National Museum of Nuclear Science & History
Philip Morrison (1915-2005) was an American physicist. Morrison studied under J. Robert Oppenheimer at the University of California, Berkeley, and received his Ph.
Gus Essig began working on the Manhattan Project in May, 1946 in Dayton, Ohio. Essig was selected to work in the highly classified initiator program and spent several months at Los Alamos learning how to design and construct initiators.
R. E. Hoffman worked for the Tennessee Eastman Corporation at the Y-12 Plant.