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M1983-141 Amendment 2 <br />Page 3 of 4 <br />mass RQD values in the 90% range and RMR values also in the 90's, numerically <br />quantifying the excellent ground conditions seen in the workings. <br />Development <br />Development drifts will be driven aiong veins or as cross-cuts in barren granite. The <br />development faces in veins will be split shot, (ore is blasted separately from waste) in <br />order to recover the vein material while limiting dilution. The face is drilled, but only the <br />holes in the vein aze loaded and blasted. This vein material is then loaded, via a rail <br />mounted, over-shot mucker, into ore cars and trammed to the surface load-out facility. <br />The remaining drilled holes aze then Loaded and blasted. The waste material will then be <br />removed to the surface and placed on the waste rock pile. Drifts in barren material will <br />generate only inert granite. <br />Ground support is achieved, where necessary, by the installation of four (4) or five (5) <br />foot friction type rock bolts. Development drift vein widths can be from only a few <br />inches wide to over a foot, however the design drift width is five (5) feet. Due to the <br />limited alteration zone defining the vein width, this type of vein is very easy to split <br />shoot. <br />Economic factors dictate that loss of ore material into the waste rock pile will be <br />detrimental to this operation, and be limited as much as possible, thereby limiting the <br />exposure of mineralized material in this waste rock. <br />Mining <br />The Cash and Who-Do Mines will use a selective mining method called resuing, or <br />stripping. This is a type of slope mining. Mining at extremely narrow widths is <br />accomplished horizontally, on strike with the deposit, and vertically, on dip with the <br />deposit. <br />When mining, the ore and waste will be split shot using explosives. Back rounds aze <br />drilled above the developed drifts. The sequence of blasting is determined by the vein <br />width, the alteration width and selvage (if any) and other geologic or geometric factors. <br />Again, ore is blasted separately from the wall rock. Slick sheets are laid down prior to <br />blasting the ore down to allow segregation of vein from waste. As the slope develops <br />vertically, the ore is then removed by slushing to a chute. The ore in chutes is drawn or <br />pulled into ore cazs and trammed to the contained steel ore bin on surface. At no time is <br />ore exposed to storm waters. Additionally, no drainage from the mine occurs. <br />Pillars may be left over main haulage dribs. Smaller drifts and sidings will use timber or <br />steel sets to support the waste within the slope. Due to the process, the waste material <br />must be left in the slope as it is used as the drill platform for the next round to be shot. <br />Some azeas may encounter conditions when the swell factor of the waste is sufficient to <br />require that some material be pulled from the slope. This minimum amount of waste, <br />which has been sorted from the vein, would be trammed to the surface, and placed on the <br />