National Museum of Nuclear Science & History
Donald “Don” Hornig (1920-2013) was an American chemist. Hornig was recruited to join the laboratory at Los Alamos in 1944, just one year after receiving his doctorate in physcial chemistry from Harvard University.
D. M. Ellett is a mechanical engineer who joined the Manhattan Project after the end of World War II.
Robert S. Mulliken (1896-1986) was an American physical chemist and winner of the 1966 Nobel Prize in Chemistry.