About a fifth of the world’s gold produced every year comes from small-scale mines where millions of people work in hazardous conditions without access to modern technology. They resort to extracting and crushing ore by hand before using water and then highly toxic mercury or cyanide to separate the gold. The ad hoc process is not only harmful for the individuals involved, some of whom are children, but pollutes their local environment. It is also highly inefficient, on average extracting only 40% of the available gold.
read more... https://www.theguardian.com/business/2017/oct/01/comic-relief-and-fairtrade-back-ethical-gold-mining-in-east-africa
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