Small-scale miners add mercury to pans of gold-rich ore, where the element clings to the gold and sinks to the bottom. Studies show that up to 15 million miners around the world are exposed to dangerous levels of mercury in this way, along with others in the industry like jungle shopkeepers and jewelers.
It is also a major environmental hazard, travelling thousands of miles in the atmosphere and poisoning local water sources.
This year, recorded sales of gold will bring in more than 600 million dollars to the Guyanese economy, about six times more than sugar. Officials say about half of the estimated national annual production of about 650,000 troy ounces is smuggled to countries like neighbouring Suriname and Brazil where royalties and taxes are cheaper.
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