National Museum of Nuclear Science & History
Hayes worked in the United States Engineer District Office
Gonzalo Williams was a staff worker at Los Alamos during the Manhattan Project.
Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Stanley C. Apgar served in the 393rd Bombardment Squadron.
N. Levenson worked for the Tennessee Eastman Corporation at the Y-12 Plant.