Midnight Sun begins drilling at Solwezi

Executive Summary

• Midnight Sun Mining Corp. has commenced diamond drilling at its flagship Dumbwa target on the Solwezi project in Zambia.
• The program started with one drill rig, with a second rig en route to accelerate exploration.
• Initial hole targets a strong chargeability anomaly on IP line 2 to confirm and correlate near‑surface copper sulphide mineralization.

Key Details

• Drill locations were selected after integrating geochemical sampling, airborne VTEM survey, historic drill results, and a recent dipole‑dipole induced polarization (IP) survey (referenced in the July 17 2025 press release).
• One diamond drill rig is on site; a second rig is scheduled to arrive shortly.
• The first hole is positioned on the eastern half of IP line 2, testing a pronounced chargeability anomaly interpreted as the target horizon.
• The Dumbwa target is described as a near‑surface, low‑strip, bulk‑tonnage exploration target with geology and mineralization analogous to Barrick’s Lumwana mine.
• Soil anomalies at Dumbda show peak copper values up to 0.73 % Cu over a ~20 km strike length and >1 km width.
• Prior drilling has intersected sulphide copper mineralization; additional drilling is required to delineate dip, continuity, size, and scale of the system.
• The recent IP survey covered the southern 11.5 km of the strike extent, revealing structural frameworks (flat‑lying to tightly folded horizons) and major cross‑cutting structures that explain offsets between historic soil geochemistry and previous drill intercepts.
• Qualified Person Darin Labrenz, P.Geo., has reviewed and approved all technical data in accordance with NI 43‑101.

Notable Quotes

“When I first visited Dumbwa almost two years ago, it immediately brought to mind my early days working on Lumwana… The similarities between the two sites were remarkable… Now, as we progress at Dumbwa, that excitement continues to remain high.” – Kevin Bonel, Chief Operating Officer, Midnight Sun Mining Corp.