过去的几个月，大型矿业公司财富缩水幅度之大令人震惊，各矿业公司深受其苦。
BIG mining companies have suffered an astounding reversal of fortunes in the past few months.
如果你有机会去到矿井，那么你将会发现，各矿井都十分重视这个重要决定，并且很好的履行。
If you have a chance to the coal well, and you can see that the coal Wells are attach great importance to the important decision, and them are have a good performance.
为了实现煤矿安全生产，各矿必须建立稳定的矿井通风系统。
In order to realize safety production in coal mine, ventilation system must be set up.
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