Frontier Oil - Cheyenne Refinery (Cheyenne, Wyoming)

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Frontier Oil Corporation is an independent oil refining and marketing company with complex refineries located in Wyoming and Kansas. Frontier's primary products of gasoline and diesel are marketed in the Rocky Mountain and Plains States.

Frontier Oil Corporation is headquartered in Houston, Texas. The subsidiary company Frontier Refining & Marketing, Inc. is located in Denver, Colorado.

The company has a 52,000 bpd refinery in Cheyenne, Wyoming and a 110,000 bpd refinery in El Dorado, Kansas.

Our Cheyenne refinery has a permitted crude capacity of 52,000 barrels per day. We market its refined products primarily in the eastern slope of the Rocky Mountain region, which encompasses eastern Colorado (including the Denver metropolitan area) and eastern Wyoming.

The Cheyenne refinery has a coking unit, which allows the refinery to process up to 100% heavy crude oil for use as a feedstock. The ability to process heavy crude oil lowers our crude supply costs because heavy crude oil is generally less expensive than other types of crude oil. Historically, heavy crude oil has accounted for 90% or more of the Cheyenne refinery's crude oil charge and the Cheyenne refinery's product mix included gasoline (41%), diesel fuel (30%) and asphalt and other refined petroleum products (29%). Crude oil is purchased from local producers and also imported via the Express Pipeline from Canada.

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