Genswein has been known for many years as an expert in rescue techniques and training strategies and has published extensively on topics such as search strip width, search strategies for multiple burials and avoiding interference with the avalanche transceiver signal due to external influences. In his ÖGSL presentation, he briefly introduces his platform MountainSafety.info and then gives an overview of the current state of affairs and doctrines regarding companion rescue in avalanche burials. The presentation (video at the end of this article) is aimed at an expert audience with sound prior knowledge and is not suitable as a first introduction to the topic. For those who are familiar with the topic, the talk is a recommended review of some of the theoretical basics (signal vs. noise, signal in deep burials, etc), with useful tips and updates for practice.
Comrade rescue in general
We know the curve that represents how quickly the probability of survival of buried victims decreases. Genswein compares the curve for North America and Europe and shows that the probability of survival decreases faster in NA, as proportionally more people die from trauma injuries there. In contrast to Europe, people in NA mainly ski in uncultivated landscapes and there are more avalanche accidents in the forest (because people ski more in the forest, not because the forest is more dangerous there), which often end fatally due to collisions with trees.
In the first 35 minutes of a burial, the chance of survival decreases by around 2% per minute (!). So every little bit that you are faster in the rescue really counts!