The buildings were recognised as being of outstanding interest as they formed an almost complete survival of a major Victorian colliery, with later additions.
Some demolition, such as the 1950s canteen and medical centre, has occurred but the vast bulk of the structures stand.
The winding engine is by Grant, Ritchie and Company and the colliery headstocks were built by Arrols of Glasgow.
The Museum developed collections, such as a library, and exhibitions that were housed in a visitor centre which has previously formed part of the colliery offices.
[3] The museum has been described as 'a national treasure where the story of coal is kept alive for present and future generations'[4] and the entire collection is recognised as a Nationally Significant Collection[5] by Museums Galleries Scotland on behalf of the Scottish Government.