Add Yahoo as a preferred source to see more of our stories on Google. Alain Libondo (17) left, and Nsinku Zihindula (25), hammering at solid rock to find cassiterite and coltan at Szibira, South Kivu.

RUBAYA, Congo — Nestled in the green hills of Masisi territory in Congo, the artisanal Rubaya mining site hums with the sound of generators, as hundreds of men labor by hand to extract coltan, a key ...

KIGALI (Reuters) - A joint venture between the Rwandan government and a Mauritius-based company is positioning the central African country to ramp up exploitation of coltan, a mineral that is crucial ...

Global Witness is calling for businesses and governments to better consider the human cost of rare earth minerals, following the horrific mine disaster in the Democratic Republic of Congo recently.