EMPLOYEE REMOVED SIDE COVER PLATE (8"" X 10"") FROM THE FULLER KINYON PUMP & REACHED INSIDE WITH HIS LEFT HAND. PUMP WAS IN OPERATION & HOUSED A 6"" AUGER. HE WAS LOOKING FOR THE CAUSE OF THE RIY MONS GRINDING MILL TO BE OUT OF MATERIAL. EMPLOYEE LOST 4 FINGERS ON HIS LEFT HAND.