Brian Gaff wrote
ARWadsworth wrote

I was supposed to be there (AFAIK they are keeping the dates and times of
when they drop them a secret) to stop the public gathering around but I
do have the dates and times of when they are dropping them.

http://www.youtube.com/watch?v=4vmRuPt_pY8

Why would they wan it to be secret?

He already said why.

are they expecting a riot?

Nope, just a lot more people and don’t want to bother
keeping them organised out of where they can get injured.

I'd suggest though that the dust generated by these to be quite a hazard
if people breathed it in for too long and you cannot give everyone a mask.