Previously, the commission held that the amount of radiation released from FDI warranted only a level 5 designation on the International Nuclear Event Scale (which runs from 1 to 7).

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The legislation also expressly provided for a resumption of U.S. nuclear testing in the event that other nuclear powers conducted tests.

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That is why, says Yasunari Fujimoto of Gensuikin, an anti-nuclear group that planned the event, the demonstrators' demand is not to do away with nuclear power immediately, even though his organisation favours that.

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