| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | E D Markham | Gas Operator | Nov 1978 | |
| 2 | E. Conway Butts, Inc. | Oil & Gas Operator | Apr 1991 | |
| 3 | Eagle Oil & Gas, Inc. | Oil & Gas Operator | Nov 1984 | |
| 4 | Ensight Energy Management, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2005 |