Dia Bras Exploration Inc.
TSX VENTURE : DIB

Dia Bras Exploration Inc.

January 30, 2008 09:09 ET

Dia Bras Announces High-Grade Silver Values at the Promontorio and Santa Edwiges Mines of the Cusi Project

MONTREAL, QUEBEC--(Marketwire - Jan. 30, 2008) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to report results from its ongoing exploration drilling program on the Cusi property, located in the State of Chihuahua, Mexico.

PROMONTORIO SECTOR:

The silver-rich Promontorio sector continues to deliver high-grade silver intersections over economic widths and they are particularly encouraging. The best results from the last batch of drill assays of the year come from hole DC07B151 which intersected a number of high-grade veins. The best interval averaged 528 g/t Ag, 0.1 g/t Au, 0.1% Cu, 0.2% Pb and 0.2% Zn over 15 metres core length. This length does not represent the true width, since the drill hole was drilled directly along the dip of the veins, which vary in thickness from 10 to 25 cm. The estimated true width is 2.6 metres. Also, this hole intersected Veta A, which averages 704 g/t Ag, 0.1 g/t Au, 0.2% Cu, 1.2% Pb and 1.0% Zn over 5.3 metres of core length (estimated true width of 3.7 metres).

To view the Promontorio longitudinal composite, please visit the following link: http://www.ccnmatthews.com/docs/MAP0130.pdf

Another important hole in this sector is DC07B132, results of which were partly released in December 2007. The hole intersected a series of veins (see press release December 13, 2007). The hole intersected 6 metres core length (estimated true width of 4.2 metres) of 141 g/t Ag, 0.19 g/t Au, 0.5% Pb and 0.4% Zn. Mineralization at Promontorio is associated with fracture-filled, low-sulphidation veins with high precious-metals grades, typical of a high level epithermal system. The most prominent vein in the sector is Veta A, and Dia Bras has reported high historical grades as well as the Company's drill core data from this vein and from its intersections with crosscutting subsidiary veins (see press release June 7, 2007).

SANTA EDWIGES - SAN ANTONIO -- SAN MARINA SECTOR

The best results in this sector are from hole DC07B139, drilled to test the downdip extension of the San Marina mineralized structure, which intersected 3.5 metres core length (true width of 2.5 metres) of 0.4 g/t Au, 269 g/t Ag, 0.1% Cu, 3.7% Pb and 5.3% Zn.

DC07B143, drilled to test the Santa Edwiges structure, intersected 2.8 metres core length (true width of 2.0 metres) of 2.1 g/t Au, 187 g/t Ag, 1.1% Pb and 0.6% Zn.

The Santa Edwiges -- San Antonio -- San Marina sector consists of multiple fracture-filled quartz-carbonate veins containing high sulphide contents that are typical of the middle portion (Pb-Zn-Cu) of a zoned, low-sulphidation epithermal vein. This middle portion of the vein transitions upwards to the precious metal (Au, Ag) portion of the vein.

To view Table: Recent drilling results from the Promontorio and Santa Edwiges please visit the following link: http://www.ccnmatthews.com/docs/DRILL0130.pdf

2007 DRILL PROGRAM

Since inception of the drilling program in the Cusi District in March 2007, more than 21,800 metres of diamond drilling have been completed to date, in addition to more than 10,000 metres drilled in 2006. Surface mapping (see press release of November 15, 2007) and surface diamond core drilling (see press release of September 13, 2007) have demonstrated the importance of the Promontorio and Santa Edwiges - San Antonio - San Marina sectors subsequent to a resource evaluation.



----------------------------------------------------------------
Metres per zone
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Zone Jan. Feb. Mar. Apr. May June July
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St. Edwiges 0 0 0 9 19 0 0
Underground 0 0 0 9 19 0 0
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Promontorio 0 0 0 329 499 967 460
Santa Edwiges 179 0 281 401 0 1,640 290
Santa Marina 0 0 0 1,056.5 1,423 0 0
San Nicolas 276.8 893 0 0 0 0 0
San Antonio 0 184 1547 0 0 0 0
La Bamba 0 608 218 0 0 0 0
Total Surface 455.8 1,685 2,046 1,786,5 1,922 2,607 750
----------------------------------------------------------------
Grand total: 455.8 1,685 2,046 1,795.5 1,941 2,607 750
----------------------------------------------------------------

-----------------------------------------------------------
Metres per zone
-----------------------------------------------------------
Zone Aug. Sept. Oct. Nov. Dec. Total
-----------------------------------------------------------
St. Edwiges 0 129 695 351 494 1,697
Underground 0 129 695 351 494 1,697
-----------------------------------------------------------
Promontorio 1114 584 871 905 916 6,645
Santa Edwiges 438 849 1097 921 574 6,670
Santa Marina 588 0 0 6 0 3,073.5
San Nicolas 0 0 0 0 0 1,169.8
San Antonio 0 0 0 0 0 1731
La Bamba 0 0 0 0 0 826
Total Surface 2,140 1,433 1,968 1,832 1,490 20,115.3
-----------------------------------------------------------
Grand total: 2,140 1,562 2,663 2,183 1,984 21,812.3
-----------------------------------------------------------


Method of analysis

Half split diamond drill core samples sent for analysis were prepared by ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Ag by AA on 50 g split sample at the ALS Chemex Vancouver laboratory. Assays for Pb, Zn and Cu are done by Induction Coupled Plasma (ICP) at ALS Chemex, Vancouver.

Quality control

The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in Roscoe Postle Associates' 43-101 report of December 2006 on Cusi.

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
    Chairman
    514-393-8875 ext. 241
    or
    Dia Bras Exploration
    Daniel Tellechea
    President & CEO
    514-393-8875 ext. 241
    www.diabras.com