Ooops. Personally, I have always retired krabs that have been dropped down cliffs by other muppets. They now have band-aids on them to remind me, and they live on backpacks for attaching random items.
The sling you’d think would be ok. People throw ropes down 30m cliffs without seeming to worry much. The carribiners are a judgement call. Depends on the longest drop. If they slid down a slab, what was the maximum impact – was it worse than falling 10m onto rock –
I work in an RnD facility and so asked this question of a metalurgist with lots of initials after his name… He said this type of aliminium wouldnt be affected by the sort of impact a fall even from height over rock…. (short summary of a 40min answer..)
But….. he doesnt climb and as already said my life and piece of mind is worth more than $25
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