coal mining accident [矿业] [安全] 煤矿事故
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What caused America's worst mining accident in 25 years?
是什么导致了25年发生在美国得最严重的矿难？
With multi-function and reasonable assortment, this kit is specially designed for disasters such as mining accident.
功用完全、搭合作理，是一款特地针对矿难等灾难所设想的应急包。
Dozens were still trapped in the mine on Sunday evening in the deadliest coal-mining accident in the country in more than a year.
截至周日晚上，12名矿工依然被困井下。这时一年多以来死亡人数最多的矿难。
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