The string engaging assembly relatches the mandrel to the drill string when {HEAD ~ the drill string} is moved away from {TAIL ~ the object} and rotated in a second direction 
is moved away from
The string engaging assembly relatches the mandrel to the drill string when { HEAD ~ the drill string } is moved away from { TAIL ~ the object } and rotated in a second direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH