The UNFC is a system that classifies resources like minerals, fossil energy based on three main factors: economic and environmental viability, technical feasibility, and confidence in the geological knowledge. It uses specific categories (E1, E2, E3 for economic and environmental viability; F1, F2, F3 for technical feasibility; and G1, G2, G3, G4 for geological confidence) to help governments, companies, and investors understand the potential and readiness of these resources for development. This system helps in making informed decisions about resource management and investment. ____ 1. 1. E Axis (Economically Viable and Environmentally Acceptable): E1 - High Environmental-Socio-Economic Viability: Resources classified as E1, where the development is economically viable and environmentally acceptable. The projects are typically approved and have a high probability of going into production soon. E2 - Moderate Environmental-Socio-Economic Viability: Resources in the E2 category have a reasonable potential for economic viability and environmental acceptance, but some uncertainties remain. These projects may require further studies, approvals, or additional development efforts before they can become fully viable. E3 - Low Environmental-Socio-Economic Viability: E3 resources have a low economic viability or face significant environmental and socio-economic challenges. These projects may not be feasible with current economic and regulatory conditions. Further exploration, technological advances, or changes in market conditions would be necessary to improve their viability. ____ 2. 2. F Axis (Confidence in Technical Feasibility): F1 - High Technical Feasibility: The project is technically feasible, is well-developed, usually with detailed planning, engineering, and operational processes in place. Typically, such projects are in production or very close to starting production. F2 - Moderate Technical Feasibility: The project has moderate technical feasibility, requires further technical studies, development, or testing that need to be resolved before the project can be fully implemented. These projects are often in advanced stages of planning and development but are not yet ready for production. F3 - Low Technical Feasibility: The project has low technical feasibility under current conditions, due to technological, engineering, or operational challenges. Extensive research, development, are required to determine if the project can become feasible. Such projects are typically in the early stages of exploration and assessment. ____ 3. 3. G Axis (Confidence in Geological Knowledge): G1 - High Confidence: The quantity and quality of the resource are well-defined and confirmed through detailed exploration and analysis. G2 - Moderate Confidence: There is good geological knowledge and reasonably accurate estimates of the resource, but not as precise as G1. Further exploration and analysis are needed to confirm the exact quantity and quality. G3 - Low Confidence: The resource estimates are based on limited geological data and preliminary exploration. There is significant uncertainty, and more extensive exploration is required to improve confidence levels. G4 - Very Low Confidence: The resource is speculative, with very limited data and high uncertainty. It is mostly based on theoretical or indirect evidence, and substantial exploration is necessary to verify the resource's existence and characteristics.