John H. Mitchell died of congestive heart failure October 14, 2012, in Gresham, Oregon, at the age of 91. He was born in Greenfield, Missouri and spent his childhood near Dove Creek, Colo.
John attended Carbon College in Price, Utah. He also attended the University of Utah but left formal education to work for the New Remington Arms Plant in Salt Lake City, Utah until he was transferred to the E.I. DuPont Corp. to work on the secret U.S. Government project at Hanford, Wash.