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
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.