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This method of drilling utilises rotary percussive action (as DTH method) with the percussive action being provided by a special top hammer (DRIFTER) assembly.

Both pneumatic and hydraulic drifter versions are available and flushing can be either air or water (see flushing)

Whilst it is an extremely effective method of drilling in rock, its limitations come with depth and hole diameter.

Product Sections: Extension Equipment, Integral Drill Steels, Casing Systems, Lubricants, Hand Tools.

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