Yep worked in asbestos without knowing it too, Mind you I remember making dens from it when I was a kid I know different grades and so on of it. I also remember my old man saying they used to be covered in it years ago when they used to unload the lorries with the old Asbestos down pipes, But I guess the people that work with it all the time was most at risk like most things I guess. I remember working on SCM chemicals loads people got gassed from acid on there made them really sick used to seem them looking almost green :o I'd take the chances with bad eyes and back :D