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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This has extremely vital significance for production of open-pit mine and maintenance safety of operating personnel and the equipment.

这对指导露天矿的生产和维护作业人员及设备的安全具有十分重要的意义。

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Adding the regularity measure as an additional objective function to a general open pit mine short term production scheduling model, this paper formulates a new model with practicality objective.

将该规整性测度作为目标函数添加到一般的露天矿短期生产调度模型中，建立了具有现实性目标的露天矿短期调度模型。

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

FORBES: The Guilt-Free Consumer

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

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Toronto's Northland Power wants to convert an old open-pit iron ore mine in Ontario into a waterfall five times the height of Niagara Falls, which could be used to generate power.

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