The processing tool having significant utilization history may be the same processing tool as {HEAD ~ the processing tool} with {TAIL ~ little or no processing history} where a manufacturing event disrupts the operations thereof 
with
The processing tool having significant utilization history may be the same processing tool as { HEAD ~ the processing tool } with { TAIL ~ little or no processing history } where a manufacturing event disrupts the operations thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH