National Museum of Nuclear Science & History
B. L. Brown worked for the Fercleve Corporation.
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.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
Herbert Silverstone was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Andrew G. Demo served in the 393rd Bombardment Squadron.