National Museum of Nuclear Science & History
Frank Vaughan was a research associate at the Chicago Met Lab during the Manhattan Project.
Robert A. Berardo served in the 509th Headquarters and Base Services Squadron.
Chester J. Krajewski served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Top Secret.
Cash worked as an operator at the Y-12 plant at Oak Ridge during the Manhattan Project.