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The top documents tagged [history of mining]
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Refers to the leaching of acidic waters from previously mined metal or coal sources. Sulfuric acid (acid rock drainage) comes from natural oxidation of
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LITHOSPHERE. Precious as well as base metals are mined in SA. Precious metals : metals with a high monetary value; relatively rare e.g. gold, silver
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Little Cottonwood Canyon By: Laura Sipos, Cami Duckett, Alara Roberds, Jake Minardi, Courtney Watson
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keystage2gallerytrail
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Catalogo Brusletto
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Acid Mine Drainage
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Little Cottonwood Canyon
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GOLDfields_southdeep_MAY11_emea-bro
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keystage3gallerytrail
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Nenagh Film Week
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Activities for All
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