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EXHIBIT C MINING PLAN <br /> 1. General Mining Plan <br /> Map E-1 shows the current conditions of the Bancroft Placer Mine. Mining will disturb most of <br /> the 9.4 acres delineated on Map E-1. Mine access is via State Highway 141 which is a paved <br /> road with gravel shoulders. Map E-2 shows the site access location. The southern and eastern <br /> borders of the property parcel are fenced with four strand barbed wire fencing. <br /> Mining of the —15 foot thick gravel deposit will progress in a nondirectional pattern throughout <br /> the site and potential higher grade areas will be preferentially targeted. Due to various past <br /> mining efforts on the site, unmined areas will be targeted first. Only two acres will be disturbed <br /> and out of reclamation at any given time in the active mining area. An additional 0.5-acre <br /> processing and tailings area will extend through the mine's life. The gravel deposit will be <br /> excavated via front end loader and either directly fed into the processing plant or placed within a <br /> dump truck for transport to the processing area. <br /> Diesel-hydraulic equipment will be used to mine and transport material to trommels and/or <br /> horizontal deck wash plants. No chemical processing treatments will be used on site; only water <br /> is used in processing gold and gravel. The undersize material (<5/8") will pass through a series <br /> of sluice boxes to gravity concentrate recoverable gold. Sluice boxes concentrate gold similarly <br /> to how a stream channel would and is termed `hindered settling.' Hindered settling allows <br /> particles to settle by decreasing terminal velocity. <br /> The classic sluice box is an open channel with a flat riffled bottom (Figure 1). Riffles are <br /> generally formed by expanded metal. Gravels to be processed are mixed with water in the <br /> screening process and flow across the riffles. Riffles generate fluidized beds that allow the <br /> hindered settling process to occur. Denser particles such as gold then work their way into the <br /> riffles and are trapped. Riffles will be regularly cleared, and the collected material will be further <br /> processed for gold. Water used in on site sluice will be discharged into the processing area <br /> settling pond adjacent to the sluice box. The oversize portion of the material flow is rejected by <br /> the trommel/wash plant and rehandled by a front-end loader or backhoe. <br /> Bancroft Placer Mine 4.ng U.Vki&"ASOWWWA.nAd <br /> July 2020 C-1 <br />