GROUNDWATER

When rotary bits hit rock bottom, it's hammer time

Switching to a DTH hammer can maximise productivity in the toughest of rock formations

Joe Haynes
 A down-the-hole (DTH) hammer excels at boring through rocky soil and solid rock because of its percussive operation

A down-the-hole (DTH) hammer excels at boring through rocky soil and solid rock because of its percussive operation

Regions with the hardest rock formations require the most powerful tools to drill boreholes for water wells. Mud rotary and tricone bits easily drill through soft to medium soil formations but switching...

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