National Museum of Nuclear Science & History
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.
H. F. Delo worked for the Edenfield Electric Company.
Paul W. Levy was an American physicist. After receiving his undergraduate degree from the University of Chicago in 1943, Levy joined the Manhattan Project at the University’s Metallurgical Laboratory.