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TSX-V: DOS                                                                                     May 27, 2010


DIOS publishes the last survey result map on Shipshaw Carbonatite Complex

MONTREAL, QUEBEC, CANADA – DIOS EXPLORATION INC. publishes the last survey result map (total magnetic field) on Shipshaw Carbonatite Complex, Saguenay, Quebec.  The aeromagnetic survey (SEE MAP: ) covers an eight by five kilometers area and the rather circular low magnetic signature in blue corresponds to the Shipshaw Carbonatite Complex,  located roughly seven kilometers away from the niobium mine and ferro-niobium facilities owned by IAMGOLD.

Work completed by DIOS to date confirm the discovery of a sister complex to Niobec, its footprint bearing several similarities with Niobec (in the opinion of independent geologists having looked at the data).  Exploration work by DIOS is actually at the same stage as Niobec a few months after discovery of the rare earth core.  Some 15-20 drill holes are planned and will be required at least to fully evaluate the potential for niobium and tantalum of  the Shipshaw Carbonatite Complex of DIOS, as well as rare earth potential.

The deposit model that DIOS is looking for is obviously of the same complex type than Niobec’s carbonatite, a sheeted dyke complex, therefore horizon alternation. Historical data shows that the Niobec discovery was first made through the center of the complex, therefore the rare earth carbonatite, and then, with the help of extensive drilling, the niobium bearing zones were established in economical quantities, in the horizon surrounding the rare earth core.

At the end of April 2010, Geodata Solutions GDS Inc. carried out a helicopter borne magnetic survey for DIOS in the Saint-Honoré area, Saguenay. The survey was meant to be a geophysical analysis of the carbonatite complex of Shipshaw recently uncovered by DIOS.  The average height of the magnetic sensor above the ground is 55 metres. In total, 550 linear kilometers were necessary to cover the required area. The flight lines are 75 meters spaced and the tie lines are 975 meters spaced.

It is a geophysical technique used at ground level for more than 65 years and is applied by plane or helicopter for about 50 years.  It was a contributor the discovery of many operated mines around the world.
The terrestrial magnetic field can be compared to a magnet bar in the center and oriented according to the magnetic poles axis. This magnet produces a dipolar magnetic field which plays the part of an inductive magnetic field.
The magnetic technique, which makes use of this natural magnetic field, is based on the existence of susceptibility magnetic contrasts within the terrestrial crust. The magnetic susceptibility is the quality of certain materials to become magnetic when encountering an inductive magnetic field and to themselves create a magnetic field that is added to the dipolar terrestrial field.
Changes in the magnetic field are anomalies which mostly reflect the ferromagnetic mineral distribution within the different geological formations. It is then possible to establish a qualitative interpretation (identification of geological contacts, faults, folds) or quantitative (as of depth or the dimensions of the different magnetic sources found).
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
Tel. : (514) 510-7962 ou (514) 483-5149
Fax : (514) 510-7964
Website :