Mine collapse in eastern Congo leaves 200 dead, authorities say. But rebels dispute the number

A mine collapse at Congo’s key Rubaya coltan site has killed a number of miners. Officials and rebels sharply dispute the extent of the death toll.

Miners digging for world tech material are dying in Congo. Here’s why

A tunnel collapse at a rebel-run coltan mine in eastern Congo is feared to have killed at least 200 people, officials said.