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 83 of 124 SOLID CYANIDE SPILLAGE IN TRANSIT PURPOSE To provide guidelines for responding to a solid cyanide spill in transit HAZARDS • Cyanide usually fatal if ingested, absorbed through the skin, dust enters eyes, or HCN gas inhaled • Fire if truck damaged • Environmental damage RISK ASSESSMENT High SITE EMERGENCY COORDINATOR • New Zealand Emergency Services (fire brigade/police) • Contact Orica for specialist advice • Mobilise Rapid Response Team RESPONSE TO HAZARDS • Do not risk life • Mobilise emergency response team if required • Monitor area for HCN gas • Wear full face mask with appropriate filter or BG4 • Wear full wet weather protective suit (rubber boots to be worn inside wet weather trousers and PVC gloves to be worn inside of wet weather jacket) • Keep area clear of bystanders EVACUATION All non-emergency personnel to be kept clear of the area CONTAINMENT • Remain upwind of cyanide or spills and monitor for HCN gas • Avoid contact with water • Shovel up all of the spilled solid and place in plastic bags or sealed drums • Sweep up remaining particles carefully • Neutralise spill area with ferrous sulphate SPECIAL EQUIPMENT • Breathing apparatus and full face respirator and appropriate filter • Ambulance with additional oxygen equipment on standby EMERGENCY ACTION POINTS • Ensure Site Emergency Co-ordinator is given requested support • Keep an emergency logsheet • Man incident command post at all times • Ensure mine management is advised of the emergency at first opportunity and kept up to date EMERGENCY CONTACTS See general listing in appendix 5 for contact telephone numbers EXTERNAL RESOURCES • NZ Police Force 111 • NZ Fire Brigade 111 • Orica 0800 734 607 • Walters Transport 09 258 5090 • National Poison Centre 0800 764 766
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