EE WAS WORKING WITH A CO WORKER DISLODGING A PLUGGED UP CHUTE AT THE SECONDARY PLANT. WHILE MOVING THE JAMMED MATERIAL 12""X0"" HE LOST HIS BALANCE WHEN THE PLUGGED MATERIAL SHIFTED. HE WAS CAUG HT BY A CO WORKER DURING THE FALL BUT CONTACTED THE CHUTE WALL INT HE RIB CAGE AREA. HE WAS CHECKED BY A DR THE FOLLWING DAY AND HAD BRUISING ONLY. ALL EE WERE RE INSTRUCTRD AS THE FALL PROTE