The local mines research group believe this half winding wheel is not from the nearby Brandy Bottom Colliery. The ones used over the shafts at BB are recorded as 7 feet and 13 feet in diameter. The diameter of the one in this photo is 20ft. It is thought to have come from Donisthorpe Colliery in Derbyshire.
This picture is a 2D panorama of a ceiling segment in the museum, made from 3x3 pictures The missing corners are due to the way the panorama is created.