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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.
irontechrig is a Edmonton, AB-based company in the Energy & Utilities sector.
Mudlogging Co is a Houston, TX-based company in the Energy & Utilities sector.
American Liberty Oil Company is a Kaufman, TX-based company in the Energy & Utilities sector.
Red Arrow Energy, LLC is a Houston, TX-based company in the Energy & Utilities sector.