National Museum of Nuclear Science & History
Manning worked for Stone and Webster Engineering Corporation.
Gavin Hadden was an American civil engineer who served as special assistant to General Leslie R. Groves during the Manhattan Project.
Billy B. Burns served in the 509th Headquarters and Base Services Squadron.
J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.
Underwood worked at the 200 West Area at Hanford during the Manhattan Project.
