Riverstone Resources Inc.

Riverstone Resources Inc.

October 18, 2006 15:07 ET

Riverstone Resources Inc.: Drilling Program Begins to Probe New Gold Zone on Kao Permit

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Oct. 18, 2006) - Riverstone Resources Inc. (the "Company") (TSX VENTURE:RVS) is pleased to report that a follow up Rotary Air Blast ("RAB") drilling program will begin this week on the Kao Exploration Permit in Burkina Faso, West Africa. The follow up program will consist of 2,500 metres of RAB drilling to better define the southern portion of the gold zone discovered during the initial RAB drilling program conducted by the Company in August of 2006. Three new lines of drill holes are planned, with vertical holes drilled at 50 metres spacing along the lines, and to depths of between 30 and 60 metres. The drilling program is designed to better define the shape and depth of the gold zones, in preparation for a Reverse Circulation drilling program.

The results of the initial 4,556-metre RAB drilling program in August of 2006 were reported in a Company News Release issued October 11, 2006. This drilling program was designed to evaluate a 4 kilometre by 1 kilometre gold-in-soil geochemical anomaly. The results from the August drilling indicate that the geochemical anomaly is underlain by 3 to 5 sub-parallel gold zones oriented in a general northeast to north-northeast direction. The zones have been traced over a strike length of 2.70 kilometres, are up to 250 metres wide, and are open to the north and to depth. A number of the August drill holes ended in gold mineralization when the holes were stopped at 30 metres depth. All holes are vertical and intervals reported are drilled widths, which may not represent true widths of the mineralized zones.

Some of the better intersections from the August drill program include:

1.35 g/t gold over 30 m (including 2.28 g/t gold over 6 m) in KA-06-018

1.05 g/t gold over 30 m (including 1.55 g/t gold over 15 m) in KA-06-020

0.89 g/t gold over 30 m (including 1.37 g/t gold over 9 m) in KA-06-021

1.18 g/t gold over 30 m in KA-06-022

0.73 g/t gold over 30 m (including 1.33 g/t gold over 9 m) in KA-06-023

0.72 g/t gold over 30 m (including 2.67 g/t gold over 6 m) in KA-06-034

0.51 g/t gold over 30 m in KA-06-043

0.6 g/t gold over 30 m (including 1.45 g/t gold over 12 m) in KA-06-064

0.71 g/t gold over 30 m (including 1.54 g/t gold over 12 m) in KA-06-097

The Kao Exploration Permit is contiguous with the southern boundary of the Company's Rambo Exploration Permit. Previous RC drilling on the Rambo permit by the Company delineated a mineralized zone over a strike length of 350 metres and for 170 metres down dip, which remains open in all directions. Grades within the zone range from 1.16 g/t to 21.4 g/t over widths ranging from 3.0 metres to 18.5 metres. Orezone's Sega property is 25 kilometres southeast of the Kao permit and Golden Star's Goulagou property adjoins Kao on the northwest.

The Company maintains a rigorous quality control program involving the use of repeat assays, check assays at independent labs, and the use of verifiable blanks and standards from an accredited Canadian lab. All soil, rock and RAB samples were assayed using standard fire assay with atomic absorption techniques, at the independent Abilab Burkina SARL laboratories in Ouagadougou, Burkina Faso.

The Company is actively exploring a portfolio of 12 mineral exploration permits in Burkina Faso, with land holdings in some of the more prospective Birimian Greenstone Belts in Burkina Faso. For further information about the Company and its activities in Burkina Faso, please refer to the Company's website at www.riverstoneresources.com and on www.sedar.com.


Michael D. McInnis, P.Eng., CEO & President

Paul G. Anderson, P. Geo is a Qualified Person for RVS and has reviewed and approved the contents of this release.

Certain statements made and information contained in this news release and elsewhere constitutes "forward-looking information" within the meaning of the Ontario Securities Act. Forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ from those reflected in the forward-looking statements, including, without limitation, risks and uncertainties relating to the interpretation of drill results and the estimation of mineral resources, the geology, grade and continuity of mineral deposits, the possibility that future exploration, development results will not be consistent with the Company's expectations, accidents, equipment breakdowns, title matters and surface access, labour disputes, the potential for delays in exploration activities, the potential for unexpected costs and expenses, commodity price fluctuations, currency fluctuations, failure to obtain adequate financing on a timely basis and other risks and uncertainties, including those described under Risk Factors in each management discussion and analysis. In addition, forward-looking information is based on various assumptions including, without limitation, the expectations and beliefs of management, the assumed long term price of gold, that the Company will receive required permits and access to surface rights, that the Company can access financing, appropriate equipment and sufficient labour and that the political environment within Burkina Faso will continue to support the development of environmentally safe mining projects. Should one or more of these risks and uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements. Accordingly, readers are advised not to place undue reliance on forward-looking statements.

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

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