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power auger

http://resource.geosciml.org/classifier/cgi/boreholedrillingmethod/power_auger

notation 1.2 more like this
definition Mechanically-driven auger drilling, typically used in hard ground or for holes that are too wide or deep for hand auger drilling. Auger drilling is done with a helical screw which is driven into the ground with rotation; the earth is lifted up the borehole by the blade of the screw. Small power augers can be portable or mounted on the back of a utility truck, with larger auger rigs used for construction, like sinking piles for bridge foundations or mine shafts. more like this
source https://en.wikipedia.org/wiki/Drilling_rig#Auger_drilling more like this
type
Resource original
Concept original
broader
http://resource.geosciml.org/classifier/cgi/boreholedrillingmethod/auger original
narrower power_auger original
in scheme boreholedrillingmethod original
is primary topic of power_auger