The US-based miner said its South American operations have been producing gem-quality stones.

New Wood Mackenzie report expects a considerable amount of copper supply to be lost from unexpected disruption.

Drill highlights include 21 metres of 1.37 g/t gold.

Fabio Schvartsman was supposed to be the fresh face that would help Vale SA, the world’s biggest iron ore miner, advance after a 2015 dam collapse.

Roskill issued a report analyzing future prospects for the Brazilian company.

Fabio Schvartsman is the highest-profile executive facing criminal charges for Brazil’s worst environmental disaster.

The study projects a preproduction capex of $901 million for the open-pit project.