National Museum of Nuclear Science & History
H. A. Rehnberg worked for the Kellex Corporation at the K-25 Plant.
Ralph Lapp was an American physicist. He was born in Buffalo, New York in 1917. He was completing his PhD at the University of Chicago when he stumbled upon Enrico Fermi’s team working under Stagg’s Field in December of 1942, and was hired on the spot to work on the development of the atomic bomb.
Bob Emigh was in the Navy and worked with Deak Parsons on telemetry for the bombs. He was assigned as the science officer for the planned third bomb.