Midnight Sun Intercepts 1.0% Copper over 22 Metres and 0.98% Copper over 15 Metres at Dumbwa
Executive Summary
- Midnight Sun Mining reports significant copper intercepts from additional drill holes at the Dumbwa target, including 1.0 % Cu over 22 m (hole DBW‑25‑010) and 0.98 % Cu over 15 m (hole DBW‑25‑009).
- The company now has ~1.5 km of mineralised strike defined and plans to drill an additional 75 holes (~15,000 m) over the next three kilometres of strike through 2026.
- Operational update: five rigs are active with a sixth expected in early 2026; drilling will continue through the rainy season at ~90 % productivity.
Key Details
- Assay Highlights
- DBW‑25‑009 – 0.98 % Cu over 15 m (155–170 m) and 0.79 % Cu over 5.25 m (119.75–125 m).
- DBW‑25‑010 – 1.00 % Cu over 22 m (117–139 m); also 0.31 % Cu over 9 m (45–54 m) and 0.32 % Cu over 9 m (101–110 m).
-
DBW‑25‑006 – multiple lower‑grade intervals: 0.25 % Cu over 11 m (142–153 m), 0.18 % Cu over 4 m (159–163 m), 0.20 % Cu over 4 m (167–171 m).
-
Drilling Program Status
- Total holes completed to date: 51; holes ongoing: 5.
- Immediate plan: 75 additional holes (~15,000 m) to test the mineralised corridor over the next 3 km of strike.
-
Five drill rigs currently operating; a sixth rig anticipated in early 2026.
-
Operational Outlook
- Exploration will continue through the rainy season with an expected 90 % productivity rate (metres per rig per shift).
-
Samples from 11 additional holes have been submitted for assay; remaining samples are being prepared.
-
Geological Context
- The Dumbwa target exhibits a north‑south, steeply inclined mineralised trend comparable to Barrick’s Lumwana Mine.
-
Central corridor hosts bornite‑chalcopyrite disseminated mineralisation with occasional high‑grade veins (bornite‑chalcopyrite‑quartz‑feldspar).
-
Quality Control / Assurance
- Drilling performed with conventional diamond rigs; core captured in PQ then HQ size.
- Samples processed by SGS Labs (Kalulushi, Zambia) using four‑acid digest and ICP‑OES finish.
-
QA/QC program includes insertion of blanks, duplicates, or certified reference material every 10th sample.
-
Location Data (selected holes)
- DBW‑25‑009 – X 440 450, Y 8 627 310, Azimuth 270°, Dip –60°, EOH 260 m.
-
DBW‑25‑010 – X 440 300, Y 8 627 310, Azimuth 90°, Dip –50°, EOH 170.1 m.
-
Qualified Person: Darin Labrenz, P.Geo., reviewed and approved the technical data under NI 43‑101.
Notable Quotes
“We continue to deliver rapid progress at Dumbwa… With nearly 1.5 kilometres of mineralised strike defined to‑date… our confidence in the system’s size, high‑grade potential, and significance has never been higher.” – Kevin Bonel, COO
All non‑material boilerplate, forward‑looking statements, and company background have been omitted for brevity.