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Southern Silver Reports 2.8m of 665g/t AgEq and 4.0m of 367g/t AgEq from Underground Channel Sampling at the Puro Corazon Mine

Drill Results Corporate Updates

Southern Silver Reports 2.8m of 665g/t AgEq

and 4.0m of 367g/t AgEq from Underground

Channel Sampling at the Puro Corazon Mine

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 0.5m to 1.0m range and are collected individually for shipment to

the lab. Channel samples were spaced every 3.0 meters and orientated perpendicular to the trend of the

mineralized zone. Geological criteria were used to select sample lengths and to ensure mineralized

skarn is sampled separately from footwall and hangingwall horizons. Other considerations include

mineralized texture (massive sulphide vs banded vs disseminated) and that as much as possible,

mineralization in different rock types (limestone-marble, aplite and monzonite) were sampled separately.

The Puro Corazon Mine has been operated intermittently (semi-continuously) on a small scale (~50-

80tpd) since the 1980s and currently comprises a partially completed spiral decline (Rampa Guadalupe)

and 14 mining levels which extend 220 metres below surface. The mine is accessed by shaft and via the

Rampa Guadalupe.

Additional work undertaken by Southern includes an underground Lidar survey of the workings

(completed earlier this year), geotechnical surveys of the workings and further hydrological

characterization of the area around the Puro Corazon target (in progress).

Figure 1: Plan view of the select channel sampling results in the Rampa Guadalupe/Puro

Corazon workings.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/5344/311907_9599f82d44e71a19_002full.jpg

Figure 2: Plan view of select channel sampling results in the Rampa Guadalupe/Puro Corazon

workings.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/5344/311907_9599f82d44e71a19_003full.jpg

Table 1: Select Assay Results from Underground Channel Sampling at the Puro Corazon Mine

Channel Id

Level

Width m

Ag ppm

Au ppm

Cu %

Pb %

Zn %

AgEq g/t

226

5 GRINGO

2.2

120

0.0

0.0

3.4

2.2

247

234

6 GRINGO

1.0

66

0.0

0.1

2.6

7.0

309

229

6 GRINGO

1.0

276

0.0

0.4

11.3

3.5

615

228

6 GRINGO

0.7

205

0.0

0.7

6.6

10.2

657

93

6 GRINGO

2.4

298

0.1

0.7

1.4

0.1

383

87

6 GRINGO

3.5

28

0.1

0.3

0.3

3.8

157

239

7 GRINGO

3.0

127

0.0

0.7

3.8

3.5

342

86

7 GRINGO

2.7

109

0.0

0.0

2.9

2.0

221

85

7 GRINGO

2.8

289

0.1

0.2

9.6

6.6

665

84

7 GRINGO

4.0

198

0.0

0.0

6.0

1.9

367

7 GRINGO

3.7

211

0.0

0.0

6.4

2.0

391

83

7 GRINGO

4.8

89

0.0

0.1

1.9

0.4

141

82

7 GRINGO

1.1

263

0.0

0.5

7.4

0.4

455

81

7 GRINGO

2.0

193

0.0

0.2

4.9

1.9

353

79

8 GRINGO

1.8

323

0.2

0.7

0.7

0.2

399

77

8 GRINGO

1.2

1057

0.1

0.0

21.0

21.6

2042

76

8 GRINGO

1.1

223

0.0

0.1

3.4

15.1

701

8 GRINGO

0.7

337

0.0

0.2

5.2

22.7

1057

74

8 GRINGO

1.5

162

0.0

0.9

3.5

2.4

356

246

9 GRINGO

2.3

313

0.0

0.1

5.4

4.7

554

19

9 GRINGO

1.1

182

0.0

0.5

6.7

11.0

644

15

9 GRINGO

3.7

91

0.0

0.0

2.0

1.0

160

10

9 GRINGO

2.7

170

0.0

0.2

4.4

0.6

283

4

9 GRINGO

6.1

75

0.0

0.0

0.9

0.7

111

2

9 GRINGO

1.6

201

0.0

0.7

7.8

12.1

724

55

10 CABALLO

3.4

132

0.1

0.2

2.6

1.9

247

69

10 SHAMPO

2.5

127

0.1

0.2

2.9

2.0

250

120

11 TOMAS

4.7

80

0.0

0.3

2.4

3.2

236

11 TOMAS

2.9

100

0.1

0.5

2.8

3.9

294

118

11 TOMAS

1.8

111

0.0

0.1

3.8

5.2

328

117

11 TOMAS

2.6

59

0.0

0.2

2.1

3.1

197

42

12 TOMAS

0.8

322

0.0

1.1

10.3

1.1

625

44

12 TOMAS

3.6

50

0.0

0.1

1.7

2.7

165

44

12 TOMAS

1.6

91

0.0

0.2

3.1

4.4

283

1)

Analyzed by FA/AA for gold and ICP-AES by ALS Laboratories, North Vancouver, BC. Silver (>100ppm), copper, lead and zinc (>1%) overlimits

assayed by ore grade ICP analysis,

2)

High silver overlimits (>1500g/t Ag) and gold overlimits (>10g/t Au) re-assayed with FA-Grav. High Pb (>20%) and Zn (>30%) overlimits assayed

by titration. AgEq and ZnEq were calculated using prices of $2,800/oz Au, $32/oz Ag, $4.50/lb Cu, $0.95/lb Pb and $1.25/lb Zn.

3)

AgEq and ZnEq calculations utilized relative metallurgical recoveries of Au 48.6%, Ag 93%, Cu 70%, Pb 87% and Zn 93%.

4)

Composites are calculated using a 80g/t AgEq cut-off in sulphide and 0.5g/t AuEq in the oxide gold zone. Composites have <20% internal dilution,

except where noted; anomalous intercepts are calculated using a 10g/t AgEq cut-off.

Next Steps

With final assay results having now been received, the Company is incorporating the results of the

recently completed Puro Corazon drilling and underground sampling programs into the much larger

Cerro Las Minitas project, which is expected to significantly enhance both the project economics and

mine plan. Over the coming months, the Company intends to:

Continue a Phase I definition drill program of up to 14,000 metres designed to upgrade resource

categories at the Puro Corazon target.

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 National Instrument 43-101

continue to advance baseline data collection and permit readiness review

The Phase I definition drilling commenced in June 2026. Six core holes totaling 2,194 metres have been

completed to date. Assays are pending.

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,

relatively safe jurisdiction in southeast Durango, Mexico. For more information on the details of the

current economic assessment of the Cerro Las Minitas project please refer to Southern Silver's news

release dated June 10, 2024.

About Southern Silver Exploration Corp.

Southern Silver Exploration Corp. is an exploration and development company with a focus on the

discovery of world-class mineral deposits either directly or through joint-venture relationships in mineral

properties in major jurisdictions. Our 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. We have 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. Our 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.

Robert Macdonald, MSc. P.Geo, is a Qualified Person as defined by National Instrument 43-101 and

supervised directly the collection of the data from the CLM project that is reported in this disclosure. He

is responsible for and approves the presentation of the technical information in this disclosure.

On behalf of the Board of Directors

"Lawrence Page"

Lawrence Page, K.C.

President & Director, Southern Silver Exploration Corp.

For further information, please visit Southern Silver's website at

southernsilverexploration.com

or contact

us at 604.641.2759 or by email at

[email protected]

.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

This news release contains forward-looking statements. Forward-looking statements address future

events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ

materially from those currently anticipated in such statements. Forward-looking statements in this

news release include plans to advance and develop the CLM property including updating the Mineral

Resource Estimate followed by an update of the PEA. These statements are based on a number of

assumptions, including, but not limited to, general economic conditions, interest rates, commodity

markets, regulatory and governmental approvals for the Company's projects, and the availability of

financing for the Company's development projects on reasonable terms.

Factors that could cause

actual results to differ materially from those in forward looking statements include the timing and

receipt of government and regulatory approvals, and continued availability of capital and financing

and general economic, market or business conditions.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/311907