EE HAD JUST STARTED INSTALLIG A BOX OF FACE CHAIN. THREE FLIGHTS WERE TWISTED AT THE END OF THE BOX UPSIDE DOWN. HE AND A CO WORKER WERE FLIPPING THE FLIGHTS BACK OVER. HE W/LEFT HAND AND THE RIGHT HAND RESTING ON TOP OF THE CHAIN BOX AND AS THEY FLIPPED THE FLIGHTS OVER ANOTHER FLIGHT ON TOP OF THE BOX SLID OVER AND DOWN SMASHING RIGHT FINGER.