Unlike alluvial gold, which is found as very small flakes on riverbanks, gold-bearing rocks have to be dug out of the ground. We're after pure gold, but rock that contains gold also includes lots of ...
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There’s Gold Trapped in Your iPhone – And Chemists Have Found a Safe New Way to Extract It
In 2022, humans produced an estimated 62 million tonnes of electronic waste – enough to fill more than 1.5 million garbage trucks. This was up 82% from 2010 and is expected to rise to 82 million ...
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