Southern Silver drills 6.3 metres of 874 g/t AgEq at Cerro Las Minitas Project, Durango, México

Southern Silver Exploration Corp. [TSXV: SSV] reports additional assays from drilling which further extend mineralization on the Puro Corazon claim, Cerro Las Minitas Project, Mexico, and continues to identify thick intervals of high-grade and strongly silver-enriched polymetallic mineralization.

This current update includes results from five new core holes from the 2025-26 drill program and an extension of a single hole, originally collared in 2012. The highlight assays include bonanza-grade mineralization from a hangingwall zone that correlates with mineralization in the Blind Zone deposit outside of the Puro Corazon claim and returned a 6.3-metre interval averaging 395 g/t Ag, 0.8% Cu, 6.8% Pb and 10.8% Zn (874 g/t AgEq), including a 1.5-metre interval averaging 886g/t Ag, 0.8% Cu, 16.3% Pb and 30.2% Zn (2062 g/t AgEq) from drillhole 26CLM-217.

Additional highlights include results from holes which tested the Puro Corazon skarn and returned a 12.0-metre interval averaging 138 g/t Ag, 0.1 g/t Au, 2.0% Pb and 1.6% Zn (225 g/t AgEq), including a 3.3-metre interval averaging 173 g/t Ag, 0.1 g/t Au, 4.8% Pb and 5.2% Zn (414 g/t AgEq) from drillhole 26CLM-42A; and a 3.5-metre interval averaging 111 g/t Ag, 0.6% Cu, 4.7% Pb and 8.8% Zn (484 g/t AgEq), including a 1.2-metre interval averaging 142 g/t Ag, 0.9% Cu, 7.2% Pb and 18.0% Zn (827g/t AgEq) from drillhole 26CLM-220. Intervals are reported as estimated true thickness unless otherwise indicated.

Mineralization in these holes is localized within the skarn-altered halo immediately adjacent to the central intrusion or alternatively, form carbonate replacement zones, further out-board from the intrusive body at the skarn / marble transition. Drilling continues to confirm the continuity of the mineralization which has now been tested to depths of over 500 metres below surface.

All 23 of the planned holes are now complete and drill crews have been demobilized from the property. Analyses from 20 drill holes have been reported with further assays, including those from underground sampling of the historic Puro Corazon workings, anticipated over the coming weeks.

The company is planning to incorporate the results of the Puro Corazon drilling program into the much larger Cerro Las Minitas project which is expected to significantly enhance the project economics and the mine plan. Final assays are anticipated to be received by the end of the first quarter of 2026, after which the company intends to update the Mineral Resource Estimate of the Cerro Las Minitas project; followed by an update of the Preliminary economic Assessment (PEA) of the project in accordance with the provisions of NI 43-101 standards and continue to advance baseline data collection and permit readiness review.

The company reports that work on the Cerro Las Minitas project continues advancing numerous upside opportunities identified subsequent to the July 2024 PEA, while also derisking and advancing the project with the commencement of baseline data collection, hydrology, geotechnical, archaeological and land surveys and studies.

As currently modelled, the Cerro Las Minitas project features a large-scale underground mining operation with robust project economics and high gross revenues in a well located and mining friendly jurisdiction in southeast Durango, Mexico.

Southern specific emphasis is the 100%-owned Cerro Las Minitas silver-lead-zinc project located in the heart of Mexico’s Faja de Plata, which hosts multiple world-class mineral deposits such as Penasquito, Los Gatos, San Martin, Naica and Pitarrilla.

The company has assembled a team of highly experienced technical, operational and transactional professionals to support our exploration efforts in developing the Cerro Las Minitas project into a premier, high-grade, silver-lead-zinc mine. Located in the same State as the Cerro Las Minitas property is the newly acquired Nazas, gold-silver property. The company’s property portfolio also includes the Oro porphyry copper-gold project and the Hermanas gold-silver vein project where permitting applications for the conduct of a drill program is underway, both located in southern New Mexico, USA.