National Museum of Nuclear Science & History
H. A. Smith worked for the J.A. Jones Construction Company.
H. D. Collins worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. B. Hembree worked for the Roane-Anderson Company.
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”).