EE WAS ASSIGNED TO CLEAN UP IN MAINTENANCE SHOP. HE WAS PUTTING A STEEL SHAFT, 4""X5' AND APPROX. 250 LBX, BACK INTO THE STORAGE RACK. THE SHAFT SLIPPED OUT OF HIS HAND PINCHING RIGHT MIDDLE FI NGER BETWEEN A SHAFT ALREADY INT HE RACK AND THERACK AND THE SHAFT HE WAS PUTTING IN THE RACK.