Again, you are making the same mistake that many newbies make. You are clearly under the impression that in old mines gold and silver are in every wall and clearly visible, and all it takes is a few hand tools and voila! Free gold and silver!
That could not be farther from the truth. I could set you loose in an old mine like Excelsior (even if you could get access, which you can't as it is inaccessible) and you would have no idea where the precious metals are and, even if you did, you would have no way to mine it. And, even if you did, it would not be economic to do so in such small quantities.
Your scenario is absolutely impossible.
News 
Market Data 
Discover 
