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Tucker Energy Services is a Tulsa, OK-based company in the Energy and Utilities sector.
Westport Technology Center is a Houston, TX-based company in the Energy and Utilities sector.
Manufacturer of Performance Engineered Lubricants since 1919.
Placid Refining Company LLC is one of the leading companies in the Energy and Utilities sector.
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.