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Petroleum Development Corporation is a Denver, CO-based company in the Energy & Utilities sector.
Stevens Drilling Envmtl Svcs is a Maple Plain, MN-based company in the Energy and Utilities sector.
Petroleum Helicopters International, Inc., is an American commercial helicopter operator, founded in 1949, by Robert L.
North Atlantic Refining Ltd. is a Come By Chance, NL-based company in the Energy & Utilities sector.
Advantage Valve Maintenance Ltd. is a Grande Prairie, AB-based company in the Energy & Utilities sector.