21 December 1910 The Pretoria Pit disaster, a mining accident when an underground explosion occurred at the Hulton Colliery Bank Pit No. 3, known as the Pretoria Pit, in Over Hulton, Westhoughton

PRETORIA PIT DISASTER    https://www.youtube.com/results?search_query=pretoria+pit+disaster+song
Pretoria Pit disaster from Wikipedia    https://en.wikipedia.org/wiki/Pretoria_Pit_disaster
Mudcat, Req: songs about Pretoria Pit Disaster(Lancashire)    /mudcat.org/thread.cfm?threadid=120674&messages=15#top