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

E. C. Wagner

Oak Ridge, TN

E. C. Wagner worked for the United States Engineer District Office.

A. S. Booth

Hanford, WA

J. W. Calderwood

T-Plant/200 Areas

Calderwood worked at the 200 East Area at Hanford during the Manhattan Project. 

Leon O. Jacobson

Chicago, IL

Leon O. Jacobson was Associate Director of the Health Division and Section Chief of H-I, Clinical Medicine and Medical Research, at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.