Post History
OP has qualified his question to be specific for mountaineering, and has clarified to mean 'best practice' instead of 'required by law or guild' In mountains many mishaps are close to instant, or ...
Answer
OP has qualified his question to be specific for mountaineering, and has clarified to mean 'best practice' instead of 'required by law or guild' In mountains many mishaps are close to instant, or ...