To get ill you have to spend a lot of time around it, so you're almost certainly OK. 2000 tonnes is perhaps a conservative estimate - in Warsaw there's probably several times that.
Thanks, and obviously, I hope that's the case, but that's not what some of the UK warning literature implies about its hazardous nature. Am just hoping it was not asbestos dust. But, with my luck...
That is kind of scary. They are supposed to seal it off so the dust stays in one area or, at the least, spray everything with water before removal.
There was a lot of thick polythene covering the building, but the wind was strong and things were falling and coming away, including that powder. There was no one working there when I was under it, so they probably didn't discover the wind damage until the next day.