South32 Ltd. · ASX:S32
South32 — Corporate Update (May 2026)
26 slides from South32's corporate update, May 19, 2026
Slide 1: South32 Worsley Alumina Mine CLC Meeting
SOUTH32 WORSLEY ALUMINA MINE CLC MEETING 19 May 2026
Slide 2: Agenda
AGENDA Item Description Presenter Open meeting and note apologies Welcome: 1 • Cr. Gillian Hansen, Shire of Wandering G Cavanagh • Nick Claydon – Acting EA Manager • Jess Martin – Strategic Engagement 2 Acknowledgement of Country South32 Read and accept previous minutes 3 G Cavanagh Review actions a
Slide 3: Acknowledgment of Country
Acknowledgment of Country I would like to acknowledge the Wilman people of the Noongar nation who are the Traditional Custodians of this land we meet on today. I would also like to pay my respect to all Elders past, present and emerging. 3
Slide 4: Business Update
BUSINESS UPDATE • South 32 Quarterly Report March 2026 Alumina productions has increased by approx. 1% year to date across South 32 portfolio, largely driven by record production in Brazil • Worsley Update • Production remains strong and broadly stable • Q3 production of 886Kt Alumina. 6% decrease
Slide 5: Safety Update – Key Metrics
SAFETY UPDATE – KEY METRICS Boddington CLC Meeting SLIDE 5
Slide 6: South32 Business Update - Safety
SOUTH32 BUSINESS UPDATE - SAFETY Worsley is taking a significant step forward in vehicle interaction controls, with a trial of the Level 9 Vehicle Intervention System (VIS) now underway in five haul trucks at the Boddington Bauxite Mine (BBM). The trial forms part of our broader Mobile Equipment Col
Slide 7: Operational Update
OPERATIONAL UPDATE
Slide 8: Production Mine & Materials
PRODUCTION MINE & MATERIALS Environment • Planning is underway to commence Spring surveys. It is anticipated that 1000ha will be surveyed during this process including buffer areas. Nullaga project • Harvesting has been completed in areas south of Gold Mine Road despite delays caused by fires. • All
Slide 9: Environment Update
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Slide 10: Approvals Update
APPROVALS UPDATE • Worsley is proposing to convert BRDA 5, Cell 7 into a decant pond to increase process water storage capacity • This will ensure there is sufficient storage capacity to contain a series of wet winters (mitigate overflow risks) • The following environmental approvals are required: •
Slide 11: Environment - Dust
ENVIRONMENT - DUST Boddington CLC Meeting SLIDE 11
Slide 12: Environment – Water Abstraction
ENVIRONMENT – WATER ABSTRACTION Boddington CLC Meeting SLIDE 12
Slide 13: Environment – BBM Water Monitoring
ENVIRONMENT – BBM WATER MONITORING • All field and lab data is uploaded into a data management system called EquiS • Power BI is used to generate compliance monitoring dashboards • Triggers and thresholds are built into the system to alert the environment team • Management actions detailed in the WM
Slide 14: Offset 2 (Ex Gibbs) - Update
OFFSET 2 (EX GIBBS)- UPDATE • Seeding of ~125ha undertaken in autumn in 2 weeks using the mega sweeper • Planning for further planting along the creek (June/July) Boddington CLC Meeting SLIDE 14
Slide 15: Offset2 – Feral Management
OFFSET2 – FERAL MANAGEMENT Footnote SLIDE 15
Slide 16: Offset Photos – Habitat; Black Cockatoos
OFFSET PHOTOS – HABITAT; BLACK COCKATOOS Drinking perch Cockatube Temp foraging (canola) Alternate hollow Footnote SLIDE 16
Slide 17: Offset Photos – Habitat; Mammals
OFFSET PHOTOS – HABITAT; MAMMALS Marsupial dens Hollow hogs Bandicoot Bungalows Footnote SLIDE 17
Slide 18: Offset Photos – Ecological Restoration
OFFSET PHOTOS – ECOLOGICAL RESTORATION Leaky Weirs Trial soil management Mega Sweeper Creek Planting Footnote SLIDE 18
Slide 19: Community Update
COMMUNITY UPDATE
Slide 20: Community Update – Social Investment March 2026
COMMUNITY UPDATE – SOCIAL INVESTMENT MARCH 2026 COMMUNITY COOKUP – WINNERS OF THE COLOURING IN COMPETITION HOSTED BY THE DINER CAFÉ & SOUTH32 SUMMER BY THE RIVER Boddington CLC Meeting SLIDE 20
Slide 21: Community Update – Social Investment April 2026
COMMUNITY UPDATE – SOCIAL INVESTMENT APRIL 2026 QUINDANNING PICNIC RACE NATIVE TREE PLANTING PROGRAM ANZAC DAY DAWN SERVICE GRAND OPENING BODDINGTON SPORTS & COMMUNITY CLUB PLAYGROUND Medieval Fayre Boddington CLC Meeting SLIDE 21
Slide 22: Community Update – Social Investment May 2026
COMMUNITY UPDATE – SOCIAL INVESTMENT MAY 2026 BODDINGTON NETBALL CLUB – QUIZ NIGHT FUNDRAISER LOCAL VOICES SURVEY YARNING CIRCLE SLIDE 22 Boddington CLC Meeting
Slide 23: Community Update
COMMUNITY UPDATE Community Grants Program - EXTENDED TO 31 May The South32 Worsley Alumina Community Grants Program is getting a major refresh in 2026 - bigger, better and designed to give local groups more time, more support and more impact. For the past two years, we’ve run two grant rounds annual
Slide 24: Community Update - FY26
COMMUNITY UPDATE - FY26 September/October 2025 November/December 2025 17 complaints / 13 complaints related to BBM: 53 complaints / 42 x complaints related to BBM: o 5 x Dust o 15 x Dust o 21 x Noise o 5 x Noise o 1 x Environment (rubbish blown from mine site onto Ashcroft Road) o 1 x Traffic – Lowe
Slide 25: Next Meeting Dates
NEXT MEETING DATES • Arrangements for next meeting dates for FY27 proposed: o Wednesday, 19 August 2026 – Quindanning o Tuesday, 17 November 2026 – Boddington o Tuesday, 23 February 2027- Boddington o Tuesday, 18 May 2027 – Boddington Boddington CLC Meeting SLIDE 25
Slide 26: South32
SOUTH32