Southern Rio Resources Ltd.
TSX VENTURE : SNZ

Southern Rio Resources Ltd.

August 09, 2005 18:27 ET

Southern Rio Resources Ltd.: Field Work Starts on B.C. Cu-Mo Properties

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Aug. 9, 2005) - Southern Rio Resources Ltd. (the "Company") (TSX VENTURE:SNZ) announces that field programs have commenced on the Company's Ebb and Rey Lake copper-molybdenum properties located in the "copper belt" of southern British Columbia. In both cases, the work programs will consist of line-cutting, induced polarization geophysical surveying, geological mapping, and soil and rock geochemical sampling.

The 100%-owned Ebb property is located southeast of Boston Bar, and is accessible by secondary logging roads from the Trans Canada Highway. The property covers portion of a major fault system, the Pasayten Fault, which separates intrusive granitic rocks from sedimentary rocks. Work during the early seventies identified a copper and molybdenum-bearing breccia pipe intruded at or adjacent to the contact between granite and sediments. This contact zone, which is considered conducive to higher grade copper and/or molybdenum mineralisation, will be the focus of Southern Rio's exploration, using modern geophysical and geochemical methods unavailable in the seventies.

The Rey Lake property is located north of Merritt, approximately 25 kilometres from the Highland Valley copper mine, one of the largest copper producers in North America. The property is road accessible from secondary ranch and logging trails. Work in the seventies, mainly by ASARCO, identified widespread low grade copper-molybdenum mineralisation in a contact skarn environment, within which were some areas where significantly higher grades (greater than 0.5% copper equivalent) occurred. These appear to be associated with breccia zones at or adjacent to a north-trending intrusive igneous contact. Southern Rio's program will focus on this environment and attempt to better define and extend the breccia zones using modern geophysics and geochemistry. Southern Rio may earn an initial 51% interest in the Rey Lake property from Bearclaw Capital Corp. ("Bearclaw") by making exploration expenditures totaling $500,000, issuing a total of 500,000 shares and paying $5,000 cash to Bearclaw by September 15, 2008.

The technical content of this news release has been reviewed by Lindsay Bottomer P.Geo., who is a qualified person as defined in NI 43-101.

The Company also wishes to announce the it has granted incentive stock options to directors, officers and employees to purchase up to 1,150,000 common shares. The options will be granted for a period of five (5) years commencing August 2, 2005, exercisable at a price of $0.15 per share.

SOUTHERN RIO RESOURCES LTD

Lindsay Bottomer, President

The TSX-V has not reviewed and does not accept responsibility for the adequacy or accuracy of the content of this news release.

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