Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,980 pages of information and 229,093 images on early companies, their products and the people who designed and built them.

D. R. Llewellyn and Sons

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of Dyllas Colliery, Aberdare

Part of the David R. Llewellyn Group

1930 Amalgamated with other collieries to form Welsh Associated Collieries

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Sources of Information