Southern Silver intercepts 2.8m of 757 g/t AgEq at Puro Corazon

Vancouver, British Columbia--(Newsfile Corp. - July 2, 2026) - Southern Silver Exploration Corp. (TSXV: SSV) (the "Company" or "Southern Silver") reports assays from underground channel sampling at the Puro Corazon Mine on the Cerro Las Minitas property which returned multiple intercepts of strongly anomalous polymetallic mineralization. Highlight assays include: 3.0 metres averaging 205g/t Ag, 0.1% Cu, 2.8% Pb and 1.9% Zn (320g/t AgEq) 3.2 metres averaging 357g/t Ag, 0.5% Cu, 3.2%Pb and 0.7% Zn (479g/t AgEq) 2.8 metres averaging 305g/t Ag, 1.2% Cu, 9.8% Pb and 6.7% Zn (757g/t AgEq) 1.0 metres averaging 631g/t Ag, 0.1% Cu, 12.7%Pb and 8.1% Zn (1097g/t AgEq) (1) see AgEq calculation criteria in notes to Table 1. Intervals are reported as estimated true thickness unless otherwise indicated The channel sampling is part of a larger program of underground mapping, sampling and geotechnical analyses designed to better understand the style and distribution of mineralization at the Puro Corazon target and to develop continuity between the near-surface mineralization within the underground workings and mineralization identified in recent drilling at the Puro Corazon target.

Sampling proceeded through fourteen sublevels of the underground workings and a partially completed spiral decline known as the Rampa Guadalupe. Sampling targeted areas of skarn alteration and mineralization adjacent to the Central Intrusion and along mineralized structures out-board of the main contact. A total of 230 channels comprising 1380 individual samples were collected.

Sample intervals in each channel range from 0.15m to 2.0m, with most in the 0.5m to 1.0m range and are collected individually for shipment to the lab. Channel samples are spaced every 3.0 meters and orientated perpendicular to the trend of the mineralized zone. Geological criteria were used to select sampl