| Business | Phone |
| Access Soil Drilling San Jose 95112 | (408) 808-2200 |
| American Drilling 1300 Old Bayshore Hwy, San Jose 95112 | (408) 795-1700 |
| Bud's Drilling 4964 Wayland Ave, San Jose 95118 | (408) 264-8531 |
| California Caisson Shoring Inc 6525 Little Falls Dr, San Jose 95120 | (408) 997-9100 |
| Exploration Geoservices Inc 1575 Industrial Ave, San Jose 95112 | (408) 280-6822 |
| J W Drilling & Sons 540 Pamlar Ave, San Jose 95128 | (408) 295-1234 |