Clay tile pipes are very hard and long-lasting; they continue to be effective as long as they are not blocked by mud or plant roots. The pipes are usually covered with a coarse material such as gravel to allow water to easily enter through the joins between pipes, and to filter out soil. These pipes were being laid in Southland in 1948.
Te whakamahi i tēnei tūemi
Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference:
AANR 6329 21 DA38,508
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