Rochester Resources Ltd.
TSX VENTURE : RCT
OTC Bulletin Board : RCTFF
FRANKFURT : R5I

Rochester Resources Ltd.

October 20, 2008 09:01 ET

Rochester Provides Updated NI 43-101 Technical Report on Mina Real Property, Nayarit, Mexico

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Oct. 20, 2008) - Rochester Resources Ltd. (TSX VENTURE:RCT)(OTCBB:RCTFF)(FRANKFURT:R5I) is pleased to announce that an updated technical report has been prepared on the Mina Real Property in Nayarit, Mexico dated Sept. 30, 2008 by Victor A. Jaramillo, M.Sc. (A), and P.Geo. of Discover Geological Consultants Inc. Mr. Jaramillo on his most recent visit to the Mina Real Project was able to review geological work completed to date, such as drill data, examine drill core, underground geological information, geochemical data and maps of the property.

To view the entire 43-101 Technical Report please click here: http://media3.marketwire.com/docs/rct1020a.pdf

Or please visit our website at www.rochesterresources.com.

Significant highlights from the report include:

A geological potential has been estimated for the Florida-4 vein system taking into consideration parameters that are discussed in the report. This potential is provided in ranges as required by NI 43-101 reporting standards.

For the lower end range equals 225m depth x 2,000m length x 0.50m wide x 2.5 s.g. equals 562,500 tonnes with grades of 4.0 g/t gold and 60 g/t silver

For the upper end range equals 450m depth x 2,000m length x 1.0m wide x 2.5 s.g. equals 2,250,000 tonnes with grades of 8 g/t gold and 100 g/t silver

The range provided includes the following assumptions:

1. A very well mineralized mining horizon that ranges from 1350m to 900m elevation;

2. A vein width ranging between 0.5m and 1.5m (we will use 1.0m for upper range);

3. A 2.0 kilometre strike length as defined from surface outcrop;

4. A specific gravity of 2.5

The above geological potential is for one vein only. The Mina Real Property comprises approximately 20 veins that have been identified to date (to view Figure 1 please click on: http://media3.marketwire.com/docs/rct1020b.jpg). The writer believes the geological potential to be considerable.

Cautionary statement: Investors are cautioned that the potential quantity indicated above is conceptual in nature. At this time, there has been insufficient exploration to define a mineral resource below the current inferred resources, and it is uncertain if further exploration will result in the discovery of these mineral resources.

Previous news that was released dated July 24, 2008 reported grades from surface trenching at Florida 4. The results indicate similar surface results to what was encountered on surface and above the zone of favourable mineralization at Florida 3. Some of the results previously reported from this trenching program include:



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Trenching Results
Trench # Width Au (g/t) Ag (g/t)
No. 1 1.40m 2.49 62
No. 5 5.80m 4.82 131
No. 6 0.80m 2.15 68
No. 7 0.70m 5.97 44
No. 10 2.60m 6.53 80
No. 11 1.40m 3.26 68
No. 12 0.70m 1.13 50
No. 13 1.80m 3.63 64
No. 14 1.40m 0.82 475
No. 15 1.10m 1.93 59
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The author noted that at the Mina Real Project, the presence of high grade gold-silver quartz-adularia veins and stockwork veinlets in the country rocks bears many geological similarities to Sleeper, Nevada; McLaughlin, California; Hishikari, Japan and Golden Cross and Martha Hill, New Zealand, all of which were or are significant gold producers.

The author who is a QP as defined by NI 43-101, has read and approved the contents of this news release.

ON BEHALF OF THE BOARD

Dr. Alfredo Parra, President and CEO

About Rochester Resources Ltd.:

Rochester s a junior gold/silver producer engaged in the production and the continued exploration and development of its Mina Real and Santa Fe Properties located in the State of Nayarit, Mexico. Nayarit is located in the Sierra Madre Occidental range, the most productive epithermal precious metal region in the world, which hosts the majority of Mexico's gold and silver deposits. The Company substantially completed the construction of a cyanidation processing plant at the end of December 2006. Initial milling operations commenced in January 2007 with the commissioning process being completed by May 31, 2007. The Company has, in a very compressed time frame, acquired, developed and brought into production a gold property in Mexico. The Company now has an operating mill which is generating cash flow from operations. The Company is also implementing an exploration and development program utilizing funds raised in the capital markets and cash flow from operations to define resources to support future mining and production.

Forward Looking Statements

This Company Press Release contains certain "forward-looking" statements and information relating to the Company that are based on the beliefs of the Company's management as well as assumptions made by and information currently available to the Company's management. Such statements reflect the current risks, uncertainties and assumptions related to certain factors including, without limitations, competitive factors, general economic conditions, customer relations, relationships with vendors and strategic partners, the interest rate environment, governmental regulation and supervision, seasonality, technological change, changes in industry practices, and one-time events. In addition, the Company has not conducted an independent feasibility study on the Mina Real project which may increase the risk that the planned operations are not economically viable. Should any one or more of these risks or uncertainties materialize, or should any underlying assumptions prove incorrect, actual results may vary materially from those described herein.

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

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