Price check for market stall per ingot? Might more profitable to do it over a barrel but I can't be completely screwed at the Stall.
Minimum of 10 boulders; face is 10+ so far... even if it's one deep that's ~ 60+ silver ingots.
Discovered flush/embedded with Iron on 3rd Level.
If no response; I'll start using it up the traditional way in 3 days.