Return to index TSX-V: DOS MARCH 18, 2010 DIOS U33 PROJECT HOSTS ROCKS GRADING 9.9 and 7.7 GRAMS PER TON GOLD MONTREAL, QUEBEC, CANADA DIOS EXPLORATION INC. reports values of up to 9.9 and 7.7 grams per ton gold in outcropping rocks on its new wholly owned diamond-gold U33 exploration project, James Bay, Quebec. The DIOS U33 property east block hosts the Fallara gold showing that assayed 9.9 g/t Au (gold), 7.7 g/t Au, 0.17 g/t Au and 2.5% As (arsenic) in association with pyrite disseminations in silicified intermediate volcanics (government file (MRNFQ, 2000). The Fallara gold showing was found by Quebec government geologists in 1997. No further work on this showing was filed. It might be explained because the claims then belonged to INCO (nickel exploration). A gold potential map (PRO 2007-05) that highlights the area as highly prospective for gold was later published by the Quebec government and the showings are located within 10 kilometers from Eastmain Resources Clearwater gold deposit (1.09 Mt grading 9.46 g/t Au). The gold showing is located 12 kilometers away from the Lagrande-Opinaca geological contact. The Goldcorp Eleonore gold deposit, located along this favourable contact, is located 50 kimometers away (3.15 million ounces of measured and indicated gold resources at an average grade of 11.92 grams per tonne and 6.25 million ounces of inferred gold resources at an average grade of 12.93 grams per tonne). DIOS staked the area this winter for its high diamond potential following the recent discovery by DIOS of a high diamond potential corridor. It seems the INCO claims have lapsed in 2009. The DIOS U33 east block also hosts the Lac Caron nickel, copper and gold (Ni-Cu-Au) showing, discovered in the seventies by INCO and located approximately 10 kilometers northeast of the Clearwater gold deposit. In 2005, INCO drilling yielded 0.265% Ni, 1.275% Cu, 0.425 g/t Au, 0.048 g/t Pt over 0.6 m; 0.167% Ni, 0.129% Cu, 1.385 g/t Au over 0.3 m; 0.289% Ni, 0.593% Cu, 0.589 g/t Au, 0.550 g/t Pt over 0.48 m. In 1972, INCO drill intercepts of up to 0.64% Cu, 0.48% Ni over 4. 3 m (incl. 0.74% Ni, 0.17 g/t Platinum (Pt), 0.14 g/t Palladium over 1.5 m) were returned from the basal part of a gabbro intruding amphibolite and mafic volcanics. At the time of discovery, it was described as a weakly mineralized sulphide (more than 10% pyrrhotite-pentlandite-chalcopyrite) horizon of 4-6 meters by 250 meters. While sampling for diamond in the general area, DIOS recently discovered a 3 to 5 by 15 kilometer gold glacial dispersal train from which heavy mineral concentrates from glacial tills yielded from 500 to 1750 ppb gold (parts per billion; 1,000 ppb=1g/T). This well defined gold train corridor seems to point out towards a wholly different target that the Falarra showing, indicating different gold targets to be hosted within the U33 property. The diamond-gold U33 exploration project covering over 500 square kilometers, is located in the Opinaca-Eastmain 1 area, some 300 kilometers northeast of the town of Matagami, James Bay, Quebec. This press release was prepared by Marie-Jose Girard, M.Sc., P.Geo, and a Qualified Person pursuant to National Instrument 43-101. 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) 510-7962 ou (514) 483-5149 Fax : (514) 510-7964 Website : www.diosexplo.com