R 408.15332 Pruning and trimming.

Rule 5332. (1) If another employee is present, a verbal warning shall be given by the employee aloft before dropping a limb. (2) A separate work rope, controlled by an employee on the ground, shall be used to lower limbs which cannot be dropped. The work rope shall not use the same crotch over which the climbing rope is run. (3) A cut branch or limb shall not be left aloft overnight or for an extended period unless the limb is secured to the tree or the area under the tree is roped off or barricaded. (4) Whenever an employee is aloft in excess of 15 feet (4.572 M), a second employee or supervisor shall be within vocal hearing distance of the treed employee.