National Museum of Nuclear Science & History
S. J. Helfman worked for the J.A. Jones Construction Company.
Horace Cunningham worked for the Roane-Anderson Company.
McCloud worked as a secretary at the Y-12 plant at Oak Ridge during the Manhattan Project.
Henry L. Smith served in the 393rd Bombardment Squadron.
George Briggs was only 20 years old when he began working with the Special Engineer Detachment at Los Alamos.
