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。
A primary programme of ventilation for the deep part of east mining district, which is instructive to the practice.
并对今后东部矿区深部采矿综合通风系统提出初步方案，有现实指导意义。
The issue carries echoes of debates over mining minerals, such as manganese, in the deep ocean, which formed part of the backdrop for the international Law of the Sea Treaty in 1982.
这个问题恰好呼应了关于在深海开采诸如锰等矿物的争论。上述争论是1982年制定“国际海洋公约法”部分背景因素。
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