Black Flag

The Black Flag prospect is situated within the Broad Arrow Mineral Field, Goldfields-Esperance region of Western Australia — one of the continent's most arid and thermally extreme operating environments. Annual rainfall averages below 250mm, rendering surface water virtually absent. Operational survival depends entirely on engineered water supply chains, including bore-field extraction and long-haul cartage. Terrain is characterised by flat, laterite-capped plains with sparse vegetation, demanding rigorous dust suppression protocols across all access corridors.

Horizon Minerals classifies Black Flag as an emerging prospect under active drill-out, positioning it in early-stage resource definition within the B2B project lifecycle. Vendor engagement windows are opening for:

• Reverse circulation and diamond drilling contractors
• Geochemical sampling and assay laboratory services
• Mobile mechanical workshops to minimise fleet downtime
• Camp establishment and site establishment contractors

Proximity to Kalgoorlie provides critical logistical depth for rapid mobilisation of specialised equipment and personnel.

At current prospect stage, surface infrastructure remains minimal; however, scalable engineering planning is underway. Future production scenarios will likely require:

• Modular conveyor systems for ROM pad to processing plant material handling
• Crushing and screening circuits adapted to lateritic and fresh rock ore types
• Dewatering infrastructure given shallow aquifer interference risk
• Haul road compaction and grading for heavy vehicle compliance

Intensive bulk material management via conveyors will be central to any future operational design.

Horizon Minerals operates under Western Australia's stringent Mining Rehabilitation Fund (MRF) obligations. ESG commitments at Black Flag encompass:

• Proactive tailings storage facility (TSF) design aligned with ANCOLD guidelines
• Progressive land rehabilitation and native vegetation offset planning
• Water management plans addressing zero-discharge targets
• Biodiversity baseline surveys prior to any disturbance escalation

Early-stage ESG integration reduces future remediation liability and strengthens social licence across the Goldfields-Esperance corridor.