National Museum of Nuclear Science & History
H. O. Arnold worked for the Kellex Corporation at the K-25 Plant.
R. D. Murray worked for the Tennessee Eastman Corporation at the Y-12 Plant.
George Maronde was a security guard at the University of Chicago Metallurgical Lab. He stood guard outside Stagg Field when Chicago Pile-1 went critical on December 2, 1942.
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.
