EE BENT DOWN, GOT A HOLD OF THE BOTTOM OF THE DOOR WHILE USING PROPER LIFTING TECHNIQUE, STRAIGHTENED AND PROCEEDED TO RAISE THE DOOR THE FULL LENGTH OF HIS REACH. AS HE DID SO PAIN ACCURED IN HIS LOWER BACK, AGGRAVATING AN INCIDENT HE HAD ON 9/10/03. HE HAD BEEN INSTRUCTED PREVIOUSLY ON PROPER LIFTING TECHNIQUES AND HAD RETRAINING IN JAN. 2004. HE SAID HE HAD USED PROPER LIFTING.