US court cancels most of class action against Samarco over deadly dam burst

A US judge has annulled most of a $50 billion (155 billion real) civil lawsuit against iron miner Samarco, and its owners Brazil’s Vale (NYSE:VALE) and BHP Billiton (ASX, NYSE:BHP) (LON:BLT), for a collapsed tailings dam that killed 19 people and polluted...