In reply to Chris Craggs:
One point worth noting is that the illustration on the UKC article isn't the actual carabiner and rope from the incident in the article. It seems to come from one of Black Diamond's regular gear blog posts -
http://www.blackdiamondequipment.com/en-us/journal/climb//qc-lab-dangers-of... (always very interesting, by the way, for those that aren't already aware of them). It's not from an actual incident at all, but the result of a lab test. Black Diamond don't make it entirely clear where the carabiner in the picture came from but in an earlier test of the same issue they were using carabiners that got worn from use as fixed draws at sport crags, I presume the same is true.
I do think it would be worthwhile for UKC to make the origin of the image more clear, it does seem reasonable to assume, unless otherwise stated, that a picture accompanying a news item is of the actual incident in question.