Limestone Te Ara Encyclopedia of New Zealand
Limestone is used mainly in a finely crushed form as an agricultural fertiliser and for roading aggregate In the early 2000s annual limestone production was valued at around $40 million There are two large quarries in the Waikato region and a quarry at Te Kuiti annually produces around 50 000 tonnes of high grade limestone Another at Ōtorohanga produces nearly 500 000 tonnes of lime