Oro Silver Resources Ltd.
TSX VENTURE : OSR

Oro Silver Resources Ltd.

June 16, 2009 09:00 ET

Oro Silver to Assess Thiosulfate Processing Option at El Compas Property, Zacatecas, Mexico

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 16, 2009) - Oro Silver Resources Ltd. ("Oro Silver" or the "Company") (TSX VENTURE:OSR) reports that it will continue to assess processing options on its 51-per-cent-owned El Compas property in Zacatecas, Mexico.

This assessment will focus on thiosulfate processing as an alternative means to recover gold/silver- based ore common to the El Compas district.

Tom Bagan, Vice President and COO of Oro Silver stated, "This is an important step to follow the positive process work we reported in 2008. Having thiosulfate as another high recovery alternative to the El Compas ore will provide us further flexibility in our operational planning."

The El Compas property has previously reported gold and silver recoveries of over 95% and 70% respectively with cyanide leach testing. This work was carried out by SGS Laboratories, who will also perform the thiosulfate testwork.

Oro Silver has completed a National Instrument 43-101 technical report covering the mineral resource estimation on El Compas (reported in Oro Silver's press release dated September 18, 2008). The Indicated portion of the mineral resource was estimated at 310,000 tonnes grading 5.82 g/t gold and 59.09 g/t silver for 58,000 gold ounces and 588,900 silver ounces. The Inferred portion of the mineral resource was estimated at 234,000 tonnes grading 4.94 g/t gold and 45.69 g/t Ag for 37,200 gold ounces and 343,700 silver ounces. Both categories were calculated using a 3 g/t gold-equivalent cut-off.

About Oro Silver

Oro Silver is a silver exploration company pursuing early and advanced stage silver-based opportunities in Mexico. Oro Silver's strategy is to develop properties towards silver production through a strategic business arrangement and development plan focused on advanced-stage projects with known silver resources that exhibit potential for expansion. The El Compas mine continues to be the cornerstone for Oro Silver's growth strategy in the Zacatecas silver district.

ON BEHALF OF THE BOARD OF DIRECTORS,

Darren Bahrey, President & CEO

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.

Contact Information

  • Oro Silver Resources Ltd.
    Darren Bahrey
    President & CEO
    604 646-1585
    604 642-2411 (FAX)
    www.orosilver.com