EE WAS CUTTING A RIGHT HAND XCUT IN #7 ENTRY AT THE TIME OF THIS INCIDENT. HE STATED THAT THE ENTRY HAD BEEN SLABBED AND BOLTED AND HE WAS IN THE PROCESS OF MAKING THE 2ND CUT. A ROCK MEASURIN G 18' X 25' X 4"" THICK FELL FROM BETWEEN THE ROOF BOLTS AND STRUCK EE ON THE CALF MUSCLE OF HIS RIGHT LEG THIS CAUSED A DEEP CONTUSION TO HIS LEG MUSCLE.