processes used to extract gold from the litosphere

coal mining and processing energy trends insider

mining the coal coal miners use giant machines to remove coal from the ground they use two methods surface or underground mining many u s coal beds are very near

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geography4kids com biosphere natural resources

natural resources and recycling the earth is a closed system for our examples we need to think that nothing comes in except energy and nothing goes out except

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everything maths and science

in modern times money matters and so the first step in mining is to find a suitably sized deposit of ore for example diamonds were found in kimberley and gold ore

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