National Museum of Nuclear Science & History
John DoLong was a guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. H. Williams worked for the Roane-Anderson Company.
Hardin worked in the United States Engineer District Office.
Melvin H. Bierman served as a sergeant in the 393rd Bombardment Squadron. Bierman was regularly assigned as a tail gunner in the Up An’ Atom, but did not fly in that plane in the August 1945 bombing missions on Hiroshima and Nagasaki.