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Message: Dia Bras Drills More High Grade Silver at Cusi

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Dia Bras Drills More High Grade Silver at Cusi

10:30 EDT Wednesday, August 04, 2010

MONTREAL, QUEBEC--(Marketwire - Aug. 4, 2010) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to report that drilling in support of mine planning at its Cusi silver project is returning significant results, with more high-grade intercepts from the Promontorio, Santa Eduwiges and San Juan mines, plus elevated gold grades from San Juan. Both the Promontorio and San Juan mines are being prepared for pilot-mining during early 2011.

"These results are very encouraging but not surprising", states Daniel Tellechea, President and CEO of Dia Bras. "We have constantly drilled high silver grades at this project and the presence of gold at San Juan is especially encouraging."

Locations of drill holes reported here are shown in http://www.diabras.com/en/newscenter/2010/El%20Gallo_DDH_2aug.pdf Figure 1 of the Promontorio Area (El Gallo Vein) and http://www.diabras.com/en/newscenter/2010/San%20Antonio_DDH_2aug.pdf Figure 2 of the Santa Eduwiges Area (San Antonio Vein). Results from the three areas are shown in the tables below:

Promontorio Area:

--------------------------------------------------------------------------
                                       Est.                               
Hole      From     To  Interval  True Width     Ag     Pb     Zn          
ID(i)      (m)    (m)       (m)         (m)  (g/t)    (%)    (%)      Vein
--------------------------------------------------------------------------
286      142.3  145.5       3.2         2.9    361   0.34   0.38         L
--------------------------------------------------------------------------
288      137.3  138.6       1.3         1.1    600   0.30   1.34  El Gallo
--------------------------------------------------------------------------
291      128.7  130.0       1.3         1.2    232   0.14   0.22  El Gallo
--------------------------------------------------------------------------
294      146.9  149.9       3.0         2.5    394   0.74   0.35  El Gallo
----------------------------------------------------------------          
incl.    147.9  148.9       1.0         0.8  1,155   2.09   0.85          
--------------------------------------------------------------------------
295      128.1  128.7      0.60        0.55  1,035   0.12   0.37  El Gallo
--------------------------------------------------------------------------
296      137.8  139.9       2.1         1.9    381   0.19   0.27  El Gallo
--------------------------------------------------------------------------

(i)All holes have the prefix DC10B

Santa Eduwiges Area

---------------------------------------------------------------------------
                                      Est.                                 
Hole      From     To  Interval True Width    Ag      Pb     Zn            
ID(i)      (m)    (m)       (m)        (m)  (g/t)    (%)    (%)        Vein
---------------------------------------------------------------------------
292       35.0   39.8       4.8        2.8    290   0.11   0.10 San Antonio
---------------------------------------------------------------------------
                                                                 S. Antonio
293       27.1   29.0       1.9        1.7    194   0.17   0.14        Alto
---------------------------------------------------------------------------
                                                                  S. Marina
300       33.6   36.0       2.4        1.9    814   0.21   0.28        Alto
---------------------------------------------------------------------------

(i)All holes have the prefix DC10B

San Juan Area

Drilling at San Juan is proceeding rapidly because most of the holes are relatively short; see http://www.diabras.com/en/newscenter/2010/SanJuanLong_Section.pdf Figure 3 (a cross section along the San Juan Vein). In addition, channel sampling of underground workings is in progress; assay results will be released after gold values have been reported. Additional drill results will also be released after gold values have been reported.

--------------------------------------------------------------------------
                                 Est.                                     
Hole   From    To Interval True Width     Au     Ag     Pb    Zn          
ID(i)   (m)   (m)      (m)        (m)  (g/t)  (g/t)    (%)   (%)      Vein
--------------------------------------------------------------------------
297    96.0 102.0      6.0        2.2   1.10    655   0.13  0.15  San Juan
----------------------------------------------------------------          
incl.  96.0  99.0      3.0        1.1   1.96  1,240   0.23  0.25          
--------------------------------------------------------------------------
302    49.6  53.0      3.4        2.2   0.55    314   0.04  0.06  San Juan
--------------------------------------------------------------------------

(i)All holes have the prefix DC10B

Method of Analysis

Samples were prepared at the ALS Chemex lab facility in Chihuahua, Mexico, and analyzed by ICP and AA methods at their facilities in Vancouver, Canada. Diamond drill samples sent for analysis consisted of half NQ-size and BQ-size diamond core split on site, prepared by the ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Au by 50 g fire assay with AA finish, and for Ag by AA on 50 g split sample at the ALS Chemex North Vancouver Laboratory. Assays for Pb, Zn and Cu are done by Induction Coupled Plasma (ICP) at ALS Chemex.

Quality Control

The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in both RPA's NI 43-101 reports of December, 2006, at Cusi and October, 2005, for Bolivar.

The technical content of this news release has been approved by Thomas L. Robyn, Ph.D., CPG, RPG, a Director of Dia Bras, a Qualified Person as defined in NI 43-101.

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 Property and the Cusi Property. The Company's shares trade on the TSX Venture Exchange under the symbol "DIB".

For further information on Dia Bras Exploration Inc. visit www.diabras.com.

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.

FOR FURTHER INFORMATION PLEASE CONTACT:

Dia Bras Exploration Inc.
Daniel Tellechea
President & CEO
1-866-493-9646



or
Dia Bras Exploration Inc.
Karl J. Boltz
Vice President, Corporate Development
1-866-493-9646
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