South32 Ltd. · ASX:S32
South32 — Corporate Update (May 2025)
22 slides from South32's corporate update, May 2025
Slide 1: Initial Steps in the Restoration of the Offset Property
INITIAL STEPS IN THE RESTORATION OF THE OFFSET PROPERTY May 2025
Slide 2: Background
Background • Worsley Alumina has recently received environmental approvals to expand its mining operations in the Boddington area. • To offset the impact of the clearing of 3,855 ha of native vegetation, Worsley will provide the following offsets: • 4,384 ha of habitat protection and enhancement, an
Slide 3: Gibbs Offset Property
Gibbs Offset Property The Gibbs property spans 518 ha, comprising 300 ha of pasture and 219 ha of parkland trees. Regulatory targets for the restoration of Gibbs will see: • Karrak, Ngoolark, Ngolark (Black Cockatoo spp. use of artificial breeding hollows); • Chuditch (Western Quoll return 10 years)
Slide 4: Gibbs Restoration Challenges
Gibbs Restoration Challenges • Gibbs Property proposes a number of restoration challenges, including • Best methodology for restoring areas of pasture to native vegetation. • Restoration steps to see the: • return of the Kenngoor; • return of the Chuditch, and • return of Karrak, Ngoolark and Ngolak
Slide 5: Restoration Trial
Restoration Trial • Aim: To determine the best agricultural methodology for removing the weed seed load prior to sowing native plant species. • Hypothesis: Soil preparation methodology will have a significant impact on the establishment of native species in areas with existing pasture. 20m x 40m 4 P
Slide 6: Weed cover results by ground preparation
Footnote 100- Weed Cover (%) 20- 0 « Biologic Seed Trip 1 No prep Speed till Mould board No prep Speed till Mould board Ground Fiewcdor Treatment SLIDE 6
Slide 7: Direct Seeding Method
Footnote Wy Biologic @ Seed 2s E a : | le | | | ul: eae ane —— re gt ott re gh oa? Direct Seeding Method
Slide 8: Scalping Trial 2025
5 ha SCALPING TRIAL 2025 Footnote SLIDE 8
Slide 9: Return of Kenngoor in 20 Years
RETURN OF KENNGOOR IN 20 YEARS • Aim: To see the return of the Kenngoor in 20 years. • Hypothesis: A lack of hollows has limited Kenngoor presence in areas of parkland trees. • Trial: To use the Hollow Hog tool to increase the number of hollows in existing parkland trees. • Standard nest boxes versu
Slide 10: Footnote SLIDE 10
Footnote SLIDE 10
Slide 11: 450 mm Cutting Extension
450 MM CUTTING EXTENSION SLIDE 11
Slide 12: Potential Future Installations
POTENTIAL FUTURE INSTALLATIONS SLIDE 12
Slide 13: Return of Chuditch within 10 Years
RETURN OF CHUDITCH WITHIN 10 YEARS • Aim: To see the return of the chuditch within 10 years. • Hypothesis: Lack of denning opportunities resulted in low chuditch numbers across the property. • Trial: Install and monitor Marsupial Dens created by Habitat Innovation. Footnote HABITAT INNOVATION & MANA
Slide 14: Return of Chuditch within 10 Years
RETURN OF CHUDITCH WITHIN 10 YEARS SLIDE 14
Slide 15: Installation of Marsupial Den
Installation of Marsupial Den Footnote SLIDE 15
Slide 16: Camera Trap Monitoring
Camera Trap Monitoring Footnote SLIDE 16
Slide 17: Black Cockatoo use of Artificial Breeding Hollows on Gibbs
Black Cockatoo use of Artificial Breeding Hollows on Gibbs • Aim: To see the use of artificial breeding hollows by the Karrak, Ngoolark, Ngolark on the Gibbs Property. • Hypothesis: Lack of natural hollows has resulted in no breeding on the Gibb Offset Property. • Trial: Install and monitor cockatub
Slide 18: Suitability of Gibbs to House Cockatubes
Suitability of Gibbs to House Cockatubes • As assessment of the property was completed to determine suitability. Key findings were: • Known breeding nearby (1.2 km) of the property; • Roosting locations were identified on the property; • Evidence of foraging present; • Existing old farm dams provide
Slide 19: Footnote SLIDE 19
Footnote SLIDE 19
Slide 20: Feral animal control program on the Gibbs Offset
Feral animal control program on the Gibbs Offset. 90 removed 3 removed 40 removed
Slide 21: Other Works
OTHER WORKS Baseline fauna and flora survey have been completed Ongoing cleanup of old farming infrastructure Installation kangaroo-proof fencing Development of a restoration plan for the property (Biologic Seeds). Control of pasture grasses and creek line infestation of spiny rush. Creek line seedl
Slide 22: South32
SOUTH 32