You would have laughed if you could have seen me peering at the top picture, trying to integrate the colliery scene with the huge bascule bridge model, 'now how do these work together?'.
Great array of boilers busy burning all the colliery slack to supply steam for the pumps, winding engines, ventilation fans, electricity generators, and yet further essential plant. But at least one, and more likely two of the boilers, should be 'cold' at any time to allow for a selection from ash removal, wash out, inspection and maintenance.
