TECHNICAL REPORT ON THE LUMWANA MINE, NORTH-WESTERN PROVINCE, REPUBLIC OF ZAMBIA BARRICK GOLD CORPORATION Report for NI 43-101 Qualified Persons: David Londono Benjamin Sanfurgo March 27, 2014 Report Control Form Document Title Technical Report on the Lumwana Mine, North-Western Province, Republic of Zambia Company Name & Address Barrick Gold Corporation Brookfield Place, TD Canada Trust Tower Suite 3700, 161 Bay Street, P.O. Box 212 Toronto, Ontario M5J 2S1 Document Reference Status & Final Issue No. Version Issue Date March 27, 2014 TABLE OF CONTENTS PAGE 1 SUMMARY .................................................................................................................. 1-1 Executive Summary ................................................................................................. 1-1 Technical Summary ................................................................................................. 1-5 2 INTRODUCTION ......................................................................................................... 2-1 3 RELIANCE ON EXPERTS .......................................................................................... 3-1 4 PROPERTY DESCRIPTION AND LOCATION ........................................................... 4-1 Ownership ................................................................................................................ 4-1 Mineral Tenure ......................................................................................................... 4-2 Development Agreement ......................................................................................... 4-6 Zambian Taxes ........................................................................................................ 4-8 Royalty Payments .................................................................................................... 4-9 Surface Rights .......................................................................................................... 4-9 Project Layout .......................................................................................................... 4-9 Environmental Liabilities .......................................................................................... 4-9 5 ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY .......................................................................................................... 5-1 Accessibility .............................................................................................................. 5-1 Climate ..................................................................................................................... 5-1 Local Resources ...................................................................................................... 5-4 Infrastructure ............................................................................................................ 5-5 Physiography ........................................................................................................... 5-5 6 HISTORY .................................................................................................................... 6-1 Ownership ................................................................................................................ 6-1 Exploration ............................................................................................................... 6-1 Previous Resource Estimates .................................................................................. 6-4 Past Production ........................................................................................................ 6-5 7 GEOLOGICAL SETTING AND MINERALIZATION .................................................... 7-1 Regional Geology ..................................................................................................... 7-1 Local Geology .......................................................................................................... 7-3 Property Geology ..................................................................................................... 7-5 Mineralization ........................................................................................................... 7-5 8 DEPOSIT TYPES ........................................................................................................ 8-1 9 EXPLORATION ........................................................................................................... 9-1 10 DRILLING ................................................................................................................ 10-1 History .................................................................................................................... 10-1 Sampling Methods ................................................................................................. 10-8 11 SAMPLE PREPARATION, ANALYSES AND SECURITY ...................................... 11-1 Barrick Gold Corporation – Lumwana Mine, Technical Report NI 43-101 – March 27, 2014 Page i Chain of custody .................................................................................................... 11-1 Sample Preparation ............................................................................................... 11-2 Analysis .................................................................................................................. 11-3 QA/QC .................................................................................................................... 11-3 12 DATA VERIFICATION ............................................................................................ 12-1 13 MINERAL PROCESSING AND METALLURGICAL TESTING ............................... 13-1 Introduction ............................................................................................................ 13-1 Copper Recovery ................................................................................................... 13-2 14 MINERAL RESOURCE ESTIMATE ........................................................................ 14-1 Introduction ............................................................................................................ 14-1 Assumptions ........................................................................................................... 14-2 Geological Database .............................................................................................. 14-2 Geological Interpretation and Modelling ................................................................. 14-4 Bulk Density ........................................................................................................... 14-6 Statistical Analysis ................................................................................................. 14-6 Grade Capping ....................................................................................................... 14-8 Variography ............................................................................................................ 14-9 Cut-off Grade ....................................................................................................... 14-11 Grade Interpolation and Validation ....................................................................... 14-12 Mineral Resource Classification ........................................................................... 14-15 Mineral Resource Summary ................................................................................. 14-18 Conclusions .......................................................................................................... 14-18 15 MINERAL RESERVE ESTIMATE ........................................................................... 15-1 16 MINING METHODS ................................................................................................ 16-1 Mining Operations .................................................................................................. 16-1 Life of Mine Plan .................................................................................................... 16-3 Mine Design ........................................................................................................... 16-3 Geotechnical Considerations ................................................................................. 16-4 Ore Control ............................................................................................................. 16-6 Drilling and Blasting ............................................................................................... 16-7 Surface Water ........................................................................................................ 16-7 Mining Dilution ........................................................................................................ 16-8 Cut-off Grade ......................................................................................................... 16-9 17 RECOVERY METHODS ......................................................................................... 17-1 Crushing and Grinding ........................................................................................... 17-1 Froth Flotation ........................................................................................................ 17-1 Concentrate Dewatering and Storage .................................................................... 17-2 Concentrate Thickener ..........................................................................................