- A & M Technical Svc
- A J Orr's Laboratory
- Anchor Testing
- Anchor Testing
- Anderson & Assoc Inc
- Engineering Partners Intl
- Franklin Research Assoc
- Franklin Research Assoc
- Houston Metallurgical Lab Inc
- Houston Metallurgical Lab Inc
- Inter Corr Intl
- Inter Corr Intl
- Metallurgical Engineering Svc
- Permian Basin Metallurgical
- Pmi Specialists Inc
