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Mongolia’s ancient silver mines highly polluting: study

Cecilia Jamasmie | March 04, 2015 | 5:00 am Base Metals Precious Metals Asia China Europe Copper Gold Iron Ore Silver 

[caption id="attachment_819386" align="aligncenter" width="600"] Mausoleum of Genghis Khan in Ordos.[/caption] A team of American and Chinese scientists has revealed that pollution from heavy metals like lead, zinc and cadmium spiked between 1271AD and 1368AD in the Yunnan region, affecting several...

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