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Keywords: maingate
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Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-038
... metals & mining coal pillar extraction maingate reservoir geomechanics pillar failure site seam lower seam pillar lower seam pillar visual observation Reservoir Characterization pillar failure seam pillar tailgate Sigma Colliery pillar panel bord bottom seam pillar...

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