The incident happened at Karara's mine in Western Australia's Mid West in 2015.
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Seven workers and members of the public were in the exclusion zone at the time but escaped injury.
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The worker had been installing a cable at the roof level using a converted wheel loader.
In the wake of the incident DMIRS tells miners to check the condition of backfilled stopes.
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Once operations come to an end mines can fall into disrepair and become increasingly hazardous.
Safety is still a factor at workplaces in the state.