They will mine copper there in the valley.

他们将在那边的山谷开采铜矿。

youdao

The machines are building themselves, doing their own mining to get the materials to make the machines which mine the copper which goes to the factory of machines which makes the telephone.

FORBES: Race Against the Machine

In 2010, 33 miners were trapped in a copper mine in the same region.

BBC: Chile slow search for miner trapped 100m underground

Like gold, oil and other commodities, copper mine supply growth has made little headway recently.

FORBES: Supply Pinch Could Prop Up Price Of Copper