During work carried out in 2009, we found the line of a tunnel just below surface level going towards where the OS map indicates the shaft was. The tunnel appears to have been deliberately blocked at some time, possibly to stop water or air getting in. Presumably it led to a ventilation furnace but evidence of this is still to be found. The engine house is very much offset from the line of the shaft. It is therefore unlikely to have been a winding engine. This supports the theory that it was a ventilation fan engine which would call for a second tunnel. We have not yet found this and the distance from the shaft seems too great. It could be that if this represents the transition from furnace ventilation to fan then they had not yet found the optimum distance for positioning the engine. The boiler house is massive. There appear to have been two egg ended boilers. We have two teams, one at each end of the boiler house working towards each other and we may soon be able to see the line of flues.
More photographs, including some of the excavation of the Engine House in 2010 can be accessed here.