- Admiral Permian Resources - Reeves Co., TX
- Blackbeard Operating - Midland, TX
- Colonial Pipeline - Coalmont, TN
- ConocoPhillips - Houston, TX
- Endeavor Energy Resources - Midland, TX
- EOG Resources - Jal, NM
- MarkWest Energy Partners - Kingfisher, OK
- MarkWest Energy Partners - McMichael, PA
- MarkWest Energy Partners - Midway, PA
- MarkWest Energy Partners - Welling, PA
- Monarch Resource Partners - College Station, TX
- MPLX - Kingfisher, OK
- Petro-Hunt - Dallas, TX
- Pioneer Natural Resources - Irving, TX
- Plantation Pipeline - Atlanta, GA
- Transcontinental Gas Pipe Line - Stockbridge, GA
- Valiant Midstream - Coalgate, OK

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