Canadian Mining Journal


LEAD-ZINC: Darnley Bay outlines plans for Pine Point

Map of drill targets at the Pine Point lead-zinc project. (Credit: Darnley Bay)

NORTHWEST TERRITORIES – Toronto-based Darnley Bay Resources is making plans to drill its Pine Point lead-zinc project 65 km east of Hay River. The company received a preliminary economic analysis in April 2017, and has been studying historical data to identify additional resources.

Sixteen deposits are targeted for confirmation drilling:

  • Five at the East Millsite area where 2.7 million indicated tonnes at 1.86% lead and 4.37% zinc were previously identified. There are also 4.2 million inferred tonnes grading 0.83% lead and 2.78% zinc.
  • Three at the Cluster Pit area where the estimate includes 572,280 indicated tonnes grading 2.76% lead and 10.82% zinc as well as 564,600 inferred tonnes at 0.80% lead and 4.70% zinc.
  • One at the South Millsite area containing 376,680 tonnes grading 1.40% lead and 5.50% zinc as well as 1.4 million inferred tonnes grading 1.10% lead and 5.40% zinc are outlined.
  • Seven at the North Trend area. The indicated resource there is 1.1 million tonnes at 3.30% lead and 6.65% zinc. There is also an inferred resource of 1.8 million tonnes grading 0.99% lead and 3.65% zinc.

Together these 16 deposits add up to 4.8 million indicated tonnes averaging 2.28% lead and 5.78% zinc plus 7.9 million inferred tonnes averaging 0.91% lead and 3.50% zinc.

Darnley Bay expects confirmation drilling will successfully add all or most of the historical deposits to the mine plan. Then it would increase the size of the mill to approximately 2,500 t/d in the feasibility study, a 39% increase from the 1,800-t/d mill  envisaged in the preliminary economic assessment.

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