National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
G. P. Happ worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Joseph Hans worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
William E. Smith served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Straight Flush.
