bauxite rom dump. Bauxite Nova Mining. Jul 19, 2014 Overburden, which is in the form of soil laterite, is first excavated by a combination of shovel / excavator and dumper in order to expose orezone. Mainpat is the primary operative mine, which produces approximately 500,000 tpa of Bauxite. Approximately 100,000 150,000 tpa Bauxite is procured on