EE WAS BAGGING 50LB BAGS ON THE OPEN MOUTH BAGGER. HE HAD NOT WORKED ON THIS BAGGER FOR ABOUT 1 YEAR. HE WORKED AT THIS BAGGER FOR ABOUT 1.5 HRS. HE FELT SOME TIREDNESS IN HIS LOWER BACK AT 3: 00 PM ON THE 18TH. TUESDAY HE FELT MORE PAIN AND WED THE 20TH PAIN & LOSS OF RANGE OF MOTION.