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Dia Bras Reports More High-Grade Silver at Cusi
Published : February 24, 2011

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Mots clés associés :   Canada | Copper | Dia Bras | G Mexico | Zinc |

TORONTO, ONTARIO--(Marketwire - Feb. 24, 2011) - Dia Bras Exploration Inc. (News - Market indicators) ("Dia Bras" or the "Company") is pleased to report that continued drilling in support of mine planning at its 11,319 hectare Cusi silver project has returned more significant results, with 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 2011. 

"Results from the historic San Juan mine show that significant areas of the vein system are un-mined", states Daniel Tellechea, President and CEO of Dia Bras. "Mapping and drilling of the area demonstrates that the vein system could have major lateral extent, plus the presence of gold at San Juan is especially encouraging."

A vein map of the Santa Eduwiges – San Juan area is shown in Figure 1 (http://www.diabras.com/files/media/2c332_Vein%20Map%20Santa%20Eduwiges%20to%20San%20Juan.JPG). Locations of the San Juan drill holes reported here are shown in Figure 2 (http://www.diabras.com/files/media/0c40d_Drill%20hole%20location%20map%20w%20Ag%20Pb%20Zn.JPG). The low lead and zinc assay results from the San Juan area indicate that this vein represents a high-level portion of the low sulfidation epithermal system, as compared to the Santa Eduwiges veins that on average contain percent levels of lead and zinc. These assay results indicate that there is significant depth potential to the San Juan silver-rich vein.

Assay results from the three areas are shown in the tables below:

San Juan Area

Hole ID* From
(m)
To
(m)
Interval
(m)
Est.
True
Width (m)
Au
(g/t)
Ag
(g/t)
Pb
(%)
Zn
(%)
Vein
297 105.00 109.60 4.60 1.72 1.96 298 0.17 0.23 San Juan
302 44.80 46.00 1.20 0.78 AP 185 0.01 0.03 "
and 49.55 53.00 3.45 2.23 0.55 314 0.04 0.06 "
306 183.0 186.00 3.00 0.52 AP 165 3.20 3.20 "
309 65.00 65.55 0.55 0.29 AP 574 0.23 0.08 "
311 71.20 77.20 6.00 2.09 AP 174 0.03 0.03 "
326 79.30 81.00 1.70 0.40 AP 169 0.27 0.22 "
327 117.40 119.30 1.90 0.48 AP 167 0.54 0.09 "
329 72.15 76.00 3.85 1.72 AP 153 0.02 0.07 "
333 52.60 53.60 1.00 0.58 AP 166 0.03 0.08 "
334 73.65 78.75 5.10 1.84 AP 311 0.38 0.41 "
336 95.25 108.00 12.80 4.61 AP 151 0.04 0.06 "
340 180.00 182.60 2.60 0.94 AP 214 0.25 0.17 "
344 85.00 87.20 2.20 0.80 AP 140 0.02 0.03 "
and 93.70 95.30 1.60 0.58 AP 372 0.12 0.18 "

* All holes have the prefix DC10B

AP - Assays Pending

Promontorio Area

Hole ID From
(m)
To
(m)
Interval
(m)
Est.
True
Width (m)
Ag
(g/t)
Pb
(%)
Zn
(%)
Vein
3351 192.30 195.50 3.20 1.16 294 1.66 2.56 El
Gallo
3371 116.00 118.50 2.50 0.90 309 0.39 0.25 "
3432 164.35 169.45 5.10 3.64 149 0.29 0.21 "
and 173.00 175.80 2.80 2.00 286 0.75 0.83 "
and 180.60 184.50 3.90 2.78 446 0.62 0.58 "
1: prefix DC10B
2: prefix DC11B

Santa Eduwiges Area

Hole ID* From
(m)
To
(m)
Interval
(m)
Est.
True
Width (m)
Ag
(g/t)
Pb
(%)
Zn
(%)
Vein
339 145.10 145.35 0.25 0.18 298 0.47 1.25 Santa Marina
and 199.10 199.35 0.25 0.18 742 >20 3.55 "

* 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 analyzed 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.

Unrelated Matter

The Company regrets to report that one of its security guards at the site of the Piedras Verdes Reservoir was killed by trespassers while on duty at the site. After an on site investigation by its forensic medical examiner, the Mexican federal agency that is commissioned to investigate homicides, La Agencia Federal de Investigaciones en Mexico, has determined that the death was not related to work activities. Dia Bras wishes to extend its condolences to the family of the deceased.

About Dia Bras

Dia Bras is a Canadian exploration mining company focused on precious and base metals in Chihuahua State and other areas of northern Mexico. The Company is pursuing the development and exploration of its most advanced assets – the Bolivar Property (copper‐zinc‐silver) and the Cusi Property (silver). Dia Bras is also exploring several precious metal targets such as La Cascada project at the Bolivar Property, the Las Coloradas project at Melchor Ocampo (Zacatecas State), the Bacerac Property (Sonora State) and the La Verde project at the Batopilas Property (Chihuahua State). 

The Company's shares trade 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. 

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

For more 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
www.diabras.com
Données et statistiques pour les pays mentionnés : Canada | Tous
Cours de l'or et de l'argent pour les pays mentionnés : Canada | Tous

Sierra Metals Inc.

PRODUCTEUR
CODE : DIB.V
ISIN : CA25244F1099
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Sierra Metals est une société de production minière d'argent et de zinc basée au Canada.

Sierra Metals est productrice d'argent, de zinc, de cuivre, de fer, d'or et de plomb au Mexique, et détient divers projets d'exploration au Mexique.

Ses principaux projets en production sont BOLIVAR et CUSI au Mexique et ses principaux projets en exploration sont ARECHUYVO, MELCHOR OCAMPO, MALPASO MILL et BATOPILAS au Mexique.

Sierra Metals est cotée au Canada, aux Etats-Unis D'Amerique et en Allemagne. Sa capitalisation boursière aujourd'hui est 388,7 millions CA$ (357,5 millions US$, 262,4 millions €).

La valeur de son action a atteint son plus bas niveau récent le 19 décembre 2008 à 0,04 CA$, et son plus haut niveau récent le 11 mars 2011 à 3,92 CA$.

Sierra Metals possède 161 939 959 actions en circulation.

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