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Midnight Sun Announces Phase-One Dumbwa IP Results

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Midnight Sun Mining (OTC:MDNGF) has completed phase one of a 56 line-kilometre dipole-dipole induced polarization (IP) survey at its Dumbwa Target within the Solwezi Project in Zambia. The initial phase covered 11.5 kilometres of strike length with 500-250 metre east-west oriented line spacings.

The IP survey results have successfully correlated with previous drill-identified mineralization and provided detailed visual interpretation of mineralized horizons. The survey revealed varying structural architecture, from flat-lying to tightly folded horizons, and identified major cross-cutting structures explaining offset between historical soil geochemistry and previous drilling.

Based on these findings, the company plans to commence a diamond drill program along the southern 11.5-kilometer strike length in approximately two weeks. The technical team will use the IP survey results to optimize drill placement and further validate their geological interpretations.

Midnight Sun Mining (OTC:MDNGF) ha completato la prima fase di un'indagine di polarizzazione indotta dipolo-dipolo (IP) lunga 56 chilometri di linea presso il suo obiettivo Dumbwa all'interno del progetto Solwezi in Zambia. La fase iniziale ha coperto 11,5 chilometri di lunghezza di traccia con spazi tra le linee orientate est-ovest da 500 a 250 metri.

I risultati dell'indagine IP hanno confermato con successo la mineralizzazione precedentemente individuata tramite perforazioni e hanno fornito un'interpretazione visiva dettagliata degli orizzonti mineralizzati. L'indagine ha rivelato una struttura variabile, da orizzonti pianeggianti a pieghe strette, identificando inoltre importanti strutture trasversali che spiegano lo scostamento tra la geochimica del suolo storica e le perforazioni precedenti.

In base a questi risultati, la società prevede di iniziare un programma di perforazione diamantata lungo i 11,5 chilometri di traccia meridionale entro circa due settimane. Il team tecnico utilizzerà i dati dell'indagine IP per ottimizzare la posizione delle perforazioni e convalidare ulteriormente le interpretazioni geologiche.

Midnight Sun Mining (OTC:MDNGF) ha completado la primera fase de una encuesta de polarización inducida dipolo-dipolo (IP) de 56 kilómetros de línea en su objetivo Dumbwa dentro del Proyecto Solwezi en Zambia. La fase inicial cubrió 11,5 kilómetros de longitud de traza con espacios entre líneas orientados de este a oeste de 500 a 250 metros.

Los resultados de la encuesta IP se correlacionaron con éxito con la mineralización identificada previamente mediante perforaciones y proporcionaron una interpretación visual detallada de los horizontes mineralizados. La encuesta reveló una arquitectura estructural variable, desde horizontes planos hasta plegados estrechos, e identificó estructuras transversales importantes que explican el desplazamiento entre la geoquímica histórica del suelo y las perforaciones anteriores.

Basándose en estos hallazgos, la empresa planea iniciar un programa de perforación diamantina a lo largo de los 11,5 kilómetros de traza del sur en aproximadamente dos semanas. El equipo técnico usará los resultados de la encuesta IP para optimizar la ubicación de las perforaciones y validar aún más sus interpretaciones geológicas.

Midnight Sun Mining (OTC:MDNGF)는 잠비아 솔즈웨이 프로젝트 내 Dumbwa 타겟에서 56km 길이의 쌍극자-쌍극자 유도 분극(IP) 조사의 1단계를 완료했습니다. 초기 단계에서는 11.5km의 주향을 동서 방향으로 500~250m 간격의 선으로 조사했습니다.

IP 조사 결과는 이전 시추로 확인된 광물화와 성공적으로 연관되었으며, 광물화된 지층에 대한 상세한 시각적 해석을 제공했습니다. 조사는 평탄한 지층부터 강하게 접힌 지층까지 다양한 구조 양상을 드러냈으며, 역사적 토양 지구화학과 이전 시추 간의 차이를 설명하는 주요 횡단 구조도 확인했습니다.

이 결과를 바탕으로 회사는 약 2주 후에 남쪽 11.5km 주향을 따라 다이아몬드 시추 프로그램을 시작할 계획입니다. 기술팀은 IP 조사 결과를 활용해 시추 위치를 최적화하고 지질 해석을 추가로 검증할 예정입니다.

Midnight Sun Mining (OTC:MDNGF) a achevé la première phase d'une enquête de polarisation induite dipôle-dipôle (IP) de 56 kilomètres de ligne sur sa cible Dumbwa dans le cadre du projet Solwezi en Zambie. La phase initiale a couvert 11,5 kilomètres de longueur de tracé avec des espacements de lignes orientés est-ouest de 500 à 250 mètres.

Les résultats de l'enquête IP ont été corrélés avec succès à la minéralisation identifiée précédemment par forage et ont fourni une interprétation visuelle détaillée des horizons minéralisés. L'enquête a révélé une architecture structurelle variable, allant d'horizons plats à des plis serrés, et a identifié d'importantes structures transversales expliquant le décalage entre la géochimie historique des sols et les forages antérieurs.

Sur la base de ces résultats, la société prévoit de lancer un programme de forage diamanté le long des 11,5 kilomètres de tracé sud dans environ deux semaines. L'équipe technique utilisera les résultats de l'enquête IP pour optimiser le positionnement des forages et valider davantage leurs interprétations géologiques.

Midnight Sun Mining (OTC:MDNGF) hat die erste Phase einer 56 Kilometer langen Dipol-Dipol-Induzierte Polarisation (IP)-Untersuchung an seinem Dumbwa-Ziel im Solwezi-Projekt in Sambia abgeschlossen. Die erste Phase umfasste 11,5 Kilometer Streckenlänge mit Linienabständen von 500 bis 250 Metern in Ost-West-Richtung.

Die IP-Untersuchungsergebnisse korrelierten erfolgreich mit zuvor durch Bohrungen identifizierter Mineralisierung und lieferten eine detaillierte visuelle Interpretation der mineralisierten Horizonte. Die Untersuchung zeigte eine variable Strukturarchitektur von flach liegenden bis stark gefalteten Horizonten und identifizierte bedeutende querverlaufende Strukturen, die die Verschiebung zwischen historischer Boden-Geochemie und früheren Bohrungen erklären.

Auf Basis dieser Erkenntnisse plant das Unternehmen, in etwa zwei Wochen ein Diamantbohrprogramm entlang der südlichen 11,5 Kilometer Streckenlänge zu starten. Das technische Team wird die IP-Ergebnisse nutzen, um die Bohrstandorte zu optimieren und ihre geologischen Interpretationen weiter zu validieren.

Positive
  • Strong correlation between IP results and previously identified mineralized zones
  • Survey successfully mapped structural architecture of Dumbwa Target
  • IP results enable more precise and systematic drill targeting
  • Diamond drill program scheduled to commence within two weeks
Negative
  • None.

Interpretation of results from the initial phase of dipole-dipole IP over Dumbwa Soil Anomaly generates refined targets - drill program to commence

Vancouver, British Columbia--(Newsfile Corp. - July 17, 2025) - Midnight Sun Mining Corp. (TSXV: MMA) (OTC Pink: MDNGF) ("Midnight Sun" or the "Company") is pleased to announce the completion of phase one of the 56 line-kilometre dipole-dipole induced polarization survey ("IP Survey") on its Dumbwa Target at the Company's Solwezi Project in Zambia. This first phase of the IP survey covered a total of 11.5 kilometres of strike length at 500 metre to 250 metre east-west oriented line spacings, over the southern portion of the north-south trending Dumbwa geochemical copper anomaly.

The IP Results correlate with previous drill-identified mineralization, within the geochemical anomaly. For the first time, this provides Midnight Sun's technical team with a detailed visual interpretation of the mineralized horizons which comprise the Dumbwa Target. The results of this phase of the IP Survey will drive placement of drill locations for the upcoming Dumbwa Drill Program.

Midnight Sun's COO, Kevin Bonel, states: "In alignment with our methodical and phased strategy for advancing targets, we have now successfully completed the initial phase of the IP survey at our flagship Dumbwa Target. The results have exceeded expectations, with the survey achieving its intended objectives, both enhancing our geological understanding of the target area, and enabling the development of a more refined, precise, and systematic approach to drill targeting. The insights gained represent tremendous value to this emerging story and a significant step forward in the progression of Dumbwa. We are now well positioned to advance to the drilling stage, where we aim to validate our interpretations and further unlock the potential of this highly prospective copper target."

IP Results Explained:

The initial phase of the dipole-dipole IP survey, covering the southern 11.5 kilometres of strike extent, has illustrated the structural architecture of the Dumbwa Target which is pivotal in understanding the geometry of the target. The resulting interpretation of the IP results have revealed a horizon that varies from quite flat lying and gently sloping, while other areas show convincing evidence for folding from open folds to very tight upright folds.

A strong correlation exists between mineralized intervals intercepted in previous drilling at Dumbwa and the interpreted target horizon derived from the IP survey. Additionally, a positive correlation has been identified between the target horizon and the overlying soil anomaly. The IP survey also identified several major cross-cutting structures that help explain the offset between historical soil geochemistry and previously drilled mineralization.

Dumbwa Drill Plans:

With an understanding of the geometry of the target horizon at Dumbwa, Midnight Sun has commenced planning an initial diamond drill program along the southern 11.5-kilometer strike length of the Dumbwa Target. The drill program is scheduled to commence in approximately two weeks' time.

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.

*Graphics provided below:

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Figure 1 Description: Dumbwa Exploration Licence showing location of recently completed IP survey over top of historical copper in soils geochemical trend.

To view an enhanced version of this graphic, please visit:
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Figure 2 Description: Oblique view of cross sectional IP Chargeability results. Note: warm colours denote chargeability highs and are interpreted as the mineralized target horizon. Chargeability identifies how well the ground reacts when a current is applied through it. Areas with high chargeability are exploration targets and these areas also coincide with mineralized intercepts observed in historic drilling.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/2553/259085_056b4acf54e4da68_002full.jpg

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Figure 3 Description: Oblique view of cross sectional IP Resistivity results. Note: cool colours denote resistivity highs which are the typical exploration target for disseminated sulphides in crystalline basement rocks as seen in Dumbwa. These Resistivity highs have also been correlated to disseminated copper mineralization by the historic drill intercepts.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/2553/259085_056b4acf54e4da68_003full.jpg

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Figure 4 Description: IP Chargeability depth slices created by combining all geophysical line data and viewing at a specific depth level shown in metres above sea level. Depth slices of 1,025m, 1,100m, 1,150m, 1,200m, 1,250m, and 1,300m are shown with superimposed copper in soils contours.

To view an enhanced version of this graphic, please visit:
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Cannot view this image? Visit: https://images.newsfilecorp.com/files/2553/259085_056b4acf54e4da68_005.jpg

Figure 5 Description: IP Resistivity depth slices created by combining all geophysical line data and viewing at a specific depth level shown in metres above sea level. Depth slices of 1,025m, 1,100m, 1,150m, 1,200m, 1,250m, and 1,300m are shown with superimposed copper in soils.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/2553/259085_056b4acf54e4da68_005full.jpg

Video 1: Graphics animation

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
Director of Marketing and Communications
Tel: +1 604 809 6890
Em: adrian@midnightsunmining.com

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", "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 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. 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.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/259085

FAQ

What are the key findings from Midnight Sun Mining's (MDNGF) IP survey at Dumbwa Target?

The IP survey revealed varying structural architecture from flat-lying to tightly folded horizons, showed strong correlation with previous drill-identified mineralization, and identified major cross-cutting structures that explain historical offset patterns.

When will Midnight Sun Mining (MDNGF) begin drilling at the Dumbwa Target?

The company plans to commence a diamond drill program in approximately two weeks along the southern 11.5-kilometer strike length of the Dumbwa Target.

What is the scope of Midnight Sun Mining's IP survey at Dumbwa?

The first phase of the IP survey covered 11.5 kilometres of strike length with 500-250 metre east-west oriented line spacings, part of a larger 56 line-kilometre survey plan.

How will the IP survey results impact Midnight Sun Mining's exploration strategy?

The IP results will drive precise placement of drill locations for the upcoming Dumbwa Drill Program and have provided the technical team with detailed visual interpretation of mineralized horizons for more targeted exploration.

What correlation did Midnight Sun Mining find between IP results and previous exploration?

The company found strong correlation between mineralized intervals from previous drilling and the interpreted target horizon from the IP survey, plus positive correlation between the target horizon and overlying soil anomaly.
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