process of gold making 7646

How gold is made - history, used, parts, procedure, industry ...

Background. Gold, recognizable by its yellowish cast, is one of the oldest metals used by humans. As far back as the Neolithic period, humans have collected...

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The Process of Excavating and Refining Gold - YouTube

Sep 15, 2007 ... How gold is produced, from excavation to ingot-form.

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How Is Gold Purified? | Sciencing

Apr 24, 2017 ... Gold is purified through a process of high temperature heating or chemical exposure, depending on the purity of the mined gold, according to...

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Extracting Gold - Extracting Gold | HowStuffWorks

Removing the gold-bearing rock from the ground is just the first step. To isolate pure gold, mining companies use a complex extraction process. The first step in...

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Clean gold: making artisanal mining work - Mining Technology

4 days ago ... Miners in the Clean Gold project are transitioning from mercury to cyanide-based processing methods. Image courtesy of SEF Canada.

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