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National Museum of Nuclear Science & History

Donald A. Caldwell

SupervisorK-25 Plant

Oak Ridge, TN
EngineerManhattan Project VeteranMilitary VeteranSpecial Engineer Detachment
Oak Ridge, K-25

Attended the California Institute of Technology.

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Attended the City College of New York.

H.A. Fettinger

Chicago, IL

H.A. Fettinger was a junior physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.