TWO WORKERS WERE MOVING A 55 GAL BARREL OR GRREASE INTO POSITION AT THE PUMPING STATION ON DRAGLINE 101. THEY WERE MOVING THE BARREL BY ROLLING IT ON ITS EDGE. AS THEY REACHED THE FINAL POSITI ON WHERE THE BARREL IS STORED, COWORKER LET GO OF THE BARREL BEFORE INJURED WAS PREPARED TO MOVE FROM HARM'S WAY AS THE BARREL RIGHTED ITSELF AGAINST THE BULK TANK WALL. HIS RIGHT MIDDLE FING