EE WAS STRUCK BY A PIECE OF OVERHANGING BROW WHILE STANDING BY THE REAR OF THE BOLTER HELPING TO MAKE UP BOLTS FOR THE LEFT SIDE BOLTER OPR. CAUSE OF THIS INJURY WAS AWARENESS. COMPLIANCE WITH RULES/REGS. WAS NOT A FACTOR, PROTECTIVE EQUIP. WAS NOT A FACTOR, MINER PROFICIENCY A FACTOR, MINING EQUIP/SYSTEMS NOT A FACTOR.