Boiler-house connecting passage-way. The N engine-house basement doorway is on the left
Main chamber underneath the North pit-top - looking West
Main chamber underneath North pit-top - looking East
Axial-flow fan in main chamber - believed to be part of downcast shaft heating system
Old passageway underneath the North pit-top looking West
Old passageway underneath the North pit-top looking East. The source, destination and purpose of the 24in. cast iron pipe is unknown.
Remains of old 12in. cast iron pipe at the West end of the passageway. This pipe came along the passageway for about 2yd and then went through the wall on the RH side into the main chamber. Source, destination and purpose unknown
Joint on the 24in. cast iron pipe at the East end of the passageway. This looks to be a low pressure gas-main joint and the sealing material in the spigot is probably lead.
