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Construction Demolitions Mining

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0source construction planning equipment and methods 6th ed. mcgraw hill massive intact rock 0.95 thin well-cemented layers with tight joints 1.10 rock structure k s heavily cracked frequent weak joints weakly cemented layers 1.30 other cases of deposition 1.00 bedding steeply dipping into face 0.95 bedding steeply dipping into cut 1.18..

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