Microsoft, Renault and Huawei were criticised for poor efforts to protect DRC children from cobalt mining © Amnesty International
Electronics firms failing on ethical cobalt
Ghana harnesses mining procurement to boost growth
BHP to invest $43m in battery minerals
Mining companies generate $16bn in emissions
Rio Tinto pledges to use local suppliers in $70m project
Yancoal's has purchased Rio subsidiary Coal & Allied, which controls NSW's Hunter Valley mines © Mike Curtain/Rio Tinto
Rio Tinto sells coal assets to China in $3.5bn deal
A UN report said gold was the conflict mineral most used to finance armed groups and criminal networks © 123RF
Congo announces conflict-free gold supply chain
Asteroids could be a lucrative source of water and minerals including platinum ©NASA/JPL-Caltech
Space mining - the next frontier
Sourcing 3TG minerals carries risk in and outside the DR Congo ©PA Images
Tech firms risk sourcing tainted minerals
World faces minerals shortages
The dispute over mining rights dates back more than a decade ©PA Images
Temporary reprieve in Grasberg mine row
Biggest diamond mine begins production