I just got back from the Washington state
permaculture convergence which is put on by
Michael "Skeeter" Pilarski. I remember the first time I met him, everybody was asked to introduce themselves and say a bit about who they are. Skeeter said "My name is Michael Pilarski and I am temporarily not soil."
What a cool guy.
Back on topic ... crematorium ... I have zero information, but I'm willing to toss in my opinion anyway. I'm just kinda obnoxious that way.
I feel there is a slight heebie-jeebie factor about dead people. But I think that has everything to do with the great unknown surrounding death and my own spiritual stuff. As for toxicity: I suppose somebody that was a drug addict, or somebody on some really toxic meds ... having their ashes go up into the air could be less than optimal. But I think that I would be 300 times more concerned about what they put on their lawn every year than about incinerating 1000 bodies per year.