| Business | Phone |
| Cascade Drilling Inc 3632 Omec Cir, Rancho Cordova 95742 | (916) 638-1169 |
| Redline Directional Inc 3193 Fitzgerald Rd, Rancho Cordova 95742 | (916) 424-8697 |
| Cal-Nev Geoexploration Inc 11358 Amalgam Way, Rancho Cordova 95670 | (916) 635-2214 |
| Mitchell Drilling Environmentl 10618 Milazzo Way, Rancho Cordova 95670 | (916) 631-3583 |
| Sacramento Drilling Inc 3299 Luyung Dr, Rancho Cordova 95742 | (916) 638-1766 |