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DAWU, Hubei -- About 20,000 residents in central 皇冠体育app 's Hubei Province were evacuated after an ammonia leak at a nitrogenous fertilizer factory on Wednesday that has left one dead and six injured.

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The leak occurred around 7:50 a.m. in a nitrogen fertilizer factory in Dawu County when an ammonia pipe broke, said Chen Yixin, assistant general manager of the Huangmailing Phosphorus Chemical Industry Group Company, which owns the factory.

The leak was stopped at 8:40 a.m. after workers closed the valve of the pipe.