Joseph L. Connaughton

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”).

Crawford Hayes

Hayes worked at the 300 Area at Hanford during the Manhattan Project.

E. H. Grey

E. H. Grey worked for the Tennessee Eastman Corporation at the Y-12 Plant.

F. C. Gregson