Engine Houses, Power Station and Pithead Gear at Haig Colliery

The engine houses, power station, and pithead gear at Haig Colliery date back to 1917, with later additions and alterations. The main building is constructed of brick with mineral-felted roofs, and the pithead gear is made of steel. The original layout is 'H' shaped, with the central power station extended to the rear. The structure is a single tall storey, and each engine house, which forms the cross-wings, consists of six bays.

The entrance to the south engine house is accessed by a flight of steps and features wooden double doors with a semicircular fanlight, along with five tall semicircular windows to the left. The east return has three similar windows, with an oculus above. The north engine house is a mirror image of the south. The six-bay power station has six similar windows and is adorned with a decorative brick corbel table and corner pilasters. Large louvred vents are present at the roof ridges.

The machinery within is still intact, all manufactured by Bever Dorling & Co Ltd, Bradford. The north engine house contains two 21-inch bore engines installed in 1917, while the south engine house houses two 42-inch bore engines installed in 1933. The pithead gear likely dates back to 1917, although some component parts have been renewed over the years.