A Michigan man is using the principle of the teeter-totter to balance large blocks, tipping them back and forth, adding a slab of wood with each tip and raising the block by its own weight. He also rotates large blocks by balancing them on a stone and pivoting, thus he can move these massive stones by rotating them a few degrees one end then the other.
Largest block he moved weighed 19,200 lbs. or approx 9 ton.