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Smelting - Wikipedia

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The Borax Method of Gold Extraction for Small-Scale Miners

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Metal - Wikipedia

A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard when in solid state, opaque, shiny, and has good electrical and thermal conductivity.

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smelting | Definition & Facts | Britannica.com

Smelting: Smelting, process by which a metal is obtained, either as the element or as a simple compound, from its ore by heating beyond the melting point.

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Mining - Wikipedia

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