EE WAS TAKING A 4""WATERLINE APART. THE WATERLINE HAD PRESSURE AGAINST IT. AFTER TAKING THE BOLTS OUT, THE LINE STILL WOULD NOT COME APART SO EE APPROACHED THE LINE TO SEE WHAT WAS WRONG. AS HE TAPPED ON THE LINE IT SPRANG LOOSE & STRUCK HIM JUST ABOVE THE RT. EYE IN THE FOREHEAD AREA.