选用精、中矿和原、尾矿两个标准系列。

Two series of standard samples were prepared.

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然而他们中只有少数几个确实挖了矿。

But few of them had actually dug up any ore.

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从这些深矿中取得煤是很昂贵的。

The extraction of coal from these deep mines is expensive.

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未受教育的天才好比矿中之银。

Genius without education is like a silver in the mine.

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因此，今后找矿中，更应关注断裂构造的研究。

Therefore, the structure research should be paid more attention to in future ore prospecting.

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矿山 地质工作在找矿中可发挥积极作用。

The geologic work of mine can play an active role in the exploration.

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矿山 地质工作在找矿中可发挥积极作用。

The geologic work of mine can play an active role in the exploration.

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