We manage impoundment facilities at active, inactive and closed sites around the world to store primarily two types of material—bauxite mine tailings and bauxite residue. Both materials are referred to generically as tailings.
Bauxite mine tailings are mud-like residues that remain after bauxite is washed at the mine site. Bauxite residue, which is a byproduct of the alumina refining process, consists of mud, some residual caustic soda and, in some cases, a coarse sand fraction.
Our strategic long-term goal for bauxite residue addresses our biggest challenge—reduce bauxite residue land storage requirements per metric ton of alumina produced by 15 percent by 2030 from a 2015 baseline. This metric remained steady through 2019, although we expect to see continued improvement with residue filtration technology now fully operational at our Kwinana and Pinjarra refineries in Australia.
Bauxite Residue Land Requirements
Dam Break Drill Boosts Emergency Preparedness
A full-scale dam break drill at our Poços de Caldas location in Brazil helped ensure first responders, residents and our employees are prepared in the unlikely event of a failure from one of the site’s bauxite residue storage areas.
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