| Company | FOUR WAY TEXAS LIMITED PARTNERSHIP |
| Business Number | 2616800 |
| Company | COLDEN TUBING COMPANY, LLC |
| Business Number | 2065723 |
| Company | STURGIS ASSOCIATES, L.P. |
| Business Number | 1780469 |
| Company | BEE TREE TEXAS LIMITED PARTNERSHIP |
| Business Number | 1647358 |
| Company | BUCKEYE-BEE TREE LIMITED PARTNERSHIP |
| Business Number | 1627566 |