Pole-top rescue setup 2 : top lowered .
If for any reason an individual rescue must be conducted , it is possible for the rescuer to achieve using only the equipment previously discussed .
A The rescuer chokes their climbing line as high as possible onto the trunk using a running bowline . The bowline should be set so that it ‘ cinches ’ when the tail is pulled toward the
casualty .
B The rescuer attaches their descender ( CT Sparrow or similar ) with a karabiner to an in-line knot as tight as possible below the running bowline . The tail of the line is fed through a pulley
connected to the casualty and then installed into the descender .
An MRT system has been created , allowing the rescuer to lower the casualty on a bight of rope controlled by their descender from the top anchor .
The rope must be twice as long as the original casualty height for the casualty to reach the ground .
NOTE : an alternative to the setup above is for the rescuer to pull up the tail of the green line and set it through the descender . The casualty is then lowered on the tail rather than on a bight of rope . This alternative loses the mechanical advantage of the MRT method above , but gains additional rope length if the casualty is at height .
C A static belay line with an auto self-belay is installed and connected .
This technique is less preferred , as the rescuer is left with only their two lanyards until the casualty reaches the ground . Nevertheless , this approach may be useful where ground-based lowering is not available .
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