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stone quarrying used sand making stone quarry

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stone quarrying used sand making stone quarry

Sand, gravel, andcrushed rock quarriesemploy standard surface-mining techniques.Crushed stoneisusedfor concrete aggregate, for road building, and, in the case of limestone, as flux in blast furnaces and for chemical applications. Thequarrying techniqueconsists of drilling and blasting to fragment the rock. A large number of charges are fired at one time, producing up to 20,000 tons ofbroken stonein one …

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