THE EE WAS CARRYING A SET OF WELDING LEADS AND STEPPED FROM ONE LEVEL OF GRATED DECKING DOWN TO THE NEXT LEVEL - APPROX. 10 INCHES DOWN. EE STEPPED ONTO A 2.5""-DIAMETER STONE AND FELT A SHARP PAIN IN HIS LEFT FOOT. X-RAYS AT THE ER SHOWED A FRACTURED BONE IN HIS LEFT FOOT. DOCTOR PRESCRIBED LIGHT DUTY.