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I only being this up because in recent seasons there have been myriad chairlift incidents in PA at various resorts, from non-eventful (e.g. sheave wheels seizing or stripping off a tower) to dangerous (chairs sliding down and/or jumping off the haul rope). I wish the code were more clear in its objectives and requirements, more akin to what's seen in Vermont with license plates for each ski lift in the state.
I worked at a smaller Vermont resort. The lift mechanics and mountain ops manager—all of whom I generally thought to be pretty good at what they did—regularly bitched about the amount of oversight from the Tram Board. It made me feel much better about the Vermont ski areas where I
didn't know the mechanics, for the same reason it makes me feel better about restaurants when one that I know to be operated well (and the kitchen kept clean, with employees observing good food safety practices) gets dinged for something on a health inspection. If the places doing things well are still getting told to do some of the minor stuff better, hopefully it's a sign that your inspections are effective.
Not every state is Vermont, though, with the install chairlift base and that level of economic incentive to make darn sure they operate safely.
On the original subject: that's scary, and I hope those on the chair are able to recover fully, both physically and mentally. I'd think getting on a chairlift again would be really tough to do.