NOTE Contamination introduced during rock sample…
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A ball mill is a type of grinder used to grind and blend materials for use in mineral dressingA rock tumbler functions on the same principle. Ball mills are also
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Using a small ball mill to investigate gold liberation ..g/tonne (i.e..grams of gold in one tonne of rock). A gold deposit becomes interestinggold miners in Serra Pelada, Brazil in thes. Actually the Canaã
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