9 out of 5000 for an activity which lots of people (esp in UK) do no more than 15 days of the year, say for over 20 years, comes to a annualized mortality rate around 2 per 1000. I think that’s a pretty substantial “add” to the typical mortality rate for very healthy people for most ages in the range of 30 to 55 years old.
(Since most ski tourers are very healthy individuals, their expected mortality is substantially lower than general population mortality, and lower than mortality tables inflated for the purpose of conservatively calculating life insurance company “reserves”.)
My experience with skiers I know: It’s not just that I don’t know anyone who died—I don’t know anyone who’s been buried (not even partially buried). Lots of people I know (including myself) have been in small sluffs that where we stayed on the surface.
Nor do I know anyone who’s ever talked about participating in a beacon search of someone else buried.
Crevasses? I do know somebody who fell into one in France. He was directly following his guide (fully certified) at the start of the Haute Route. He was quickly rescued without serious injuries, and completed the HR that week.
My point is similar to Anselme Baud’s: People seem to talk as if beacon searches and partial burials are a normal inevitable part of backcountry ski touring. I do not agree. Yes some people are just very unlucky. But in many cases they’re ignoring one of the “basics” (or often multiple “basics")—typically basic guidelines which they could easily recite if asked.
David is right: Ski mountaineering tourers are typically pretty goal-oriented people. So they’re tempted to bypass basic safety guidelines in order to achieve.
So I think the critical question is:
Given that’s the kind of person I am, how do I have to structure my social connections, and trip environment, and decision-making process, so that I don’t fall into that temptation?
Starting point on answer:
Read the human factors chapter in Bruce Tremper’s book, and take radically seriously what it says, and change any aspect of your ski touring strategy that conflicts with it.
Typically this implies scrapping most of the apparatus of club trip organization, or much of the traditional approach to group ski holidays.
It means seeking out new partners who are committed to the flexible approach and demonstrate good communication and sensitive decision-making.
Ken