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National Museum of Nuclear Science & History

Ralph E. George

Instrument EngineerK-25 Plant

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

Attended Northeastern University.

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Chester L. Ura

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Attended Wayne University.

Frank M. Graham

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Fred A. Hoey

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Fred A. Hoey served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the navigator of the B-29 Full House, which served as a weather reconnaissance plane on the Hiroshima bombing mission, and the backup strike plane on Iwo Jima on the Nagasaki mission.

Howard R. Kratz

Chicago, IL

Howard R. Kratz (1916-2013) was a nuclear physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.