EE WAS ADVANCING THE BELTLINE ON A CONTINUOUS MINER SECTION. HE HAD TURNED ON THE WATER IN THE WATER LINE. A FIRE HYDRANT WAS OPEN & WATER WAS COMING OUT. HE WENT TO SHUT OFF THE VALVE & STEPP ED ON THE SECTION FEEDER CABLE THAT WAS IN THE BWALKWAY. HE TWISTED HIS KNEE. FEEDER CABLE IN WALKWAY CAUSED THE INJURY. NO DAMAGE OR IMPAIRMENT TO OPERATION. NO OTHER FACTORS INVOLVED.