UNITED NATIONS FRAMEWORK CLASSIFICATION FOR FOSSIL ENERGY AND MINERAL RESERVES AND RESOURCES

Historical Versions

• United Nations Framework Classification for Fossil Energy and Mineral Resources 2004
  
  
• United Nations International Framework Classification for Reserves/Resources - Solid Fuels and Mineral Commodities 1997
  
  
• High-level mapping of the UNFC for Reserves/Resources – Solid Fuels and Mineral Commodities of 1997 to UNFC-2009