'Electronic ears' to guide mining drills

CSIRO scientists with the Minerals Down Under National Research Flagship have successfully used an electronic listening post to track and control a drill operating more than 300 metres below the Earth’s surface.

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<p><a href="http://www.physorg.com/news128695444.html">'Electronic ears' to guide mining drills</a></p> <p>CSIRO scientists with the Minerals Down Under National Research Flagship have successfully used an electronic listening post to track and control a drill operating more than 300 metres below the Earth’s surface.</p>