EMPLOYEE WAS STRUCK ON THE LEFT THIGH BY A 40 TO 50 LB. ROCK THAT FELL FROM ROOF. HE DEVELOPED A BRUISE ON HIS KNEE THAT WOULD NOT HEAL BUT CONTINUED WORKING. ON OR AROUND 06/24/2013 HE HAD TO HAVE MINOR SURGERY ON HIS THIGH TO DRAIN A HEMATOMA. HE WAS PUT OFF WORK TO RECOVER, THUS BECOMING A REPORTABLE INCIDENT.