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DIOS EXPLORATION

TSX-V: DOS

March 5, 2012

DIOS RESTARTS DRILLING AROUND THE NIOBEC NIOBIUM MINE, QC

MONTREAL, QUEBEC, CANADA– DIOS EXPLORATION reports new drilling to begin on its wholly-owned claims surrounding the Niobec Niobium mine, Saguenay, QC. A new carbonatite breccia zone has recently been discovered by DIOS by drilling north-east of the Niobec mine and the drilling undertaken will check the core of this new carbonatite geophysical anomaly called the Falardeau anomaly. Drilling planned will also test the north-west anomaly for carbonatite potential. The research team of DIOS is of the opinion that a structural feature perpendicular to the Saguenay rift zone hosts the St-Honore carbonatite and associated Niobec mine and DIOS discovered the Shipshaw carbonatite more to the south along that structure and is now testing it north-east of the Niobec mine. The Falardeau carbonatite breccia zone returned values of almost 1 % REE over a few metres. Ultramafic rocks bearing some similarities with kimberlites were also intercepted. IAMGOLD recently published a REE resource estimate of their St-Honore carbonatite. IAMGOLD owns about 8.8 % of DIOS’s shares.

DIOS actively explores for diamondiferous kimberlites in the James Bay region, northern Quebec. DIOS systematically samples the glacial till cover and discovered several favourable kimberlite indicator mineral dispersal trains on its different projects and kimberlites were found on Hotish (as well as high grade uranium in volcanics). DIOS’s work also led to the discovery of gold in till glacial dispersal trains on its wholly-owned claims and the discovery to date of gold in rocks on Au33, LeCaron and 33 Carats.

This press release was prepared par M.J. Girard, M.Sc.Geo, 43-101 QP. DIOS is present at the PDAC on March 5, booth 3244.

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.

Contact : Marie-Jose Girard, President & CEO mjgirard@diosexplo.com Tel. : (514) 483-5149 Fax : (514) 510-7964 Website : www.diosexplo.com