- Earth Science Explorations Inc
- Earth Science Explorations Inc
- Gilbert & Phillips
- Gilbert & Phillips
- Henderson & Erikson
- Henderson & Erikson
- Herrington Exploration Co
- Herrington Exploration Co
- Jeral W Jackson Inc
- Jeral W Jackson Inc
- Mc Mahon-Bullington Drilling
- Mc Mahon-Bullington Drilling
- Quatro
- Quatro
