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National Museum of Nuclear Science & History

Ray Smith is the historian at the Y-12 National Security Complex. His specific focus is the history of Oak Ridge, and he is intimately acquainted with the uranium enrichment processes undertaken at the Y-12, K-25, and S-50 plants during the Manhattan Project, and how the Fat Man and Little Boy bombs worked.

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Irvin Brogman

K-25 Plant

Attended New York University.

John Ruminer

Los Alamos, NM

Dr. John Ruminer is a retired engineer, local historian, and a member of the Board of Directors at the Los Alamos Historical Society.

G. E. Pierce

Oak Ridge, TN

Mary S. Clark

Oak Ridge, TN

Clark worked in the United States Engineer District Office.