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Friedman, M. (1983) Analysis of rock deformation and fracture induced by rock cutting tools used in coal mining, Sandia Contractor's Report SAND83-7007, March, 39 pp. Hoag.
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Coal mining in Colorado dates back to 1859, when a pair of men began mining a coal d. In 1927 Colorado coal miners again laid down their tools, this time under the banner of th.
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Friedman, M. and Ford, L.M. (1983) Analysis of rock deformation and fractures induced by rock cutting tools used in coal mining,Proceedings: 24th U.S. Symposium on Rock Mec.
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