Moody's praises higher than expected valuation for the sale of the niobium, phosphate businesses and improving prospects for the global diamond market.
Civil suit demands over $2 billion upfront and also targets Brazil's federal, state governments over deadly dam burst at jointly-owned Samarco iron ore mine.
Factory conditions in China unexpectedly worsen for the 14th straight month raising fears that the rally on commodity markets in 2016 was losing steam.