INJURED HAD FINISHED SCALING AND BEGAN TO LOAD A DEVELOPMENT ROUND FOR BLASTING. HE WAS BENT OVER CLEANING OUT A BOTTOM HOLE WHEN A CHUNK APPROX 2' ROUND AND 1.5"" THICK FELL FROM THE HANGING AND STRUCK HIM IN THE BACK OF THE HEAD AREA. HE RECE3IVED A CUT TO THE BACK OF THE HEAD THAT REQUIRED FOUR STITCHES.