Copper ore analyses reveal deep connections between ancient African civilizations
Copper artifacts revealed new cultural connections among people living in northern South Africa and the Copperbelt region between the 5th and 20th centuries.
Argentina, where interventionist policies have held back the industry, is becoming a more attractive setting for foreign investors, at least in some of its mineral-rich provinces.
The $1.4bn Andina Transfer project turned the underground operation into an open pit mine located 3,500 metres above sea level, which holds 30% of Chile’s copper reserves.
New research by UC Berkeley geochemists shows that copper in soil and seawater acts as a catalyst to turn organic matter into both methyl bromide and methyl chloride, two potent halocarbon compounds that destroy ozone.