UP TO 0.787% Uranium Oxide, 0.36% Rare Earth Elements, 0.1% Ytrium, 1.5 % Zirconium, 14 g/T Silver, 0.45% Lead

MONTREAL, QUEBEC, CANADA--(Marketwire - Nov. 5, 2009) - Last summer, DIOS EXPLORATION (TSX VENTURE:DOS) completed its large 2009 field program on its wholly-owned 740 sq. kilometer Hotish uranium project, James Bay region, QC. This extensive program included systematic mapping and prospecting of selected areas, reconnaissance work on the newly staked blocks, detailed soil geochemistry on the Butte and B-1 spectrometric anomalies, detailed ground VLF surveys, and additional helicopter-borne spectrometric surveys. During the prospecting, a total of 181 rock samples were collected including 102 from outcrops and 79 from glacial boulders.

Beside the new Godzila high-grade uranium discovery (2.56 %, 1.55 %, 0.722 %, 0.502%, 0.335 %, 0.33%, and 0.13% uranium oxide), several good results came from other areas of the Hotish property:

- On the B-1 anomaly, a five meter outcrop discovered at one end of the anomaly returned up to 0.787% U3O8 (uranium oxides); 0.36% REE (rare earth elements; 0.1% Y (yttrium), 1.5% Zr (Zirconium), 14g/t Ag (silver) and 0.45% Pb (lead) from grab sampling with a U/Th ratio of13.6. It is a uranophane-monazite bearing hematitized granitic outcrop.

-Also on the same several kilometre long B-1 anomaly, two other grab-samples from uranophane-bearing biotitized granitic outcrops respectively assay 0.34% U3O8 and 0.23% U3O8. Their U/Th ratios vary from 2 to 4. A several meter large rock boulder from the same area also returned 0.04% U3O8.

- On the Amphibolite anomaly, an amphibolite boulder with disseminated galena and chalcopyrite yields 0.08% U3O8, 0.12% Cu, 1.5 g/t Ag. The associated U/Th ratio is 0.25.

- On the Butte anomaly, new mineralized areas have been uncovered in addition to the uranium mineralized zones discovered last year: new grab-samples from smoky quartz-bearing granite assay 0.15% U3O8, 0.10% U3O8; 0.06% U3O8. The associated U/Th ratios vary from 1 to 5.

This press release was prepared by M.-J. Girard, M.Sc. P.Geo., QP pursuant to N I 43-101.

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.