Maaden Alcoa Al Zabirah/Al Baitha Bauxite Mine. The Saudi Arabian mining giant Maaden and their joint venture partner Alcoa from the US have revealed plans to build a 4 million tonne per year (tpy) bauxite mine in Al Baitha. The bauxite will be mined at Al Baitha. The project is part of the development of Saudi Arabia's bauxite resources.