1st collector for BBC News - Tsunami floodgate 'did not work'
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The number of people confirmed dead in the earthquake and tsunami in north-east Japan now stands at nearly 8,500 but officials fear more than 15,000 have been killed in just one area. The small coastal town of Rikuzentakata was badly hit - the tsunami flattened everything in its path. From there, Damian Grammaticas reports.
