THE EE WAS MOVING A SMALL 44"" DIAMETER STEEL PLATE WEIGHING ABOUT 60 LBS. WHEN HE PICKED UP THE PLATE HE FELT A POPPING SENSATION IN HIS BACK, BUT CONTINUED TO CARRY THE PLATE APPROX 50 FT. TH E INJURY WAS A RESULT OF IMPROPER BODY MECHANICSWHILE LIFTING. THE PLATE SHOULD HAVE BEEN CARRIED IN FRONT OF THE BODY RATHER THAN TO THE BACKSIDE.