At least 200 people were killed in a landslide at coltan mines in eastern Congo, according to rebel authorities

KINSHASA: More than 200 people were killed this week in a collapse at the Rubaya coltan mine in eastern Democratic Republic of Congo, Lubumba Kambere Muyisa, spokesperson for the…

Rubaya mine produces about 15% of the world’s coltan, which is processed into tantalum, used in mobile phones