National Museum of Nuclear Science & History
W. M. Mathis worked for Clinton Laboratories at the X-10 Reactor.
Robert J. Stock served as a sergeant in the 393rd Bombardment Squadron. He was regularly assigned as a tail gunner to the Bockscar, but did not fly on that plane during the Nagasaki bombing mission in August of 1945.
S. M. Kelly worked for the Roane-Anderson Company.
Louis Bernard Werner was an American chemist. Werner received a B.S. from the University of Idaho, and was working on his doctorate at the Univeristy of Chicago at Berkeley when he was recruited to work on the Manhattan Project at the Chicago Met Lab.