Hi Bobert
I dont know if it helps, but i used to be a licensed asbestos remover. i stopped doing it because i couldnt stand to put that damned mask on for one more day. but, here is a trick we used to use to get an area certified as clear.

1, make sure area is well ventilated.

2, spray area with a really cheap hairspray, and especially spray area to be removed thouroughly, only then, and with a mask, remove affected area, keep spraying area, the fumes will taste like shit, but it will save you having to cordon off, seal off, air locks through vents etc etc.

3, ignore everything i just said and get someone qualified in to remove it. It will save you wondering if something nasty is going to come and get you like i do every now and then.