Congo’s Flooded Mine Is Latest Threat to World Copper Supply

The status of one of the world’s most important copper mines remains clouded in uncertainty, more than a week after seismic activity caused widespread flooding deep below ground.

Ivanhoe Mines Ltd.’s Kamoa-Kakula complex in the Democratic Republic of Congo is one of the world’s top sources of copper and was on course to become the third-biggest supplier of the key energy-transition metal this year. Yet its current condition is a mystery, with contrasting messages from its biggest shareholders.