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.
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
Allred worked as a chemical operator at the Y-12 plant at Oak Ridge during the Manhattan Project. While at Oak Ridge, she was nominated as a contestant in the “Miss Atomic Bomb” beauty pageant.
