Cell phone for trigger, 50 gal of Gasoline, some propane tanks.
And NAILS?
The detanator would be attached to the Propane tanks, blow a hole
and the compressed gas goes boom, in the direction of the hole, not really an explosion.
Which should ignite the gas cans BOOM, but neither really a shrapnel producing type of bomb, even with the nails.
Very short range weapon.
Very loud and BIG flash, but not like fertlizer and petrol.
everything points to a Novice.
EXPLODING PROPANE TANK
Gas bomb:
Gerald
Originally published at https://warintel.blogspot.com/2007/06/london-bomber-novice.html on June 30, 2007.