{TAIL ~ A coolant sprayer} may be included to provide flow of a coolant onto the coring bit to cool {HEAD ~ the coring bit} during operation 
{ TAIL ~ A coolant sprayer } may be included to provide flow of a coolant onto the coring bit to cool { HEAD ~ the coring bit } during operation
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH