Hollow Stem Auger

No drilling fluids or air circulation required for drilling, this provides many advantages over drilling systems that use water or air circulation. When the drill hole reaches target depth & for integrity of construction the outer hollow augers remain until monitor well or instrumentation is installed; then the outer hollow auger is with drawn.  

• Fast
• Excellent Monitor Well integrity
• No contamination from drill fluids
• Two sizes avalable - 200mm O.D, and 100mm O.D