HRW said Rolex received no ranking due to its lack of disclosure © PA Images
Jewellery brands failing on ethical supply chains
A new law could increase royalties mining companies are charged for cobalt from 2% to 10% ©Randgold Resources Limited
DRC tax to increase cobalt prices
Tin has replaced lead in electronic solder ©
Solder & soldiers: the rise of tin
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