TOKYO — Japan’s nuclear safety agency said on Wednesday that new tests of seawater near a crippled nuclear plant revealed sharply increased levels of radioactive iodine. Hidehiko Nishiyama, deputy director general of the Nuclear and Industrial Safety Agency, said that seawater tested near the Fukushima Daiichi Nuclear Power Station was found to contain iodine 131 at 3,355 times the safety standard …
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