We did some tiling this spring on our farm. The tiling machine below is what puts the tile in the ground. This is a 350 horsepower Cummins powered machine with four wheel drive and a 7 foot wheel trencher on the back. It has a 20,000 lb 5/8 cable winch on the front and we used it extensively because of the muddy conditions.
This shows the rear of the machine well. The wheel moves counter clockwise and as it rotates the dirt falls from the wheel getting expelled by the belt to the side of trench.
This video shows smooth running of the tiling machine. The wheel hauls the dirt up the front of the trench dropping it on the belt for expelling out the side. Then the tile boot, the attachment on the back of the wheel, cleans the trench for placement of the tile in the bottom. You can see the black tile being pulled into the tile boot.