Source: wikibot/three-mile-island-accident
= Three Mile Island accident
{wiki=Three_Mile_Island_accident}
The Three Mile Island accident was a partial meltdown of a reactor at the Three Mile Island Nuclear Generating Station in Pennsylvania, USA, which occurred on March 28, 1979. It is considered one of the most serious accidents in U.S. commercial nuclear power plant history. The incident began with a failure in the non-nuclear secondary system, which resulted in a loss of coolant in the reactor.