Website: N/A
Stock Symbol: AMEX: PMU
Market Value: N/A (in millions)

The Company was formed by the amalgamation (the Amalgamation) of Dayton Mining Corporation (Dayton) and Pacific Rim Mining Corp. (PacRim) (together the Predecessor Companies) on April 11, 2002. The Amalgamation received shareholder approval of both Dayton and PacRim on April 3, 2002 and approval of the Supreme Court of British Columbia on April 10, 2002.

On March 29, 2004, the British Columbia legislature enacted the Business Corporations Act (the New Act) and repealed the former act, which previously governed the Company. The New Act removed many of the restrictions contained in the former act, including restrictions on the residency of directors, the place of annual general meetings and limits on authorized share capital. The New Act also uses new forms and terminology.