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