A further advantage of said invention is that the plurality of individual containment envelopes minimize {HEAD ~ the escape} of {TAIL ~ radioactive gas} in the event of any physical damage to an assembly of such envelopes 
of
A further advantage of said invention is that the plurality of individual containment envelopes minimize { HEAD ~ the escape } of { TAIL ~ radioactive gas } in the event of any physical damage to an assembly of such envelopes
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH