Harewood Sand Mine

Harewoods Dalyellup is situated within the South West Mining Field of Western Australia, a coastal-plain corridor characterised by low-relief aeolian limestone deposits and shallow water tables. The site operates in close proximity to Geographe Bay coastal ecosystems and Tuart woodland remnants, requiring rigorous surface hydrological management to prevent saline intrusion and sediment mobilisation into adjacent conservation buffers. Stormwater diversion bunding and engineered drainage swales are standard operational controls at this latitude.

The operation is classified as Operating, supplying construction-grade limestone and limesand to regional civil and building markets across the South West. Continuous extraction demands sustained diesel combustion across the mobile fleet — scrapers, front-end loaders, and haul trucks — with energy dependency on grid-tied or generator-backed subestations to maintain crushing and screening circuits. Piacentini and Son Pty Ltd manages the full value chain from pit-face extraction through to product dispatch, enabling direct B2B procurement engagement.

Limesand extraction at Dalyellup employs open-cut quarrying methodology with mechanical ripping and free-digging techniques suited to unconsolidated carbonate formations. Processed material is transferred via conveyor belt systems linking the extraction face to primary screening and stockpile zones, minimising double-handling and reducing haul cycle times. Scalping screens and trommel units classify product fractions for civil fill, road base, and agricultural lime applications. Infrastructure scalability is constrained by the site's shallow overburden profile and proximity to residential growth corridors in Dalyellup.

As a regional quarry operator, Piacentini and Son faces increasing ESG decarbonisation pressure aligned with Western Australia's net-zero trajectory. Key sustainability vectors applicable to this operation include:

• Solar hybrid integration to offset diesel consumption in fixed plant and site facilities
• Progressive rehabilitation and native vegetation reinstatement post-extraction
• Transition pathways toward electric light vehicles (ELV) for site personnel movement
• Dust suppression and noise attenuation protocols to meet EPA licence conditions
• Water recycling within wash and screening circuits to reduce freshwater drawdown