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Madagascar Oil SA is an oil company operating in Madagascar.
Diversified Energy Company plc, formerly Diversified Gas & Oil plc, is a gas and oil production company operating in the Appalachian Basin in the United States.
GS Drilling is a Bakersfield, CA-based company in the Energy and Utilities sector.
Howard Concrete Co is a Glen Ellyn, IL-based company in the Energy & Utilities sector.
OMV (formerly abbreviation for Österreichische Mineralölverwaltung Aktiengesellschaft) is an Austrian multinational integrated oil, gas and petrochemical company which is headquartered in Vienna, Austria.