The disregard of the natural features of the ground, shown in locating the crushing and dressing machinery without reference to the easy delivery of the material from the mine and the fall required for the perfect treatment of the ores, and for getting... Report of Progress - Geological Survey of Canada - Page 278by Geological Survey of Canada - 1872Full view
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R. Drummond - Mines and mineral resources - 1918 - 368 pages
...expenses when poor ground has to be worked through. Fifth — The small size of the areas or claims, not as regards actual acreage, but in relation to the...position and thickness of the veins. This necessitates the wasteful* multiplication of shafts and plants of machinery for crushing and dressing the ores....