Description: The "Tube of Toothpaste" is an unpainted, tin tube which contains an ex-plosive filling and takes a separately packed ignition device. The tube is closed by a screwed cap.

The ignition device consists primarily of a brass plug which contains a match composi-tion, a brass tube housing the black powder delay train, and a brass detonator tube filled with mercury fulminate over tetrly. The brass plug is threaded externally to receive a safety cap, and internally at the opposite end to take the delay tube. The detonator is crimped into the delay tube.

Operation: Remove the screw cap from the tube, insert the igniting device, remove the safety cap, and strike the match composition against a rough surface.

Figure 195 – Explosive Toothpaste Tube.