video images. there was some cracking red at a certain point in the shaft. how confident are you that it can hold? well, you always are optimistic. i was pleased to see that when they did a study of the shaft, when they put the camera down the first time, when they were trying to decide whether to put tunnel water inside some of the casing, that they decided to go ahead and tunnel wire is metal to shore up the sides? yes. it s just like a metal that fits the same round inside the shaft itself so it keeps the rock from being able to fall in. similar to like if you ve ever gone through a tunnel under water or new york city, some of the tunnels you go through, the tunnel water is only a smaller version that you d have in this hole going underground. i have to interrupt. we have a short window on the side. karl penhall is on the ground