Buff further to your estimation, my back of envelope would go...

Buff

further to your estimation, my back of envelope would go something like this

2.5 specific gravity
1 Oz of Ag = 31.1g (troy Oz)

for the shallow lead spine which has been confirmed with shallow drill from line 1 to line 9 and open in each direction

900m X 150m X 30m @ 50g/t Ag
= approx 10.1MT

for 16.3M Oz Ag only not including Ag equivalent

for the high grade deeper zone, now confirmed to be a possible continuous sheet from northeast zone to western zone open in all directions

400m X 200m X 8m @ 850g/t Ag
= approx 1.6MT

for 43.7M Oz Ag only not including Ag equivalent

how much of this can be proved up in a JORC? who knows but i am pretty confident that it is going to be north of 50M Oz when considering lead, zinc, gold, copper credits

of course DYOR i am no geologist!