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PENTAGON PETROLEUM INC is a Baton Rouge, LA-based company in the Energy and Utilities sector.
Owen Oil Tools Inc is a Fort Worth, TX-based company in the Energy and Utilities sector.
Perry Oil Co Inc is a Hazard, KY-based company in the Energy and Utilities sector.
Liberty Energy is an oilfield services company that provides stimulation services to optimize well production, as well as integrated alternative fuel and power solutions for remote applications.
As of 12 September 2013, DNV and GL have merged to form DNV GL. We now form the world’s largest ship and offshore classification society, the leading technical advisor to the global oil and gas industry, and a leading expert for the energy value chain including renewables and energy efficiency. We’ve also taken a position as one of the top three certification bodies in the world.