THE EE WAS ON THE FACE LINE WHEN A ROCK CAME OUT OF THE PAN LINE ONTO THE BACK BOARD WHICH WAS APPROX. 4'X 5'X 6"" THICK. THE ROCK WAS TRIAGNLE SHAPED AND HE PUSHED THE ROCK OVER THE PAN LINE A ND WHEN IT TIPPED IT CAUGHT HIS HAND BETWEEN THEROCK AND THE SHIELD.