National Museum of Nuclear Science & History
D. R. Johnson worked for the Roane-Anderson Company.
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.
Haydn Jones was a research assistant in the Physics Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.