EE WAS IN THE PROCESS OF LOADING A ROUND IN THE PAINT BAY HEADING. HE WAS USING THE EMULSION PUMP AND HOSE. AS HE WAS PULLING THE HOSE OUTOF A HOLE THAT WAS ABOUT 6' HIGH, A PIECE OF ROCK MEAS URING ABOUT 8"" X 4"" WITH SHARP EDGES FELL AND STRUCK HIM ON THE LOWER LEFT LEG.