Aston Bay and American West Metals Announce Large-Scale Geophysical Targets Confirmed at the Storm Project, Nunavut, Canada
Aston Bay Holdings (OTCQB:ATBHF) has announced significant findings from their Mobile MagnetoTellurics (MMT) survey at the Storm Copper Project in Nunavut, Canada. The survey has identified multiple large-scale copper exploration targets, including a 16km-long conductive anomaly north of the Cyclone Deposit at approximately 200m depth.
Key discoveries include two additional conductive trends at 400m depth in the Midway and Tornado/Blizzard areas, potentially hosting copper mineralization. The company is progressing with mine permitting through the Nunavut Planning Commission and advancing both Pre-Economic Analysis (PEA) and Pre-Feasibility Study (PFS) workstreams.
Aston Bay maintains a 20% free carried interest in the joint venture with American West Metals (80% partner), which continues until a decision to mine following completion of a bankable feasibility study.
Aston Bay Holdings (OTCQB:ATBHF) ha annunciato risultati rilevanti dal sondaggio Mobile MagnetoTellurics (MMT) presso il progetto Storm Copper in Nunavut, Canada. L’indagine ha individuato più target esplorativi di rame su larga scala, tra cui un’anomalia conduttiva lunga 16 km a nord del deposito Cyclone, estesa fino a circa 200 m di profondità.
Tra le scoperte principali figurano due ulteriori trend conduttivi a 400 m di profondità nelle aree Midway e Tornado/Blizzard, che potrebbero contenere mineralizzazione di rame. La società procede con le autorizzazioni minerarie presso la Nunavut Planning Commission e avanza i lavori sia per l’Analisi Pre-Economica (PEA) sia per lo Studio di Prefattibilità (PFS).
Aston Bay detiene un interesse non diluitivo del 20% nella joint venture con American West Metals (partner all’80%), interesse che rimane valido fino alla decisione di avviare lo sfruttamento dopo il completamento di uno studio di fattibilità finanziabile.
Aston Bay Holdings (OTCQB:ATBHF) ha anunciado hallazgos significativos de su estudio Mobile MagnetoTellurics (MMT) en el proyecto Storm Copper en Nunavut, Canadá. La encuesta identificó múltiples objetivos de exploración de cobre a gran escala, incluido una anomalía conductora de 16 km de longitud al norte del depósito Cyclone, aproximadamente a 200 m de profundidad.
Los descubrimientos clave incluyen dos tendencias conductoras adicionales a 400 m de profundidad en las zonas Midway y Tornado/Blizzard, que podrían alojar mineralización de cobre. La compañía avanza en los permisos mineros ante la Nunavut Planning Commission y continúa con las labores para el Análisis Pre-Económico (PEA) y el Estudio de Prefactibilidad (PFS).
Aston Bay mantiene un 20% de interés libre en la empresa conjunta con American West Metals (socio con el 80%), interés que se mantiene hasta la decisión de explotar tras la finalización de un estudio de factibilidad bancable.
Aston Bay Holdings (OTCQB:ATBHF)는 캐나다 누나부트의 Storm Copper 프로젝트에서 실시한 모바일 자기전기(MMT) 조사에서 중요한 성과를 발표했습니다. 조사 결과 여러 대규모 구리 탐사 타깃이 확인되었으며, 그중에는 Cyclone 광상 북쪽 약 200m 깊이에서 연장되는 길이 16km의 전도성 이상구간이 포함됩니다.
주요 발견으로는 Midway 및 Tornado/Blizzard 지역에서 깊이 400m에 위치한 두 개의 추가 전도성 경향이 확인되었으며, 이들 지역은 구리 광화대를 포함할 가능성이 있습니다. 회사는 Nunavut Planning Commission을 통해 광산 허가 절차를 진행 중이며, 사전 경제성 분석(PEA)과 예비 타당성 조사(PFS) 작업도 병행하고 있습니다.
Aston Bay는 American West Metals(지분 80%)와의 합작 투자에서 20% 무상 지분(프리캐리드 지분)을 보유하고 있으며, 이는 은행성 타당성 조사 완료 후 채굴 결정 시까지 유지됩니다.
Aston Bay Holdings (OTCQB:ATBHF) a annoncé des résultats significatifs de son enquête Mobile MagnetoTellurics (MMT) sur le projet Storm Copper au Nunavut, Canada. L’étude a identifié plusieurs cibles d’exploration du cuivre à grande échelle, notamment une anomalie conductrice de 16 km de long au nord du gisement Cyclone à environ 200 m de profondeur.
Parmi les découvertes clés figurent deux tendances conductrices supplémentaires à 400 m de profondeur dans les secteurs Midway et Tornado/Blizzard, susceptibles d’héberger une minéralisation en cuivre. La société progresse dans les démarches d’autorisation minière auprès de la Nunavut Planning Commission et avance les travaux de l’Analyse Pré-économique (PEA) et de l’Étude de Pré-faisabilité (PFS).
Aston Bay conserve un intérêt gratuit porté de 20% dans la coentreprise avec American West Metals (partenaire à 80%), intérêt qui reste en vigueur jusqu’à la décision d’exploiter après l’achèvement d’une étude de faisabilité bancable.
Aston Bay Holdings (OTCQB:ATBHF) hat bedeutende Ergebnisse aus ihrer Mobile Magnetotellurik (MMT)-Untersuchung beim Storm Copper-Projekt in Nunavut, Kanada, bekannt gegeben. Die Untersuchung identifizierte mehrere großflächige Kupfer-Explorationsziele, darunter eine 16 km lange Leitfähigkeitsanomalie nördlich des Cyclone-Deposits in etwa 200 m Tiefe.
Zu den wichtigsten Entdeckungen zählen zwei weitere leitfähige Trendentwicklungen in 400 m Tiefe in den Bereichen Midway und Tornado/Blizzard, die potenziell Kupfermineralisierung beherbergen könnten. Das Unternehmen schreitet bei der Bergbaumengenehmigung über die Nunavut Planning Commission voran und arbeitet parallel an der Pre-Economic Analysis (PEA) und der Pre-Feasibility Study (PFS).
Aston Bay hält ein 20% Free-Carried-Interest im Joint Venture mit American West Metals (80% Partner), das bis zur Bergbaubeschlussfassung nach Abschluss einer bankfähigen Machbarkeitsstudie fortbesteht.
- Multiple large copper targets identified through MMT survey, including a 16km-long conductive anomaly
- Geophysical technique validated through confirmation of existing Cyclone Deposit signature
- Mine permitting and economic studies (PEA/PFS) advancing steadily
- Free carried interest maintained until mining decision, reducing financial burden
- Targets require drilling confirmation to verify copper mineralization
- Deep mineralization at 400m depth may increase mining complexity and costs
- Project located in remote Nunavut region, presenting logistical challenges
Final MMT survey results identify pipeline of high-priority copper exploration targets
Highlights:
Multiple large copper targets confirmed with geophysics. The final results and 3D inversion for the airborne Mobile MagnetoTellurics ("MMT") survey along the Midway-Storm-Tornado corridor have been received, and highlights include;
A large conductive anomaly with a strike of more than 16km located to the north of the Cyclone Deposit and at approximately 200 metres ("m") average depth - this feature is interpreted to be contained within the Allen Bay Formation, previously confirmed by drilling at Storm to be the main host of copper sulphide mineralization in the project area
A large, stratiform conductive anomaly also to the north of the Cyclone Deposit at an interpreted 400m average depth is interpreted to represent the deeper copper horizon at Storm, where deep diamond drilling has already discovered copper sulphides across an area spanning 10 sq km
Two additional, discordant conductive trends have been confirmed at approximately 400m depth in the Midway and Tornado/Blizzard areas, with the potential to host copper mineralization, supported by mapping and sampling in the area, which has identified outcropping copper sulphides
Validation of geophysics results. The large, shallow, and flat-lying Cyclone Deposit has a distinct response in the new MMT survey data, confirming the effectiveness of this geophysical technique to detect copper sulphide mineralization at the Storm Project, and giving more weight to the potential of the new targets to potentially represent additional copper mineralization.
Mine permitting progresses: Engagement with the Nunavut Planning Commission (NPC) continues regarding key permitting applications, including the 'proposed mine development and early-works permit' to facilitate pre-development works for the potential mining operation.
Pre-Economic Analysis ("PEA") and Pre-Feasibility Study ("PFS") advances: Workstreams for completion of the PEA and PFS continue with final reports on field activities being compiled and financial modelling for a potential mining operation being optimized.
TORONTO, ON / ACCESS Newswire / September 10, 2025 / Aston Bay Holdings Ltd. (TSXV:BAY)(OTCQB:ATBHF) ("Aston Bay" or the "Company") is pleased to provide the final MMT geophysical survey results conducted at the Storm Copper Project ("Storm" or the "Project") on Somerset Island, Nunavut. American West Metals Limited ("American West"), the Project operator, is conducting the exploration program. Aston Bay and American West have formed a 20/80 unincorporated joint venture with respect to the Storm Project property, with Aston Bay maintaining a free carried interest until a decision to mine is made upon completion of a bankable feasibility study.
Thomas Ullrich, Chief Executive Officer of Aston Bay,commented:
"We are excited to report these new conductive anomalies from this season's MMT geophysical survey at Storm. The anomalies are large and hosted within favourable stratigraphic and structural horizons, fitting well with our geologic model. The conductivity of the anomalies is similar to that of the high-grade zones within the Cyclone Deposit, suggesting that these new anomalies may be associated with copper sulphide mineralization.
"We continue to work with our partners American West on refining the targeting for future drill targets and look forward to providing further updates on results from the 2025 program.
"As well, we are encouraged by the steady progress of permitting and economic and feasibility study work for development at Storm. These steps are critical in advancing Storm toward a prospective mining operation, and we are pleased with the momentum to date.
"Copper remains one of the most compelling investment themes, with structural supply deficits expected to widen as demand accelerates from electrification, renewable energy, and infrastructure growth. With few new copper projects advancing at scale, we believe Storm is well-positioned to deliver meaningful value and provide investors with direct leverage to a strengthening copper cycle."

Figure 1: Phase 1 MMT Imagery (Total apparent conductivity) overlaying copper deposit outlines, major faults, and aerial photography.
MOBILE MAGNETOTELLURICS (MMT) SURVEY
The MMT survey completed along the Midway-Storm-Tornado corridor comprised approximately 1,320 line/km (Figure 1), and the final modelling of the data, including inversion slices, has now been received.
MMT utilizes natural source energy to capture a broader range of EM frequencies than the techniques used at Storm previously. The survey is designed to highlight more subtle/relative contrasts between the host rocks and potential accumulations of conductive material (i.e. metalliferous sulphide) with improved spatial and depth resolution. This is potentially very useful in delineating deeper (>200m) occurrences of copper sulphide at Storm, where the resistive host rocks cause a decreased signal-to-noise ratio (and decreased confidence in interpretation) with depth in the historical geophysics.
Conventional EM surveys at Storm have effectively identified the near-surface high-grade copper deposits. The MMT survey complements these earlier surveys with its greater penetration at depth.
MMT INVERSION DATA AND RESULTS
Interpretation of the MMT data has confirmed the preliminary data, redefined several conductive trends, and identified a number of new anomalies at different depths that have the potential to be related to copper sulphide mineralization (see ASX announcement dated 10th July 2025: Large-scale copper potential reaffirmed by new drilling and geophysics at the Storm Copper Project, Canada).
One of these anomalies (Anomaly A1) is related to known shallow higher-grade copper sulphides at the Cyclone Deposit, and confirms the geophysical technique's ability to image this mineralization style. The MMT geophysical technique is regarded as reliable for detecting copper mineralization grading approximately
The depth slices have confirmed a 16km long conductive feature to the north of the Cyclone Deposit, located at approximately 150-250m depth (Target A8 - Figure 2). This feature is interpreted to be contained within the flat-lying stratigraphy of the Allen Bay, the primary host of the copper mineralization in the project area. The conductive feature notably contains discrete areas of higher conductivity, some adjacent to the graben faults, which could represent accumulations of copper sulphides (Figure 1). These anomalies are ranked as high-priority drilling targets.
Target A8 continues to approximately 400m depth as represented in Figure 3. This may correspond to the deeper copper horizon previously identified with diamond drilling.
Target A4 is a conductive body up to 3km long, sub-parallel to the graben and modelled from 150m depth (Figure 3). This anomaly is ranked highly due to its proximity to the fault, similar to the Cyclone Deposit.
At approximately 400m depth, two conductive features (Targets A2/A5) cross-cut the main E-W trend of the graben fault network and are strongest in the Midway and Tornado/Blizzard areas (Figure 3). The orientations of these anomalies strongly match the orientation of localized faulting, which are known conduits of copper mineralization within the project area - as confirmed with mapping and sampling; see ASX announcement dated 23 July 2025: Extensive Copper Defined by Regional Exploration. The high conductivity of these anomalies and proximity to known copper sulphides confirm these as key exploration targets. The modelled depth of the MMT anomalies is below the current extent of drilling in the area.
Further analysis and interpretation of the MMT data will be incorporated into a regional-scale data compilation and structural interpretation for the Storm project area.
The new geophysical targets will be prioritized for drilling in the next exploration drill program at the Storm Project.

Figure 2: Phase 1 MMT inversion data sliced at approximately 150m vertical depth, overlaying copper deposit outlines, major faults, and aerial photography.

Figure 3: Phase 1 MMT inversion data sliced at approximately 400m vertical depth, overlaying copper deposit outlines, major faults, and aerial photography. The discordant conductive trends are highlighted with white dotted outlines.

Figure 4: Project claim boundary and prospect location map, illustrating the interpreted extent of the prospective copper and zinc stratigraphic horizons at the Storm Project.
Qualified Person
Michael Dufresne, M.Sc., P.Geol., P.Geo., is a Non-Independent Qualified Person as defined by the NI 43-101 Standards of Disclosure for Mineral Projects and has reviewed and approved the scientific and technical information in this press release.
About Aston Bay Holdings
Aston Bay is a publicly traded mineral exploration company exploring for high-grade critical and precious metal deposits in North America. The Company is exploring the Storm Copper Property and Cu-Ag-Zn-Co Epworth Property in Nunavut.
The Company and its joint venture partners, American West Metals Limited and its wholly-owned subsidiary, Tornado Metals Ltd. (collectively, "American West"), have formed a 20/80 unincorporated joint venture in respect of the Storm Project property, which hosts the Storm Copper Project and the Seal Zinc Deposit. Under the unincorporated joint venture, Aston Bay shall have a free carried interest until American West has made a decision to mine upon completion of a bankable feasibility study, meaning American West will be solely responsible for funding the joint venture until such a decision is made. After such a decision, Aston Bay will be diluted in the event it does not elect to contribute its proportionate share, and its interest in the Storm Project property will be converted into a
FORWARD-LOOKING STATEMENTS
Statements made in this news release, including those regarding entering into the joint venture and each party's interest in the Project pursuant to the agreement in respect of the joint venture, management objectives, forecasts, estimates, expectations, or predictions of the future may constitute "forward-looking statement", which can be identified by the use of conditional or future tenses or by the use of such verbs as "believe", "expect", "may", "will", "should", "estimate", "anticipate", "project", "plan", and words of similar import, including variations thereof and negative forms. This press release contains forward-looking statements that reflect, as of the date of this press release, Aston Bay's expectations, estimates and projections about its operations, the mining industry and the economic environment in which it operates. Statements in this press release that are not supported by historical fact are forward-looking statements, meaning they involve risk, uncertainty and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. Although Aston Bay believes that the assumptions inherent in the forward-looking statements are reasonable, undue reliance should not be placed on these statements, which apply only at the time of writing of this press release. Aston Bay disclaims any intention or obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except to the extent required by securities legislation.
Neither TSX Venture Exchange nor its regulation services provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.
For more information contact:
Thomas Ullrich, Chief Executive Officer
thomas.ullrich@astonbayholdings.com
(416) 456-3516
Sofia Harquail, IR and Corporate Development
sofia.harquail@astonbayholdings.com
(647) 821-1337
SOURCE: Aston Bay Holdings Ltd.
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