Assurance report Independent Assurance Report To the Management of Outokumpu Oyj We have been engaged by the Management of Outokumpu Oyj to perform a limited assurance engagement on the information on economic, social and environmental responsibility disclosed in Outokumpu Oyj’s Sustainability Reporting 2011 for the period of January 1, 2011 to December 31, 2011 (hereinafter “Sustainability Reporting”).