Princeton University was essential to the success of the Manhattan Project (1942-1946). Among the core group of scientists doing research on the atomic bomb at Los Alamos National Laboratory, the Hanford site, Clinton Engineering Works (Oak Ridge), and the Metallurgical lab at the University of Chicago, more than two dozen of these scientists were faculty members at Princeton University. In addition, the research and knowledge coming out of Princeton was critical to the creation of the atomic bomb.