Our Mandan Refinery began operations in 1954, and today has a capacity of 74,000 barrels per day (bpd). It processes primarily sweet (low sulfur) domestic crude oil from North Dakota.

The facility manufactures gasoline, diesel fuel, jet fuel, heavy fuel oils and liquefied petroleum gas. Refined products are trucked and railed from Mandan, and also shipped east via pipeline to supply the Jamestown area, eastern North Dakota and Minnesota. 


  • Dedicated 640 acres as natural wildlife habitat.
  • Planted 11,000 trees with Boy and Girl Scouts in past 25 years for Arbor Day. 

Health and Safety

  • Achieved one of the best OSHA Recordable Rate safety performances as a site in 2014.
  • In 2015, the refinery logged 3.8 million hours without Days Away From Work (DAFW) injury. 

Community Support

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See More About Our Community Investments in the Region