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  2. Germany Only Copper Ore Flotation Machine Coal N Sell At A Loss

germany only copper ore flotation machine coal n sell at a loss

For example El Soldado copper mine Chile had an average oxide ore grade in 2003 of 17 and in 2012 the average ore grade was only 046 As an average the combined weighted decrease of the copper ore grade in all the mines analyzed was approximately 25 from 2003 to 2013

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