The device further comprises means of filling the enclosure with an explosive gaseous mixture, {HEAD ~ firing means} designed to set off {TAIL ~ the explosion} of the said mixture and a remote communication system 
designed to set off
The device further comprises means of filling the enclosure with an explosive gaseous mixture , { HEAD ~ firing means } designed to set off { TAIL ~ the explosion } of the said mixture and a remote communication system
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH