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The processing and stockpiling areas will move throughout the mine life to optimize operations. <br /> Processing equipment is portable and will enter and leave the site throughout the year. The <br /> processing area will include a portable crushing and screening plant, material stockpiling, mobile <br /> fuel tanks, mobile truck scales, and related structures. The crushing and screening plant will <br /> produce various sizes of product sorted into separate stockpiles. As equipment and stockpiles <br /> will be portable throughout this time, such associated structures are not shown on Map C-3. <br /> Mining will occur in four phases and may occur out of order. Table 1 details expected rates, <br /> tonnage, and disturbance by phase. All phases will continue the existing pit in benches of 20 feet <br /> to a maximum pit depth of 100 feet relative to the highest pre-mine elevation. <br /> Reclamation will occur concurrent to mining to further stabilize the landscape and minimize the <br /> visual impact of the Siskin Pit over the course of the mine's life. Additionally, rapid reclamation <br /> will provide the added benefit of sound dampening and dust mitigation. <br /> Table I: Mining Phase Dimensions <br /> Final Anticipated <br /> Phase# Mined/Disturbed Recoverable Duration <br /> Surface (acres) Tons (millions) (Years)* <br /> 1 12.9 3.21 16 <br /> 2 6.6 1.49 7 <br /> 3 17.0 4.13 21 <br /> 4 16.4 3.92 20 <br /> *Duration assumes a 200,000 ton/year mining rate. <br /> Siskin Pit 0 Lewicki&Associates <br /> January 2024 D-3 <br />