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Minerals | Coal. Coal is a combustible rock of organic origin composed mainly of carbon, hydrogen and oxygen, with lesser amounts of nitrogen, sulphur and other elements.
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South Africa is a world leader in mining. The country is famous for its abundance of mineral resources, accounting for a significant proportion of world production ...
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Aug 11, 2014 · Open-pit mining is much safer than shaft mining. In underground mining, the threat of a cave-in or release of toxic gas is a constant concern.
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disadvantages of mining is that the chemicals used to extract the minerals will go down lakes which well put a big impact on the environment UPDATE This answer needs …
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