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  • Final Clean-up and Recovery of Your Gold - The New 49ers

    Some miners like to “clean-up” their sluice boxes after every hour of operation. .... CAUTION: Heating the concentrates from a gold mining program should not be...

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  • Breakthrough clean gold mining technique replaces cyanide with ...

    May 21, 2013 ... Mining gold's a dirty business. To extract gold from raw ore, a lot of cyanide is required, and wherever a lot of cyanide is found, there are also...

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  • Colorado Mine Spill Aftermath: How to Clean a River - Live Science

    Aug 12, 2015 ... Cleaning up the Gold King Mine spill, which sent a plume of orange water down the Animas River, is a matter of treatment and dilution.

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  • Gold Mining - Clean Up Concentrator 1 - The Centrifuge - YouTube

    Aug 30, 2012 ... This is a gold concentration machine called a gold centrifuge.It can do up to 5 yards an hour of minus 1/4" material. Works very very well but...

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  • Gold cyanidation - Wikipedia

    Gold cyanidation is a metallurgical technique for extracting gold from low-grade ore by ... The expansion of gold mining in the Rand of South Africa began to slow down in the 1880s, as the new deposits .... Under Article 14, companies must also put in place financial guarantees to ensure clean-up after the mine has finished.

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  • Gold Mining Activities in the Amazon: Clean-Up Techniques ... - jstor

    Article Marcello M. Veiga and John A. Meech. Gold Mining Activities in the Amazon: Clean-up Techniques and Remedial. Procedures for Mercury Pollution.

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  • Cleaning Up Mining Waste - The Property and Environment ...

    Cleaning Up Mining Waste. Stuart Buck and David Gerard. Introduction. Since the California gold rush a century and a half ago, hardrock mining has produced...

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  • Gold Mining - Gold Clean Up Concentrator 2 - The Centrifuge ...

    Sep 9, 2012 ... This is a gold concentration machine called a gold centrifuge.It can do up to 5 yards an hour of minus 1/4" material. Works very very well but...

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  • Cleaning Up Unexploded Bombs By Turning Them Into Gold Mines ...

    Sep 24, 2012 ... Laos is filled with gold. It's also filled with bombs. A new project envisions a path toward a less dangerous landscape by having the miners give.

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  • The Environmental Disaster That is the Gold Industry

    Feb 14, 2014 ... A clean gold mining industry is indeed possible, he says. Moreover, the industry is not as destructive at it may seem. Some states have...

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