| American Helicopter Drilling | 970-663-1234 | 2502 W County Road 14 | Loveland | CO | 80537 |
| B & B Drilling Co | 970-242-3918 | 960 Belford Ave | Grand Junction | CO | 81501 |
| Brock Bit Service | 970-434-3650 | 553 Grand Valley Dr | Grand Junction | CO | 81504 |
| Caisson-Excavating | 970-243-3573 | 529 Holly Park Dr | Fruita | CO | 81521 |
| Canfield Drilling Co | 970-867-6302 | 111 West St | Fort Morgan | CO | 80701 |
| Cardin James Bit Service | 970-242-3159 | 2510 Highway 6 And 50 # U | Grand Junction | CO | 81505 |
| Certified Drillers | 970-677-2263 | 415 W 4th | Dove Creek | CO | 81324 |
| Godbe Drilling | 970-240-6106 | 62802 Ohlm Rd | Montrose | CO | 81401 |
| Ground Water Development Inc | 970-249-4048 | 1570 6450 Rd | Montrose | CO | 81401 |
| Hersh Harry Well Drilling & Pump Service | 970-667-4096 | 9181 W County Road 38e | Loveland | CO | 80538 |
| Hilyard Bit Service | 970-493-3018 | 451 Industrial Dr | Fort Collins | CO | 80524 |
| Himes Drilling Company Inc | 970-242-8893 | 2390 Highway 6 And 50 # U | Grand Junction | CO | 81505 |
| Keeton Drilling | 970-327-4602 | 262 Juniper Dr | Norwood | CO | 81423 |
| Kirby Bit Service | 970-242-6975 | 130 29-3/4 Rd | Grand Junction | CO | 81503 |
| Kissner B F Drilling | 970-856-3177 | 640-1 S Grand Mesa Dr # 4 | Cedaredge | CO | 81413 |
| L A Smith Drilling Co Inc | 970-242-1554 | 2388 Leland Ave | Grand Junction | CO | 81505 |
| Mining Construction Services | 970-243-3834 | 2224 Saddlehorn Rd | Grand Junction | CO | 81503 |
| Northern Colorado Caisson Drilling | 970-221-3448 | 1050 Country Club Rd | Fort Collins | CO | 80524 |
| Pennington Construction | 970-221-8518 | 2704 N Shields St | Fort Collins | CO | 80524 |
| Rdk Service | 970-963-8718 | PO Box 1996 | Carbondale | CO | 81623 |
| Rental Supply | 970-242-7905 | 2906 Highway 50 # U | Grand Junction | CO | 81503 |
| Richards & Richards | 970-864-7488 | 27370 W 10th Rd | Nucla | CO | 81424 |
| San Juan Drilling | 970-249-6470 | 17923 6250 Rd | Montrose | CO | 81401 |
| Smith International Inc | 970-434-4064 | 465 33-1/2 Rd | Clifton | CO | 81520 |
| Stoneman Drilling | 970-625-1421 | 1560 County Road 293 | Rifle | CO | 81650 |
| Stute Construction Co Inc | 970-226-5387 | 6025 S Shields St | Fort Collins | CO | 80526 |
| Williams Bob Drilling Co | 970-641-1084 | 214 W Denver Ave | Gunnison | CO | 81230 |
