00000nam 2200000zi 4500 9.869784 CaOODSP 20221107162937 m o d f cr ||||||||||| 190313t19651965onc ot f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- M38-1/168-1965E-PDF M38-1/168 Coates, D. F., 1923- author. Pillar loading. Part I: literature survey and new hypothesis / D.F. Coates, Fuels and Mining Practice Division. Literature survey and new hypothesis Ottawa : Department of Mines and Technical Surveys, Mines Branch, October 1965. ©1965 1 online resource (viii, 84 pages) : figures. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 168 Digitized edition from print [produced by Natural Resources Canada]. Title from cover. Includes bibliographic references (pages 71-77). "This research work on pillar loading is in what might be described as the area of engineering theory. As such, it is concerned largely with the combining of existing scientific theories into a rational hypothesis for predicting the loading of pillars. Hitherto, this has been possible only in a very crude way and only for horizontal workings using the tributary area theory"--Abstract, page ii. Includes abstract in French. Pillar loading Canada. Department of Mines and Technical Surveys. Canada. Mines Branch. Research report (Canada. Mines Branch) R 168. (CaOODSP)9.855660 PDF 1.36 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-168-1965-eng.pdf