National Museum of Nuclear Science & History
W. E. Young worked for the J.A. Jones Construction Company.
Frederick Rich worked for the Union Carbide & Carbon 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”).
Russin worked at the 200 East Area at Hanford during the Manhattan Project.