| Business | Phone |
| Associated Design Inc 3101 Lien St, Rapid City 57702 | (605) 348-3538 |
| Black Hills Machine 2221 S Plaza Dr, Rapid City 57702 | (605) 341-5174 |
| Coon's Machine Shop 1120 W Rapid St, Rapid City 57701 | (605) 342-0336 |
| Pro Automotive Machine 1305 E Fairmont Blvd, Rapid City 57701 | (605) 348-4819 |
| Hills Materials Co 702 Spruce St, Rapid City 57701 | (605) 394-3335 |
| Manufacturing Solutions 2130 Dyess Ave, Rapid City 57701 | (605) 355-6870 |
| Microlab Machine & Tool Po Box 53, Rapid City 57709 | (605) 348-7431 |
| M G Machining Svc 312 Wright St, Rapid City 57701 | (605) 355-0185 |