Does South Africa Process Raw Copper

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  • how is platinum mined history techniques and photos

    a recently opened underground section uses deeper level extraction methods. in stillwater, montana, pgm is extracted from the j m reef. 80% of their platinum and palladium rich ore is mined using a mechanized ramp and fill method, much like the lhd method in south africa.

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    raw materials this composition was changed to a copper plated zinc. a zinc alloy with traces of copper constitute the core of the coin, while the outer surface is

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