THE INJURY OCCURRED TO A CONTRACTOR EE WHO HAD BEEN HOLDING A STEEL PIN STUB WHILE ANOTHER EE DROVE THE STUB INTO THE GROUND WITH A SLEDGE HAMMER. THE STUB HOLDER THOUGHT THE STUB WAS IN THE GROUND WELL ENOUGH. THE SLEDGE HAMMER USER DID NOT, THE HOLDER PUT HIS HAND ON TOP OF STUB AND OTHER EE WAS SWINGING HITTING THE HAND OF THE HOLDER.