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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.
Walter Oil and Gas Corporation is a Houston, TX-based company in the Energy and Utilities sector.
Professional Projects Inc is a Cypress, TX-based company in the Energy and Utilities sector.
Placid Refining Company LLC is one of the leading companies in the Energy and Utilities sector.
Five Star Rig and Supply is a Oklahoma City, OK-based company in the Energy and Utilities sector.