| Business | Phone |
| Cross Pump Equipment Co 4803 Cardinal Dr, Charleston 25306 | (304) 925-3759 |
| Givens Crankshaft Svc 302 Hunt Ave, Charleston 25302 | (304) 342-0171 |
| Yeardley Engineering Co 3416 Chesterfield Ave, Charleston 25304 | (304) 925-2181 |
| Parco Machine Co Charleston 25301 | (304) 342-2221 |