| Business | Phone |
| Frontline Geoservices 4141 Katy Hockley Rd, Katy 77493 | (281) 371-2800 |
| Bayshore Exploration Llc 20501 Katy Fwy, Katy 77450 | (281) 646-1919 |
| Cidra 16600 Park Row, Katy 77450 | (832) 201-4240 |
| Trafalgar Exploration Svc 20114 Brondesbury Dr, Katy 77450 | (281) 599-0406 |
| Sti 4141 Katy Hockley Rd, Katy 77493 | (281) 371-2700 |