National Museum of Nuclear Science & History
Butler worked at Los Alamos during the Manhattan Project.
Johnston worked at the 200 West Area at Hanford during the Manhattan Project.
S. W. Pratt worked for Clinton Laboratories at the X-10 Reactor.
J. Robert Oppenheimer (1904-1967) was an American theoretical physicist. During the Manhattan Project, Oppenheimer was director of the Los Alamos Laboratory and responsible for the research and design of an atomic bomb.
