National Museum of Nuclear Science & History
W. S. Nivison worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.