| Business | Phone |
| Crh Engineers 1300 W Aluminum St, Butte 59701 | (406) 782-0328 |
| Pioneer Technical Svc 63 1/2 W Broadway St, Butte 59701 | (406) 782-5177 |
| Montana Economic 65 E Broadway St, Butte 59701 | (406) 533-6820 |
| Mse Technology Applications 200 Technology Way, Butte 59701 | (406) 494-7100 |
| Hkm Engineering Inc 1015 S Montana St, Butte 59701 | (406) 723-8213 |