EE STATED THAT HE WAS CLIMBING UP THE HAULER STEPS TO CHECK THE OIL LEVEL AND TO START UP THE HAULER TO WARM IT UP. AS HE WAS CLIMBING THE STEPSHE MISSED THE HAND RAIL AND FELL BACKEWARDS AND ONTO THE GROUND(APPROX FALL OF 7 TO 8 FT.) CAUSING A COMPRESSION FRACTURE TO THE T12 VERTEBRAE.