Thin Man (nuclear bomb) and the name came from the Dashiell Hammett detective novel "The Thin Man" and series of movies by the same name. The "Fat Man" bomb would be round and fat and was named after Sydney Greenstreet's character in "The Maltese Falcon". "Little Boy" would come last and be named only to contrast to the "Thin Man" bomb. Oppenheimer assembled a team at the Los Alamos Laboratory to work on plutonium gun design that included senior engineer Edwin McMillan and senior physicists Charles Critchfield and Joseph Hirschfelder. Critchfield had been working with sabots, which Oppenheimer believed would be required by the
The Thin Man kind of work; he was sick for many of those years and getting sicker. But he kept his work, and his plans for work, in angry privacy and even I would not have been answered if I had ever asked, and maybe because I never asked is why I was with him until the last day of his life. Following the success of the movie version of "The Thin Man" in 1934, Hammett was commissioned to work on screenplays for sequels. During the course of this work, he wrote "After the Thin Man" and "Another Thin Man", which, discovered amongst