Slope steepening investigations for the Valley pit at the Teck Highland Valley copper mine using pre-split blasting
Mining Engineering, 2019, Vol. 71, No. 4, pp. 16-16
Veillette, Mathieu; Rose, Nick; King, Matthew
The Teck Highland Valley copper (THVC) mine is located approximately 55 km (34 miles) southwest of Kamloops and approximately 20 km (12 miles) west of Logan Lake, British Columbia, Canada (Fig. 1). Mining at THVC is conducted at three openpit operations comprised of Valley, Lornex and Highmont with a total annual output on the order of 300 kt (330,000 st) copper concentrate and 5 kt (5,500 st) of molybdenum concentrate. The Phase 8 pushback in the Valley Pit (Fig. 2) was mined from 2011 to 2016. Successful slope steepening occurred in the later stage of the pushback with the implementation of pre-split blasting in 2015 and 2016.
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