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Frontier Oil, begun in 1949 as Wainoco Oil, was a U.S. energy company. Its headquarters were located in Houston, TX,〔"(Contact )." Frontier Oil. Retrieved on December 8, 2009.〕 and its subsidiary company, Frontier Refining & Marketing, Inc., is located in Denver, CO. Frontier's primary products were gasoline, diesel, and asphalt, and were marketed in the Rocky Mountain and Plains States. Frontier Oil owned refineries in Cheyenne, WY and El Dorado, KS. The Cheyenne Refinery has a capacity of (bpd) and the El Dorado Refinery has a capacity of .〔(General Information - Frontier El Dorado Refining Company )〕〔(El Dorado Kansas - Frontier Refining, Inc. - Frontier Oil Corporation, Staff, Offices )〕 On November 7, 2007, Frontier announced that the third quarter of 2007 had been the most profitable in the company's history. They reported a total income of US $137,200,000 for the quarter, and $432,700,000 for the year to that point.〔(Press Release - Frontier Oil Corporation )〕 Frontier merged with Holly Corporation effective as of July 1, 2011 to form HollyFrontier Corporation.〔''SEC EDGAR Filing defm14a'' (Frontier Proxy Statement - May 23, 2011 )〕〔''Forbes.'' "Holly-Frontier Refining Merger: It Sure Took Long Enough." February 22, 2011. Accessed July 1, 2011. ()〕〔''Official Press Release.'' "HollyFrontier Corporation completes merger" July 1, 2011 ()〕 ==See also== * List of oil refineries 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Frontier Oil」の詳細全文を読む スポンサード リンク
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