Investor Presentaiton
ANNEXURE ā AUSTRALIA MANGANESE MINERAL RESOURCE AND ORE RESERVE UPDATE
III
SOUTH32
As at 30 April 2023
As at 30 June 2022
Material Type(1)
Measured Mineral Resources Indicated Mineral Resources Inferred Mineral Resources
Total Mineral Resources
Mt
% Mn % Yield
Mt
% Mn % Yield
Mt
% Mn % Yield
Mt
% Mn
% Yield
South32
interest
%
60
Total Mineral Resources
Mt
% Mn
% Yield
ROM (2)
Sands (3)
67
44.7
48
35
13
41.0
20.0
47
26
44.2
45
129
13
43.6
47
20.0
138
9.0
43.6
47
19.5
Notes:
(1) Cut-off grade
GEMCO
ROM
Sands
Mineral Resources
>35% Mn washed product
No cut-off grade applied
(2) Mineral Resources are stated as in-situ, manganese grades are stated as per washed ore samples and should be read together with their respective mass recovery expressed as yields
(3) Mineral Resource tonnes and manganese grades are stated as in-situ.
As at 30 April 2023
As at 30 June 2022
Material Type(1)(2)(3)
Proved Ore Reserves
Mt(4)
Probable Ore Reserves
Total Ore Reserves
% Mn % Yield
Mt(4)
% Mn
% Yield
Mt(4)
% Mn
% Yield
Reserve South32
life interest
Years
%
4.7
60
Mt
Total Ore Reserves
% Mn
% Yield
Reserve
life
Years
ROM
Sands
Notes:
(1) Cut-off grade
GEMCO
28
42.9
58
16
7.3
42.2
40.0
53
22
44
7.3
42.6
40.0
56
22
35
5.8
43.0
40.0
59
3.9
19
ROM
Sands
Ore Reserves
ā„40% Mn washed product
No cut-off grade applied
(2) Ore Reserves are stated as delivered to plant, manganese grades are stated as expected product and should be read together with their respective mass yields
(3) Tonnes are stated on a dry basis.
Competent Persons Statement
The information in this report that relates to the Mineral Resource and Ore Reserve estimate for GEMCO represents an estimate as at 30 April 2023, and is based on information compiled by Mr. Joshua Harvey and Mr. Mark
Bryant, Competent Persons who are Members of The Australasian Institute of Mining and Metallurgy. Mr. Harvey is a full-time employee of South32 and completed the Mineral Resource estimate. Mr. Bryant is a full-time
employee of Bryant Mining Pty. Ltd. and was engaged by South32 to provide an Ore Reserve estimate. Both the Competent Persons have sufficient experience relevant to the style of mineralisation and type of deposit under
consideration and to the activity being undertaken to qualify as Competent Persons as defined in the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr Harvey
and Mr. Bryant consent to the inclusion in this report of the matters based on the information in the form and context in which it appears.
SLIDE 39View entire presentation