2012-08-16_REVISION - M1977493 (2)

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OSFs) prior to McNulty OSF expansion. These drains will first be covered by a protective drain fill and buffer lift of waste rock to protect the drainage systems during OSF expansion Climax will begin OSF expansion activities sequentially in areas where the soil salvage, drain construction and placement of protective rock cover have been completed. Currently, the Climax Mine Plan is to excavate the pit in three phases. Early phases (e.g., cuts or pushbacks) will supply ore to the mill while the stripping (i.e., overburden removal) for future ore supplies is being completed in subsequent cuts. In general, waste rock will be transported from the point the haul road exits the pit to the closest available lift on the OSFs. At times, longer hauls may be required due to operational slope constraints, construction sequencing, or other considerations. The three phases in the current mine plan are designated Phase 1, Phase 2 and Phase 3. The numeric designation is the order in which the phases will serve as the main ore supply to the mill. Because ore in later phases needs to be pre- stripped before ore in earlier phases is exhausted, early mining will occur in 2 or 3 phases simultaneously. Later in the mine life all waste rock will have been stripped, and Phase 3 will be operated solely to supply ore to the mill. Phase 1 is focused on coning -down the mining area that was left behind when the open pit mine was shut down in the 1970's. Of the phases, Phase 1 has the lowest strip ratio. Material from this phase exits the pit at about the 11,520 foot elevation near the primary crusher. Waste rock excavated from Phase 1 will be stockpiled on the nearest/lowest available lift on the North 40 OSF. In general, material will be placed from the bottom up. Phase 2 is a pushback that brings down a portion of Ceresco Ridge in the southeast quadrant of the pit. Initial heavy equipment access to Phase 2 is across the Caved Zone Haul Road (in -pit haul road) that routes material to the northwest, exiting the pit at about the 12,000 foot elevation to the middle elevations of the McNulty OSF. Initial waste material excavated from Phase 2 will be placed on older OSF material in the McNulty OSF footprint between the 11,700 foot elevation and the 12,000 foot elevation. When Phase 2 has been mined down to approximately the 12,080 foot bench, access from the cut will switch over to the new Ceresco Haul Road. This haul road runs north- south, along Ceresco Ridge, past the main pit entrance and the crusher at about the 11,520 foot elevation. Phase 2 material exiting through this route will be placed on the lowest available lift of the North 40 OSF and, afterwards when this are completed, on the lowest available lift of the McNulty OSF. Phase 3 is designed to be mined down from Bartlett Ridge in the northeast quadrant of the pit. The highest elevation of the McNulty OSF against Bartlett Ridge will be at about the 12,400 foot elevation. All Phase 3 waste material mined above that elevation will be transported down and placed on the highest available lift on the McNulty OSF. Between approximately the 11,400 foot and 12,400 foot mining elevations, waste material will be transported laterally from the pit to the nearest available lift on the McNulty OSF. For mining below the 11,400 foot elevation, waste material will be transported upward on the haul road network to the lowest available lift on the McNulty OSF. 3