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 148,106 pages of information and 233,633 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

1920 Company registered to hold the coal mining interests of David Richard Llewellyn

1930 Amalgamated with other collieries to form Welsh Associated Collieries

Part of the David R. Llewellyn Group.

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