EE WAS INSTALLING 8"" PIPE LATERAL ON COARSE FEEDTANK & REMOVING OLD PIPING. HE WAS LIFTING A SHORT SPOOL BY HAND. THE SPOOL DROPPED DOWN, CATCHING HIS LEFT INDEX FINGER BETWEEN THE FLANGES OF THE OLD SPOOL CAUSING A LACERATION THAT REQUIRED4 SUTURES TO CLOSE WOUND. EMPLOYEE WAS WEARING GLOVES.