Discover, Develop, Operate


  • open pit copper/gold mine
  • mill processes approx. 20,000 tonnes per day
  • commenced operations 1997
  • current mine life to 2026
  • 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 mine is owned and operated by Mount Polley Mining Corporation (MPMC), a subsidiary of Imperial.

Following the temporary suspension of operations on August 4, 2014 due to the breach of the tailings dam, modified mine operations were restarted on August 5, 2015. MPMC received further authorizations from the BC Ministry of Energy and Mines (MEM) and the Ministry of Environment (MOE) on June 23, 2016 which consented the mine’s return to normal operations utilizing the repaired and buttressed tailings storage facility. Since 2014 significant rehabilitation of the areas impacted by the breach has been completed. Instream work required to create fish habitat was also completed on approximately one kilometre in the upper portion of Hazeltine Creek below Polley Lake. Additional necessary rehabilitation and monitoring of these areas will continue. Research and monitoring to date indicates the environment is recovering rapidly.

Mining activity in 2016 was focused in the Cariboo pit and the Boundary zone underground workings. The underground development to allow diamond drilling on the Martel Zone, was completed in 2016, following which a 5,000 metre underground drill program was initiated. The goal of the program is to confirm a higher grade mineable block within the previously defined resource of 6.26 million tonnes grading 1.17% copper and 0.40 g/t gold.

The 2017 production target for Mount Polley is 26-29 million pounds copper and 55-60 thousand ounces gold. All 2017 production is expected to come from open pit operations.

Annual Production

Years Ended 2016 2015(1) 2014(2)
Copper - 000’s pounds 25,339 8,007 24,490
Gold - ounces 46,44415,190 25,901
Silver - ounces 90,125 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 Jan | 2017