BCI Minerals Ltd (ASX:BCI): How Is Mardie Progressing Towards Its First Salt Shipment?

Aditi Sarkar

28 October 2026 03:07 PM AEDT

BCI Minerals Ltd (ASX:BCI): How Is Mardie Progressing Towards Its First Salt Shipment?

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Highlights

Mardie reached 90% salt-first construction completion at 30 September 2026.
Crystallised salt increased to 266,000 tonnes as more cells entered operation.
Port dredging finished, with port construction reported at 98% complete.
Estimated construction cost to complete declined to $178M, against $316M of available funds.
The first salt shipment remains dependent on summer evaporation and commissioning conditions.

BCI Minerals Ltd (ASX:BCI) is developing the Mardie solar salt operation and sulphate of potash project in Western Australia’s Pilbara region, with plans to supply industrial salt to customers in Asia. Its 20 October 2026 update reported increased crystallisation, completed dredging and construction progress ahead of commercial shipment.

Salt Crystallisation and Construction Advance

At 30 September 2026, BCI Minerals Ltd (ASX:BCI) reported 266,000 tonnes of crystallised salt, compared with 49,000 tonnes at the end of June. The material contributes to permanent salt pavement, which forms the stable base needed for subsequent harvesting. Winter crystallisation was below forecast as the company prioritised brine transfer ahead of summer.

Twelve lined crystalliser cells were commissioned, versus eight at the previous quarter-end. Sixteen further cells remained to be lined, with progressive completion scheduled through the final quarter of FY27. BCI Minerals Ltd (ASX:BCI) reported salt-first construction at 90% complete, or 87% when the crystalliser lining program is included. At the salt wash plant, product conveyor installation progressed and completion was expected in late calendar 2026.

Port Readiness and Potash Pilot Development

Port of Mardie construction reached 98% completion during the September quarter. Dredging was completed and the marine works package finished, leaving conveyor installation and final commissioning among the outstanding activities. BCI Minerals Ltd (ASX:BCI) said the interim transhipment vessel, CSL Osprey, was being upgraded ahead of its arrival for jetty wet commissioning. Construction work also continued on the Mardie Spirit transhipment vessel.

Separately, BCI awarded a contract for a 150 kg/hr containerised sulphate of potash pilot plant. Detailed design is scheduled for completion by the end of the March 2027 quarter. The pilot will test Mardie feedstock separately from salt commissioning.

Funding Position and Delivery Risks

The September update put cumulative Mardie expenditure at $1,586M, including $1,265M of construction costs. Estimated construction cost to complete was $178M, down from $258M at the June quarter-end. Available funds were $316M at 30 September, compared with $423M three months earlier. BCI Minerals Ltd (ASX:BCI) drew $119M from its syndicated debt facility during the quarter, bringing drawn debt to approximately $706M. Cash at bank totalled $110.3M.

Funding must cover commissioning, while debt adds obligations before regular salt sales. Weather is a central uncertainty: salt crystallisation depends on evaporation, and rainfall or cyclone conditions may affect the timing of harvesting. Product quality testing, wash plant readiness and vessel commissioning also remain important operational steps.

What the Next Operating Milestones Involve

BCI Minerals Ltd (ASX:BCI) continues to work towards first salt on ship in calendar 2027, but its October update did not present the timing as unconditional. Summer evaporation is important to building inventory. Its samples supplied to customers continued to meet contracted product specifications during the September quarter; commercial harvesting and shipping nevertheless require further execution.

Next milestones include crystalliser handovers, salt wash plant completion and jetty commissioning. BCI’s planned production scale also depends on progressive commissioning rather than the crystallised inventory alone.

Key Insights

The latest reported position combines substantially more crystallised salt with advanced port construction and a reduced remaining construction estimate. For BCI Minerals Ltd (ASX:BCI), the distinction between salt already crystallised and salt successfully harvested, processed and shipped remains essential. Mardie’s next stage depends on weather, completion of critical infrastructure and the operational performance of its integrated salt-handling system.

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