About

Wallerawang Quarry is a quartzite opencut mine located 150kms west of Sydney, adjacent to the Great Western Highway, 2.5km from Wallerawang. The Quarry has NSW Government approval, DA-344-11-2001 which allows mining extraction of up to 500,000t/year of quarry products and is approved until July 2040. Together with the JORC certified reserves the ‘inferred reserves’ will allow mining until well into the future.

The quartzite is crushed and screened in-pit (the quarry began producing in 2015) and with the recently constructed CDE Wash Plant which produces Fine and Coarse sand together with a pebble wash facility.

Products are dispatched from the Wallerawang Quarry which has direct access to the Great Western Highway.

The Quarry weighbridge is four separate weighbridges at B double length and weighs each group of axles to ensure that legal weights are not exceeded.

The quarry also supplies high grade thermal resistivity sand for the construction of wind farms and other electrical/solar installations.

Technical details: NATA test results are available for all material requiring conforming certification forms or Australian Standards.

The Challenge

Walker Quarries needed a more efficient and sustainable way to process sand and aggregates. The goal was to eliminate reliance on tailings ponds, improve material recovery, and meet growing demand for specification-grade products — particularly clean, consistent sands for local construction and specialised drainage applications.

The Solution

In partnership with CDE, we implemented a custom-built sand washing plant tailored to our Marrangaroo quarry. The system is designed to produce two manufactured sands (0–3mm and 3–5mm) and six aggregate sizes ranging from 5mm through to +75mm oversize. Integrated water recovery technology allows us to recycle process water and remove the need for tailings ponds entirely.

The Result

The plant has expanded our production capabilities, improved environmental performance, and opened new supply opportunities — including materials for concrete, drainage infrastructure, and sports field foundations. With more flexibility, less waste, and better control over grading, it represents a major step forward in our commitment to quality and sustainable quarrying.

Safety First – Everyone goes home safe. The company has built a culture of safety through proactive training, regular audits, and on-site practices that protect our people and partners together with compliance will all local and state regulations (see Statutory Requirements on the Walker Quarries website).
For more detail, refer to our Occupational Health & Safety Policy, Fatigue Management Policy, and Drug & Alcohol Policy.

Environmental Sustainability – The quarry operations include progressive environmental management: dust suppression systems, water recycling, rehabilitation zones, and emission-conscious machinery.
These practices are guided by our commitment outlined in the Environmental Policy.

Quality & Reliability – Walker Quarry’s clients rely on timely delivery and consistent quality. The company has built systems and a supply chain that fulfils that promise, even in high-volume conditions. All quarry products come with certified NATA testing.

Local Commitment – The quarry employ local workers, engages regional contractors, and give back through community initiatives. Ongoing community consultation is through the Wallerawang Community Committee – all minutes of CCC meetings are available on the Walker Quarries website — and being a small business which supports the local region.