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Rio, BHP very close to develop U.S. largest copper mine

Cecilia Jamasmie | December 04, 2014 | 11:30 am Base Metals Precious Metals Top Companies Australia Europe Copper Gold Silver 

[caption id="attachment_810104" align="aligncenter" width="600"] The Morenci mine, in Southeast Arizona, may soon lose its status as one of North America's largest producer of copper. (Image by Arizona Wonders)[/caption] Arizona’s lawmakers slipped Tuesday night a piece of legislation that would allow mining...

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