Financial reports recalculated in accordance with new segments and IFRS

The Board of Directors and management of Boliden have decided that as of year 2005 the primary segments will be defined based on the company’s main products, Copper and Zinc. The reason for changing the primary segments from Mines, Smelters Copper and Smelters Zinc is to obtain compliance between the strategic control and the financial reporting within the company. Further, the structural deal with Outokumpu created an integrated mining and smelting company based on copper and zinc. Most of Boliden’s international competitors report in segments based on products and comparability of companies will increase. As of January 1, 2005 the Boliden Group will apply International Financial Reporting Standards (IFRS). Comments and recalculated figures for 2004 in accordance with IFRS and the new primary segments can be found in Appendix 1. For more information, please contact: Jan Johansson, President and CEO, telephone +46 8 610 1602, + 46 70 555 02 02 Staffan Bennerdt, CFO Boliden AB, telephone: +46 8 610 1520, +46 70 513 61 14 Ulf Söderström, Senior VP Group Communications, telephone +46 8 610 15 57, +46 70 618 95 95