EE WAS CHANGING BEARING ON MASON STACKER. AFTER CUTTING THE INNER RACE WITH TORCH,EE DID NOT SEE THAT THE BOTTOM HALF HAD FALLEN TO GROUND. WHILE GETTING UP, KNEELED ON IT, BURNING RIGHT KNEE. THEN HE JUMPED UP QUICKLY FELT PAIN IN RIGHT HIP & LOWER BACK. IT WAS NOT SERIOUS UNTIL NEXT DAY. HE DID NOT WANT TO SEE DR UNTIL 2ND WEEK OF JULY