Western Refining, Inc. operates as an independent crude oil refiner and marketer of refined products. The company operates in four segments: Refining, NTI, WNRL, and Retail. The Refining segment owns and operates two refineries that process crude oil and other feed stocks primarily into gasoline, diesel fuel, jet fuel, and asphalt; and markets refined products to various customers, including wholesale distributors and retail chains. The NTI segment owns and operates refining and transportation assets; and operates and supports retail convenience stores primarily in the Upper Great Plains region. As of December 31, 2014, this segment operated 165 retail convenience stores and supported 89 franchised retail convenience stores. The WNRL segment owns and operates terminal, storage, and transportation and storage infrastructure; and wholesale assets consisting of a fleet of crude oil and refined product truck transports, as well as distributes commercial wholesale petroleum products. The Retail segment operates retail convenience stores that sell gasoline, diesel fuel, and convenience store merchandise; and unmanned commercial fleet fueling locations located in the Southwest. As of December 31, 2014, this segment operated 230 service stations and convenience stores or kiosks located in Arizona, Colorado, New Mexico, and Texas. Western Refining, Inc. was founded in 1993 and is headquartered in El Paso, Texas.