Canadian Mining Journal

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Imperial’s Mount Polley shows promise following 2014 tailings dam failure



It’s been over two and a half years since a catastrophic tailings dam failure paralyzed activity at Imperial Metals’ (TSX: III; US-OTC: IPMLF) Mount Polley copper-gold mine, 56 km northeast of Williams Lake, B.C., but now, with a long term water management permit in hand and recent delivery of promising brownfield exploration results, the future of the open pit and underground operation appears bright.

The last batch of results from a 6,680-metre underground drill program expanded porphyry related mineralization at the project’s Martel zone to over 130 metres long, 170 metres high and 140 metres wide, with drill highlights including 124.3 metres of 1.6% copper and 0.25 g/t gold. (A higher grade intercept within the interval measured 18.9 metres of 2.5% copper and 0.66 g/t gold.)

Martel resides beneath the previously mined Wight pit and 400 metres from the recently developed and mined Boundary zone. The mineralization extends outwards into a series of discontinuous lenses known as the Green zone, where the latest intercepts returned 8.7 metres grading 4.4% copper and 1.95 g/t gold.

Steve Robertson, vice-president of corporate affairs at Imperial, tells The Northern Miner that the Martel and Green zones could change the production profile of Mount Polley, which has a mine life until 2022.

Continue reading at The Northern Miner.