SEYMOUR EXPLORATION CORP.
8th floor, 700 West Georgia St.
Vancouver, British Columbia  V7Y 1H4
(the "Company")

NEWS RELEASE

August 18, 2005

Seymour Exploration Provides Update on Lynn Lake Nickel Mine Property

Sudbury, Ontario – August 18, 2005 – Seymour Exploration Corp. (TSX-V: SEZ) announced today that Wallbridge Mining Company Limited (“Wallbridge”) has elected not to exercise its option to acquire a 50% interest in the Lynn Lake project and participate in the project as an equal partner. Wallbridge now retains an option to participate as a 25% minority, non-operating partner by providing 25% of project funding. Wallbridge will have 30 days to elect to participate at the 25% level, following delivery by Seymour of technical reports including the new mineral resource for the property. Otherwise, Wallbridge’s option will convert to a payment of 500,000 Seymour common shares and a share purchase warrant for 500,000 shares, subject to regulatory approval.

As project operator, Seymour plans to focus its activities exclusively on the Lynn Lake nickel mine. In order to develop the project to its full potential, Richard Murphy President and CEO will now commit 100% of his time to Seymour. Furthermore, the company has hired Danniel Oosterman as a full time senior geologist for the Lynn Lake project. Seymour has also relocated its head office in Sudbury; it is now located adjacent to Wardrop Engineering and will continue to draw upon the expertise available through Wardrop.

The Lynn Lake mine closed in 1976 with a substantial nickel resource in-situ. Given the near perfect preservation of the mine data, it is possible to accurately determine the size of this resource and to develop an exploration plan to increase the resource, by exploiting technologies that were unavailable to the original mine operator, such as borehole electromagnetic surveys and computer-based 3D modeling. Given the strong market demand for new nickel mines, the Company’s objective is to establish the existing mineral resource in the mine and add new resources through exploration so that the economics of reopening the mine can be determined.

The Company retained Wardrop Engineering this past March to put the mine information into a Datamine database and to establish the resource that had been previously defined by the mine’s past operator. As of August 11, all applicable historical data for the mine had been incorporated into Datamine geological software. Geological interpretation and resource estimation are now well advanced. Seymour anticipates completion of this work and announcement of the resource estimate by the second half of September.

Company geologists accompanied a Wardrop geologist to the Lynn Lake nickel mine property earlier this month. The purpose of the visit was to confirm the mine data by comparing the historical records to the actual drill core still on the property. Commenting on the quality of the data, Rob Carter P.Eng. of Wardrop Engineering stated “We are very impressed with the quality and completeness of the mine data. The fact that the drill core from the mine is still available for examination boosts our confidence as we prepare the mineral resource.”

The Company has recently closed a private placement of $300,000 (see press release dated August 12, 2005). With this placement Seymour is fully funded to complete the resource calculation and develop a comprehensive exploration plan for the mine property.

Richard Murphy, P.Geo., President and CEO of Seymour Exploration Corp. is the Qualified Person responsible for the technical content of this press release.

FOR FURTHER INFORMATION PLEASE CONTACT:

Seymour Exploration Corp.
Richard Murphy, President and CEO
Tel: (705) 698-1962

Email: rmurphy@seymourexploration.com

957 Cambrian Heights Drive
Suite 102
Sudbury Ontario
P3C 5M6

This document may contain forward-looking statements relating to Seymour Exploration Corporation’s operations or to the environment in which it operates. Such statements are based on operations, estimates, forecasts and projections. They are not guarantees of future performance and involve risks and uncertainties that are difficult to predict and may be beyond Seymour’s control. A number of important factors could cause actual outcomes and results to differ materially from those expressed in forward-looking statements, including those set forth in other public filings. In addition, such statements relate to the date on which they are made. Consequently, undue reliance should not be placed on such forward-looking statements. Seymour disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, save and except as may be required by applicable securities laws.

THE TSX VENTURE EXCHANGE HAS NOT REVIEWED AND DOES NOT ACCEPT RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE CONTENT OF THIS NEWS RELEASE.