National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
Howe worked at the 300 Area at Hanford during the Manhattan Project.
Elery M. Groves served in the 1027th Air Material Squadron.
Joseph S. Stiborik served as a sergeant in the 393rd Bombardment Squadron, a part of the 509th Composite Group.
Arthur Julius Olofson joined the Manhattan Project at Los Alamos in June 1944. Olofson developed specialized tools for components of the atomic bomb under Dr.