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SOI.V ·

Progress report on current drilling program on CHEECHOO

Exploration Programs

TSX-V : SOI November 20, 2017

Progress report on current drilling program on CHEECHOO

MONTREAL – Management of SIRIOS (TSX-V : SOI) provides an update on current diamond

drilling program on the Cheechoo gold property, neighboring the gold mine Éléonore of Goldcorp at

Eeyou Istchee James Bay, Quebec. As of now, twenty holes (#108 to 127) have been drilled for a total

of 6,300 metres. Visible gold was observed in mul tiples spots in 15 out of 18 logged drill holes ,

confirming presence of coarse free gold , however grades will be confirmed by assays results . Core

samples from first nine holes are being assayed with results pending while the rest is being prepared and

will be sent continuously to the laboratory.

Recent drill holes test ed extensions of several high-grade gold intercepts in the tonalite on a 50 -meter

spacing pattern as well as the continuity of the gold intercept in the 2-2 mineralized trench that yielded

4 g/t Au over 22,6 meters *. Furthermore , three deep holes were completed to test extensions of

previously discovered significant gold grade at approximately 500-meter vertical depth (holes #82E and

98). *includes a 1.1 meter sample grading 112 g/t Au with grade cut to 50g/t Au.

Sirios plans to complete, at least, an additional 2,000 metres of diamond drilling before mid-December.

Drill cores are being sent to Rouyn-Noranda for sawing, sample preparation and assaying. Two drills are

currently operational on the property . Delay periods to receive results are longer than expected as

contractors performing core sawing and samples preparation are overloaded with numerous maj or

drilling programs by other companies. It is the same situation for assaying laboratories.

Sirios owns the Cheechoo gold property which is located at Eeyou Istchee James Bay, Quebec, at 800

km north of Montreal and less than 10 km of the Éléonore gold mine of the producer Goldcorp, that

began its production in 2015.

Dominique Doucet, Eng., Qualified Person pursuant to National Instrument 43 -101, has prepared and

verified the technical information of this press release.

Neither the 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.

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For more information, contact:

Dominique Doucet, Eng., President, CEO

[email protected] Tel.: (514) 510-7961

Website: www.sirios.com Fax: (514) 510-7964