MR LE ROUX
We took a gas bottle as the principle part of the bomb.  It was a gas bottle that was full of gas.  We then tied cortex around this gas bottle and placed it within the trailer with the same idea that we had with the previous bomb.  We then put loose explosives around this gas bottle in the trailer, we then picked up shrapnel, metal, and placed it on this bomb.  The next morning we would place sand on top of it just to stack it together.