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The Machinery Used In Gold Mining Creates Air Pollution

2020-8-10For example 99 tons of waste are generated per ton of copper with even higher ratios in gold mining because only 5.3 g of gold is extracted per ton of ore a ton of gold produces 200000 tons of tailings. As time goes on and richer deposits are exhausted and technology improves to permit this number is going down to .5 g and less.

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