- Alexander Vacuum Research Inc
- Buxcom Net Inc
- Cardinal Health
- Gamma Laboratories
- Gamma Laboratories
- Lambda Inc
- Landauer Inc
- MGP Instruments
- Microtec Services Inc
- Microtec Services Inc
- N Wood Counter Laboratory Inc
- Radiological Health Svc
- Rexon Components
- Source Production & Equip Co
- Steri Genics
- Sun Nuclear Corp
- Warrington Inc
