The Albion Colliery at Cilfynydd, near Pontypridd, was the scene of one of the worst mining disasters in Britain. On 23 June 1894 a massive explosion killed 281 men and boys. A further explosion on 10 November 1906 killed six men.

The colliery was opened in 1887 by the Albion Steam Coal Company. It was later owned by the Powell Duffryn Company before passing into the hands of the National Coal Board in 1947. The pit closed in 1966.

Further reading:
http://www.welshcoalmines.co.uk/Photo.htm