Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,103 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
Coal mine, of Merthyr Tydfil
1930 Amalgamated with other collieries as Welsh Associated Collieries
1933 Owned 2 mines - Berry Level and Castle at Troedyrhiw.
1936 Welsh Associated Collieries were absorbed into the Powell Duffryn Associated Collieries.