iii) blending a predetermined amount of {TAIL ~ the polymer asphalt master batch} with {HEAD ~ a predetermined amount} of the asphalt cross linking agent blend to form a PMA blend; and 
iii ) blending a predetermined amount of { TAIL ~ the polymer asphalt master batch } with { HEAD ~ a predetermined amount } of the asphalt cross linking agent blend to form a PMA blend ; and
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH