- American Trenchless
- B & W Road Boring Co
- B & W Road Boring Co
- Bartek Construction Co
- Bartek Construction Co
- Bexar Pipeline & Utilities
- Bexar Pipeline & Utilities
- Bexar Pipeline & Utilities
- Borco Of Texas
- Bortunco-Boring & Tunneling
- Bortunco-Boring & Tunneling Co
- Bryant & Frey Construction
- Bryant & Frey Construction
- C E Yarborough Inc
- CAB Construction Co
- Chuck Tunneling & Boring
- Circle H Contractors LP
- Circle H Contractors LP
- Dead On Directional Inc
- Digco Utility Construction
- Doc's Road Boring Inc
- EBR Road Boring Inc
- EBR Road Boring Inc
- H & I Boring & Tunneling
- H & I Boring & Tunneling
- Haro's Brother Co
- Harris Construction Co
- HDD Bailey
- HDD Bailey
- Hiboring & Tunneling
- Hiboring & Tunneling
- J D Williamson Construction
- Joe Mc Elreath Co Inc
- Kelly Enterprises
- Kelly Enterprises
- Laney Inc
- Lone Star Road Boring
- Longhorn Road Boring Co
- M D Jones Boring
- Metro Repair Co
- Mikels Construction Co Inc
- Mikels Construction Co Inc
- Morris Construction
- Municipal Service Inc
- Municipal Service Inc
- Municipal Service Inc
- Municipal Service Inc
- P Penix Co
- Perry Williams Inc
- Perry Williams Inc
- Perry Williams Inc
- Planetary Utilities Inc
- Porta Mole Underground Boring
- Pro-Tap Inc
- Pro-Tap Inc
- Rice Tunneling & Boring
- Seaboard Boring LTD
- Southland Contracting Inc
- Southland Contracting Inc
- Southwest Horizontal Drilling
- Stubblefield Construction
- Stubblefield Construction
- Texas Road Boring Inc
- Valley Road Boring Svc
- Valley Road Boring Svc
- West Texas Boring Co
- Williamson Road Boring
- Williamson Road Boring
- Williamson Road Boring