Press Releases Hyperion Energy Center Issued Air Permit September 15, 2011 PDF    E-mail Hyperion Energy Center Awaits Ruling on Air Permit July 28, 2011 PDF    E-mail Preheat Systems will Reduce Emissions at Hyperion Refinery February 1, 2011 PDF    E-mail View All

Media Coverage Hyperion's Phillips: Ending the Lull September 29, 2009 PDF    E-mail Public comment period helpful to Hyperion, DENR April 16, 2009 PDF    E-mail Common ground found at first House debate August 21, 2008 PDF    E-mail View All

Relevant Articles South Dakota lifts regulations for truckers transporting diesel fuel, propane gas November 3, 2008 PDF    E-mail Third day of gas prices spikes September 15, 2008 PDF    E-mail Ike Shutters 20% of U.S. Refining Capacity September 14, 2008 PDF    E-mail View All