The ~30 million ounces of silver are proven in the tailings deposit, with the zinc, from the feasibility study.
The ~20 million ounces of silver indicated and ~10 million ounces of silver inferred (from the In-situ and King Silver deposits respectively) looks to be of a reasonable grade relative to the resources of the deposit.
So dare-I-say it is all recoverable at varying degrees of expense, that will still be profitable.
