| Business | Phone |
| American Trenchless 6315 Harmon St, Houston 77016 | (281) 449-3569 |
| Borco Of Texas 2413 Frick Rd, Houston 77038 | (281) 405-0452 |
| North Houston Pole Line Lp 1608 Margaret St, Houston 77093 | (713) 691-4102 |
| Doc's Road Boring Inc 6315 Hermann Rd, Houston 77050 | (281) 449-6311 |
| Ebr Road Boring Inc 8803 Blueberry St, Houston 77049 | (281) 456-0663 |
| Mikels Construction Co Inc 9359 Friendly Rd, Houston 77093 | (713) 691-5192 |
| H & I Boring & Tunneling 6315 Hermann Rd, Houston 77050 | (281) 449-3569 |
| Hiboring & Tunneling Houston 77039 | (281) 442-3610 |
| Kelly Enterprises 13205 Ralph Culver Rd, Houston 77086 | (281) 931-8495 |
| Laney Inc 11900 Hirsch Rd, Houston 77050 | (281) 987-2511 |