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Surface crown pillar evaluation for active and abandoned metal mines : proceedings of the international conference : Senator Hotel, Timmins, Ontario, Canada, Nov. 15-17, 1989 / sponsored by CANMET, CIM, Ontario Ministry of Northern Development and Mines ; [M.C. Bétournay, editor] = Évaluation de piliers de surface pour les mines de métaux actives et abandonnées : compte rendu de la conférence internationale : Senator Hotel, Timmins, Ontario, Canada, Nov. 15-17, 1989 / parrainé par CANMET, ICM, Ministère du développement du Nord et des mines ; [M.C. Bétournay éditeur]. (SP ; 89-5)
Surface crown pillar evaluation for active and abandoned metal mines : proceedings of the international conference : Senator Hotel, Timmins, Ontario, Canada, Nov. 15-17, 1989 / sponsored by CANMET, CIM, Ontario Ministry of Northern Development and Mines ; [M.C. Bétournay, editor] = Évaluation de piliers de surface pour les mines de métaux actives et abandonnées : compte rendu de la conférence internationale : Senator Hotel, Timmins, Ontario, Canada, Nov. 15-17, 1989 / parrainé par CANMET, ICM, Ministère du développement du Nord et des mines ; [M.C. Bétournay éditeur]. (SP ; 89-5)
Paper
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Energy, Mines, and Resources Canada
c1989.
<M15-A8996>
National Diet Library
Subject Heading
Pillaring (Mining) -- Congresses.
Ground control (Mining) -- Co...
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