SSV.V · 2026-09-21 12:00:00

Southern Silver Intersects 35.0 Metres Averaging 188g/t Ag, 4.9% Pb and 4.6% Zn (399g/t AgEq) at Cerro Las Minitas Project, Durango, Mexico

Drill Results

Southern Silver Intersects 35.0 Metres

Averaging 188g/t Ag, 4.9% Pb and 4.6% Zn

(399g/t AgEq) at Cerro Las Minitas Project,

Durango, Mexico

Vancouver, British Columbia--(Newsfile Corp. - September 21, 2026) -

Southern Silver Exploration

Corp.

(TSXV: SSV) (the "Company" or "Southern Silver") reports assays from the first five holes of the

definition drill program on the Puro Corazon target which provide better resolution to the distribution of

the strongly silver enriched polymetallic mineralization.

Highlight assays include:

35.0 metre

interval averaging

188g/t Ag

, 0.3%g/t Cu,

4.9% Pb

and

4.6% Zn (399g/t AgEq)

including a

9.4 metre interval

averaging

344g/t Ag

, 0.2% Cu,

9.1% Pb

and

6.7% Zn

(665g/t

AgEq)

(1)

from drillhole

26CLM-225

;

5.2 metre interval

averaging

277g/t Ag

, 0.1% Cu,

9.9% Pb

and

6.3% Zn (598g/t AgEq)

including a

3.6 metre

interval

averaging

384g/t Ag

, 0.1% Cu,

13.4% Pb

and

8.3% Zn (812g/t

AgEq)

(1)

from drillhole

26CLM-226

; and

5.3 metre interval

averaging

493g/t Ag

, 0.3% Cu,

10.2% Pb

and

7.2% Zn (850g/t AgEq)

from drillhole 26CLM-227

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

These initial results are from the ongoing 14,000 metre core hole drill program that was started in June

'26 and is designed to upgrade resource classification in the Puro Corazon target. The current drill

program will test an area that is roughly a 200 metres strike-length by 300 metres down dip within the

Puro Corazon claim. The above reported drill holes successfully targeted the upper part of the zone with

nominal 40 metre step-outs from previously reported intercepts that include

10.5 metres averaging

1,115g/t AgEq

(see News Release dated December 1, 2025) from 25CLM-203 and

10.4 metres

averaging 743g/t AgEq

(see News Release dated January 6, 2026) from 25CLM-205 as well as other

mineralized intercepts.

Both skarn and replacement styles of mineralization are identified in these holes with several intercepts,

located well outboard of the Skarn zone, correlating with previous identified mineralization in the El Sol

structural zone and the main skarn target.

Vice President of Exploration, Rob Macdonald, stated, "

This is a very solid start to the definition drill

program on the Cerro Las Minitas project. These initial step out holes not only help confirm the

previously reported thicknesses and grades of mineralization in this target area, but provide better

definition as to the projection of several of the mineralized zones. Drilling continues on the project and

the Company anticipates good news flow over the coming weeks and months."

The Company reports that drilling continues with eight of 30 planned holes having been completed to

date with one hole in progress. Logging and sampling continue and assays from three holes are

pending.

Figure 1: Plan view of the drilling on the recently acquired Puro Corazon Claim.

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

https://images.newsfilecorp.com/files/5344/315107_4a43a80364675b13_002full.jpg

Figure 2: Longitudinal Section of the Puro Corazon Target, looking east. Note: pierce points

reflect intercepts into the main Skarn zone

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

https://images.newsfilecorp.com/files/5344/315107_4a43a80364675b13_003full.jpg

Next Steps

Work continues to incorporate results from the earlier 2025-26 Puro Corazon drilling into the larger

Cerro Las Minitas project which is expected to enhance the project economics and the scalability of the

mine plan. Work 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. 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.

Table 1: Select Assay Results from the Cerro Las Minitas project.

Hole #

Collar Data

From

(m)

Interval

(m)

Est.

Tr. Thck.

(m)

(g/t)

(%)

AgEq

(g/t)

ZnEq

(%)

Notes

Deg

Dip

Deg

Depth

(m)

26CLM-224

-55

381

87.8

94.9

7.1

4.3

0.01

0.14

1.8

2.2

107

4.4

26CLM-224

249.9

257.1

7.3

6.2

0.01

0.21

2.9

2.5

206

8.5

inc.

255.8

257.1

1.4

1.2

164

0.01

0.30

5.5

7.1

443

18.2

26CLM-224

284.2

287.5

3.3

2.8

0.04

1.99

1.0

1.1

253

10.4

inc.

284.2

285.0

0.9

0.7

179

0.13

7.25

0.1

0.4

664

27.2

26CLM-225

-59

355

102.3

105.2

2.9

1.9

216

0.21

0.04

3.9

1.2

318

13.0

43.8% Dilution

inc.

104.9

105.2

0.3

0.2

674

0.18

0.08

14.4

8.6

1128

46.3

26CLM-225

192.6

193.0

0.4

0.3

926

0.04

0.06

20.7

6.0

1410

57.9

26CLM-225

198.0

245.6

47.6

35.0

188

0.02

0.31

4.9

4.6

399

16.4

inc.

198.7

211.5

12.8

9.4

344

0.03

0.19

9.1

6.7

665

27.3

and inc.

240.7

245.6

4.9

3.6

235

0.03

1.67

7.1

14.8

818

33.6

26CLM-226

-68

387

141.6

143.2

1.6

0.7

0.01

0.43

3.5

258

10.6

26CLM-226

191.1

200.9

9.8

5.2

277

0.02

0.12

9.9

6.3

598

24.6

inc.

192.1

198.8

6.7

3.6

384

0.03

0.14

13.4

8.3

812

33.3

26CLM-226

252.3

252.6

0.3

0.2

232

0.01

0.11

7.3

4.6

469

19.2

26CLM-226

258.9

269.8

10.9

9.0

0.02

0.15

2.1

2.9

211

8.7

40% Dilution

inc.

258.9

261.0

2.1

1.7

309

0.03

0.16

9.5

6.6

633

26.0

and inc.

268.9

269.8

0.9

0.7

121

0.02

0.46

0.2

13.0

471

19.3

26CLM-226

318.3

324.5

6.2

5.1

0.01

0.10

0.2

0.3

3.1

24% Dilution

26CLM-227

-55

324

112.2

117.9

5.7

4.2

0.03

0.50

2.5

3.7

255

10.5

inc.

114.3

116.4

2.1

1.5

166

0.05

1.08

4.4

6.2

461

18.9

26CLM-227

128.8

136.1

7.3

5.3

493

0.02

0.27

10.2

7.2

850

34.9

inc.

130.6

135.0

4.4

3.2

748

0.03

0.37

15.5

8.4

1225

50.3

26CLM-227

202.7

212.2

9.5

8.0

0.01

0.06

1.4

0.6

105

4.3

inc.

202.7

207.0

4.3

3.6

0.02

0.07

2.0

1.2

162

6.6

26CLM-228

-54

336

230.3

257.6

27.4

19.6

0.01

0.09

2.1

2.0

155

6.4

30.5% Dilution

inc.

236.3

247.7

11.4

8.2

114

0.01

0.13

3.3

257

10.5

38.5% Dilution

and inc.

246.4

247.7

1.3

0.9

278

0.02

0.20

8.8

5.8

573

23.5

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.

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 $3,200/oz Au, $38/oz Ag, $4.75/lb Cu, $0.95/lb Pb and $1.35/lb Zn.

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

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.

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/315107

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