Lady Herial

Lady Herial is an underground gold mine situated within the Coolgardie district, Goldfields-Esperance region, Western Australia — one of the world's most prolific Archaean greenstone gold corridors. The semi-arid terrain generates persistent fine red-dust loading, imposing accelerated abrasive wear on filtration systems, rotating equipment seals, and air-intake assemblies. Vendors supplying consumables must engineer for high-silica particulate environments. Proximity to Kalgoorlie provides logistical access to regional supply chains and statutory services.

Lady Herial is an actively producing asset, with run-of-mine ore processed under an Ore Purchase Agreement at the Lefroy gold processing facility operated by a Gold Fields subsidiary. The site relies on:

• Underground mining contracting services (drilling, blasting, mucking cycles)
• Statutory management, blast design, and mine geology services sourced regionally from Kalgoorlie
• On-call mechanical workshop support to minimise costly unplanned downtime in a remote setting
• Reagent and consumable supply chains aligned to CIL-compatible gold processing

The operation employs narrow-vein underground extraction methodology consistent with the high-grade, structurally controlled gold mineralisation typical of the Coolgardie goldfield. Key engineering requirements include:

• Low-profile LHD loaders and narrow-heading jumbo drill rigs suited to constrained stope geometries
• Ground support consumables (mesh, bolts, shotcrete) for competent-but-faulted greenstone host rock
• Ventilation-on-demand systems to manage diesel particulate in confined headings
• Precision survey and blast-hole design to protect narrow ore boundaries and minimise dilution

Operating under the Work Health and Safety (Mines) Regulations 2022 (WA) and overseen by WorkSafe WA, Lady Herial is subject to rigorous site safety and environmental compliance obligations. Sustainability priorities include:

• Tailings storage and management governed by the processing facility's licensed infrastructure under Gold Fields' operational framework
• Progressive rehabilitation planning integrated into the mine closure strategy from the outset
• Dust suppression and water management protocols addressing the arid Goldfields environment
• Transparent ESG reporting aligned with ASX-listed operator disclosure requirements