My avatar photo was taken down there many years ago, thrutching through the connection between Orchard and Old Wesson (that's the shaft with the big gritstone slab caps up at Bank Top). Visits in the past were through the Wirksworth Mines Research Group; I believe one of them was friends with the owner hence they were able to get permission. It's a nice engine shaft, IIRC around 280', with finely dressed gritstone ginging, and there's some quite extensive workings down there, like quite a few of the other shafts around Winster.