Horizonte Minerals PLC — Regulatory Filings 2021

SNOWDEN
Horizonte Minerals Plc
NI 43-101 Technical Report – Vermelho Project, Pará State, Brazil

28.2 Andrew F. Ross

I, Andrew F. Ross, Executive Consultant of Snowden Mining Industry Consultants Pty Ltd, Level 6, 130 Stirling Street, Perth, Western Australia do hereby certify that:

• I am a co-author, and the overall qualified person of the technical report titled “Amended NI 43-101 Technical Report on the Vermelho Project, Pará State, Brazil” dated 31 October 2019, amended 31 March 2021 with an effective date of 31 October 2019 (the “Technical Report”) prepared for Horizonte Minerals Plc.
• I graduated with an Honours Degree in Bachelor of Science in Geology from the University of Adelaide in 1972. In 1985, I graduated with a Master of Science degree in Mining and Exploration Geology from James Cook University of North Queensland. I am a Fellow of the Australasian Institute of Mining and Metallurgy. I have worked as a geologist almost continuously for a total of 47 years since graduation. I have been involved in resource evaluation consulting for 22 years, including resource estimation of nickel laterite deposits for at least five years. 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.
• I visited the Vermelho Nickel-Cobalt Project Property from 9 to 12 December 2003 and on 5 August 2019.
• I am responsible for the preparation of sections 6 to 12 and 14 of the Technical Report and parts of section 1 and 26
• I am independent of the issuer as defined in section 1.5 of the Instrument.
• I have no prior involvement with the property that is the subject of the Technical Report apart from the site visit in 2003 during the drilling program conducted by Vale.
• I have read the Instrument and Form 43-101F1, and the Technical Report has been prepared in compliance with that instrument and form.
• 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 Perth, Western Australia, on 31 March 2021,

Original signed

Andrew F. Ross

BSc (Hons) MSc, FAusIMM

Executive Consultant

Snowden Mining Industry Consultants

Final
31 October 2019
Page 258 of 259