|Disaster Rescue - Australian Emergency Manual (Natural Disaster Organization, 183 p.)|
|CHAPTER TEN - RESCUE FROM HEIGHTS AND DEPTHS|
10.4 Where it is essential to keep the casualty horizontal, the four-point horizontal suspension can be used.
The stretcher is rigged in the same way as for the two-point suspension, except that it is advisable to use four separate ropes - one for each 'D' on the stretcher. A suitable hole must be found or cut in the floor and the stretcher is then lowered as shown in Figure 10:4.
The rescuers on the far side pull the stretcher across until it is located over the centre of the hole. Four rescuers are required, unless the casualty is very light, in which case one rescuer positioned at the head and one at the foot of the stretcher can do the job, each controlling two ropes. If no suitable landing is available for the stretcher below, two rescuers will be required there.