Supporting Technical Assessments

Reference Event Date Event Type Location: Short Observation Detailed Observation Immediate Actions Taken: Workgroup AI-4210 05/05/2009 12:00 AM Incident Report Production Area - Waihi Electrical Fire In Mcc03 An electrical Fire occurred at Newmont Waihi Gold's mill on Tuesday 5 May. The Fire started at 11.32am in the Mill Motor Control Centre (MCC) switchboard and circuitry and was brought under control by on-site rescue teams and emergency services. The Fire was reported extinguished at 12.13pm. All staff were accounted for and no injuries were sustained. There is, however, major damage sustained to the switchboard and circuitry for the Treatment Plant. Emergency services alerted. Power board alerted to isolate power to site. Fire put out by local Fire brigade and site Mines Rescue Team. Area cordoned off to secure area for investigation. Power restored to underground, water treatment plant, and deve 12.2.3.1.1 Processing AI-4411 19/11/2009 12:00 AM Incident Report Production Area - Waihi Ro Bund Flooded While flushing the RO concentrate line during a pigging operation water was required. A line from the Fire suppression system was piped over the bund wall. Water almost flooded electric motors. EAMM# 18021 Legacy Data 12.2.3.1.1 Processing AI-4472 14/02/2010 12:00 AM Incident Report Production Area - Waihi Dl 400 Caught On Fire Operator noticed oil on the ground while reversing out of rock box. Then noticed smoke. Shut down machine. Another operator arrived and extinguished Fire. EAMM# 19588 Legacy Data 12.2.3.1.1 Processing AI-4532 07/04/2010 12:00 AM Incident Report Production Area - Waihi Fire In Rubbish Bin Staff member on leaving meeting could smell burning in welding bay. He found a Fire burning in a rubbish bin and used a Fire extinguisher to put it out. EAMM# 20787 Legacy Data 12.2.3.3.1 Processing Maintenance AI-2359 09/05/2011 12:00 AM Incident Report Production Area - Waihi Burst capacitor at MCC Transfer Staton Capacitor in power factor correction panel burst. At approx 4.20pm Monday 9th May a Smoke alarm for Transfer station activated on Scada and smoke was observed to be coming out of Transfer Station MCC. The Fire alarm sounded at MCC. Maintenance and Electrical Supervisors inspected the MCC finding smoke but no flames. The cause was found to be a faulty power factor capacitors. The power factor correction was isolated and the MCC de-isolated. Isolated power on main MCC. Called security to call Fire brigade. The power factor unit at waste load out was also isolated. 12.2.3.3.1 Processing Maintenance AI-9549 09/03/2012 12:00 AM Incident Report Production Area - Waihi Small Fire (grease in bearing) in NWG maintenance workshop An electrician was removing a bearing from a motor. As the bearing would not move with the hydraulic puller, heat was applied to the bearing with a gas torch and grease in the bearing caught Fire. The electrician used a Fire extinguisher to put out Fire. Fire extinguisher was used to put out Fire immediately after discovered. Reported to Supervisor. Photos taken. - No damage resulted. 12.2.3.3.1 Processing Maintenance AI-36214 15/01/2014 12:00 AM Incident Report Production Area - Waihi Power Pack Cable Melted Fitter using welder to hardface area in bottom of hopper and feeder observed cable to hydraulic power pack hot and smoking. Noticed by spotter/Fire watch. Stopped welding, contacted electricians. Investigated. 12.2.3.3.1 Processing Maintenance AI-37226 12/03/2014 12:00 AM Incident Report Production Area - Waihi Activation of Smoke Alarm in Newmont Maintenance Workshop While cooking a BBQ in workshop to celebrate a certificate ceremony, the fat tray caught Fire, creating smoke and activating the smoke alarm. Let Fire burn out. 12.2.3.1.1 Processing 195506 04/04/2017 12:45 PM Incident Report Extinguished canvas welding screen Fire in process workshop hot work bay Contract fitter left freshly painted pipework on workbench with gas heater positioned blowing hot air to dry the paint. A canvas welding screen nearby was caught by the wind, blowing it towards the heater, eventually causing ignition. Two personnel standing nearby immediately observed the flames and extinguished small Fire with dry powder extinguisher. Mill manager notified Area ventilated Area barricaded GM notified Investigation Commenced Collected contract fitters stop n think for task 12.2.3.3.1 Processing Maintenance 269244 20/11/2017 3:01 AM Incident Report Smoke in MCC 3 set off VESDA alarm Smoke in MCC 3 set off VESDA ( Early smoke/ Fire detection system ) which alarmed to Mill Control then shortly after second stage activated the fail safe power disconnect circuit shutting down the Mill site power . Called out Fire Brigade and Site Mines Rescue Waihi Processing Maintenance Electrical 288353 07/03/2018 1:35 PM Incident Report A battery was being load tested in the electrical workshop using a 12volt siren/beacon assembly as the load. While being powered by the battery the beacon portion of the assembly caught Fire. A battery was being load tested in the electrical workshop using a 12volt siren/beacon assembly as the load. While being powered by the battery the beacon portion of the assembly caught Fire. Fire extinguished, scene secured, photo's taken, statements obtained and Worksafe notified. Waihi Processing Maintenance Electrical 289844 17/03/2018 8:00 AM Incident Report ROM pad Starter motor Fire on 20 tonne digger A contract digger operator had completed a pre-start on the contractors machine and was allowing machine to warm up when he noticed smoke coming from engine bay. The operator opened side door on hydraulic pump side and saw flames in the engine compartment. operator went to drivers side of the machine and isolated machine and grabbed Fire extinguisher, returned to hydraulic side door and extinguished Fire. Opened engine cover to ventilate engine bay and check Fire fully extinguished. Shift supervisor notified & scene secured. Fire extinguished Shift supervisor notified Scene secured On call area supervisor notified WorkSafe notified Waihi Processing Production Shift A

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