Three Mile Island: Near-Miss Nuclear Disaster

Staff at the Three Mile Island nuclear facility in hazmat gear.

Alarms rang in the control room at Three Mile Island Nuclear Generating Station at 4 a.m. on March 28,1979. The cascade of events and broader panic made the nuclear plant the site of the most serious and publicized incident in the history of American commercial nuclear power. What happened on Three Mile Island? How was the incident handled and what effects did it have on nuclear power in the United States?

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