National Museum of Nuclear Science & History
Greenhalgh worked in the United States Engineer District Office.
Newell E. Dahl served in the 603rd Air Engineering Squadron.
Hart worked at the 300 Area at Hanford during the Manhattan Project.
Oscar J. Thigpen 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.
