I think your numbers are a little off. They have 500kt of 70g/t...

I think your numbers are a little off. They have 500kt of 70g/t silver ore to process that's already "on the pad" ready to go which is 1.1Moz of silver. On top of that they have 10Moz of silver in a resource graded over 100g/t which is commercially viable at ~22-25 USD per ounce. And another 40Moz around 40g/t which isn't getting mined at current prices. So if you assume they only mine for ~5 years on the "good stuff" the resource is worth about 377M at todays silver price.

Profit will be around 40M over that time if nothing about silver price or AUD changes or operating expenses changes. If silver is $50 USD on the other hand profit over that time is 400M AUD.

These aren't exciting numbers if you think silver is sticking to 25 USD but if you think silver is going to break out soon it is the silver stock to own imo because it is extremely under valued in those circumstances.