National Museum of Nuclear Science & History
T. F. McVeigh worked for the J.A. Jones Construction Company.
D. G. Perkins worked for the United States Engineer District Office.
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.
