Supporting Technical Assessments

REPORT OceanaGold Waihi North Project Geotechnical Assessment Underground Mine and Tunnels This document has been produced for New Zealand consenting purposes only. Information contained herein must not be relied on for investment purposes. Submitted to: OceanaGold (New Zealand) Limited 22 Maclaggan Street, Dunedin 9016, New Zealand Submitted by: WSP New Zealand Limited 12 Moorhouse Avenue, Addington, Christchurch 8011, New Zealand +64 3 363 5400 G-14642.71-006-R-Rev0_FINAL June 2022 WAI-985-000-REP-LC-0016_Rev0 TECHNICAL REPORT WAIHI NORTH PROJECT – PRELIMINARY GEOTECHNICAL ASSESSMENT UNDERGROUND MINE AND TUNNELS GENERAL AREA 000

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