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|Numerical modelling is an effective aid for the planning and design of underground coal mines. With funding from the National Energy Research Development and Demonstration Program, CSIRO Division of Geomechanics has produced a workstation environment which will allow the Australian Coal Mining Industry access to a wide range of numerical design models. The emphasis is on usability and simplicity and the long-term aim is that the techniques should be used routinely at the mine site, so that, in the future, design of a new underground mine will routinely involve modelling of each proposed layout.Each of the five numerical analysis programs, FESOFt, FLAC, MNLAY, FEBLK and UDEC has both strengths and weaknesses. Some analyses with each program demonstrate areas when; observed in situ behaviour in underground coal mines has been successfully modelled, and the results of site monitoring provide a basis for comparison with the predictions of numerical models.|