Hyperion has been trying to build a new refinery in Elk Point, SD.
US oil and gas company Hyperion Energy has said that it has delayed a project to construct a US$10bn greenfield refinery in South Dakota from 2010 to 2011. The 400,000 barrel per day (b/d) Elk Point refinery is planned as part of an integrated project including a power station. If the project goes ahead, Elk Point will be the first refinery built in the United States in 34 years.
http://www.allbusiness.com/energy-utilities/utilities-industry-electric-power/14565771-1.html