- Acme Steel Buildings, Inc.
- Baldwin-Madden Energy, LLC
- Caruthers Producing Co. Inc.
- Commercial Construction & Development, LLC
- C&C Management Enterprises, L.L.C.
- Duke Energy Field Services, Inc.
- Electric Supply Company, Inc.
- Elm Grove Plantation, Inc.
- EnSight III Energy Partners, LP
- Enterprise TE Products Pipeline Company, LLC
- WildHorse Resources, LLC
- Fischbach-Moore Corp.
- Goodrich Petroleum Company, LLC
- Grigsby Petroleum, Inc.
- Hanson Aggregate West
- Nadel & Gussman, LLC.
- Pride Exploration, Inc.
- QEP Energy Company
- Riverstone Energy, LP
- Snyder Land Management, LLC.
- TransCanada USA Pipeline Services, LLC
- ANR Pipeline Company
- Stroud Petroleum, Inc.
- Tellus Operating Group, LLC
- TGG Pipeline, Ltd.
- U.L. Coleman Companies
- United Technologies Automotive Inc.
- WESCO Distribution
- Wilhite Electric Co. Inc.
- Will-Drill Resources, Inc.
- XTO Energy, Inc.
- Willis-Knighton Medical Center
- EXCO Resources, Inc.