Exhibit 15.4

CONSENT OF QUALIFIED PERSON

I, Balázs Németh, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Balázs Németh

Name:

 

Balázs Németh, MAusIMM

Title:

 

Principal Geophysicist

 

Jansen

 

BHP


CONSENT OF QUALIFIED PERSON

I, Johannes Sondergaard, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Johannes Sondergaard

Name:

 

Johannes Sondergaard, MAusIMM

Title:

 

Manager Resource Engineering & Long Term Planning

  Jansen
 

BHP


CONSENT OF QUALIFIED PERSON

I, Cameron McKinnon, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Cameron McKinnon

Name:

 

Cameron McKinnon, P.Eng (APEGS)

Title:

 

Principal Engineer Process

 

Jansen

 

BHP


CONSENT OF QUALIFIED PERSON

I, Jairo Gomez, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Jairo Gomez

Name:

 

Jairo Gomez, P.Eng (APEGS)

Title:

 

Principal Geotechnical Engineer

 

Jansen

 

BHP


CONSENT OF QUALIFIED PERSON

I, Graham Reynolds, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Graham Reynolds

Name:

 

Graham Reynolds, MAusIMM

Title:

 

General Manager Operations

 

Jansen

 

BHP


CONSENT OF QUALIFIED PERSON

I, Melanie Failler, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Melanie Failler

Name:

 

Melanie Failler, P.Biol (ASPB)

Title:

 

Principal Environment

 

Jansen

 

BHP


CONSENT OF QUALIFIED PERSON

I, Jessica Perras, in connection with the annual report on Form 20-F for the year ended June 30, 2025 and any amendments or supplements and/or exhibits thereto (collectively, the “Form 20-F”), consent to:

 

 

the filing and use of the technical report summary titled “Technical Report Summary – Jansen Potash Project” (the “Technical Report Summary”), with an effective date of June 30, 2024, as an exhibit to and referenced in the Form 20-F;

 

 

the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 20-F and the Technical Report Summary;

 

 

any extracts from, or summaries of, the Technical Report Summary in the Form 20-F and the use of information derived, summarized, quoted or referenced from the Technical Report Summary, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 20-F; and

 

 

the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-227431, 333-100496, 333-141531 and 333-160636) and Registration Statement on Form F-3 (No. 333-269898) of the above items as included in the Form 20-F.

I am responsible for authoring, and this consent pertains to, the particular section[s] identified in the Technical Report Summary as having been prepared by me and the corresponding section[s] of the Executive Summary.

 

Date: August 15, 2025

/s/ Jessica Perras

Name:

 

Jessica Perras, P.Geo (APEGS)

Title:

 

Principal Tailings and Closure Planner

 

Jansen

 

BHP