Exhibit 15.8

CONSENT OF QUALIFIED PERSON

Re: Annual Report on Form 20-F of ArcelorMittal

I, Michael Spleit, an employee of ArcelorMittal, am a mining engineer with over 15 years' experience in the mineral resource industry and a master's degree in mining engineering from McGill University. I have performed personal inspections of ArcelorMittal Liberia's Mt. Tokadeh, Mt. Gangra, and Mt. Yuelliton deposits on several occasions and most recently in August 2023.

I, Michael Spleit, in connection with ArcelorMittal's Annual Report on Form 20-F for the year ended December 31, 2023 (the "2023 20-F"):

a) certify that I have supervised and validated the preparation of the ArcelorMittal Liberia Phase 2 and Phase 3 mineral reserve estimates;

b) consent to 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 U.S. Securities and Exchange Commission), in connection with the 2023 20-F and the ArcelorMittal Liberia Phase 2 and Phase 3 mineral reserve estimates; and

c) consent to the incorporation by reference of the 2023 20-F into the Registration Statements Nos. 333-147382, 333-153576, 333-162697 and 333-170117 on Form S-8 and Registration Statement No. 333-256031 on Form F-3 (and any amendments or supplements thereto).

I, Michael Spleit, am responsible for authoring, and this consent pertains to, ArcelorMittal Liberia Phase 2 and 3 mineral reserves. The preparation of ArcelorMittal Liberia Phase 2 and 3 mineral reserves is based on information provided by ArcelorMittal Mining Ltd., which includes capital costs, operating costs, and mineral processing assumptions. I have taken responsible measures to confirm information provided by others and take responsibility for the information.

I, Michael Spleit, certify that I have read the 2023 20-F and that it fairly and accurately represents the mineral reserves for ArcelorMittal Liberia’s Mt. Tokadeh, Mt. Gangra, and Mt. Yuelliton deposits.

Dated: 2024-02-19

/s/Michael Spleit

Michael Spleit, ing.| Mining Technical Services Manager

OIQ membership #: 145612

ArcelorMittal Mining UK Ltd

Mining | 6th Floor Berkeley Square House, Berkeley Square

London W1J 6DA, United Kingdom

CONSENT OF QUALIFIED PERSON

Re: Annual Report on Form 20-F of ArcelorMittal

I, Dr. Alistair Bryan Jeffcoate, an employee of ArcelorMittal, in connection with ArcelorMittal’s Annual Report on Form 20-F for the year ended December 31, 2023 (the “2023 20-F”):

a) certify that I have supervised and validated the preparation of the mineral resource estimates for the Mt. Tokadeh, Mt. Gangra and Mt Yuelliton deposits;

b) consent to 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 U.S. Securities and Exchange Commission), in connection with the 2023 20-F and ArcelorMittal Liberia mineral resource estimates for the Mt. Tokadeh, Mt. Gangra and Mt Yuelliton deposits; and

c) consent to the incorporation by reference of the 2023 20-F into the Registration Statements Nos. 333-147382, 333-153576, 333-162697 and 333-170117 on Form S-8 and Registration Statement No. 333-256031 on Form F-3 (and any amendments or supplements thereto).

I am responsible for authoring, and this consent pertains to, ArcelorMittal Liberia mineral resource estimates for the Mt. Tokadeh, Mt. Gangra and Mt Yuelliton deposits. I certify that I have read the 2023 20-F and that it fairly and accurately represents the mineral resources for each property for which I am responsible.

Dated: 14th February 2024

/s/ Alistair Bryan Jeffcoate

Dr. Alistair Bryan Jeffcoate

Manager - Mineral Resources & Exploration, ArcelorMittal Mining Ltd.

MAusIMM (CP), Membership No. 306906

ArcelorMittal Limited             T +44(0)20 7543 1130

7th Floor                F +44 (0)20 7543 1165

Berkeley Square House            www.arcelormittal.com

Berkeley Square                

London W1J 6DA            Registered office details

United Kingdom                 Registred no. 03335595