Mr. Antonio Berlanga reports

TELSON ISSUES TAHUEHUETO Q1 2018 PREPRODUCTION RESULTS FOR MINING, CONCENTRATE PRODUCTION & METALLURGICAL BALANCES

Telson Mining Corp. has provided the results of first quarter 2018 preproduction toll milling at its 100-per-cent-owned Tahuehueto mine development project located in Durango, Mexico. Preproduction toll milling from Tahuehueto processed 9,503 tonnes of ore at the Atocha mill during the Q1 2018 for an average of 106 tonnes per day.

Mining and milling daily average preproduction rate reduced by approximately 20 per cent during Q1 from the previous 2017 preproduction as the company directed production equipment from the preproduction mining to commence its Tahuehueto mine construction phase. Additional mining equipment has been sourced and purchased and when delivered to the mine site the company expects to increase its daily preproduction rate to former levels.

During Q1 2018 toll milling at the Atocha processing plant milled approximately 9,503 tonnes of ore. The average head grade of the total preproduction ore processed was 5.44 grams per tonne gold, 61.59 g/t silver, 4.54 per cent zinc and 2.25 per cent lead.

This toll milling produced 360.29 tonnes of lead concentrate with average grades of 50.18 per cent lead, 99.25 g/t gold, 1,185 g/t silver, 12.19 per cent zinc and 712.71 tonnes of zinc concentrate with average grades of 46.28 per cent zinc, 7.41 g/t gold, 105 g/t silver and 0.93 per cent lead.

The estimated total cash sale value of the lead and zinc concentrates produced during Q1 was approximately $3,039,487 (U.S.) based upon those concentrates delivered to Trafigura and invoiced by the company to date.

Note 1: Shipped concentrates are paid at 90-per-cent estimated metal content as determined by preliminary assaying, less deductions upon delivery to Trafigura warehouse in Manzanillo.

The estimated 100-per-cent cash selling price is subject to minor changes once final assaying results are agreed to by the company and Trafigura at which time the final approximate 10 per cent is paid.

Antonio Berlanga, chief executive officer of Telson, states: "Tahuehueto concentrate preproduction continues to impress Telson's management, capturing premium sale values with excellent concentrate quality and payable metal grade with only very minimal penalizing impurities. The Q1 2018 toll milling campaign has, more or less, duplicated previous preproduction toll milling results obtained during 2017. Payable metal recoveries for total Q1 2018 preproduction are once again excellent, averaging 79.4 per cent gold, 85.7 per cent silver, 84.4 per cent lead, 76.4 per cent zinc. During the quarter we redirected equipment from mining to mine construction activities which resulted in the production rate being reduced approximately 20 per cent. We have acquired and are shipping additional new equipment to the mine site so anticipate increasing our preproduction rates to previous 2017 averages or better, in the near future. I'd like to point out to our shareholders that when you combine Q1 preproduction sales from Campo Morado (see news release dated April 18, 2018) and Tahuehueto, Telson generated approximately $10,743,609 (U.S.) or $13,751,819 (Canadian) (using $1.28 exchange rate from U.S. to Canadian) in Q1 2018 which is very impressive considering we are still in the development stage. I'd like to thank all our employees for the great progress we have made so far in 2018."

Readers should be cautioned that cash sales should not be equated with revenues, as until commercial production is achieved at Tahuehueto, which is not expected until early 2019, once Telson completes construction of its proposed on-site mineral processing facility, any proceeds from the sale of concentrates are considered under IFRS (international financial reporting standards) to be applied as an offset to development costs and not counted as revenues on Telson's income statement.

Furthermore, Telson is not, during the preproduction stage, able to disclose the costs/expenses associated with generating such cash sales or provide guidance on profitability (if any).

About Telson Mining Corp.

Telson Mining is a Canadian-based junior resource mining company currently in preproduction at two Mexican gold, silver and base metal mining projects, and is advancing both toward commercial production over the coming months of 2018.

We seek Safe Harbor.