The ball mills are used to crush ore extracted from the mines. After a few hours, water and mercury are added. Flecks of gold from the crushed ore bind to the liquid metal. The amalgam is then torched, which burns off the mercury and leaves behind a lump of gold. It's a popular technique, simple and cheap. But it can have devastating consequences.
read more... http://www.smh.com.au/world/the-real-price-of-gold-in-lombok-indonesian-women-with-toxic-mercury-levels-20171005-gyuy5q.html
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