National Museum of Nuclear Science & History
Eugene Glenn worked for the Edenfield Electric Company.
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.
N. F. Hanke worked for Clinton Laboratories at the X-10 Reactor.
G. L. Ryan worked for the United States Engineer District Office.