It will be a short time for Nanfen open-pit iron mine to mine in the third stage. The mine should be engaged on deep part mining design at once.

南芬铁矿目前正在进行的三期境界开采的服务年限已经不长了，矿山需要马上着手进行下期深部开采设计。

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With more and more open-pit mines transferring into deep open-pit mining, research on the law of the movement and damage to high and steep slope rock is focused on.

随着越来越多的露天矿山转入深凹露天开采，高陡边坡岩体运动损害规律研究越来越受到人们所认识和重视。

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De Beers is active in every category of industrial diamond mining: open-pit, underground, large-scale alluvial, coastal and deep sea.

FORBES: Anglo American Receives Final Regulatory Approval for De Beers Acquisition