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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.
NOV Inc. is an American multinational corporation based in Houston, Texas.
Hard Rock Exploration Inc is a Charleston, WV-based company in the Energy and Utilities sector.
Bean Resources Inc is a Lafayette, LA-based company in the Energy and Utilities sector.