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发帖数: 1 | 1 根本不用担心死了人
反正没有人管
In 2011, 21 coal miners were killed in accidents. 2012 saw 19 coal miners
killed in accidents. The safety gains in metal and nonmetal mining have also
been impressive. In the 1930s, an average of 233 miners died per year in
the non-coal mining sector, compared to an average of 24 fatalities per year
from 2006-2010.
这个是统计上来的数据 |
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