National Museum of Nuclear Science & History
B. D. Manchester worked for the Roane-Anderson Company.
W. W. Hazlett worked for the Fercleve Corporation.
Benjamin Nelson served in the Army at Los Alamos during the Manhattan Project.
August “Gus” Knuth was a millwright and carpenter who helped construct Chicago Pile-1. He was present on December 2, 1942 when the pile went critical in the first self-sustaining chain reaction in history.