VANCOUVER, BRITISH COLUMBIA--(Marketwire - July 7, 2008) - Oro Silver Resources Ltd. ("Oro Silver") (TSX VENTURE:OSR) has commenced a 5,000-metre surface diamond drilling program at the company's flagship Vetagrande property, located 7 kilometres north of the city of Zacatecas, Zacatecas State, Mexico. The drilling program will test targets identified by surface & underground sampling and geological mapping completed by Oro Silver in 2008.

Oro Silver's drill program has three main objectives:

1. Test the depth and lateral extensions of the main "Vetagrande" vein structure over a 1 kilometre strike extent and to a vertical depth of +300 metres;

2. Test the depth extensions of the sub-parallel "Armados, San Jose, San Tiburcio, Predilecta, Esperanza, and La Flor" vein structures;

3. Test near surface extensions of the "La Flor & Vetagrande" vein mineralization currently being mined via a production ramp.

"We are enthusiastic about the proposed drilling at Vetagrande; our re-interpretation of historic data and field work completed in 2008 has identified excellent targets located along strike and at depth of the main Vetagrande vein structure, while other sub-parallel vein structures also hold potential for new discoveries. This area can be described as a top-quality silver-base metal district known for its multi-million ounce potential and has received very limited modern exploration," stated Herve Thiboutot, Chief Executive Officer & Vice-President Exploration of Oro Silver.

The appended map shows the locations of the Vetagrande vein system, other historic major vein systems, and Capstone Mining Corp's Cozamin mine located on a major sub-parallel vein system south of Vetagrande, as part of the Mala Noche trend.

To view the appended map please click on the following link: http://media3.marketwire.com/docs/os...

The drilling program is being supervised by Mr. Herve Thiboutot, Chief Executive Officer & Vice-President Exploration, and Mr. Jorge Ortega, MSc & P.Geo. and Vetagrande Project Manager for Oro Silver, both are qualified persons as defined by National Instrument 43-101. Mr. Thiboutot and Mr. Ortega have reviewed the content of this press release.

ON BEHALF OF THE BOARD OF DIRECTORS,

Herve Thiboutot, Chief Executive Officer

Some statements in this release may contain forward-looking information. These statements include, but are not limited to, statements with respect to future exploration, resource estimation, development and production activities and future expenditures. 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. Such factors include, among others, the time and success of future exploration, development and production activities and the timing and amount of expenditures.

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