Power of Attorney for Vale S.A. Officer

This filing pertains to a Power of Attorney granted by Wagner Vasconcelos Xavier, a director at Vale S.A., to Luciana Oliveti Chiminazzo and Thiago Kiill Lofiego. The attorneys-in-fact are authorized to execute and submit SEC filings, including Forms 3, 4, and 5, on behalf of Mr. Xavier. They are also empowered to obtain information regarding transactions in the Company's equity securities from third parties. The Power of Attorney clarifies that the attorneys-in-fact may act at their discretion without independent verification and that Mr. Xavier remains ultimately responsible for compliance with Section 16 of the Exchange Act. This document revokes previous powers of attorney and appoints the attorneys-in-fact as administrators for the undersigned's EDGAR account. The Power of Attorney is effective until Mr. Xavier is no longer required to file these forms, unless earlier revoked.