EE was unplugging kiln cyclone, after clearing the bottom section the ee went up to the 3rd level and started poking with a long rod as he poked the dust let loose & fell to the bottom of the cyclone, the pressure from the cyclone dust falling shot the dust out of the hole he was rodding out of, the dust shot up & grazed his left cheek and eye lids. ER Treatment / Rx Eyedrops