EE WAS CONDUCTING A TIME STUDY OF THE ACTIVE SECTION. HE WAS STANDING IN THE CROSSCUT BETWEEN THE NUMBER THREE AND NUMBER FOUR ENTRIES WHEN A ROCK MEASURING 16""X12""X5"" FELL FROM THE MINE ROOF. THE HEIGHT IN THIS AREA MEASURED 72"". IN THE ACT OF MOVING TO DODGE THE FALLING COCK HE TWISTED HIS KNEE.