The recovery mechanisms and parameters are introduced. Mass fraction of indium, copper and silver in obtained metals is over 99.99%.

介绍了铟、铜、银分别回收的原理及技术参数，所得金属中铟、铜、银质量分数均大于99.99%。

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The pretreatment of silver concentrate with high arsenic, antimony and copper is followed by in-pulp electrolysis, the leaching rate of silver is over 95%.

富含砷、锑、铜的银精矿先经过预处理，再进行矿浆电解，银的浸出率达到95%以上。

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The proved minerals are over 50 kinds like gold, silver, copper, iron, marble, granite, lime stone, and pyrite.

已探明的有金、银、铜、铁、大理石、花岗岩、石灰石、硫铁矿等50多种。

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The silver panic spilled over into gold and copper as well, though to a much smaller degree.

WSJ: Common Sense: Is the Commodities Bull Market Over?

The prices of gold, silver and copper have been on a tear over the past few years.

FORBES: Latin Mining Via Toronto

Mongolia makes mining geologists salivate over its known riches and unexplored potential for copper, coal, gold, silver, uranium, molybdenum, and on and on.

ECONOMIST: Booming Mongolia