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