Taxes

      The components of income (loss) before provision for income taxes and
minority interest are:

(In thousands)                                                               1999        1998         1997
- --------------------------------------------------------------------- ----------- ------------ -----------

Domestic                                                                  $   179     $ 8,812      $ 3,149
Foreign                                                                      (987)       (298)      (3,440)
                                                                          -------     -------      -------

                                                                          $  (808)    $ 8,514      $  (291)
                                                                          =======     =======      =======

      The Company's foreign results of operations prior to fiscal 1998 include
losses associated with its J. Amerika division, which was sold during the fourth
quarter of fiscal 1997 (Note 3).

                                       18
<PAGE>

5.    Income Taxes (continued)

      The components of the provision for income taxes are:

(In thousands)                                                               1999        1998        1997
- --------------------------------------------------------------------- ------------ ----------- -----------

Currently Payable (Prepaid):
 Federal                                                                  $ 2,232      $2,688      $ 1,271
 State                                                                      1,415       1,330        1,122
 Foreign                                                                      (78)       (110)        (234)
                                                                          -------      ------      -------

                                                                            3,569       3,908        2,159
                                                                          -------      ------      -------

Net Deferred (Prepaid):
 Federal                                                                   (1,365)      1,035          389
 State                                                                       (201)        203           88
 Foreign                                                                     (217)          -         (931)
                                                                          -------      ------      -------

                                                                           (1,783)      1,238         (454)
                                                                          -------      ------      -------

                                                                          $ 1,786      $5,146      $ 1,705
                                                                          =======      ======      =======

      The Company and its majority-owned subsidiaries receive a tax deduction
upon exercise of nonqualified stock options by employees for the difference
between the exercise price and the market price of the underlying common stock
on the date of exercise. The provision for income taxes that is currently
payable does not reflect $676,000, $928,000, and $659,000 in fiscal 1999, 1998,
and 1997, respectively, of such benefits of the Company and its majority-owned
subsidiaries that have been allocated to capital in excess of par value,
directly or through the effect of majority-owned subsidiaries' equity
transactions.
      The provision for income taxes in the accompanying statement of operations
differs from the provision calculated by applying the statutory federal income
tax rate of 34% to income (loss) before provision for income taxes and minority
interest due to:

(In thousands)                                                               1999        1998        1997
- --------------------------------------------------------------------- ------------ ----------- -----------

Provision (Benefit) for Income Taxes at Statutory Rate                    $  (275)     $2,895      $   (99)
Differences Resulting From:
 State income taxes, net of federal tax                                       801       1,012          764
 Amortization and write-off of cost in excess of net assets                   898         739        1,344
   of acquired companies
 Gain on issuance of stock by subsidiary                                        -           -         (501)
 Nondeductible expenses                                                        90          64           62
 Dividend from less than 80%-owned subsidiary                                 122         118          115
 Other, net                                                                   150         318           20
                                                                          -------      ------      -------

                                                                          $ 1,786      $5,146      $ 1,705
                                                                          =======      ======      =======


                                       19
<PAGE>

5.    Income Taxes (continued)

      Prepaid income taxes and deferred income taxes in the accompanying balance
sheet consist of:

(In thousands)                                                                           1999        1998
- --------------------------------------------------------------------- ------------ ----------- -----------

Prepaid Income Taxes:
 Accrued compensation                                                                  $2,315      $ 2,220
 Reserves and accruals                                                                  3,519        3,640
 Net operating loss and tax credit carryforward                                         3,111        1,934
 Allowance for doubtful accounts                                                          212         (137)
 Other                                                                                    179            -
                                                                                       ------      -------

                                                                                        9,336        7,657
 Less:  Valuation allowance                                                             1,328          739
                                                                                       ------      -------

                                                                                       $8,008      $ 6,918
                                                                                       ======      =======

Deferred Income Taxes:
 Depreciation                                                                          $3,637      $ 2,785
 Other deferred items                                                                     (99)         116
                                                                                       ------      -------

                                                                                       $3,538      $ 2,901
                                                                                       ======      =======

      The valuation allowance relates to the uncertainty surrounding the
realization of the tax benefits attributable primarily to state operating loss
carryforwards. The valuation allowance increased in fiscal 1999 as a result of
certain losses that arose during the year. Of the total fiscal 1999 valuation
allowance, $168,000 will be used to reduce cost in excess of net assets of
acquired companies when any portion of the related deferred tax asset is
recognized.
      The Company has not recognized a deferred tax liability for the difference
between the book basis and tax basis of its investment in the common stock of
its domestic subsidiaries (such difference relates primarily to unremitted
earnings and gains on issuance of stock by subsidiaries) because the Company
does not expect this basis difference to become subject to tax at the parent
level. The Company believes it can implement certain tax strategies to recover
its investment in its domestic subsidiaries tax-free.
      The net operating loss carryforward primarily consists of $10,600,000 of
foreign carryforwards, which do not expire, and $11,050,000 of state
carryforwards, substantially all of which expire in 2003.

6.    Short- and Long-term Obligations

Short-term Obligations
      Effective in fiscal 1999, Thermo EuroTech has an agreement with a wholly
owned subsidiary of Thermo Electron under which Thermo EuroTech can borrow funds
that bear interest at a rate based on the Netherlands market rates, set at the
beginning of each month. At fiscal year-end 1999, $9,228,000 was outstanding
under this arrangement, bearing interest at 4.00%. Borrowings under this
overdraft facility are guaranteed by Thermo Electron. Available borrowings at
fiscal year-end 1999 were $632,000.
      Prior to fiscal 1999, Thermo EuroTech had a line of credit, denominated in
Dutch guilders, under which approximately $6,700,000 could be borrowed at the
Dutch discount rate plus 125 basis points. At fiscal year-end 1998, $6,346,000
was outstanding under this arrangement, bearing interest at 4.02%.


                                       20
<PAGE>

6.    Short- and Long-term Obligations (continued)

      In addition, in fiscal 1998, Thermo EuroTech entered into a line of
credit, denominated in Irish punts. Borrowings, which are due in February 2000,
were $6,705,000 and $6,052,000 at fiscal year-end 1999 and 1998, respectively,
bearing interest at 3.60% and 5.75%, respectively. There are no additional
amounts available under this line of credit.

Long-term Obligations

(In thousands except per share amounts)                                                   1999       1998
- ----------------------------------------------------------------------------------- ----------- ----------

4 5/8% Subordinated Convertible Debentures, Due 2003, Convertible at                  $111,850   $111,850
 $15.90 per Share (includes $515 held by Thermo Electron in fiscal 1999)
4 7/8% Subordinated Convertible Debentures, Due May 2000, Convertible                   37,950     37,950
 into Shares of ThermoRetec at $17.92 per Share (includes $4,180 and
 $3,000 held by Thermo Electron)
2 1/2% Subordinated Convertible Debentures, Due 2001, Convertible into                   6,999          -
 Shares of Thermo EuroTech (Delaware) Inc. at $5.25 per Share
Zero Coupon Promissory Note (Note 2)                                                         -     13,939
6.25% Mortgage Loan, Payable in Monthly Installments of $9, With                         1,063      1,173
 Balloon Payment in May 1999
Mortgage Loan, Payable in Monthly Installments of $5, With Final                           856        949
 Payment in 2003 (a)
Other                                                                                    1,584      2,050
                                                                                      --------   --------

                                                                                       160,302    167,911
Less:  Current Maturities                                                                1,685     14,767
                                                                                      --------   --------

                                                                                      $158,617   $153,144
                                                                                      ========   ========

(a) Bears interest at Prime Rate, which was 7.75% at April 3, 1999.

      During fiscal 1999, the Company reorganized the capital structure of
Thermo EuroTech by offering shareholders the right to exchange their common
shares in Thermo EuroTech for 2 1/2% subordinated convertible debentures due
2001 (the Debentures) issued by a new wholly owned Delaware subsidiary of the
Company, known as Thermo EuroTech (Delaware) Inc. (TETD). As of October 31,
1998, when the exchange offer expired, 1,646,854 common shares had been
exchanged by Thermo EuroTech's shareholders, subject to certain conditions, for
Debentures having an aggregate principal amount equal to $6,999,000. The
reacquisition of these shares was accounted for using the purchase method of
accounting. The Debentures are not redeemable prior to maturity, and are
convertible into common stock of TETD at an initial conversion price of $5.25
per share. The Debentures are guaranteed on a subordinated basis by Thermo
Electron. Following the transaction, the Company owned 78% of Thermo EuroTech's
outstanding common shares.
      The 4 5/8% and 4 7/8% subordinated convertible debentures are guaranteed
on a subordinated basis by Thermo Electron. The Company has agreed to reimburse
Thermo Electron in the event Thermo Electron is required to make a payment under
the guarantees. During fiscal 1999, none of the 4 5/8% debentures were converted
into shares of the Company's common stock.
      The annual requirements for long-term obligations as of April 3, 1999, are
$1,685,000 in fiscal 2000; $38,490,000 in fiscal 2001; $7,492,000 in fiscal
2002; $652,000 in fiscal 2003; $111,912,000 in fiscal 2004; and $71,000 in
fiscal 2005 and thereafter. Total requirements of long-term obligations are
$160,302,000. See Note 11 for information pertaining to the fair value of the
Company's long-term obligations.

                                       21
<PAGE>

7.    Commitments and Contingencies

Operating Leases
      The Company leases land, office, operating facilities, and equipment under
operating leases expiring at various dates through fiscal 2008. The accompanying
statement of operations includes expenses from operating leases of $6,273,000,
$5,822,000, and $5,424,000 in fiscal 1999, 1998, and 1997, respectively. Future
minimum payments due under noncancelable operating leases at April 3, 1999, are
$5,217,000 in fiscal 2000; $4,228,000 in fiscal 2001; $3,030,000 in fiscal 2002;
$1,625,000 in fiscal 2003; $427,000 in fiscal 2004; and $311,000 in 2005 and
thereafter. Total future minimum lease payments are $14,838,000. See Note 8 for
an office and manufacturing facility leased from Thermo Electron.

Contingencies
      The Company is contingently liable with respect to lawsuits and other
matters that arose in the ordinary course of business. In the opinion of
management, these contingencies will not have a material adverse effect upon the
financial position of the Company or its results of operations.

8.    Related-party Transactions

Corporate Services Agreement
      The Company and Thermo Electron have a corporate 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 certain financial and other services, for which
the Company currently pays Thermo Electron annually an amount equal to 0.8% of
the Company's revenues. In calendar 1997 and 1996, the Company paid an amount
equal to 1.0% of the Company's revenues. For these services, the Company was
charged $2,480,000, $2,845,000, and $2,785,000 in fiscal 1999, 1998, and 1997,
respectively. The fee is reviewed and adjusted annually by mutual agreement of
the parties. The corporate services agreement is renewed annually but can be
terminated upon 30 days' prior notice by the Company or upon the Company's
withdrawal from the Thermo Electron Corporate Charter (the Thermo Electron
Corporate Charter defines the relationship among Thermo Electron and its
majority-owned subsidiaries). Management believes that the service fee charged
by Thermo Electron is reasonable and that such fees are representative of the
expenses the Company would have incurred on a stand-alone basis. For additional
items such as employee benefit plans, insurance coverage, and other identifiable
costs, Thermo Electron charges the Company based upon costs attributable to the
Company. In fiscal 1999, Thermo Electron billed the Company an additional
$157,000 for certain administrative services required by the Company that were
not covered by the corporate services agreement.

Development Agreement
      The Company 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 Company's development of soil-remediation centers. As of October 2,
1993, all such funding under this agreement was completed. In exchange for this
funding, the Company granted Thermo Electron a royalty equal to approximately 3%
of net revenues from soil-remediation services performed at the centers
developed under the agreement. The royalty payments may cease if the amounts
paid by the Company yield a certain internal rate of return to Thermo Electron
on the funds advanced to the Company under the agreement. Two sites were
developed under this agreement. The Company paid royalties of $186,000,
$115,000, and $186,000 in fiscal 1999, 1998, and 1997, respectively, relating to
this agreement, which are included in selling, general, and administrative
expenses in the accompanying statement of operations.

Operating Lease
      In addition to the operating leases discussed in Note 7, the Company
leases an office and operating facility from Thermo Electron. The accompanying
statement of operations includes expenses from this operating lease of $166,000
in fiscal 1999 and 1998 and $106,000 in fiscal 1997. The future minimum payments
due under the lease as of April 3, 1999, are $166,000 in fiscal 2000 through
2005 and thereafter. Total future minimum lease payments are $996,000.

                                       22
<PAGE>

8.    Related-party Transactions (continued)

Other Related-party Transactions
      The Company purchases and sells products and services in the ordinary
course of business with other companies affiliated with Thermo Electron. Sales
of services to such affiliated companies totaled $379,000, $320,000, and $49,000
in fiscal 1999, 1998, and 1997, respectively. Purchases of products and services
from such affiliated companies total $231,000, $938,000, and $455,000 in fiscal
1999, 1998, and 1997, respectively.

Repurchase Agreements
      The Company invests excess cash in repurchase agreements with Thermo
Electron as discussed in Notes 1 and 19.

Short- and Long-term Obligations
      See Note 6 for a description of short- and long-term obligations of the
Company held by Thermo Electron.

9.    Common Stock

      Put rights are attached to certain shares of Company common stock which
were previously issued in connection with an acquisition. The put rights
obligate the Company, at the holders' option, to purchase shares of the
Company's common stock for $8.00 per share at any time through January 2002. At
the time a holder elects to tender shares, the Company has the option to net
cash settle the obligation in lieu of purchasing the shares. At April 3, 1999,
put rights with respect to 423,854 shares were outstanding. During fiscal 1999,
the Company repurchased 423,824 shares of common stock under such arrangements.
      At April 3, 1999, the Company had 700,500 warrants outstanding to purchase
shares of its common stock, which are exercisable at prices ranging from $10.00
to $11.34 per share and expire in fiscal 2001. The warrants were issued in
fiscal 1992 and 1993 in connection with private placements completed by three of
ThermoRetec's soil-remediation subsidiaries.
      At April 3, 1999, the Company had reserved 9,926,347 unissued shares of
its common stock for possible issuance under stock-based compensation plans,
conversion of the 4 5/8% subordinated convertible debentures, and exercise of
warrants.

10.   Transactions in Stock of Subsidiaries

      During fiscal 1997, Thermo EuroTech sold 1,105,000 shares of its common
stock in a private placement at $4.25 per share for net proceeds of $4,314,000,
resulting in a gain of $1,475,000.
      Dividends declared by ThermoRetec were $2,610,000, $2,504,000, and
$2,557,000 in fiscal 1999, 1998, and 1997, respectively. Dividends declared by
ThermoRetec include $1,798,000, $1,736,000, and $1,694,000 in fiscal 1999, 1998,
and 1997, respectively, that were allocated to the Company and reinvested in
611,957 shares, 254,833 shares, and 194,961 shares, respectively, of
ThermoRetec's common stock pursuant to ThermoRetec's Dividend Reinvestment Plan.
      The Company's percentage ownership of its majority-owned subsidiaries at
year end was:

                                                                                1999       1998        1997
- -------------------------------------------------------------------------- ---------  ---------  ----------

ThermoRetec                                                                      70%        69%         69%
Randers Killam (a)                                                               95%        53%        100%
Thermo EuroTech                                                                  78%        56%         53%

(a) Upon issuance of 22,606,210 shares of Randers Killam common stock to the
    Company, as described in Note 3, the Company owned approximately 95% of
    Randers Killam outstanding common stock. Fiscal 1997 represents the
    Company's ownership of The Killam Group prior to its transfer to Randers in
    fiscal 1998.

                                       23
<PAGE>

11.   Fair Value of Financial Instruments

      The Company's financial instruments consist primarily of cash and cash
equivalents, available-for-sale and held-to-maturity investments, accounts
receivable, notes payable and current maturities of long-term obligations,
accounts payable, due to parent company and affiliated companies, and long-term
obligations. The carrying amounts of these financial instruments, with the
exception of available-for-sale and held-to-maturity investments and long-term
obligations, approximate fair value due to their short-term nature.
      Available-for-sale investments are carried at fair value in the
accompanying fiscal 1998 balance sheet. The fair values were determined based on
quoted market prices. See Note 2 for fair value information pertaining to these
financial instruments. Held-to-maturity investments are carried at amortized
cost in the accompanying fiscal 1998 balance sheet. The fair values are
disclosed on the accompanying balance sheet and were determined based on quoted
market prices.
      The fair value of long-term obligations was determined based on quoted
market prices and on borrowing rates available to the Company at the respective
year ends. The carrying amount and fair value of the Company's long-term
obligations are:
</TABLE>
<TABLE>
<CAPTION>
<S>                                                <C>         <C>        <C>        <C>        <C>

                                                                         1999                  1998
                                                                --------------------  --------------------
                                                                 Carrying       Fair   Carrying       Fair
(In thousands)                                                     Amount      Value     Amount      Value
- --------------------------------------------------------------- ---------- ---------- ---------- ----------

Subordinated Convertible Debentures                              $156,799   $139,587   $149,800   $ 143,416
Other                                                               1,818      1,818      3,344       3,344
                                                                 --------   --------   --------   ---------

                                                                 $158,617   $141,405   $153,144   $ 146,760
                                                                 ========   ========   ========   =========

12.   Significant Customers

      During fiscal 1999, 1998, and 1997, revenues derived from U.S. government
agencies accounted for 6%, 4%, and 13%, respectively, of the Company's total
revenues.

13.   Restructuring Costs

      During fiscal 1999, the Company recorded $10,217,000 of restructuring
costs, which were accounted for in accordance with Emerging Issues Task Force
Pronouncement 94-3. Of these restructuring costs, $9,176,000 was recorded by
ThermoRetec in connection with the closure of two soil-recycling facilities. The
costs include a $6,238,000 write-down of fixed assets to their estimated
disposal value of $895,000 and a $1,884,000 write-off of intangible assets,
including $715,000 of cost in excess of net assets of acquired companies, as
well as $1,054,000 for ongoing lease costs and severance for 13 employees, 6 of
whom were terminated in fiscal 1999. ThermoRetec closed one soil-recycling
facility in March 1999 and is actively seeking a buyer for the second
soil-recycling facility. If no buyer is found, ThermoRetec will close the
facility. In addition, the Company recorded $1,041,000 of restructuring costs
for abandoned-facility payments relating to the consolidation of the facilities
of another business.


                                       24
<PAGE>

13.   Restructuring Costs (continued)

      A summary of the changes in accrued restructuring costs, which are
included in other accrued expenses in the accompanying balance sheet, is:

                                                                                       Facility
(In thousands)                                                             Severance      Costs     Total
- ------------------------------------------------------------------------- ----------- ---------- ---------

Balance at April 4, 1998                                                   $      -    $      -   $      -
 Provision charged to expense                                                   213       1,882      2,095
 Usage                                                                         (101)       (275)      (376)
                                                                           --------    --------   --------

Balance at April 3, 1999                                                   $    112    $  1,607   $  1,719
                                                                           ========    ========   ========

      During fiscal 1997, ThermoRetec recorded $7,800,000 of restructuring costs
to write-down certain capital equipment and intangible assets in response to a
severe downturn in its soil-recycling business, which resulted in the closure of
two soil-remediation sites. The charge included a $2,206,000 write-down of cost
in excess of net assets of acquired companies, which was nondeductible for tax
purposes. In addition, the Company's analysis indicated that the future
undiscounted cash flows from certain other soil-remediation sites that remained
open would be insufficient to recover ThermoRetec's investment in these business
units, thus requiring a write-down of certain assets, which is also included in
the $7,800,000 charge.
      In May 1999, the Company announced certain other restructuring actions
(Note 19).

14.   Supplemental Cash Flow Information

(In thousands)                                                                  1999       1998      1997
- ------------------------------------------------------------------------- ----------- ---------- ---------

Cash Paid For:
 Interest                                                                  $   8,244   $ 10,363   $ 10,255
 Income taxes                                                              $   3,025   $  4,041   $  1,958

Noncash Activities:
 Fair value of assets of acquired companies                                $     643   $ 29,477   $ 12,996
 Cash paid for acquired companies                                               (643)   (14,765)    (5,465)
 Issuance of notes payable for acquired company                                    -          -     (1,300)
 Issuance of subsidiary common stock for acquired companies                        -     (3,125)    (2,006)
                                                                           ---------   --------   --------

     Liabilities assumed of acquired companies                             $       -   $ 11,587   $  4,225
                                                                           =========   ========   ========

 Issuance of subsidiary subordinated convertible debentures in             $   6,999   $      -   $      -
   exchange for subsidiary common stock (Note 6)

 Conversions of subordinated convertible debentures                        $       -   $ 13,220   $  4,812

 Company common stock received in settlement of a note                     $     668   $      -   $      -
  receivable

 Notes receivable received upon sale of business (Note 3)                  $       -   $  2,881   $      -


                                       25
<PAGE>

15.   Business Segment Information

      The Company organizes and manages its businesses by individual functional
operating entity. The Company has combined its operating entities into four
segments: Environmental-liability Management, Engineering and Design, Laboratory
Testing, and Metal Treating. In classifying entities into a particular segment,
the Company aggregates businesses with similar economic characteristics,
services, methods of providing services, customers, and regulatory environments.
      The Environmental-liability Management segment is a national provider of
environmental-liability and resource-management services, offering these and
related consulting services in four areas: consulting and engineering, nuclear
remediation, soil remediation, and fluids recycling.
      The Engineering and Design segment provides comprehensive engineering and
outsourcing services such as water and wastewater treatment, process engineering
and construction, highway and bridge engineering, and infrastructure
engineering. In addition, this segment provides consulting services that address
natural resource management issues.
      The Laboratory Testing segment operates analytical laboratories that
provide environmental- and pharmaceutical-testing services.
      The Metal Treating segment performs metallurgical processing services
using thermal-treatment equipment. Until the October 1997 sale of its equipment
division (Note 3), this segment also designed, manufactured, and installed
advanced custom-engineered, thermal-processing systems.

(In thousands)                                                                   1999     1998        1997
- --------------------------------------------------------------------------- ---------- --------- ---------

Revenues:
 Environmental-liability Management (a)                                     $ 159,094 $141,115   $ 126,811
 Engineering and Design (b)                                                    91,839   84,566      74,832
 Laboratory Testing (c)                                                        40,523   37,485      35,431
 Metal Treating                                                                19,274   36,618      44,342
 Intersegment sales elimination (d)                                              (691)    (998)     (2,913)
                                                                            --------- --------   ---------

                                                                            $ 310,039 $298,786   $ 278,503
                                                                            ========= ========   =========

Income (Loss) Before Provision for Income Taxes and Minority Interest:
 Environmental-liability Management (e)                                     $  (3,644) $  (454)  $  (6,254)
 Engineering and Design (f)                                                     4,406    6,303       6,689
 Laboratory Testing                                                             5,206    4,363       1,494
 Metal Treating                                                                 2,493    4,278       4,326
 Corporate (g)                                                                 (2,473)  (2,756)     (3,626)
                                                                            ---------  -------   ---------

 Total operating income                                                         5,988   11,734       2,629
 Interest and other expense, net                                               (6,796)  (3,220)     (2,920)
                                                                            ---------  -------   ---------

                                                                            $    (808) $ 8,514   $    (291)
                                                                            =========  =======   =========

Total Assets:
 Environmental-liability Management                                         $ 169,956 $166,925  $ 150,362
 Engineering and Design                                                       106,301  102,394      85,679
 Laboratory Testing                                                            48,434   43,557      39,795
 Metal Treating                                                                11,509   12,795      34,338
 Corporate (h)                                                                 15,498   34,855      83,610
                                                                            ---------  -------   ---------

                                                                            $ 351,698  $360,526  $ 393,784
                                                                            =========  ========  =========


                                       26
<PAGE>

15.   Business Segment Information (continued)

(In thousands)                                                                 1999      1998        1997
- ------------------------------------------------------------------------- ---------- ---------- ----------

Depreciation and Amortization:
 Environmental-liability Management                                         $ 9,245    $7,672     $ 7,049
 Engineering and Design                                                       3,117     3,003       2,245
 Laboratory Testing                                                           3,527     2,865       2,484
 Metal Treating                                                                 834     1,007       1,089
 Corporate                                                                      100       237          33
                                                                            -------    ------     -------

                                                                            $16,823    $14,784    $12,900
                                                                            =======    =======    =======

Capital Expenditures:
 Environmental-liability Management                                         $ 8,385    $8,916     $ 9,008
 Engineering and Design                                                       1,632     1,759       1,157
 Laboratory Testing                                                           6,463     7,018       3,321
 Metal Treating                                                               1,053       764       1,839
 Corporate                                                                     (118)        3         101
                                                                            -------    ------     -------

                                                                            $17,415    $18,460    $15,426
                                                                            =======    =======    =======

(a) Includes intersegment sales of $7,000, $82,000, and $1,799,000 in fiscal
    1999, 1998, and 1997, respectively.
(b) Includes intersegment sales of $60,000, $73,000, and $4,000 in fiscal 1999,
    1998, and 1997, respectively.
(c) Includes intersegment sales of $624,000, $843,000, and $1,110,000 in fiscal
    1999, 1998, and 1997, respectively.
(d) Intersegment sales are accounted for at prices that are representative of
    transactions with unaffiliated parties.
(e) Includes restructuring costs of $9,176,000 and $7,800,000 in fiscal 1999 and
    1997, respectively (Note 13). In addition, fiscal 1997 includes loss on sale
    of business of $1,482,000 (Note 3).
(f) Includes restructuring costs of $1,023,000 in fiscal 1999 (Note 13).
(g)  Primarily general and administrative expenses.
(h) Primarily cash, cash equivalents, and available-for-sale investments.

16.   Earnings (Loss) per Share

      Basic and diluted earnings (loss) per share were calculated as follows:

(In thousands except per share amounts)                                        1999       1998       1997
- ------------------------------------------------------------------------- ---------- ---------- ----------

Basic
Net Income (Loss)                                                           $(1,421)   $ 3,273    $  (162)
                                                                            -------    -------    -------

Weighted Average Shares                                                      19,402     18,700     18,090
                                                                            -------    -------    -------

Basic Earnings (Loss) per Share                                             $  (.07)   $   .18    $  (.01)
                                                                            =======    =======    =======


                                       27
<PAGE>

16.   Earnings (Loss) per Share (continued)

(In thousands except per share amounts)                                         1999       1998      1997
- ------------------------------------------------------------------------- ----------- ---------- ---------

Diluted
Net Income (Loss)                                                           $(1,421)    $ 3,273    $  (162)
Effect of Majority-owned Subsidiaries' Dilutive Securities                       (2)        (13)         -
                                                                            -------     -------    -------

Income (Loss) Available to Common Shareholders, as Adjusted                 $(1,423)    $ 3,260    $  (162)
                                                                            -------     -------    -------

Weighted Average Shares                                                      19,402      18,700     18,090
Effect of Stock Options                                                           -         278          -
                                                                            -------     -------    -------

Weighted Average Shares, as Adjusted                                         19,402      18,978     18,090
                                                                            -------     -------    -------

Diluted Earnings (Loss) per Share                                           $  (.07)    $   .17    $  (.01)
                                                                            =======     =======    =======

      The computation of diluted earnings (loss) per share for each period
excludes the effect of assuming the exercise of certain outstanding stock
options, warrants, and put rights because the effect would be antidilutive. As
of April 3, 1999, there were 2,464,925 of such options and warrants outstanding,
with exercise prices ranging from $4.16 to $11.34 per share. As of April 3,
1999, put rights with respect to an aggregate 423,854 shares were outstanding.
The put rights obligate the Company, at the holder's option, to purchase shares
of the Company's common stock for $8.00 per share.
      In addition, the computation of diluted earnings (loss) per share for each
period excludes the effect of assuming the conversion of convertible obligations
because the effect would be antidilutive. As of April 3, 1999, the calculation
excluded $111,850,000 principal amount of 4 5/8% subordinated convertible
debentures, convertible at $15.90 per share.

17.   Proposed Reorganization

      Thermo Electron has announced a proposed reorganization involving certain
of Thermo Electron's subsidiaries, including the Company. Under this plan, the
Company, ThermoRetec, and Randers Killam would be merged into Thermo Electron.
As a result, all three companies would become wholly owned subsidiaries of
Thermo Electron. The public shareholders of all three companies would receive
common stock in Thermo Electron in exchange for their shares. The completion of
these transactions is subject to numerous conditions, including the
establishment of prices and exchange ratios; confirmation of anticipated tax
consequences; the approval of the Board of Directors of ThermoRetec and Randers
Killam; the negotiation and execution of definitive merger agreements; the
receipt of fairness opinions from investment banking firms that the transactions
are fair to the Company's and subsidiaries' shareholders (other than the Company
and Thermo Electron) from a financial point of view; the approval of the
Company's Board of Directors, including its independent directors; and
completion of review by the Securities and Exchange Commission of any necessary
documents regarding the proposed transactions.

                                       28
<PAGE>

18.   Unaudited Quarterly Information

(In thousands except per share amounts)

1999                                                                First   Second (a)    Third     Fourth

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

Revenues                                                           $76,693    $77,177    $80,400    $75,769
Gross Profit                                                        15,648     15,143     15,851     15,787
Net Income (Loss)                                                    1,001     (3,696)       771        503
Basic and Diluted Earnings (Loss) per Share                            .05      (.19)        .04        .03

1998                                                                First    Second    Third (b)    Fourth
- ---------------------------------------------------------------- ---------- ---------- ---------- ---------

Revenues                                                           $72,519    $81,161    $73,875    $71,231
Gross Profit                                                        14,568     15,485     14,001      9,621
Net Income (Loss)                                                    1,332      1,567      1,656     (1,282)
Earnings (Loss) per Share:
 Basic                                                                 .08        .09        .09       (.07)
 Diluted                                                               .07        .08        .09       (.07)

(a) Reflects a pretax charge of $10,217,000 for restructuring costs.
(b) Reflects a pretax gain of $3,012,000 from ThermoRetec's sale of its
investment in a joint venture.

19.   Subsequent Events

Restructuring Actions
      In May 1999, the Company announced the planned sale of several businesses
by its majority-owned subsidiaries. These include the following:

      -- The used-oil processing business by Thermo EuroTech.

      -- Three soil-recycling facilities by ThermoRetec.

      -- The businesses of BAC Killam Inc., the Randers division, and E3-Killam
         Inc. by Randers Killam.

      In connection with these actions, the Company expects to incur
approximately $65 million in pretax charges, primarily during the first quarter
of fiscal 2000. These charges primarily represent the excess of book value of
the businesses to be sold over the estimated proceeds from the sale. As a result
of the sale of the businesses, the Company also expects to incur costs for
ongoing lease obligations, severance, and other exit costs, which have been
provided for in the estimate of $65 million. Revenues and operating loss from
these businesses aggregated $49,627,000 and $112,000, respectively, in fiscal
1999.

Cash Management Arrangement
      Effective June 1, 1999, the Company and Thermo Electron commenced use of a
new domestic cash management arrangement (Note 1). Under the new arrangement,
amounts advanced to Thermo Electron by the Company for domestic cash management
purposes bear interest at the 30-day Dealer Commercial Paper Rate plus 50 basis
points, set at the beginning of each month. Thermo Electron is contractually
required to maintain cash, cash equivalents, and/or immediately available bank
lines of credit equal to at least 50% of all funds invested under this cash
management arrangement by all Thermo Electron subsidiaries other than wholly
owned subsidiaries. The Company has the contractual right to withdraw its funds
invested in the cash management arrangement upon 30 days' prior notice. The
Company will report amounts invested in this arrangement as "advance to
affiliate" in its balance sheet, beginning in the first quarter of fiscal 2000.

                                       29
<PAGE>

                    Report of Independent Public Accountants
To the Shareholders and Board of Directors of Thermo TerraTech Inc.:

      We have audited the accompanying consolidated balance sheet of Thermo
TerraTech Inc. (a Delaware corporation and an 87%-owned subsidiary of Thermo
Electron Corporation) and subsidiaries as of April 3, 1999, and April 4, 1998,
and the related consolidated statements of operations, cash flows, and
comprehensive income and shareholders' investment for each of the three years in
the period ended April 3, 1999. These consolidated financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.
      We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the consolidated financial statements are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
      In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Thermo
TerraTech Inc. and subsidiaries as of April 3, 1999, and April 4, 1998, and the
results of their operations and their cash flows for each of the three years in
the period ended April 3, 1999, in conformity with generally accepted accounting
principles.



                                                            Arthur Andersen LLP



Boston, Massachusetts
May 11, 1999 (except with respect
to the matters discussed
in Note 19,
as to which the date is June 1, 1999)


                                       30
<PAGE>

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

      Forward-looking statements, within the meaning of Section 21E of the
Securities Exchange Act of 1934, are made throughout this Management's
Discussion and Analysis of Financial Condition and Results of Operations. For
this purpose, any statements contained herein that are not statements of
historical fact may be deemed to be forward-looking statements. Without limiting
the foregoing, the words "believes," "anticipates," "plans," "expects," "seeks,"
"estimates," and similar expressions are intended to identify forward-looking
statements. There are a number of important factors that could cause the results
of the Company to differ materially from those indicated by such forward-looking
statements, including those detailed immediately after this Management's
Discussion and Analysis of Financial Condition and Results of Operations under
the heading "Forward-looking Statements."

Overview

      The Company provides industrial outsourcing services and manufacturing
support encompassing a broad range of specializations. The Company operates in
four segments: environmental-liability management, engineering and design,
laboratory testing, and metal treating.

Environmental-liability Management
       The Company's majority-owned ThermoRetec Corporation subsidiary is a
national provider of environmental-liability and resource-management services.
ThermoRetec offers these and related consulting services in four areas:
consulting and engineering, nuclear remediation, soil remediation, and fluids
recycling. The Company's majority-owned Thermo EuroTech N.V. subsidiary, located
in the Netherlands, specializes in converting "off-spec" and contaminated
petroleum fluids into useable oil products. Thermo EuroTech also provides
in-plant waste management and recycling services through its Ireland-based Green
Sunrise Holdings Ltd. subsidiary, acquired in February 1998. Through December
1996, this segment also included the results of the Company's J. Amerika
division, an underground tank and groundwater treatment services company.

Engineering and Design
     The  Company's  majority-owned  The Randers  Killam  Group Inc.  subsidiary
provides comprehensive engineering and outsourcing services such as water and
wastewater treatment, process engineering and construction, highway and bridge
engineering, and infrastructure engineering. The Company's wholly owned
Normandeau Associates Inc. subsidiary provides consulting services that address
natural resource management issues.

Laboratory Testing
      The Company's wholly owned Thermo Analytical Inc. subsidiary operates
analytical laboratories that provide environmental- and pharmaceutical-testing
services, primarily to commercial clients throughout the U.S.

Metal Treating
      The Company performs metallurgical processing services using
thermal-treatment equipment at locations in California, Minnesota, and
Wisconsin. Until the October 1997 sale of its equipment division located in
Michigan (Note 3), the Company also designed, manufactured, and installed
advanced custom-engineered, thermal-processing systems.

      In May 1999, the Company announced the planned sale of several businesses
by its majority-owned subsidiaries. These include the used-oil processing
business by Thermo EuroTech; three soil-recycling facilities by ThermoRetec; and
the businesses of BAC Killam Inc., the Randers division, and E3-Killam Inc. by
Randers Killam. In connection with these actions, the Company expects to incur
approximately $65 million in pretax charges, primarily during the first quarter
of fiscal 2000. These charges primarily represent the excess of book value of
the businesses to be sold over the estimated proceeds from the sale. As a result
of the sale of the businesses, the Company also expects to incur costs for
ongoing lease obligations, severance, and other exit costs, which have been
provided for in the estimate of $65 million. Revenues and operating loss from
these businesses aggregated $49.6 million and $0.1 million, respectively, in
fiscal 1999.


                                       31
<PAGE>

Results of Operations

Fiscal 1999 Compared With Fiscal 1998
      Total revenues were $310.0 million in fiscal 1999, compared with $298.8
million in fiscal 1998. Metal Treating segment revenues decreased to $19.3
million in fiscal 1999 from $36.6 million in fiscal 1998, due to the sale of the
Company's thermal-processing equipment business in October 1997, which
contributed revenues of $17.3 million in fiscal 1998 (Note 3). Revenues from the
Environmental-liability Management segment increased 13% to $159.1 million in
fiscal 1999 from $141.1 million in fiscal 1998. Excluding intrasegment sales,
revenues at ThermoRetec increased to $141.6 million in fiscal 1999 from $127.1
million in fiscal 1998, primarily due to $8.6 million of higher revenues from
consulting and engineering services at RETEC and, to a lesser extent, the
inclusion of $6.2 million of revenues from businesses acquired in fiscal 1998.
Revenues from ThermoRetec's soil-remediation services increased $6.4 million in
fiscal 1999, resulting from higher volumes of soil processed. These increases
were offset in part by a decrease in revenues resulting from a decline in the
number of contracts in process at ThermoRetec's eastern construction operations.
Revenues from Thermo EuroTech increased $3.5 million to $17.5 million due to the
inclusion for the full fiscal 1999 period of revenues from Green Sunrise, which
was acquired in February 1998 and added incremental revenues of $6.4 million,
offset in part by a decrease in sales of useable oil products. Revenues from the
Engineering and Design segment increased to $91.8 million in fiscal 1999 from
$84.6 million in fiscal 1998, primarily due to increased revenues from two
construction and labor management contracts, which are expected to be completed
by the end of the first quarter of fiscal 2000. Engineering and Design segment
revenues also increased $3.5 million due to the inclusion for the full fiscal
1999 period of revenues from Randers, acquired May 1997. Revenues from the
Laboratory Testing segment increased to $40.5 million in fiscal 1999 from $37.5
million in fiscal 1998 due to higher demand.
      The gross profit margin increased to 20% in fiscal 1999 from 18% in fiscal
1998. The gross profit margin from the Environmental-liability Management
segment increased in fiscal 1999 primarily due to a reduction of losses on
certain remedial-construction contracts, higher utilization of billable
personnel, and higher volumes of soil processed at RETEC and, to a lesser
extent, higher gross profit margin at Thermo EuroTech due to the inclusion of
higher-margin revenue at Green Sunrise. The gross profit margin from the
Engineering and Design segment decreased in fiscal 1999, primarily due to a
change in the mix of contracts.
      Selling, general, and administrative expenses as a percentage of revenues
increased slightly to 15% in fiscal 1999 from 14% in fiscal 1998, primarily due
to the absence in fiscal 1999 of lower relative expenses at the Company's Metal
Treating segment due to the fiscal 1998 sale of the thermal-processing equipment
business and higher relative expenses at Green Sunrise, which was acquired in
February 1998. In addition, selling, general, and administrative expenses at the
Environmental-liability Management segment increased due to higher provisions
for uncollectible accounts, increased administrative costs associated with
ThermoRetec's name change, higher insurance costs, and inclusion for the full
period of expenses from acquired businesses.
      During fiscal 1999, the Company recorded $10.2 million of restructuring
costs. Of these restructuring costs, $9.2 million was recorded by ThermoRetec in
connection with the closure of two soil-recycling facilities. The costs include
a write-down of fixed assets to their estimated disposal value and a write-off
of intangible assets, including cost in excess of net assets of acquired
companies, as well as other closure costs. The closure was in response to
changes in market conditions, which resulted in lower-priced disposal
alternatives. These facilities reported aggregated revenues and operating losses
of $2.2 million and $0.8 million, respectively, in fiscal 1998, and aggregated
revenues and operating losses prior to the decision to close the facilities of
$1.8 million and $0.1 million, respectively, in fiscal 1999. In addition, the
Company recorded $1.0 million of restructuring costs for abandoned-facility
payments relating to the consolidation of the facilities of another business
(Note 13).
      Interest income decreased to $2.2 million in fiscal 1999 from $4.2 million
in fiscal 1998, primarily as a result of lower average invested cash balances.
Interest expense decreased to $9.0 million in fiscal 1999 from $10.8 million in
fiscal 1998, primarily due to the repayment of a note payable in February and
May 1998, the repayment of a

                                       32
<PAGE>

Fiscal 1999 Compared With Fiscal 1998 (continued)
promissory note to Thermo Electron Corporation, and the conversion of the
Company's 6 1/2% subordinated convertible debentures during fiscal 1998, offset
in part by increased borrowings at Thermo EuroTech during fiscal 1999 and the
issuance of $7.0 million principal amount of 2 1/2% convertible subordinated
debentures due 2001 (Note 6).
      Equity in earnings of unconsolidated subsidiary in fiscal 1998 represented
ThermoRetec's proportionate share of income from a joint venture. Gain on sale
of unconsolidated subsidiary in fiscal 1998 resulted from ThermoRetec's sale of
its interest in this joint venture (Note 3).
      The Company recorded income tax expense of $1.8 million in fiscal 1999 on
a pretax loss primarily due to the effect of nondeductible amortization and
write off of cost in excess of net assets of acquired companies. The effective
tax rate in fiscal 1998 was 60%. This rate exceeded the statutory federal income
tax rate primarily due to the impact of state income taxes and the nondeductible
amortization of cost in excess of net assets of acquired companies.
      The Company recorded minority interest income of $1.2 million in fiscal
1999, compared with minority interest expense of $0.1 million in fiscal 1998,
primarily due to the effect of a net loss at ThermoRetec in fiscal 1999.

Fiscal 1998 Compared With Fiscal 1997
      Total revenues increased 7% to $298.8 million in fiscal 1998 from $278.5
million in fiscal 1997. Revenues from the Environmental-liability Management
segment increased 11% to $141.1 million in fiscal 1998 from $126.8 million in
fiscal 1997. Excluding intrasegment sales, revenues at ThermoRetec increased to
$127.1 million in fiscal 1998 from $114.8 million in fiscal 1997, primarily due
to the inclusion of $20.1 million of revenues from acquired businesses and, to a
lesser extent, increased revenues from construction, consulting, and engineering
services at RETEC. These increases were offset in part by an $11.1 million
decrease in revenues resulting from a decline in the number of contracts in
process at ThermoRetec's eastern construction operations. Revenues from
soil-remediation services decreased $3.5 million, resulting from the closure of
two sites, as well as heavy rains, which unfavorably affected operations at
certain west coast sites, and, to a lesser extent, competitive pricing
pressures. Revenues from Thermo EuroTech increased 17% to $14.0 million,
primarily due to increased revenues relating to contracts to process oil-based
muds and perform soil-remediation services overseas and the inclusion of $1.2
million of revenues from Green Sunrise, acquired in February 1998, offset in
part by a decrease in revenues as a result of the sale of the Company's J.
Amerika division in the fourth quarter of fiscal 1997 (Note 3). Revenues from
the Engineering and Design segment increased to $84.6 million in fiscal 1998
from $74.8 million in fiscal 1997. The inclusion of an aggregate of $15.0
million of revenues from CarlanKillam Consulting Group, Inc. and Randers,
acquired in November 1996 and May 1997, respectively, was offset in part by a
decrease in revenues due to the completion of two major contracts in fiscal
1997. Revenues from the Laboratory Testing segment increased to $37.5 million in
fiscal 1998 from $35.4 million in fiscal 1997 due to higher demand. Metal
Treating segment revenues decreased to $36.6 million in fiscal 1998 from $44.3
million in fiscal 1997, primarily due to the sale of the Company's
thermal-processing equipment business in October 1997 (Note 3), offset in part
by an increase in demand for the Company's metallurgical-processing services in
fiscal 1998.
      The gross profit margin remained constant at 18% in fiscal 1998 and 1997.
The gross profit margin for the Laboratory Testing segment increased in fiscal
1998 due to lower margins in fiscal 1997 as a result of costs incurred related
to efforts to eliminate redundant capabilities at regional laboratories. The
gross profit margin from the Environmental-liability Management segment
decreased in fiscal 1998 primarily due to losses on certain
remedial-construction contracts at ThermoRetec's eastern construction operations
as a result of poorly bid and executed contracts, and an increase in
lower-margin revenues at RETEC, offset in part by increased margins at Thermo
EuroTech due to a shift to higher-margin contracts in fiscal 1998.
      Selling, general, and administrative expenses as a percentage of revenues
remained constant at 14% in fiscal 1998 and 1997. Selling, general, and
administrative expenses increased primarily due to the inclusion of costs from
acquired companies.

                                       33
<PAGE>


Fiscal 1998 Compared With Fiscal 1997 (continued)
      Restructuring and nonrecurring items of $9.3 million in fiscal 1997
includes a charge at ThermoRetec of $7.8 million to write down certain capital
equipment and intangible assets in response to a severe downturn in its
soil-recycling business, which resulted in the closure of two soil-remediation
sites. The charge included a $2.2 million write-down of cost in excess of net
assets of acquired companies, which was nondeductible for tax purposes. In
addition, the Company's analysis indicated that the future undiscounted cash
flows from certain other soil-remediation sites that remained open would be
insufficient to recover ThermoRetec's investment in these business units, thus
requiring a write-down of certain assets, which is included in the $7.8 million
charge. In addition, restructuring and nonrecurring items in fiscal 1997
includes a $1.5 million loss on the sale of the Company's J. Amerika division
(Note 3).
      Interest income decreased to $4.2 million in fiscal 1998 from $7.3 million
in fiscal 1997 as a result of lower average investment balances following the
repayment of a $38.0 million promissory note to Thermo Electron, the repurchase
of Company and subsidiary common stock, as well as cash expended for
acquisitions. These decreases were offset in part by cash received from the sale
of the Company's thermal-processing equipment business and ThermoRetec's
interest in a joint venture (Note 3). Interest expense decreased to $10.8
million in fiscal 1998 from $12.9 million in fiscal 1997, primarily due to the
repayment of a promissory note to Thermo Electron and the conversion of the
Company's 6 1/2% subordinated convertible debentures during fiscal 1998.
      The Company adopted a strategy of spinning out certain of its businesses
into separate subsidiaries and having these subsidiaries sell a minority
interest to outside investors. The Company believes that this strategy provides
additional motivation and incentives for the management of the subsidiaries
through the establishment of subsidiary-level stock option incentive programs,
as well as capital to support the subsidiaries' growth. As a result of the
issuance of common stock by Thermo EuroTech in fiscal 1997, the Company recorded
a gain of $1.5 million. This gain represents an increase in the Company's net
investment in the subsidiary and is classified as gain on issuance of stock by
subsidiary in the accompanying statement of operations. The Company does not
expect to have transactions that will result in such gains in the future.
      Equity in earnings of unconsolidated subsidiary represents ThermoRetec's
proportionate share of income from a joint venture. Gain on sale of
unconsolidated subsidiary in fiscal 1998 resulted from ThermoRetec's sale of its
interest in this joint venture (Note 3).
      The effective tax rates in fiscal 1998 and 1997 exceeded the statutory
federal income tax rate primarily due to the nondeductible amortization of cost
in excess of net assets of acquired companies and the impact of state income
taxes. The effective tax rate in fiscal 1997 was reduced by the effect of a
nontaxable gain on issuance of stock by subsidiary.
      The Company recorded minority interest expense of $0.1 million in fiscal
1998, compared with minority interest income of $1.8 million in fiscal 1997,
primarily due to higher earnings from the Company's majority-owned subsidiaries
and the inclusion of minority interest expense associated with Randers (Note 3).

Liquidity and Capital Resources

      Consolidated working capital was $67.0 million at April 3, 1999, compared
with $69.3 million at April 4, 1998. Cash, cash equivalents, and
available-for-sale investments were $43.0 million at April 3, 1999, compared
with $36.7 million at April 4, 1998. Of the $43.0 million balance at April 3,
1999, $37.6 million was held by the Company's majority-owned subsidiaries and
the remainder was held by the Company and its wholly owned subsidiaries. During
fiscal 1999, $29.9 million of cash was provided by operating activities. During
this period, $7.7 million of cash was provided by an increase in other current
liabilities due to increased subcontract work at Randers Killam, as well as the
timing of payments, including restructuring costs (Note 13). This effect was
offset in part by an increase in unbilled contract costs and fees of $1.5
million, primarily due to the timing of billings on certain contracts.
      Excluding available-for-sale and held-to-maturity investment activity, the
Company's investing activities in fiscal 1999 primarily consisted of capital
additions. The Company expended $17.4 million for purchases of property, plant,
and equipment in fiscal 1999 and expects to spend approximately $13.0 million
for capital additions during fiscal 2000.

                                       34
<PAGE>


Liquidity and Capital Resources (continued)

      The Company's financing activities used cash of $18.5 million in fiscal
1999. During fiscal 1999, the Company repaid notes payable totaling $14.7
million. In October 1998, the Company, through Thermo EuroTech (Delaware) Inc.,
issued $7.0 million principal amount of 2 1/2% subordinated convertible
debentures due 2001 in exchange for 1,646,854 common shares of the Company's
Thermo EuroTech N.V. subsidiary (Note 6). During fiscal 1999, the Company used
cash of $3.4 million to repurchase Company common stock pursuant to certain put
rights on shares issued in connection with an acquisition. The Company has cash
obligations to purchase additional shares under such arrangement aggregating
$3.4 million through fiscal 2002 (Note 9).
      The Company generally expects to have positive cash flow from its existing
operations. Although the Company does not presently intend to actively seek to
acquire additional businesses in the near future, it may acquire one or more
complimentary businesses if they are presented to the Company on terms the
Company believes to be attractive. Such acquisitions may require significant
amounts of cash. In addition, ThermoRetec's $38.0 million principal amount 4
7/8% subordinated convertible debentures mature on May 1, 2000. The maturity of
ThermoRetec's debentures could adversely affect the Company's liquidity in the
first quarter of fiscal 2001. The Company expects that it will finance any such
acquisitions and the redemption of such debentures through a combination of
internal funds and/or short-term borrowings from Thermo Electron, although it
has no agreement with Thermo Electron to ensure that funds will be available on
acceptable terms or at all. Except as described in this paragraph with respect
to ThermoRetec's debentures, the Company believes that its existing resources
are sufficient to meet the capital requirements of its existing businesses for
the foreseeable future.

Market Risk

      The Company is exposed to market risk from changes in interest rates,
foreign currency exchange rates, and equity prices, which could affect its
future results of operations and financial condition. The Company manages its
exposure to these risks through its regular operating and financing activities.

Foreign Currency Exchange Rates
      The Company generally views its investment in foreign subsidiaries with a
functional currency other than the Company's reporting currency as long-term.
The Company's investment in foreign subsidiaries is sensitive to fluctuations in
foreign currency exchange rates. The functional currencies of the Company's
foreign subsidiaries are principally denominated in Dutch guilders. The effect
of a change in foreign exchange rates on the Company's net investment in foreign
subsidiaries is reflected in the "Accumulated other comprehensive items"
component of shareholders' investment. A 10% depreciation in fiscal year-end
1999 functional currencies, relative to the U.S. dollar, would result in a $1.1
million reduction of shareholders' investment.

Equity Prices
      The Company's and its subsidiaries' subordinated convertible debentures
are sensitive to fluctuations in the price of Company or subsidiary common stock
into which the debentures are convertible. Changes in equity prices would result
in changes in the fair value of the Company's and its subsidiaries' subordinated
convertible debentures due to the difference between the current market price
and the market price at the date of issuance of the debentures. A 10% increase
in fiscal year-end 1999 market equity prices would result in a negative impact
to the Company of $1.0 million on the fair value of its subordinated convertible
debentures.

Interest Rates
      The Company's subordinated convertible debentures are sensitive to changes
in interest rates. Interest rate changes would result in a change in the fair
value of the Company's and its subsidiaries' subordinated convertible debentures
due to the difference between the market interest rate and the rate at the date
of issuance of the debentures. A 10% decrease in fiscal year-end 1999 market
interest rates would result in a negative impact to the Company of $0.2 million
on the fair value of its subordinated convertible debentures.

                                       35
<PAGE>


Market Risk (continued)

      The Company's cash, cash equivalents, and variable-rate short- and
long-term obligations are sensitive to changes in interest rates. Interest rate
changes would result in a change in interest income and expense due to the
difference between the current interest rates on cash, cash equivalents, and the
variable-rate short- and long-term obligations and the rate that these financial
instruments may adjust to in the future. A 10% decrease in fiscal year-end 1999
interest rates would result in a negative impact of $0.1 million on the
Company's net income.

Year 2000

      The following constitutes a "Year 2000 Readiness Disclosure" under the
Year 2000 Information and Readiness Disclosure Act. The Company continues to
assess the potential impact of the year 2000 date recognition issue on the
Company's internal business systems, services, and operations. The Company's
year 2000 initiatives include (i) testing and upgrading significant information
technology systems and facilities; (ii) assessing the year 2000 readiness of its
key suppliers and vendors; and (iii) developing a contingency plan.

The Company's State of Readiness
      The Company has implemented a compliance program to ensure that its
critical information technology systems and facilities will be ready for the
year 2000. The first phase of the program, testing and evaluating the Company's
critical information technology systems and facilities for year 2000 compliance,
has largely been completed. During phase one, the Company tested and evaluated
its significant computer systems, software applications, and related equipment
for year 2000 compliance. The Company also evaluated the potential year 2000
impact on its critical facilities. The Company's efforts included testing the
year 2000 readiness of the utility and telecommunications systems at its
critical facilities. The Company is currently in phase two of its program,
during which any noncompliant systems or facilities that were identified during
phase one are prioritized and remediated. Based on its evaluations of its
critical facilities, the Company does not believe that any material upgrades or
modifications are required. The Company is currently upgrading or replacing its
material noncompliant information technology systems, and this process was
approximately 80% complete as of April 3, 1999. In many cases, such upgrades or
replacements are being made in the ordinary course of business, without
accelerating previously scheduled upgrades or replacements. The Company expects
that all of its material information technology systems and critical facilities
will be year 2000 compliant by October 1999.
      The Company is in the process of identifying and assessing the year 2000
readiness of key suppliers and vendors that are believed to be significant to
the Company's business operations. As part of this effort, the Company has
developed and is distributing questionnaires relating to year 2000 compliance to
its significant suppliers and vendors. To date, no significant supplier or
vendor has indicated that its business operations will be materially disrupted
by the year 2000 issue. The Company has started to follow up with significant
suppliers and vendors that have not responded to the Company's questionnaires.
The Company has not completed the majority of its assessment of third-party
risk, but expects to be substantially completed by October 1999.

Contingency Plan
      The Company is developing a contingency plan that will allow its primary
business operations to continue despite disruptions due to year 2000 problems.
This plan may include identifying manual or backup systems in the event of a
failure of the Company's material information technology systems. As the Company
continues to evaluate the year 2000 readiness of its business systems and
facilities and significant suppliers and vendors, it will modify and adjust its
contingency plan as may be required.

                                       36
<PAGE>

Year 2000 (continued)

Estimated Costs to Address the Company's Year 2000 Issues
      The Company had incurred third-party expenses (external costs) related to
year 2000 issues of approximately $325,000 as of April 3, 1999, and the total
external costs of year 2000 remediation are expected to be approximately
$620,000. All of the external costs incurred as of April 3, 1999, were spent on
testing and upgrading information technology systems. In fiscal year 1999, an
immaterial amount of the Company's total information technology budget was spent
on year 2000 issues. All internal costs and related external costs, other than
capital additions, related to year 2000 remediation have been and will continue
to be expensed as incurred.
      The Company does not track the internal costs incurred for its year 2000
compliance project. Such costs are principally the related payroll costs for its
information systems group.

Reasonably Likely Worst Case Scenario
      At this point in time, the Company is not able to determine the most
reasonably likely worst case scenario to result from the year 2000 issue. One
possible worst case scenario would be that the Company experiences year 2000
problems in its material information technology systems that cause the Company
to be unable to access data, to process transactions, and to maintain accurate
books and records. In such an event, the Company's operations could be delayed
or temporarily shut down, and it could be unable to meet its obligations to
customers in a timely fashion. The Company's business, operations, and financial
condition could be adversely affected in amounts that cannot be reasonably
estimated at this time.

Risks of the Company's Year 2000 Issues
      While the Company is attempting to minimize any negative consequences
arising from the year 2000 issue, there can be no assurance that year 2000
problems will not have a material adverse impact on the Company's business,
operations, or financial condition. While the Company expects that upgrades to
its internal business systems will be completed in a timely fashion, there can
be no assurance that the Company will not encounter unexpected costs or delays.
Some services provided by the Company involve the delivery to clients of
third-party software and hardware. In addition, certain older third-party
products, which the Company no longer uses in providing its services to clients,
may not be year 2000 compliant, which may expose the Company to claims. As
discussed above, if any of the Company's key suppliers or vendors experience
business disruptions due to year 2000 issues, the Company might also be
materially adversely affected. There is expected to be a significant amount of
litigation relating to the year 2000 issue and there can be no assurance that
the Company will not incur material costs in defending or bringing lawsuits. In
addition, if any year 2000 issues are identified, there can be no assurance that
the Company will be able to retain qualified personnel to remedy such issues.
Any unexpected costs or delays arising from the year 2000 issue could have a
material adverse impact on the Company's business, operations, and financial
condition in amounts that cannot be reasonably estimated at this time.


                                       37
<PAGE>

                           Forward-looking Statements
      In connection with the "safe harbor" provisions of the Private Securities
Litigation Reform Act of 1995, the Company wishes to caution readers that the
following important factors, among others, in some cases have affected, and in
the future could affect, the Company's actual results and could cause its actual
results in fiscal 2000 and beyond to differ materially from those expressed in
any forward-looking statements made by, or on behalf of, the Company.

      Dependence on Environmental Regulation. Federal, state, and local
environmental laws govern each of the markets in which the Company conducts
business, as well as many of the Company's operations. The markets for many of
the Company's services, including industrial-remediation services,
nuclear-remediation services, hazardous waste-remedial construction services,
soil-remediation services, waste-fluids recycling services, engineering and
design services, and laboratory services, and the standards governing most
aspects of the construction and operation of the Company's facilities, were
directly or indirectly created by, and are dependent on, the existence and
enforcement of those laws. There can be no assurance that these laws and
regulations will not change in the future, requiring new technologies or
stricter standards with which the Company must comply. In addition, there can be
no assurance that these laws and regulations will not be made more lenient in
the future, thereby reducing the size of the markets addressed by the Company.
Any such change in such federal, state, and local environmental laws and
regulations may have a material adverse effect on the Company's business.
      Responsibility for establishing and enforcing certain federal policies,
such as the federal underground storage tank policy, has been delegated to the
states, which are not only required to establish regulatory programs, but are
also permitted to mandate more stringent requirements than are otherwise
required by federal law. Recently, certain states have adopted a "risk-based"
approach to prioritizing site cleanups and setting cleanup standards, which
attempts to balance the costs of remediation against the potential harm to human
health and the environment from leaving sites unremediated. There can be no
assurance that additional states will not adopt these policies or that these
policies will not reduce the size of the potential market addressed by the
Company.

      Potential Environmental and Regulatory Liability. The Company's operations
are subject to comprehensive laws and regulations related to the protection of
the environment. Among other things, these laws and regulations impose
requirements to control air, soil, and water pollution, and regulate health,
safety, zoning, land use, and the handling and transportation of hazardous and
nonhazardous materials. Such laws and regulations also impose liability for
remediation and cleanup of environmental contamination, both on-site and
off-site, resulting from past and present operations. These requirements may
also be imposed as conditions to operating permits or licenses that are subject
to renewal, modification, or revocation. Existing laws and regulations, and new
laws and regulations, may require the Company to modify, supplement, replace, or
curtail its operating methods, facilities, or equipment at costs which may be
substantial without any corresponding increase in revenue. The Company is also
potentially subject to monetary fines, penalties, remediation, cleanup or stop
orders, injunctions, or orders to cease or suspend certain of its practices. The
outcome of any proceedings and associated costs and expenses could have a
material adverse impact on the Company's business. In addition, the Company is
subject to numerous laws and regulations related to the protection of human
health and safety. Such laws and regulations may pose liability on the Company
for exposure of its employees to radiation or other hazardous contamination or
failure to isolate and remove radioactive or other hazardous contaminants from
soil.
      The Company endeavors to operate its business to minimize its exposure to
environmental and other regulatory liabilities. Although no claims giving rise
to such liabilities have been asserted by the Company's customers or employees
to date, there can be no assurance that such claims cannot or will not be
asserted against the Company.

      Uncertainty of Funding. Remediation compliance requirements and attendant
costs are often beyond the financial capabilities of individuals and small
companies. To address this problem, some states have established tax-supported
trust funds to assist in the financing of compliance and site remediation. As a
consequence, in many of the states in which the Company markets its soil
remediation services, the majority, and in some cases virtually all, of the soil
remediated by the Company is paid for by large companies and/or these state
trust funds. Any substantial decrease

                                       38
<PAGE>

in this funding could have a material adverse effect on the Company's business
and financial performance. Many states have realized that the number of sites
requiring remediation and the costs of compliance are substantially higher than
were originally estimated. As a result, several states have relaxed enforcement
activities and others have reduced compliance requirements in order to reduce
the costs of cleanup. These factors have already resulted in lower levels of
cleanup activity in some states and have had a material adverse effect on the
Company's business. Continued de-emphasis on enforcement activities and/or
further reductions in compliance requirements will have an even more severe
adverse effect on the Company's business.
      The Company depends on funding from the federal and state governments, and
their agencies and instrumentalities, for compensation for its services. For
example, ThermoRetec's nuclear-remediation business provides a large portion of
its services directly or indirectly to the U.S. Department of Energy (DOE) and
the Company's engineering and design businesses perform significant amounts of
services for state and municipal governments. Thermo NUtech has experienced a
decrease in its radiochemistry laboratory work as a result of ongoing reductions
in spending at the DOE as well as a shift in DOE spending from investigative
work to cleanup work. Continued declines in spending by DOE and other
governmental agencies could have a material adverse effect on the Company's
business.

      Competition. The markets for many of the Company's services are regional
and are characterized by intense competition from numerous local competitors.
Some of the Company's competitors have greater technical and financial resources
than those of the Company. As a result, they may be able to adapt more quickly
to new or emerging technologies and changes in customer requirements, or to
devote greater resources to the promotion and sale of their services than the
Company. Competition could increase if new companies enter the market or its
existing competitors expand their service lines. There can be no assurance that
the Company's current technology, technology under development, or ability to
develop new technologies will be sufficient to enable it to compete effectively
with its competitors.

      Seasonal Influences. A majority of the Company's businesses experience
seasonal fluctuations. A majority of the Company's soil-remediation sites, as
well as the Company's fluids-recycling sites, experience declines in revenues if
severe weather conditions occur. Site remediation work and certain environmental
testing services, such as the services provided by Lancaster Laboratories,
RETEC, Randers, IEM Sealand, and Thermo NUtech, may decline in winter months as
a result of severe weather conditions. In Europe, Thermo EuroTech may experience
a decline in the feedstock delivered to and from its facilities during winter
months due to frozen waterways.

      Possible Obsolescence Due to Technological Change. Technological
developments are expected to continue at a rapid pace in the environmental
services industry. The Company's technologies could be rendered obsolete or
uneconomical by technological advances by one or more companies that address the
Company's markets or by future entrants into the industry. There can be no
assurance that the Company would have the resources to, or otherwise would be
successful in, developing responses to technological advances by others.

      Dependence of Thermo EuroTech on Availability of Waste Oil Supplies.
Thermo EuroTech's North Refinery facility has historically received a large
percentage of its oil feedstock from the former Soviet Union. North Refinery no
longer receives any oil from that nation, due to political and economic changes
that have made the transportation of waste oil difficult. To overcome this loss
of supply, North Refinery has taken steps to replace and diversify its feedstock
suppliers. No assurance can be given, however, that North Refinery will not
experience future disruptions in deliveries. Any such disruptions could have a
material adverse effect on the Company's results of operations.


                                       39
<PAGE>

      Potential Professional Liability. The Company's business exposes it to
potential liability for the negligent performance of its services, and the
Company could face substantial liability to clients and third parties for
damages resulting from faulty designs or other professional services. The
Company currently maintains professional errors and omissions insurance, but
there can be no assurance that this insurance will provide sufficient coverage
in the event of a claim, that the Company will be able to maintain such coverage
on acceptable terms, if at all, or that a professional liability claim would not
result in a material adverse effect on the Company's business, financial
condition, and results of operations.

      Dependence on Sales to Government Entities. A significant portion of the
Company's revenues is derived from municipalities, state governments, and
government utility authorities. Any decreases in purchases by these entities,
including, without limitation, decreases resulting from shifts in priorities or
overall budgeting limitations, could have a material adverse effect on the
Company's business, financial condition, and results of operations. In addition,
most of the Company's contracts require the Company to perform specific services
for a fixed fee. Contracts with governmental entities often permit the purchaser
to cancel the agreement at any time. A significant overrun in the Company's
expenses or cancellation of a significant contract could also result in a
material adverse effect on the Company's business, financial condition, and
results of operations. The Company's contracts with governmental entities are
also subject to other risks, including contract suspensions; protests by
disappointed bidders of contract awards, which can result in the re-opening of
the bidding process; and changes in government policies or regulations.

      Risks Associated with Acquisition Strategy. The Company's strategy
includes the acquisition of businesses that complement or augment the Company's
existing services. The Company does not presently intend to actively seek to
make additional acquisitions in the near future, and expects instead to
concentrate its resources on strengthening its core businesses. The Company may,
however, acquire one or more additional businesses if they are presented to the
Company on terms the Company believes to be attractive.
      Promising acquisitions are difficult to identify and complete for a number
of reasons, including competition among prospective buyers and the need for
regulatory approvals. Any acquisitions completed by the Company may be made at
substantial premiums over the fair value of the net assets of the acquired
companies. There can be no assurance that the Company will be able to complete
future acquisitions or that the Company will be able to successfully integrate
any acquired businesses. In order to finance such acquisitions, it may be
necessary for the Company to raise additional funds through public or private
financings. Any equity or debt financing, if available at all, may be on terms
that are not favorable to the Company and, in the case of equity financing, may
result in dilution to the Company's shareholders.

      Risks Associated with Spin-out of Subsidiaries. The Company adopted a
strategy of spinning out certain of its businesses into separate subsidiaries
and having these subsidiaries sell a minority interest to outside investors. As
a result of the sale of stock by subsidiaries, the issuance of stock by
subsidiaries upon conversion of convertible debentures, and similar
transactions, the Company records gains that represent the increase in the
Company's net investment in the subsidiaries. These gains have represented a
substantial portion of the net income reported by the Company in certain
periods. The Company does not expect to have transactions that will result in
such gains in the future.



                                       40
<PAGE>

      No Assurance of Development and Commercialization of Technology Under
Development. The Company is currently engaged in the development of several
technologies that may ultimately be commercialized to provide services to
customers. There are a number of technological challenges that the Company must
successfully address to complete any of its development efforts. Technology
development involves a high degree of risk, and returns to investors are
dependent upon successful development and commercialization of such technology.
There can be no assurance that any of the technologies currently being developed
by the Company, or those to be developed in the future by the Company, will be
technologically feasible or accepted by the marketplace, or that any such
development will be completed in any particular timeframe.

      Risks Associated with Cash Management Arrangement with the Parent Company.
The Company participates in a cash management arrangement with its parent
company, Thermo Electron. Under this cash management arrangement, the Company
lends its excess cash to Thermo Electron on an unsecured basis. The Company has
the contractual right to withdraw its funds invested in the cash management
arrangement upon 30 days' prior notice. Thermo Electron is contractually
required to maintain cash, cash equivalents, and/or immediately available bank
lines of credit equal to at least 50% of all funds invested under the cash
management arrangement by all Thermo Electron subsidiaries other than wholly
owned subsidiaries. The funds are held on an unsecured basis and therefore are
subject to the credit risk of Thermo Electron. The Company's ability to receive
its cash upon notice of withdrawal could be adversely affected if participants
in the cash management arrangement demand withdrawal of their funds in an
aggregate amount in excess of the 50% reserve required to be maintained by
Thermo Electron. In the event of a bankruptcy of Thermo Electron, the Company
would be treated as an unsecured creditor and its right to receive funds from
the bankruptcy estate would be subordinated to secure creditors and would be
treated on a pari passu basis with all other unsecured creditors. Further, all
cash withdrawn by the Company from the cash management arrangement within one
year before the bankruptcy would be subject to rescission. The inability of
Thermo Electron to return the Company's cash on a timely basis or at all could
have a material adverse effect on the Company's results of operations and
financial position.

      Potential Impact of Year 2000 on Processing Date-sensitive Information.
While the Company is attempting to minimize any negative consequences arising
from the year 2000 issue, there can be no assurance that year 2000 problems will
not have a material adverse impact on the Company's business, operations, or
financial condition. While the Company expects that upgrades to its internal
business systems will be completed in a timely fashion, there can be no
assurance that the Company will not encounter unexpected costs or delays. Some
services provided by the Company involve the delivery to clients of third-party
software and hardware. In addition, certain older third-party products, which
the Company no longer uses in providing its services to clients, may not be year
2000 compliant, which may expose the Company to claims. As discussed above, if
any of the Company's key suppliers or vendors experience business disruptions
due to year 2000 issues, the Company might also be materially adversely
affected. There is expected to be a significant amount of litigation relating to
the year 2000 issue and there can be no assurance that the Company will not
incur material costs in defending or bringing lawsuits. In addition, if any year
2000 issues are identified, there can be no assurance that the Company will be
able to retain qualified personnel to remedy such issues. Any unexpected costs
or delays arising from the year 2000 issue could have a material adverse impact
on the Company's business, operations, and financial condition in amounts that
cannot be reasonably estimated at this time.



                                       41
<PAGE>


                                      Selected Financial Information
(In thousands except per share amounts)             1999 (a)    1998 (b)   1997 (c)   1996 (d)     1995
- -------------------------------------------------- ---------- ----------- ---------- ---------- ---------

Statement of Operations Data
Revenues                                            $310,039   $ 298,786   $278,503   $220,484   $136,985
Net Income (Loss)                                     (1,421)      3,273       (162)     3,447      4,476
Earnings (Loss) per Share:
 Basic                                                 (.07)         .18       (.01)       .20        .26
 Diluted                                               (.07)         .17       (.01)       .18        .26

Balance Sheet Data
Working Capital                                     $ 67,043   $  69,319   $ 77,315   $ 66,008   $ 63,459
Total Assets                                         351,698     360,526    393,784    333,656    273,298
Long-term Obligations                                158,617     153,144    165,186    155,384     96,851
Shareholders' Investment                              92,157      97,130     83,526     85,870     77,217

(a) Reflects a $10.2 million pretax charge for restructuring costs.
(b) Reflects a pretax gain of $3.0 million from ThermoRetec's sale of its
    investment in a joint venture.
(c) Reflects $7.8 million of nonrecurring costs and a loss $1.5 million relating
    to the sale of the Company's J. Amerika division. Also reflects the issuance
    of $115.0 million principal amount of 4 7/8% subordinated convertible debentures,
    and a gain on issuance of stock by subsidiary of $1.5 million.
(d) Reflects the acquisition of Lancaster Laboratories in May 1995, the purchase
    of the businesses formerly operated by the environmental services joint
    venture from Thermo Instrument Systems Inc., and the issuance of a $35.0
    million promissory note to Thermo Electron to fund the purchase. Reflects
    ThermoRetec's acquisition of RETEC in December 1995, the issuance of $38.0
    million principal amount of 4 7/8% subordinated convertible debentures by
    ThermoRetec, and a gain on issuance of stock by subsidiaries of $4.1
    million. Also reflects the write-off of goodwill of $5.0 million and a loss
    on the sale of assets of $0.6 million.


                                       42
<PAGE>

Common Stock Market Information
      The Company's common stock is traded on the American Stock Exchange under
the symbol TTT. The following table sets forth the high and low sales prices of
the Company's common stock for fiscal 1999 and 1998, as reported in the
consolidated transaction reporting system.

                                                                    Fiscal 1999         Fiscal 1998
Quarter                                                           High        Low       High        Low
- --------------------------------------------------------------- ---------- ---------- ---------- ----------

First                                                            $6 3/4     $4 1/2    $11 1/8     $8 1/8

Second                                                            5          3 3/4     12 1/16     9 7/8

Third                                                             4 5/8      3 15/16    9 15/16    8

Fourth                                                            5 3/4      4 3/8      8 3/16     6 5/8

      As of April 30, 1999, the Company had 923 holders of record of its common
stock. This does not include holdings in street or nominee names. The closing
market price on the American Stock Exchange for the Company's common stock on
April 30, 1999, was $4 3/16 per share.
      Common stock of ThermoRetec Corporation and The Randers Killam Group Inc.,
the Company's majority-owned public subsidiaries, are traded on the American
Stock Exchange (symbols THN and RGI, respectively).

Dividend Policy
      The Company has never paid cash dividends and does not expect to pay cash
dividends in the foreseeable future because its policy has been to use earnings
to finance expansion and growth. Payment of dividends will rest within the
discretion of the Company's Board of Directors and will depend upon, among other
factors, the Company's earnings, capital requirements, and financial condition.



                                       43
</TABLE>


<TABLE>
<CAPTION>
<S>                                                                    <C>                  <C>
                                                                                                Exhibit 21
                              THERMO TERRATECH INC.

                         Subsidiaries of the Registrant

      As of May 29, 1999, Thermo TerraTech Inc. owned the following companies:

                                                                            STATE OR
                                                                        JURISDICTION OF       PERCENT OF
                                NAME                                     INCORPORATION        OWNERSHIP
- -----------------------------------------------------------------------------------------------------------

Holcroft (Canada) Limited                                                    Canada              100
Holcroft Corporation                                                        Delaware             100
  Holcroft GmbH                                                             Germany              100
Metallurgical, Inc.                                                        Minnesota             100
  Cal-Doran Metallurgical Services, Inc.                                   California            100
Metal Treating Inc.                                                        Wisconsin             100
Normandeau Associates, Inc.                                              New Hampshire           100
TMA/Hanford, Inc.                                                          Washington            100
The Randers Killam Group Inc. (additionally, .99% of the shares are         Delaware              94.81
  owned directly by Thermo Electron Corporation)
  Randers Engineering, Inc.                                                 Michigan             100
  Randers Engineering of Massachusetts, Inc.                                Michigan             100
  Randers Group Property Corporation                                        Michigan             100
  Redeco Incorporated                                                       Michigan             100
  Viridian Technology Incorporated                                          Michigan             100
  The Killam Group, Inc.                                                    Delaware             100
    CarlanKillam Consulting Group, Inc.                                     Florida              100
      CarlanKillam Consulting Group of Alabama, Inc.                        Alabama              100
    Thermo Consulting & Design Inc.                                         Delaware             100
      Engineering Technology and Knowledge Corporation                      Delaware             100
        Elson T. Killam Associates, Inc.                                   New Jersey            100
         BAC Killam Inc.                                                    New York             100
           N.H. Bettigole Co., Inc.                                         Delaware             100
           N.H. Bettigole P.A.                                             New Jersey            100
           N.H. Bettigole P.C.                                              New York             100
         CarlanKillam Construction Services, Inc.                           Florida              100
         Duncan, Lagnese and Associates, Incorporated                     Pennsylvania           100
         E3-Killam, Inc.                                                    New York             100
         Killam Associates, Inc.                                              Ohio               100
         Killam Management and Operational Services, Inc.                  New Jersey            100
      Fellows, Read & Associates, Inc.                                     New Jersey            100
      Killam Associates, New England Inc.                                   Delaware             100
        George A. Schock & Associates, Inc.                                New Jersey            100
        Jennison Engineering, Inc.                                          Vermont              100
Thermo Analytical Inc.                                                      Delaware             100
  Skinner & Sherman, Inc.                                                Massachusetts           100


<PAGE>


                                                                            STATE OR
                                                                        JURISDICTION OF       PERCENT OF
                                NAME                                     INCORPORATION        OWNERSHIP
- -----------------------------------------------------------------------------------------------------------

Thermo EuroTech (Delaware) Inc. (additionally, 12.17% of the shares         Delaware              87.83
  are owned directly by Thermo Electron Corporation)
  Thermo EuroTech N.V.                                                    Netherlands             87.10
    Thermo EuroTech Ireland Ltd.                                            Ireland              100
      Green Sunrise Holdings Ltd.                                           Ireland               70
        AutoRod Ltd.                                                        Ireland              100
        Green Sunrise Industries Ltd.                                       Ireland              100
        GreenStar Recycling Ltd.                                            Ireland              100
        Pipe & Drain Services Ltd.                                          Ireland              100
      GreenStar Products Ltd.                                               Ireland               70
    Grond- & Watersaneringstechniek Nederland B.V.                        Netherlands            100
    Refining & Trading Holland B.V.                                       Netherlands            100
ThermoRetec Corporation (additionally, 1.89% of the shares are              Delaware              69.12
  owned directly by The Thermo Electron Companies Inc.)
  Benchmark Environmental Corporation                                      New Mexico            100
  Eberline Holdings Inc.                                                    Delaware             100
    Eberline Analytical Corporation                                        New Mexico            100
      Thermo Hanford Inc.                                                   Delaware             100
      TMA/NORCAL Inc.                                                      California            100
  ThermoRetec Construction Corporation (formerly IEM Sealand                Virginia             100
    Corporation)
  ThermoRetec Resource Planning & Management Systems Corporation          Connecticut            100
    (formerly RPM Systems, Inc.)
  ThermoRetec Consulting Corporation (formerly Remediation                  Delaware             100
    Technologies, Inc.)
    GeoWest Golden Inc.                                                     Colorado             100
      GeoWest TriTechnics of Ohio, LLC                                      Colorado             100
    Retec North Carolina, Inc.                                           North Carolina          100
    RETEC Thermal, Inc.                                                     Delaware             100
  Thermo Fluids Inc.                                                        Delaware             100
  TPS Technologies Inc.                                                     Florida              100
    TPST Soil Recyclers of California Inc.                                 California            100
      California Hydrocarbon, Inc.                                           Nevada              100
    TPST Soil Recyclers of Maryland Inc.                                    Maryland             100
      Todds Lane Limited Partnership (1% of which is owned directly         Maryland             100*
         by TPS Technologies Inc.)
    TPST Soil Recyclers of New York Inc.                                    New York             100
    TPST Soil Recyclers of Oregon Inc.                                       Oregon              100
    TPST Soil Recyclers of South Carolina Inc.                              Delaware             100
    TPST Soil Recyclers of Virginia Inc.                                    Delaware             100
    TPST Soil Recyclers of Washington Inc.                                 Washington            100
  TRI Oak Ridge Inc.                                                        Delaware             100
  TRI Oak Ridge L.L.C. (additionally, 50% of the shares are owned           Delaware              50
    directly by Coleman Services Incorporated)
  TRUtech L.L.C.                                                            Delaware              47.5*

*Represents an interest in a joint venture.








</TABLE>



                    Consent of Independent Public Accountants
     As independent public  accountants,  we hereby consent to the incorporation
by reference of our reports dated May 11, 1999 (except with respect to the
matters discussed in Note 19, as to which the date is June 1, 1999), included in
or incorporated by reference into Thermo TerraTech Inc.'s Annual Report on Form
10-K for the year ended April 3, 1999, and into the Company's previously filed
Registration Statements as follows: Registration Statement No. 333-02269 on Form
S-2, Registration Statement No. 33-16462 on Form S-8, Registration Statement No.
33-16464 on Form S-8, Registration Statement No. 33-16465 on Form S-8,
Registration Statement No. 33-16466 on Form S-8, Registration Statement No.
333-2055 on Form S-3, Registration Statement No. 33-52824 on Form S-8,
Registration Statement No. 033-65307 on Form S-8, Registration Statement No.
033-65283 on Form S-8, Registration Statement No. 033-65281 on Form S-8,
Registration Statement No. 33-86194 on Form S-8, and Registration Statement No.
333-05263 on Form S-3.



                                                            Arthur Andersen LLP



Boston, Massachusetts
June 8, 1999




<TABLE> <S> <C>

<ARTICLE>           5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THERMO TERRATECH INC.'S ANNUAL REPORT ON FORM 10-K FOR THE PERIOD ENDED
APRIL 3, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER>        1,000

<S>                              <C>
<PERIOD-TYPE>                                 YEAR
<FISCAL-YEAR-END>                             APR-03-1999
<PERIOD-END>                                  APR-03-1999
<CASH>                                                 43,013
<SECURITIES>                                                0
<RECEIVABLES>                                          62,954
<ALLOWANCES>                                            3,577
<INVENTORY>                                             1,869
<CURRENT-ASSETS>                                      135,608
<PP&E>                                                151,219
<DEPRECIATION>                                         59,705
<TOTAL-ASSETS>                                        351,698
<CURRENT-LIABILITIES>                                  68,565
<BONDS>                                               158,617
                                       0
                                                 0
<COMMON>                                                1,958
<OTHER-SE>                                             90,199
<TOTAL-LIABILITY-AND-EQUITY>                          351,698
<SALES>                                                     0
<TOTAL-REVENUES>                                      310,039
<CGS>                                                       0
<TOTAL-COSTS>                                         247,610
<OTHER-EXPENSES>                                       10,217
<LOSS-PROVISION>                                        2,085
<INTEREST-EXPENSE>                                      8,981
<INCOME-PRETAX>                                          (808)
<INCOME-TAX>                                            1,786
<INCOME-CONTINUING>                                    (1,421)
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                           (1,421)
<EPS-BASIC>                                           (0.07)
<EPS-DILUTED>                                           (0.07)


</TABLE>


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