| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Gary-Williams Co (The) | Denver, CO 80202 | Oil Operator | Nov 2009 |
| 2 | Gary-Williams Oi | Oil & Gas Operator | Jun 1989 | |
| 3 | Gerstner, Joe | Ness City, KS 67560 | Oil Operator | Mar 2016 |
| 4 | Graham-Michaelis | Oil & Gas Operator | Nov 1996 |