South32 (S32) Bank of America Global Metals, Mining and Steel Conference 2026 summary

Strategic portfolio transformation and direction

• Portfolio streamlined to focus on high-margin base metals, with significant divestments, new growth assets, and disciplined capital management.

• Exposure to copper, zinc, silver, and aluminum increased, with over 80% of earnings now from base metals and a growing share from the Americas.

• Strong cash flow generation and commodity price tailwinds support investment in copper, zinc, and silver production, maintaining a robust balance sheet.

• Ongoing brownfield expansions, greenfield exploration, and efforts to extend mine lives and add new resources, especially at Cannington, Sierra Gorda, and Hermosa.

• Leadership transition planned, with a focus on operational excellence, further portfolio optimization, and leveraging technical strengths.

Major project updates and growth pipeline

• Hermosa's Taylor project in Arizona targets first production in H2 FY28, with a 33-year mine life and a 52% increase in Ore Reserve to 99Mt.

• Taylor's capital cost increased by $1.1 billion due to inflation, tariffs, and scope changes, but remains high-margin with $650 million annual EBITDA expected.

• Sierra Gorda's fourth grinding line expansion aims for a 20% copper throughput boost, with a joint investment decision expected mid-2026.

• Ambler Metals in Alaska progressing with a $42 million work program for drilling and studies in 2026, supported by permitting momentum.

• Cannington mine's underground reserves increased by 28%, supporting a 7.5-year reserve life and open pit extension at PFS stage.

Market outlook and commodity insights

• Zinc demand expected to rise, with limited recycling and substitution threats, and a global supply deficit requiring multiple Taylor-sized mines annually.

• Aluminum market supported by Chinese production caps and ex-China development, with strong prices expected to persist.

• Copper market supported by resilient demand, supply chain concerns, and long-term growth in renewables and EVs.

• Hillside aluminum smelter remains a key cash generator, with efforts underway to secure a new power contract beyond 2031.

• Manganese prices supported by supply disruptions and higher freight costs, with long-term price set by marginal South African supply.