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jun 01, 2012 An obvious drawback of this method is the toxicity of mercury.2,3 the health risk of mercury is well known today in many parts of the world, but in remote small-scale mining communities that knowledge is still scarce.4 gold extraction by amalgamation releases large amounts of mercury into the environment as metal mercury, which is later transformed to metholated mercury, a small scale gold ore crushers In tanzania. botswana small scale gold ore crushers in tanzania botswana gold ore small crusher small scale mining posted on march 2016 category get price and support online small gold panning stone crusher equipment canada crusher for tanzania plant south africa smallscale gold processing
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