National Museum of Nuclear Science & History
Leonard worked in the 300 Area at Hanford during the Manhattan Project.
J. W. Stein worked for the Union Carbide & Carbon Corporation.
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.
