3RD SHIFT VAC TRUCK OPERATOR WAS WORKING UNDER #4 KILN CLEANING SPILLAGE AROUND THE #1 PIER/SIDE POCKET GROUND AREA. AT APPROX 2:30AM, WHILE FULLY PROTECTED, WEARING DUST SUIT, GOGGLES, AMD RE SPIRATOR, LIME DUST BLEW DOWN ONTO AND THRU GOGGLES INTO HER RIGHT CAUSING A BURN REQUIRING MEDICAL TREATMENT TO HEAL.