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The Leadville Mill <br />M1990-057 <br />EXHIBIT C — MILL PLAN <br />Page 4 -2 <br />The Mill and associated facilities are illustrated on Figures 4 -1 through 4 -4. The <br />current facility includes 2 separate metal buildings: <br />• Mill Building. The mill building contains the fine ore bin, reagent storage area, <br />ball mill circuit, flotation circuit, concentrate thickener, laboratory, mill office, <br />safety /training /change room, concentrate storage room, and restroom; <br />• Crushing Building. The crushing building contains the RoM grizzly, primary, <br />and secondary crushers. It is connected to the mill building via an enclosed <br />conveyor crossover bridge, <br />Other facilities include an electric utility line, trailer foundation, sewage lift station, <br />upper and lower gravel mill access roads, 3 ore stockpiles, 1 topsoil stockpile, 1 TSF <br />overburden stockpile, a TSF redesigned to meet CDRMS performance standards, as <br />summarized in Section 4.3, Tailings Storage Facility and geotechnical analysis (Sec. <br />15.0, Geotechnical Stability 6.5). <br />The property boundary is surrounded by a 4- strand animal - friendly fence, as <br />prescribed by CDOW (Appendix 7 -9). <br />The facility can be accessed by either an upper (north) or lower (south) road. Within <br />the permit area, these roads connect to a 24ft -wide gravel access road connecting to <br />US Highway 24. RoM ore haulage will access the grizzly on the upper mill road. <br />Concentrate shipments, will use the lower mill road. <br />The fine ore feed bin, chemicals and reagents are contained in the Mill Building <br />(Figure 4 -2). Reagents and chemicals used in ore processing will be stored in over- <br />pack drums or within secondary containment structures. Any leakage, or <br />containment issues with the stored chemicals or reagents will be directed to the mill <br />sump and then to the TSF (Figure 4 -6) or collected and disposed in an approved <br />disposal facility. Waste management activities are discussed in greater detail in Sec. <br />14, Exhibit U, Designated Mining Operation Environmental Protection Plan. <br />The concentrate storage room is a 24ft by 20ft extension located at the southwest <br />corner of the Mill Building immediately adjacent to the mill sump. The concentrates <br />will be placed in 2- ton "supersacks" or 55 gallon drums, or client- specified shipping <br />containers for offsite shipment. <br />Version 1.0 April 2013 <br />