Vale is part of the IO cartel. Vale's share price has suffered the most of the Big3 thanks to Rio and BHP. Brazil's economy (not in good shape) has a lot more to gain financially by selling less ore for more money.
Week 46 Wrap: Copper hits 2mth low as Trump threatens net zero pace; US rally fades; HotCopper’s picks
CUF CuFe sells its Crossroads gold royalty to Northern Star for $4M cash; says better than waiting for mine launch