Read MoreOne survivor taken to hospital after excessively high levels of carbon monoxide kill workers at Chongqing mine.One survivor taken to hospital after excessively high levels of carbon monoxide kill workers at Chongqing mine.
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Read MoreOne survivor taken to hospital after excessively high levels of carbon monoxide kill workers at Chongqing mine.One survivor taken to hospital after excessively high levels of carbon monoxide kill workers at Chongqing mine.