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6.0 HIGH GRADE MILL FACILITIES <br />6.1 Introduction and General Characteristics <br />The High Grade Mill facilities are being developed to allow enhanced gold recovery of various <br />higher grade ore deposits from the Cresson Project. The High Grade Mill facilities will be <br />constructed on a prepared area within the SGOSA, the High Grade Mill facilities platform, as <br />described in Section 5.7.1. Following grading of the SGOSA, the High Grade Mill facilities <br />platform will be constructed with a soil liner fill ( "SLF ") overlain by a linear low- density <br />polyethylene ( "LLDPE ") liner that is tied into the SGVLF liner system described in Section 7.0. <br />Containment associated with the concrete foundation and curbing within the mill building will <br />provide additional protection from potential leaks and spills within the mill building. The High <br />Grade Mill facilities design documents are included in Appendix 10, Volume VI. Construction <br />of the High Grade Mill facilities are proposed to begin in 2012, with mill processing startup <br />scheduled to begin in 2014. <br />The design for the High Grade Mill facilities is a 250 -ton per hour grinding, froth flotation, and <br />gold leaching facility to improve the gold recovery from some of the higher grade gold ore <br />deposits at the Cresson Project. A general flow diagram for the High Grade Mill facilities is <br />included as Figure 6 -1. Three products will be produced in the High Grade Mill Facilities: 1) <br />free gold separated in a gravity circuit; 2) a gold laden carbon product that will be further <br />processed in the AGADR; and 3) an agglomerated ground product that will be placed on one of <br />the VLFs for further gold recover. The second product is produced by flotation processes and in- <br />tank leaching processes. The third product is produced by agglomeration of ground product <br />separated in the flotation and leaching processes that will then be placed on one of the VLFs <br />where additional gold recovery can occur using the leach processes. The High Grade Mill <br />facilities will use pH modifiers, flotation reagents, cyanide, flocculants, and cement binders, as <br />shown in Table 6 -1. <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension 2 <br />6 -1 <br />