National Museum of Nuclear Science & History
J. R. Smith worked for the Roane-Anderson Company.
Dick Kosh was an American physicist. He worked at the Los Alamos site during the war, arriving from the University of Wisconsin, Madison, and then stayed afterwards.
Brown worked in the United States Engineer District Office.
Hugh T. Richards was an American physicist. He worked on neutron measurements for the atomic bombs at Los Alamos during the Manhattan Project.