{HEAD ~ The method} 8 wherein said reducing {TAIL ~ agent} is selected from the group consisting of activated carbon, graphite powders, charcoal powders, ash powders, oil, paraffin, tar, pitch, and mixtures thereof 
wherein
{ HEAD ~ The method } 8 wherein said reducing { TAIL ~ agent } is selected from the group consisting of activated carbon , graphite powders , charcoal powders , ash powders , oil , paraffin , tar , pitch , and mixtures thereof
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH