Carsiogenic particulate inhalation.
I sure wouldn't grind up a pair of gym shoes into small pieces and start inhaling or ingesting them but more power to you if you would.
My opinion is with children is always error on the side of safety.
There are plenty of poorly maintained city owned ball fields that could be improved significantly to benefit all city residents with healthy natural grass with the $1,000,000 dollar rubber carpet PAL wants. I wouldn't think it was a good idea at any site in Detroit or anywhere at this point in time.
Sometimes it seems like Detroit has to jump into every problem that exist with both feet. My advise is stay the hell away from this one, bad news is starting to come in period. I'm done.
http://www.soccerwire.com/news/clubs...y-julie-foudy/