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McMullen Oil Co. is a Clearwater, FL-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.
W M Dewey and Son Inc is a Houston, TX-based company in the Energy and Utilities sector.
Greylock Energy is headquartered in Charleston, West Virginia with offices scattered throughout West Virginia and Pennsylvania and operations across Appalachia. The company`s assets comprise more than 900,000 acres, about 4,400 wells, and 2,600 miles of pipeline. Greylock`s leadership is an experienced team with decades in the energy industry and possessing a wealth of knowledge and unmatched expertise relating to operations, particularly in the eastern United States.
WALDEMAR S. NELSON and COMPANY Inc is a New Orleans, LA-based company in the Energy and Utilities sector.