| The 28th of March, 2009, marked the 30th anniversary of the accident at Three Mile Island (TMI) nuclear power plant in Harrisburg, Pennsylvania. The 1979 accident at TMI-2 was the most serious in US commercial nuclear power plant operating history, even though it led to no deaths or injuries to plant workers or members of the nearby community. However, it brought about sweeping changes involving emergency response planning, reactor operator training, human factors engineering, radiation protection, and many other areas of nuclear power plant operations not only in the US but worldwide.
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