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Telson’s Tahuehueto El Perdido Zone Continues to Impress with New Exploration and Development Assays

Corporate Updates

Telson Mining Corporation

TSX.V: TSN OTCPink: SOHFF

Frankfurt: TSGN.F

Shares Issued: 139,579,152

Page 1 of 5

Telson’s Tahuehueto El Perdido Zone Continues to Impress with New

Exploration and Development Assays

Vancouver, British Columbia, June 25, 2019

Telson Mining Corporation (“Telson” or the “Company” (TSX -V, OTC Pink-SOHFF, Frankfurt-TSGN (formerly SQ82)) is

pleased to again report significant channel sample assay results from underground mine exploration and

development at it’s Tahuehueto Project, a 1,000 tonne per day gold mine currently in construction and development.

Underground development extending the El Perdido zone northeast has advanced 225 meters from the Level 12

decline exposing new and continuous mineralization that will certainly add new resources and potentially reserves to

the project. The first 55 meters of this development was designed to prepare reserves identified by previous drilling

for mining, however, the development drift is being extended in mineralization beyond known reserves or resources

and to date has exposed an additional 125 meters of continuous mineralization beyond the known drill intersections.

Stope preparation and mining to collect high grade mineralization for stockpiling, shipping and processing at the

Atocha Toll Mill has commenced within the newly discovered El Perdido mineralization.

Highlights

El Perdido - Stope Channel Assays

Sample Lab

Certificate Width Assays

Au g/t Ag g/t Cu % Pb % Zn % AuEq g/t

3334 DU42066 1.05 7.48 171 1.82 2.15 8.28 18.64

3335 DU42066 0.60 7.20 94 0.71 10.90 3.43 17.21

3336 DU42066 0.77 2.30 100 1.49 0.67 5.61 9.67

Total 2.42 5.76 129 1.44 3.85 6.23 15.43

3337 DU42066 0.90 2.57 14 0.04 0.23 0.63 3.31

3338 DU42066 0.80 4.47 96 0.48 2.16 2.23 8.87

3339 DU42066 0.85 4.12 32 0.10 0.58 1.91 6.15

3340 DU42066 1.30 3.60 37 0.23 1.26 2.61 6.68

3341 DU42066 0.95 3.07 113 0.80 0.24 6.69 9.95

3342 DU42066 0.70 1.70 55 0.29 1.29 8.18 8.56

Total 5.50 3.31 57 0.32 0.94 3.54 7.17

3343 DU42066 0.70 6.26 59 0.41 1.70 4.23 11.11

3344 DU42066 1.10 5.51 27 0.24 1.17 2.12 8.13

3345 DU42066 1.10 4.84 24 0.31 0.90 1.98 7.32

3346 DU42066 1.55 4.10 50 0.45 2.43 6.09 10.45

3347 DU42066 0.93 1.75 65 0.51 0.70 2.60 5.30

Total 5.38 4.41 44 0.38 1.47 3.59 8.53

3348 DU42066 1.40 8.59 39 0.28 1.54 6.66 14.43

3349 DU42066 1.30 4.32 26 0.08 0.36 0.26 5.10

3350 DU42066 1.30 4.11 35 0.42 0.47 0.64 5.83

3351 DU42066 1.40 7.78 35 0.36 1.73 6.62 13.78

3352 DU42066 1.60 1.23 61 0.32 0.89 1.88 4.09

Total 7.00 5.12 40 0.29 1.01 3.25 8.60

3353 DU42066 1.00 20.68 64 0.47 2.58 8.08 28.53

3354 DU42066 1.65 7.31 85 0.33 5.18 8.51 16.80

3355 DU42066 1.60 1.10 42 0.03 0.53 0.77 2.40

Telson Mining Corporation

TSX.V: TSN OTCPink: SOHFF

Frankfurt: TSGN.F

Shares Issued: 139,579,152

Page 2 of 5

3356 DU42066 1.00 0.89 29 0.11 0.43 2.88 3.42

3357 DU42066 1.20 1.07 24 0.15 2.13 8.20 7.78

Total 6.45 5.69 51 0.21 2.32 5.59 11.29

3358 DU42066 0.85 6.03 25 0.19 1.43 2.29 8.79

3359 DU42066 1.30 1.28 30 0.12 0.45 0.63 2.45

3360 DU42066 1.50 1.18 58 0.39 0.21 2.58 4.20

3361 DU42066 1.27 1.09 46 0.15 0.72 16.30 12.37

Total 4.92 2.02 42 0.22 0.61 5.56 6.64

3362 DU42066 0.90 8.11 88 0.61 2.81 3.08 13.49

3363 DU42066 1.10 1.84 48 0.14 0.90 7.80 7.94

3364 DU42067 0.95 3.37 94 0.29 0.42 4.41 7.89

3365 DU42067 1.20 0.35 12 0.01 0.11 0.66 0.98

3366 DU42067 1.20 0.34 14 0.05 0.52 0.57 1.20

Total 5.35 2.49 47 0.20 0.87 3.18 5.79

3367 DU42067 0.80 6.19 42 0.21 1.99 5.54 11.48

3368 DU42067 1.00 1.99 25 0.06 0.41 0.45 2.87

3369 DU42067 1.70 2.87 31 0.38 0.30 0.44 4.27

3370 DU42067 1.10 8.83 63 0.25 2.10 1.34 11.88

Total 4.60 4.68 39 0.25 1.05 1.54 7.04

3371 DU42067 0.60 3.27 23 0.07 0.46 0.65 4.29

3372 DU42067 0.72 25.96 77 0.18 1.93 3.26 30.19

3373 DU42067 1.10 5.27 69 0.11 1.08 1.74 7.90

3374 DU42067 1.00 8.30 63 0.25 2.07 2.55 12.10

3375 DU42067 1.00 3.72 53 0.24 2.82 2.69 7.85

Total 4.42 8.70 59 0.18 1.75 2.24 11.98

3376 DU42067 0.60 3.84 79 0.05 0.36 0.34 5.24

3377 DU42067 1.10 1.22 22 0.06 0.43 0.73 2.25

3378 DU42067 1.28 8.73 29 0.06 0.64 0.93 10.08

3379 DU42067 1.10 20.90 159 0.56 0.86 1.56 25.08

Total 4.08 9.27 69 0.19 0.60 0.96 11.30

3380 DU42067 0.70 9.81 28 0.05 0.40 0.45 10.70

3381 DU42212 0.96 8.58 61 0.23 2.31 2.68 12.53

3382 DU42212 1.00 7.52 104 0.52 2.58 8.13 15.95

3383 DU42212 0.90 6.30 100 0.12 7.62 5.90 15.28

Total 3.56 7.95 76 0.25 3.35 4.59 13.83

3384 DU42212 0.90 2.73 31 0.08 0.25 0.42 3.61

3385 DU42212 1.00 8.23 148 0.89 5.88 4.79 17.41

3386 DU42212 0.90 7.07 130 1.35 2.50 6.76 16.24

3387 DU42212 1.10 0.01 2 1.00 0.01 0.01 1.63

3388 DU42212 1.04 13.60 153 1.01 9.62 12.80 29.94

Total 4.94 6.32 92 0.88 3.72 4.98 13.81

El Perdido - Development Exploration Channels

Sample Lab

Certificate Width Assays

Au g/t Ag g/t Cu % Pb % Zn % AuEq g/t

3202 DU41409 0.75 0.50 14 0.03 0.46 1.06 1.61

3203 DU41409 1.40 6.08 47 0.07 0.55 0.92 7.60

3204 DU41409 1.00 1.61 7 0.01 0.20 0.30 2.00

Total 3.15 3.33 26 0.04 0.42 0.76 4.40

3391 DU42212 1.98 0.89 45 0.36 2.36 6.16 7.05

3392 DU42212 1.22 2.97 216 0.90 3.37 6.36 12.64

3393 DU42212 1.02 1.30 33 0.18 1.57 0.58 3.16

3394 DU42212 0.96 1.85 42 0.18 2.23 0.48 4.08

Total 5.18 1.64 82 0.42 2.42 4.06 7.05

3413 DU42212 1.10 28.34 42 0.27 0.89 1.95 30.94

3414 DU42212 1.80 0.65 10 0.03 0.30 0.49 1.28

3415 DU42212 1.60 1.63 16 0.05 0.54 1.40 3.05

Telson Mining Corporation

TSX.V: TSN OTCPink: SOHFF

Frankfurt: TSGN.F

Shares Issued: 139,579,152

Page 3 of 5

Total 4.50 7.77 20 0.10 0.53 1.17 9.16

3432 DU42682 1.10 0.34 24 0.09 0.26 0.41 1.16

3433 DU42682 1.20 0.84 57 0.20 4.29 2.38 5.53

Total 2.30 0.60 41 0.15 2.36 1.44 3.44

3434 DU42682 1.20 0.48 103 0.87 0.98 1.98 4.80

3435 DU42682 1.40 2.25 71 0.01 0.08 0.20 3.27

3438 DU42682 0.70 0.18 53 0.74 0.73 1.61 3.36

3439 DU42682 1.00 1.25 40 0.33 1.33 3.23 4.94

Total 1.70 0.81 45 0.50 1.08 2.56 4.29

The above assay intervals are the weighted average results from several samples across one channel sample line. Individual

samples for each channel line can be viewed on the Company’s web site by following the links provided below.

Figure 1 – Tahuehueto Project

Figure 2 – El Perdido Development and Exploration Assay Results

Figure 3 – El Perdido Stope Development Assay Results

Table – Development and Stope Channel Assays

Gold Equivalent Calculation: - Metal prices used in US$ – Au $1,204, Ag $14.20, Cu $2.80/lb, Pb $0.91/lb, Zn $1.09/lb

Formulas: 1st calculate a metal factor: for base metals (gold price/31.1 g/Troy oz)/ (base metal price*2.2kg/lb*10) = Base Metal Factor. For

Silver Metal Factor = gold price/silver price.

AuEq grade = Gold grade + (Ag grade/Ag Factor) + (Cu grade/Cu Factor) + (Pb grade/ Pb Factor)+ (Zn grade/Zn factor). Investors are

cautioned that gold equivalent values fluctuate with metal prices, are in-situ and will not be fully recoverable due to mining dilution, metal

recovery loss during processing and final selling terms.

All the channel samples were submitted to SGS De Mexico. S.A. de C.V. independent laboratory located in Durango city Mexico. Assay methods

utilized were GE_FAA313 and GE_ICP14B for gold and silver respectively with over-limits followed up with GO_FAG303, Multi-element

GE_ICP14B for lead and zinc with over-limits assayed with GO_ICP90Q. Additional detail on assay methodology used can be found on SGS website

at https://www.sgs.mx/en/mining

The assays presented above were collected as channel samples from a stope being prepared for production within

the El Perdido zone and from underground development extending the El Perdido Zone towards the 800-meter

distant Santiago Zone. This major structure is open in all directions and management is confident that new

resources will be discovered here with future exploration in the future.

“We are definitely excited about the mineralization we are discovering in the El Perdido development. These results

continue to enforce that the El Perdido structure is a main thoroughgoing structure that so far, is strongly

mineralized from the Cinco de Mayo zone to the end of the El Perdido development, over an explored length of

approximately 2 km,” states Ralph Shearing, President, “Should this mineralization continue to the northeast to

connect with the Santiago zone, as our exploration model suggests, we will have at least a 3 km long mineralized

structure that is open in all directions to potentially add new resources to the project. I should also point out that

this is only one of at least 7 other unexplored mineralized vein structures identified on the project.”

About Telson Mining Corporation

Telson Mining Corporation is a Canadian based mining company with two Mexican gold, silver and base metal mining

projects. Effective May 15, 2018 Telson declared commercial production at its 100% owned Campo Morado Mine,

which is currently producing zinc and lead concentrates with gold, silver and copper as by-products.

Telson Mining Corporation

TSX.V: TSN OTCPink: SOHFF

Frankfurt: TSGN.F

Shares Issued: 139,579,152

Page 4 of 5

Telson's 100% owned Tahuehueto Project, located in north-western Durango State, Mexico is currently in construction

development. Pre- production commenced at Tahuehueto in August 2017, currently mining at a rate averaging

approximately 100 tonnes per day an d shipping ore to a third -party toll mill for processing. Management has a

targeted timeline at Tahuehueto to be producing with its own on- site mineral processing plant, with a designed

capacity of at least 1,000 tonnes per day by the end of 2019.

Visit: www.telsonmining.com

Qualified Persons

This press release was prepared under the supervision and review of Ralph Shearing, P.Geol., President and

Director of Telson Mining Corporation, a Professional Geologist registered in Alberta as a member of the

professional association APEGA, and a Qualified Person as defined by NI 43-101.

On behalf of the board of directors

(signed) “Ralph Shearing”

Ralph Shearing, P.Geol, President and Director

Cautionary Note Regarding Production Decisions and Forward-Looking Statements

Statements contained in this news release that are not historical facts are “forward-looking information” or “forward-looking

statements” (collectively, “Forward- Looking Information”) within the meaning of applicable Canadian securities laws.

Forward Looking Information includes, but is not limited to, disclosure regarding possible events, conditions or financial

performance that is based on assumptions about future economic conditions and courses of action; the timing and costs of

future activities on the Company’s properties, such as production rates and increases; success of exploration, development

and bulk sample processing activities, and timing for processing at its own mineral processing facility on the Tahuehueto

project site. In certain cases, Forward-Looking Information can be identified by the use of words and phrases such as “plans”,

“expects”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or variations of such words and phrases. In preparing

the Forward-Looking Information in t his news release, the Company has applied several material assumptions, including,

but not limited to, that the current exploration, development, environmental and other objectives concerning the Campo

Morado Mine and the Tahuehueto Project can be achieved, the continuity of the price of gold and other metals, economic

and political conditions and operations. Forward-Looking Information involves known and unknown risks, uncertainties and

other factors which may cause the actual results, performance or achievements of the Company to be materially different

from any future results, performance or achievements expressed or implied by the Forward-Looking Information. There can

be no assurance that Forward-Looking Information will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on Forward-

Looking Information. Except as required by law, the Company does not assume any obligation to release publicly any

revisions to Forward- Looking Information contained in this news release to reflect events or circumstances after the date

hereof or to reflect the occurrence of unanticipated events.

Telson Mining Corporation

TSX.V: TSN OTCPink: SOHFF

Frankfurt: TSGN.F

Shares Issued: 139,579,152

Page 5 of 5

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.

For further information about Telson Mining Corporation, please contact:

Glen Sandwell

Corporate Communications Manager

[email protected]

Tel: +1 (604) 684-8071