{TAIL ~ Each} of the cooling shoes includes an air expansion chamber communicating through a shoe inlet when in use with a supply of {HEAD ~ air} under pressure 
{ TAIL ~ Each } of the cooling shoes includes an air expansion chamber communicating through a shoe inlet when in use with a supply of { HEAD ~ air } under pressure
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH