Cascade

The Cascade Gypsum Mine operates within the Dundas Mineral Field, Goldfields-Esperance region of Western Australia — one of the continent's most climatically hostile jurisdictions. The terrain is characterised by flat to undulating semi-arid scrubland, extreme diurnal temperature variation, and chronic water scarcity. Hydrological supply chain management is a primary operational constraint, with potable and process water requiring long-haul cartage or dedicated bore infrastructure to sustain any continuous extraction cycle.

As an operating asset, Cascade maintains an active extraction cycle targeting sedimentary gypsum deposits typical of ancient lacustrine environments in the Dundas region. Operational continuity depends on:

• Diesel-powered heavy fleet running 24/7 extraction and haulage rotations
• Dependence on mobile or fixed power substations for processing and ancillary loads
• Fuel logistics contracts with regional distributors servicing remote Goldfields corridors
• Rotating workforce schedules aligned to DIDO patterns from Esperance or Norseman

Gypsum extraction in this geological context typically involves shallow open-cut benching with low strip ratios. Material handling relies on:

• Wheeled loaders and rigid-body haul trucks for primary extraction
• Conveyor belt systems for bulk transfer to crushing and screening circuits
• Scalping screens and jaw crushers for product sizing to agricultural or industrial grade
• Stockpile management pads with direct-load truck dispatch to end markets

Dust suppression infrastructure is operationally critical given the exposed, wind-prone landscape.

Gypsum operations in WA's Goldfields face increasing pressure to align with ESG decarbonisation frameworks. Key sustainability vectors applicable to Cascade include:

• Diesel displacement via hybrid solar-battery microgrids for camp and processing loads
• Transition pathways toward electric light vehicles (ELV) for site personnel movement
• Rehabilitation obligations under WA DMP tenure conditions post-extraction
• Gypsum's inherent value as a low-carbon soil amendment positions the product favourably within circular economy narratives