Explanatory notes
… (g) Copper, nickel or cobalt mattes produced by any process of smelting (Section XV). 2.- For the purposes of … not, however, include minerals which have been submitted to processes not normal to the metallurgical industry. 3.- … compounds (for example, tetraethyllead), and consisting essentially of lead, lead compounds and iron oxide. 2.- …Legal note
… (g) Copper, nickel or cobalt mattes produced by any process of smelting (Section XV). 2.- For the purposes of … not, however, include minerals which have been submitted to processes not normal to the metallurgical industry. 3.- … compounds (for example, tetraethyllead), and consisting essentially of lead, lead compounds and iron oxide. 2.- …