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 ...

GOMA, Congo (AP) — At least 200 people were killed earlier this week when a landslide collapsed several mines at a major coltan mining site in eastern Congo, rebel authorities said Saturday. The ...