EE WAS HELPING REPLACE AN OLD BELT AND PUTTING ON SOME NEW IDLER'S. AFTER THEY HAD PUT THE IDLER ON THE FRAME OF THE BELT WAY EE WAS ATTEMPTING TO LINE THE IDLER IN PLACE WHEN THE END SLIPPED OFF THE FRAME CAUSING THE IDLER TO TWIST UPWAID CATCHING EE HAND BETWEEN THE IDLER AND CONVEYOR FRAME CUTTING EE RIGHT HAND PALM AREA.