Canadian mining journal January-June 1905 . section map either above or below the stope on which you areworking. Parallel lines are drawn through the plotted pointsto the line of the shaft. The elevation of each point is locatedon its corresponding line and points so obtained are stope is thus In the case where stopes are located from the square setsthe work is much easier. The distances are measured perpen-dicular and located. On the long section map certain colours are given to cer-tain levels. The main drift on each level is given a certain Lines of elevation are rule
Canadian mining journal January-June 1905 . section map either above or below the stope on which you areworking. Parallel lines are drawn through the plotted pointsto the line of the shaft. The elevation of each point is locatedon its corresponding line and points so obtained are stope is thus In the case where stopes are located from the square setsthe work is much easier. The distances are measured perpen-dicular and located. On the long section map certain colours are given to cer-tain levels. The main drift on each level is given a certain Lines of elevation are ruled across the map in yellow or pur-ple ink at every loo feet of elevation for facility in working. When the long section is taken on the dip or plane of thedip of the vein, a table is worked out for values from i-ioo the vertical and their equivalent values on the plane means the saving of a lot of time in reduction of elevationof points. Geological Maps.—The particular geology of each level isworked up by the engineers and is plotted on tracings fromthe working map. Each level has a separate sheet. The workunderground is plotted to scale on small vellum sheets aboutlo by 8 inches. Each of these has traced on it a portion of thelevel. Thus there are a number of these sheets to each
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
