EE WAS LIFTING A VIBRATOR TO PLACE ON A RAILCAR HE WAS UNLOADING AND NOTICED BACK PAIN ON 10/08.THE FOLLOWING DAY HE WAS USING A SHOVEL DURING CLEAN-UP ON THE CLINKER COOLER AND FELT PAIN AGA IN. THAT AFTERNOON THE EE WENT TO A CHIROPRACTOR, AND REPORTED THE INCIDENT THE NEXT DAY.