I'm surprised no one has mentioned this today http://www.bbc.co.uk/news/uk-wales-24506122 My granddad was from Senghenydd and remembers this well - he was 8 or 9 years old at the time and he's talked about fire and the smoke coming from the mine and the panic that engulfed the village with clarity. My great-grandfather was a carpenter at the mine who was fortunately working topside that day. 439 men whose lives were valued at 5.5pence each. Unbelievable. "In May 1914 the mine manager, Edward Shaw, faced 17 charges while the colliery owners, the Lewis Merthyr Coal Company, faced 4 charges. Edward Shaw was convicted of 8 of the charges and fined £24 - leading a local newspaper to publish the headline 'Miners Lives at 5½p each'. The owners were convicted of the single charge of not fitting reversible ventilation fans and were fined £10 with £5.25 costs"