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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.
Vetco Gray (GE Energy) is a Houston, TX-based company in the Energy and Utilities sector.
analyticalinc.com is a Dallas, TX-based company in the Energy & Utilities sector.
Tyree Oil is a Eugene, OR-based company in the Energy and Utilities sector.
Robinson Oil Corp is a Santa Clara, CA-based company in the Energy and Utilities sector.