National Museum of Nuclear Science & History
DeRenzis worked in the United States Engineer District Office.
O’Black worked in the 200 East Area at Hanford during the Manhattan Project.
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.
R. C. O'Dell worked for the Tennessee Eastman Corporation at the Y-12 Plant.