National Museum of Nuclear Science & History
William Gray worked for the Roane-Anderson Company.
Roy Bonsib was a research associte at the Metallurgical Laboratory in Chicago 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”).
Kelly worked in the 200 West Area at Hanford during the Manhattan Project.
