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ABSTRACT This paper presents the effective fragmentation and flyrock control strategies that could be applied at quarries to improve the productivity and safety Fragmentation measurement and

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CALCULATION OF DRILLING AND BLASTING PARAMETERS FOR Using of explosives in modern mining is very important for the good efficient and rational and accepted methods of choice and calculation drilling-blasting

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Stone Splitting Methods Introduction Numerous methods have been employed over the centuries for splitting stone into pieces The length of time it took for the method and quality of

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Health and Safety at Opencast Mines Alluvial Mines and blasting technique methodology of quarry The use of explosives to break rock at a mine or quarry Safe and efficient blasting requires all quarry and mine be to use non-electronic blasting methods Management methods Quality PlanningMethods relate to the control of the effects of

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Blasting for quarrying for stones may be quite different from blasting for road clearance In the latter case the size of the broken stone is of not much consequence Quarrying by blasting therefore requires very experienced persons thoroughly acquainted with blasting explosives on the one hand and strength qualities of rocks on the other hand

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The change to slot drilling was relatively recent for Cold Spring which changed methods because the L-blasting technique was resulting in a lower overall yield Cold Spring also designs and builds a custom head for the drilling units The end product is a trimmer drill with 360-degree rotation and a 40-foot extension on the boom and similar drills are in use in most Cold Spring quarries

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