National Museum of Nuclear Science & History
H. E. Donachy worked for the Edenfield Electric Company.
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.
McMahon worked in the 100 D Area at Hanford during the Manhattan Project.
V. N. Hacker worked for the J.A. Jones Construction Company.