APPENDIX III COMPETENT PERSON’S REPORT IMC GROUP CONSULTING LIMITED Icon Business Centres, Lake View Drive, Sherwood Park, Nottingham NG15 0DT United Kingdom Tel: +44 (0)1623 726166 Fax: +44 (0)1623 729359 Email: [email protected] www.imcgcl.com The Directors Kazakhmys plc 6th Floor Cardinal Place 100 Victoria Street London SW1E 5JL United Kingdom Date 12th May 2011 Dear Sirs, Competent Persons Report of the Mining Assets of Kazakhmys Plc, Kazakhstan and Kyrgyzstan Purpose of Report This report has been prepared by IMC Group Consulting Ltd (“IMC”) for the possible inclusion in a listing document (the “Listing Document”) which may be published by Kazakhmys Plc (the “Company”) in connection with a secondary listing of its ordinary Shares by the Company. IMC was instructed by the Directors of the Company to prepare a Competent Person’s Report (CPR) for the mining assets of the Company. This report, which summarises the findings of IMC’s review, has been prepared in order to satisfy the requirements of a Competent Person’s Report as set out in the Prospectus Directive in conjunction with the recommendations of the CESR, the Listing Rules of the UKLA and with Chapter 18 of the Listing Rules of the Stock Exchange of Hong Kong Limited. IMC has reviewed the practices and estimation methods undertaken by the Company for reporting reserves and resources in accordance with Kazahkstan’s 2006 classification III-1 APPENDIX III COMPETENT PERSON’S REPORT which is largely based on the Former Soviet Union “Classification and Estimation Methods for Reserves and Resources,” last revised in 1981, and submitted as is mandatory to the Committee of Geology at the Ministry of Industry and New Technologies of the Republic of Kazahkstan. This procedure establishes the nature of evidence required to ensure compliance with the Classification. Within this is a “Conditions for Estimation of Reserves and Resources” unique to each deposit. IMC has reviewed the reserves and resources statements of the individual units compiled by the Company and has restated the reserves and resources in compliance with the Prospectus Directive and in accordance with the criteria for internationally recognised reserve and resource categories of the “Australasian Code for Reporting Mineral Resources and Ore Reserves” (2004) published by the Joint Ore Reserves Committee (“JORC”) of the Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and the Minerals Council of Australia (the “JORC Code”). In this report, all reserves and resources estimates, initially prepared by the Company in accordance with the FSU Classification, have been substantiated by evidence obtained from IMC’s site visits and observation and are supported by details of drilling results, analyses and other evidence and takes account of all relevant information supplied by the management of the Company and its subsidiaries (the “Group”). In restating the Company’s mineral inventory IMC has adopted the findings of the Committee for Mineral Reserves International Reporting Standards (CRIRSCO) which has in recent years worked with the Russian Federal Government Agency State Commission on Mineral Reserves to produce the “Guidelines on Alignment of Russian minerals reporting standards and the CRIRSCO Template”, (the “CRIRSCO Guidelines”), published in August 2010. CRIRSCO is a body representing the minerals industry in Canada, Australasia, USA, Europe, South Africa and Chile. In accordance with the Prospectus Directive in conjunction with the recommendations of the CESR, the Listing Rules of the UKLA and Chapter 18 of the Listing Rules of the Stock Exchange of Hong Kong Limited, only Proved and Probable Reserves have been valued. Other assets of the Company, which include resources, have not been included in the valuation. Capability and Independence This report was prepared by IMC, the signatory to this letter. The IMC signing Director is a Fellow of the Institute of Materials, Minerals and Mining; Chartered Engineer; European Engineer (Eur Ing) and has 35 years experience in the coal, base metals and industrial minerals mining industry and 8 years of directing Competent Person’s and Mineral Expert’s Reports. Details of the qualifications and experience of the consultants who carried out the work are in Appendix A to this report. IMC operates as an independent technical consultant providing resource evaluation, mining engineering and mine valuation services to clients. IMC has received, and will receive, professional fees for its preparation of this report which is not dependent upon the report’s findings. However, neither IMC nor any of its directors, staff or sub consultants who contributed to this report has any interest in: Š The Company or Kazakhmys Plc; or III-2 APPENDIX III COMPETENT PERSON’S REPORT Š the mining assets reviewed; or Š the outcome of any possible financing initiative. Drafts of this report were provided to the Company, but only for the purpose of confirming both the accuracy of factual material and the reasonableness of assumptions relied upon in the report. Scope of Work / Materiality / Limitations and Exclusions IMC reviewed the assets in accordance with the scope of work and exclusions and limitations and on the basis of the materiality criteria set out in Appendix B to this report. IMC has independently assessed the mining assets of the Company by reviewing pertinent data, including resources, reserves, manpower requirements, environmental issues and the life-of-mine (“LOM”) plans relating to productivity, production, operating costs, capital expenditures and revenues. All opinions, findings and conclusions expressed in this report are those of IMC and its sub consultants. There have been no indemnities provided to IMC by the Company in the preparation of this CPR. Inherent Mining Risk Open pit and underground mining is carried out in an environment where not all events are predictable. Whilst an effective management team can, firstly, identify the known risks, and secondly, take measures to manage and mitigate these risks, there is still the possibility for unexpected and unpredictable events to occur. It is therefore not totally possible to remove all risks or state with certainty that an event that may have a material impact on the operation of a mine, will not occur. Glossary of Terms Defined and technical terms used in this report are set out in Appendix D. III-3 APPENDIX III COMPETENT PERSON’S REPORT CONTENTS 1 OVERVIEW .............................................................. III-13 1.1 General ................................................................. III-13 1.2 Description of Assets ..................................................... III-14 1.3 Company Ownership Structure ............................................ III-17 1.4 Summary of Geological Characteristics ..................................... III-18 1.4.1 Zhezkazgan Complex ...................................................... III-18 1.4.2 Balkhash ................................................................ III-18 1.4.3 East Region .............................................................. III-18 1.4.4 Karaganda ............................................................... III-18 1.4.5 Bozymchak Kyrgyzstan ..................................................... III-19 1.5 Reserves and Resources .................................................. III-19 1.5.1 Categorisation of Reserves and Resources under JORC ......................... III-19 1.5.2 Reserves and Resources Statement .......................................... III-22 1.6 Mines and Facilities ...................................................... III-28 1.6.1 Historic Production Figures .................................................. III-29 1.7 Management and Manpower ............................................... III-34 1.8 Health and Safety ........................................................ III-35 1.9 Regional Infrastructure ................................................... III-36 1.10 Projects and Prospects ................................................... III-37 1.10.1 Projects ................................................................. III-37 1.10.2 Prospects ................................................................ III-38 1.11 Environmental Issues and Environmental Permitting ......................... III-38 1.11.1 Legislation ............................................................... III-38 1.11.2 Status ................................................................... III-39 1.11.3 Rehabilitation ............................................................. III-40 1.12 Statutory Authorisations and Licensing ..................................... III-41 1.13 Costs ................................................................... III-45 1.13.1 Operating Costs ........................................................... III-45 1.13.2 Capital Costs ............................................................. III-47 1.14 Sales and Marketing ...................................................... III-48 1.15 Valuation of Reserves ..................................................... III-48 1.15.1 Methodology and Assumptions .............................................. III-48 1.15.2 Valuation Results .......................................................... III-49 1.15.3 Sensitivity Analysis ........................................................ III-50 1.16 Conclusions ............................................................. III-51 2 ZHEZKAZGAN COMPLEX ................................................