Discover, Develop, Operate

Mount Polley Mine

  • open pit copper/gold mine
  • mill processes approx. 20,000 tonnes per day
  • commenced operations 1997
  • current mine life to 2025
  • concentrate trucked to Port of Vancouver
  • mine operations suspended Aug 4, 2014 due to TSF breach
  • modified mine operations restarted Aug 5, 2015
  • mine received authorizations on June 23, 2016 to return to normal operations

Mount Polley is an open pit copper/gold mine with an underground component located in south-central British Columbia, 56 kilometres northeast of Williams Lake. The property encompasses 19,601 hectares, comprised of seven mining leases totalling 2,007 hectares, and 45 mineral claims encompassing 17,594 hectares. Mount Polley Mining Corporation, a subsidiary of Imperial, is the owner/operator of the mine.

Mine operations were restarted on August 5, 2015 following the temporary suspension of operations on August 4, 2014 due to the breach of the tailings storage facility (TSF). Permit amendments issued by the Ministry of Energy and Mines (MEM) and the Ministry of Environment (MOE) allowed the mine to proceed on a modified operation plan to process a maximum of 4 million tonnes of ore over a period of up to one year. During the modified operations, tailings were being stored in the Springer pit. Feed for the mill is being mined from the Cariboo pit and the Boundary zone underground workings.

On June 23, 2016 Mount Polley mine received authorizations from MEM and MOE to allow Mount Polley mine to return to normal operations. The repaired and buttressed TSF will be utilized.

Production targets for 2016 are 27-29 million pounds copper and 48-52 thousand ounces gold.

Annual Production

Years Ended 2015(1) 2014(2)
Copper - lbs 8,007,328 24,489,725
Gold - oz 15,190 25,901
Silver - oz 25,911 74,770
(1)production from August 5 to December 31, 2015
(2)production from January 1 to August 4, 2014


For current and/or additional information, refer to the Company’s Press Releases, Quarter Reports & Annual Information Form.

Forward Looking Information
Update Aug | 2016
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