EMPLOYEE WAS PULLING A PULLEY TO HOIST A STEEL SIDE PLATE BACK ONTO THE POWER UNIT ON THE LEFT SCREENHOUSE. THEY USED A LOADER TO RAISE THE PLATE AS HIGH AS THEY COULD, THEN THEY ATTACHED A R OPE AROUND THE PLATE AND WERE PULLING IT UP AS INJURED HELPED TO GUIDE IT UP. HE HAD PLATE ON HIS RIGHT SHOULDER. HE WAS CLIMBING UP TH LADDER, AND FELT A PULL IN HIS LEFT GROIN AREA.