IMPRESSIVE FIRST RESULTS AT CUSI PROJECT, CHIHUAHUA, MEXICO

 

Dia Bras announces drill hole results of more than 10,000 g/t Ag

Montréal, Québec - October 3, 2006 -

Dia Bras Exploration Inc. (DIB-V) ("Dia Bras or the "Company") is pleased to announce an intersection of 4.9 m at >3,355 g/t Ag, 0.56 g/t Au, 1.14% Cu, 0.65% Pb and 0.20% Zn including a section of 1.4 m grading over 10,000 g/t Ag .

This intersection is from hole DC06B012 that was drilled to test the depth extension of La India, one of the 12 former mines that are part of the Cusi silver district acquired by the Company in May 2006.  The Cusi silver property extends over 75 km2 of land and is located only 40 km from the Company’s Malpaso Mill.

In June, soon after the Cusi acquisition, Dia Bras started a surface geological and geochemical program under the supervision of André Ciesielski, Ph.D an experienced structural geologist with more than 27 years of experience. This program is aimed at identifying all veins and structures, alteration and mineralization patterns in the central part of the silver camp. Approximately 3 km2 have been mapped and the 5 km2 central area will be covered by year’s end.  This comprehensive and intensive exploration program was started only four months ago, immediately after the Company acquired the properties and assay results are just starting to be returned. There are currently 3 of the Company diamond drills working on site and the Company anticipates drilling 15,000 m by the end of the year.

The Cusi exploration program will be conducted in three phases, done concurrently and will extend for at least for 2.5 years. The program will cover 500 km2 of which 100 km2 is controlled by Dia Bras Mexicana. More than 80 Ag-Pb-Zn-(Cu-Au) mineralized veins occur in this area that have been worked intermittently since the colonial era. Most of the artisanal exploitations reached a maximum of 200 m below the surface. No more than 3 former mines were developed to the 400 m level.

As part of the first phase of exploration, underground mapping and sampling were done at La India, San Miguel, La Bamba and Santa Edwiges after underground mines were made secure and accessible. A total of 5,895 m of diamond drilling in 35 holes has been completed as detailed below:

 

La India

2,832 m

in 16 holes

San Miguel

2,172 m

in 11 holes

La Bamba

358 m

in 3 holes

Santa Edwiges

533 m

in 5 holes

Total drill results

5,895 m

in 35 holes

 


LA INDIA

This former mine has two levels accessible by an adit and a shaft. A total of 166 samples was collected along 3 veins flanked by breccia over a distance of 300 m. A section from level 2, comprising 19 composite channel samples on 7 different sections gave an average of 231g/t Ag along a 40 m strike with an average width of 1.87 m.

Sixteen diamond drill holes totaling 2,832 m were completed in this area. Three holes were collared to test an alteration zone south of the property with no significant results and thirteen to test the depth extension of the veins. Six holes stopped in fault zones or old workings. Seven holes intersected the mineralized structures.  The only two holes that returned economic values intersected the zone near the mineralized area on level 2:

Drill Hole

From

To

Width

Au
g/t

Ag
g/t

Cu
ppm

Pb
ppm

Zn
ppm

DC06B001

67.0

68.4

1.40

0.40

786

161

1,615

244

DC06B012

198.10

199.00

0.90

0.03

135

568

1,415

1,515

DC06B012

199.00

200.40

1.40

1.69

>10,000

37,000

16,500

233

DC06B012

200.40

200.80

0.40

0.1

44

841

3360

5190

DC06B012

200.80

202.00

1.20

0.25

1,795

1,835

2,820

1,525

DC06B012

202.00

203.00

1.00

0.3

146

773

2,990

4,240

Total and average

4.90

0.56

>3,354.92

11,351.55

6,549.29

2,007.29

 

 

 

 

(1.14%)

(0.65%)

(0.20%)



Santa Edwiges

Starting in August, the underground workings of this mine were mapped and sampled. A total of 457 samples was collected along an access drift of 650 m cutting 4 mineralized structures ranging from 1.5 to 30 m wide. Five diamond drilling holes (ddh) totaling approximately 533 m were completed but no assays are available yet. Three holes were abandoned in fault zones and two holes intersected two different structures showing alteration and mineralization characterized by quartz, galena, sphalerite, pyrite and chalcopyrite over a width from 8 to 41 m in the Lavenderia vein and 17.9 m in the Tascate vein.


San Miguel and La Bamba
The San Miguel Mine and La Bamba former mines are optioned from Pershimco Resources.  San Miguel has 4 levels (100, 250, 300 and 500) of which the first three have been accessed, mapped and sampled and a total of 450 samples was collected. The first 3 levels are within the oxide zone. At the 100-level, 2 adjacent parallel zones (breccia and vein) extending N-S for 170 m have been identified. At the southern end of the level, the breccia zone ranges from 1.5 to 4 m in width, seven channel samples were collected along this zone. It returned an average of 565.7 g/t Ag, and the samples are:

 

59716

3.0 m

150 g/t Ag

59717

3.0 m

780 g/t Ag

59718

3.0 m

880 g/t Ag

59719

3.0 m

300 g/t Ag

59720

3.0 m

550 g/t Ag

59721

3.0 m

770 g/t Ag

59722

3.0 m

530 g/t Ag

 

The vein zone was channel-sampled along five different sections and returned an average of 228 g/t Ag over an average width of 2.36 m. 

 

415982

1.6 m

190 g/t Ag

415983

1.2 m

270 g/t Ag

59681

3.0 m

180 g/t Ag

59682

3.0 m

260 g/t Ag

59684

3.0 m

250 g/t Ag

 


At the 250-level, the same vein and breccia zones were identified and sampled. Near the shaft, six channel samples were collected across the breccia zone and returned an average of 221.7 g/t Ag as shown by the following samples:

 

59784

3.0 m

40 g/t Ag

59785

3.0 m

390 g/t Ag

59807

1.7 m

200 g/t Ag

59808

1.5 m

20 g/t Ag

59809

1.8 m

330 g/t Ag

59810

1.7 m

330 g/t Ag

 

The vein zone was channel-sampled along three sections for a distance of 20 m and averages 340 g/t Ag over an average width of 1.7 m.

 

59762

1.1 m

280 g/t Ag

59763

0.8 m

10 g/t Ag

 

 

 

59764

0.8 m

1,090 g/t Ag

59765

0.7 m

190 g/t Ag

 

 

 

59767

0.8 m

280 g/t Ag

59768

0.8 m

150 g/t Ag

 


On the 300-level, the vein zone is developed over a distance of 200 m and was identified and sampled on 3 sections. It averages 443.8 g/t Ag over an average width of 2.4 m.

 

South Face

59786

1.7 m

320 g/t Ag

59787

2.2 m

660 g/t Ag

Cut at 190 meters south of the shaft

59799

1.2 m

300 g/t Ag

59800

1.5 m

120 g/t Ag

Cut directly at the shaft

59796

0.9 m

550 g/t Ag

59797

0.6 m

200 g/t Ag

 



A total of 2,172 m was drilled in 11 ddh at San Miguel to test material easily accessible from the shaft below the 300-level. Except for two holes blocked on a fault, all holes cut the zones with the following results:

Drill Hole

From

To

Width

Ag
g/t

Pb
%

Zn
%

Cu
%

DC06B015

114.0

122.5

8.5

168

 

 

 

Including

114.0

116.0

2.0

288

 

 

 

And

116.0

119.0

3.0

25

 

 

 

And

119.0

120.0

1.0

254

 

 

 

And

120.0

122.0

2.0

31

 

 

 

And

122.0

122.5

0.5

380

 

 

 

DC06B017

121.05

122.20

1.15

809

3.3

2.5

0.7

DC06B018
In the upper-level zone

71.0

72.0

1.0

254

 

 

 

DC06B021

138.0

142.0

4.0

237

 

 

 

Including

138.0

139.0

1.0

299

 

 

 

And

139.0

140.0

1.0

274

 

 

 

And

140.0

141.0

1.0

267

 

 

 

And

141.0

142.0

1.0

107

 

 

 

DC06B023

56.0

57.0

1.0

26

1.0

3.9

 

DC06B024

126.0

134.0

8.0

158

 

 

 

Including

126.0

127.0

1.0

184

 

 

 

And

128.0

129.0

1.0

235

 

 

 

And

129.0

131.0

2.0

110

 

 

 

And

131.0

134.0

3.0

151

 

 

 

Drill holes DC06B026 and DC06B027 also cut the zones and results are pending.

La Bamba is an open cut 100 m long by 7 to 25 m wide and 50 m deep. It is located immediately south of San Miguel and is developed in the same structures, which extend for an additional 250 m. Surface mapping has identified those structures extending another 500 meters further south for a total of 1000 meters, with San Miguel extending 250 meters, La Bamba 250 meters and the newly-mapped surface expression extending an additional 500 meters.

A composite sample of 20 kilos collected from the bottom and the walls of the pit returned 220 g/t Ag.
A total of 3 ddh over 358 m of drilling has been completed to date. Results are pending.
Although the program has only been in progress for four months, significant silver mineralized rock has been identified and material from various portions of these mines will be processed at the Company’s Malpaso mill beginning in November 2006.  These early results support the interpretation that significant silver mineralization remains to be mined in the district.

The Company commissioned an independent 43-101 technical report to Scott Wilson Roscoe Postel, expected to be completed by the end of the year.

Mr. André St-Michel, engineer and Executive Vice-President of Dia Bras, is the qualified person within the meaning of NI43-101.

Method of analysis
All drill samples were assayed by ALS Chemex, North Vancouver, using ICP method while underground samples were assayed by AA method at the lab at the Malpaso Mill.

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”.

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

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.