There were no immediate reports of any injuries or deaths from the latest dam wall collapse at the dormant diamond mine, which was once owned by De Beers.
New report by Fitch Solutions forecasts over 7 million tonnes will be added to global copper production through 2031 as a raft of projects in Chile, Peru and Congo come online.
A court in Burkina Faso last week handed out suspended sentences to two executives after finding them guilty of involuntary manslaughter for the flood disaster.
The collapse of a tailings dam in South Africa earlier this month has put the spotlight on the need for binding global regulations of facilities used to store mining waste.
The initiative, launched in June, is designed to funnel investment toward developing countries with mining projects that adhere to stricter environmental, social and governance standards.