South32 Gemco Manganese Exports Resume After Cyclone Megan Recovery

South32

South32 Gemco manganese exports restarted as the Australian metal producer shipped its first ore cargo since early 2024 from the Northern Territory mine. The South32 Gemco manganese exports resumption follows extensive recovery operations after Cyclone Megan damaged the export wharf and flooded mine areas in March 2024, forcing a four-month suspension that disrupted global manganese supply chains and affected key customers including GFG Alliance's Tasmania ferromanganese plant.

Production Recovery Targets Pre-Cyclone Output Levels

South32 Gemco manganese exports began with the loading of 56,606 tonnes aboard the Singapore-flagged Stenia Colossus on May 19th, bound for Tianjin, China according to marine analytics firm Kpler. A second shipment of 54,078 tonnes will depart on the Panamanian-flagged Loch Crinan on May 28th, demonstrating operational momentum recovery. These initial shipments mark the end of a 15-month export hiatus that severely impacted Australian manganese supply to Asian steel markets.

Meanwhile, South32 plans production ramping at Gemco's 6 million tonne annual nameplate capacity facility throughout the 2025-26 financial year. The company achieved 5.9 million tonnes production in 2022-23, the last complete year before Cyclone Megan disrupted operations. Northern Territory government projections indicate 5 million tonnes expected production over the coming year, though South32 has not released official 2025-26 guidance.

Customer Supply Chain Disruptions Highlight Market Dependencies

However, the extended Gemco shutdown created severe supply chain disruptions for downstream customers dependent on Australian manganese ore. GFG Alliance's Liberty Bell Bay ferromanganese plant in Tasmania moved to limited operations on May 19th due to manganese ore supply shortages. This operational reduction demonstrates the critical importance of Gemco's production for regional ferromanganese manufacturing capabilities.

Therefore, the export resumption addresses urgent supply needs across Asia-Pacific steel and ferroalloy markets that experienced significant manganese ore shortages during Gemco's closure. Chinese steel mills particularly depend on Australian manganese imports for steel production, making Gemco's recovery essential for regional supply chain stability. The mine's strategic location in Northern Territory provides efficient shipping access to major Asian industrial centers.

Infrastructure Recovery Enables Full Operational Restart

Furthermore, South32 completed extensive infrastructure repairs including export wharf reconstruction and comprehensive mine dewatering operations during January-March 2025. These recovery investments ensure sustainable long-term operations while improving resilience against future extreme weather events. The company's commitment to full production restoration demonstrates confidence in manganese market fundamentals and customer demand recovery.

As a result, Gemco's operational restart strengthens Australia's position as a critical manganese supplier to global steel industries while reducing supply chain vulnerabilities exposed during the extended shutdown. The successful recovery operations establish operational precedents for managing extreme weather impacts on mining infrastructure. Market participants welcome the supply restoration as global steel production continues recovering from pandemic-related disruptions.

The Metalnomist Commentary

The resumption of South32's Gemco manganese exports illustrates both the vulnerability of critical mineral supply chains to extreme weather events and the interconnected nature of global steel production networks. The 15-month disruption's impact on downstream ferromanganese producers like Liberty Bell Bay demonstrates how single-mine shutdowns can cascade through entire industrial sectors, highlighting the need for greater supply chain diversification and resilience planning in critical minerals markets.

Tasmania Takes Control of Liberty Bell Bay Manganese Stockpile After GFG Default

GFG Alliance

The Liberty Bell Bay manganese stockpile has moved under state control after GFG Alliance defaulted on a government loan. Tasmania appointed receivers and managers to protect ore secured under taxpayer support. As a result, the Liberty Bell Bay manganese stockpile has become the center of a wider industrial dispute.

This development matters because Liberty Bell Bay is Australia’s only ferro-alloy plant. The site is licensed to produce ferromanganese and silicomanganese at meaningful scale. Therefore, the Liberty Bell Bay manganese stockpile now carries national industrial importance, not just local financial significance.

The state originally provided a bridging loan to support a restart of smelter operations. However, the government said GFG failed to restart the plant and did not repay the loan. Consequently, the GFG loan default has forced Tasmania to protect its collateral more directly.

GFG Loan Default Shifts Control to the Tasmanian Government

The GFG loan default marks a breakdown in trust between the company and the state. Tasmanian officials said GFG did not deliver on commitments made to workers and the public. That failure pushed the government to act. Meanwhile, state leaders said they remain open to future cooperation.

The decision also reflects a broader industrial policy concern. Governments can justify temporary support for strategic plants during disruption. However, that support becomes politically difficult when restart promises are missed. Therefore, the GFG loan default now raises harder questions about accountability in state-backed industrial rescue efforts.

Tasmania’s response shows a more defensive posture toward strategic raw materials. By securing control of the ore, the government preserves some leverage over the plant’s future. As a result, the Liberty Bell Bay manganese stockpile may become a bargaining asset in any restructuring or restart plan.

Liberty Bell Bay Restart Still Depends on Ore and Financing

The Tasmania ferro-alloy plant was already under pressure before the loan dispute intensified. Liberty Bell Bay suspended production in May 2025 because of maintenance needs and weak manganese ore supply. Supply issues from Australian and South African sources added further strain. Consequently, manganese ore supply remains one of the plant’s biggest operational risks.

GFG said it is still pursuing options to protect the future of Liberty Bell Bay. The company also said negotiations with Steel International Trading Company are continuing. However, financing alone may not solve the problem. The plant still needs reliable ore, working capital, and operational stability.

That makes the next phase especially important for the manganese market. A restart would support domestic alloy capacity and regional supply confidence. However, another delay would deepen uncertainty around Australia’s only ferro-alloy plant. Therefore, the future of Liberty Bell Bay now depends on execution, not intention.

The Metalnomist Commentary

This is no longer just a loan dispute. It is a test of whether a strategic industrial asset can survive under financial and raw material stress at the same time. If Liberty Bell Bay cannot secure ore and trust together, state intervention may only delay a deeper restructuring.