Copper and gold are both metals.

铜和金都是金属。

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Shares of the copper and gold miner fell from $57.73 on June 4, 2008, to $12.18 by that Nov. 26.

铜和黄金矿业公司股价下跌，从五十七点七三美元年6月4 2008年，由该12.18美元11月26日。

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Thiol-SAMMS can also recover precious metals such as copper and gold, and researchers are now switching out the sulfur for other atoms so that it could mop up radioactive waste.

Thiol-SAMMS也能还原像铜和金这样的贵重金属。 研究人员现在正试图用其他原子代替硫，如此一来这种粉末就能去除放射性废弃物了。

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Leadville had gold, silver and copper mines.

VOA: special.2010.03.08

The bronze medals are largely copper because burnished bronze and gold are similar in color, and the mint did not want any confusion as to which medal an athlete receives.

VOA: standard.2010.02.16

Freeport's Grasberg mine has one of the biggest copper and gold reserves in the world.

BBC: Freeport's Grasberg copper mine

Freeport will keep investing in brownfield copper and gold assets to lower its cost base.

FORBES: Freeport Banks Future On Better Copper Production And Energy Exploration

Rio got not a penny of participation in the copper and gold activities already developed by FCX.

FORBES: McMoRan DeRisks the Ultra Deep As It Nears a Financial Bonanza