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