The rebels also captured Rubaya, a town at the heart of coltan mining. The mineral is strategically important for the energy ...

Coltan is refined into tantalum, which is then used to manufacture smartphones and other electronic devices Kenya has discovered its first deposits of the valuable mineral coltan, the mining ...

Rebels in eastern Democratic Republic of Congo fraudulently exported at least 150 metric tons of coltan to Rwanda last year, leading to the largest contamination of the Great Lakes Region's mineral ...