Southwestern Resources Corp.

Southwestern Resources Corp.

May 19, 2006 08:00 ET

Southwestern Resources and Anglo American Launch First Phase Drilling on the Antay Copper-Molybdenum Porphyry Project, Peru

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - May 19, 2006) - Southwestern Resources Corp. (TSX:SWG) is pleased to announce that Anglo American Exploration Peru S.A. ("Anglo"), operator of the Antay Joint Venture, has informed the Company the first phase drilling program on the Ccora Sur porphyry copper-molybdenum target has commenced.

The Antay Copper-Molybdenum Porphyry Project is located 150 kilometres southeast of Cuzco within the Tintaya Bambas copper-gold belt. The project area is comprised of 50,000 hectares of exploration concessions owned 100% by Southwestern. In June 2005, the Company signed a Letter of Agreement with Anglo to further advance the Antay project. Under the terms of the Letter of Agreement, Anglo can earn a 70% interest in the Antay project by completing a bankable feasibility study and subscribing for US$5 million in Southwestern shares (of which US$500,000 has already been subscribed).

Exploration work by Anglo has focused on the southern portion of the Antay project over the mineralized Ccora Sur porphyry system. A mapping and extensive sampling program identified anomalous copper-molybdenum mineralization in highly leached stockworked porphyry and overlying quartzite. Anglo completed a dipole-dipole induced polarization geophysical survey across the Ccora Sur porphyry system. The survey defined a sizeable chargeability anomaly over an area of 2,500 metres by 1,200 metres and extending over 500 metres in depth. The first phase drilling program will comprise approximately 1,500 metres to test the chargeability anomaly at depth.

John Paterson, President of Southwestern, stated: "We are very excited that the initial drilling phase has commenced on the Ccora Sur porphyry zone. Ccora Sur represents a large copper-molybdenum system and we are pleased to see our partner Anglo conduct a systematic evaluation of this discovery."

In the northern portion of the Antay Joint Venture property, a second porphyry copper-molybdenum system (Sayta) was identified and extensively sampled. Unlike the Ccora Sur area, a 400-metre vertical section of the Sayta porphyry is exposed. Previous rock chip sampling in this area gave assays above one percent copper (see news release dated July 5, 2004). It is anticipated that Anglo will be evaluating this area in the latter part of 2006.

The Antay project represents one of several new porphyry copper discoveries in the prolific Tintaya-Bambas belt. Exploration by several groups in this belt is intense, including Xstrata's large program at the Bambas project.

Southwestern Resources Corp. is exploring in several countries for precious and base metals. The Company has a number of significant projects under way, including the Boka Gold Project in China with Team 209, where a major drilling program is being conducted as part of a prefeasibility study, the Liam Gold-Silver Project in Peru with Newmont Peru Limited, and the 100% owned Accha/Yanque Zinc Project in Peru. The Company is also exploring for porphyry copper-gold in a large area of southwestern Yunnan Province, China under a joint venture with Newmont Overseas Exploration Limited.

Forward-Looking Statement

Statements in this release that are forward-looking statements are subject to various risks and uncertainties concerning the specific factors disclosed under the heading "Risk Factors" and elsewhere in the Company's periodic filings with Canadian securities regulators. Such information contained herein represents management's best judgment as of the date hereof based on information currently available. The Company does not assume the obligation to update any forward-looking statement.

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