Western Refining Company, L.P. is a Texas-based Fortune 200 crude oil refiner and marketer operating primarily in the Southwestern, North-Central and Mid-Atlantic regions of the United States. Western Refining (WNR) has been publicly traded on the New York Stock Exchange since January, 2006 and is the fourth largest publicly traded independent refiner and marketer in the nation.The company is headquartered in El Paso, Texas; its refineries are located in El Paso, Gallup, New Mexico and St.