List of collieries in Yorkshire (1984–2015)
In 1984, the Yorkshire area had a total of 56 collieries. The last deep coal mine was Kellingley Colliery which closed on Friday 18 December 2015 signalling the end of deep coal mining not only in Yorkshire but in Britain as a whole.
Source: Wikipedia — List of collieries in Yorkshire (1984–2015) (CC BY-SA 4.0)