Cement, Skid Steer and Jumping Tamper

I forgot to mention that when we pile up the tires we fill in the spots that don't match with cement.
Filling inside the tire walls required some crazy concrete mixer setups.  The cement mixer is hooked up to our generator.

We looked at all the dirt we needed to move and decided we had rent a skid steer to fill the dirt.
We had to buy loads and loads of dirt. Skid Steers rock.

After filling the dirt we had to tamp it down to get the air and water (if it rained) out.
We also rented a jumping tamper. It was useful for tamping between the tire and the insulation.