America’s worst commercial nuclear accident occurred inside the Unit Two reactor at 
the Three Mile Island plant near Middletown, Pa. It was the most significant accident
in the history of Americas commercial nuclear power generating industry. A cooling system malfunction caused the release of a significant amount of radioactivity when 
a partial core meltdown occurred. No deaths or injuries to plant workers or members
of the community in the area were reported. 

 
  

The April 9, 1979 issue of Time magazine

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