Mount Mann

Mt Mann is situated within the Lawlers district, Goldfields-Esperance Region, Western Australia — one of the continent's most geologically prospective yet hydrologically hostile corridors. The terrain is characterised by semi-arid to arid scrubland, shallow saline aquifers, and extreme diurnal temperature variance. Water supply infrastructure is operationally critical; bore-field management and on-site storage capacity directly govern processing continuity. Proximity to the Agnew-Lawlers greenstone belt underpins the polymetallic Sn-Ta-Li mineralisation profile.

The asset operates under a FIFO rotational roster model, with Kalgoorlie (KGI) serving as the primary personnel gateway. Workforce mobilisation relies on chartered light aircraft and road transport across unsealed outback tracks. Camp self-sufficiency — encompassing power generation, potable water treatment, and catering logistics — constitutes a significant operational expenditure vector for third-party service providers. The project's polymetallic output (Sn, Ta, Li) demands multi-stream processing competency and specialised reagent supply chains.

Ore handling at Mt Mann involves multi-stage comminution circuits adapted to the hard-rock pegmatitic host material typical of Goldfields lithium-tantalum deposits. Dense media separation (DMS) and gravity concentration are standard unit operations for tantalum recovery, while spodumene flotation governs lithium yield. Conveyor systems manage high-tonnage material transfer between crushing, screening, and processing nodes, requiring continuous mechanical maintenance under abrasive, dust-laden conditions. Reagent and consumable logistics represent a persistent supply-chain dependency for B2B vendors.

Tailings management is governed by WA Department of Energy, Mines, Industry Regulation and Safety (DEMIRS) frameworks, mandating engineered tailings storage facilities (TSFs) with lined containment and leachate monitoring. Progressive rehabilitation — including topsoil stockpiling, native seed propagation, and landform reconstruction — is embedded in the mine closure plan. The critical minerals value chain (Li, Ta, Sn) positions Mt Mann within global battery and electronics supply networks, attracting ESG-aligned offtake scrutiny and Scope 1/2 emissions reporting obligations under ASX disclosure standards.