|
 - Allegheny Ludlum Corp.
- Allied Signal
- Badger Meter
   - Bodycote
 - Brown & Sharpe
- Caterpillar, Inc.
- Coltec Industries
- Electrolux
   - Gibralter Steel
   - Ingersoll-Rand
|
- Lindberg Heat Treating
 - Lukens Steel
- Mercury Marine
- Moen
 - Nucor Fastener
- Olin Corp.
- Parker Hannifin
 - Pridgeon and Clay
- Purolator
- Robert Bosch Corp.
- Rockwell International
 - Ryobi Outdoor Products
- Schlumberger
- Skil
  - Timken Company
 - U.S. Navy
- U.S. Steel
- Vickers
|
