Originally posted by The n00b A:

From what i see, the amount in the underground is about the same or less than the surface (and just below the surface), but i end up spending a lot more time digging the ground itself that is inside and around the ore deposit.

What you guys do? You mine all the way down or just pass and grab whats easy?

If i am digging ore, it goes more than 30 Meter upward. :)
And you get more Copper then on ground.