March 11, 2009 10:00 ET

Update on DIOS U2 Uranium Project, LaGuiche Basin, Quebec

MONTREAL, QUEBEC, CANADA--(Marketwire - March 11, 2009) - DIOS EXPLORATION (TSX VENTURE:DOS) announces completion and results of its first field work program on its wholly-owned U2 uranium project in the LaGuiche Basin, James Bay, Quebec, Canada. Last summer, a first (five-days) reconnaissance program was completed on this easily accessible large property and 25 grab-samples were collected from radioactive outcrops by DIOS team on one hand & IOS Geoscientifiques geologists on the other hand. The best results are 0.058%; 0.036%, 0.031% U3O8 and appear located along a NE axis.

Half of the samples were sent at Val d'Or ALS-CHEMEX laboratory and the other half are currently being processed at the Sasketchewan Research Counsil. Field readings (radiation solution RS-120 & 125) on two first-priority areas vary respectively from 700 to 2,400 cps and 1,000 to 7,400 cps. The associated U/Th ratios vary from 1.0 to 3.8.

The property also hosts the former S.E.S. uranium Delphine showing that returned 1000 to 5000 cps over a minimum strike of 150 meters associated with a coarse-grained (INCO-Apple-type conglomeratic) quartzite unit (GM 34117), adjacent to ultrabasic rocks. Several meter thick pegmatitic granite dykes hosting uraninite, uranophane and apatite were also observed by IOS geologists.

The U2 property is centered on a uranium lake bottom sediment anomaly cluster from SDBJ data including 21 samples over 20 ppm U by INAA (parts per million uranium analyzed by neutron activation): 79, 72, 45, 44, 43, 42, 33, 33, 28, 27, 26, 24.5, 22, 21, 20 ppm U, with 5 samples over 100 ppm U by INAA (300, 202, 150, 150, 110) over a 12 km by 12 km area. These anomalies are associated with a high magnetic anomaly. Another group of 12 uranium lake sediment anomalies (276, 184, 177, 175, 167, 135, 134, 119, 119, 114, 97 ppm U AA (analyzed by atomic absorption) seem associated with NE structures within paragneiss. Previous government mapping suggests that the U2 property is underlain by an Archean granitic plug (Granite du Vieux Comptoir) wrapped within magnetic migmatitic quartz diorite and LaGuiche paragneisses (metasediments). The DIOS' team is of the opinion it has uncovered a new uranium district in Quebec, with all its new uranium discoveries in the Opinaca area. Rossing-type high tonnage low-grade uranium as well as classic vein-type models may be considered in association with numerous anatexis granites occurring within paragneisses of the LaGuiche Basin.

The U2 property is composed of 427 contiguous mining cells (cdc) totalling about 215 square kilometres. It is located nearby Mortemart Lake, about 10 km north of Dios-Sirios Upinor uranium property and 30 km south of the Trans-Taiga road and of LaGrande-3 hydro-electrical reservoir, James Bay, Quebec.

DIOS is in a good financial position and has the funds necessary to pursue its exploration programs. This press release was prepared by M.-J. Girard, M.Sc. P.Geo., a qualified person pursuant to National Instrument 43-101.

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

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