2420Precious Base Metals and Non-Ferrous Base Metals Industry

manufacture of base precious metals, such as the production and refining of wrought or unwrought precious metals, such as gold, silver, and platinum from ore and slag; | manufacture of precious metal alloys; | manufacture of semi-finished precious metals; | manufacture of rolled silver into base metal; | manufacture of rolled gold into base metal or silver; | manufacture of rolled platinum and other similar products into gold, silver, or base metal; | manufacture of aluminum from alumina; | manufacture of aluminum through an electrolytic refining process from aluminum scrap and slag; | manufacture of aluminum alloys; | manufacture of semi-finished aluminum; | manufacture of lead, zinc, and tin from ore; | manufacture of lead, zinc, and tin through an electrolytic refining process from lead, zinc, and tin scrap; | manufacture of lead, zinc, and tin alloys; | manufacture of semi-finished lead, zinc, and tin; | manufacture of copper from ore; | manufacture of copper through an electrolytic refining process from copper waste and scrap; | manufacture of copper alloys; manufacture of fuse wire (electrical); | manufacture of semi-finished copper; | manufacture of chrome, manganese, nickel, etc. from ore or oxidation; | manufacture of chrome, manganese, nickel, etc. through electrolytic and aluminothermic refining processes from scraps and flakes of chrome, manganese, nickel, etc.; | manufacture of alloys of chrome, manganese, nickel, etc.; | manufacture of semi-finished chrome, manganese, nickel, etc.; | manufacture of nickel mattes; | manufacture of nuclear fuel. This subclass also includes | manufacture of metal wire; | manufacture of aluminum oxide (alumina); | manufacture of wrapping paper from aluminum (wrapping foil); | manufacture of aluminum (tin) foil coatings made from aluminum (tin) foil as the main component; | manufacture of precious metal coatings.