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The Subsurface Group is a Houston, TX-based company in the Energy and Utilities sector.
Tri-Valley Corporation is a Bakersfield, CA-based company in the Energy and Utilities sector.
Petroleum Helicopters International, Inc., is an American commercial helicopter operator, founded in 1949, by Robert L.
Fairway Minerals Co is a Tulsa, OK-based company in the Energy and Utilities sector.
Vista Services is a Eunice, NM-based company in the Energy and Utilities sector.