National Museum of Nuclear Science & History
Warren Johnson worked for Clinton Laboratories at the X-10 Reactor.
James King worked at the Y-12 Plant in Oak Ridge, Tennessee, in the uranium purification process from February 1944 to February 1947.
Calvin B. Popwell served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Big Stink, and he and his crew were later reassigned to Luke the Spook.
