| Business | Phone |
| Anchor Drilling Fluids Usa Inc 410 17th St # 540, Denver 80202 | (303) 892-5610 |
| Dynamic Drilling Fluids 216 16th St # 915, Denver 80202 | (303) 573-6827 |
| Rocky Mountain Fluid Tech 1630 Welton St, Denver 80202 | (303) 592-9250 |
| Newpark Drilling Fluids 410 17th St, Denver 80202 | (303) 623-2205 |