Interviewer: December 2, 1962 marks the twentieth anniversary of the first nuclear chain reaction achieved at the University of Chicago. That day a group of scientists, led by the late Dr. Enrico Fermi, operated man’s first atomic reactor. The occasion ushered in the atomic age. Present at that historic moment was Dr. Norman Hilberry former director of Argonne National Laboratory near Chicago. This is how he explains his part in that day.