Highlights

• Austral Resources has confirmed the successful delivery of a 4.75MW SAG mill to the Rocklands Copper Project site, the single largest procurement risk in the refurbishment programme.

• The mill was sourced domestically from Cobar, New South Wales, avoiding higher costs and longer lead times associated with an overseas procurement, before being transported approximately 1,700 kilometres to site.

• The simplified front-end circuit replaces the existing three-stage cone crushing system with a single SAG mill configuration, reducing operational risk and aligning with conventional copper concentrator designs used globally.

• A construction management contractor appointment is expected before the end of 2026, with the project targeted for completion and commencement of production in the second half of 2027.

Austral Resources Australia Limited (ASX:AR1), an ASX-listed copper producer trading under the ticker AR1, announced on 12 November 2026 that the SAG mill acquired for the restart of the Rocklands Copper Project had arrived at site at the company's Eastern Operations in Queensland. The delivery of the 4.75-megawatt as-new SAG mill, which was purchased in June 2026 from a source in Cobar, New South Wales, represents the completion of what the company described as the single largest procurement risk item in the Rocklands refurbishment programme. The mill was transported approximately 1,700 kilometres along public roads — a logistically demanding exercise given the scale of the components involved — and its safe arrival at site removes a critical path uncertainty that had been central to the restart project plan.

Significance of the SAG Mill Delivery

The decision to source the SAG mill domestically, rather than procure one from an overseas supplier, reflected a deliberate assessment of the trade-off between cost and lead time. International procurement of a mill of this size typically involves longer Manufacturing and shipping timelines, additional cost uncertainty associated with currency movements and freight logistics, and potentially extended Import and customs processes. By identifying an as-new mill available within Australia, the company was able to avoid these risks while also accessing equipment in a condition that meets the technical specifications required for the redesigned front-end processing circuit. The mill was purchased as part of a broader technical review of the Rocklands processing Facility undertaken by CMD Consulting earlier in 2026, which resulted in a decision to replace the existing three-stage cone crushing circuit with a single SAG mill configuration as a simpler, more proven, and lower operational risk approach to the comminution circuit.

Circuit Redesign and Technical Rationale

The technical rationale for the circuit redesign centres on the advantages of a SAG mill-based approach compared to a multi-stage cone crushing circuit. SAG mill technology is widely used in copper concentrators globally and is well understood in terms of design, operation, and maintenance requirements. By simplifying the front-end circuit from a three-stage arrangement to a single mill, Austral expects to reduce the number of mechanical interfaces and potential failure points in the processing plant, lower Capital intensity relative to building a comparable multi-stage crushing circuit from new, and align the Rocklands processing design with the operational templates that engineering and maintenance teams with conventional concentrator experience are already familiar with. The Front End Engineering and Design study for the new configuration was completed by GR Engineering Services.

Rocklands Restart Timeline and Next Steps

With the SAG mill now on site, the focus shifts to installation and the appointment of a construction management contractor to oversee the front-end modifications required to integrate the mill into the Rocklands processing plant. The company indicated it expects to appoint this contractor before the end of 2026, with the construction and commissioning programme expected to result in the project being completed and entering production in the second half of 2027. Austral Resources operates dual processing facilities in Queensland — the Lady Annie copper oxide heap leach and solvent extraction electrowinning plant in the west, and the Rocklands copper sulphide concentrator in the east. The restart of Rocklands, with its significantly larger nominal processing capacity, is a central element of the company's strategy to build toward a position as Australia's next mid-tier copper producer, underpinned by a substantial copper mineral resource inventory across its combined Queensland assets. From the company's perspective, the successful delivery of the SAG mill also represents a de-risking of the Rocklands restart project budget and schedule, since the mill's arrival on site converts an open procurement commitment — with associated cost and timing uncertainty — into a fixed asset that can now be incorporated into the construction programme planning with greater certainty. The installation phase, while complex in its own right, is a more controllable sequence of activities than the procurement and logistics challenge of sourcing and transporting a large industrial mill across a 1,700-kilometre journey. The SAG mill delivery also highlights the importance of the domestic Mining equipment Supply chain in enabling Australian copper projects to advance on competitive timelines. The ability to identify, acquire, and transport a large-scale processing component from within the country — without the currency risk, shipping lead time, or import complexity associated with offshore procurement — is a supply chain advantage that Australian mining projects can Leverage when equipment becomes available from elsewhere in the domestic mining sector. For observers of the Australian copper sector, the Rocklands restart represents one of the more visible examples of a brownfield copper project being brought back into production through a systematic refurbishment programme funded by the Equity of a listed company with existing operating infrastructure nearby. The dual-facility operating model that Austral is building — heap leach for oxide copper at Lady Annie and conventional sulphide concentrator at Rocklands — provides geographic and processing Diversification that many single-facility copper producers lack. The SAG mill's safe delivery after a 1,700-kilometre road journey is a small but practically significant milestone that demonstrates the logistical competence of the team managing the restart, and the domestic sourcing of the equipment highlights how the availability of specialised mining equipment within the Australian market can provide both cost and schedule advantages over offshore alternatives.

Key Insights

With the SAG mill now on site, the focus shifts to installation and the appointment of a construction management contractor to oversee the front-end modifications required to integrate the mill into the Rocklands processing plant. The company indicated it expects to appoint this contractor before the end of 2026, with the construction and commissioning programme expected to result in the project being completed and entering production in the second half of 2027. Austral Resources operates dual processing facilities in Queensland — the Lady Annie copper oxide heap leach and solvent extraction electrowinning plant in the west, and the Rocklands copper sulphide concentrator in the east. The restart of Rocklands, with its significantly larger nominal processing capacity, is a central element of the company's strategy to build toward a position as Australia's next mid-tier copper producer, underpinned by a substantial copper mineral resource inventory across its combined Queensland assets. From the company's perspective, the successful delivery of the SAG mill also represents a de-risking of the Rocklands restart project budget and schedule, since the mill's arrival on site converts an open procurement commitment — with associated cost and timing uncertainty — into a fixed asset that can now be incorporated into the construction programme planning with greater certainty. The installation phase, while complex in its own right, is a more controllable sequence of activities than the procurement and logistics challenge of sourcing and transporting a large industrial mill across a 1,700-kilometre journey. The SAG mill delivery also highlights the importance of the domestic mining equipment supply chain in enabling Australian copper projects to advance on competitive timelines. The ability to identify, acquire, and transport a large-scale processing component from within the country — without the currency risk, shipping lead time, or import complexity associated with offshore procurement — is a supply chain advantage that Australian mining projects can leverage when equipment becomes available from elsewhere in the domestic mining sector. For observers of the Australian copper sector, the Rocklands restart represents one of the more visible examples of a brownfield copper project being brought back into production through a systematic refurbishment programme funded by the equity of a listed company with existing operating infrastructure nearby. The dual-facility operating model that Austral is building — heap leach for oxide copper at Lady Annie and conventional sulphide concentrator at Rocklands — provides geographic and processing diversification that many single-facility copper producers lack. The SAG mill's safe delivery after a 1,700-kilometre road journey is a small but practically significant milestone that demonstrates the logistical competence of the team managing the restart, and the domestic sourcing of the equipment highlights how the availability of specialised mining equipment within the Australian market can provide both cost and schedule advantages over offshore alternatives.