- Aera Energy
- Allison Transmissions
- Ameristeel
- Boise Cascade
- Calpine
- Canadian Overhead
- Cargill
- Cerestar
- Colgate-Palmolive
- Consolidated Edison
- Delphi
- Duke Power
- El Paso Energy
- ExxonMobil
- General Electric
- General Motors
- Georgetown Steel
- Georgia Pacific
- Idaho Power
- Inland Steel
- International Paper
- Nabisco
- NASA
- Nestle Waters
- Northern States Power
- Northrop Grumman
- New York City Transit
- Progress Energy
- Tennessee Valley Authority
- United States Navy
- United States Agency of International Development
- Walgreens
