Southern Silver intercepts 2.8m of 665g/t AgEq at Puro Corazon

Vancouver, British Columbia--(Newsfile Corp. - August 31, 2026) - Southern Silver Exploration Corp. (TSXV: SSV) (the "Company" or "Southern Silver") reports additional 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:

2.3 metres averaging 313g/t Ag, 0.1% Cu, 5.4%Pb and 4.7% Zn (554g/t AgEq)

2.8 metres averaging 289g/t Ag, 0.2% Cu, 9.6% Pb and 6.6% Zn (665g/t AgEq)

1.2 metres averaging 1057g/t Ag, 21.0%Pb and21.6% Zn (2042g/t AgEq)

4.0 metres averaging 198/t Ag, 6.0% Pb and 1.9% Zn (367g/t AgEq)

(1) see AgEq calculation criteria in notes to Table 1. Intervals are reported as estimated true thickness unless otherwise indicated

The channel assays reported here were collected from sub-levels 5 to 14 in the Puro Corazon Mine. Sampling targeted areas of skarn alteration and mineralization adjacent to the Central Intrusion and in mineralized zones located out-board of the main contact. In many instances, samples were collected adjacent to wider mined-out stopes which are now inaccessible but would have been the primary targets of the artisanal miners and therefore current sampling may not reflect the true thickness or grades of the historically mined material.

The channel sampling was 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.

A total of 230 channels comprising 1,380 individual samples were collected. Sample intervals range from 0.15m to 2.0m, with most in the