Southern Rio Resources Ltd.

Southern Rio Resources Ltd.

September 20, 2005 18:58 ET

Southern Rio Resources Ltd.: Drilling Program Commences on Davidson Gold-Silver Project

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Sept. 20, 2005) - Southern Rio Resources Ltd. (the "Company") (TSX VENTURE:SNZ) is pleased to announce the commencement of a Phase 1 drill program on the Company's 100% owned Davidson Property (formerly known as the Blackwater-Davidson property). Acquired by Southern Rio in April 2005, the Davidson Property comprises 28 contiguous claims totaling approximately 500 hectares. The property is accessible by secondary logging roads and located approximately 110 kilometres southwest of Vanderhoof in central British Columbia. Previous work by several companies since the late 1970s includes 31 diamond drill holes and 34 rotary drill holes, which defined a large gold-silver mineralized system over an area of about 1,000 by 700 metres. Of particular interest is high-grade structurally controlled gold mineralization identified in several prior drill holes which may define a zone of higher grade shear-hosted veins. Significant prior high-grade drilling results include:

Hole DAV-11

Drill Depth (m) Intercept (m) Gold Silver
62.3 - 68.6 6.3 14.28 g/t 26.7 g/t
Including: 3.6 21.71 g/t 34.0 g/t
1.3 48.3 g/t 19.5 g/t

Hole DAV-9

Drill Depth (m) Intercept (m) Gold Silver
91.41- 92.93 1.52 16.33 g/t 3.5 g/t

No drilling has taken place on the property since 1992, when 5 core holes were completed totaling 758 meters, directed principally at IP chargeability targets. The current diamond drill program will total approximately 1,100 meters directed at multiple gold-silver targets.

The Davidson property is located approximately 20 kilometres north-northeast of the Company's flagship project, the 3Ts project, where an inferred resource of 129,400 ounces of gold and 2,159,000 ounces of silver has been calculated (NR 43-101 compliant). Both projects are in the Nechako Plateau, a region underlain by favorable felsic volcanics within an extensional structural setting that includes numerous low-sulphidation epithermal precious metal and porphyry-associated base metal occurrences. Due to this region's generally low relief and extensive glacial till, the Nechako Plateau remains significantly under explored.

The Davidson field program is under the supervision of Robert Weicker, PGeo, who is a qualified person as defined by NI 43-101. The primary assay laboratory used is Eco Tech Laboratory, in Kamloops, with check assays being performed by Acme Analytical Laboratories in Vancouver. Results from work on the Davidson property, will be reported as they become available.


John McDonald, Director

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