National Museum of Nuclear Science & History
Arthur L. Hughes was an British/Welsh physicist. He worked on the Manhattan Project in St. Louis on the cyclotron and plutonium production and at Los Alamos, NM.
Harper worked for Stone and Webster Engineering Corporation.
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.
H. L. Reimer worked for the Tennessee Eastman Corporation at the Y-12 Plant.