Glamorgan Coal Co


of 6, Bute Crescent, Cardiff
1874 Owned Llwynypia Colliery in the Rhondda Valley
1892 The company was registered on 12 January. [1]
1913 A proposal was made to amalgamate the collieries in the Combine, namely the Cambrian, the Glamorgan, the Britannic, and the Naval, with D. A. Thomas in charge[2]