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7,515 feet (Map C-6). Mining depths with respect to the highest ridge point will be <br /> approximately 650 feet deep. The highest pre-mining ground surface elevation will be <br /> approximately 8,500 feet, and the post mine elevation will vary from 7,850 feet to 7,515 feet, <br /> depending on the phase of mining that is the last one. The thickness of the deposit is beyond <br /> what will be mined under this permit. The gravel overlies the bedrock units and is 350 feet thick <br /> along the center of the site near the CCP and thins to 0 feet along the western extent of the site <br /> (Figure 1). <br /> 6.4.4(f)(ii) <br /> The entire site is composed of metamorphic bedrock; therefore, the final excavated surfaces and <br /> footprint of the mine will be blasted metamorphic bedrock and fines. <br /> 6.4.4(g) <br /> The primary materials to be mined are aggregates for use as construction materials in the Front <br /> Range. Gravel cobble and large boulders may be marketed and sold as landscape materials. <br /> Material will be crushed and further processed with respect to size and sorted into piles <br /> accordingly. Aggregate will be screened onsite in the processing area to blend the desired final <br /> product. Sorted and stockpiled final saleable material will be hauled off site primarily to the <br /> Colorado Front Range market. Fill material, diverted from the WRL, may be sold from this site <br /> as a commodity. Asphalt, concrete, and washed rock may also be sold from this site. <br /> 6.4.4(h) <br /> Gold may be recovered during overlying gravel mining. <br /> 6.4.4(i) <br /> Explosives will be used. See the preliminary blast plan is included in Appendix 3 —Preliminary <br /> Blast Plan. Blasting will be completed by a contract licensed operator who will provide a <br /> detailed final blast plan to the Division prior to any blasting as a part of mining. <br /> Young Ranch Resource <br /> February 2020 D-16 <br />