Arthur Compton
In early 1942, Arthur Compton concentrated the Manhattan Project's various teams working on plutonium at the University of Chicago. This brought in many top scientists including Herbert Anderson, Bernard Feld, Enrico Fermi, Leó Szilárd and Walter Zinn from Columbia, and Edward Creutz, Gilbert Plass, Eugene Wigner and John Wheeler from Princeton University. Weinberg became a protégé of Wigner.