National Museum of Nuclear Science & History
R. F. Ridgeway worked for the Roane-Anderson Company.
Calkins worked at the 200 West Area at Hanford during the Manhattan Project.
William J. Collinson served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the navigator regularly assigned to the B-29 Some Punkins.
J. W. Stein worked for the Union Carbide & Carbon Corporation.
Halm worked at the 300 Area at Hanford during the Manhattan Project.
