Are those accident reports publicly available online? The site you linked seems to have a one line summary of each accident but no link to further details.
At least ten years ago, when I went through cave training, incident reports were a significant fraction of the curriculum between Apprentice and Full Cave certifications. If you weren't in the overhead, you were reading about people who didn't make it back and figuring out how to structurally reduce the risk of suffering the same specific misfortune.
For example the Aquacorps archives on archive.org
https://web.archive.org/web/20020611235343/http://www.cisatl...