After World War II, Slotin expressed growing disdain for his personal involvement in the project. He remarked, "I have become involved in the Navy tests, much to my disgust." Unfortunately for Slotin, his participation at Los Alamos was still required because, as he said, "I am one of the few people left here who are experienced bomb putter-togetherers." He looked forward to resuming teaching and research into biophysics and radiobiology at the University of Chicago. He began training a replacement, Alvin C. Graves, to take over his role at Los Alamos.