Onslow Iron

Project Logistics & B2B Overview

Geographic Location and Topography

Onslow Main is a construction materials quarry situated within the Ashburton Mining Frontier (MF) of Western Australia's Pilbara region. The site operates under extreme arid conditions, with ambient temperatures routinely exceeding 45°C during summer months. This thermal environment imposes critical constraints on heavy machinery performance, requiring mandatory heat management protocols — including engine coolant monitoring, scheduled cool-down cycles, and shaded equipment staging areas — to prevent thermal shutdown and unplanned downtime.

B2B Lifecycle and Operations

As an operating asset, Onslow Main sustains continuous extraction cycles to supply construction aggregates to regional infrastructure projects, including road base, coastal development, and civil works tied to the broader Onslow industrial corridor. Operations depend on:

• Diesel-powered drill rigs, loaders, and haul trucks running 24/7 rotations
• Dedicated power substations supplying crushing and screening circuits
• Fuel logistics contracts for uninterrupted diesel supply in a remote setting
• Shift-based workforce management under DIDO or FIFO arrangements

Engineering and Extraction Infrastructure

Material handling at Onslow Main relies on integrated crushing and conveying systems designed for high-throughput aggregate processing. Key engineering components include:

• Primary jaw crushers feeding secondary cone or impact stages
• Conveyor belt networks transferring crushed material across stockpile zones
• Vibrating screens for graded aggregate classification
• Dust suppression systems — critical given Pilbara's arid particulate environment
• Water management infrastructure for processing and road suppression

ESG, Value Chain and Sustainability

Construction material operations in the Pilbara face mounting pressure to align with ESG decarbonisation targets. For Onslow Main, the strategic pathway includes:

• Potential integration of solar hybrid microgrids to offset diesel consumption in crushing circuits
• Transition roadmap toward electric or hybrid light vehicles on-site
• Dust and noise impact reporting aligned with WA DMP environmental conditions
• Aggregate supply chain traceability supporting green infrastructure procurement standards