Radiation Levels Are Soaring Inside the Damaged Fukushima Nuclear Plant

Full disclosure, I'm a proponent of nuclear power. But 530 Sv/hr seems a bit... obscene. Spent fuel, when completely unshielded, can easily be over 100 Sv/hr. Recently irradiated fuel can be over 1500 Sv/hr. That's why you need 7 feet of water to shield it.

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