FILE - In this March 30, 1979, file photo a cooling tower of the Three Mile Island nuclear power plant near Harrisburg, Pa., looms behind an abandoned playground. The nuclear crisis in Japan has transported residents of Central Pennsylvania back 32 years, when the partial meltdown of the Three Mile Island nuclear plant raised fears that a massive amount of radiation could be released into the atmosphere or the Susquehanna River. But there are stark differences between the two disasters. (AP Photo/Barry Thumma, File)