DANGER FROM A MISFIREINCIDENT There was an explosion under the bucket of a face shovel while it wasdigging The shovel was badly damagedNo one was badly hurt but there could have been very bad injur ID: 123287
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SAFETY ALERT DANGER FROM A MISFIREINCIDENT There was an explosion under the bucket of a face shovel while it wasdigging. The shovel was badly damaged.No one was badly hurt, but there could have been very bad injuries.CIRCUMSTANCES A shovel was digging in an open cut mine during the night shift. There was anexplosion under the shovel’s bucket. Flyrock hit the shovel and a drill rignearby.No one told the shovel operator about any possible misfired holes whichmight still have been in the ground.It was hard to see if there was any sign of a misfire because of the artificialnight lighting.INVESTIGATION Some holes were misfired in the first firing of the area two days before. Someholes were still misfired after a second firing.Communications were not clear between the day shift and the night shiftabout the result of the refiring.RECOMMENDATIONS Competent shotfirer to check each blast for misfires. Develop and implement a risk-assessed procedure for dealing with misfires. Investigate different systems to assess blast control and potential misfires. eg: Video and blast monitoring equipment to check each hole has fired as planned. Train crews in misfire safety procedures. Review blasting procedures whenever a misfire occurs. R Regan ASSISTANT DIRECTOR SAFETY OPERATIONS P:\DOCUMENTS\141627000_181812000 Report No: SA Prepared by: Mark Stephens Date Created: 18/10/01