Three Mile Island nuclear power plant's shutdown is imminent

The final shutdown of Three Mile Island, where 1979's terrifying partial meltdown became a landmark event in the life cycle of nuclear power in the United States, is imminent.Exelon Corp. officials said the plant will stop producing electricity around noon Friday, following through on a decision the Chicago-based energy giant made in May after it became clear that it would not get a financial rescue from Pennsylvania.The accident that destroyed Three Mile Island's Unit 2 badly undermined public