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Technical Report Olympias Mine Greece Technical Report Olympias Mine Greece Centered on Latitude E 40° 36' and Longitude N 23° 50' approximately Effective Date: December 31, 2019 Prepared by: Eldorado Gold Corporation 1188 Bentall 5 - 550 Burrard Street Vancouver, BC V6C 2B5 Qualified Persons Company Mr. David Sutherland, P.Eng. Eldorado Gold Corporation Mr. Paul Skayman, FAusIMM. Eldorado Gold Corporation Mr. Colm Keogh, P.Eng. Eldorado Gold Corporation Mr. Sean McKinley, P.Geo. Eldorado Gold Corporation Mr. Ertan Uludag, P.Geo. Eldorado Gold Corporation O LYMPIAS M INE, G REECE T ECHNICAL R EPORT Table of Contents SECTION • 1 SUMMARY ................................................................................................................ 1-1 1.1 Property Description and Location ............................................................... 1-1 1.2 Geology ........................................................................................................ 1-2 1.3 Drilling, Sampling and Verification ................................................................ 1-2 1.4 Metallurgical Testwork .................................................................................. 1-3 1.5 Mineral Resources ........................................................................................ 1-4 1.6 Mineral Reserves and Mining ....................................................................... 1-5 1.7 Processing .................................................................................................... 1-8 1.8 Infrastructure ................................................................................................ 1-9 1.9 Market studies and contracts ..................................................................... 1-10 1.10 Environmental ............................................................................................. 1-10 1.11 Capital and Operating costs ....................................................................... 1-11 1.12 Economics .................................................................................................. 1-12 1.13 Conclusions and recommendations ........................................................... 1-14 SECTION • 2 INTRODUCTION ....................................................................................................... 2-1 SECTION • 3 RELIANCE ON OTHER EXPERTS .......................................................................... 3-1 SECTION • 4 PROPERTY DESCRIPTION AND LOCATION ........................................................ 4-1 4.1 Property Location ......................................................................................... 4-1 4.2 Land Tenure ................................................................................................. 4-2 4.3 Permitting ..................................................................................................... 4-2 4.4 Royalties and Taxes ..................................................................................... 4-3 4.5 Environmental Liabilities ............................................................................... 4-3 4.6 Other ............................................................................................................. 4-3 SECTION • 5 ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY ...................................................................................................... 5-1 5.1 Location and Accessibility ............................................................................ 5-1 5.2 Infrastructure and Local Resources ............................................................. 5-2 5.3 Climate and Physiography ........................................................................... 5-3 5.4 Surface Rights .............................................................................................. 5-3 SECTION • 6 HISTORY ................................................................................................................... 6-1 6.1 Introduction ................................................................................................... 6-1 6.2 Ownership and Work Carried Out ................................................................ 6-1 SECTION • 7 GEOLOGICAL SETTING AND MINERALIZATION ................................................. 7-1 2020 Final Report i O LYMPIAS M INE, G REECE T ECHNICAL R EPORT 7.1 Regional Geology ......................................................................................... 7-1 7.2 Local Geology ............................................................................................... 7-3 SECTION • 8 DEPOSIT TYPES ...................................................................................................... 8-1 8.1 Deposit Geology ........................................................................................... 8-1 8.2 Deposit Model ............................................................................................... 8-4 SECTION • 9 EXPLORATION ......................................................................................................... 9-1 SECTION • 10 DRILLING ................................................................................................................ 10-1 10.1 Introduction ................................................................................................. 10-1 10.2 Core Handling and Sampling Procedures .................................................. 10-2 10.3 Surveys ....................................................................................................... 10-2 10.4 Core Recovery ............................................................................................ 10-2 10.5 Bulk Density Determinations ...................................................................... 10-2 SECTION • 11 SAMPLE PREPARATION, ANALYSES AND SECURITY .................................... 11-1 11.1 Introduction ................................................................................................. 11-1 11.2 Sample Preparation and Assaying ............................................................. 11-1 11.3 QA/QC Program ......................................................................................... 11-1 11.4 Concluding Statement .............................................................................. 11-10 SECTION • 12 DATA VERIFICATION ............................................................................................ 12-1 12.1 Introduction ................................................................................................. 12-1 12.2 Database checks ........................................................................................ 12-1 12.3 Model to Mill Reconciliation ........................................................................ 12-1 12.4 Concluding Statement ................................................................................ 12-2 SECTION • 13 MINERAL PROCESSING AND METALLURGICAL TESTING ............................. 13-1 13.1 Historical Metallurgical Testing ................................................................... 13-1 13.2 SGS Metallurgical Test Report No. 14607-001 – Final, 2015 .................... 13-1 13.3 Conclusions and Recommendations ........................................................ 13-22 SECTION • 14 MINERAL RESOURCE ESTIMATES ..................................................................... 14-1 14.1 Introduction ................................................................................................. 14-1 14.2 Mineralized Domains .................................................................................. 14-1 14.3 Data Analysis .............................................................................................. 14-3 14.4 Block Model ................................................................................................ 14-5 14.5 Grade Estimation ........................................................................................ 14-5 14.6 Block Model Validation ............................................................................... 14-8 14.7 Mineral Resource Classification ............................................................... 14-14 14.8 Mineral Resource Estimate ...................................................................... 14-18 SECTION • 15 MINERAL RESERVE ESTIMATES ........................................................................ 15-1 15.1 Cut-Off Grade ............................................................................................. 15-1 2020 Final Report ii O LYMPIAS M INE, G REECE T ECHNICAL R EPORT 15.2 Mining Shapes ............................................................................................ 15-3 15.3 Dilution and Recovery Factors ................................................................... 15-3 15.4 Reserve Resource Reconciliation .............................................................. 15-4 SECTION • 16 MINING METHODS ................................................................................................. 16-1 16.1 Introduction ................................................................................................. 16-1 16.2 Geotechnical Considerations ..................................................................... 16-2 16.3 Mining Methods .......................................................................................... 16-5 16.4 Backfill .......................................................................................................
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