MONTREAL, QUEBEC–(Marketwire – May 29, 2008) – (TSX VENTURE:SOI) – Sirios Resources’ partner, Dios Exploration has received encouraging lead results on the uranium discovery of late last Fall on the Upinor Project, held 50-50 by Dios Exploration and Sirios: outcrop samples enriched in uranium are also enriched in lead. This lead is probably ancient (possibly radiogenic), suggesting the desintegration chain from uranium is continuous. Uranium found on Upinor would be primary uranium, possibly magmatic. The significance of this discovery suggests uranium found in surface does not come from surface alteration enrichment along fractures and thus values obtained in surface should be homogeneous and repeated at depth. Rock analysis also shows a uranium over thorium ratio higher than 5. A petrographic report recently received and subsequent microprobe analysis also confirm the uranium mineralization to be homogeneous, corresponding to abundant fine grained (0.3 mm) disseminated uraninite.

This is very encouraging for the diamond drilling program that was commissioned by the partners for this summer to test the uranium values at depth as well as the seemingly high volumes of mineralized rocks that would be necessary. Let us recall that a network of uraniferous pegmatitic dykes was discovered, hosted within paragneisses (meta-sediments). This network of sub-horizontal dykes dykes (dipping between 20º et 30º) is more or less east-west striking. They are parallel to the general foliation of the paragneisses and they are one to five meters thick. Up to now, the dyke swarm was observed in the field over a two kilometre east- west length and repeating itself over a 550 meter width from north to south. High uranium values areas are biotite enriched with locally apatite and molybdenite. Out of 29 samples, nine had values in U3O8 over 0,1% and nine other between 0,05% and 0,1%.

Helicopter borne spectrometry data completed to date suggests the extent of this zone through a significant and continuous uranium anomaly over at least another few kilometres along strike east of the sampled areas over a 200-450 m width, with uranium over thorium ratios even higher than the ones obtained over the first sampled areas.

This press release was prepared by Marie-Jose Girard, M.Sc. P.Geo., qualified person pursuant to National Instrument 43-101 and a director of Sirios Resources.

Forward-Looking Statements: This news release contains discussion of items that may constitute forward-looking statements within the meaning of securities laws that involve risks and uncertainties. Although the company believes the expectations reflected in such forward-looking statements are based on reasonable assumptions, it can give no assurances that its expectations will be achieved. Factors that could cause actual results to differ materially from expectations include the effects of general economic conditions, actions by government authorities, uncertainties associated with contract negotiations, additional financing requirements, market acceptance of the Company’s products and competitive pressures. These factors and others are more fully discussed in Company filings with Canadian securities regulatory authorities.


For more information:
Dominique Doucet, CEO
Phone: 514-510-7961

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