Metso Corporation's Company release on August 21, 2009 at 3:50 p.m. Moody's Investor's Service has placed Metso's Baa2 long-term issuer rating under review for possible downgrade. Metso is a global supplier of sustainable technology and services for mining, construction, power generation, automation, recycling and the pulp and paper industries. We have about 28,000 employees in more than 50 countries. www.metso.com For further information, please contact: Pekka Hölttä, Senior Vice President, Corporate Treasurer, Metso, tel. +358 20 484 3195 Johanna Henttonen, Vice President, Investor Relations, Metso, tel. +358 20 484 3253