EE HAD JUST FINISHED BOLTING THE RIGHT SLAB IN #5 ENTRY AT THE TIME OF THIS INCIDENT. THEY HAD BACKED THE BOLTER UP TO THE MOUTH OF THE X-CUT. HE STATED THAT HE WAS AT THE BACK OF THE BOLTER RE-ARRANGING ROCK DUST BAGS. EE NOTICED A ROCK START TO FALL FROM BETWEEN 2 ROOF STRAPS. HE STARTED TO RUN AWAY FROM THE ROCK AND TRIPPED AND FELL FRACTURING HIS LOWER LEG.