"So, was there shrapnel in the psycho's bomb?"
No. I have a class across the road from where he died. I visited the site less than 48 hours afterwards. No shrapnel damage to the tree about 20 feet away, nor to the aluminum lamp-post about 15 feet away. I posted photos of the site on another thread.
http://www.freerepublic.com/focus/f-news/1495058/posts?page=4408#4408
They did have a couple of cracked windows, which had been replaced, according to the OUPD cop I talked to at the site.
Thanks for the reminder and link to your post. I wonder who Mark got his info from? Do you believe the tree you looked at is the same tree that he mentioned in the post at his blog?
He had the stuff in his backpack. Assuming he was sitting down, the tree and lamp post are off to the sides. The lpost has too small a xsection, but the tree might have been hit at bench level. The building behind the bench and the concrete pad would be where to check, but I doubt there's anything there. The windows were probably taken out with flying bench parts.
There's a white linear mark on the right side(when seated) of the new bench. Is that a blast mark?
Since he made and used a peroxide, maybe he packed it in plastic, so that when he sat down and leaned back the granules crunched and went kabluey. At any rate he looks more like a psychotic kid than a real jihadi.