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Mining - Wikipedia

Mining is the extraction of valuable geological materials and minerals from the Earth and other astronomical objects. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel,

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Mining - Underground, Safety, Techniques Britannica

Mining - Underground, Safety, Techniques: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the

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Kumtor Gold Mine - Mining Technology

2010年12月20日  The gold deposit is mined using conventional open-pit mining methods. The mine currently produces about 15,000t of ore and 220,000t of waste per day. The

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New Mining Museum / HULTMANMAGNUSSON ArchDaily

2011年7月10日  Published on July 11, 2011. Share. Young Swedish architects, HULTMANMAGNUSSON, won the competition to design a new mining museum in

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