Boranup Limesand

Boranup is situated within the South West Mining Field of Western Australia, embedded in the ecologically sensitive Margaret River–Leeuwin-Naturaliste corridor. The site operates in close proximity to the Boranup Karri Forest and the Leeuwin-Naturaliste National Park, imposing strict constraints on surface hydrology management. Operators must implement engineered drainage controls to prevent sediment mobilisation into adjacent wetland and groundwater-dependent ecosystems, a non-negotiable compliance requirement under WA DER and DWER frameworks.

The operation is currently in active production status, with mining lease M70/1302 held by Enmic Pty Ltd and day-to-day operations managed by Lime Industries and its commercial subsidiary Optima Lime. Workforce logistics rely on DIDO rotational rosters sourced from the Busselton and Margaret River labour catchments, eliminating the need for on-site camp infrastructure. B2B procurement and supply agreements are channelled through Optima Lime's commercial division, which services agricultural, construction, and industrial lime markets across South West WA.

• Operator: Lime Industries Pty Ltd
• Commercial arm: Optima Lime (subsidiary)
• Lease holder: Enmic Pty Ltd — M70/1302
• Status: Operating
• Primary market: Agricultural lime, construction fill, industrial calcium carbonate

Boranup employs open-cut dry mining techniques suited to shallow, unconsolidated limesand deposits characteristic of the Tamala Limestone formation. Material handling relies on mobile screening and crushing plant, with conveyor belt systems managing bulk transfer from extraction face to processing and stockpile zones. Given the low-density, free-flowing nature of limesand, dust suppression infrastructure and sealed haul roads are critical operational requirements. Processing circuits target particle size classification for direct agricultural application and blended lime products.

• Tamala Limestone formation — shallow unconsolidated profile
• Mobile screening and primary crushing units
• Conveyor-fed stockpile management for bulk throughput
• Dust suppression systems — mandatory under EPA licence conditions
• Sealed internal haul roads for load-bearing compliance

Operating within a nationally recognised biodiversity corridor, Boranup faces elevated ESG scrutiny relative to comparable limesand operations. Progressive rehabilitation obligations require concurrent revegetation with native Karri and Marri species post-extraction. While no confirmed on-site solar microgrid or electric vehicle fleet deployment has been publicly disclosed, the regional South West WA grid increasingly incorporates renewable energy, partially decarbonising fixed plant consumption. Lime Industries' alignment with agricultural sustainability narratives — lime as a soil carbon and pH management input — positions the operation within broader circular economy and land remediation value chains.

• Progressive native revegetation — Karri/Marri species reinstatement
• Proximity compliance: Leeuwin-Naturaliste NP buffer zone management
• Agricultural lime supply supports soil carbon sequestration outcomes
• Grid decarbonisation pathway via SW Interconnected System (SWIS)
• ESG reporting obligations under WA Mining Act rehabilitation bonds