Dia Bras drills 19 metres of 1.39% Cu in the Lower Skarn and 3 metres of 12.4% in the Upper Skan at El Gallo Prospect of the Bolivar Property

Montréal, Québec, - July 31, 2007 -

Dia Bras Exploration Inc. (DIB-V) ("Dia Bras or the "Company") is pleased to announce more drill intercepts in the El Gallo area from its ongoing surface exploration drilling program at the Bolivar property in the State of Chihuahua, Mexico.  These intercepts have identified a new, extensive area of potentially mineable mineralization, which is open down dip and may be significantly larger than presently inferred.

El Gallo is situated some 500 to 800 metres south-southeast of the Bolivar mine where Dia Bras is conducting its pilot-mining program.  From late 2003 to the end of 2006, some 2974m in 13 diamond core holes have been drilled at El Gallo.  Following a thorough review in early 2007 of the relations between the Upper Skarn and Lower Skarn mineralized trends, it was decided that a 5000m diamond drilling program would be conducted to estimate resources in both skarn units.

In El Gallo, the Upper Skarn mineralization appears to be more continuous along strike than in the Bolivar mine area.  A possible explanation is that the mineralization at El Gallo is of a “manto” type rather than being a pipe or breccia.

Better mineralization (higher grades, with thicker and more continuous mineralization) in the Upper Skarn appears to be associated with an intricate relationship between the contact of the granodioritic pluton and the overlying sedimentary skarn sequence Underground mapping, drilling and pilot-mining at the Bolivar mine demonstrates that an apophysis of granodiorite ramps up and over the skarn unit and is physically associated with better mineralization. This relationship has been most notably observed at the Breccia Linda, Titanic and Selena zones of the Bolivar mine, all of particularly good grade and tonnage.

This same relationship has been recognized at El Gallo, where Dia Bras has drilled an area of 150m x 400m on a 50m x 150m drill pattern.  The Company intends to extend this pattern to the north and northeast to follow El Gallo mineralization down dip.  Since March 2007, 8 drill holes totaling 1 874 metres have been drilled with excellent results. More drilling is planned to extend this initial 5000m program with the objective of preparing the first resource evaluation of the El Gallo area.

This contact relationship is now a major planning factor in the Company’s exploration program.  It is also important to note that this relationship between a granodioritic apophysis and better mineralization is also inferred to exist at several places along the 3 km trend of exposed skarn mineralization, most notably to the southeast at La Montura, La Pequeña, La Narizona and El Val.

All drill holes reported in this news release are from the area of section 9325N (50 metres composite) which is situated in the core of El Gallo area.  Here the mineralization observed in the Upper Skarn unit consists of finely disseminated to semi-massive bands of Cu-Zn mineralization over variable widths. View the section

Drill hole DB07B198 was drilled at azimuth 248o and a dip of -77o.  It intersected numerous bands of disseminated Cu-Zn mineralization, with best assays of 2.2% Cu over 4.0 metres in the Upper Skarn. In the Lower Skarn, 3 zones of disseminated sulphide mineralization were observed, with two wider zones of 7 and 8 metres of greater than 1% Cu.  These widths are essentially true widths because of the angle of intercept of the drill hole with the skarns.

Drill hole DB07B199 was drilled at an azimuth of 77o and a dip of -83o.   It intersected 3 metres of 10.4% Zn in the Upper Skarn and an impressive 19m of 1.4% Cu in the Lower Skarn.  True widths are estimated at 2.5m and 16m, respectively.

Drill hole DB07B201, drilled vertically, intersected both the Upper and Lower Skarn mineralized zones.  Assays are pending.

Drill hole DB07B202, drilled at an azimuth of 225o and a dip of -68o intersected high grade Zn mineralization, 3.3m at 6.9% Zn and 3m at 12.4 % Zn, in the Upper Skarn and a 12.5 metres section of 1.3% Cu in the Lower Skarn.  These widths are essentially true widths.

Drill Hole DB07B205 was started last week and will be completed within the next week.  Assay results will follow.

Table 1: Newly-Reported Assay Results


Drill hole

From

To

Interval

Cu
(%)

Zn
(%)

Au
(ppm)

Ag
(ppm)

Zone

DB07B198

126.0

127.0

1.0

0.01

1.61

2.48

5

US

 

153.0

167.0

14.0

1.16

0.07

0.08

28

LS

including

153.0

157.0

4.0

2.23

0.16

0.09

43

 

 

202.0

209.0

7.0

1.00

0.02

0.44

30

LS

 

213.0

221.0

8.0

1.26

0.04

0.14

22

LS

including

214.0

215.0

1.0

3.60

0.13

0.53

54

LS

 

 

 

 

 

 

 

 

 

DB07B199

116.0

119.0

3.0

0.19

10.36

0.02

6

US

 

233.0

252.0

19.0

1.39

0.11

0.67

27

LS

including

237.0

238.0

1.0

3.46

0.19

1.43

61

 

 

 

 

 

 

 

 

 

 

DB07B201

Pending

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DB07B202

63.5

66.8

3.3

0.18

6.9

0.03

7

US

 

79.7

82.7

3.0

0.42

12.4

0.02

7

US

 

85.0

97.5

12.5

1.3

Nil

0.05

23

LS

 

Rest of hole pending


Table 2: Previously-Reported Assay Results


Drill hole

From

To

Interval

Cu
(%)

Zn
(%)

Au
(ppm)

Ag
(ppm)

Zone

DB03B002

132.0

137.0

5.00

1.50

0.20

0.10

17.00

LS

DB04B004

86.0

98.0

12.00

1.20

3.80

0.10

31.00

US

DB04B005

109.0

121.0

12.00

2.10

nil

nil

49.00

LS

DB05B154

74.0

83.0

9.00

2.10

nil

0.10

46.00

LS

DB05B154

138.0

146.0

8.00

1.10

nil

nil

20.50

LS

DB05B156

83.0

102.0

19.00

2.10

0.20

0.30

47.30

LS

DB06B158

74.0

84.0

10.00

2.80

2.10

0.30

57.00

LS

DB06B165

81.5

98.0

16.50

1.00

3.80

0.20

30.00

US

DB07B193

199.0

201.8

2.80

1.60

0.10

0.27

32.00

LS

DB07B196

210.0

226.0

16.00

1.00

nil

0.20

19.00

LS

DB07B197

226.0

248.0

22.00

2.16

0.10

0.70

27.00

LS

Method of analysis
Samples from holes DB07B198 and 199 were analyzed by ICP and AA methods by Chemex at their facilities in Vancouver. Canada.  Samples from holes DB07B201, 202 and 204 were analyzed both at Chemex in Vancouver and/or Dia Bras Mexicana lab facilities in Malpaso, Chihuahua.

Quality control
Diamond drill samples sent for analysis consist of half NQ-size diamond core split on site, prepared by ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Au and Ag by 50 g fire assay with AA finish at the ALS Chemex North Vancouver Laboratory.  Assays for Pb, Zn and Cu are done by Induction Coupled Plasma (ICP) at Chemex and by AA at Malpaso. The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in both RPA’s 43-101 reports of December 2006 at Cusi and October 2005 for Bolivar.

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
Réjean Gosselin
President & CEO
Dia Bras Exploration
(514) 393-8875
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.