Supporting Technical Assessments

Waihi Emergency Principal Control Plan Approved by: General Manager/SSE Approval Date: 26/03/2021 Next Review:26/03/2022 OceanaGold Waihi WAI-250-PLN-001 Page 40 of 124 NOTE: For a medical event at WKP the 111 operator will need to understand the “remoteness” of this site. This will then elevate the requirement for helicopter extraction for a lower level injury/illness. Other lower level response options to a medical event at WKP include; Skyworks pick up from helipad, or mines rescue team member deployment to scene via Skyworks long line (Human External Cargo - HEC) If the emergency is time critical, activate PLB and a rescue aircraft will be dispatched to that exact location. If the emergency does not have St. Johns involvement, then the above helipad coordinates will need to communicated to the pilot. Any updates to OGL helipads or coordinates are to be communicated to St. Johns airdesk. 0800-247-3375 Emergency Co-ordination Center (ECC) The ECC will be set up once the Mine Incident Controller has declared a level 3 incident. Its main purpose is to assist the communication process between the mine and external agencies. The following is how the ECC is determined and set up: • determined by local police (Waihi Gold Moresby Ave Offices or Waihi Police Station) • above includes consultation process between mine site and police • pre-determined location recorded in EMCP • copy of current site plans and EMCP • communication between ECC and ICP assured • activation process is agreed and recorded in EMCP • Ensure critical activation and implementation advice is logged into Police call center database. (site access point, site security, reporting areas on site, ECC location and resourcing) • Lead by Local Controller (LC), normally a Senior Police Officer. • The Underground Mines Emergency Protocol comes into effect when: − any stakeholder declares a level 3 event − MIC, CIE and police are notified − CIE appoints a Registered MIC − LC is established • LC contacts MIC informing that ECC is operational. Involving External Parties in Emergency Exercises It is essential to work in with external parties when conducting exercises or response training onsite. This will build relationships and check for knowledge and understanding of Oceanagold emergency processes.

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