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Montero Mining (OTC: MXTRF) commenced initial drilling at the Elvira Gold Project in Chile. A first-pass program of four holes totaling about 2,025 metres will test integrated geological, geochemical, and geophysical targets linking a shallow epithermal gold system to a potential deeper porphyry Cu-Au domain.
Priority hole MON-ELV-01 targets a strong chargeability anomaly beneath historical hole EL-12, which intersected 4 m @ 4.9 g/t Au, including 17.85 g/t Au. Qualified Persons have reviewed the technical information, and historical results may not match current reporting standards.
Montero Mining (OTC: MXTRF) defined an initial first-pass drill program at its Elvira Gold Project in Chile’s Maricunga Belt. The Phase 1 program comprises four core holes totaling about 2,025 metres, targeting a vertically zoned system interpreted as high-sulphidation epithermal gold overlying deeper porphyry Cu-Au mineralization.
Drilling will test chargeability and resistivity anomalies linked to historical gold, copper, silver and zinc intervals, with ongoing geological and geochemical assessment guiding subsequent holes.
Montero (OTC: MXTRF) commented on a Chilean government bill submitted on May 18, 2026 to amend the Mining Code and concession fee regime. Proposed changes aim to simplify and expand access to reduced fees, especially for exploration and development projects, and broaden what qualifies as mining work.
Montero Mining (OTC: MXTRF) has begun mobilisation and operational preparations for a Phase 1 diamond drill program at the Elvira gold project in Chile’s Maricunga Belt, scheduled to start in the third week of May 2026.
The program will include four diamond drill holes totalling 1,500–2,000 metres, with hole depths of about 350–650 metres. Road upgrades, camp, core facilities, teams, and environmental and safety procedures are largely complete, and all required authorisations have been obtained.
Montero (OTC: MXTRF) reported independent geochemical vector modelling that identifies two coherent deep porphyry-style targets beneath the central Elvira alteration system in Chile's Maricunga Belt.
The modelling, using 38 rock samples and two industry zonation models (Cohen 2011; Halley 2015), yielded a high-confidence target with the highest score ~1.5 km below surface and a spatially related deeper target. Results will guide further sampling, 3D modelling and drill prioritization.
Montero (OTC: MXTRF) reported geochemical results from the Elvira gold project, Maricunga Belt, Chile, based on 85 samples collected in Oct–Dec 2025. Results show widespread arsenic enrichment and localized molybdenum anomalism, consistent with a vertically zoned epithermal–porphyry hydrothermal system.
The company will integrate these datasets with AI-assisted modelling, geophysics and structural interpretation to refine 3D exploration vectors and prioritize potential drill targets.
Montero (OTC: MXTRF) reports integrated geological, geochemical and geophysical interpretation at the Elvira gold project, identifying a district-scale high-sulphidation hydrothermal system across several kilometres. Key outcomes include structurally controlled alteration centres, resistivity domains and chargeability anomalies up to ~25 mV/V, and priority targets for follow-up and potential drill testing.
Field mapping defines a Western Target (>800 m) and an Eastern Target, while IP and magnetic surveys delineate a prospective exploration corridor ~700 x 600 m for further evaluation.
Montero (OTC: MXTRF) completed a detailed exploration program at the Potrero gold project in Chile's Maricunga Belt on March 9, 2026. Work included compilation of historical data, reprocessing of ~189 line-km magnetic data, ~28 line-km IP/resistivity surveying, high-resolution geochemical sampling and AI-assisted modelling to refine drill targets.
Montero Mining and Exploration (OTC: MXTRF) completed a comprehensive exploration program at the Elvira gold project in Chile's Maricunga Belt on March 2, 2026. Work included data compilation, 205 line-km ground magnetics, 19.2 line-km IP/resistivity, 1:10,000 mapping and high-resolution geochemistry.
The company is integrating datasets with AI/machine learning to refine 3D models and prioritize drill targets; no mineral resources or reserves have been defined to date.