Carlotta
Operation Details
Compliance & B2B Logistics
Access Logistics & DIDO
Primary access via Mount Leewin Loop Road, Carlotta (Lot 101); regional haul routes subject to seasonal road closures due to heavy rainfall in South West WA; DIDO operations assumed from nearest regional hub.Project Logistics & B2B Overview
Geographic Location and Topography
The Mount Leewin Loop Carlotta site (Lot 101, Mount Leewin Loop Road) operates within Western Australia's South West Mining Field, a region characterised by undulating lateritic terrain and dense karri-jarrah forest cover. The South West receives some of Australia's highest annual rainfall, routinely exceeding 1,200 mm. This creates significant haul-road degradation risk, demanding continuous gravel compaction, geotextile reinforcement, and active mud management protocols to maintain truck access and prevent load-bearing failure on unsealed access corridors.
B2B Lifecycle and Operational Profile
Operating under 100% private ownership by The Trustee for Worthington Family Trust, this is a single-commodity construction materials operation focused on gravel extraction. Operational continuity relies on:
- Diesel-powered mobile plant (excavators, loaders, haul trucks) with high fuel burn rates
- Dependence on grid or generator-backed power for ancillary processing and site lighting
- Local DIDO workforce rotations from South West regional centres
- Compliance with WA Department of Mines, Industry Regulation and Safety (DMIRS) operating conditions
Extraction Engineering and Infrastructure
Construction materials quarrying at this scale typically deploys a primary crushing and screening circuit rather than flotation-based processing. Key engineering demands include:
- Jaw or impact crusher for primary size reduction of laterite/gravel material
- Vibrating screen decks for graded aggregate classification
- Wash plant integration where clay-bound fines require hydraulic separation
- Stockpile management for multiple product grades (road base, drainage aggregate, fill)
- Stormwater diversion bunds critical given high-rainfall exposure
ESG, Value Chain and Sustainability
As a private family trust operation, formal ESG reporting frameworks are not publicly mandated. However, South West WA regulatory requirements impose baseline environmental obligations:
- Progressive rehabilitation and native vegetation offset obligations under WA Mining Act
- Erosion and sediment control plans (ESCP) mandatory given rainfall intensity
- Opportunity exists for solar-hybrid power to offset diesel dependency on ancillary loads
- Short haul distances to regional construction markets reduce Scope 3 transport emissions