More suited to deeper deposits than augering,
or deposits with more overburden.
Acurate sampling without having to remove drilling tools from the hole.
A small diameter piezo installation is also possible through the middle of the dual wall drill pipe.
Flight Auger (CFA)
Very fast and particularly effective for
shallow terrace gravel deposits.
No Wash out of fines.
When you need results in a hurry.
Hollow Stem Augers
Slower than conventional augers, but has the
advantage of being able to install monitoring points. Or carry on
drilling with a rock bit for hard ground.
We have a 100mm split sampling barrel for our 100mm Hollow Stem Augers.
Shell and Auger
Accurate and versatile with high quality
samples, even underwater.
Shell and Auger drilling is suited to most formations.
Accurate grading and minimal ground damage.