Dont want to scare anyone but check out ( antimony health effects ) could be part of a reason as to why this has never been developed in recent years.
Week 46 Wrap: Copper hits 2mth low as Trump threatens net zero pace; US rally fades; HotCopper’s picks
AN1 CuFe sells its Crossroads gold royalty to Northern Star for $4M cash; says better than waiting for mine launch