Oro Mining Ltd.
TSX VENTURE : OGR

Oro Mining Ltd.

July 21, 2011 08:30 ET

Oro Mining Drills 4.1 g/t Gold Over 32 Metres at Taunus Project, Mexico

VANCOUVER, BRITISH COLUMBIA--(Marketwire - July 21, 2011) - Oro Mining Ltd. ("Oro Mining" or the "Company"), (TSX VENTURE:OGR) continues to report positive drill results for sonic holes SN15 to SN22 on its Taunus Project. Highlights are as follows:

  • Sonic drill hole SN22 intersected 32 metres of 4.1 g/t gold in the HS Zone, located 100 metres south of SN13 (167 metres of 2 g/t gold, previously announced on May 5, 2011).
  • The recent drill results continue to indicate areas with substantial vertical continuity of the gold mineralization, connecting the Eldorado and HS Zones (see cross sections).
  • Other sonic holes returned favorable results including SN15 (26 metres of 3.4 g/t gold in the HS Zone), SN16 (72 metres of 0.83 g/t gold in-between Eldorado and HS Zones), SN17 (23 metres of 1.9 g/t gold in the Eldorado Zone), SN19 (12.7 metres of 8.1 g/t gold in the HS Zone), and SN20 (23 metres of 1.6 g/t gold in the Eldorado Zone and 16 metres of 2.5 g/t gold above the HS Zone).

The current sonic drill program, which has proven to be the only effective method of achieving high core recovery from the Taunus deposit, continues to identify previously unrecognized mineralization which was historically untested prior to the dewatering of the pit. The Company has completed 3,400 metres in thirty-six sonic holes and anticipates that this stage of drilling should be complete by the end of August.

Section and plan views of the latest sonic drill results can be referenced on the Company's web site: Trinidad Gold Project - Oro Mining (http://www.oromining.com/section.asp?pageid=15020).

The objectives of the sonic drill program are to increase the Taunus resource base by: 1) increasing the gold grade of the Eldorado and HS zones; and 2) drilling untested areas below the Eldorado zone, targeting potential high-grade gold feeders, as well as offsets and extensions to the zones. Results of the sonic drilling to date are showing that both objectives are likely to be achieved in this drill campaign.

Select gold assay composites:

SONIC HOLE DEPTH FROM TO INTERVAL GOLD GRADE
HOLE (m) (m) (m) (m) (g/t)
SN15 188.5 13.1 20.0 6.9 0.29
102.3 108.8 6.5 1.66
155.0 180.6 25.6 3.37
SN16 126.2 8.1 18.5 10.4 0.87
23.2 95.6 72.4 0.83
including 37.0 67.9 30.9 1.03
including 70.1 85.4 15.3 1.04
100.6 105.0 4.4 0.83
SN17 180.5 0 22.8 22.8 1.91
including 13.1 22.8 9.7 3.45
119.3 128.6 9.3 0.33
143.2 149.0 5.8 0.42
SN18 183.9 8.3 13.6 5.3 0.16
105.5 113.4 7.9 0.30
SN19 161.0 7.1 27.6 20.5 0.32
113.3 126.0 12.7 8.07
SN20 194.7 1.2 24.2 23.0 1.58
including 2.4 18.4 16.0 2.04
137.2 141.3 4.1 0.81
147.0 158.7 11.7 0.54
169.0 184.9 15.9 2.46
SN21 190.0 0 23.2 23.2 1.06
SN22 199.0 12.5 18.3 5.8 0.69
125.5 157.5 32.0 4.07
Note: the reported intervals are down-hole depth and may not represent true width.

The Taunus gold deposit is interpreted to be a gold-rich epithermal system located in a dilatational jog which has formed a local pull-apart basin. The general shape of the gold-bearing zones is analogous to a vertical funnel or pipe-like geometry, with low angle portions of the system branching off. Gold is hosted in unconsolidated, clay-rich, oxide breccias with clasts that display silicification, interpreted as epithermal vein-related alteration. Overall, in the portions of the deposit drilled to date, the silica content is low and the oxidation is deep exceeding depths greater than 200 metres.

Quality Control

Oro Mining maintains a strict quality control program. All samples generated by Oro Mining were submitted directly to Inspectorate, an ISO 9001-2008-certified assay laboratory, for preparation in Durango, Mexico, and analysis in Reno, NV. All sonic drill samples submitted for analysis were from splits of quarter-sawn frozen core. Analysis was conducted on one-assay-tonne samples for gold, with a standard, blank and duplicate inserted for every 20 samples submitted. Analysis of gold was by fire assay with AAS finish, and with gravimetric finish on samples exceeding five g/t gold. Y. (Gary) Wong, P.Eng. is a qualified person as defined by National Instrument 43-101 and has reviewed the content of this press release.

About Oro Mining

Oro Mining is a publicly-listed company on the TSX Venture Exchange with properties located in Sinaloa and Zacatecas, Mexico. Oro Mining's corporate mandate is to advance its projects toward production, while continuing to make exploration discoveries on its extensive property position. The district-scale Trinidad property that hosts the Taunus gold deposit continues to be the focus of Oro Mining's exploration and project development activities. The Company's mission is to create exceptional value for our shareholders through exploration discovery, resource growth, mine development and production, while providing sustainable benefits to our staff, the environment, and the communities where we operate.

ON BEHALF OF THE BOARD OF DIRECTORS

John Brownlie, Chief Executive Officer

To view the Maps associated with this release, please visit the following link: http://media3.marketwire.com/docs/ogr721_Maps.pdf.

Some statements in this release may contain forward-looking information. These statements include, but are not limited to, statements with respect to future drilling, exploration, development and production activities. These statements address future events and conditions and, as such, involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the statements.

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

Contact Information

  • Oro Mining Ltd.
    John Brownlie
    Chief Executive Officer
    604 646-1580
    604 642-2411 (FAX)
    www.oromining.com