Concentrations of metals in Rio Doce river after catastrophic dam burst "do not significantly differ" from tests by Brazilian Geological Service in 2010.
World's five largest mining companies together have lost an astonishing $570 billion in market value since 2011–the worst period of performance since 1966.
Iran is opening $29 billion of projects to foreign investors once sanctions are lifted – acquiring new mining equipment and technology is a top priority.
If that sounds bad, then you might not want to hear that the most-active iron ore futures in Singapore sank Monday below $40 a tonne for the first time ever.