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The Leadville Mill M 1990-057 <br /> EXHIBIT C—MILL PLAN <br /> Page 4-3 <br /> management activities are discussed in greater detail in Sec. 14, Exhibit U, Designated <br /> Mining Operation Environmental Protection Plan. <br /> The COREeRtFate reagent storage room is a 24ft by 20ft extension located at the <br /> southwest corner of the Mill Building immediately adjacent to the mill sump. T#e <br /> concentrates will be pIaeed iR 2 ten—upeFsaeks„ er 55 gallon dFums, t­ <br /> A new crushing facility, which will allow feF seleetive OFe handling and steFage,--is <br /> scheduled fE)F C0A5tFUGtiE)R in the next expansien phase. The erushing faellity wilt <br /> _"„, <br /> • Tr GI. al <br /> = An enelesed eFushing and 5CFeeRing building; and <br /> 4.2 MILL MANAGEMENT ACTIVITIES (SEC 6 .3 .3(2)(A)) <br /> The mill will be reconfigured to use conventional agitated leaching, using sodium <br /> cyanide from low-grade vein dumps (RoM) located nearby. Each area supplying RoM <br /> will operate on an independent Reclamation Permit to be issued by CDRMS. <br /> The Mill uses conventional technology via a .,-,bination Of GFUshing, ffindOR97 <br /> that e4theF exide er sulfide E)Fes may be cencentFated. The process flow sheet as shewR <br /> 4.2. 1 PROCESS FLOWSHEET <br /> Figure 4-1 shows a simplified process flowsheet and material balance. Design criteria <br /> used to develop this flowsheet are based on metallurgical test work completed in <br /> January 2021. Key design parameters are summarized in Table 4-1. <br /> 4 A1AR1Q6 <br />