Endeavour Mining PLC — Regulatory Filings 2021

Dec 15, 2021

CERTIFICATE OF QUALIFIED PERSON
Richard Gowans, P.Eng.

As the co-author of this report on behalf of SEMAFO Burkina Faso S.A. (SEMAFO BF), entitled “Mana Property, Burkina Faso, Ni 43-101 Technical Report, Disclosing the Results of the Siou Underground Prefeasibility Study”, effective date 31 December, 2017, I, Richard Gowans do hereby certify that:

1. While carrying out the work described in this report I was employed as the President and Principal Metallurgist by, and carried out this assignment for Micon International Limited, Suite 900, 390 Bay Street Toronto, Ontario, M5H 2Y2. tel. (416) 362-5135 fax (416) 362-5763 e-mail: rgowans@micon-international.com
2. I hold the following academic qualifications:

B.Sc. (Hons) Minerals Engineering, The University of Birmingham, U.K., 1980

1. I am a registered Professional Engineer of Ontario (membership number 90529389); as well, I am a member in good standing of the Canadian Institute of Mining, Metallurgy and Petroleum.
2. I have worked as an extractive metallurgist in the minerals industry for over 35 years. This includes 7 years in operations with Impala Platinum, South Africa; 8 years engineering consulting with LTA Limited, South Africa; 3 Years engineering consulting with SNC Lavalin, Canada and about 20 years consulting with Micon International, my present employer. I have worked with a wide variety of commodities including gold, PGEs, base metals, speciality metals/minerals and industrial minerals. I have worked in a wide range of technical areas as a manager and engineer including mineral processing, hydrometallurgy, pyrometallurgy, logistics and infrastructure design and review, and capital and operating cost estimation.
3. I do, by reason of education, experience and professional registration, fulfill the requirements of a Qualified Person as defined in NI 43-101. My work experience includes the management of technical studies and design of numerous metallurgical testwork programs and metallurgical processing plants.
4. I visited the Mana property on 26-29 July, 2017.
5. I am responsible for the preparation of Sections 1.1, 1.8, 1.12, 1.13, 1.15, 1.16.4, 1.18, 2, 3, 4.2, 5.0, 13, 17, 18, 20, 21.3, 21.4, 24, 25.3, 25.4, 25.6, 25.7, 26.3 and 26.5 of this Technical Report.
6. I am independent of SEMAFO BF, SEMAFO Inc. and related companies according to the definition described in NI 43-101 and the Companion Policy 43-101 CP.
7. I have not worked on or been associated with had no previous involvement with the Property prior to this Technical Report.
8. I have read NI 43-101 and the Sections of this report for which I am responsible have been prepared in compliance with the instrument.
9. As of the date of this certificate, to the best of my knowledge, information and belief, the sections of this Technical Report for which I am responsible contain all scientific and technical information that is required to be disclosed to make this report not misleading.

Effective Date: 31 December, 2017
Signing Date: November 5, 2021

/s/ Richard Gowans
Richard Gowans, B.Sc. (Hons), P.Eng.