Apr 14, 2012· what is the global formula for pricing copper concentrate contain gold and silver?
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The copper production process focuses on removing increasing amounts of unwanted materials, turning sulphide ore into finished metals
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Jan 29, 2017· "Incoming shipments of copper concentrate from South America took another big jump during the past year" , Follow Business Insider: Reuters The .
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May 15, 2003· Antitrust authorities in the United States, Europe and Canada are investigating whether several large copper companies colluded to fix prices, regulators .
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Aug 02, 2009· There's a pricing formula for concentrate trading (zinc, copper etc) Where did come from? Why someone got to use it? Any books? Resourc???
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Mar 22, 2017· One of the world's largest copper mines is back online Dave Forest , print; Follow Business , shut down Grasberg copper concentrate output on .