None are safe. My husband worked on one of the three back then in Taiwan, I think, after his death they added a fourth. They get some pretty fierce typhoons & earthquakes. He worked on Unit 1 & 2 in Shippingport and he had to quit because the rads he was getting was comparable to those my mom got getting rads for health reasons. I would shut off the lights to see who glowed more. I still wouldn't live near Three Mile Island for no money in this world. Depending on how the wind blows I would reckon, everyone is going to glow alittle from Japan's meltdown. And, it is going to be around a long, long time; and, cause alot of stomach problems.