National Museum of Nuclear Science & History
Neil Bergen was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Marion Mandel was a laboratory technician in the Health Division at the University of Chicago Met Lab.
Ruth H. Anderson was a staff member at Los Alamos during the Manhattan Project. Her husband, Ralph Larsen, worked at Los Alamos as a machinist.
C. L. Fields worked for the Tennessee Eastman Corporation at the Y-12 Plant.