EE WHO IS A ROOF BOLTER OPERATOR, ALONG WITH HIS CO-WORKER HAD MOVED THE BOLTER IN TO THE #5 ENTRY. BEFORE STARTING TO BOLT THE PLACE, A ROCK MEASURING 3'X 6'X 1-3"" FELL FROM BETWEEN THE BOLTS STRIKING EE ON HIS SHOULDER WHICH LEFT A CONTUSION ON HIS SHOULDER.