Experience – Knowledge – Reputation – History.

We have a long history of working with aggregate producers, refining production methodology, understanding resource characteristics, developing new products and quality control testing of aggregates.

We test Quarry products from quarry face to road pavement. Our team has, contributed to national aggregate research projects, participated in NZTA Pavement Technical committees and supplied testing to some of New Zealand’s largest roading projects.

We are a member of Roading New Zealand and the Quarry and Aggregates Association (AQA). Our team members are Institute of Quarry (IOQ) and Civil Engineering Testing Association New Zealand (CETANZ) members.

Stevenson Laboratory is charged with executing a massive testing program for Stevenson Drury and Huntly quarries as part of their ISO accreditation. We carry out thousands of aggregate tests a year for Stevenson Group, ensuring that premium products are within spec and of the highest quality and consistency. We gather historical data and understand the resources we are dealing with. We trouble shoot production, plant, source rock, stockpile management and tractability issues. We supply blend design expertise to pugmill and fractionalization plants, and can help with product development and made to order materials.

We offer these same services to other quarrying businesses.