EE WAS HELPING PULL THE MINER CABLE WHILE THE MINER OPERATOR BACKED THE MINER OUT OF A CUT THAT WAS READY TO FALL IN. THE EE WAS JERKING ON THE MINER CABLE TO HELP GET THE MINER OUT BEFORE THE ROOF FELL IN ON THE MINER. THIS JERKING ACTION CAUSED HIM TO STRAIN A MUSCLE IN HIS LOWER BACK.