| Allegheny Energy |
Dupont |
Potomac Electric Power Co. |
| Amergen Energy |
Gainesville Regional Utilities |
Reliant Energy |
| American Power Services |
General Electric International |
RG&E |
| American Ref-Fuel |
GE Tidewater Service Center |
Salt River Project |
| Ameri-Kart |
Georgia Power |
San Antonio City Public Utilities |
| Arizona Public Service |
Great Northern Paper |
Schuylkill Energy Resources |
| Black & Veatch |
Hillsdale Public Utilities |
South Carolina Electric & Gas |
| BOC Gases |
Indiana-Kentucky Electric |
Southwire |
| Buckbee-Mears |
Indianapolis Power & Light |
Superior Dairy |
| C&SW |
Industrial Boiler & Mechanical |
Tampa Electric |
| Central Illinois Light Co. |
Invensys Power Meter |
Toledo Edison |
| Cincinnati Gas & Electric |
Kentucky Utilities |
Turbo Filtration Corporation |
| Columbia Gas Transmission |
Little Tikes |
TVA |
| Crompton Industries |
Mirant |
Western Kentucky Elec Co-op |
| Dietrich Industries |
Omaha Public Power District |
|
| Dominion Power Generation |
Owens |
|
