Wednesday, April 14, 2010

New_Technology: #technology #new Jackhammer 'superdrill' could speed mine rescues: A drill now in development could reach miners t... http://bit.ly/ctqUsD

New_Technology: technology new Jackhammer 'superdrill' could speed mine rescues: A drill now in development could reach miners t... http://bit.ly/ctqUsD
at 1:32 PM
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