Mar 292014
You have one person on the tower and a second person(s) on the ground. The Rohn pulley attaches to a pole (could be a Gin Pole) near the (current) top of the tower.
The person on the ground hoists the next tower section by pulling a rope through the pulley, until the tower section is all the way at the top, and then the person on the tower, fits that section of tower into place.