- Air Products and Chemicals, Inc.
- Albemarle Corp.
- ALCOA, Inc.
- Ameran Corporation
- Anthem Inc. (Blue Cross Blue Shield)
- BAE Systems
- Baker Hughes
- Bechtel Bettis, Inc.
- Bently Nevada
- Betz Dearborn
- BHP Billiton
- Boeing Company
- Borg Warner Automotive, Inc.
- Braskem
- British Petroleum
- Cargill, Inc.
- Cessna Aircraft
- Coastal Refining Corp.
- COBRA Insurance
- Coca-Cola Company
- Commercial Alcohols, Inc.
- Consumers Energy
- Department of Energy
- Dow Chemical Company
- Dow Reichhold, LLC.
- Duke Energy
- El Paso Energy
- Electric Power Research Institute
- Equate
- Equilon Pipeline, LLC
- Ericsson Inc.
- Federal Aviation Administration
- Fonterra
- General Electric
- Georgia Gulf Corp.
- Georgia Pacific Corp.
- GlaxoSmithKline
- Goodrich
- Guidant Corp.
- Hercules Inc.
- Hexcel Corp.
- Holcim, Inc.
- Honeywell
- Huntsman Corp.
- IBM
- Kellogg, Brown & Root
- Koch Hydrocarbons, LP
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- Kuwait National Petroleum Company
- L.A. Dep't of Child & Family Services
- LaFarge
- Lawrence Livermore National Lab
- Lockheed Martin
- Los Alamos National Lab
- Los Angeles Dept. of Water and Power
- lyondellbasell
- Marathon
- Montana Power Company
- Moog
- Motiva Enterprises LLC
- NASA
- National Park Service
- National Semiconductor
- Nationwide Insurance
- New Piper Aircraft, Inc.
- Northrop Grumman Corp.
- Parker
- PepsiCo
- Pétromont, Inc.
- Pharmacia
- PPG Industries, Inc.
- Praxair, Inc.
- Progressive Insurance
- Puget Sound Naval Shipyard
- Quaker Oats
- Raytheon
- Rio Tinto
- Rohm and Haas / Morton Salt
- SASOL North America, Inc.
- Sassret
- SGS North America
- Shell
- Siemens
- Sinclair
- Sithe Energy, Inc.
- Solo Cup Company
- Solvay
- Southern California Edison
- Southern Company
- Sprint
- Teck Cominco
- Texas Dept. of Environmental Quality
- The Industrial Company
- Tidewater Marine
- VALE
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