UNKNOWN
Chairperson for me at that stage a pipe bomb is a pipe that is a bomb and when I saw the things physically in front of me, there were long ones, there were short ones, thick, thin ones, they had different shapes.  What I could determine from what I saw in front of me, it is a normal piece of metal like a water pipe which they welded together at the bottom and then they threw explosives inside of it and at the top it is covered up and it was nutted, there was a bit of metal there and the fuse stuck out of that and that is where you ignite it and then you throw it.  That is all I know about these things Chairperson.