Abstract:The processes of immediate roof exfoliation and pillars collapse is accompanied by significant subsidence of the ground surface. Ground surface subsidence causes soil erosion and flooding, swamp formation, agricultural damage, deforestation, changes in landscape, ground water level decreasing and the formation of unstable cavities. For the last four years a new blasting technology with great entry advance rates (EAR) has been introduced in an experimental mining block. By improved blasting technique the EAR re… Show more
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