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D-23 <br /> and/or right-of-way terms and conditions (as well as other factors) may also be required to provide CSC <br /> with the information necessary to further define mine planning parameters in these areas. <br /> Nevertheless, it is anticipated that an estimated 743,000 cubic yards of growth medium will be generated <br /> through pre-stripping, all of which will be utilized in concurrent reclamation activities carried out behind <br /> the (advancing) active pit operations area in any given year. This pre-stripping, limited to the depicted <br /> known resource area, encompasses roughly 457 acres of mineable area, which in turn, is anticipated to <br /> produce a(preliminarily)estimated 11.2 million tons of ROM mined tonnage. <br /> The process waste stockpile at the end of Year 13 is estimated to contain a total volume of approximately <br /> 11.0 million cubic yards, encompassing an approximately 130-acre area. However, as a result of prior <br /> "advance" reclamation, to include side-slope reduction to a nominal post-reclamation configuration of <br /> 5H:IV, the partially reconfigured process waste stockpile rise approximately 13-ft. above surrounding <br /> terrain on the western portion,with the crest reduction on the east end resulting in a nominal 58 ft. height <br /> above the mined-out pit floor(again,descending at a 5H:1 V slope gradient. The increase in areal extent of <br /> the stockpile will be accomplished, in part, via a continuation of the easterly expansion(truck dump and <br /> dozer push) of the footprint area within the previously-developed pit void; and, in part, as a result of the <br /> "advance reclamation"slope reduction activities. <br /> Post Year 13—Other Potentially Mineable Resources(Temporary Mining Deferral Areas) <br /> As indicated earlier, CSC has identified and set-aside two discrete "Temporary Mining Deferral Zones", <br /> within which there exist deficiencies in data as to definitive mineable resource characteristics (thickness, <br /> areal extent, and quality, etc.) and/or localized site conditions and/or characteristics. Inferred resources <br /> within these areas have been preliminarily defined as follows: <br /> (1) Section 7"Temporary Mining Deferral Zone" <br /> The Section 7 "Temporary Mining Deferral Zone" is classified as such due to a lack of sufficient <br /> exploration data(i.e.,number and density of boreholes)to support meaningful analysis of the resource <br /> base and a determination of its general mineability. However, based on the limited data available to <br /> date,CSC anticipates that the gross resource base in this area may exceed 26 million tons of mineable <br /> material,potentially representative of an incremental two(2)to five(5)years extension to the currently <br /> projected thirteen(13)year overall life-of-mine. <br /> Keenesbuxg No. 2 Mine-112 Reclamation Operation—November 22, 2019 <br />