Mining block stability monitoring by roof-to-floor convergencePastarus, Jüri-RivaldoProceedings of the 8th International Symposium on Environmental Issues and Waste Management in Energy and Mineral Production – SWEMP 20042004 / p. 211-214 : ill https://kirjandus.geoloogia.info/en/reference/34118 https://www.researchgate.net/publication/242478776_Mining_block_stability_monitoring_by_roof-to-floor_convergence