Asarco knew about the lead zone. Why didn't they go after it? If you had a mine with a billion dollar lead zone, would you sell the entire mine for 15 million dollars?
Drumlummon water concerns - Doesn't look like an easy fix on deflooding the Drumlummon. The DEQ has not even come close to validating that matter. And it looks like a very expensive fix. For instance a residential remedy would cost so much money .... bag it. That doesn't even mention the increased treatment facility that would need to be put in place. The drumlummon is not very high on the list nowadays. The mine will be closed within 3 years and all that will remain is the liability of treating the toxic water.
Who wants to buy a mine that never makes production has high costs per ounce and is liable for water treatment at a closed mine?
The whole mission of the USA board was to grow using cash saved from silver up movement.
When BOD bought the Drumlummon, that wasn't growing .... that was throwing USA money into a flooded mine with no mine life. So I would say that it looks like that BOD mission failed completely.
If the lead zone is not substantial, USA will die out. And you must ask yourself, why didn't Asarco, who found the lead zone, pursue it?