Midnight Sun Adds Third Drill Rig At Dumbwa
Midnight Sun Adds Third Drill Rig At Dumbwa
Vancouver, British Columbia, September 23rd, 2025 – Midnight Sun Mining Corp. (TSXV:
MMA / OTC: MDNGF) (“Midnight Sun” or the “Company ”) is pleased to announce the
mobilization of a third diamond drill rig to its flagship Dumbwa Target, a key component of
the Company’s Solwezi Project, located in the Domes Region of Zambia.
The most recent drilling tender has been awarded to Chibuli Investments Limited , a local
drilling contractor based in Ndola, Zambia. Under the terms of the contract, a minimum of
6,000 metres of core drilling will be completed with the newly added rig. This initial phase of
drilling is focused on the southern 11.5 kilometres of the ~20-kilometre Dumbwa Target.
“The addition of a third rig allows us to fast-track our exploration efforts at Dumbwa” stated
Midnight Sun CEO Al Fabbro. “This is an incredibly exciting phase for the Company, as we
work to build upon our new geological model of the mineralization at Dum bwa. Our
intensified drilling campaign reflects our structured approach and strong commitment to
aggressive, but systematic, exploration. With drilling continuing to ramp up, we anticipate a
consistent stream of results in the coming months.”
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.
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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ADEQUACY OR ACCURACY OF THIS NEWS RELEASE.
This news release contains “forward-looking statements” within the meaning of the applicable Canadian
securities legislation that are based on expectations, estimates, assumptions, geological theories, and
projections as at the date of this news release. The information in this news release about any information
herein that is not a historical fact may be “forward looking statements.” Any statement that involves
discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions,
future events or performance (which may, but not always, include phrases such as “anticipates”, “plans”,
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actions, events or results “may” or “ could”, “would”, “might” or “will” be taken to occur or be achieved)
are not statements of historical fact and may be forward-looking statements and are intended to identify
forward-looking statements.
Although the forward -looking statements contained in this news release are based upon what
management believes, or believed at the time, to be reasonable assumptions, the Company cannot assure
readers that actual results will be consistent with such forward-looking statements, as there may be other
factors that cause results not to be as anticipated, estimated or intended. Such factors include, among
others, risks relating to the timing and ability of the Company to obtain and the timing of the approval of
relevant regulatory bodies, if at all; risks relating to property interests; risks related to access to the project;
risks inherent in mineral exploration, including the fact that any particular phase of exploration may be
unsuccessful; the availability of contractors; geo-political risks; the global economic climate; metal prices;
environmental risks; political risks; and community and non- governmental actions. Further to this,
geological similarities or characteristics are not guarantees or certainties of successful exploration. Neither
the Company nor any other person assumes responsibility for the accuracy and completeness of any such
forward-looking statements. The Company does not undertake, and assumes no obligation, to update or
revise any such forward-looking statements or forward -looking information contained herein to reflect
new events or circumstances, except as may be required by law.