PRODUCTION STOP AT VALLVIKS BRUK

As part of the investment programme of SEK 77 million approved by the board of Rottneros in December 2009, parts of the evaporation plant will be exchanged during the annual maintenance stop in the autumn of 2010.

For further information please contact:

Ole Terland, Chief Executive Officer and President, +46 8 590 010 00

Rottneros discloses the information provided herein pursuant to the Securities Markets Act and/or the Financial Instruments Trading Act. The Information was submitted for publication on Wednesday 26 May 2010 at 10.45 CET.