National Museum of Nuclear Science & History
Fred R. Williams worked for Clinton Laboratories at the X-10 Reactor.
Harry Allen worked in procurement and supply for Los Alamos during the Manhattan Project. He was also involved in organizing preparations for the Trinity Test.
Howard T. Parr served in the 603rd Air Engineering Squadron.
Henry Fritz was a chemist in the Special Engineering Detachment assigned to the K-25 Plant in Oak Ridge, Tennesee.