Story: Coal and coal mining

Hydraulic mining

Hydraulic mining

This diagram shows how water was used in hydraulic mining. Safety considerations and the drive to obtain as much coal as possible from an area led to the progressive replacement of underground mining by opencast mines. Underground mining in New Zealand was also revolutionised by the use of high-pressure water jets to extract the coal, which was then transported out of the mine by the water.

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Source: Paul Mahoney, Charming Creek history album. Hokitika: New Zealand Forest Service, 1985

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How to cite this page:

Alan Sherwood and Jock Phillips, 'Coal and coal mining - The late 20th and early 21st centuries', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/diagram/7442/hydraulic-mining (accessed 23 September 2021)

Story by Alan Sherwood and Jock Phillips, published 12 Jun 2006, reviewed & revised 14 Apr 2021, updated 1 Sep 2016