Story: Rock, limestone and clay

Phosphate shipment, Ravensbourne

Phosphate shipment, Ravensbourne

New Zealand imports almost all of its phosphate, as local sources are negligible. Fertiliser works such as those at Ravensbourne in Otago process it into superphosphate. When the nearby Milburn phosphate deposits were quarried in the 1920s, it was local rather than imported phosphate that was railed to Ravensbourne – over a distance of some 50 kilometres.

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Ravensdown Fertilizer
Photograph by Mike Arnold

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How to cite this page:

Carl Walrond, 'Rock, limestone and clay - Raw materials', Te Ara - the Encyclopedia of New Zealand, (accessed 14 April 2024)

Story by Carl Walrond, published 12 Jun 2006