| | | Midnight Sun Confirms Dumbwa System With Initial Copper Intercepts
Vancouver, British Columbia--(Newsfile Corp. - October 1, 2025) - Midnight Sun Mining Corp. (TSXV: MMA) (OTC Pink: MDNGF) ("Midnight Sun" or the "Company") is pleased to announce initial intercepts within the Dumbwa Target, which feature significant copper mineralization such as 0.51% Cu over 39.7 metres ("m") including 1.13% Cu over 7m, and 0.48% Cu over 25.9m, successfully confirming the mineralized sulphide copper system at depth. At this early stage of work on Dumbwa, drilling is designed to both test the geological models and to quickly develop a clear understanding of the host structure for copper mineralization along the entire ~20-kilometre strike-length of the target. Assay results are provided below from holes DBW-25-003 and DBW-25-007.
Hole DBW-25-003 intercepted 0.48% Cu over 25.9m and 0.29% Cu over 5.2m in shear zone controlled mineralization.
Hole DBW-25-007, located 500m south of DBW-25-003, intercepted 0.51% Cu over 39.7m including 1.13% Cu over 7.0m and 0.33% Cu over 23.0m, also in shear-zone controlled mineralization. Malachite and chalcopyrite were observed starting at 6m, followed by nearly continuous copper sulphides being observed for over 150m.
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