Three Mile Island accident (US – 1979) falls under scale 5 nuclear power plant accidents. On March 28, 1979, in the wee hours of morning, the Three Mile Island nuclear generating station witnessed a nuclear meltdown of one secondary loop. This nuclear accident released 13 million curies of radioactive gases into the atmosphere and caused a loss of USD 2,400. 10 court cases were also filed on various authorities, concerning this accident, and they took 15 long years to get settled. Fortunately it led to no deaths or injuries.