how silver gold is extracted from the ground

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    Gold Mining Methods - Ground Truth Trekking

    Oct 6, 2010 . Today, gold is extracted in hardrock mines that directly mine the .. Alaska's hardrock gold/silver mines (primarily Greens Creek, Fort Knox, and.

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    BBC - GCSE Bitesize: Methods of extracting metals

    The Earth's crust contains metals and metal compounds such as gold, iron oxide and aluminium oxide, but when found in . To become useful, the metals have to be extracted from whatever they are mixed with. copper; silver; gold; platinum.

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    BBC - GCSE Bitesize: Methods of extracting metals

    Copper is easily extracted, but ores rich in copper are becoming more difficult to find. The Earth's crust contains metals and metal compounds such as gold, iron oxide and aluminium oxide, but when found in . copper; silver; gold; platinum.

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    GOLD MINING METHODS AND TECHINQUES. MINING FLAKE .

    Placer gold mining streams, rivers, gold panning, sluice boxes and. Most placer gold is found within 50 feet of the surface of the ground. I have seen the gold that can be extracted using the Gold Recovery Pump and the Gold Hornet. Gold can be found free in nature, but, is usually associated with silver, quartz, calcite,.

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    silver processing Britannica

    Jan 28, 2015 . Boiling with concentrated sulfuric acid to separate silver and gold is .. This is processed by slag fuming, a process whereby the residue is.

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    Gold

    Although the Earth's crust averages a mere 0.004 grams of gold per ton, . gold was one of the first two or three metals (along with copper and silver) used by . Gold is obtained by two principal mining methods; placer and vein mining, and.

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    How gold is found, mined and processed - Mine

    May 19, 2009 . Gold is everywhere on Earth, it's just not commonly found in . and underground mixed in with other metals such as copper, silver and lead.

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    Extracting Gold - How Gold Works 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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