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 3 of 27 Table of Contents 1 INTRODUCTION ............................................................................................................................................. 5 1.1 PURPOSE AND SCOPE .................................................................................................................................... 5 1.2 LEGAL REQUIREMENTS .................................................................................................................................. 5 2 MANAGEMENT SYSTEMS............................................................................................................................... 5 2.1 HSEC MANAGEMENT SYSTEM........................................................................................................................ 5 2.2 HIERARCHY OF CONTROLS ............................................................................................................................. 6 2.3 RISK ASSESSMENT PROCESS........................................................................................................................... 7 2.3.1 RISK MANAGEMENT ...................................................................................................................................... 7 2.3.2 HAZARD IDENTIFICATION .............................................................................................................................. 8 2.3.3 PREVENTATIVE AND CORRECTIVE ACTIONS ................................................................................................... 8 2.3.4 TRAINING AND COMPETENCY........................................................................................................................ 9 3 RISK ASSESSMENT PROCESS........................................................................................................................... 9 3.1 COMMUNICATION....................................................................................................................................... 10 4 ROLES AND RESPONSIBILITIES ..................................................................................................................... 10 4.1 SITE SENIOR EXECUTIVE ............................................................................................................................... 10 4.2 UNDERGROUND MINING MANAGER ........................................................................................................... 10 4.3 UNDERGROUND MINE FOREMAN................................................................................................................ 11 4.4 PRODUCTION ENGINEER.............................................................................................................................. 11 4.5 UNDERGROUND SHIFT SUPERVISOR ............................................................................................................ 11 4.7 UNDERGROUND MAINTENANCE SUPERINTENDENT .................................................................................... 12 4.8 EMPLOYEES ................................................................................................................................................. 12 4.9 COMPETENCY AND TRAINING...................................................................................................................... 12 5 EXPLOSIVES DELIVERY AND STORAGE.......................................................................................................... 12 5.1 EXPLOSIVES USED ON SITE........................................................................................................................... 12 5.2 DELIVERY AND RECEIPTING OF EXPLOSIVES................................................................................................. 12 5.3 ACCESS, SECURITY AND CAPACITY OF MAGAZINES ...................................................................................... 13 5.4 MAGAZINE RULES ........................................................................................................................................ 13 5.5 DAMAGED OR DETERIORATED EXPLOSIVES ................................................................................................. 14 5.6 INSPECTIONS AND STOCKTAKE .................................................................................................................... 14 6 EXPLOSIVES USE .......................................................................................................................................... 14 6.1 TRANSPORT TO AND FROM CHARGING SITE................................................................................................ 14 6.2 PRODUCTION CHARGING............................................................................................................................. 15 6.2.1 AUTHORISED CHARGING PLANS .................................................................................................................. 15 6.2.2 CHARGING PROCEDURES ............................................................................................................................. 15 6.2.3 SIGNS........................................................................................................................................................... 15 6.3 DEVELOPMENT CHARGING .......................................................................................................................... 15 6.3.1 DEVELOPMENT DESIGN ............................................................................................................................... 15 6.3.2 CHARGING PROCEDURES ............................................................................................................................. 15
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