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

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 Mount Polley property encompasses 19,601 hectares, consisting of seven mining leases totalling 2,007 hectares, and 45 mineral claims encompassing 17,594 hectares. Mount Polley Mining Corporation (MPMC), a wholly owned subsidiary of Imperial, is the operator.

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 allow 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 operation plan, ore is being mined from the Cariboo pit and the Boundary zone underground workings with the tailings being stored in the Springer pit. An application submitted to the MEM in March 2016 is currently in the review process for a permit to resume normal operations and for use of the TSF when the temporary permit expires.

Production in 2016 is dependent upon receipt of the permit to allow for return to full operations.

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 Mar | 2016
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