Technical Report for the Maricunga Gold Mine - Kinross Gold
Technical Report for the Maricunga Gold Mine - Kinross Gold
Technical Report for the Maricunga Gold Mine - Kinross Gold
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<strong>Kinross</strong> <strong>Gold</strong> Corporation<strong>Maricunga</strong> <strong>Mine</strong> <strong>Technical</strong> <strong>Report</strong>23.0 ADDITIONAL REQUIREMENTS FOR OPERATINGPROPERTIES23.1 Mining OperationsThe <strong>Maricunga</strong> <strong>Mine</strong> is an operating mine with significant infrastructure in place. The reserveestimates presented in this document are sufficient to support <strong>the</strong> operation <strong>for</strong> 16 yearsbased on daily production of 45,000 tpd.<strong>Maricunga</strong> production re-opened in October 2005 and achieved its targeted production rateof 14 million tonnes per year (40,000 tonnes per day) in late 2005. The mine operates two12-hour shifts per day <strong>for</strong> 352 days annually allowing <strong>for</strong> inclement wea<strong>the</strong>r interruptions.Final pit design <strong>for</strong> Verde and Pancho assumed 10 meter bench heights, bench face anglesof 65° to 70°, berm widths of 8 to 11 meters, berm interval of 20 meters, inter-ramp angles of38° to 52.5° and haul road gradient at 10% with a 25 meter road width.The <strong>Maricunga</strong> gold recovery process consists of a single line primary crushing, finescrushing (secondary and tertiary), heap leach and adsorption and regeneration (“ADR”) plantoperation. The process treats 45,000 tonnes per day of dry <strong>Maricunga</strong> ore using primarycrushing followed by a secondary and tertiary crushing plant. The crushing plant product isapproximately 80% passing 10.5 millimetres. A pad type heap leach and an ADR plant areused <strong>for</strong> gold recovery.A comprehensive program of metallurgical testing incorporating bottle roll tests and columnleach tests of samples obtained from drilling was established to determine gold recovery andreagent consumption data <strong>for</strong> <strong>the</strong> remaining Verde resources and <strong>the</strong> Pancho resource.Based on <strong>the</strong> recovery estimates by ore type, process recovery over <strong>the</strong> mine life averaged69% of contained gold in <strong>the</strong> plant feed. Life of mine annual gold production is expected torange from 230,000 to 305,000 ounces on a 100% basis.The increase in reserve as of December 31, 2007 will require an expansion of <strong>the</strong> heapleach facility. This report considered <strong>the</strong> findings of a pre-feasibility study level completed byDave Prins of PrinZ Mining Services based in Santiago, Chile. The increased reserves will105
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