{TAIL ~ Coagulant addition} in the underwash feed water reduces {HEAD ~ the solids content} reporting to the primary bitumen froth in a primary separation vessel  
{ TAIL ~ Coagulant addition } in the underwash feed water reduces { HEAD ~ the solids content } reporting to the primary bitumen froth in a primary separation vessel
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH