Hello I am currently working on an old fire station. There in an area of the building that hasn’t been touched since what looks like the 1970s, old retro paper and flooring. I have stripped the wallpaper this morning but concerned it might have contained asbestos. I’m not sure anyone has experience with 1970s wool yarn wallpaper (I can’t seem to find any info on it online). As I’ve stripped it I’ve noticed what looks like white powder which I have thought to be adhesive on the wool to make it stick to the paper backing. Does anyone know if this might have contained asbestos?