More Than 200 Killed in Coltan Mine Collapse in East Congo, Official Says Over 200 people have died in a collapse at the Rubaya coltan mine in the Democratic Republic of Congo. This mine is a significant global source of coltan, essential for electronics and aerospace. The mine has been under the control of the AFC/M23 rebel group since 2024, with locals working there manually.

• Over 200 people killed in a coltan mine collapse in eastern Democratic Republic of Congo.
• The Rubaya mine produces approximately 15% of the world’s coltan.
• Coltan is processed into tantalum, a metal used in electronics, aerospace, and turbines.
• The mine is controlled by the AFC/M23 rebel group.
• Locals work at the mine manually for low wages.