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Marathon Oil Corporation (NYSE: MRO) is an independent international exploration and production company. Based in Houston, Texas, Marathon Oil had net proved reserves at the end of 2011 of 1.8 billion barrels of oil equivalent in North America, Europe and Africa.
Kennedy Oil is a Gillette, WY-based company in the Energy and Utilities sector.
Cass City Oil is a Cass City, MI-based company in the Energy and Utilities sector.
Brigade Energy Services is a private equity funded and growth oriented well services company that provides innovative well service solutions, high quality equipment, and personnel with unmatched experience.
Leader Energy Services Ltd. is a Calgary, AB-based company in the Energy & Utilities sector.