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fipura f. Viaw o/ b.arl rwdr /w dwlp wWa. <br />poplar cribbing, the side pieces of which may be <br />tapered to make the bend in the Chute. Waste from <br />the second lift is blasted onto the lagging and this <br />is levelled off and the S-in. poplar plank floor laid. <br />This completes the slope preparation and [he slope <br />is ready for the regular sloping cycle. At this <br />point a 4-ft. x 5-f[. raise is usually driven from the <br />back of the slope to the next level. It is inclined <br />at 50' up the rake of the oreshoot. It acts as a <br />ventilation raise and escape aay and later, as the <br />slope is worked higher, as a service raise by which <br />materials such as cribbing and plank are delivered <br />to the slope. <br />The first lift above the timber is drilled in <br />the same manner as for the first two from the drift <br />backs. The slope crew consists of a driller and <br />mocker. About 76 holes in the vein and 4 in the <br />footwall are drilled per shift. The holes in ore are <br />blasted at the end of each shift. The average length <br />of lift broken is about 20 ft. per day and the height <br />is approximately 5.5 ft. Care is taken to break the <br />ore as clean and narrow as possible, to avoid <br />excessive dilution and to this end ore holes must be <br />confined to the quartz vein. The broken ore is <br />mucked by hand into the chutes. A short length of <br />20 ]b. rail is fastened across the collar of each chute <br />to prevent excessive sized muck going into the chute, <br />and accidental falls. As much waste as is practicable <br />is sorted in the scope. About 20 per cent of the run- <br />of-mine ore is sorted at the picking belt, in the <br />crusher house. <br />~~'hen the breaking and mucking operations <br />have advanced far enough alorb on one lift the floor <br />is lifted and the chutes and manways are raised. <br />The chutes arc built at 3-in. x 8-in. x 40-in. poplar <br />cribbing and the manways of stalls and round <br />lagging. Pieces of flooring which are unusable as <br />such are used to brace the chutes. \1'aste is blasted <br />from the footwall and levelled between the chutes <br />and manways and the floor is relaid, ready for the <br />next drilling cycle. <br />Chute and manway raising, waste-fill levelling <br />and floor laying is done by a two-man timber crew. <br />fipur! 2. Viaw o/ eAwa /iwSarsy,~Fewup Mod blacks and hM ~ ~~• <br />yalac. <br />