Obviously, I'm not looking in the core of the reactor, but I am looking at what, at that time, was considered the source of the trouble, which was the water and where it was. ↗
Apollo 13, as you may remember, gave us a reactor that is bubbling away right now somewhere in the Pacific. It's supposed to be bubbling away on the moon, but it's in the Pacific Ocean instead. ↗
Penn State in 1955 became the first university to be issued a federal license to operate a nuclear reactor, which it continues to use for studies in the peaceful uses of atomic energy and the training of nuclear industry personnel. ↗