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 25 of 124 found for both the Underground and Surface operations on the company SharePoint web page and/or at the respective departmental offices,. What to Do When You Arrive At an Evacuation Point Trained Wardens or the most senior representative from Waihi Operations, at each muster/evacuation point will assume the role of ‘Chief Warden. It will be the responsibility of each Muster Warden to take a head count and communicate via the RT with the other Muster Wardens and the Chief Warden. On arrival at a muster/evacuation point all personnel are to remain at the muster/evacuation point until advised otherwise by the Chief Warden via the Muster Warden. NOTE: “All personnel” includes all employees, visitors and contractors that were present on site at the time the evacuation was called. All the above referenced evacuation procedures are for operational areas only. In the event you are working at the Moresby Ave office or the Education Centre, then refer to the building specific plan. The muster/evacuation point controllers must be able to account for all visitors and contractors who have signed in at reception offices as well as the initial Cardax entry through the Security gates. Underground Evacuations There are two evacuation scenarios for underground: • Evacuation to refuge chambers • Evacuation to surface Depending on the reason for the evacuation, it may be signaled either by radio, stench gas or a combination of both. Upon hearing an radio evacuation radio call or smelling stench gas, all personnel will make their way immediately to the surface if possible. If for any reason they are unable to get to the surface or have been told to go directly to a chamber, then they shall access the nearest suitable refuge chamber. Upon reaching the surface, immediately report to the tag board and remove your tag. Follow any instructions from the Tag Board Controller. If in a refuge chamber, the most senior person should write down the names of all persons present and pass them to the Tag Board Controller when asked. 10.6.1 Refuge Chambers The underground mine has multiple refuge chambers strategically placed throughout to ensure a point of refuge is available to personnel should an emergency situation arise. They vary in size from being able to accommodate 6 personnel to 20 personnel. The placement of these depends on the number of personnel that may be in that work area. Mobile refuge chambers are also used to prevent entrapment of personnel in work areas or when needed as per mining requirements. All refuge chambers are connected to mine air and have either radio communications or telephone communication capabilities or both. Locations of refuge chambers are printed on the shift plan and on maps. Hard copies of the Mine map are located in the Mines Rescue station and digitally on the local network. The Underground Smart Centre also has an up to date mine plan at all times. 10.6.2 Escapeways When a safe path of egress is blocked an escapeway can be used to exit the mine, these are spaced strategically on levels to ensure personnel can utilize them should an emergency situation arise. The 1010 escapeway leads to the surface should the portal become compromised. There is also an exit along the 920 level that leads to a point of refuge in the open pit, therefore out of the underground mine. 10.6.3 Self Rescuers All personnel entering the underground mine will carry a self-contained self-rescuer on them at all times. This is to be used when an irrespirable or low visibility atmosphere arises. Each self-rescuer is inspected before use and formally every 12 months, this includes a pressure check to ensure the integrity of the self-rescuer. Workers are trained in the use of self-rescuers every 3 months.
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