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Results 51 - 52 of 52
8/1/1990 - Conference papersThis paper describes research designed to quantify the behavior of a particular size abutment pillar prone to burst or bump (local terminology). This research has attempted to construct the stress and convergence profiles of the pillar.
1/1/1990 - Conference papersThis U.S. Bureau of Mines paper discusses the importance of an interface slip mechanism between the coalbed and the surrounding strata in controlling the extent and pattern of stresses and deformations in a coal pillar.