South32 Ltd. · ASX:S32

South32 — Corporate Update (August 2024)

23 slides from South32's corporate update, Aug 20, 2024

  1. Slide 1: South32 Worsley Alumina Mine CLC Meeting

    SOUTH32 WORSLEY ALUMINA MINE CLC MEETING 20 August 2024

  2. Slide 2: Agenda

    AGENDA Item Description Presenter 1 Open meeting and note apologies G Cavanagh 2 Acknowledgement of Country G Johnson Read and accept previous minutes 3 G Cavanagh Review actions and responses Worsley Business Update • Boddington Bauxite Mine Update • Worsley Mine Development 5 • Environment Various

  3. 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.

  4. Slide 4: Worsley Business Update: General Update

    WORSLEY BUSINESS UPDATE GENERAL UPDATE Quarterly Report June 2024 •Delivered strong sales in the June 2024 quarter, capturing higher commodity prices and releasing working capital to finish the year. •Alumina production was largely unchanged year-on-year, with improved plant availability at Brazil A

  5. Slide 5: Boddington Bauxite Mine Update

    WORSLEY BUSINESS UPDATE BODDINGTON BAUXITE MINE UPDATE Safety •Good performance with regards to safety. •Wet Weather having minimal impacts on mining – wash out and Dam Capacity management main focus •Safety Training for all levels of staff (Lead Safely Every Day) commenced Production • Total Materi

  6. Slide 6: Quindanning Mine Enabling Infrastructure Project

    WORSLEY BUSINESS UPDATE QUINDANNING MINE ENBALING INFRASTRUCTURE PROJECT The Quindanning Mine Enabling Infrastructure Project is a mine development project to allow mining east of Pinjarra-Williams Road. It delivers a pre-cast concrete arch road crossing over the Pinjarra-Williams Road. •Project com

  7. Slide 7: Worsley Mine Development

    WORSLEY BUSINESS UPDATE WORSLEY MINE DEVELOPMENT Where are we in the process? WE ARE HERE JANUARY 2021 JANUARY 2022 JUNE > AUGUST 2022 Submission of Submission of EPA Address public Condition Secondary Draft ERD (v2) Final Draft ERD Acceptance and comments and Setting and Approvals and Public Review

  8. Slide 8: What's Been Happening?

    WHAT'S BEEN HAPPENING? • Response to Submissions document resubmitted with minor changes 12 March 2024 • Additional offsets, requested by the EPA Board – outside of the States offset calculator • Updated BOP and OIP’s • Updated GHG Management plan, including decreased GHG emissions for the life of t

  9. Slide 9: What's Next?

    WHAT'S NEXT? • Appeals Convenor writes a report and submits to the Minister • Minister progresses application in accordance with recommendations • Commonwealth (DCCEEW) commence assessment utilising EPA Report • Ministers (State and Commonwealth) make decision on application – different processes &

  10. Slide 10: Quindanning Timber Reserve – Bore Establishment

    QUINDANNING TIMBER RESERVE – BORE ESTABLISHMENT • Bore required to monitor perched aquifer (that the species relies upon) • Reg 4 (DBCA) Authorisation: to install the bore • Location of bogged vehicle and subsequent retrieval operations was not at the known location of any Caladenia hopperiana plant

  11. Slide 11: Environment

    WORSLEY BUSINESS UPDATE ENVIRONMENT Marradong Brook • Worsley self reported silt leaving the HV bridge to DWER in June. Immediate actions and feedback from DWER have been completed, including the installation of a silt curtain and an ongoing contract for water and silt removal from the bridge post r

  12. Slide 12: Water Usage (Refinery)

    WATER USAGE (REFINERY) Winter for the South West • Refinery Freshwater and Catchment Lakes During winter the Bureau of Meteorology’s official station At South32 Worsley Alumina’s Refinery, we have a Catchment Lake (RCL) and Freshwater Lake located in Collie recorded 423mm of rainfall to 19th August,

  13. Slide 13: Community

    WORSLEY BUSINESS UPDATE COMMUNITY • Monthly rehabilitation tours continuing • South32 Local Voices – Community survey finalised 712 responses, will provide an update to community in September/October. Community Investment • Community Grants Round 2, 1 August – 31 August. Community Complaints • 17 co

  14. Slide 14: Community Liaison Committee Purpose

    WORSLEY BUSINESS UPDATE Community Liaison Committee Purpose Committee commitment: The Mine CLC is the core ‘community’ representative body for the communities surrounding the mining operation. Members act as a proxy for the broader community of Boddington and surrounding areas. The CLC’s purpose is

  15. Slide 15: What's Silica?

    WHAT’S SILICA? • Silica (silicon dioxide) is naturally occurring and can be crystalline and non-crystalline (amorphous). • There are various forms of crystalline silica with the most common being α-quartz. • α-quartz exists in most types of rock and rock-based products. • Granite (25-40%), Shale (~2

  16. Slide 16: When Does Silica Become Harmful to Health?

    WHEN DOES SILICA BECOME HARMFUL TO HEALTH? • Inhalable dust includes all airborne particles below 0.100mm (<100 micrometres). • The portion of airborne dust that has a diameter below 0.010mm (<10µm) is called respirable dust. • Respirable dust around 2.5µm in diameter, is small enough to penetrate d

  17. Slide 17: Are We Exposed to RCS Dust at BBM and Along the OBC?

    ARE WE EXPOSED TO RCS DUST AT BBM AND ALONG THE OBC? • Yes, but current exposures to RCS dust are very low and are not a health concern. • There are many natural and man-made sources of crystalline silica at BBM and along the OBC of varying concentration: • Rocks, soil, bauxite ore, concrete, sand,

  18. Slide 18: How Do We Calculate Exposure Now and in the Future?

    HOW DO WE CALCULATE EXPOSURE NOW AND IN THE FUTURE? • Worsley’s Senior Occupational Hygienist: • Collects RCS samples from 45 different workgroups (grouped in 9 SEGs) across BBM and the OBC. • Analyses sampling data and compares results to the shift-adjusted Occupational Exposure Limit, to better un

  19. Slide 19: RCS Dust Exposures – June'24 vs. Future 25% Increase

    RCS DUST EXPOSURES – JUNE’24 VS. FUTURE 25% INCREASE 110% 100% 90% 80% 70% 60% 50% OEL 40% Respirable Silica (Now) Respirable Silica (+ 25%) 30% 20% 10% 0%

  20. Slide 20: Next Meeting

    NEXT MEETING Arrangements for next meeting and meeting dates for 2024 proposed: • 19 November 2024 - Boddington

  21. Slide 21: South32

    SOUTH32

  22. Slide 22: Backup Slides

    SOUTH32 BACKUP SLIDES

  23. Slide 23: Water Usage-MS719

    WATER USAGE-MS719 • In the Ministerial Statement we have a condition which allows us to use 500ML on average. Since 2006 we have been recording our abstraction and overtime using a rolling average to keep us accountable for our water usage. YTD our water abstraction average sits at 498.92ML. Average

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