EE WAS APPLYING SHOTCRETE UNDERGROUND. THE HOSE PLUGGED. AFTER HE TAPPED ON THE NOZZLE, THE PLUG BROKE LOOSE AND THE REMAINING SHOTCRETE AND AIR PRESSURE SHOT THE NOZZLE OFF. THE HOSE WHIPPED AROUND, CAUGHT THE EE ON THE THIGH AND KNOCKED HIM DOWN. HE WAS PLACED ON RESTRICTED DUTY FROM THE CONTUSION ON HIS THIGH.