There is no evidence that this was a coal shaft. It is, in fact, a shaft that enters Charger Level - an unsuccessful trial level. It’s identification for it being a coal shaft was due to Dickenson’s interpretation of the power cable being an aerial ropeway, and it was assumed that the ropeway was constructed to carry coal from the moor to the smelt mill. This shaft was the best candidate they found for supplying the mythical coal. Both Charger Level and the power cable were both constructed long after the smelt mill fell into disuse.
The shaft collapsed into Charger Level in June 1993, taking with it a ewe, a lamb, and a collie from High Garnshaw. This resulted in Yorkshire Water, who owned the mineral rights, fencing it off.