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.
H. J. Ratjen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
