Upstream is the poisonous Berkeley pit, an open-pit mine in Butte, which was once called the Richest Hill on Earth for the quantities of gold, silver and copper mined there.

上游是有毒的伯克利矿坑，一个比尤特的露天矿。它曾经被称为地球上最富有的矿山，因为这里的金、银和铜矿数量巨大。

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A method of calculating ore quantity in practical open pit mine is given.

提出了一种可用于实际露天矿的矿量计算方法。

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The crusher is the key technology for semi-continued overburden stripping operation in open pit mine.

实现露天矿表土剥离采用半连续工艺的关键技术是破碎机。

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Many hope they will get jobs at the new gold mine. Saidu Kamara supports his family by working in one of the small pit mines inside the Baomahun site.

VOA: standard.2010.04.22

Buy it and you make some open-pit mine in Arizona a little deeper.

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Besides its open pit mine located in Northern Quebec, there is a growing lithium battery industry growing in Montreal.

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The open-pit mine, which was once owned by Anaconda, has sat abandoned since 1978 after Anaconda sold the property.

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