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patented mine with proven gold reserves of 673,871 ounces also containing silver and copper. the mine includes 3 contiguous lode claims totaling 131 a …
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mar 26, 2014 . bhp billiton operates the world's biggest copper mine escondida in chile. . in london earned gross sales revenue of $54.6bn in the year ending in . base metals including nickel, copper, gold and platinum group . the british multinational mining company anglo american headquartered in london, uk, .
apr 3, 2015 . this is a reversal of trend that began in the 1960s when copper ores . in contrast, the contributions of silver supply from lead/zinc-, copper-, gold-, and silver-dominant ores have . 2008 reported or estimated metal sales by platinum group . johnson matthey, platinum johnson matthey, plc., royston, uk, .
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