Waihi Underground Explosive Principal Hazard Management Plan Approved by: SSE/ General Manager Approval Date:11/05/2021 Next Review: 08/04/2022 OceanaGold Waihi Document ID: WAI-400-PLN-007 Page 2 of 27 Document Issuance and Revision History Document Name: Waihi Underground Explosives Principal Hazard Management Plan Document Reference: WAI-400-PLN-007 Revision No. Revision Date Section Page Description of Issuance or Revision Effective Date 1.0 Review and Update to OGNZL 3/04/2016 2.0 June 2017 All General review and update 08/08/2017 3.0 April 2019 All Numerous updates. 12/04/2019 4.0 April 2020 All Add in reference to Procurement Guidelines, full document review 8/04/2020 5.0 11/05/2021 All Approved by new SSE/GM 11/05/2021
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