National Museum of Nuclear Science & History
Duane Sewell began working with the Manhattan Project in 1941. He was one of the first people to arrive at Oak Ridge and experienced first-hand some of the difficulties there with cyclotrons and isotope separation.
Gilbert N. Lewis (1875-1946) was an American physical chemist. His work with heavy water and resources were adapted by Ernest Lawrence in the development of the cyclotron.
L. L. Brown worked for the Roane-Anderson Company.