
Midnight Sun defines large-scale copper potential at Zambia’s Dumbwa Project
27/3/2026
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8:22
Midnight Sun Mining Corp Vice President Business Development Adrian O’Brien joined Steve Darling from Proactive to outline the company’s latest progress at its Dumbwa Project in Zambia, where ongoing drilling continues to define what could become a significant large-scale copper discovery.
O’Brien explained that the project has now moved firmly into the resource delineation phase following its initial discovery in August. To date, the company has completed 166 drill holes, establishing approximately four kilometres of strike length—an early indication of the scale of the mineralized system. The broader exploration target lies within a 20-kilometre copper-in-soil geochemical anomaly, which O’Brien described as one of the largest and highest-grade anomalies ever identified in Zambia.
Rather than pursuing widely spaced step-out drilling, Midnight Sun is employing a systematic, tight-spacing drill strategy designed to build a detailed and reliable understanding of the deposit. This methodical approach is expected to support the development of a robust resource estimate and reduce geological uncertainty as the project advances.
The company is currently targeting between 1 billion and 1.5 billion tonnes of mineralization within the first 12 kilometres of the anomaly, with this phase of drilling anticipated to be completed by the third quarter. This scale highlights the potential for Dumbwa to emerge as a major copper asset within Zambia’s prolific Copperbelt region.
O’Brien also emphasized the company’s strong financial position, with approximately $35 million in treasury supporting an aggressive drill campaign of roughly 10,000 metres per month across five active rigs. This level of funding provides the flexibility to maintain momentum and accelerate exploration efforts.
Beyond the technical progress, O’Brien pointed to increasing geopolitical interest in Zambia’s copper sector, as global demand for critical minerals continues to rise. Heightened competition among major economies to secure stable copper supply chains could further elevate the strategic importance of the Dumbwa Project as it advances toward potential development.
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