ONTARIO – A new mine strategy is paying off for Kirkland Lake Gold of the town of the same name. Since January 2014 when the expansion projects were completed, the average head grade has risen by 22% to 15.4 g/t Au from 10.6 g/t. A key change was to adopted a grade-driven mine plan instead of a tonnage-driven one.
A new mining horizon on the 5400 level has been developed in the South Mine Complex (SMC), and mucking began in the first stope, 5417, during the quarter ended July 31, 2014. Kirkland Lake expects to mine five stopes on the 5400 level during the current fiscal year. Proven and probable reserves from the 5400 down to the 5300 level include 432,265 tonnes at 19.5 g/t Au and containing 274,000 oz of gold.
Two new single boom, T1D electric hydraulic jumbo drills have also arrived on site. One drill will work in the main SMC decline to improve productivity and to develop to the 5600 level where proven and probable reserves include 299,271,195 tonnes at 23.9 g/t and containing 209,000 oz. The second drill has been assigned to an area where productivity improvements in quality tonnes are desired.
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