EE WAS CLEARING A JAM IN THE FEEDER. HE WAS STRIKING THE JAMMED ROCKS WITH A SLEDGE HAMMER. WHEN THE JAM BROKE LOOSE THE HAMMER WAS STRUCK BY THE FALLING ROCKS. EE WAS TRYING TO NOT LOSE THE H AMMER AND THE HAMMER TWISTED AND JARED IN HIS HAND CAUSING A STRAIN TO HIS FOREARM. RESTRICTED DUTY.