National Museum of Nuclear Science & History
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”).
Edward J. Gmach served in the 1st Ordnance Squadron.
Livingston worked in the 100 F Area at Hanford during the Manhattan Project.
Charles Pigott worked for the Tennessee Eastman Corporation at the Y-12 Plant.