[Brandon]

i'd say after 3 attempts... the dead player is moved to a random town? he wouldnt be able to res automatically that way or even find his way back ;D

That's fine an all but that's not much of a punishment. The gump is random and sometimes you don't see it for an hour, sometimes more. They can just come back later on and recall back to the mine to continue mining. I'm sure a crafty person could install UO on a second computer, connect to a neighbors wireless network, and then mine to their heart's content.