
70 BHP Annual Report 2023
6.17 Independent Assurance Report to the Management
and Directors of BHP Group Limited (BHP)
What we assured
Ernst & Young (EY) was engaged by BHP to provide limited assurance over certain sustainability data and disclosures in BHP’s
Annual Report and ESG Standards and Databook and online for the year ended 30 June 2023 in accordance with the noted Criteria,
as defined in the following table:
What we assured (Limited Assurance Subject Matter) What we assured it against (Criteria)
BHP’s qualitative disclosures in Section 6 of the Operating and
Financial Review within the BHP Annual Report 2023
– Management’s own publicly disclosed criteria
BHP’s sustainability policies and standards as disclosed in the
ICMM tab in the BHP ESG Standards and Databook 2023 at
bhp.com/sustainability
– International Council on Mining and Metals (ICMM)
Mining Principles and relevant Performance Expectations and
mandatory Position Statements (Subject Matter 1 of the ICMM
Assurance and Validation Procedure 2023 (ICMM Procedure))
BHP’s identification and reporting of its material sustainability
issues, risks and opportunities described within Section 6 of the
BHP Annual Report 2023 and online at bhp.com/sustainability/
approach
– ICMM Procedure Subject Matter 2
– Global Reporting Initiative (GRI) Standards 2021
GRI 3: Material Topics
BHP’s implementation of systems and approaches to manage
its material sustainability risks and opportunities
– ICMM Procedure Subject Matter 3
BHP’s reported performance of its material sustainability issues,
risks and opportunities in Section 6 of the Operating and
Financial Review within the BHP Annual Report 2023 and the
BHP ESG Standards and Databook 2023, referenced above.
– ICMM Procedure Subject Matter 4
– Management’s own publicly disclosed criteria including GRI
Topic Standards and Sustainability Accounting Standards
Board (SASB) Mining and Metals Standard
– World Resource Institute/World Business Council for
Sustainable Development (WRI/WBCSD) Greenhouse Gas
(‘GHG’) Protocol: A Corporate Accounting and Reporting
standard, including the GHG Protocol Scope 2 Guidance
and the Corporate Value Chain (Scope 3) Accounting and
Reporting Standard
– BHP Scopes 1, 2, and 3 GHG Emissions Calculation
Methodology 2023
Water stewardship reporting, at an operated asset level, in
the BHP Annual Report 2023, the BHP ESG Standards and
Databook 2023, referenced above, and supporting disclosures
included online at bhp.com/sustainability/environment/water
– ICMM guidance and minimum disclosure Standards:
Water Reporting: Good practice guide (2nd edition), 2021
In addition, we were engaged by BHP to provide reasonable assurance over the following information in accordance with the noted
Criteria, as defined in the following table:
What we assured (Reasonable Assurance Subject Matter) What we assured it against (Criteria)
Scope 1 and Scope 2 greenhouse gas emissions as reported
in Section 6 of the Operating and Financial Review within the BHP
Annual Report 2023 and the BHP ESG Standards and Databook
2023, referenced above.
– World Resource Institute/World Business Council for
Sustainable Development (WRI/WBCSD) Greenhouse
Gas Protocol
– BHP’s Scopes 1, 2 and 3 GHG Emissions Calculation
Methodology 2023
Our Conclusions
– Limited Assurance
Based on the procedures we have performed and the evidence we have obtained, nothing has come to our attention that
suggests the Limited Assurance Subject Matter has not been prepared, in all material respects, in accordance with the Criteria
defined above.
– Reasonable Assurance
In our opinion, the Reasonable Assurance Subject Matter is prepared, in all material respects, in accordance with the Criteria
defined above.
Key responsibilities
EY’s responsibility and independence
Our responsibility was to express limited and reasonable
assurance conclusions on the noted subject matter as defined
in the ‘what we assured’ column in the tables above (the Limited
Assurance Subject Matter and the Reasonable Assurance
Subject Matter listed above, collectively the ‘Subject Matter’).
We have complied with the independence and relevant
ethical requirements, which are founded on fundamental
principles of integrity, objectivity, professional competence
and due care, confidentiality and professional behaviour.
EY applies Auditing Standard ASQM 1 Quality Management
for Firms that Perform Audits or Reviews of Financial Reports
and Other Financial Information, or Other Assurance or
Related Services Engagements, which requires the firm
to design, implement and operate a system of quality
management including policies or procedures regarding
compliance with ethical requirements, professional standards
and applicable legal and regulatory requirements.
BHP’s responsibility
BHP’s management was responsible for selecting the Criteria
and ensuring the Subject Matter was prepared, in all material
respects, in accordance with that Criteria. This responsibility
includes establishing and maintaining internal controls,
maintaining adequate records and making estimates that are
relevant to the preparation of the subject matter, such that it is
free from material misstatement, whether due to fraud or error.
Our approach to conducting the review
We conducted our assurance procedures in accordance with
the International Auditing and Assurance Standards Board’s
International Standard for Assurance Engagements Other Than
Audits or Reviews of Historical Financial Information (‘ISAE
3000’) and the Standard for Assurance on Greenhouse Gas
Statements (‘ISAE 3410’) and the terms of reference for this
engagement as agreed with BHP on 6 February 2023.
For the limited assurance engagement, these standards require
that we plan and perform our engagement to express a conclusion
on whether anything has come to our attention that causes us
to believe that the Subject Matter is not prepared, in all material
respects, in accordance with the Criteria, and to issue a report.
For the reasonable assurance engagement, these standards
require that we plan and perform our engagement to obtain
reasonable assurance about whether, in all material respects,
the Subject Matter is presented in accordance with the Criteria,
and to issue a report.
The nature, timing and extent of the assurance procedures
selected depend on our judgement, including an assessment of
the risk of material misstatement, whether due to fraud or error.
Description of assurance procedures
performed
The Limited Assurance procedures we performed were based on
our professional judgement and included, but were not limited to:
– Interviewing select corporate and site personnel to
understand the reporting process at group, business, asset,
and site level, including management’s processes to identify
BHP’s material issues
– Reviewing BHP policies and management standards
to determine alignment with the ICMM’s 10 Sustainable
Development principles and position statements
– Checking the BHP Annual Report 2023 to understand how
BHP’s identified material issues, risks and opportunities are
reflected within the qualitative disclosures
– Evaluating whether the information disclosed in the Limited
Assurance Subject Matter is consistent with our understanding
of sustainability management and performance at BHP
– Evaluating the suitability of the Criteria and that the Criteria
have been applied appropriately to the Subject Matter
– Conducting virtual and in-person site procedures at BHP
locations on a sample basis, based on our professional
judgement, to evidence site level data collection and
reporting to Group as well as to identify completeness
of the sustainability performance data and statements
included within the Subject Matter
– Undertaking analytical procedures of the quantitative
disclosures in the Subject Matter
– Reviewing data, information or explanation about the
sustainability performance data and statements included
within the Subject Matter
– Reviewing other information within the BHP Annual Report
2023 for consistency and alignment to other quantitative
and qualitative information within the Subject Matter
– On a sample basis, based on our professional judgement,
re-performing calculations to check accuracy of claims
within the Subject Matter
– On a sample basis, based on our professional judgement,
agreeing qualitative and quantitative statements within the
Subject Matter and underlying data to source information
to assess completeness of claims, including process
conversations, review of invoices, incident reports, meter
calibration records, and meter data.
– Checking the water balance for each operated asset
inclusive of understanding the methodologies used to
consider consistency with the Criteria, and reviewing
meter and calibration records on a sample basis, based
on our professional judgement.
Additional reasonable assurance procedures we performed
were based on professional judgement and included, but
were not limited to:
– For our reasonable assurance of Scope 1 and Scope 2
greenhouse gas emissions, on a sample basis, based
on our professional judgement, agreeing underlying
data to source information to assess completeness
of performance data, which included invoices, meter
calibration records and meter data.
We believe that the evidence obtained is sufficient and
appropriate to provide a basis for our reasonable and limited
assurance conclusions.
Inherent limitations
While we considered the effectiveness of management’s
internal controls when determining the nature and extent of our
procedures, our assurance engagement was not designed to
provide assurance on internal controls. Our procedures did not
include testing controls or performing procedures relating to
checking aggregation or calculation of data within IT systems.
The greenhouse gas (GHG) emission quantification process
is subject to scientific uncertainty, which arises because of
incomplete scientific knowledge about the measurement of
GHGs. Additionally, GHG procedures are subject to estimation
and measurement uncertainty resulting from the measurement
and calculation processes used to quantify GHG emissions
within the bounds of existing scientific knowledge.
Additional inherent limitations – limited
assurance scope
Procedures performed in a limited assurance engagement
vary in nature and timing from, and are less in extent than for
a reasonable assurance engagement. Consequently, the level
of assurance obtained in a limited assurance engagement is
substantially lower than the assurance that would have been
obtained had a reasonable assurance engagement been
performed. Our procedures were designed to obtain a limited
level of assurance on which to base our conclusion and do not
provide all the evidence that would be required to provide a
reasonable level of assurance.
Additional inherent limitations –
reasonable assurance scope
While our procedures performed for our reasonable assurance
engagement are of a higher level of assurance, due to the use
of sampling techniques, it is not a guarantee that it will always
detect material misstatements.
Other matters
We have not performed assurance procedures in respect of
any information relating to prior reporting periods, including
those presented in the Limited and Reasonable Assurance
Subject Matter. Our report does not extend to any disclosures
or assertions made by BHP relating to future performance
plans and/or strategies disclosed in the BHP Annual Report
2023, the BHP ESG Standards and Databook 2023, and
supporting disclosures online.
Use of our assurance report
We disclaim any assumption of responsibility for any
reliance on this assurance report to any persons other than
management and the directors of BHP, or for any purpose
other than that for which it was prepared. Our review included
web-based information that was available via web links as
of the date of this statement. We provide no assurance over
changes to the content of this web-based information after
the date of this assurance report.
Ernst & Young
Melbourne, Australia
22 August 2023
Mathew Nelson
Partner
A member firm of Ernst & Young Global Limited
Liability limited by a scheme approved under Professional Standards Legislation