Press Releases

Dia Bras begins a second round of drilling to expand resources of the central mine orebodies of its Yauricocha Property, Peru

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TSX Venture Exchange - DIB
Bolsa de Valores de Lima - DIB
# 34-2012

TORONTO, Oct. 12, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSX-V:DIB) (BVL: DIB) ("Dia Bras" or the "Company") is pleased to announce that it has commenced another resource-expansion drilling programme designed to increase the resource tonnage and categories of the Antacaca Sur, Rosaura and Catas orebodies at the Yauricocha mine in Peru.  Three new diamond holes have been drilled in the Antacaca orebody, 8 in the Rosaura orebody, and 19 holes in the Catas orebody.  These deposits are within the Central Mine Area where the Company's mining is focused.

Press Release Highlights:
  • Fifteen of the nineteen new drill holes in the Catas orebody returned significant results as did seventeen of the drill holes in the Antacaca-Rosaura orebodies.
  • An IP-resistivity conducted along the Yauricocha Fault has detected seven strong chargeability anomalies.  Drilling of the first anomaly has commenced.

Daniel Tellechea, President and CEO of Dia Bras, commented: "This second drilling programme being conducted by the Company is designed to expand the mine's resources and demonstrate how extensive mineralization is in the Yauricocha Central Mine Area.  We expect to increase our resources and issue an updated resource calculation early next year."

Recent Drilling Results

The first resource expansion drilling of the Catas and Rosaura-Antacaca orebodies resulted in reserves being more than tripled (see press release of September 6, 2012) to almost 6 million tonnes of Measured and Indicated resources within which are 4.2 million tonnes of Proven and Probable Reserves.  The objective of this round of drilling is to increase further the total resource tonnage of these orebodies, increase the tonnes in Measured & Indicated Resources, and demonstrate the longer mine life expected by the Company.

The Company is employing two underground core rigs for this resource-expansion program.  One is drilling to greater depths under the Cuye-Catas orebodies while the second is drilling the Rosaura-Antacaca Sur orebodies to depth.

Examination of the attached long section shows that potentially-economic intercepts have been made under the known mineralization of the Cuye-Catas zone and the Antacaca-Rosaura-Antacaca Sur zone.  The attached long section shows the piercing points of the drill holes reported herein and assay results from recent drill holes are shown in the tables below:

Antacaca Sur Orebody Level 770 Drill Results

Hole
#*
To-From
(m)
Core
Length (m)
Est. True
Width (m)
g/t Ag% Pb% Cu% ZnAu g/tMineralization
Type
0997.0-105.08.07.175.83.840.348.150.61Polymetallic
and105.0-108.03.02.260.80.452.330.860.28Copper
1093.6-109.015.412.248.85.700.4313.760.54Polymetallic
and109.0-114.65.63.186.00.271.870.430.47Copper
11101.0-104.03.02.691.52.830.387.740.49Pyritic
and104.0-118.014.012.682.40.480.580.870.38"
and118.0-126.08.06.681.30.173.630.300.59Copper
* All holes have the prefix Ant Sur 11-12-

Rosaura Orebody Level 770 Drill Results

Hole
#*
To-From
(m)
Core
Length (m)
Est. True
Width (m)
g/t Ag% Pb% Cu% ZnAu g/tMineralization
Type
0191.4-102.310.98.1124.52.382.296.640.56Polymetallic
and122.0-131.09.08.235.80.180.220.690.33Pyritic
02103.3-115.812.510.933.34.310.258.670.61Polymetallic
and124.9-135.4510.557.770.06.120.7016.210.50"
0388.7-97.08.37.2104.82.880.669.480.30"
and97.0-101.54.53.9262.60.864.461.880.48Copper
and127.3-135.07.76.583.110.150.6218.230.33Polymetallic
0497.8-102.64.84.185.31.210.299.980.22"
and106.7-111.04.33.829.33.280.255.120.96"
and143.3-145.92.62.163.22.830.033.630.14"
and150.3-157.77.46.223.31.100.142.040.99"
05136.6-138.11.51.234.52.880.105.920.33"
and143.0-145.02.01.684.00.790.265.130.54"
and146.0-149.03.02.6207.10.035.290.121.01Copper
06145.0-147.02.01.6270.20.106.240.180.00"
0787.0-97.010.08.464.83.0804318.000.91Polymetallic
and97.0-105.68.67.2128.70.274.550.621.48Copper
0889.3-103.013.711.980.52.231.096.390.66Polymetallic
and103.0-115.012.010.296.10.183.900.330.43Copper
* All holes have the prefix 11-12- and suffix NV.770

Rosaura Orebody Level 820 Drill Results

Hole
#*
To-From
(m)
Core
Length (m)
Est. True
Width (m)
g/t Ag% Pb% Cu% ZnAu g/tMineralization
Type
23157.1-170.113.08.629.30.090.220.161.07Pyritic
24169.0-171.02.01.635.90.310.290.570.94Polymetallic
and171.0-175.34.33.772.71.880.136.131.52"
and175.3-181.05.75.118.30160.120.292.27"
25179.1-180.31.21.058.50.170.2211.750.42Polymetallic
and191.0-194.03.02.887.02.760.727.192.76"
and194.0-197.63.63.462.70.150.620.471.48"
26225.5-229.13.63.28.30.080.111.460.24Pyritic
2765.2-69.44.23.9198.62.120.469.771.01Polymetallic
and195.0-198.33.32.637.60.211.540.060.77Copper
28183.7-185.21.51.137.85.730.2111.080.87Polymetallic
and188.5-190.92.42.062.32.750.775.401.53"
and201.6-204.93.32.946.42.050.227.250.38"
and215.8-222.26.46.038.41.150.374.370.42"
and223.2-225.32.11.746.60.041.470.101.66Copper
* All holes have the prefix 12-12 and suffix NV. 820

Catas Orebody Level 820 Drill Results:

Hole
#*
To-From
(m)
Core
Length (m)
Est. True
Width (m)
g/t Ag% Pb% Cu% ZnAu g/tMineralization
Type
11167.6-177.09.4 69.10.480.325.310.94Polymetallic
14186.5-192.05.54.864.60.560.722.000.54Pyritic
15121.0-127.06.05.343.90.261.350.880.63Copper
1660.0-70.010.09.292.30.073.640.380.58"
and70.0-75.05.04.250.20.070.450.470.37Pyritic
and75.0-79.64.63.8161.60.280.464.360.31Copper
and87.8-90.92.21.449.70.660.113.240.28"
and94.0-96.02.01.246.52.370.1613.410.20Pyritic
1783.3-86.02.72.4134.80.183.441.271.18Copper
and87.2-93.66.46.145.30.120.641.520.57Pyritic
1899.0-100.01.00.729.00.050.3513.270.58Polymetallic
19110.0-111.41.41.057.10.100.374.100.34Polymetallic
2196.7-100.03.32.923.30.120.143.410.13Polymetallic
24101.7-105.03.33.099.20.850.388.360.46Polymetallic
27125.7-132.77.06.19.90.140.142.870.34Polymetallic
28144.7-148.53.83.159.40.370.880.520.39Pyritic
and150.3-154.03.73.0103.90.541.213.090.89Polymetallic
29164.3-171.06.76.1145.10.083.640.410.36Copper
and175.0-177.02.01.4115.00.061.981.180.54Pyritic
and178.0-181.03.02.447.70.480.493.160.47Polymetallic
and191.6-194.02.41.892.90.180.3710.330.38"
30174.0-181.07.06.2124.50.232.490.710.09Copper
and184.0-189.05.04.2151.10.042.150.360.05"
31161.6-163.82.21.4115.40.311.610.880.12Copper
and170.9-171.91.00.2206.70.431.0110.671.00Polymetallic
32160.2-164.74.54.3303.80.543.531.780.22Copper
and196.1-198.32.22.044.90.110.1314.860.85Polymetallic
* All holes have the prefix CAT-12-12- and suffix NV. 820

Exploration Programme

The Company has completed an IP-resistivity survey along the Yauricocha Fault from Cachi-Cachi to southeast of Adrico, a distance of about four kilometres.  Seven strong IP anomalies were detected and drilling of the anomalies has begun.  The first surface drill hole in this program is in progress.  A second phase of IP-resistivity surveying will be done further to the southeast along the Yauricocha Fault early in 2013.

Exploration work in other areas, such as Ipillo (silver-zinc-lead) and Carmencita (silver-gold-lead oxides), will commence when the Company has completed negotiations with local authorities for access on the surface.

Method of Analysis

Samples are prepared at the Yauricocha lab facility in the Chumpe mill, which is on site. Core and channel samples from the mine are assayed utilizing one of two procedures.  Silver, lead, zinc, and copper are assayed by atomic absorption. Gold is fire-assayed with an atomic absorption finish.  Diamond drill samples sent for analysis consist of half NQ-size and BQ-size diamond core split on site.

Quality Assurance

The quality assurance-quality control (QA-QC) program employed by Dia Bras has been described in detail in the NI 43-101 report on Yauricocha of May 25, 2011, prepared by Gustavson Associates of Denver, which is available for review on SEDAR.

The technical content of this news release has been approved by Thomas L. Robyn, Ph.D., CPG, RPG, a Qualified Person as defined in NI 43-101 and Head of Exploration for Dia Bras Exploration, Inc.

About Dia Bras

Dia Bras Exploration is a Canadian mining company focused on precious and base metals in Chihuahua State, other areas of northern Mexico, and at its Yauricocha silver-lead-zinc-copper-gold mine in Peru. The Company is accelerating exploration at the Yauricocha property as well as pursuing the development and exploration of its most advanced Mexican assets - the Bolivar Property (copper‐zinc‐silver) and the Cusi Property (silver) and is exploring in Mexico several precious metal targets such as La Sidra gold project at the Bolivar Property, the Las Coloradas silver project at Melchor Ocampo (Zacatecas State), the Bacerac silver project (Sonora State), and the La Verde gold project at the Batopilas Property (Chihuahua State).  Dia Bras is also exploring base metal projects in Mexico such as the Corralitos intrusion-hosted molybdenum deposit (Chihuahua State).

The Company's shares trade on the Bolsa de Valores de Lima and TSX Venture Exchange under the symbol "DIB".

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.

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.

 

 

SOURCE Dia Bras Exploration Inc.

Image with caption: "Yauricocha Longitudinal Section (CNW Group/Dia Bras Exploration Inc.)". Image available at: http://photos.newswire.ca/images/download/20121012_C6208_PHOTO_EN_19139.jpg