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Diesel/ Hydraulic Jumbo Drill <br />2 <br />Jackleg Pneumatic Rock Drill <br />8 <br />1 /2 yd Skid Steer Loader <br />3 <br />1 to 3.5 yd LHD Loader <br />3 <br />5 to 10 Ton Haul Truck <br />4 <br />375 CFM Air Compressor <br />2 <br />5 to 30+ hp Ventilation Fan <br />6 <br />Diesel Powered Generator <br />2 <br />Prince Albert Mine Plan of Operations 110(d) Operation Description <br />4.2 Underground Mining Operations <br />4.2.1 Mining Method <br />The mining method employed for underground operations will be a traditional room - and - pillar <br />method modified to account for the varied height and width of Salt Wash formation ores. <br />Underground operations will continue the development work started under P- 2005 -21, with a <br />potential underground development of over 4000 additional feet of eight -foot wide by nine -foot high <br />drift driven along and into the ore - bearing zones. Underground development work will focus on <br />finding and accessing economical ore bodies and excavating horizontal drift to establish adequate <br />underground ventilation pathways and a suitable secondary escapeway for a potential underground <br />emergency. The current development plan includes driving a development drift towards the southeast <br />to connect with the existing decline tunnel at the inactive "Better Be" mine. One ventilation borehole <br />from the surface may be installed (see Figure 3 "Mine Plan Site Map" and Section 4.1.5 above) if <br />deemed necessary during development work towards the Better Be. Ore production will occur in <br />conjunction with the ongoing development work. Ore thickness and width varies and the mining <br />height may be up to twelve feet high and over twenty feet wide at times, with waste rock typically <br />produced at two to five times the ore production rate in tons. <br />4.2.2 Production Rates <br />The following maximum production rates are anticipated for the Prince Albert Mine: <br />a. 75 Tons / Day of Uranium and Vanadium Ore <br />b. 375 Tons / Day of Mine Waste <br />4.2.3 Underground Mining Equipment <br />Equipment used in the underground mining operation will be equipment that is typical for a small <br />underground uranium mining operation and may include equipment listed in Table 3B: <br />Table 3B <br />Underground Equipment <br />Equipment 1 Number of Pieces <br />Rimrock Exploration and Development Page 17 of 27 <br />