Duffryn Rhondda Colliery Co
of Port Talbot
1903 The company was registered on 12 January, to take over the property and business of the Duffryn Rhondda Co. [1]
1930 28 January: Agreement Duffryn Rhondda (1929) Ltd. and other collieries to amalgamate to from Welsh Associated Collieries[2].