Story: Coal and coal mining

Hydraulic mining

Hydraulic mining

This diagram shows how water is effectively 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. However, underground mining was also revolutionised in New Zealand 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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Te Ara - The Encyclopedia of New Zealand

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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 the 21st centuries', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/diagram/7442/hydraulic-mining (accessed 30 March 2017)

Story by Alan Sherwood and Jock Phillips, published 12 Jun 2006, updated 7 Sep 2016