Print text

DIA BRAS: High Silver Values at Cusi

Montréal, Québec, - March 21, 2007 -

Dia Bras Exploration Inc. (DIB-V) ("Dia Bras or the "Company") is pleased to report the results from its ongoing exploration program on the Cusi property, located in the State of Chihuahua, Mexico.

The regional geological mapping program, under the supervision of Dr. André Ciesielski, has revealed the presence of a number of gold-silver veins and breccias not previously reported in the northwestern part of the Cusi property.  Three groups of mineralized and brecciated faults have been identified to date, over a minimum surface strike length of 9.2 km, which is in addition to the 80 km of cumulative strike length of veins previously reported.

These newly discovered gold–silver showings, often associated with base metal values, show remarkable grades within structurally and/or hydrothermally controlled breccias, of variable width and size (several centimetres to one metre), usually crosscutting the ignimbrite, and composed of quartz – kaolinite – limonite and manganese oxide.  Some of the best results from grab samples include 1.97 g/t Au and 568 g/t Ag, 0.8 g/t Au and 917 g/t Ag in the San Nicolas area and 1.2 g/t Au and 2.503 kg/t Ag in the La Gloria area (see Figure 1 and Table 1).

Following reception of these assays, a channel chip sampling program of some of the accessible historic underground workings of the vertical shaft Tiro San Nicolas was initiated, and impressive results have been received, such as: 57.4 g/t Au 1.960 kg/t Ag and 2.6% Pb, 0.086 g/t Au, 1.425 kg/t Ag and 0.28% Pb (see Table 2 and Figure 2).

Because of the high gold content reported in sample DC07AC612-B, the sample has been re-assayed and returned 58.3 g/t Au.

Other prospects of the Cusi Project area, such as the historic Promontorio Mine, also show high silver values in grab samples, such as 2.2 kg/t Ag from a brecciated zone from the drift.

These results are very encouraging in light of the 25,000-metre diamond drilling program underway, and a drill rig will be mobilized early next month to this area (see press release, March 1, 2007).

Method of analysis
Gold and silver values were determined by the fire assay method, and lead, zinc, copper by AA method at the Dia Bras Malpaso mill lab.

The technical content of this news release has been approved by François Auclair, P.Geo. and Vice-President, Exploration of Dia Bras, a Qualified Person as defined in NI43-101.

About Dia Bras
Dia Bras is a Canadian exploration mining company focused on precious and base metals in the State of Chihuahua, in northern Mexico. The Company is committed to developing and adding value to its assets – the Bolivar copper-zinc project and the Cusi silver mining camp. The Company trades on the TSX Venture Exchange, under the symbol “DIB”.

For further information on Dia Bras contact:

Thomas L. Robyn
Executive Chairman
Dia Bras Exploration
(514) 393-8875 ext. 241

Réjean Gosselin
President
Dia Bras Exploration
(514) 393-8875 ext. 241

Nicole Blanchard
Managing Partner
Sun International Communications
(450) 627-6600

Forward-looking statements: Except for statements of historical fact, all statements in this news release, without limitation, regarding new projects, acquisitions, future plans and objectives are forward-looking statements that involve risks and uncertainties. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from those anticipated in such statements.

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