THE INJURED WAS INSPECTING THE LID OF A CLACINER, THAT WAS LOCATED IN THE SHOP. THE LID HAD BEEN TURNED UPSIDE DOWN SO THAT IT COULD BE INSPECTED AND NEW REFRACTORY WORK PERFORMED. AS THE INJU RED STEPPED OFF THE LID ONTO THE FLOOR HE STEPPED ON A PIECE OF BROKEN REFRACTORY CAUSING HIM TO FALL BACKWARDS. AS HE FELL HE CAUGHT HIMSELF WITH HIS HANDS, RESULTING IN INJURY TO R PINKY.