Methods of mining block stability analysis for room-and-pillar mining with continuous miner in Estonian oil shale minesPastarus, Jüri-Rivaldo; Nikitin, OlegProceedings SWEMP2002, Cagliari, October 7-10, 2002 : Seventh International Conference on Environmental Issues and Waste Management in Energy and Mineral Production2002 / p. 677-682 : ill https://www.researchgate.net/publication/266868001_METHODS_OF_MINING_BLOCK_STABILITY_ANALYSIS_FOR_ROOM-AND-PILLAR_MINING_WITH_CONTINUOUS_MINER_IN_ESTONIAN_OIL_SHALE_MINES