A washover pipe and mill, which are connected to the drill string, may be moved into {HEAD ~ contact} with {TAIL ~ the object} after the mandrel is unlatched from the drill string for milling through the object 
with
A washover pipe and mill , which are connected to the drill string , may be moved into { HEAD ~ contact } with { TAIL ~ the object } after the mandrel is unlatched from the drill string for milling through the object
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH