00000nam 2200000za 4500 9.840882 CaOODSP 20221107151943 cr ||||||||||| 170802s1973 onca ob f000 0 eng d CaOODSP eng n-cn--- M38-8/121E-PDF M38-8/121 Tervo, R. O. Communication methods in underground mines [electronic resource] / R.O. Tervo and M.D. Everell, Mining Research Centre. Ottawa : Information Canada, 1973. p. 36-43, p. 61-[63] : ill. Reprint series ; RS 121 Cover title. "Reprinted from Canadian Mining Journal, volume 93: (part one) number 8, pp. 36-43, August; (part two) number 11, pp. 61-63, November, Montreal, 1972." Historical publication digitized from print 2017 [by Natural Resources Canada]. Includes bibliographical references. “At the request of the Mining Association of Canada, a survey was made of communication methods used in underground mines. This subject has received a great deal of attention in Europe, particularly in modern, mechanized coal mines where the goal has been to increase production and improve efficiency through automation and remote control of machinery. The development of improved systems is continuing both in Europe and North America. The U.S.B.M. has recently sponsored the development of a coal mine rescue and survival system for long-distance "through the earth" transmission. In Europe the first long-range remote control of a mining machine by radio has been achieved. Conventional equipment is continually improved to meet the demand for rugged, reliable equipment that can withstand conditions encountered underground"--p. 36. gccst Mining industry gccst Communications Everell, M. D. Canada. Natural Resources Canada. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Reprint series - Dept. of Energy, Mines and Resources, Mines Branch ; RS 121 (CaOODSP)9.834843 PDF 3.64 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-121-eng.pdf 300200