Rebels, militias and army units have hijacked the trade in mineral ores from eastern Democratic Republic of Congo (DRC), while subjecting the civilian population to massacres, rape, extortion, forced labour and forced recruitment of child soldiers. Congo's ‘conflict minerals' are laundered into the global supply chain…The metals are then used in a wide range of products, including consumer electronic goods…Some of the world's most famous brands are now coming under scrutiny to address their role in this devastating trade…Despite the mounting pressure on companies that use minerals and metals to carry out due diligence, few are actually doing this…This paper argues that the due diligence…consists of:...A conflict minerals policy…Supply chain risk assessments…Remedial action to deal with any problems identified…Independent third party audits of their due diligence measures…Public reporting…