https://finfeed.com/small-caps/mining/mantle-confirms-new-gold-reef-structure/ This articles seems to stat that a decline will be much cheaper than anticipated.
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