In the report ‘”This is what we die for”: human rights abuses in the Democratic Republic of the Congo power the global trade in cobalt’, Amnesty International documents hazardous conditions in which artisanal miners, including thousands of children, mine cobalt in the Democratic Republic of the Congo (DRC). It goes on to trace how this cobalt is used to power mobile phones, laptop computers, and other portable electronic devices. Amnesty International wrote to 26 companies found to be within the global supply chain of cobalt mined by artisinal miners in southern DRC. These are their responses.