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    Evidence of what is believed to be the first example of iron mining and smelting points to the ancient Hittite culture in what is now Turkey. Because iron was a far superior material for the manufacture of weapons and tools than any other known metal, its production was a closely guarded secret. ... The first and most obvious is the process of ...

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  • Environmental Risks of Mining

    Mining is an inherently invasive process that can cause damage to a landscape in an area much larger than the mining site itself. The effects of this damage can continue years after a mine has shut down, including the addition to greenhouse gasses, death of flora and fauna, and erosion of land and habitat.

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  • Bauxite Mining and the Environment

    The common raw material for aluminium production, bauxite is composed primarily of one or more aluminium hydroxide compounds, plus silica, iron and titanium oxides as the main impurities. It is used to produce aluminium oxide through the Bayer chemical process and subsequently aluminium through the HallHeroult electrolytic Process .

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    Bauxite Production Plant. BACKGROUND INFORMATION. ... They occur as a weathering product of low iron and silica bedrock in tropical climatic conditions. BAUXITE PRODUCTION. ... After mining, the bauxite is refined into alumina using the Bayer process (refining). The majority of the alumina is then transformed into aluminium using the Hall ...

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  • HRW Says Bauxite Mining Boom in Guinea Threatens Locals

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  • what are the byproducts of bauxite BINQ Mining

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  • Bauxite Mining A few myths and realities

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  • use of water in bauxite process

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