- Baker Oil Tools
- Basin Concrete Inc
- Basin Filtration Systems
- Coil Tubing Svc Inc
- Crude Processing
- H & H Electric
- Hydro Static Tubing Testers
- Marta-Co Of North Dakota
- Natco National Tank Co
- Northern Tubing Testing Inc
- Oilind Safety
- Plains Marketing
- S K & S Oil Field Svc
- Sanjel USA Inc
- Total Bit Svc
- Tuboscope
- Viking Inspection Inc
- Weatherford
- Westside Machine Shop Inc
- Williston Basin Inspection Svc
