Weston is home to the largest
Oamaru stone quarry in New Zealand, supplying New Zealand and exporting much overseas. The quarry lies a further mile inland from Weston along the Weston/Ngapara Road, so its daily operation is not noticed by Weston residents. International cement manufacturer
Holcim has gained consent to open a
cement plant near Weston, involving further limestone quarrying. The application prompted the founding of the Waiareka Preservation Society, which opposes the planned plant. Society members are worried how potential extra traffic through the township would impact on roading infrastructure. However, Holcim has stated a preference for rail transport between the cement works and harbour and would seek to reopen the line to Weston. The Weston operations were formerly operated by Taylor's Limeworks, a subsidiary of Holcim. Taylor's Limeworks consolidated their operations at
Mākareao (
Dunback) in 1990 with the opening of a new plant there. The limeworks at Weston were then sold to Parkside Quarries Ltd, who continue to mine lime and Oamaru stone at two sites. If the Weston Cement Works development goes ahead, new lime/tuff quarries will be established at the western edge of Parkside's operations. The cement works will be on land immediately west of the old Taylor's works at Cormacks. == Demographics ==