EE AND COWORKER WERE CLEANING OUT FINES CHUTE AT #2 STOKER PLANT WHEN A FROZEN LUMP OF COAL BROKE LOOSE AND HIT EE IN THE EYE. EYE WAS FLUSHED WITH EYEWASH AND EE WAS TAKEN TO THE EMERGENCY ROOM. (EE WAS BELOW COWORKER. COWORKER WAS USING PRY BAR TO CLEAR COAL. EE WAS NOT WEARING SAFETY GLASSES.)