uk gross national income esa95 inventory chapter 10 main classifications used 314 table of contents 1 for the production approach 315 2 318 3 classications expenditure 320 4 in transition from gdp to gni 321 below shows that are 1992 standard industrial classification sic92 is s equivalent nace rev with which it fully consistent down digit level industry group sub classes agriculture hunting and related service activities forestry logging fishing operation fish hatcheries farms incidental 5 mining coal lignite extraction peat crude petroleum natural gas oil 11 12 6 metal ores 13 7 other quarrying 14 8 processing preserving meat products 15