{TAIL ~ Such system} can provide {HEAD ~ identification}, inventory, and quality control functions and, in one aspect, are useful to insure that desired tubulars, and only desired tubulars, go downhole and that desired apparatus, and only desired apparatus, is used on the rig 
{ TAIL ~ Such system } can provide { HEAD ~ identification } , inventory , and quality control functions and , in one aspect , are useful to insure that desired tubulars , and only desired tubulars , go downhole and that desired apparatus , and only desired apparatus , is used on the rig
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH