{HEAD ~ The method} involves mixing {TAIL ~ the aggregate} with the furfural phenolic novolak resin until tacky, and adding methylene chloride to the tacky mix while continuing to mix 
involves mixing
{ HEAD ~ The method } involves mixing { TAIL ~ the aggregate } with the furfural phenolic novolak resin until tacky , and adding methylene chloride to the tacky mix while continuing to mix
HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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