Ining Methods SlideShare
Dec 05, 2008 Mining Methods Continuous Miner Rate of drivage 50 meters day Production 1500 Tonnes day For seams of 1 in 5 gradient and flatter Thickness of 30 m to 40 m Mechanised Roof Bolter Bolting 240 bolts day For seams of 1 in 5 gradient and flatter Thickness of 20 m to 50 m
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