yes I had heard that, but as a long time breather of Asbestos dust of the brake lining kind and for the last 30 years of the cement Asbestos roof sheet kind (grinding cutting etc) I have not as yet developed asbestosis or methil y whatsit as these kinds of the product are not harmful, there is so much bull sh*t spread about I just do what I want when I want, always have always will, cannot stand all this elf and safety rubbish, kids need to learn to climb trees and fall off cos then they know it hurts, and will learn from that etc etc, Rick