Safety hardness and lines are of less value than they might seem at first glance. Concrete tower silos are over sixty feet in diameter and can be over 250 feet tall. The amount of slack you would need on the line just to move around would easily exceed the depth at which you could sink, and if you were being sucked into a void while (indavisibly) inside the silo during unload operations the suction force may well just break you right in half. Contract with harness lead lengths on aerial manlift platforms, which are allowed to be no longer than 6 feet in length because a longer uncontrolled fall would very likely result in major injury.
Stranger