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Perfection Oil Co. is a Dubuque, IA-based company in the Energy and Utilities sector.
MBF Services Inc is a Roswell, NM-based company in the Energy and Utilities sector.
PetroBakken Energy Ltd. is a Calgary, AB-based company in the Energy and Utilities sector.
Robinson Oil Corp is a Santa Clara, CA-based company in the Energy and Utilities sector.
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.