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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.
F K G Oil Company is a Belleville, IL-based company in the Energy & Utilities sector.
HKN or Harken Oil & Gas is a Southlake, TX-based company in the Energy and Utilities sector.
Mc Connell Scully Inc is a Homer, MI-based company in the Energy and Utilities sector.