GROUND CONDITIONS

Gravel, sand, silt, some slate, limestone, limited boulder, clay and hard rock

SYSTEM FEATURES

• Dual string drilling system with internal flushing or Single Drill String 

• Casing can be stopped at any depth while drilling continues with inner rod. 

• Higher drilling speed and depth compared to standard percussive drilling 

• Less wear through lower torque requirements

• Flexible system for a wide range of ground conditions