| Business | Phone |
| Dailey International Inc 9629 Nw 4th St, Oklahoma City 73127 | (405) 672-1944 |
| Specialty Drilling Tools 1700 Se Grand Blvd # D, Oklahoma City 73129 | (405) 670-2225 |
| Scientific Drilling Intl 421 S Eagle Ln, Oklahoma City 73128 | (405) 787-3663 |