Three Mile Island
The most serious nuclear accident in United States history occurred at Three Mile Island in Pennsylvania on March 28, 1979. About 140,000 people were forced to evacuate their homes after a combination of equipment malfunctions, problems with the design of the reactor, and human error led to a partial meltdown of the TMI 2 reactor core.
Although the partial meltdown resulted in some contamination within the plant, nobody died or got injured. However, the accident stirred public protest and subsequently led the US Nuclear Regulatory Commission to tighten its regulatory oversight over the industry. It also contributed to a freeze in the construction of new nuclear plants in the US over the next three decades.
August 21, 2013 12:39 PM PDT
Photo by: Getty Images
| Caption by: Charles Cooper
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