National Museum of Nuclear Science & History
W. D. Carol worked for the Roane-Anderson Company.
C. L. Klein worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Paul D. Krause was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
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”).