18 abr 1913 ano - 1913 620 mines across britain produced 287 million tons of coal ------------------------------------------------------------------------------------- Miners start taking caged canaries into mines to alert them to the presence of poisonous gas. ------------------------------------------------------------------------------------- Explosion at universal colliery in senghenydd near caerphilly killed 439 miners- the worst mining accident in history.

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timeline Aidan 1

ByBlwyddyn 6

13 nov 2017

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