EMPLOYEE WAS REPLACING A SCREEN IN THE REFUSE SIEVE BOX. INJURED WAS LIFTING UP ON ONE END OF THE SCREEN IN AN ATTEMPT TO GET THE SCREEN PROPERLY ALLIGNED. AS HE WAS LIFTING AND PULLING, HE FE LT A SHARP PAIN BETWEEN HIS HIP AND GROIN AREA. ON 9-28, HE FELT A KNOT IN HIS GROIN AND SAW PHYSICIAN. PHYSICIAN DIAGNOSED HIM WITH A HERNIA IN THE GROIN AND SCHEDULED A REPAIR OF HERNIA.