How Will The Current Copper Supply Impact The Markets?
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Why is copper used in making electrical wires?
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Resistivity: Is Copper the Best Metal Conductor?
http://forum.trapeza.ru/viewtopic.php?f=17&t=321135&p=810080#p810080
Mineral Sources of Copper World Map
http://www.66682999.com/viewthread.php?tid=356067&page=1&authorid=371362
For Some Copper Deposits, Microbes Make Minable Minerals
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Copper demand and production trends
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