| Business | Phone |
| Ajax Industries 658 Kalamath St, Denver 80204 | (303) 893-9222 |
| Environmental Drilling Supply 5806 Franklin St, Denver 80216 | (303) 297-9215 |
| Grantprideco Read Hycalog 216 16th St, Denver 80202 | (303) 629-9311 |
| M-Ihdd Mining & Waterwell 410 17th St # 1000, Denver 80202 | (303) 572-3011 |
| Portadrill Corp 5970 Marion Dr, Denver 80216 | (303) 296-6121 |