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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.
Mobile Gas is one of the leading companies in the Energy & Utilities sector.
Jasper Oil Company is a Spring, TX-based company in the Energy and Utilities sector.
Coal Gas Technology Ltd. is a Calgary, AB-based company in the Energy & Utilities sector.