Waihi Emergency Principal Control Plan OceanaGold Waihi WAI-250-PLN-001 Page 97 of 124 1.7 Tailings Impoundment Failure Level 1 Response Level 2 Response Level 3 Response Triggers A slump of < 1 metre A slump of 1-3 metres with >24-48 hour. A sudden failure or a slump of over 1 metre with no warning. All Personnel • Notify supervisor. • Assess the situation from safe location • Identify location • Time recorded. • Notify supervisor. • Assess the situation from safe location • Identify personnel in danger etc. • Notify other persons in the area. • Quickly assess the situation and make emergency call • Determine safest route of travel to Place of Safety • Notify other persons in the area. Emergency Call Taker • No action required • Follow procedures as per appropriate duty card • Follow procedures as per appropriate duty card Supervisor • Suspend operations in vicinity of movement. • Notify Department Superintendent or Department Manager • Increase monitoring frequencies. • Suspend operations in vicinity of movement. • Consider evacuation from surrounding areas • Notify Department Superintendent or Department Manager • Prepare emergency response team and equipment for immediate response. • Initiate evacuation if required and not already done • Dispatch emergency response team and equipment for immediate response if personnel missing. • Notify Department Superintendent or Department Manager • Be the Mine Incident Controller until Department Superintendent or Department Manager takes over • Complete a head count of all personnel. Department Manager ((Mine Incident Controller)) • Notify technical personnel. • Initiate appropriate mitigation measures. • Monitor & record situation • Notify technical personnel. • Refer to Tailings storage facility emergency action plan for detailed • Initiate appropriate mitigation measures. • Increase monitoring frequencies. • Notify General Manager (SSE) • Set up incident control point (ICP) • Activate incident management team (IMT) • Notify WorkSafe when appropriate • Activate and coordinate Emergency Response Team. • Initiate appropriate mitigation measures. • Notify General Manager (SSE) • Set up incident control point (ICP) • Activate incident management team (IMT) • Notify WorkSafe when appropriate General Manager (SSE) • No action required • Monitor situation and maintain contact with reporting person. • Notify Chief Operating Officer if required • Ensure MIC and IMT are being activated • Notify chief operating officer if required • Notify WorkSafe when appropriate • Monitor situation and maintain contact with reporting person. • Notify Chief Operating Officer if required • Ensure MIC and IMT are being activated • Notify chief operating officer if required • Notify WorkSafe when appropriate Chief Operating Officer • No action required • No action required • Implement Crisis Management Plan if required
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