The objectives of the Expert Group are to : ( a ) Seek to continue developing the harmonization code of the United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009 ( UNFC-2009 ) with the existing commodity definitions , bearing in mind ECOSOC Decision 2004/233 , which encourages Member States of the United Nations , the United Nations regional commissions and international organizations to consider taking appropriate measures for ensuring worldwide application of the UNFC .