I remember our teacher in the early 1980s sending someone to the bogs for loo roll if we needed tracing paper.A mate of mine was a chemist specialising in paper manufacturing. He spent maybe 5 years working on toilet paper v tissue. He could bore the pants of you talking about the stuff. Bog paper is designed to dissolve, tissue less so. The stuff we had at school was nuclear proof. If they’d clad the Challenger with it everyone would have survived.
It didn't even fulfil the basic purpose of bog roll, it was seemingly designed to make a mess and cause discomfort.

