
The Aznalcóllar mining disaster in 1998 caused the discharge of six million cubic metres of toxic sludge. (Greenpeace / Daniel Beltrá)

The toxic spill occurred near the Coto Donana national park and impacted almost 5,000 hectares in southern Spain. (Greenpeace / Daniel Beltrá)

A nickel mine in Indonesia. French firm Eramet has faced allegations of wrongdoing at its projects in the country.Shutterstock