Steps from an RMI guide. I’ve practiced a his in my backyard using a Halloween decorative skeleton and one of my sons larger stuffed animals. It’s not perfect but helps keep the practice up.
Steps…
Catch fall
Commuicate to see if middle person has the weight of the fallen climber
release all weight to middle person
Put a friction hitch (auto block) on rope leading to middle person and walk toward them with ice axe
get to middle person, build anchor
transfer load off of middle person by attaching friction hitch to loaded stranded and clipping it to the master point of anchor (locking carabiner)
back up friction hitch with a clove hitch on the shelf (can be non-locking carabiner)
tell middle person to slowly release all the weight onto the anchor, untie their knot
milk the clove to get all the slack out between it and the friction hitch
*you are now at baseline*
Next go check on the fallen climber
Attach a friction hitch to the unloaded strand of rope and slowly approach the lip of the crevasse with your ice axe in hand
communicate with your fallen climber (are they ok, injured, is their an overhang)
pad the lip with your ice axe, work the lip so the rope isn’t cut into the snow
Put a friction hitch on the loaded strand
clip the unloaded strand to the friction hitch with a non-locker, behind your personal friction hitch so you can re-ascend the fixed line
*you have created a 2:1 pulley*
make the current configuration a 3:1 by undoing one of the lobes of the clove hitch, keep a hand on the unloaded strand as you do this
*now you have a 3:1*
Begin to haul your fallen climber out
Have someone tend to the friction hitch near the master point so it doesnt get sucked through the master point
to re-set the 3:1 move the lower friction hitch towards the lip of the crevasse
**Remember to communicate with your fallen climber when they are near the lip. You can pull them into the lip of the crevasse and kill them. DO NOT BREAK YOUR FALLEN CLIMBERS NECK by hauling them into the side of the crevasse**
Gear:
2 locking carabiner (this is at the master point, one is on you for your personal friction hitch)
4 non-locking carabiners (2 are on the anchor, one for the lower friction hitch, one for the clove)
3 prusik cords (2 for friction hitches in the pulley system, 1 your person friction hitch, 6mm cord 2 at 6′ each and one at 12′)
1 anchor cord (7mm 15-25′)
2 pickets