National Museum of Nuclear Science & History
Ruth Hillard was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ray Williams was a member of the 1st Ordnance Squadron in the 509th Composite Group in Wendover, Utah and on Tinian Island in the Pacific in 1945.
B. K. Coghlan, Jr. worked for the Kellex Corporation at the K-25 Plant.
H. Courtney worked for the Rock City Construction Company.