Midnight Sun Initiates Drilling at Flagship Dumbwa Target The program marks the first systematic drill program carried out across Dumbwa
Midnight Sun Initiates Drilling at Flagship Dumbwa Target
The program marks the first systematic drill program carried out across Dumbwa
– following up on the ~20-kilometre Dumbwa copper-in-soil anomaly and recent
dipole-dipole IP Survey.
Vancouver, British Columbia, August 6th, 2025 - Midnight Sun Mining Corp. (TSXV: MMA /
OTC: MDNGF) (“Midnight Sun” or the “Company ”) is pleased to announce that diamond
drilling has commenced at the Company’s flagship Dumbwa Target on the Solwezi Project in
Zambia.
Drill locations were finalized following a rigorous analysis and review of all available data,
including geochemical sampling, airborne VTEM survey, previous drill results, and the recent
dipole-dipole induced polarization (“IP”) survey (see press release dated July 17, 2025).
The drill program has begun with one diamond drill rig, and a second drill is en route and
scheduled to arrive on site shortly to expedite the program.
Midnight Sun’s COO, Kevin Bonel, states: “When I first visited Dumbwa almost two years ago,
it immediately brought to mind my early days working on Lumwana —now a crown jewel of
Barrick’s copper portfolio and one of the largest deposits in Zambia. The similarities between
the two sites were remarkable, and I quickly recognized the geological traits they shared.
Both are hosted in basement dome geology, exhibit layered mineralization, and show
extensive copper clearings at surface highlighting the strength of these systems. I knew right
away this was a project I wanted to be a part of. Now, as we progress at Dumbw a, that
excitement continues to remain high. A pplying the same approach my team and I used at
Lumwana, we’ve carefully interpreted the promising results from the IP survey in the context
of previously existing data, and I bel ieve this has provided a clear roadmap to defining
Dumbwa’s potential.”
The initial focus is to confirm and correlate disseminated copper sulphide mineralization
with the target horizon as interpreted by the IP chargeability response. The initial hole is
situated on the eastern half of IP Line 2 and tests a very strong chargeability anomaly.
About Dumbwa:
Dumbwa represents a near-surface, low-strip, bulk-tonnage exploration target with geology
and mineralization closely resembling Barrick’s Lumwana Mine , ~60 kilometres to the west.
Dumbwa boasts a high-grade copper-in-soil anomaly extending ~20 kilometers along strike
and more than 1 kilometer wide, with peak copper values reaching 0.73%. Previous drilling
has confirmed sulphide copper mineralization, but additional drilling guided by structural
controls is needed to better define the dip, continuity, size, and scale of the system. Multiple
stacked mineralized horizons have been identified, which appear to be similar in deposition
to those found at the Lumwana Mine.
The recent dipole-dipole IP survey, covering the southern 11.5 kilometers of the strike extent,
has revealed the structural framework of the Dumbwa target, critical for understanding its
geometry. The interpreted IP results indicate a horizon that varies from relatively flat -lying
and gently dipping, to areas with clear evidence of folding, ranging from open folds to very
tight upright folds. There is a strong correlation between the mineralized intervals
encountered in prior drilling at Dumbwa and the target horizon interpreted from the IP data.
Additionally, a positive relationship exists between this horizon and the overlying soil
anomaly. The interpreted IP survey also identified several major cross-cutting structures,
which help explain offsets between historical soil geochemistry and previously drilled
mineralization.
Dumbwa Drill Collar Location 1
Qualified Person: Darin Labrenz, P.Geo., a consulting geologist for the Company and
Qualified Person under NI 43 -101, has reviewed and approved the technical data and
contents of this release.
About Midnight Sun
Midnight Sun is focused on exploring our flagship Solwezi Project, located in Zambia.
Situated in the heart of the Zambia-Congo Copperbelt, the second largest copper producing
region in the world, our property is vast and highly prospective. Our Solwezi Project is
surrounded by producing copper mines, including Africa’s largest copper mining complex
right next door, First Quantum’s Kansanshi Mine. Led by an experienced geological team
with multiple discoveries and mines around the world to their credit, Midnight Sun’s goal is
to find and develop Zambia’s next generational copper deposit.
ON BEHALF OF THE BOARD OF MIDNIGHT SUN MINING CORP.
Al Fabbro
President & CEO
For Further Information Contact:
Adrian O’Brien
VP Business Development and Communications
Tel: +1 604 809 6890
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