Stevenson has a long history of successful quarry management and of being environmentally and socially responsible operators.
With over 60 years of experience in quarrying and mining industries – including bulk earthworks, overburden stripping, mineral extraction and processing and distribution – we continue our commitment to deliver competitive quality aggregates that consistently meet customer expectations.
Stevenson owns and operates two quarries located at Drury and Huntly. These quarries service customers in the Auckland and Waikato regions and produce well over three million tonnes of aggregate annually when markets are in full swing.
Quarries, and the aggregates they produce, are essential to the development and economic prosperity of every region and community.
Did you know? Aggregates are one of the most important materials for the development of society. They are the resource most widely consumed by mankind, second only to water.
Major new infrastructure projects and urban development in the Auckland and Waikato regions will continue to place demand for a reliable supply of quality aggregate. With over 100 years of quarry rock reserves, Stevenson is well placed to continue servicing these markets well into future generations.
Dury Quarry is one of the largest and most technically advanced quarries in New Zealand. It incorporates a quarry based pugmill for producing modified aggregates. A greywacke resource, Drury Quarry ranks amongst the biggest producers of aggregate in the Auckland region, supplying over a quarter of its requirements. As such, Drury Quarry is vital to the Auckland region’s economy and its expanding infrastructure, providing an estimated economic benefit of around $40–50 million per annum according to independent experts.
Huntly Quarry, with its greywacke rock, is a key supplier to major roading infrastructure projects and readymix concrete plants in the Waikato. The Te Rapa Bypass section of the Waikato Expressway is a current project being supplied by Stevenson Huntly Quarry. Our recent plant addition, the quarry based pugmill (continuous mixing plant), produces high performance modified aggregates to meet demanding specifications.
Technical Services and Laboratory
We pride ourselves on our technical services and support. We have a strong focus and track record in research and product development with our Technical Services and IANZ certified Laboratory. Stevenson has technical representation on a number of leading industry bodies : Roading New Zealand’s NPTG (National Pavement Technical Group); AQA Technical Group (Aggregate and Quarry Association); CETANZ (Civil Engineering Testing Association).
In keeping with the continued industry trend of collaborative contracting methods, we welcome early customer engagement, in order to provide technical and operational input. Our involvement in the early stages of a project offers the potential to add significant value to customers’ project outcomes. Whether it involves our standard product range, recycled aggregates, modified aggregates or ”made to order” products, this early technical involvement provide benefits across the supply chain for the following:
- Asset owners / Developers
- Specifiers / Consulting Engineers / Pavement Designers
- Local authority engineers
- Producers of construction materials ( concrete, aggregate, masonry, asphalt)
Certification: We have held ISO 9001 Quality Certification since 1996. This quality management system ensures consistent application of procedures for the design, production and distribution of aggregates. A commitment to continually improve and innovate is part of the way we operate at Stevenson. We have also achieved Enviromark Certification to Diamond level. The Enviro-Mark programme is based on the requirements of ISO 14001:2004. In the critical area of safety Stevenson Resources has achieved Tertiary Level compliance with ACC Workplace Safety Management Practices.