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.
John Wilkes worked for the Roane-Anderson Company.
Gibson worked at the 300 Area at Hanford during the Manhattan Project.
Barger worked in the United States Engineer District Office.
