Dia Bras Exploration Inc.
TSX VENTURE : DIB

Dia Bras Exploration Inc.

January 21, 2008 08:33 ET

Dia Bras Intersects 73.8 Metres Grading 1.2% Cu and 41 g/t Ag at El Gallo Area and Reports on its Last Drilling Results at its Bolivar Property

MONTREAL, QUEBEC--(Marketwire - Jan. 21, 2008) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to announce the widest Lower Skarn intersection in the El Gallo area and to provide an update on the 2007 exploration program at its Bolivar property as well as new drill results.

Hole DB07B225 intersected 120 metres core length of Lower Skarn-type mineralisation, in which a number of copper-bearing intersections were encountered, including a 73.8 metre section core length (69.4 metre estimated true width) averaging 1.2% Cu, 0.1% Pb, 41 g/t Ag and 0.1 g/t Au. This hole intersected the thickest section of mineralised Lower Skarn to date. The hole was drilled on section 9,450 and indicates a thickening of the mineralised body in this area.

Maps are available on the Marketwire website at the following addresses: http://www.ccnmatthews.com/docs/BoliMineArea.pdf and http://www.ccnmatthews.com/docs/ELgarro_diabras.pdf

Bolivar Alta Ley (Mine site) Area

Both surface and underground diamond core drilling at Bolivar Alta Ley were aimed at continuing to define the mineralized trends (Rosario, Fernandez) while also developing potential new zones of mineralization, as well as further delineating the Selena, Titanic and Rosario massive sulfide lenses.

In this area, some 22 surface drill holes totaling 4,708 metres and 99 underground holes totaling 8,256 metres were completed in 2007, for a total of 12,964 metres.

Three significant surface drill holes are of particular interest in this area. Holes DB07200, 213 and 214 have all intersected at depth the Upper and Lower Skarn horizons in an area previously untested, to the ESE of the actual mine workings.

Hole DB07B200, drilled to the east of the Selena massive sulfide lens, at an azimuth of 90 degrees and a dip of -80 degrees, intersected 8.3 metres of 0.3% Cu, 6.1% Zn, 73 g/t Ag and 0.03 g/t Au from 436.0 to 444.3 metres core length (estimated true width of 5.3 metres). This hole opens potentially new ground for exploration to the east of the main deposit in the Upper Skarn horizon.

Hole DB07B213, drilled some 100 metres to the south of hole DB07B200, intersected apparently the same mineralized horizon as hole 200. This hole was drilled at an azimuth of 90 degrees, at a dip of -69 degrees, and appears to confirm the presence of a mineralized lens along an ESE structure, some 150 metres away from the main deposit, and at least 100 metres deeper than the known occurrence at Alta Ley. The best intersection in this hole returned 8.1% Cu, 14.4% Zn, 215 g/t Ag and 0.16 g/t Au from 474.0 to 476.2 metres core length (estimated true width 1.5 metres).

Hole DB07B214 intersected the deepest Lower Skarn mineralization to date, at 1478m elevation (from 536 to 541 metres core length). The intersection averages 2.6% Zn and 13.8 g/t Ag over 5.0 metres core length (4.5 metres true width). Interestingly, this intercept does not carry copper mineralization, as expected, but rather a zinc-rich mineralization within magnetite-bearing skarn, possibly due to its distal nature.

The best underground hole was DB07BM120, which extends the down plunge extension of the Selena massive sulphide lens. The hole returned a number of significant intersections, including 5.3 metres (core length) of 1.6% Cu, 13.5% Zn and 15.2 g/t Ag.

El Gallo Area

Drilling in the El Gallo area continues to intersect widespread disseminated and stringer copper mineralization in the magnetite-bearing Lower Skarn and high-grade zinc in the Upper Skarn.

Since the inception of the exploration program at Bolivar in 2003, some 30 holes totalling 6,492 metres of diamond core drilling (17 surface diamond drill holes totalling 4,518 metres in 2007) have been completed in this area.

Apart from hole DB07B225, other interesting intersections were encountered, as in hole DB07B211, which intersected 1.7% Cu over 13.2 metres core length from 234.8 to 248.0 (estimated true width 4.9 metres) and in hole DB07B218, which intersected 3.4% Cu, 0.7% Zn and 124 g/t Ag over 12.6 metres core length from 243.5 to 256.1 (11.8 metres estimated true width).

El Val Area

In the El Val - La Montura area, 4,114 metres in 18 surface diamond drill holes were completed in 2007. This first exploration drilling program was aimed at identifying the potential of this area and attempted to determine either 1) if the known Bolivar stratigraphy could extend as far SE as the El Val showing or 2) if this prospect was part of a new mineralised trend.

The best intersection in this area was in hole DB07B215 (reported in October 2007, see PR #28). New drilling indicates that the mineralised trend does in fact extend from La Montura to El Val, with significant metal build up close to the western side of the area - along the scree face of the cliff.

Assay results for holes DB07B222, DB07B226 and DB07B229, all drilled in the El Val area are still awaited and will be published as soon as received. All holes intersected copper-zinc mineralisation of the Upper and Lower Skarn type at shallow depth, although over narrow widths.



Bolivar Assay Results
-------------------------------------------------------------------------
Cu Zn Au Ag Pb Fe True
From To Length (%) (%) g/t g/t (%) (%) IN Width
-------------------------------------------------------------------------
BOLIVAR
ALTA LEY SECTOR
-------------------------------------------------------------------------
DB07B200 436.0 444.3 8.3 0.3 6.1 0.03 73 0.3 5.3 US 5.3
incl 436.0 437.0 1.0 0.9 14.9 0.04 98 0.1 4.0 US 0.6
509.6 511.7 2.1 3.0 0.2 0.62 28 0.0 33.3 LS 1.3
544.6 552.0 8.0 0.1 1.5 0.01 8 0.0 14.0 LS 4.0
incl 547.1 548.2 1.1 0.0 5.6 0.01 1 0.0 30.1 LS 0.6
-------------------------------------------------------------------------
DB07B206 204.2 208.0 3.9 0.6 5.2 0.13 47 0.1 4.7 US 3.3
212.4 215.4 3.0 1.9 8.7 0.74 56 0.1 9.4 US 2.6
247.2 252.0 4.8 1.8 0.2 0.04 26 0.0 9.5 US 4.2
-------------------------------------------------------------------------
DB07B207 502.3 505.2 2.9 0.3 0.8 0.02 4 0.0 10.7 US 2.5
-------------------------------------------------------------------------
DB07B213 177.7 180.0 2.3 0.2 6.9 0.04 6 0.0 2.6 US 1.6
474.0 476.2 2.2 8.1 14.4 0.16 215 0.2 8.9 US 1.5
-------------------------------------------------------------------------
DB07B214 536.0 541.0 5.0 0.0 2.6 0.01 1 0.0 13.8 LS 4.0
-------------------------------------------------------------------------
DB07B216(i) 371.6 378.0 6.4 0.9 0.6 0.21 19 0.0 23.5 LS 4.9
PR#27
-------------------------------------------------------------------------
DB07B217
Aborted
-------------------------------------------------------------------------
DB07B219 463.8 476.0 12.3 0.6 2.8 0.06 26 0.0 17.3 LS 8.7
-------------------------------------------------------------------------
DB07B220 US
In process
-------------------------------------------------------------------------
EL GALLO SECTOR
-------------------------------------------------------------------------
DB07B205 102.2 105.0 2.9 1.0 0.0 0.02 13 0.0 9.3 US 2.5
175.9 181.1 5.2 1.1 0.0 0.55 19 0.0 14.3 LS 4.5
-------------------------------------------------------------------------
DB07B210 165.5 170.0 4.5 0.8 0.1 0.20 27 0.0 15.6 LS 3.9
-------------------------------------------------------------------------
DB07B211 234.8 248.0 13.2 1.7 0.2 0.12 32 0.0 18.5 LS 4.9
-------------------------------------------------------------------------
DB07B218 134.5 140.0 5.5 0.6 4.5 0.22 10 0.0 8.1 US 3.9
221.9 233.0 11.1 1.6 0.1 0.64 24 0.0 19.0 LS 10.4
243.5 256.1 12.6 3.4 0.7 0.09 124 0.2 8.3 US 11.8
271.4 274.8 3.4 1.2 0.1 0.04 15 0.0 4.0 US 3.2
-------------------------------------------------------------------------
DB07B221 266.7 271.6 4.9 1.8 0.0 0.03 28 0.0 10.7 LS 4.4
-------------------------------------------------------------------------
DB07B223 167.0 169.4 2.4 0.5 3.2 0.03 23 0.0 8.0 US 2.4
El Gallo 251.8 260.0 8.2 1.3 0.2 0.27 26 0.0 28.6 LS 8.0
Partial results
-------------------------------------------------------------------------
DB07B224
Aborted
-------------------------------------------------------------------------
DB07B225 184.1 198.3 14.2 0.8 0.2 0.02 16 0.1 12.2 LS 13.3
Incl. 185.6 187.4 1.8 0.6 0.3 0.04 41 0.0 11.8
Incl. 190.5 195.3 4.8 0.9 0.3 0.02 24 0.1 15.2

And 232.3 306.1 73.8 1.2 0.0 0.1 41 0.1 9.7 LS 69.4
Incl. 233.8 244.5 10.7 1.3 0.0 0.37 29 0.0 20.4
Incl. 255.3 270.5 15.2 1.8 0.0 0.14 59 0.1 11.4
Incl. 291.1 297.5 6.4 2.1 0.2 0.03 49 0.5 5.5
-------------------------------------------------------------------------
EL VAL SECTOR
-------------------------------------------------------------------------
DB07B209(i) 92.7 99.3 6.6 0.0 2.6 0.08 4 0.0 6.4 US 5.7
101.6 102.9 1.4 0.2 1.5 0.01 15 0.0 6.4 US 1.2
114.3 116.3 2.0 0.1 7.7 0.03 11 0.0 5.8 US 1.7
Partially
disclosed
in Sept 25th PR
-------------------------------------------------------------------------
DB07B212 112.1 116.1 4.1 1.4 5.7 0.03 36 0.0 8.0 US 3.5
118.9 120.3 1.4 0.8 0.1 0.01 35 0.0 7.7 US 1.2
-------------------------------------------------------------------------
LA NARIZONA
-------------------------------------------------------------------------
DB07B203
No mineralisation
-------------------------------------------------------------------------
LA MONTURA
-------------------------------------------------------------------------
DB07B22 410.2 411.8 1.6 0.9 2.7 0.01 5 0.0 13.1 LS 1.1
Partial results
-------------------------------------------------------------------------

(i) Previously announced


2007 Drill Program

In 2007, the Bolivar property was subject to a major drilling program that allowed for the upgrade of the resource base (see PR #25 of September 25, 2007) and the completion of a Preliminary Economic Assessment study which indicated that the project could sustain a 1,000-ton-per-day mill if the inferred resource of the Upper and Lower Skarn (2,035,000 tonnes at 2.53% CuEq - see PR #30 of November 16, 2007) could be upgraded to Measured and Indicated. Dia Bras is working actively to achieve that goal.

As of December 31st. some 25,189 metres of diamond core drilling have been completed on the Bolivar project, 17 005m from surface and 8 184m from underground.



------------------------------------------------------------------------
Month Jan. Feb. Mar. Apr. May June
------------------------------------------------------------------------
Mine 615.0 302.4 911.0 456.5 833.1 340.6
------------------------------------------------------------------------
Surface 371.0 1,560.0 1,239.0 1,299.0 1,094.0 1,237.0
------------------------------------------------------------------------
Total 986.0 1,862.4 2,150.0 1,755.5 1,927.1 1,577.6
------------------------------------------------------------------------

------------------------------------------------------------------------
Month July Aug. Sept. Oct. Nov. Dec. Total
------------------------------------------------------------------------
Mine 648.0 663.0 1,257.0 901.0 724.5 532.0 8,184
------------------------------------------------------------------------
Surface 1,246.0 1,714.8 2,452.0 1,800.0 1,734.0 1,258.0 17,004
------------------------------------------------------------------------
Total 1,894.0 2,377.8 3,709.0 2,701.0 2,458.5 1,790.0 25,188
------------------------------------------------------------------------


Method of analysis

Samples were prepared at the Chemex lab facility in Chihuahua, Mexico and analyzed by ICP and AA methods at their facilities in Vancouver, Canada.

Quality control

Diamond drill samples sent for analysis consist of half NQ-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 Chemex. 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 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 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.

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

Contact Information

  • Dia Bras Exploration
    Thomas L. Robyn
    Executive Chairman
    514-393-8875
    or
    Dia Bras Exploration
    Daniel Tellechea
    President & CEO
    514-393-8875
    www.diabras.com