National Museum of Nuclear Science & History
James Franck (1882-1964) was a German physicist and winner of the 1925 Nobel Prize for Physics. During the Manhattan Project, Franck served as Director of the Chemistry Division of the University of Chicago’s Metallurgical Laboratory.
Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.
