National Museum of Nuclear Science & History
Block worked in the United States Engineer District Office.
Helen J. Arson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
T. W. Hungerford, Jr. worked for Clinton Laboratories at the X-10 Reactor.
Eric Clarke worked for the Roane-Anderson Company.
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
