National Museum of Nuclear Science & History
Eleanor Caldwell was a laboratory technician in the Health Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ralph Nobles was one of three brothers to work on the Manhattan Project. He and his brother William worked at Los Alamos, while brother Robert was at the University of Chicago’s Metallurgical Laboratory.
Mason worked in the 300 Area at Hanford during the Manhattan Project.
Mary Littleton worked for the J.A. Jones Construction Company.
