露天开采的矿山作业已于1962年停止。

Mining operations by open-cut methods ceased in 1962.

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它适用于各种露天开采的矿山和大型采掘运输联合作业的工程。

It is suitable for the engineering of various open - pit mines and large excavating - hauling combined operation.

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研究露天开采边坡的安全稳定对露天矿山的安全生产具有重要意义。

Research on the safety and stability of slope in open-pit mining is very significant to safety production of open mines.

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