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Petroleum Helicopters International, Inc., is an American commercial helicopter operator, founded in 1949, by Robert L.
Delta Western is a Seattle, WA-based company in the Energy and Utilities sector.
Hunting plc is a British-based supplier to the oil and gas industry.
Acero Engineering Inc. is a Calgary, AB-based company in the Energy & Utilities sector.
BLSR Operating is a Rosharon, TX-based company in the Energy and Utilities sector.