As proof of its extraordinary success, Khalifa Industrial Zone Abu Dhabi (Kizad) – which already houses the world's largest aluminum smelter at its anchor tenant Emirates Aluminum (EMAL) - has signed up nearly 50 investors to its 51 square kilometer Zone A. The megaproject - Khalifa Port and Kizad - will grow over the next twenty years to become one of the largest industrial zones in the world.