{TAIL ~ A predetermined amount} of the polymer asphalt master batch is blended with a predetermined amount of the asphalt cross linking agent blend to form {HEAD ~ a PMA blend} 
{ TAIL ~ A predetermined amount } of the polymer asphalt master batch is blended with a predetermined amount of the asphalt cross linking agent blend to form { HEAD ~ a PMA blend }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 HEAD