EE WAS CUTTING OFF ONE SIDE OF A WALKWAY-THE WALKWAY WAS BEING REMOVED-AT THE CRUSHER WITH A TORCH. WHEN HE CUT THROUGH ONE SIDE, THE WELD ON THE OTHER SIDE BROKE. DROPPING THE EE APPROX. 6 FT ON TO THE ROCKS AND GROUND BELOW. EE LANDED ON HIS BACKSIDE. HE FELT LIKE HE PULLED SOMETHING IN HIS NECK.