| Business | Phone |
| Dixie Foundation Drilling Co 8207 Leghorn St, Houston 77040 | (713) 329-9233 |
| Ace N The Hole Drilling 4514 Libbey Ln, Houston 77092 | (281) 782-4849 |
| All-Tech Crane & Drilling 3806 Pinemont Dr, Houston 77018 | (713) 686-0999 |
| Bobcat Pier Drilling 8625 Schumacher Ln, Houston 77063 | (713) 978-6101 |
| Charter Drilling Co 6833 Midvale St, Houston 77087 | (713) 643-2438 |
| Digger Foundation Drilling Inc 3647 Anderson Rd, Houston 77053 | (713) 433-8530 |
| Mobile Drilling Co 15402 Sellers Rd 21b, Houston 77060 | (281) 591-6843 |
| Ground Hog Foundation Drilling 15722 Morales Rd, Houston 77032 | (281) 442-0300 |
| Lifesaver Drilling 7504 Manning Ln, Houston 77075 | (713) 991-5230 |
| Kelley Foundation Svc 11123 Forrest Valley Dr, Houston 77065 | (281) 469-9200 |