LOCATION

The Smart Creek Project is located 100 km southeast of Missoula, Montana and 20 km north from Philipsburg Montana, USA and is accessible year-round via highway and gravel roads (Figure 1).

BACKGROUND

The Smart Creek Copper Porphyry Project, acquired in August 2024, is a joint venture with Rio Tinto, where Rio will retain 40% of the asset. Smart Creek is considered prospective for porphyry copper as well as copper-gold-silver enriched carbonate replacement deposits (CRD).  Rio Tinto drilled 26 of 40 permitted sites over a 2.5 year period vectoring toward a porphyry centre at the Smart Creek target where the best hole returned 109.73 meter @ 0.75% Cu, which included 89 metres of 0.97% Copper (SMCR0022; see NR dated August 20, 2024).

SMART CREEK PROJECT HIGHLIGHTS:

• Extensive high-grade oxide and sulfide copper mineralization across the property. Historical rock samples with copper grades ranging from below detection limits up to 5.64% Cu with historical mining at Smart Creek, Sunrise and at the Henderson Gulch placer mining operations.
• Historic mining of a gold-copper replacement-style mineralization at the past producing Sunrise Mine.
• Preservation of the porphyry-skarn-CRD-epithermal geological environments on the property. Geological mapping demonstrates exotic copper mineralization, high-sulfidation style gold mineralization, skarn/CRD mineralisation exposed at surface, and widespread porphyry-style, mineralization and veins. The property features multiple targets with limited drilling, untested by modern methods.
• A critical mass of exploration data including airborne magnetic/radiometric/Induced polarization geophysical data and historic soil and rock sampling, RC and diamond drilling with significant, untested geochemical anomalies coincident with alteration zones (2).
• Highly reactive host rocks (Helena Formation calcareous metasedimentary rocks and diabase intrusions); porphyry intrusions associated with large alteration footprints at Smart Creek and Sunrise (figures 1-4).

RESULTS OF 2025 FIELD CAMPAIGN

Domestic Metals published the analytical results for 310 surface samples from the 2025 Summer/Fall field campaign. Results highlight several exploration opportunities consisting of porphyry, skarn, CRD and structurally-controlled gold targets.

The program was designed to characterize known mineralized zones, refine drill target locations and identify new areas for follow-up exploration.

Highlight High-Grade Assay Results

• 102 g/t Au (Sample G019007)
• 74.7 g/t Au, 13.8% Cu, 3810 g/t Ag (Sample G019235)
• 30.4 g/t Au (Sample G019001)
• 26.6 g/t Au (Sample G019353)
• 23.1% Cu, 424 g/t Ag (Sample G019225)
• 19.65% Cu, 458 g/t Ag (Sample G019031)
• 19.05% Cu, 582 g/t Ag (Sample G019038)

Detailed results can be found in the news release dated January 8, 2026.

Summary of findings – 2025 Field Campaign

• Domestic completed successful mapping, sampling and prospecting at the Smart Creek Project. The new data will be coupled with a geophysical (MT/IP) program in advance of drilling scheduled for Q1/2026.
• Rock sample assays from outcrops, historic trenching, mines and workings demonstrate high-grade gold, copper, silver and zinc and confirms the project is prospective for porphyry copper deposits, carbonate replacement deposits (“CRD”), skarn and exotic copper deposits.
• 39 samples (out of 310) exceed 0.5 g/t Au, 43 samples (out of 310) exceed 1 % Cu, 35 samples (out of 310) exceed 30 g/t Ag, 31 samples (out of 310) exceed 0.1% Zn.
• All targets (Sunrise Mine, Smart Creek, Radio Tower, Exotic Cu) are significantly expanded based on the results of the 2025 exploration program at the Project.

Target Opportunities​

Smart Creek PCD Target:

Exploration drilling by the previous operators confirmed the presence of poprhry copper mineralization at Smart Creek and identified increasing alteration and mineralization toward the northwest margin of the Smart Creek target which is characterized by 1) significant copper (and molybdenum) soil anomalism, 2) a significant induced polarization chargeability feature where there is a lack of drill testing. Outboard of the chargeability target the host rocks contain strong manganese oxide fracture fill as well as gold arsenic “leakage” geochemistry signatures, consistent with the periphery of porphyry copper systems.

Smart Creek has the potential for high-grade copper and gold due to

1) the volume of reactive carbonate host rocks (Helena Formation)

2) widespread skarn, marble, calc silcate and silica alteration footprints which are consistent with the distal expressions of CRD and porphyry deposits and

3) presence of an unreactive cap rock aquitard unit (Missoula Group).

Cap rocks have the potential to generate high grades in porphyry copper deposits by forcing fluids into more reactive adjacent units. An analogous mineralized system is the Resolution copper deposit (Arizona) where high grade carbonate and diabase host rocks are “super-charged” due to fluid flow channelized by unreactive quartzite. Exploration targets identified by Domestic Copper at the Smart Creek project are untested by historical drilling.

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Exotic Copper Target:

The Smart Creek project is characterized by widespread copper, gold and silver in surface outcrops as well as core and RC drill holes (Figures 1 and 2).  At the Exotic Copper target area in the east part of the land position, malachite and azurite mineralization is strongly developed in in tensely fractured rocks.  The dimensions of the copper oxide body measure 900m by 400m (plan) and up to 75m depth, defined by historic drilling (Figures 1-3).  The direct analogy for the copper footprint at Smart Creek is the recently active Carlota mine in eastern Arizona.

This area is also being evaluated as a sulfide (hypogene copper) target. Alteration of the Helena Formation host rocks includes bleaching, potassic and marble. Vectoring strategies for the porphyry target are currently being deployed by Domestic; these include detailed geological mapping, stable isotope work, as well as evaluation of the leakage geochemical characteristics in the fracture fill oxides.

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Sunrise Porphyry:

The historic Sunrise Mine area is underlain by a large magnetic high feature in addition to discrete chargeability anomalies.  Domestic Metals geologists have recognized the shallow porphyry environment features at Sunrise which are characterized by 1) bleached and marbleized host rocks, 2) widespread porphyry “leakage” elements arsenic, gold and manganese, and 3) mineralized and altered porphyry dikes. The company is expanding the IP coverage to delineate the porphyry target at Sunrise, as well as interpreting the new geochemistry data in this context, to refine drill targets.

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Radio Tower Target:

An additional porphyry copper opportunity has been recognized in the south part of the Sunrise mine area. Domestic Metals’ geologists have recognized intense marble alteration outcropping in an area underlain by anomalous Cu-Mo-Mn in reconnaissance soil data, as well as a strong IP chargeability high in a historic single geophysical reconnaissance line The dimensions of the target are 1000m by 1300m defined by the alteration mapping, IP and limited soil data. The strong marble alteration zone is flanked by more distal dolomite alteration and the entire area is underlain by reactive Helena Formation banded carbonates. The Robinson Mine, in Eastern Nevada is an analogous magmatic-hydrothermal system and contains high-grade ore hosted by chemically reactive carbonate host rocks.

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Sunrise Structurally-Controlled/Epithermal Gold:

Domestic Metals’ geologists have evaluated rocks and historic mine material in the Sunrise Mine area. Alteration is characterized by vuggy silica associated with silicified -clast breccia and strongly sulphidized host rocks. Intense clay, limonite are the products of weathering of the widespread sulfides. Sunrise Mine area is an opportunity to develop targets with gold potential in the shallow porphyry environment, distal to the porphyry centers identified at Smart Creek and Radio Tower. Gold deposits commonly occur in structures and stratigraphic traps within the distal and/or shallow extensions of the porphyry environment.

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Carbonate replacement Targets (2+ target areas):

Widespread marble and skarn alteration is mapped at both Smart Creek and Sunrise. Leakage characteristics in these rocks includes manganese oxides and copper oxides in fracture surfaces cutting the dominant Helena Formation host rocks. This is the distal signature of the CRD clan of deposits which commonly occur in porphyry environments inside the 5km region surrounding the heat and fluid source.

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Notes:

1 Briggs, D.F., 2015, History of the Warren (Bisbee) Mining District.  Arizona Geological Survey Contributed Report CR-15-b, 8 p.

2 Past producing deposits and development projects shown outside of the Smart Creek land position provide geologic context for the Property, but this is not necessarily indicative that the Property hosts similar grades or tonnages of mineralization.