美国也曾经是个矿难频发的国家,但是每一次大的矿难,都转化成了改进相关制度的机会,致使矿难发生率、死亡人数不断下降,从20世纪初年均2000多人死亡到50年代年均500多人死亡,再到90年代年均93人死亡。到现在,煤炭开采行业已经成为安全行业,劳动安全性甚至好于农业、建筑业和零售业。 The United States was once a country with frequent mining accidents. However, every major mine disaster turned into an opportunity to improve the system. As a result, the incidence of mines and the death toll have been declining. From the death of more than 2000 people in the early 20th century to the 1950s With an average annual death toll of more than 500, the average annual death toll was 93 in the 1990s. Until now, the coal mining industry has become a safety industry, and labor safety is even better than agriculture, construction and retail.