High-Resolution Ground Magnetics Unlocks New Drill Targets at Dumbwa

Midnight Sun Mining Corp. (MMA) announced results from an initial high-resolution ground magnetic survey at its wholly owned Dumbwa copper deposit in Zambia. The survey covered approximately 2.7 km by 2.5 km in the northern portion of Dumbwa’s Central Mineralized Block, identifying late-stage faulting and additional prospective structural corridors.

The data successfully correlated magnetic signatures with known high-grade copper mineralization, allowing the company to "fingerprint" the structural architecture. This analysis identified two new untested targets for basement-hosted sulphide copper mineralization located approximately 1–1.2 km east of the main mineralized corridor. Drilling to test these new targets is scheduled to begin in Q3 2026 as part of the Phase 2 exploration program.

The announcement confirms the company’s strategy of using geophysics to expand the deposit footprint but introduces no new financial metrics, production timelines, or monetization milestones.

The stock has declined from $2.00 to $0.63 over the past year, suggesting the market has already discounted the exploration phase. As this represents an incremental, expected step in a long exploration cycle, no material positive or negative impact on the stock price is expected in the immediate term.

Midnight Sun Mining Corp. is an exploration-stage copper company focused on the Solwezi Dome in Zambia. Its flagship project is the Dumbwa copper deposit, a near-surface, strain-controlled sulphide system analogous to Barrick's Lumwana mine. The company also holds the Kazhiba Main oxide copper deposit, which received a maiden Mineral Resource Estimate of 2.33 million tonnes at 1.41% Cu in January 2026. The management team includes experienced mining executives with backgrounds in Barrick, Freeport McMoRan, and Roxgold.