EE WAS CHANGING BATTERIES ON A COAL HAULER AT THE TIME OF THIS INCIDENT. HE HAD JUST FINISHED PLUGGING THE DEAD BATTERY UP TO CHARGE AND WAS WALKING BACK TO GET IN HIS HAULER. HE WAS WALKING B ETWEEN THE BATTERY AND THE RIB WHEN HE HEARD THETHE RIB OR SOMETHING MAKE A NOISE. HE STARTED TO MOVE AND LOOK WHEN A ROCK FELL STIRKING HIM ON THE NECKI. THE ROCK MEASURE APPROX. 4'X2'X3"" TH