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National Museum of Nuclear Science & History

John H. Smith

GuardChicago, IL

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

John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

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Frederick W. Harjes

K-25 Plant

Attended Colgate College.

Everette Risley

Los Alamos, NM

Millard F. Sloan

Oak Ridge, TN

Millard Sloan was a chemical operator at the Y-12 Plant in Oak Ridge, Tennessee from 19445 to 1947. Sloan was a Tennessee native who served in India with the 12th Air Cargo Re-supply Squadron of the US Army before working at Oak Ridge.

Robert L. Griffith

Y-12 Plant

Robert Griffith worked for the Tennessee Eastman Corporation at the Y-12 Plant.