Air Liquide America Corp.
Israel Aircraft
Armko Industries, Inc.
John Soules Foods
Anschutz Corp.
Kelco, Inc.
APW Wyatt Equipment
Kerr McGee Corp.
Beech Aircraft Corp.
Kirby Petroleum Exploration
Big Three Industries
Larco Mining & Metal of Larymna
CapStar Drilling
Marathon Battery
Central & Southwest Service Co.
Mitsubishi Aircraft
CHA Industries
Natkin Services
Crosby Group Laboratories
New Century Energies
CMD Realty Investors
Perot Systems
CMI Corporation
Petroleum Resources
Cudd Drilling
Pride Oilfield Services
DHS Drilling
Public Service Co. of Oklahoma
Dolese Brothers Concrete
Schlumberger Well Service
Doyon Drilling
Southwestern Bell
Duncan Properties
Stingray Construction
Eby Construction Corp.
Tracor Aerospace
Exxon Corporation
Tri-Stem Engineering
Farmland Industries
Ward North America
Gates LearJet Corp.
Westinghouse Corp.
General Motors Corp.
Will Rogers Airport Authority
General Motors Assembly
Xerox Corp.
Gulfstream Aerospace Corp.
XTO Energy
Hardees
Hertz Corp.
