NI 43-101 Technical Report on Resources and Reserves Yauricocha Mine Yauyos Province, Peru
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NI 43-101 Technical Report on Resources and Reserves Yauricocha Mine Yauyos Province, Peru Effective Date: October 31, 2019 Report Date: January 17, 2020 Prepared for Sierra Metals Inc. Report Prepared by SRK Consulting (Canada) Inc. 2US043.004 January 2020 Signed by Qualified Persons: Andre M. Deiss, BSc. (Hons), Pri.Nat.Sci, MSAIMM, SRK Principal Consultant (Resource Geology) Carl Kottmeier, B.A.Sc., P. Eng, MBA, SRK Principal Consultant (Mining) Daniel H. Sepulveda, BSc, SME-RM, SRK Associate Consultant (Metallurgy) Dan Mackie, M.Sc., B.Sc., PGeo, SRK Principal Consultant (Hydrogeologist) Jarek Jakubec, C. Eng. FIMMM, SRK Practice Leader/Principal Consultant (Mining, Geotechnical). NI 43-101 Technical Report on Resources and Reserves Yauricocha Mine Yauyos Province, Peru January 2020 Prepared for Prepared by Sierra Metals Inc. SRK Consulting (Canada) Inc. Av. Pedro de Osma 2200–1066 West Hastings Street No. 450, Barranco, Vancouver, BC V6E 3X2 Lima 04, Peru Canada Tel: +51 1 630 3100 Tel: +1 604 681 4196 Web: www.srk.com Project No: 2US043.004 File Name: Yauricocha_Technical_Report_RR_2US043.004_20200131.docx Copyright © SRK Consulting (Canada) Inc., 2020 SRK Consulting 2US043.004 Sierra Metals Inc. Yauricocha Technical Report R&R Page ii Important Notice This report was prepared as a National Instrument 43-101 Technical Report for Sierra Metals Inc. (“Sierra Metals”) by SRK Consulting (Canada) Inc. (“SRK”). The quality of information, conclusions, and estimates contained herein is consistent with the level of effort involved in SRK’s services, based on: i) information available at the time of preparation, ii) data supplied by outside sources, and iii) the assumptions, conditions, and qualifications set forth in this report. This report is intended for use by Sierra Metals subject to the terms and conditions of its contract with SRK and relevant securities legislation. The contract permits Sierra Metals to file this report as a Technical Report with Canadian securities regulatory authorities pursuant to National Instrument 43-101, Standards of Disclosure for Mineral Projects. Except for the purposes legislated under provincial securities law, any other uses of this report by any third party is at that party’s sole risk. The responsibility for this disclosure remains with Sierra Metals. The user of this document should ensure that this is the most recent Technical Report for the property as it is not valid if a new Technical Report has been issued. Copyright This report is protected by copyright vested in SRK Consulting (Canada) Inc. It may not be reproduced or transmitted in any form or by any means whatsoever to any person without the written permission of the copyright holder, other than in accordance with stock exchange and other regulatory authority requirements. CK/JJ/AMD/DS/DM Yauricocha_Technical_Report_RR_2US043.004_20200131.docx January 2020 SRK Consulting 2US043.004 Sierra Metals Inc. Yauricocha Technical Report R&R Page iii Table of Contents 1 Executive Summary .......................................................................................................... 1 1.1 Property Description and Ownership ............................................................................................ 1 1.2 Geology and Mineralization .......................................................................................................... 1 1.3 Exploration Status ......................................................................................................................... 1 1.4 Mineral Resource Estimate ........................................................................................................... 2 1.5 Mineral Reserve Estimate (effective October 31st, 2019) ............................................................. 5 1.6 Mining Methods ............................................................................................................................. 7 1.6.1 Mining ............................................................................................................................ 7 1.6.2 Geotechnical ....................................................................................................................... 9 1.6.3 Hydrogeology .................................................................................................................... 10 1.7 Recovery Methods ...................................................................................................................... 10 1.8 Project Infrastructure................................................................................................................... 11 1.9 Environmental Studies and Permitting........................................................................................ 12 1.10 Capital and Operating Costs ....................................................................................................... 14 1.11 Economic Analysis ...................................................................................................................... 16 1.12 Conclusions and Recommendations .......................................................................................... 16 1.12.1 Geology and Mineral Resources ....................................................................................... 16 1.12.2 Mineral Processing and Metallurgical Testing .................................................................. 17 1.12.3 Mineral Reserve Estimation and Mining Methods ............................................................ 17 1.12.4 Geotechnical ..................................................................................................................... 18 1.12.5 Recovery Methods ............................................................................................................ 18 1.12.6 Environmental Studies and Permitting .............................................................................. 18 1.13 Capital and Operating Costs ....................................................................................................... 21 2 Introduction and Terms of Reference .............................................................................22 2.1 Terms of Reference and Purpose of the Report ......................................................................... 22 2.2 Qualifications of Consultants (SRK) ........................................................................................... 22 2.3 Details of Inspection.................................................................................................................... 24 2.4 Sources of Information ................................................................................................................ 24 2.5 Qualifications of SRK and SRK Team ........................................................................................ 24 2.6 Effective Date .............................................................................................................................. 24 2.7 Units of Measure ......................................................................................................................... 24 3 Reliance on Other Experts ..............................................................................................25 4 Property Description and Location .................................................................................26 4.1 Property Location ........................................................................................................................ 26 4.2 Mineral Titles ............................................................................................................................... 26 CK/JJ/AMD/DS/DM Yauricocha_Technical_Report_RR_2US043.004_20200131.docx January 2020 SRK Consulting 2US043.004 Sierra Metals Inc. Yauricocha Technical Report R&R Page iv 4.2.1 Nature and Extent of Issuer’s Interest............................................................................... 29 4.3 Royalties, Agreements and Encumbrances ............................................................................... 30 4.3.1 Debt .......................................................................................................................... 30 4.3.2 Royalties and Special Taxes ............................................................................................. 30 4.4 Environmental Considerations .................................................................................................... 31 4.5 Other Significant Factors and Risks ........................................................................................... 32 5 Accessibility, Climate, Local Resources, Infrastructure and Physiography ................33 5.1 Topography, Elevation and Vegetation ...................................................................................... 33 5.2 Accessibility and Transportation to the Property ........................................................................ 33 5.3 Climate and Length of Operating Season .................................................................................. 33 5.4 Sufficiency of Surface Rights ...................................................................................................... 34 5.5 Infrastructure Availability and Sources ....................................................................................... 34 5.5.1 Power .........................................................................................................................