The Three Mile Island Accident occurred on March 28, 1979, at the Three Mile Island Nuclear Generating Station in Pennsylvania, USA. It was a partial meltdown of a reactor, caused by a combination of mechanical failures and operator errors. The incident led to the release of a small amount of radioactive gases, but no immediate injuries or deaths were reported. The accident raised public concern about the safety of nuclear power and prompted changes in regulations and safety protocols within the nuclear energy industry. It highlighted the importance of effective communication and training for operators to prevent similar incidents in the future.