SRK Consulting (Canada) Inc.
Suite 2200 - 1066 West Hastings Street
Vancouver, BC V6E 3X2
Project Number: 2US043.005
Ontario Securities Commission
Alberta Securities Commission
Autorite des Marches Financiers
British Columbia Securities Commission
United States Securities and Exchange Commission
CONSENT OF QUALIFIED PERSON
I, Cliff Revering, P. Eng., do hereby consent to the public filing by Sierra Metals Inc. (the “Company”) of the technical report titled “Preliminary Economic Assessment, Bolivar Mine, Mexico” dated October 19, 2020, with an effective date of December 31, 2019 (the “Technical Report”).
Dated this 4th day of November 2020.
Cliff Revering, P. Eng.
SRK Principal Consultant (Resource Geology)