National Museum of Nuclear Science & History
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.
Alvina Petrus was a stenographer and clerical worker at the Chicago Met Lab.
Anthony D. Capua, Jr. served as a sergeant in the 393rd Bombardment Squadron. He was regularly assigned as an assistant engineer/scanner in the Up An’ Atom, but did not fly in that plane in the August 1945 bombing missions on Hiroshima and Nagasaki.
A. J. D’Arcy worked for the Union Carbide & Carbon Corporation.
