Plurilock Security Inc. — Regulatory Filings 2021

Sep 21, 2021

September 20, 2021

British Columbia Securities Commission Alberta Securities Commission Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission Ontario Securities Commission Financial and Consumer Services Commission (New Brunswick) Nova Scotia Securities Commission Service NL, Financial Services Regulation Division (Newfoundland and Labrador) Justice and Public Safety (Prince Edward Island) Superintendent of Securities, Northwest Territories Registrar of Securities, Department of Justice/Government of Nunavut Superintendent of Securities, Corporate Affairs/Community Services (Yukon)

Re: Mexican Gold Mining Corp. (the “Issuer”)

I, Kenneth Embree, P. Eng. of Knight Piésold Ltd., hereby consent to the public filing of the technical report titled “Preliminary Economic Assessment Technical Report Las Minas Project, Veracruz, Mexico”, with an effective date of September 18, 2021 (the “ Technical Report ”) and to extracts from, or a summary of, the Technical Report in the Issuer’s August 4, 2021 News Release.

I confirm that I have read the News Release that is being filed by the Issuer and that it fairly and accurately represents the information in the sections of the Technical Report for which I am responsible, and I have no reason to believe that there are any misrepresentations in the information contained in the News Release.

(original signed) “Kenneth Embree, P. Eng.”

Kenneth Embree, P. Eng. Knight Piésold Ltd.