• ALCOA
• APAC
• AK Steel
• ASARCO
• American Axle
• BP
• Bechtel
• Atlantic Steel
• AT&T
• Boeing
• Boise Cascade
• DaimlerChrysler
• City of Los Angeles
• Colt Construction
• Conoco Phillips
• Dallas Area Rapid Transit
• Department of Energy
• Dow
• Dyn McDermott
• E.I. Du Pont de Nemours
• Exxon Mobil
• Fluor
• Ford Motor Company

• General Electric
• General Motors
• Georgia Pacific
• Gerdau Ameristeel
• Goodrich
• Haynes International
• IBM
• International Paper
• IUOE
• Johnson Controls
• Kaiser Aluminum
• Kansas City Power & Light
• Kerr McGee
• Kodak
• Lawrence Livermore Nat’l Labs
• Lawrence Berkeley Nat’l Labs
• Lockheed Martin
• Los Alamos National Labs
• Marathon Petroleum
• Michelin
• Mittal Steel
• National Steel
• NUMMI

• Pacificorp
• Panama Canal Commission
• Peabody Coal
• Perini
• Portland General Electric
• P.J. Dick
• Rockwell International
• Shell Oil
• Smurfit
• Stanford Linear
• Suncor
• Teledyne Wah Chang
• Texaco
• Trinity Industries
• United Technologies
• U.S. Dept. of Defense
• U.S. Navy
• U.S. Steel