Interesting Engineering on MSN
Chinese scientists recover 98% of gold from old phones in 20 minutes at low cost
Chinese scientists have developed a rapid e-waste mining method that extracts gold in under 20 minutes at around one-third of ...
According to the World Gold Council, about 195,300 tons (177,200 tonnes) of gold have been dug out of the ground in all of human history. Countless lives have been lost obtaining the rare metal, and ...
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