Who knows how to unfreeze the ground?

[CO Hummer]

Originally Posted by ssgharkness020147

What if they used a jack hammer to break through the frost barrier first, in something like a 5x5 area. Could a backhoe get through it after that?

They tried that one. They rented a jack hammer and couldn't get through it. The guys who's doing the work has a big backhoe, but it doesn't have bucket on it that has appropriate teeth for tearing it out. He own the backhoe.