National Museum of Nuclear Science & History
Mollie Sprio was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Frank R. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
D. W. Cardwell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
deColongne worked at the 300 Area at Hanford during the Manhattan Project.