Local firm hopes to build lethal fences : company to bid on federal prison project / St. Paul Pioneer Press, 6 July 2005

http://www.twincities.com/mld/twincities/news/12061258.htm
Mark Scolforo
"Seven high-security federal prisons will be erecting fences that can kill prisoners in a $10 million project intended to allow the institutions to operate with fewer perimeter guards."