THREE EMPLOYEES WERE CHANGING A 72' SAW BLADE. THEY PLACED THE BOTTOM OF THE BLADE ON A 4X4 AS USUAL BUT USED ONE THAT WAS ONLY 1' LONG INSTEAD OF AN 8' ONE LIKE THEY WERE SUPPOSED TO. THE WE IGHT OF THE BLADE TIPPED THE 4X4 UP & THE BLADE ROLLED ONTO THE TOP OF VICTIM'S FOOT JUST ABOVE HIS STEEL TOE.