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ENERTEC CORPORATION
Reorganized as Enertec Inc under Chapter 11 of the Bankruptcy Code in December 1994



WEST CENTRAL TEXAS OIL & GAS ASSOCIATION
Merged with North Texas Oil & Gas Association (NTOGA) in 2000, to form Texas Alliance of Energy Producers



WEST COAST INTERNATIONAL
Acquired by Weatherford International Inc in January 1999



WEST TEXAS POWER SYSTEMS
See Warren Cat.



WESTERN ATLAS INTERNATIONAL INC
Acquired by Landmark Graphics Corporation in 1996.



WESTERN STRESS INC
SEE Analytic Stress Relieving Inc.



EASTMAN WHIPSTOCK
Merged with Norton Christensen to form Eastman Christensen in 1986.



WHEATLEY
See Cameron Valves & Measurement Systems



WILLBROS ENERGY SERVICES COMPANY - WESCO
No longer exists as a subsidiary of Willbros Group Inc



WILLIAMS ENERGY VENTURES
see Williams Energy Services LLC



WILLIAMS TOOL CO
Acquired by Weatherford International Inc in November 1999



WILSON FISHING SERVICES
See Baker Oil Tools.



WKM ASSOCIATES
Acquired by Measurement Instruments East (MIE) in June 1999, see MIE - WKM



BREDERO PRICE COMPANY
See ShawCor Pipe Protection LLC



WOODWARD CLYDE GROUP
Acquired by URS Corp in November 1997



WORD INDUSTRIES
See Shaw Word Industries Fabricators, Inc



WRIGHT LOGUE & ASSOCIATES
Merged with Licenergy in 2000 to form Energy Solutions International



YARWAY CORPORATION
Consolidated into Tyco Valves & Control Inc in 2004



ZURN INDUSTRIES INC
See Clarage Ltd



ZYCOR INC
Merged with Landmark Graphics Corporation in 1989.



BENCHMARK ENVIRONMENTAL CORPORATION
See Eberline Services Inc



CONTRACTORS MANUFACTURING SERVICES INC
See Robbins HDD



NEYRFOR TURBODRILLING COMPANY INC
Smith International acquired the turbodrilling assets of Neyrfor-Weir Ltd in August 2002, see SII Neyrfor Iinc



SKYVISION INC
See Petris Technology Inc



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