Pool at Fukushima No.4 reactor 'serious concern'-agency
TOKYO, March 17 (Reuters) - Japan's nuclear safety agency said a pool for cooling spent nuclear fuel at the No.4 reactor of the stricken Fukushima Daiichi nuclear plant remains a serious concern.
Earlier in the day the agency said it could not confirm if there was water in the pool. (Reporting by Jon Herskovitz; Editing by Michael Watson)
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