Editing Thornhill, West Yorkshire (section)

===Industrial Revolution===
Thornhill has close ties to [[Coal mining in the United Kingdom#Industrial Revolution until 1900|coal mining]]. The demand for coal increased due to the development of the [[steam engine]]. The local population increased as more workers were recruited for the mines. In 1893 an explosion at Combs Pit killed 139 coal miners. Thornhill Colliery resulted from the merging of Inghams and Combs Collieries in 1948 but closed in 1971.