George T. Elum

F. A. Davis

F. A. Davis worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Clarence G. Frank

Frank Smith

Frank Smith worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.

George Mallinckrodt

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”).