Horizonte Minerals PLC — Audit Report / Information 2021

Apr 1, 2021

SNOWDEN
Horizonte Minerals Plc
Araguaia Nickel Project Technical Report

David John Haughton

I, David John Haughton, Process Engineering Consultant representing Canadian Engineering Associates Ltd of 5 Cudworth Place, Etobicoke, Ontario, M9A3R5, Canada, do hereby certify that:

a) I am a co-author of the technical report titled "Amended NI 43-101 Technical Report Feasibility Study for the Araguaia Nickel Project Federative Republic of Brazil Project Number AU9867", dated 30 November 2018, amended 31 March 2021, with an effective date of 30 November 2018 (the "Technical Report") prepared for Horizonte Minerals Plc (HZM).

b) I graduated with a Bachelor Degree in Science (Metallurgy) from the University of the Aston in Birmingham. I am member of the Institute of Mining and Metallurgy and a Chartered Engineer. I have worked as a metallurgical engineer and consultant to the mining and metallurgical industry, continuously for a total of 45 years since graduation. I have been involved in international metallurgical engineering consulting work for the last 15 years.

c) I have read the definition of "Qualified Person" set out in NI 43-101 ("the Instrument") and certify that by reason of my education, affiliation with a professional association and past relevant work experience, I fulfil the requirements of a "Qualified Person" for the purposes of the Instrument.

d) I am responsible for Sections 17.1 to 17.5 relating to the process plant of the Technical Report.

e) I am independent of the issuer as defined in section 1.5 of the Instrument.

f) I have no prior involvement with the property that is the subject of the Technical Report.

g) I have read the Instrument and Form 43-101F1, and the Technical Report has been prepared in compliance with that instrument and form.

h) As of the effective date of this Technical Report, to the best of my knowledge, information and belief, the Technical Report contains all the scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

Dated at Ringwood, UK, on 31 March 2021

Original signed

David John Haughton

B Sc.(Met), MIMM, C Eng.

Final
November 2018
Page 341 of 342