INJURED WAS HELPING PULL SLACK UP IN THE MINER CABLE & WATER HOSE. A WATER HOSE COUPLING CAUGHT ON THE HANGER. THE TENSION CAUSED THE ROLLER CABLE HANGER TO BE PULLED DOWN JUST AS THE INJURED EMPLOYEE WALKED INTO THE ""V"" TO CHECK IT. THE COUPLING STRUCK THE INJURED ON HIS HARD HAT AND PUSHED IT INTO HIS SAFETY GLASSES WHICH RESULTED IN A LACERATION TO HIS RIGHT LOWER EYE LID.