Nuclear Museum Logo
Nuclear Museum Logo

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.

Related Profiles

John Orhadzian

Los Alamos, NM

Bernard Ticich

Los Alamos, NM

Arthur L. Allen

K-25 Plant

Attended the South Dakota School of Mines and Technology. 

Joseph LaRocco

Chicago, IL

Joseph LaRocco was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.