National Museum of Nuclear Science & History
C. M. Hart worked for the Harrison Construction Company.
Ruth Hillard was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert Parks worked for the United States Engineer District Office.
George W. Crisp served in the 393rd Bombardment Squadron.
Richard Ungemach served in the army at Los Alamos during the Manhattan Project.
