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Marathon Oil Corporation (NYSE: MRO) is an integrated international energy company engaged in exploration and production, oil sands mining, integrated gas, and refining, marketing and transportation.
Marmi Natural Stone is a Norcross, GA-based company in the Energy and Utilities sector.
Black Raven Energy is a Denver, CO-based company in the Energy and Utilities sector.
Nielson and Associates Inc is a Cody, WY-based company in the Energy and Utilities sector.
Tecon Oil Services is a Houston, TX-based company in the Energy and Utilities sector.