National Museum of Nuclear Science & History
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Cecil N. King served in the 393rd Bombardment Squadron.
W. H. Hale worked for the Edenfield Electric Company.
William Karush (1917-1997) was an American mathematician and physicist. After earning his Ph.D. from the University of Chicago in 1942, Karush worked briefly at the Carnegie Institution of Washington before returning to Chicago to join the Manhattan Project.
Elery M. Groves served in the 1027th Air Material Squadron.