forming a second conductive layer on said exposed walls of {HEAD ~ said conductive material} and {TAIL ~ the exposed surfaces} of said structure 
forming a second conductive layer on said exposed walls of { HEAD ~ said conductive material } and { TAIL ~ the exposed surfaces } of said structure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH