. . . "Areas used for coal, oil and metal processing .\nThis class is covering mainly raw industry and includes the transformation of crude petroleum and coal into usable products (petroleum refining), manufacture of gases as products of petroleum refineries. It also includes the activities of smelting and/or refining ferrous and non-ferrous metals and the manufacture of \"pure\" metal products (such as parts, containers and structures). This class also includes manufacture of weapons and ammunition (NACE 25.4), which is classified as heavy end product industry." . . "Coal, oil and metal processing" . . "Areas used for coal, oil and metal processing .\nThis class is covering mainly raw industry and includes the transformation of crude petroleum and coal into usable products (petroleum refining), manufacture of gases as products of petroleum refineries. It also includes the activities of smelting and/or refining ferrous and non-ferrous metals and the manufacture of \"pure\" metal products (such as parts, containers and structures). This class also includes manufacture of weapons and ammunition (NACE 25.4), which is classified as heavy end product industry." . "Coal, oil and metal processing" . "U223" .