Kōrero: Soil investigation

Portable drilling rig

Portable drilling rig

This trailer-mounted drilling rig allows undisturbed cores of soil to be taken from depths of several metres. This is better than using an auger, which can only reach depths of 1–2 metres, and often disturbs the soil.

Te whakamahi i tēnei tūemi

University of Waikato
Photograph by David Lowe

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Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

P. J. Tonkin, 'Soil investigation - Golden age of soil survey: 1951–1985', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/14198/portable-drilling-rig (accessed 9 December 2021)

He kōrero nā P. J. Tonkin, i tāngia i te 24 Sep 2007