Northisle Reports Additional Results from 2025 Drilling at West Goodspeed at its North Island Project
Executive Summary
- Northisle announced additional 2025 drill results from six new holes at the West Goodspeed target, highlighting a high‑grade interval of 35 m grading 0.97% Cu Eq. within a broader 195.5 m zone of 0.42% Cu Eq.
- Cumulative drilling to date totals 10,046 m (6,903 m in West Goodspeed/Red Dog area), reinforcing a >1 km strike‑length mineralized corridor with bulk‑tonnage potential and discrete higher‑grade zones.
- The results support continued Phase V exploration, step‑out drilling, extensive infill work, and underpin the 2025 PEA’s favorable economics (29% IRR, $2 bn NPV).
Key Details
- Hole GS25‑23: 195.5 m @ 0.42% Cu Eq. from 64 m depth; includes 35.0 m @ 0.97% Cu Eq. from 224.5 m.
- Hole GS25‑22: 30.0 m @ 0.67% Cu Eq. (13–43 m) with 18.0 m @ 0.81% Cu Eq.; deeper interval 30.0 m @ 0.50% Cu Eq. (53–83 m) with 14.0 m @ 0.72% Cu Eq. (61–75 m).
- Hole GS25‑21: Multiple intervals – 28 m @ 0.24% Cu Eq. (80–108 m), 18 m @ 0.25% Cu Eq. (144–162 m), 51 m @ 0.36% Cu Eq. (237–288 m).
- Hole GS25‑24B: 121.0 m @ 0.28% Cu Eq. from 75 m depth; includes 27.0 m @ 0.42% Cu Eq. (147–174 m).
- Hole GS25‑25: Extends high‑grade zone – 18.0 m @ 0.89% Cu Eq. (309–327 m) within 75.0 m @ 0.43% Cu Eq. (276–351 m).
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Hole GS25‑26: 104.0 m @ 0.37% Cu Eq. (61–165 m) with 20.0 m @ 0.51% Cu Eq. (91–111 m).
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Total West Goodspeed drilling in 2025: 12 holes completed, assays received for 10; additional 8 holes drilled toward Red Dog area (assays pending).
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Overall drill program to date: 10,046 m total – 6,903 m West Goodspeed/Red Dog, 2,132 m across Cougar, Goodspeed & Northwest Expo targets, 1,012 m within Red Dog open‑pit footprint.
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Technical notes: Cu‑Eq calculations use metal prices from the 2025 PEA (Cu $4.20/lb, Au $2,150/oz, Mo $21/lb, Re $1,950/kg) and assume 80% recoveries; intervals are drill intersections, not true widths.
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Future plans: Phase V drilling to continue step‑out work at West Goodspeed, extensive infill across Northwest Expo, Red Dog, Hushamu, and additional regional targets; PFS‑level metallurgical testing slated for Q4 2025.
Notable Quotes
“We continue to be encouraged by the results to date from West Goodspeed… confirmed mineralization over a corridor spanning more than 1,000 m in strike length with only 50% of results received.” – Sam Lee, President & CEO
All boilerplate, forward‑looking statements and disclaimer sections have been omitted.