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Petroleum Helicopters International, Inc., is an American commercial helicopter operator, founded in 1949, by Robert L.
Kaweah Pump Inc is a Visalia, CA-based company in the Energy and Utilities sector.
Williams Brothers Roofing & Siding Co Inc is a Dayton, OH-based company in the Energy and Utilities sector.
Cygnus Oil and Gas is a Houston, TX-based company in the Energy & Utilities sector.