00000nam 2200000za 4500 9.834894 CaOODSP 20221107150534 cr ||||||||||| 170406s1972 oncb|||#o f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/148E-PDF M34-20/148 Dubnie, Amil. Northern mining problems with particular reference to unit operations in permafrost [electronic resource] / Amile Dubnie. Ottawa : Dept. of Energy, Mines and Resources, Mines Branch, 1972. iv, 18, [2] p. map Technical bulletin ; TB 148 Title from cover. "June 1972". Historical publication digitized from print 2013 [by Natural Resources Canada] Issued also in French under title: Problèmes minièrs dans le nord avec référence particuliere aux chantiers d'exploitation dans le pergelisol. Bibliography: p. 15-18. Includes abstract in French. gccst Mining industry Canada. Energy, Mines and Resources Canada. Canada. Mines Branch. Problèmes minièrs dans le nord avec référence particuliere aux chantiers d'exploitation dans le pergelisol (CaOODSP)9.834899 Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) 0576-2685 TB 148 (CaOODSP)9.834857 PDF 1.24 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20-148-eng.pdf