WHILE ASCENDING A LADDER TO ACCESS THE HYDRAULIC UNIT ON THE PEP SCREEN PLANT, EE GRABBED HOLD OF THE CONVEYOR SUPPORT TUBE. THE SUPPORT WAS NOT FASTENED ON THE BOTTOM AND SWUNG OUT, CAUSING EE TO LOSE HIS BALANCE AND THE LADDER SHIFTED SIDEWAYS ABOUT ONE FOOT, CAUSING EE TO LOSE HIS BALANCE FURTHER. EE FELL FIVE FEET TO THE GROUND.