EE ALLEGES THAT HE WAS PRYING A ROCK OUT THAT WAS WEDGED BETWEEN THE TAIL PULLEY AND CONVEYOR FRAME. THE ROCK POPPED OUT SUDDENLY AND THE EE STATES THAT HE OVEREXTENDED HIS LEFT ELBOW WHEN THE BAR WENT DOWN QUICKLY. EE ALLEGES HE FELT A PAIN IN HIS LEFT ELBOW.