RE:zinc I am going to out on a limb and bet TV does better than break even for 2021.
The path forward for Santander might be to get the pipes going next year at 50 percent higher grade than Magistral for minimal investment with further development and planning going towards mining the deeper a smoky with time after is drilled off. Copper down the road at higher prices. Think 6 plus bucks a lb. coming to a movie theater near you soon enough.
Patience young grasshopper the old master said to the studen- time will tell if it will pay off.