Ted Petry was recruited for the Manhattan Project after graduating from high school. He worked as a lab assistant at the Chicago Met Lab and witnessed the Chicago Pile-1 going critical for the first time. In this interview, Petry discusses his experience working at the Met Lab, and working under Enrico Fermi. He explains how the crew planed graphite blocks, and worked on the Chicago Pile operations. He reflects back on the twentieth anniversary celebrations of the Chicago Pile-1 and meeting President John F. Kennedy at the White House at the time.