The Astley Deep Pit Disaster was a mining accident that occurred at the Astley Deep Pit, located in Dukinfield, Cheshire, that took place on 14 April 1874, killing 54 men and boys working within the pit. The Astley Deep Pit was a coal mine started during the first part of the 18th century to work the seam of coal known as the "Lancashire Black Mine". When finished, it was supposedly the deepest coal-mine in Britain.
[url]http://www.tameside.gov.uk/blueplaque/astleypit[/url]