These were originally designed to sample for minerals in beach sands but are now used extensively for drilling and sampling in very sandy friable soils. A 75mm diameter sand auger will penetrate 30cm in about 4 turns, which fills the auger.
In good conditions, one man can drill 10 metres in an hour.
Heavy Duty version made from thicker steel (same thickness as equivalent sized soil augers). Item code for HD versions have “/HD” at the end eg
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