National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
Charles Swartout worked for the United States Engineer District Office.
Frank R. Harty served in the 393rd Bombardment Squadron.
Mary Fair worked as a lab assistant at the Metallurgical Lab at the University of Chicago. She was not sure of the purpose of her work, but often used radiation detecting devices in the experiments.
