A substantially white powder for {HEAD ~ use} as a filler and extender derived from by products of manufacturing vitreous low alkali, {TAIL ~ low iron glass fibers}, and a method for producing the powder 
A substantially white powder for { HEAD ~ use } as a filler and extender derived from by products of manufacturing vitreous low alkali , { TAIL ~ low iron glass fibers } , and a method for producing the powder
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH