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Artisanal and Small-Scale Gold Mining Without Mercury. ... recognizes the risks of using mercury in artisanal and small-scale gold mining, and calls upon nations to reduce, ... Gold concentrate is combined with a flux, such as borax or other materials of mixtures, in the crucible. The flux acts to decrease the melting temperature and viscosity ...

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Sep 29, 2018· A nice little museum that covers the town, surrounding desert and history of borax mining from the 20 mule teams hauling ore from Death Valley through to today's activities. They have an excellent variety of books and information available and outdoor mining equipment displays.

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Boron | Minerals Education Coalition

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Gravity Borax Method GBM Mercury Free Gold Recovery

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Jan 06, 2019· When you're in the land of Borax, you have to stop at the Borax Museum! It may be tiny, but it's also packed with interesting information, displays, and even a few books you can't find in other parts of the park. Make sure to head out back and see all of the old mining equipment on display - including wagons, carriages, and even an old train.