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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.
Anton Oilfield Services (Group) is a New York, NY-based company in the Energy and Utilities sector.
Alliance Pipeline Inc. is a Calgary, AB-based company in the Energy & Utilities sector.
Champion Group is a Los Angeles, CA-based company in the Energy and Utilities sector.
Milford Redi-mix Co is a Milford, MI-based company in the Energy and Utilities sector.