DIGGER is correct. Silver is in public places but it may be extreamly difficult to reach.
I knock on doors expecting to get denied. I say thank you and have s wonderful day. On to the next house. If your looking for silver they are in people's yards!
I don't always hunt permissions cause I enjoy a good cigar while I hunt, so I don't want to offend them on their lawn with a big stogie hanging out my mouth.
But you see these guys posting loads of silver daily?? They been door knocking!
I did door to door sales in college so speaking to people comes naturally and I got rejected a lot selling, but kept knocking till I got a yes!