Congo’s coltan miners dig for world’s tech amid struggles

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 mineral crucial for producing modern electronics and defense technology — and fiercely sought after worldwide.

Rubaya lies in the heart of eastern Congo, a mineral-rich part of the Central African nation which for decades has been ripped apart by violence…