Our Project
12,784 hectares of highly prospective gold and nickel concessions in Sierra Leone's Tonkolili District.
Overview
Project Overview
A world-class concession backed by independent geoscientific data.
Natder Limited holds exclusive mineral rights over a 12,784-hectare (127.84 km²) concession located in the Tonkolili District of Sierra Leone. The project sits within the prolific West African Craton — the same geological setting that hosts some of the continent’s largest gold deposits.
Independent data from the World Bank-funded EITAP airborne geophysical survey confirms exceptional mineral prospectivity across the concession area:
- Gold favorability: 80–95 %
- Nickel favorability: 70–90 %
Concession
Concession Details
Key facts about Natder Limited's flagship mining concession.
| Location | Tonkolili District, Sierra Leone |
| Concession Area | 12,784 ha / 127.84 km² |
| Primary Commodity | Gold |
| Secondary Commodity | Nickel |
| Geological Setting | West African Craton |
| License Type | Exclusive Mineral Rights |
| JOC Status | Applied Q1 2026; Expected Q2 2026 |
| JORC Status | Target Q4 2026 |
| Comparative Scale | Larger than FG Gold — 12,784 vs 12,427 ha |
The Tonkolili District is located in the Northern Province of Sierra Leone and is recognised as one of the country’s most mineral-rich regions. The concession area benefits from existing road infrastructure, proximity to local communities for workforce recruitment, and access to hydroelectric power from the Bumbuna dam.
Geology
Geological Advantages
Why the science supports exceptional mineral prospectivity.
West African Craton Setting
The concession lies within the Archaean-Palaeoproterozoic West African Craton, one of the world’s most prolific gold-bearing geological provinces. This craton hosts major deposits across Guinea, Mali, Burkina Faso, Ghana, and Sierra Leone.
Proven Mineral Belt
Tonkolili District sits along a well-documented greenstone belt corridor with a proven track record of significant gold discoveries. Adjacent concessions have already advanced to production or near-production stages, validating the regional geological model.
Multi-Commodity Potential
Beyond gold, the EITAP data confirms 70–90 % nickel favorability across the concession. Nickel is a critical mineral for the global energy transition, positioning Natder to benefit from strong long-term demand fundamentals in battery metals.
Structural Controls
Airborne geophysical data reveals major structural lineaments, shear zones, and fold hinges within the concession — all recognised as preferential traps for gold mineralisation. These structural controls significantly increase the probability of discovering economic-grade deposits.
Survey Data
EITAP Survey Data
Independent geoscientific evidence underpinning our project thesis.
The Extractive Industries Technical Assistance Project (EITAP) was a World Bank-funded initiative that conducted a comprehensive, country-wide airborne geophysical survey of Sierra Leone. The survey represents one of the most extensive geoscientific datasets ever compiled for the country.
Survey Methodology
- High-resolution airborne magnetic survey
- Radiometric survey for surface geochemistry
- Electromagnetic survey for sub-surface conductors
- Multi-element geochemical analysis
- Mineral favorability modelling using integrated datasets
| Mineral | Favorability |
|---|---|
| Gold | 80–95 % |
| Nickel | 70–90 % |
What This Means
A favorability rating of 80–95 % for gold places the Natder concession in the highest tier of prospectivity nationally. This independent, World Bank-funded dataset provides institutional-grade confidence in the geological potential of the project area — significantly de-risking early exploration investment.
EITAP Survey Summary Report
Downloadable PDF — Coming Soon
Technical
Technical Specifications
Complete project data at a glance.
| Concession Area | 12,784 ha (127.84 km²) |
| Geological Province | West African Craton |
| Tectonic Setting | Archaean-Palaeoproterozoic Greenstone Belt |
| Deposit Type | Orogenic / Shear-hosted Gold |
| Gold Favorability (EITAP) | 80–95 % |
| Nickel Favorability (EITAP) | 70–90 % |
| Target Annual Production | 100,000+ oz Au |
| Estimated Mine Life | 15–20 years |
| Development Approach | Phased: Exploration → Feasibility → Construction → Production |
| Environmental Standards | IFC Performance Standards; Equator Principles |
| Resource Standards | JORC Code (2012 Edition) |
Timeline
Development Timeline
A disciplined, phased approach to value creation.
Phase 1 — Exploration & Resource Definition
2026 · $50M| Quarter | Milestone |
|---|---|
| Q1 2026 | JOC application submitted to NMA |
| Q2 2026 | JOC granted; mobilise geological field teams |
| Q2–Q3 2026 | Systematic drilling programme (RC & diamond core) |
| Q3 2026 | Assay results & geological modelling underway |
| Q4 2026 | JORC-compliant Mineral Resource Estimate published |
Phase 2 — Feasibility & Construction
2027 · $150M| Quarter | Milestone |
|---|---|
| Q1 2027 | Environmental & Social Impact Assessment (ESIA) commenced |
| Q1–Q2 2027 | Definitive Feasibility Study (DFS) completed |
| Q2 2027 | Mining licence application & construction permits |
| Q3–Q4 2027 | Processing plant construction & infrastructure commissioning |
Phase 3 — Production & Expansion
2028+ · Sustained Operations| Quarter | Milestone |
|---|---|
| Q1 2028 | First gold pour — commercial production begins |
| Q2–Q3 2028 | Ramp-up to nameplate capacity (100,000+ oz/year) |
| Q4 2028+ | Sustained production; exploration of nickel & expansion targets |