how much do you value your life and the ones that love you.
I would rent or buy a OSHA approved ventilator mask and a hood and as you cut have someone with a water hose on mist wet down the area as you cut. Wet the air and surface below where working.
you are doing something that you need to take heed and warnings. you are doing a very serious life threatening job. Not only you, but the asb becomes airborne and this is the lethal part.
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