Supporting Technical Assessments

File: WAI-983-080-REP-GT-0013_Rev0.docx This report shall only be read in its entirety. OGNZL Reference No.: WAI-983-080-REP-GT-0013_Rev0 Prepared for: Oceana Gold (New Zealand) Ltd PO Box 190 WAIHI 3641 OCEANA GOLD (NEW ZEALAND) LIMITED WAIHI OPERATION, NEW ZEALAND STORAGE 3 - TAILING STORAGE FACILITY - RL155 DAM BREACH AND POTENTIAL IMPACT CLASSIFICATION ASSESSMENT Ref: 9216 22 June 2022 This document has been produced for New Zealand consenting purposes only. Information contained herein must not be relied on for investment purposes.

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