ENVIRONMENT

Blast hole near miss

WHEN drilling a pattern it is often a good idea to check that there have not been blast holes drilled and charged in the area beforehand.

The blast hole next to a hole that contains a misfire.

The blast hole next to a hole that contains a misfire.

That is the conundrum that faced a driller at a New South Wales open cut mine. While drilling a shot pattern a drill rig inadvertently drilled a hole about 300mm from an unknown misfire in the previous...

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