In this video you will find a 6:1 Drop Loop system utilizing the Micro Traxion and Petzl Mini pulley. This type of rescue should be built upon after you understand all the components of the standard crevasse rescue using the ATC Guide and 2 Prusik's to ascend the rope.
Also, take note that this video does not replace training from a professional guide. This video assumes that you have already went through the proper courses and are just seeking a refresher. We do not take responsibility for any injury that may result from this inherently dangerous activity.
Check out https://glacieradventure.is/courses/ to sign up for various Hard Ice courses.