FOR IMMEDIATE RELEASE:

July 31, 2008

AUSTRALIAN SUBSIDIARY REPORTS COMPLETION OF WOODLAWN RETREATMENT PROJECT FEASIBILITY STUDY

Tri Origin Exploration Ltd. (TOE:TSX-V) (the ?Company? or ?TOE?) is pleased to announce that its Australian subsidiary, Tri Origin Minerals Ltd. (?TRO?), has today published its quarterly report for the period ended June 30, 2008 which highlights the completion of the feasibility study related to TRO?s Woodlawn Retreatment Project (?WRP?).

As indicated by TRO, the WRP feasibility study was completed with project economics that exceed internal investment criteria. TRO stated in the report that it ?will proceed to enter into an alliance with a suitable concentrate off-taker?and progress the discussions that it has been conducting during the quarter with prospective project financiers.?

Bob Valliant, President and CEO of the Company stated ?We are very pleased to have received the report from our Australian subsidiary. We look forward to TRO?s continuing efforts to finalize off-take arrangements and project financing for WRP in order to realize value for all of its shareholders, including TOE, from the Woodlawn projects.?

The Company will post TRO?s quarterly report on its website at www.triorigin.com. Alternatively, interested parties may view TRO?s quarterly report on the Australian Securities Exchange website at www.asx.com.au (use TRO as the search criteria once on this website).

For further information please contact:

Tri Origin Exploration Ltd.

Dr. Robert Valliant, President

or

Rudy Duschek C.A., CFA

EVP Corporate Development and CFO

Tel: (905) 294-9942

E-mail: invest@triorigin.com

Tri Origin Exploration Ltd. is publicly listed on the TSX Venture Exchange under the trading symbol TOE. Tri Origin has leveraged exposure to mineral discoveries in Australia through its 48% equity interest in its subsidiary, Tri Origin Minerals Ltd.; a publicly traded company listed on the Australian Securities Exchange under the symbol TRO.