National Museum of Nuclear Science & History
H. L. Shaefer worked for the Edenfield Electric Company.
Leon Horton served in the 393rd Bombardment Squadron.
Critselous worked Stone and Webster Engineering Corporation.
George Mallinckrodt was a physicist at the Manhattan Project’s Los Alamos, NM facility. He also worked at Argonne National Laboratory, the successor of the University of Chicago’s Metallurgical Laboratory (“Met Lab”).