Midnight Sun Intercepts 1.0% Copper Over 22 Metres and 0.98% Copper Over 15 Metres at Dumbwa Dumbwa drilling has now established strike over nearly 1.5 kilometres
Midnight Sun Intercepts 1.0% Copper Over 22 Metres and
0.98% Copper Over 15 Metres at Dumbwa
Dumbwa drilling has now established strike over nearly 1.5 kilometres
Vancouver, British Columbia, November 18th, 2025 – Midnight Sun Mining Corp.
(TSXV: MMA / OTCQX: MDNGF) (“Midnight Sun” or the “Company”) is pleased to report
assay results from additional holes at the Dumbwa target. Diamond drill hole DBW-
25-009 intercepted 0.98% Cu over 15 metres and 0.79% Cu over 5.25 metres. Hole
DBW-25-010 intercepted 1.0% Cu over 22 metres. Additional significant intercepts
are provided in the table below.
Hole ID From (m) To (m) Interval (m) Cu (%)
DBW-25-006 142 153 11 0.25
and 159 163 4 0.18
and 167 171 4 0.20
DBW-25-009 119.75 125 5.25 0.79
and 155 170 15 0.98
and 178 186 8 0.36
DBW-25-010 45 54 9 0.31
and 101 110 9 0.32
and 117 139 22 1.00
Assay results based on four-acid digest, ICP-OES Finish. Intervals listed are based on drilling intervals
and therefore are considered relative rather than true widths.
Midnight Sun’s COO, Kevin Bonel, states “We continue to deliver rapid progress at
Dumbwa, effectively expanding the strike length, and continuing to refine our
geological model. With nearly 1.5 kilometres of mineralis ed strike defined to-date,
and the full scale of Dumbwa coming sharply into focus, our confidence in the
system’s size , high -grade potential, and significance has never been higher.
Momentum is firmly on our side as we drive aggressively through the remainder of
2025, fully aligned with our goal of systematically delineating the strike potential of
Dumbwa.
To accelerate our exploration , we have expanded our geological team to maximize
core cutting and logging efficiency. With five drill rigs turning, a sixth expected in early
2026, and continuous drilling planned through the rainy season, we are advancing
this discovery with conviction.”
Geologically, Dumbwa continues to bear a strong similarity to Barrick Mining’s
Lumwana Mine. Mineralised host rocks vary from two -mica foliated gneiss to
mineralised biotite-amphibolite schists within a barren banded grey gneiss and pink
gneiss package.
The mineralised trend is strongly orientated north -south and appears to be very
steeply inclined. Drilling has already demonstrated nearly 1.5 k ilometres of
mineralised strike.
The centremost part of the north -south mineralised corridor tends to contain
significant bornite and chalcopyrite. On either side of this north-trending centre, the
mineralisation intensity slowly decreases and becomes more chalcopyrite-
dominated. In addition to bornite -chalcopyrite disseminated mineralisation in the
well-mineralised central zone, there are occasional rich bornite-chalcopyrite-quartz-
feldspar veins that have a significant positive impact on copper grade.
The continued strong coincidence of soil anomaly, induced polarization chargeability
and VTEM geophysics, against a well supported geological and structural model is
allowing precise drill targeting as the mineralised corridor is traced and drill tested
northwards.
Dumbwa Drill Program Update
To date, 51 holes have been completed with 5 holes ongoing and a further 75 holes
called for in the immediate plan to test the mineralised corridor over the next 3
kilometres of strike. This represents approximately 15,000 metres of planned drilling.
In consultation with the drill contractors, Midnight Sun has chosen to maintain
exploration operations through the rainy season, anticipating approximately 90%
productivity (metres per rig per shift) due to expected weather-related delays.
Otherwise, the program is expected to continue without interruption.
Samples from an additional 11 drill holes have been submitted for assay, with the
remaining samples currently being cut and prepared.
Quality Control/Quality Assurance
Drilling was conducted using a conventional diamond drilling rig and drill core was
captured for the entirety of each hole and placed into plastic core trays. All drill holes
were cored in PQ until stable ground was achieved and then reduced to HQ size for
the remainder of each hole. Sampling was based on visible copper mineralization
and sample intervals honoured any important lithological boundaries. Core was then
cut in house using a diamond saw and the right half of core was placed into a 200
micron plastic bag, assigned a unique sample number, and recorded into GeoSpark
logging system. Samples always remained under the supervision of Midnight Sun
staff to maintain chain of custody. All samples were then delivered to SGS Labs
located in Kalulushi, Zambia , a fully accredited laboratory. Once received, the
samples were sorted, dried, crushed, and pulverized (SGS code PRP90) followed
by four-acid digest with ICP-OES finish (SGS Code ICP42S). Copper range of detection
is 0.01-10%. Midnight Sun follows an in -house QA/QC program that consisted of a
random insertion every 10 th sample of either a coarse blank, fine blank, coarse
duplicate, fine duplicate, or Certified Reference Material (standards).
Location of Reported Drill Holes
Hole ID Type XCOORD YCOORD Azimuth Dip EOH (m)
DBW-25-001 Diamond 440375 8627810 90 -70 386.00
DBW-25-002 Diamond 440770 8628758 270 -50 218.50
DBW-25-004R Diamond 440924 8628758 270 -60 223.90
DBW-25-005 Diamond 440435 8627812 90 -60 294.20
DBW-25-006 Diamond 440670 8627812 270 -60 200.65
DBW-25-009 Diamond 440450 8627310 270 -60 260.00
DBW-25-010 Diamond 440300 8627310 90 -50 170.10
Note: Projection: WGS84, Zone 35 South
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
NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT
TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS
RESPONSIBILITY FOR THE 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”,
“expects”, “plans”, “scheduled”, “believed” or “intends” or variations of such words and
phrases or stating that certain actions, events or results “may” or “could”, “would”, “might”
or “will” be taken to occur or be achieved) are not statements of historical fact an d 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 forwar d-
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 forwa rd-looking statements or forward -looking
information contained herein to reflect new events or circumstances, except as may be
required by law.