Lode Runner

I know that gaming has been stigmatized as a solitary activity, but in the late 70's and early 80's you had to get out and about and meet some people if you wanted to play everything.  George C. had Lode Runner so he was on the circuit.  Was this another game set in a mine?  With lots of ladders to climb and lots of holes to dig for hapless AI miners to fall in Lode Runner was an action puzzler that had lots of levels and lots of challenge.  And it was a good chance to go see George C.