write a short note on 'mining' .
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Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. ... Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.
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mining is the process of digging things out of the ground. Any material that cannot be grown must be mined. mining is the extraction of valuable minerals or other geological material from the earth.
usually from an ore body, lode, vein, seam ore recovered by mining include metals, coal, oil shale, limestone and clay.
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