The inventive method has been found to produce a workpiece having {TAIL ~ a very low level} of {HEAD ~ metallic and particulate contaminants} on its surface 
The inventive method has been found to produce a workpiece having { TAIL ~ a very low level } of { HEAD ~ metallic and particulate contaminants } on its surface
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH