Gives you and idea of how big a shell like that is. I find it amazing no one was hurt other then the teacher. Hum, does he get disability now? I have seen 1st hand (no pun intended) shit like this going off and man those kids ears must have been ringing for hours. Think of it like this, a 50 cal round will blow a hole right through a truck engine like it was butter from 1 mile away and I have one on my desk
(yes its live but I don't let anyone play with it). Its only about 4 inchs long. This thing is like 20 times the size.
http://www.archives.gov/research/afr...s-wwii-253.jpg