HE WAS OBSERVING THE LIFTING OF THE INLET GRATE.AS THE FORWARD PART WAS COMING UPWARD THE BACK END WAS DESCENDING AGAINST THE LOWER CENTER GRATECASTING. AT THAT TIME EE HAD HIS LEFT HAND AT TH E PINCH POINT AREA OF THE TWO CASTINGS. WHEN HE FELT PRESSURE AT THIS POINT HE ABRUPTLY PULLED HIS HAND AWAY, CAUSING LACERATION AND A FRACTURE.