INJURED ASSISTING IN BUILDING CRIBS IN THE BELT ENTRY. HE WAS RETRIEVING A CRIB BLOCK FROM THE SCOOP BUCKET WHEN HE FELT PAIN IN HIS LOWER BACK. HE VISITED HIS PHYSICIAN ON FEB 4, 2000 BECAUSE OF CONTINUED PAIN IN HIS LOWER BACK. HE WAS ADVISED TO REMAIN AWAY FROM WORK FOR AT LEAST ONE WEEK.