The more closely it is confined the greater is the pressure set up by a small part of the charge burning, and the more completely will the explosion of the remainder assume the detonating form.
Bob then took over to film the writer charging the holes with detonating cord.
This blast will be three electronic detonators each feeding ten detonating chord runs, don't want to get too complicated with the wiring!
Engineers were given the task of tunneling underneath the enemy trench, with the intention of then detonating mines directly underneath the front line.