HollyFrontier Corporation First Quarter 2012 Earnings Release and Conference Webcast

DALLAS, April 12, 2012 /PRNewswire/ -- HollyFrontier Corporation (NYSE: HFC) plans to announce results for its quarter ended March 31, 2012 on May 7, 2012, before the opening of trading on the NYSE. The company has scheduled a webcast conference on May 7, 2012 at 10:00AM Eastern time to discuss financial results.

This webcast may be accessed at: http://www.videonewswire.com/event.asp?id=86420

An audio archive of this webcast will be available using the above noted link through May 21, 2012.

HollyFrontier Corporation, headquartered in Dallas, Texas, is an independent petroleum refiner and marketer that produces high value light products such as gasoline, diesel fuel, jet fuel and other specialty products. HollyFrontier operates through its subsidiaries a 135,000 barrels per stream day ("bpsd") refinery located in El Dorado, Kansas, a 125,000 bpsd refinery in Tulsa, Oklahoma, a 100,000 bpsd refinery located in Artesia, New Mexico, a 52,000 bpsd refinery located in Cheyenne, Wyoming and a 31,000 bpsd refinery in Woods Cross, Utah. HollyFrontier markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states. A subsidiary of HollyFrontier also currently owns a 42% interest (including the general partner interest) in Holly Energy Partners, L.P.

Information about the Company may be found on its website at www.hollyfrontier.com.

SOURCE HollyFrontier Corporation

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http://www.hollyfrontier.com