Here are the pilings that they are driving into the holes on the exterior of our house. They are reaching a depth of 20 feet. Amazing!
Here is a picture of one of the holes on the inside of our house. Yes, they had to put 16 interior piers under our house which they accomplished by jack-hammering through our slab. Concrete dust is everywhere, as you will see in the next picture.
The hearth is black, so that nice white layer is concrete dust.
Here is a picture of my kitchen. The board is covering up one of the holes and the one on the left is the start of another hole they are jack-hammering out. We tried to tape off and cover as much as we could before they got started, but as you see from the fireplace above, we forgot a few places.