Briefing
The underground schedule results indicate life-of-mine underground mill feed of approximately 21.4 Mt at an average grade of approximately 3.80 g/t Au, corresponding to approximately 2.6 Moz of mined gold, with peak underground ore production rates on the order of 2,000–2,800 t/d by zone. Key points: The underground schedule results indicate life-of-mine underground mill feed of approximately 21.4 Mt at an average grade of approximately 3.80 g/t Au, corresponding to approximately 2.6 Moz of mined gold, with peak unde; The Life of Mine (LOM) production schedule was developed using the Deswik Planning module, and the annualized results are summarized in Figure 16.21. • The LOM open pit schedule is based on a nominal processing rate of 1; At a base gold price assumption of US$2,500/oz, the G Mining Feasibility Study projects a post-tax NPV 5% of approximately US$2.2 billion, with an IRR of about 27%, based on total gold production of around 4.3 Moz over a; Mineable shapes were generated in Datamine MSO and scheduled in Deswik to produce a life-of-mine underground mill feed on the order of 21 Mt at an average grade of roughly 3.8 g/t Au, containing approximately 2.6 Moz of; 1.14.1 Production Schedule Figure 1.7 shows the annual tonnages of material mined from the open pit and underground sections, and the average annual grade of plant feed from each source; Inferred Mineral Resources must not be included in the economic analysis, production schedules, or estimated mine life in publicly disclosed Pre-Feasibility or Feasibility Studies, or in the Life of Mine plans and cash f. This brief is based on the cited source artifact and is intended as a research entry point, not a replacement for the original source or EGM canonical data tables.
Source Notes
The underground schedule results indicate life-of-mine underground mill feed of approximately 21.4 Mt at an average grade of approximately 3.80 g/t Au,...
Extractive summary evidence · source
The Life of Mine (LOM) production schedule was developed using the Deswik Planning module, and the annualized results are summarized in Figure...
Extractive summary evidence 2 · source
At a base gold price assumption of US$2,500/oz, the G Mining Feasibility Study projects a post-tax NPV 5% of approximately US$2.2 billion,...
Extractive summary evidence 3 · source
Mineable shapes were generated in Datamine MSO and scheduled in Deswik to produce a life-of-mine underground mill feed on the order of...
Extractive summary evidence 4 · source
Extracted Document Text
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# TECHNICAL REPORT Source: https://g2goldfields.com/wp-content/uploads/2026/02/M25052-Oko-Gold-Project-Guyana-PEA-Final-1.pdf Published: 2026-01-23T00:00:00+00:00 Fetched: 2026-05-12T12:28:02.319+00:00 Source artifact: a033b391-db07-48d4-8fe7-a12004bbb239 Normalizer input: text ## Content # TECHNICAL REPORT NI 43-101 Technical Report for the Preliminary Economic Assessment (PEA) on the Oko Gold Project in the Co-operative Republic of Guyana, South America Effective Date: December 8, 2025 Report Date: January 23, 2026 Prepared By: Mohsin Hashmi, P.Eng. PMP. William J. Lewis, P.Geo. Richard M. Gowans, P.Eng. Chitrali Sarkar, P.Geo. Christopher Jacobs, CEng., MIMMM, MBA Mike Round, B.Sc. (Hons), M.Sc., MCSM, Sepehr Aryan, M.Sc., P. Eng. FIMMM. Morwenna C. Rogers, M.Sc., MIMMM. Peter Szkilnyk, P.Eng. G2 GOLDFIELDS INC. Suite 1101 - 141 Adelaide Street, West Toronto, Ontario Canada, M5H 3L5 Tel: 1.416.628.5904 501 – 212 King Street West, Toronto, Ontario, Canada M5H 1K5 +1 416 362 5135 | www.micon-international.com G2 Goldfields Inc Table of Contents 1.0 SUMMARY ............................................................................................................... 1 1.1 INTRODUCTION........................................................................................................................... 1 1.2 LOCATION, PROPERTY DESCRIPTION AND OWNERSHIP ........................................................... 1 1.3 INFRASTRUCTURE, CLIMATE AND TOPOGRAPHY ...................................................................... 2 1.4 HISTORY ...................................................................................................................................... 3 1.5 GEOLOGICAL SETTINGS AND MINERALIZATION ........................................................................ 3 1.5.1 Regional Geology ............................................................................................................... 3 1.5.2 Property Geology ............................................................................................................... 4 1.5.3 Geological Structures......................................................................................................... 5 1.5.4 Structural Geology and Mineralization ............................................................................. 6 1.6 DEPOSIT TYPES ........................................................................................................................... 7 1.7 GENERAL EXPLORATION PROGRAMS ......................................................................................... 7 1.7.1 General Discussion ............................................................................................................. 7 1.7.2 Stream Sediment Sampling ............................................................................................... 7 1.7.3 Field Mapping, Channel and Grab Sampling ..................................................................... 8 1.7.4 Soil Sampling ..................................................................................................................... 8 1.7.5 Trenching............................................................................................................................ 9 1.7.6 Drilling ................................................................................................................................ 9 1.8 DRILLING PROGRAMS ................................................................................................................. 9 1.9 MINERAL PROCESSING AND METALLURGICAL TESTING ........................................................... 9 1.10 UPDATED MINERAL RESOURCE ESTIMATE .............................................................................. 10 1.10.1 General Information......................................................................................................... 10 1.10.2 CIM Standards .................................................................................................................. 11 1.10.3 Methodology .................................................................................................................... 11 1.10.4 Mineral Resource Database and Wireframes for the Oko Project. ................................. 12 1.10.5 Compositing and Variography ......................................................................................... 13 1.10.6 Grade Capping and Rock Density .................................................................................... 14 1.10.7 Mineral Resource Estimate .............................................................................................. 16 1.10.8 Mineral Resource Estimate .............................................................................................. 18 1.10.9 Grade Sensitivity Analysis ................................................................................................ 21 1.11 MINING ...................................................................................................................................... 23 1.11.1 Open Pit Mining Summary ............................................................................................... 23 1.11.2 Underground Mining Summary ....................................................................................... 24 1.12 ENVIRONMENTAL ...................................................................................................................... 25 1.13 CAPITAL AND OPERATING COSTS ............................................................................................ 25 1.13.1 Capital Expenditure ......................................................................................................... 25 1.13.2 LOM Operating Costs ....................................................................................................... 26 1.14 ECONOMIC EVALUATION .......................................................................................................... 26 1.14.1 Production Schedule ....................................................................................................... 27 1.14.2 Base Case Evaluation ....................................................................................................... 29 1.14.3 Sensitivity Study............................................................................................................... 30 1.14.4 Conclusion ........................................................................................................................ 32 1.15 CONCLUSIONS .......................................................................................................................... 32 1.15.1 Risks and Opportunities................................................................................................... 32 Oko Gold Project i January 23, 2026 G2 Goldfields Inc 1.16 RECOMMENDATIONS ................................................................................................................ 34 1.16.1 Exploration and Project Budget ...................................................................................... 34 1.16.2 Further Recommendations.............................................................................................. 35 2.0 INTRODUCTION ...................................................................................................... 38 2.1 TERMS OF REFERENCE ............................................................................................................. 38 2.2 DISCUSSIONS, MEETINGS, SITE VISITS AND QUALIFIED PERSONS ........................................ 38 2.3 UNITS AND CURRENCY ............................................................................................................. 41 2.4 SOURCES OF INFORMATION ..................................................................................................... 44 2.5 PREVIOUS TECHNICAL REPORTS ............................................................................................. 45 2.6 FORWARD-LOOKING INFORMATION ........................................................................................ 45 2.7 NON-GAAP MEASURES .............................................................................................................. 46 3.0 RELIANCE ON OTHER EXPERTS ................................................................................. 48 4.0 PROPERTY DESCRIPTION AND LOCATION .................................................................. 49 4.1 LOCATION.................................................................................................................................. 49 4.2 MINERAL TITLE IN GUYANA ....................................................................................................... 49 4.3 LAND TENURE ........................................................................................................................... 53 4.4 LAND ACQUISITION ................................................................................................................... 58 4.5 MICON QP COMMENTS ............................................................................................................. 59 5.0 ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY . 61 5.1 ACCESSIBILITY .......................................................................................................................... 61 5.2 CLIMATE, TOPOGRAPHY AND HYDROLOGY .............................................................................. 62 5.3 LOCAL RESOURCES AND INFRASTRUCTURE ........................................................................... 63 5.4 MICON QP COMMENTS ............................................................................................................. 64 6.0 HISTORY................................................................................................................ 65 6.1 GENERAL MINING HISTORY OF THE AREA ................................................................................ 65 6.2 EXPLORATION HISTORY OF THE AREA ..................................................................................... 65 6.2.1 Golden Star and Cambior Joint Venture (1991-1993) ..................................................... 65 6.2.2 Exploration Brex Inc. (1995-1997).................................................................................... 66 6.2.3 Michael Vierra Small Scale Mining (2011-present) .......................................................... 67 6.2.4 Guyana Precious Metals Inc. (2011-2013)........................................................................ 67 6.2.5 Micon QP Comments........................................................................................................ 67 6.3 HISTORICAL MINING ................................................................................................................. 68 6.4 MINERAL RESOURCE ESTIMATES ............................................................................................. 68 7.0 GEOLOGICAL SETTING AND MINERALIZATION ............................................................ 69 7.1 REGIONAL GEOLOGY ................................................................................................................. 69 7.1.1 Guiana Shield ................................................................................................................... 69 7.1.2 Geology of North Guyana ................................................................................................. 72 7.1.3 Tertiary and Quaternary Sediments ................................................................................ 73 7.2 PROPERTY GEOLOGY ................................................................................................................ 76 7.2.1 Regolith Domains ............................................................................ 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