Rare transition metal essential to capacitors in every smartphone, server, and weapon system; over 60 percent of global supply comes from artisanal mining in conflict-affected eastern DRC.
Tin, tantalum, tungsten, and gold mined in the Democratic Republic of Congo fund armed groups; US and EU law require importers to trace and disclose their supply chains.
full dossier ›A 10 June 2026 investigation says Rubaya coltan, taxed by M23 at $4/kg, is relabelled Rwandan and sold into the world's biggest tech brands