Up until the '70's, neon tube benders used asbestos sheet for neon patterns. As a kid in my Dad's shop, one of my jobs was to retrieve patterns, sometimes used over and over again, from the shelf and roll them up and put them away when Dad was finished with them. At times, the asbestos dust was all over the place. (During this same period, we were breathing mercury fumes also.) I don't seem to have suffered any ill affects from all this exposure. Others might disagree.
About 5 years ago, during a restaurant remodel, a small amount of asbestos was found in one of the walls wrapping a duct work splice. OSHA was called and the job was shut down immediately for a couple weeks while the abatement team inspected and removed all asbestos. That one piece was all that was found.