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National Museum of Nuclear Science & History

Roy Schroeder

Laboratory AssistantChicago, IL

Manhattan Project VeteranProject Worker/Staff
Sketch of Chicago Pile-1 by Melvin A. Miller

Roy Schroeder was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.

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Jim E. Carter

Hanford, WA

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Los Alamos, NM

Richard Tolman

Washington, DC

Richard Tolman (1881-1948) was an American physicist and chemist. Starting in 1940, Tolman served as Vice-Chairman of the National Defense Research Committee (NDRC) and was also the Chairman of the Armor and Ordnance Division of the NDRC.

Cy G. Holmes

Research & Development/300 Area

Holmes worked at the 300 Area at Hanford during the Manhattan Project.