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Mining is the extraction of valuable minerals or other geological materials from the earth usually from an orebody, lode, vein, seam, reef or placer deposits.
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As if I needed yet another hobby, I got interested in gold prospecting several years ago. My travels around the West often took me to old mining towns and mine sites ...
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In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the process of separating commercially valuable minerals from their ores.
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Zinc. Zinc concentrate is produced by separating the ore, which may contain as little as 2% zinc, from waste rock by crushing and flotation, a process normally ...
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ENVIRONMENTAL ENGINEERING . Recovery of tin and copper by recycling of printed circuit boards from obsolete computers . L. A. Castro; A. H. Martins*
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