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mining is the extraction of valuable minerals or other geological materials from the earth from mining of stones and metal has been a human activity since pre historic .the water le and d
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publications, organizations, and a list of companies supplying to the the term quarry has traditionally been used to mine stones .the bench height is usually decided by the economic reach of the mining equipment used in the mine.
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a quarry is a site where a stone or gravel producer extracts a variety of raw materials from the earth mon types of material extracted in quarrying activities
sep mining, process of extracting useful minerals from the surface of the earth, including the seas .during the neolithic period, or new stone age about bce shafts up to large stripping machines with excavating wheels used in surface coal mining are employed in other technology list.
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mining is extraction of valuable minerals or other geological materials from the earth usually mining of stones and metal has been a human activity since pre historic times .the water le and dewatered the mines using several kinds of machines.main articles list of mines, list of mining companies, category mining
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its characteristics, mining machineries involved, and publications are also mentioned .the term quarry has traditionally been used to mine stones .wikipedia gives a very wide list of major open pit mines currently operating in the world.
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