AFTER INSTALLING HIS 1ST BOLT IN A XCUT HE LOWRED CANOPY DOWN. A PIECE OF ROCK FELL FROM THE CORNER & STRUCK EE ON HIS BACK. CAUSE OF INCIDENT WAS NOT PULLING DOWN LOOSE ROCK. RULES/REGS WAS A FACTOR PROTECTIVE EQUIPMENT NOT A FACTOR MINERPROFIECIENCY A FACTOR, MINING EQUIPMENT SYSTEMS NOT A FACTOR