In {TAIL ~ the method}, ice is pressed under the water along {HEAD ~ an inclined surface} formed by a bar screen or a grating 
In { TAIL ~ the method } , ice is pressed under the water along { HEAD ~ an inclined surface } formed by a bar screen or a grating
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH