Reviewing its strategic options regarding Sierra Gorda

Sumitomo Corporation ("SC", Head office: Chiyoda-ku, Tokyo; Representative Director, President and Chief Executive Officer: Masayuki Hyodo) and Sumitomo Metal Mining Co., Ltd. ("SMM", Head office: Minato-ku, Tokyo; President: Akira Nozaki) announced that SMM and SC are reviewing their strategic options regarding Sierra Gorda, including a potential sale of their ownership interests. Sierra Gorda is jointly owned by SMM, SC and KGHM Polska Miedź S.A.  SMM and SC have retained the following advisors and are proceeding with an initial study in accordance with their professional advice.

RBC Capital Markets
Financial Advisor
Farid Dadashev
+44 20 7029 7815
farid.dadashev@rbccm.com

Sullivan & Cromwell LLP
Legal Advisor
Sergio J. Galvis
+1 212 558 4740
galviss@sullcrom.com