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Guttman Oil Company is a Belle Vernon, PA-based company in the Energy and Utilities sector.
Crown Central Petroleum Corporation is a large independent refiner and marketer of petroleum products. The Company owns and operates two high-conversion refineries with a combined capacity of 152,000 barrels per day of crude oil. The Company is also an
Quantum Energy Technologies is a company that develops premium MWD, rotary steerable, drilling motors, relines, and digital solutions for oilfield drilling operations.
Marathon Oil Corporation (NYSE: MRO) is an integrated international energy company engaged in exploration and production, oil sands mining, integrated gas, and refining, marketing and transportation.