Dia Bras Exploration Inc.
TSX VENTURE : DIB

Dia Bras Exploration Inc.

April 18, 2007 13:40 ET

Dia Bras Drills 10.5 Metres of 678 g/t Ag at Cusi

MONTREAL, QUEBEC--(CCNMatthews - April 18, 2007) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to announce two high-grade silver intersections from its ongoing drill programme on the Cusi property, located in the State of Chihuahua, Mexico.

Hole DC07B91, drilled to test the section under the western half of the 100% Dia Bras owned San Antonio Pit intersected a 10.5-metre section averaging 0.1 g/t Au, 678 g/t Ag, trace Cu, 0.4% Pb and 0.2% Zn, including a 3-metre section which was assayed 0.25 g/t Au, 1.9 kg/t Ag, 0.1% Cu, 0.8% Pb and 0.25% Zn.



HOLE DC07B91
-----------------------------------------------------------
From To Width Au Ag Cu Pb Zn
(g/t) (g/t) (%) (%) (%)
-----------------------------------------------------------
129.5 140.0 10.5 0.1 678 0.0 0.4 0.2
-----------------------------------------------------------
Including 134.0 137.0 3.0 0.25 1,877 0.1 0.8 0.25
-----------------------------------------------------------


Hole DC 07B91 tested the down dip extension of the western portion of the San Antonio Pit. The core angle is approximately 35 degrees and should result in a true thickness of the mineralized zone of about 5 metres.

In addition, hole DC07B89, drilled to test the 100% Dia Bras owned San Bartolo Vein, intersected 16.5 metres of mixed high-grade silver and broken material filling an old stope. The hole cut an impressive section of 6.6 metres of 2.6 g/t Au, 759 g/t Ag, 0.5% Cu, 2.0% Pb and 2.5% Zn. Before entering the old stope for 7 metres, the hole intersected the remnant of the unmined material on the stope wall for 0.6 metre and returned a spectacular 0.6 g/t Au, 3.8 kg/t Ag, 3.8% Cu, 18.6% Pb and 20.3% Zn. The opposite side of the open stope returned 2.9 metres averaging 207 g/t Ag with minor Cu, Pb and Zn.



HOLE DC07B89

--------------------------------------------------------------
From To Width Au Ag Cu Pb Zn
(g/t) (g/t) (%) (%) (%)
--------------------------------------------------------------
182.0 188.6 6.6 2.6 759 0.5 2.0 2.5
Including 182.0 188.6 1.5 9.9 1555 0.34 0.7 1.44
Including 188.0 188.6 0.6 0.6 3820 3.81 18.55 20.3
188.6 195.6 7.0 Open stope
195.6 198.5 2.9 0.02 207 0.07 0.11 0.16
--------------------------------------------------------------


It should also be noted that because of the core angle, the true thickness of the zone is deemed to be approximately 8 metres.

Hole DC07B89 entered the open stope part of the historical San Bartolo mine. It is thus reasonable to infer that most of the material mined historically in this stope was of a similar nature as the very high grade 0.6 metres section encountered. Observation of the core shows that part of the mineralization is within a brecciated, silicified and jasperised quartz vein and the remaining broken rubble is rather of a more massive sulphide nature.

These results are very encouraging in light of the ongoing 25,000-metre diamond drilling programme and more drill holes are planned in this area for the beginning of May.

Method of analysis

The samples were analyzed by ICP and AA methods by Chemex at their facilities in Vancouver, Canada.

The technical content of this news release has been approved by Francois 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 newly acquired Cusi silver mining camp. The Company trades on the TSX Venture Exchange, under the symbol "DIB".

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 which 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.

Contact Information

  • Dia Bras Exploration
    Thomas L. Robyn
    Executive Chairman
    514-393-8875
    or
    Dia Bras Exploration
    Rejean Gosselin
    President & CEO
    514-393-8875
    www.diabras.com
    or
    Sun International Communications
    Nicole Blanchard
    Managing Partner
    450-627-6600