EE WAS STRUCK BY A ROCK THAT FELL OUT BETWEEN ROOF BOLTS AND THE RIB. HE WAS STRUCK ON THE LEFT FOOT RESULTING IN SWELLING AND A CONTUSION. HE WAS IN THE FACE AREA ON #1 UNIT, RUNNING A CONT INUOUS MINER. ROCK WAS APPROXIMATELY 31"" X 31"" X 3 1/2"".