The Blantyre mining disaster, which happened on the morning of 22 October 1877, in Blantyre, Scotland, was and remains Scotland's worst mining accident. Pits No. 2 and No. 3 of William Dixon's Blantyre Colliery were the site of an explosion which killed 207 miners, the youngest being a boy of 11. It was known that firedamp was present in the pit and it is likely that this was ignited by a naked flame.