15 December 2025:

Two new quarry consents for Stevenson Aggregates will help address the upper North Island’s demand for aggregate and sand.

The consents are for the Sutton Block hard rock quarry adjacent to Stevenson’s existing Drury Quarry and the Newcombe Road sand quarry in Cambridge.

Based on projections, the Sutton Block has 50 years of aggregate (240M tonnes) and Newcombe Road has 25 years of sand resource (7.5M tonnes). The image below shows the Sutton Block, with the existing Drury Quarry in the bottom lefthand corner.

Multiple environmental steps played a big part in the consents. These include 62ha of revegetation planting across the Drury site and 108ha of pest and weed control. Kaarearea Paa, located between the existing pit and the Sutton Block, will continue to be protected and will benefit from additional planting.

In addition to planting at the site, riparian planting and wetland restoration is proposed at Tuakau Quarry and planting at the Drury Islands in the Manukau Harbour.

From a carbon emissions perspective, Drury Quarry’s new electric crusher and conveyor system is significantly reducing diesel use and consent has been granted for an 8.2MW solar farm adjacent to the quarry.

The Newcombe Road quarry (shown below) could be operating within 12 months. The sand quarry is approved across an area of 23ha, with a 4ha plant area. There will be 12ha of riparian planting and wetland restoration along the Karapiro Stream which borders the site.

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