This class includes:
——production of basic precious metals: production and refining of unwrought or wrought precious metals: gold, silver, platinum, etc. from ore and scrap
——production of precious metal alloys
——production of precious metal semi-products
——production of silver rolled onto base metals
——production of gold rolled onto base metals or silver
——production of platinum and platinum group metals rolled onto gold, silver or base metals
——production of aluminium from alumina
——production of aluminium from electrolytic refining of aluminium waste and scrap
——production of aluminium alloys
——semi-manufacturing of aluminium
——production of lead, zinc and tin from ores
——production of lead, zinc and tin from electrolytic refining of lead, zinc and tin waste and scrap
——production of lead, zinc and tin alloys
——semi-manufacturing of lead, zinc and tin
——production of copper from ores
——production of copper from electrolytic refining of copper waste and scrap
——production of copper alloys
——manufacture of fuse wire or strip
——semi-manufacturing of copper
——production of chrome, manganese, nickel etc. from ores or oxides
——production of chrome, manganese, nickel etc. from electrolytic and aluminothermic refining of chrome, manganese, nickel etc., waste and scrap
——production of alloys of chrome, manganese, nickel etc.
——semi-manufacturing of chrome, manganese, nickel etc.
——production of mattes of nickel
——production of uranium metal from pitchblende or other ores
——smelting and refining of uranium

This class also includes:
——manufacture of wire of these metals by drawing
——production of aluminium oxide (alumina)
——production of aluminium wrapping foil
——manufacture of aluminium (tin) foil laminates made from aluminum (tin) foil as primary component
——manufacture of precious metal foil laminates

This class excludes:
——casting of non-ferrous metals, see 2432
——manufacture of precious metal jewellery, see 3211