Stock Exchange Release Talvivaara Mining Company Plc 23 March 2011 Talvivaara Board Member Update Pursuant to Listing Rule 9.6.14(2), Talvivaara Mining Company Plc ("Talvivaara") notes that as of 22 March 2011, Gordon Edward Haslam, Chairman of the Board has been appointed as the Senior Independent Non-Executive Director of Centamin Egypt Limited, the mineral exploration, development and mining company dual listed on the Main Market of the London Stock Exchange and the Toronto Stock Exchange. Mr. Haslam's role with Talvivaara is unaffected by this appointment, and he will maintain his position as the Senior Independent Non-Executive Director of Namakwa Diamonds and non-executive director of Aquarius Platinum Limited. ENQUIRIES Talvivaara Mining Company Plc Tel: +358 20 7129 800 Pekka Erkinheimo, Chief Commercial Officer Talvivaara Mining Company Plc Talvivaara Mining Company is an internationally significant base metals producer with its primary focus on nickel and zinc using a technology known as bioheapleaching to extract metals out of ore. Bioheapleaching makes extraction of metals from low grade ore economically viable. The Talvivaara deposits comprise one of the largest known sulphide nickel resources in Europe. The ore body is estimated to support anticipated production for several decades. Talvivaara has secured a 10-year off-take agreement for 100 per cent of its main output of nickel and cobalt to Norilsk Nickel and entered into a long-term zinc streaming agreement with Nyrstar NV. Talvivaara is listed on the London Stock Exchange Main Market and NASDAQ OMX Helsinki and is included in the FTSE 250 Index. Further information can be found atwww.talvivaara.com. [HUG#1499499]