This OECD report examines risks prevalent in cobalt and copper sourcing from the Democratic Republic of the Congo, as well as strategies for building more responsible mineral supply chains. The report highlights often-overlooked links in the supply chain, challenging assumptions that industrial and artisanal mining and refining are entirely distinct. It raises concerns about the low level of scrutiny of some risks and calls upon copper and cobalt users to extend due diligence beyond child labour to include corruption and human rights risks associated with security forces.