EMPLOYEE WAS HELPING ANOTHER FOREMAN MOVE MOBILE FUEL TANK WHEN THE WHEEL BECAME WEDGED ON A BOARD CAUSING HIM TO FALL BACKWARD ONTO CONCRETE ON RIGHT HIP & RIGHT ARM, KNOCKING HARD HAT OFF WITH A WHIPLASH EFFECT. WENT TO DOCTOR 7-28-05, HAD CT ON 7-29-05. DR PRESCRIBED RX FOR PAIN.